Sinh vin : L1

Sinh vin : L2

LOI NOI DAU .....................................................................................................................4 AN TOAN LAO DONG TRONG NHA MAY UNG BI .................................................5 CHNG I: S LOC LICH SU VA QUA TRINH PHAT TRIEN NHA MAY ............7 1. Gioi thiu chung ...........................................................................................................7 CHNG II: QUY TRNH CNG NGH CA NH MY ........................................ 10 1. Gioi thiu chung v nha may in ............................................................................. 10 2. Quy trnh cng ngh sn xut in nng ca nh my nhit in Ung b ............... 12 Nguyn l hot ng ................................................................................................... 14 3. Cc h thng v thit b chnh trong nh my ........................................................... 14 4. H thng iu khin v gim st ca nh my. ......................................................... 15 a.Thnh phn iu khin ........................................................................................ 18 b.H thng trao i tn hiu ca cc chi tit ng .................................................. 18 c.Cc ca s b iu chnh Turbine. ...................................................................... 19 5. Cac thit bi chinh va phu ca lo hoi .......................................................................... 23 6. Chu trinh gio (air circuit) ........................................................................................... 27 7.Chu trinh nhin liu .................................................................................................. 28 CHNG III: CAC THIET BI CHINH VA PHU CA TURBINE ............................... 30 1. TURBINE .................................................................................................................. 30 2. Binh ngng ................................................................................................................ 32 3. Cac bom noc ngng ................................................................................................. 33 4. Cac thit b phun ca Turbine (Ejector) .................................................................... 35 5. Cac binh gia nhit ...................................................................................................... 36 6. Binh kh khi (Deaerator) ........................................................................................... 38 7. Cac bom cp noc (FWP) ......................................................................................... 39 8. Cac binh gia nhit ...................................................................................................... 41 CHNG IV: QUY TRNH KIEM TRA V THU NGHIM CC THIET BI KY THUAT ................................................................................................................. 43 1. Kim tra nguyn vt liu ........................................................................................... 43 2. Kim tra turbine ......................................................................................................... 43 Sinh vin : L3 3. Kim tra bom cp lo hoi ............................................................................................ 44 4. Kim tra ro r ............................................................................................................. 45 5. Kim tra h thng ng ............................................................................................... 45 6. Kim tra may nghin ................................................................................................. 46 7. Kim tra kt cu thep ................................................................................................. 46 8. Kim tra han .............................................................................................................. 47 9. Kim tra may ............................................................................................................. 48 10. Kim tra cui cung .................................................................................................. 49 Kt lun ............................................................................................................................. 52 Sinh vin : L4 Trong cng cuc xy dung va phat trin ca t noc, nganh in luc Vit Nam la mt nganh co v tri rt quan trong. Cung cp nng long va thuc y qua trinh sn xut, kinhdoanhcattccacnganhkinhtkhactrongnnkinhtqucdn.Suphattrin ca nganh in luc cung anh gia su phat trin, tin b ca toan x hi. Voi nhung c trng ring ca minh la sn xut va tiu thu phi i i voi nhau. Do o ap ung tt giuacungvacuthioihoinganhinphicosuphattrinhoply:Vuacokhnng apungnhungnhucuhintaivuaphicosuchunbchotonglai.Vivykhng nhung nganh in la ng luc cho cac nganh kinh t khac ma chinh nganh in cung phi hin ai hoa qua trinh sn xut som nht kp thoi cung cp cho t noc nhung ngun in nng co cht long cao.NhamaynhitinUngBilanhamaycocngsutlondoNgagiupxy dung, qua 40 nm snxut, nhamay cung cp cho loi in quc gia gn4 t KWh in va cung ang trong qua trinh hin ai hoa sn xut tung khu, tung khu vuc ca dy truynsnxutin.VacungtoanDng,toandnthuchinmuctiu'Dngiaunoc manh, x hi cng bng dn ch vn minh. D ap ung oc nhung nhu cu o, sau thoi gian hoc tp trau di kin thuc khoa hoc ca trong. Em tim hiu tai: Sau thoi gian 7 tun thuc tp tai nha may nhit in Ung Bi . Em oc Thy giao Vu Duy Thun cung voi su giup ca cac Thy C giao khoa Cng Ngh Tu Dng , va su giup ca cac ban ng nghip n nay bao cao thuc tp tt nghip ca em hoan thanh voi y ni dung yu cu va ung thoi han. Tuy nhin do thoi gian co han va kh nng kin thuc ca bn thn con han ch, vi vy bn bao cao tt nghip ca em khng tranh khoi nhung thiu sot. Em kinh mong oc nhn xet va ong gop y kin ca cac thy c trong khoa. Em xin chn thanh cm on su giup nhit tinh ca Thy giao Vu Duy Thun va cac Thy cac C trong khoa Cng Ngh Tu Dng Trong Dai hoc Din Luc Sinh vin : L5 1.Tat ca can b, cong nhan, hoc sinh n nha mav cong tac, thuc tap u phai chp hanh nghim chinh v an toan trong nha mav. 2.Khincongtacphaihoctapquvtrinhantoanvakimtratktquathimoi duoc vao vi tri cong tac. 3.Chi co nhng nguoi khoe mnh do v bac si co tham quvn xac nhan va sau khi sat hch quv trinh an toan t kt qua moi uoc vao nha mav. 4.Khi vao nha mav phai thuc hin av u cac trang bi bao h lao ng nhu i dep co quav hau, i dav buc dav chc chn, au i m cung, an toan, quan ao gon gang, cam i guoc, dep l vao nha mav. 5.Jaovitricongtaccamilungtungsangcacbphankhacngoaiphmviquv inh. 6.Khilamvictrncaophaituvtoichaphanhavucacbinphapantoan. thang, dav an toan. Ja tat ca u phai uoc kim tra truoc khi cong tac. 7.Chiuocpheplamvickhivitricongtaccouanhsangvabinphapan toan. 8.Khilamvictrongiukinmoitruongamuot,cacthitbidaninbngkim loi chi uoc phep dung in anh sang voi in ap 12J. 9.Khilamvicotrongcavitrichathep,kinnhucacgingsau,uongongtuan hoan, uong khoi trong cac binh b kin. thi i cong tac it nhat phai co 3 nguoi. Trong o co 1 nguoi ung gac o cu giam sat an toan nhng nguoi lam vic bn trong. Ji tri cong tac phai uoc thong gio va khong co khi c. 10. Chi cho phep lam vic o moi truong co nhit duoi 400C. 11. Khicongtacocacvitrikhongambaoantoanthiphaicophiucongtacva phai chap hanh nghim chinh an toan nhu ghi trong phiu cong tac. 12. Cam ung oi din, ung lau o noi co ap suat, nhit cao. Khi can cong tac o noi o phai thuc hin cac bin phap an toan nhu. gng tav, kinh, mt l. 13. Camhutthuoc,camdungluaonhungnoidgavchavnonhu.Khoxng,kho dau, nha iu ch hidro. Sinh vin : L6 14. Khi cac loi chat long, chat khi va chat mang in boc chav thi cam dung lua dap ma phai dung CO2 oi voi cac thit bi in, xng dau thi dung cat va bot. Khi thit bi ang quav boc chav thi cam dung cat dap lua. 15. Cam ung duoi vat nng ang treo, cam treo nhng vat nng o noi co nguoi qua li. Khi can cong tac phai co phiu cong tac, ban m phai co bin bao, rao chn. 16. Cam tu ng ong, mo van cac cau dao in, cac cong tc, cau chi, cac van hoi, van nuoc, van dau, van khi va cac cua nguoi chui trong cac buong khi. 17. Khidungthangphaichcchn.Camlamviconactrncung,camhainguoi cung lam vic trn cung mt thang. 18. Cam ngoi trn lan can, tav vi, khong co rao chn. 19. Cam sua cha trn cac b phan quav cua thit bi ang lam vic. 20. Cam tu sua cha in mt minh. Khi can phai goi tho sua cha. 21. ilamvictheocaphainguunggioquvinh,khonggiaocachonguoisav ruou, bia. 22. Cac tai liu quan trong cua nha mav khong uoc cho nguoi khong co trach nhim xem. 23. Nhat kv van hanh phai uoc gi gin can than, khong uoc tav xoa. 24. Trong vi tri cong tac cam dung mo han in o cac vi tri lav lua. 25. Tat ca moi nguoi phai hoc cach so cuu nguoi khi bi tai nn in giat av ra. 26. Khi co xav ra tai nnin giat phai cap cuu kipthoiva bao cho nguoi co trach nhim bit. 27. Tat ca moi nguoi u phai chap hanh nghim chinh tat ca nhng iu trn. Sinh vin : L7 :

NhamaynhitinUngBiocthtongPhamVnDngtnnmong utinkhikhoicngxydungvaongay19/5/1961nhmacachmangvao hin thuc cuc sng.Dy la nhamay phat in lon nht oc xydung trong k hoach 5 nm ln u tin trong cng cuc xy dung ch nghia x hi o min Bc. Nhamay nhit in Ung Bi lamt doanh nghip nha noc, truc thuc tp oan DinLucVitNam.NhamaynmgiuatrungtmthxUngBi,QuangNinh nm ngay canh con sng Ung chy m m. Trong tinh hinh t noc vua co hoa binh vua co chin tranh, song Dng va Chinh Ph quan tm c bit n tinh hinh pht trin cng nghip ca nha noc. Voi su giup v cng ngh, thit b, k thut ca nh noc va nhn dn Lin X nha maynhitinUngBidophnvinL-nin-Gratthitkvoitngcngsut 153MW goomg 8 lo hoi, 4 lo trung ap va 4 lo cao ap, 6 t tuabin may phat oc lp t theo 4 giai oan: 1 y Sinh vin : L8 : Lp t hoan chnh va a vao vn hanh 2 lo trung ap (bk3 15 39 b), 2tuabin(K1235T),2mayphat(T2122TB)12MWockhanhthanhhoavao loi in quc gia phuc vu nn kinh t quoc dn ngay 18/1/1964. : Nha may vua sm xut vua tip tuc mo rng n ngay 2/9/1965 khanh thanh lo s 3 va s 4 nng tng cng sut ca nha may ln 48MW. : Troc su oi hoi v in Quc gia ngay cang tng cao ma cac nha may in luc by gio khng th ap ung ni. Nm 1974 Dng va Chinh Ph quyt nh mo rng nhamaynhitinUngBinhmgiiquytnhucutrocmtvanhungoihoicp bach v in. Dn ngay 3/2 /1975 ct bng khanh thanh lo hoi cao ap (aK20-3 nng sut 110 tn/h) s5 va s 6, tua bin s 5 (K50-90-3 cng sut 50MW. Nm 1998 nng ln 55MW) va may phat s 5 (TB60-2T-55MW) nng tng s cng sut ca nha may ln 98MW. Tip tuc mo rng nha may n ngay 15/12/1977 khanh thanh giai oan 4 a vao vn hanh 2 lo cao ap 7 va 8 (aK20-3 nng suat 110 tn/h). Tua bin s 6 (K50-90-3), may phat s 6 (TB60-2T-55MW). Nha may nhit in Ung Bi giu vai tro quan trong trong loi in Quc Gia va c bit la trong h thng in min Dng Bc Vit Nam, voi v tri o n nm 1997 Chinh Ph quyt nh mo rng nha may nhit in Ung Bi nng tng cng sut ln 490MW, voi cngnghcaonhmhanchtianhimmitrong.Chonnaynhamaymoi xy dung va khng ngung mo rng, ci tin cng ngh tro thanh mt trong nhung nha may nhit in lon nht c noc. Sinh vin : L9

M C Ban Chunn Xuty M Rng 1 m cThutK n Trng m cTrong caPX: Nhin liuPX: Lo MayPX: DinPX: Kim NhitPX: HoaPX: Co nhitVn phongPhong t chuc lao ngPhong k hoachPhong tai chinh k toanPhong vt tPhong k thutPhong bo vPhon qun ly du an GPMB nha may mo rng 2Phong tng hop CBSXPhn xong vn hanhPhn xong Tu Dng Hoa - Diu KhinKhi sn xut kinh doanh khacnh 2: t chc n y nhi n Ung V t chc qun l :-T 1961 a n Ung B. -2005itnthnhCngtynhin Ung B hc lp trc thuc Tn lc Vit Nam. -Thng 7/2010, Cng ty chuy i m hnh sn xut v qun l thnh Cng ty TNHH MTV Nhi n Ung B trc thuc Tn lc Vit Nam Sinh vin : L10 UBMR 1-300MW 3 II: QUY TRNH CNG NGH CA NH MY 1. Gii thiu chung vmy n noc ta thi cac nha may in vn cung cp mt long in khng nho cho mang inqucgia.Divoicacnhamayinhinnaythnhinliuchinhocsdungl than v kh thin nhin. Sinh vin : L11 Nguyn l sn sut in ca nh may in l chuyn ha nhit nng tu t chy cc loainhinliutronglohoithanhconngquayTurbine,chuynconngthanhnng long in trongmayphat in.Nhit nngoc dn n Turbinequamtmi trong dn nhit la hoi noc. Hoi noc ch l mi trong truyn ti nhit nng i, nhng hoi vn phi m bo cht long( nh phi p sut) troc khi i vao Turbine sinh cng. Nhit nng cung cp cng nhiu thi nng long in pht ra cng lon va ngoc lai. Din p pht ra tu u cuc may phat in s oc a qua h thng tram bin p nng ln cp in ap thich hop troc khi hoa vao loi in quc gia. Phn loai cac nha may in Phn loai theo nguyn liu s dung: -Nha may in t nhin liu rn -Nha may in t nhin liu long -Nha may in t nhin liu kh. -Nha may in t nhin liu hn hop Phn loai theo Turbine quay my pht -Nha may in Turbine hoi -Nha may in Turbine kh -Nha may in Turbine kh- hoi Qu trnh chuyn hoa nng long ca nha may in. Sinh vin : L12 Hnh 4: qu trnh chuy a ng 2. Quy trnh cng ngh sn xu a nh my nhi n Ung b

5 1 2 3 4 13 100 14 16Khng khi Ti ng khi 17 12 11 9 6 7 8 5 15 Sinh vin : L13 (1)Kho nhin liu dung du tru v pha trn than troc khi cp ln l. (2) H thng cung cp nhin liu cho l. Thit k h thng bng ti cung cp cho l, hai h thng ny lm vic c lp k c phn cung cp in m bo lun lun cung cp than cho lo trong trong hop su c bng tihoc su c mt in. (3) H thng nghin than :oc thit k kiulo hoi t than truc tip ( khng c than bt trung gian). Mi l bao gm 4 my nghin than bng bi, than cp vo my nghinquamycpthannguynvanoocspnngboigicp1vasauodoc thi thng vo l. (4) Lohoicadytruynlalohoikiutunhontunhin,cktcuxung quanhlccginngsinhhoi,tronglothanoctchysinhnhittraoivoi noc ngng trong cacgianng sinh hoi tao rahoi bohoa tichtu trong bao hoi, sau o hoi nay oc ua qua cc phn ly dang xyclon va oc a qua cac gian qua nhit tao ra hoi qua nhit kh c nhit v p sut yu cu ca Turbine. (5) Turbineocthitkgm3cppluc.HoituloocavaoTurbine cao p, sau khi gin no sinh cng o cao p n lai oc a qua gian qua nhit trung gian nng nhit ng ap, sau o oc a vao Turbine trung ap va sang Turbine hapvbinhngng.CngsinhratrntrucTurbinequaymayphatin,mypht in s bin nng long co o thanh nng long in pht ln loi. (6) Binhngng:conhimvungnghoithoattuTurbinehaapthanhnoc ngng (7)Bom tunhoan: dung cung cp noc lmmttu sng chobinhngng, noc lam mat u ra binh ngng mt phn cung cp cho h thng x ly noc, cn lai ra knh thi ra sng. (8) Bom ngng: Bom ngng dung cung cp noc ngng cho kh kh. (9)H thng gia nhit ha ap: dung nng nhit noc ngng troc khi vo kh kh. (10)Bnhkhkh:snhnhoitrichtuTurbinetrungapgianhitnoc ngng toi trang thi gn bo hoa tach khi khng ngng. (11)Bom cp: dung cung cp noc cho bao hoi. (12)H thng gia nhit cao: dung nng nhit noc cp. (13)B hm: b hm c tc dung nhn nhit trong khi thot sau cc gin qu nhit nng nhit noc cp gn bng noc trong nhit bao hoi Sinh vin : L14 (14)Bsykhngkhkiuquay:bsykhngkhkiuquaydungsy khng kh tu cc quat gio troc khi vo l. (15) Quat gi cp 1: dung cung cp gio i sy than v vn chuyn than vo l. (16)Quat gio chinh: cung cp gi cho quat gi cp 1 v cung cp oxi cho l. (17)Quatkhoi:dunghtkhithotcalovaduytrchnkhngbung la. Nguyn l ho ng Tu kho nhin liu (than, du, a vi), qua h thng cung cp nhin liu 2 oc a v l 3. Nhin liu than tu kho nhin liu (1) qua h thng cung cp nhin liu (2), sau o oc a vao h thng nghin than (3). Tai y than oc sy boi gi nng cp 1 tu quat gi cp 1(15), qua b sy khng kh(14) v thi truc tip vo l (4). Noc ocxr l ha hoc, qua bhm13 a vaobao hoi ca l.Trong l xyra phnungchytaoranhitnng.Khoithoatraconhitcaoocquaccdnqu nhit, qua b hm v b sy khng khi tn dung nhit sau o thoat ra ngoai ng khi nho quat khi (17). Noc trong bao hoi oc cp xung cc gin ng sinh hoi xung quanh lo, trao i nhnnhitcalbinthanhhoicothngscaovaocdnnTurbine(5).Taiy hoi gin no sinh cng quay Turbine may phat. May phat in s bin cng sut co nhn trn trucTurbine thnh cngsut in phat ln loi. Hoi sau khi sinh cng c thng s thp thot v binh ngng (6). Trong binh ngng hoi noc ng thanh noc nho h thng noc lm mt tun hon ly tu sng. Trongbinhngng(6),nocngngocquaccbnhgianhitha(9)sauooc a n bnh kh kh (10) nho bom ngng (8). Noc sau khi oc kh kh s oc bom cp (11) bom qua cac binh gia nhit cao(12), qua b hm sau o a vao bao hoi. Ngoi ta dung hoi trich tu Turbine cung cp cho cc bnh gia nhit cao, gia nhit ha v bnh kh kh. 3. Cc h thng v thit b chnh trong nh my - Lo hoi va cac thit b phu - H thng in nh my. Sinh vin : L15 - H thng o long iu khin. - Turbine my pht v cc thit b phu - H thng x l v vn chuyn than. - H thng x l v vn chuyn a vi. - H thng x l v vn chuyn tro x. - H thng cp noc v x ly noc. - H thng du t. - H thng noc thi. 4. H th u khin v gim st ca nh my. Nha may oc trang b mt h thng iu khin v gim st tch hop (ICMS) thuc hin cc chuc nng :iu khin v gim st qu trnh vnh hnh ca lo hoi tua bin va cc thit b phu ,iu khin phi hop lo hoi tua bin ,bo v lo hoi tua bin may phat iu khin v gim st cc h thng phu tro thuc phn cn bng nh my Cutrccahthngiukhinvgimsttchhopbaogmcctramiu khin oc b tr phn tn dua trn co so cc b iu khin loai vi x l do hng ABB cp v cc h thng iu khin c lp vs dung b iu khin logic kh trnhH thng iu khin gim st (ICMS-intergrated control monitoring system) h thng ny bao gm + h thng iu khin gim st khi t may oc goi l (UCMS- unit control monitoring system) + h thng iu khin gim st phn chung ca nha may oc goi l (SCMS-station control monitor system) Cc h thng hoat ng c lp voi khi t may oc iu khin va giam sat c lp hon ton tu cc t iu khin c lp s dung b iu khin logic kh trnh PLC cu th nh sau h thng x ly noc v kh khong v x ly noc thi, h thng cp than, h thng x l tro x, h thng x l hidro tram kh nn, h thng thi bui l. Sinh vin : L16 Ton b vic iu khin v gim st qu trnh vn hanh nha may oc thuc hin tuphongiukhinchinhttainhaiukhintrungtm.Trongphongiukhin chinh nay oc b tr cc thit b chnh sau : + 5 tram lm vic vn hnh voi man hinh i iu khin v gim st cc h thng thit b thuc khi t my + 2 tram lm vic vn hnh voi man hinh i iu khin v gim st qu trnh vn hnhcchthngthucphnchungcanhamaydungthitbchnhkhihthng iu khin h thng +hthngtruynhnhmachkintheodingonlabungtvqutrnhvn hnh cc h thngCc bng iu khin phu :ngoi ra tai mt s nh my c b tr mt tram lm vic vn hnh voi man hinh on t tai phong iu khin tai ch vic iu khin v gim st qu trnhvnhnhcahthngcngnghnayocthuchintumnhnhMMIcacc tram vn hnh ,chi tit cu th nh sau : sttTn h thngS long tram lm vic 1Hthngxlynoc,kh khong ,x ly noc thi 4 tram (2 man hinh on ) 2H thng cp than 3 tram (3 man hinh on ) 3H thng d than ong st 2 tram (2 mn hnh on) 4Hthngkhluhunhv kh bui tinh in 2 tram (2 man hinh on) 5H thng x l tro x 2 tram (hai man hinh on) 6H thng sn xut hidro 2 tram (hai man hinh on) Sinh vin : L17 Hin nay nha may ang phat cng sut 260mw phat in ln loi ca EVN Hnh 6: Cu trc mng ICMS Bng k cc t vit t c s dng trong ti liu - Phong iu khin trung tm - Cao p Sinh vin : L18 - Bng iu khin cuc b (Palen iu khin cuc b) - Co cu iu khin - Ha p- B iu chnh p sut hoi moi ' troc no- Van iu chnh - B iu chnh cng sut- B iu chnh v tr- B iu chnh tc ( tn s quay ca rto)- Trung p- Van stp - Xilanh cao p - Xilanh ha p-- B cng-bin i in thy lucUCTE- Hip hi iu phi truyn ti in nng a.Thnh ph u khin Thnh phn iu khin dng cho nhn vin vn hnh thit lp lnh a vao b iu khin Tuabin (v/hoc vo h thng bo v Tuabin) v hin th cc tn hiu phn hi tu biukhinTuabinv.Ttcccthnhphniukhincncccbovtrnhcc hanhngngunhincanhnvinvnhnh.Khinhychutchonbiutongca thnh phn iu khin th trn mn hnh s xut hin mt ca s iu khin cuc b, m o o tac ng iu khin s oc hnh thnh-thay i im t cho b iu chnh, chuyn ch lm vic.khi o theo thng l cn phi xc nhn cac hanh ng ca nhn vin vn hnh nhm ngn chn vic v tnh thit lp sai lnh a vao b kim duyt. b.H th r i tn hiu ca cc chi ti ng Cac van iu chnh Tuabin: Sinh vin : L19 D hin th trang thi ca cac van iu chnh Tuabin, b phn x ly iu t ca h thng iu khin hnh thnh hai tn hiu v gi vo h thng tu ng iu khin: Tn hiu nh phn ('Van ang o trang thai ong) Tn hiu tong tu v v tr ca van D hoa ca van thay i mu sc theo tn hiu nh phn,cn o tn hiu tong tu nm ngay sat hoa van th hin th gi tr tu senso cm bin v tr. Cc van stop Tuabin. D hin th trang thi ca van Stop Tuabin. H thng bo v hnh thnh v gi vo ACY hai tn hiu nh phn xut pht tu cc tip im ngt cui ca v tr mo va ong. p dung ch mu cho cc tn hiu o nh sau: Nu van ong Mu ca n xanh. Nu van mo mu ca n ging nh mau ca ong ng hoi moi. Nu cc tn hiu ong va mo c gi tr bng nhau ('0 va '0 hoc '1 va '1) th van phi nhp nhay thu ht su ch ca nhn vin vn hnh . c.Cc ca s b u chnh Turbine. Ca s b iu chnh tc Turbine. Sinh vin : L20

1) 10MAY10DS301 YC21 (Speed Controller Switch ON)nt bt dung bt ch iu chnh tc (tn s quay ca rto).2) 10MAY10DS301 XC21,XR08 (Speed Controller ON/DISABLE)'en cnh bo su kin 'b iu chnh tc bt/b ngn cm. 7: Ca Sinh vin : L21 3)10MAY10DS321XR08(SpeedSetpointautoDISABLE)'encnhbosukin 'im t tu ng tn s quay b ngn cm. 4) 10MAY10DG310 YC20,21 (HPC Switch OFF/ON) nut 'a xilanh cao ap vao lam vicdungaxilanhcaoapvaolamvicbngtay.Khnngaxilanhcaoap vo lm vic hoc ngt ra phu thuc vao dong iu khin. Nu dong iu khin < 62 mA th xilanh cao p lun lun b ngt ra, nu dng > 72 mA th xilanh cao p tu ng oc avaolamvic.Trongdi62-72mAnhnvinvnhnhcthavaohocngt xilanh cao p ra bng tay.5) 10MAY10DG310 XC21 (HPC ON) 'en cnh bo su kin xilanh cao ap oc a vao lam vic.6) 10MAY10DG310 XR08 (HPC DISABLE) 'en cnh bo su kin xilanh cao p b ngn cm (vic a xilanh cao p vo lm vic bng tay b ngn cm).7) 10MAY10DS321 YC20,21 (Speed Setpoint auto Switch OFF/ON) nt 'bng tay/ tu ng dung kch hoat ch tng tc tu ng Tuabin. Ch c th oc kch hoat boi nhn vin vn hnh sau khi thuc hin cac thao tac troc khoi ng nh mo cc van stp , sy cac ong ng sau khi kich hoat ch tng tc tu ng, im t cui oc tomuc3000vong/phut,conimthinthoiochnhthnhnhobiuchnh ph hop voi biu tng tc Tuabin. Khi at oc cc tn s quay trung gian 500 (800) v1000(1200)vng/phtthoigianduytrccsvngquaynystungocthuc hin(nunooctinhntrongbiukhoing),obtkthoiimnochtu ng cung co th oc tt boi nhn vin vn hanh, khi o im t cui dung bng voi imthinthoi.nuvicttchtungxyratrongdivngquaytoihanth im t cui oc thit t o 1300 hoc 2700 vng/pht phu thuc vo gi tr hin thoi ca im t. ch tng tc tu ng tt khi at oc 3000 vng/pht. Sinh vin : L22 8)10MAY10DS321XC21(SpeedSetpointauto/man)'encnhbosukin-'im t tu ng tn s quay iu khin tu ng/bng tay. 9)10MAY10DS001YH00(SpeedSetpoint03500pm)nuttimtdung thitlpimtchobiuchnh,ociukhinboinhnvinvnhnh,nub iu chnh tn s quay khng oc bt, v du: khi b iu chnh cng sut lm vic , th nut t im t khng can thip oc. 10)10MAY10DS001XH21(SpeedSetpointtarget)imtcuitnhiuthngtin phnhitubiuchnhTuabin,chragitrcaimtocbiuchnhchp nhn voi t cach la gia tr muc tiu. Thng thong im t ny trng voi gi tr m nhn vin vn hanh a vao. Tuy nhin nu nhn vin vn hanh t im t bn trong di toi han ca tn s quay (1300-2700 vng/pht), th gi tr o b b iu chnh tu chi v ch chp nhn gi tr bng voi gi tr gioi han trn hoc gioi han doi ca di toi han. 11)10MAY10DS001XH31(SpeedSetpointactual)gitrhinthoidngnychra gi tr im t tn s quay m b iu chnh x l tai mt thoi im. 12)10MAD11FS001XC61(Turbinspeed)tnsquaydngnychratnsquay rto ca Tuabin oc o bng b iu chnh Tuabin. Ch s oc hinh thanh trn co so cc ch s ca 3 b cmbin, oclp t trong hp phia ng u Tuabin, khi o cac chsbinsbloaibo.nuxyravicli1trongsccbcmbin,thchscao nht tu hai b cm bin cn lai s oc s dung iu chnh, khi 2 b cm bin ng thoi b li th mt tn hiu tu ng hnh thnh gi vo h thng bo v dung Tuabin.13) 10MAY10DS001 XH25 (Speed setpointgradient)(Toc tng toc)tc thay i im t dng ny ch ra tc thay i im t tn s quay. Tc oc tnh ton mt cch tu ng v nhn vin vn hnh khng th thay i. Khi tng tc o ch bng tay tc t o muc ~ 300 vng/pht, khi trong di vng quay toi han l 1000 vng/pht , khi khoi ng tu ng th tc phu thuc vo trang thi nhit ca Tuabin.14) 15) 16) v 17) cc ch bo dang khoi ng Tuabin - chng ch ra kiu tng tc Tuabin s oc thuc hin sau khi bt ch tu ng. Vic tnh ton dang khoi ng oc thuc hin trn co so ch sca cc cp nhit - 'nhit kim loai bn trn xilanh cao ap va 'nhit kim loai bn trn xilanh trung ap khi chung b li th ch cho php khoi ng Sinh vin : L23 tu trang thi lanh. Cc biu khoi ng oc a ra trong hong dn vn hnh Tuabin. ChbobntriungvoikhoingTuabintutrangthilanh,bnphitutrangthi nng, o giua tu trang thi nhit trung gian.18) 10MAY10EU301 YC20,21 (Overspeed test switch OFF/ON) nt cho php th vot tc Tuabin dung tin hnh th tu ng bo v an ton Tuabin (cht vng li tm) khi at oc 3000 vng/pht ch c th oc kch hoat , sau khi kch hoat voi su tro gip ca bng t im t (xem muc 9) cn t im t tc quay cao hon gia tr im t tacngcaccchtvng,vidu3360vong/phut.Saukhitacngbov,chophp tng vot tc s tu ng b gii tru.19)10MAY20EZ001XZ01(Turbineprotectionch1)enbaocotacngcahthng bo v Tuabin knh1. 20)10MAY20EZ002XZ01(Turbineprotectionch1)enbaocotacngcahthng bo v Tuabin knh 2.21) 10MAY10EK003 XH31 (Acecleration Limiter Setpoint) im t tac ng bo v so b - dng ny hin th gi tr, m o gi tr o s xy ra vic tac ng ca knh bo v so b Tuabin. Bo v sob Tuabinl cp phuca bo vvot tc.Knh bo vso b c im t tac ng ni (lung lo), n phu thuc vo gia tc gc ca rto, gia tc cng lon th vic ngung Tuabin xy ra cng som. 22) 10MAY10EK003 XC21 (Acceleration Limitir OPERATED) ch bao tac ng bo v so b - sang o nu xy ra tac ng ca knh bo v so b. 5. i Lo hoi En-920-17,6-543 kiu AT oc cp t than anthracite ca Vit Nam voi ham long cht chay la 20770 kJ/Kg, ham long tro 27,7, m 9,4% cht bc o u ra 3,11%. Thng s v vn hanh lo hoi : 1.Cng sut nh muc u ra, t/h920 2.Cc thng s danh nh ca hoi: Sinh vin : L24 p sut, Mpa 17,6 Nhit ca hoi chinh va hoi qua nhit trung gian,0C543 Nhit ca noc cp, 0C254 Lung nhin liu rn vo l, t/h 137,6 p sut bao hoi , kgI/cm2 194,7 Nhit hoi ha p o u vo ca lo hoi, 0C 337 Nhit khng kh ra ngoi, 0C 122 Nhn t kh thua ca lung kh ra ngai1,3 Hiu sut lo hoi th 87,7 Kich thoc bung t l 21,8x12,8x58m, dung tch bung t l 11806 m3. Cao ca bao hoi la 68 m. ng sut nhit ca dung tch bung t l 60000 kcal/m3h. Bung t dang kn kh voi thit b vn chuyn tro kho phia doi . phn trn ca bung t (tu bn ngoi), cc ng gop hoi qua nhit v cc ng lin thng oc bao chebngcchpnhit.Khngkhiivaocachpnybhtquaccltrongcchp nhit do p sut m ca khng kh tao ra tu hp nhit i vao giua cc ng gi o u vo calocbui.aycabungt,vachlotrocvvchlsautaothnhmtphu nghing. Sinh vin : L25 khoang t oc bao quanh bng cc tm vch l kn kh, c su b tr ca cc ng va co 16 voi t oc b tr o vch truoc v vch sau tao thnh 2 lop o cao 18,7 m v 22,47 m. trn nh ca mi voi t bn trn o cao 25,87m c b tr cc vi x, tao thnh mt gc 045 nghing so voi ong nm ngang. C b tr cc ca nho v cc l thm. Cacvoitccuhnhxonvoihaikhoangoongkhthucp.Khoanggiua occpchunbchovictdunhinliuvoicctrucxoyvcccnhquat thng.Hnhopkhngkhioccunvoouvocavoitbngcacongxon. Ccngoclptokhoangkhitrungtm.Dlptvidunhinliu,cmung iu khin ngon la ca du nhin liu, thit b anh la va voi t. ng lp cm ung iu khin ngon la t than mn ca voi t than uoc gn trong khu vuc ming voi t than. Voi t bao gm thit b gim st ngon la t than v thit b phun mu co khi s 6 ca voi t oc cp anh la phn nhin liu chnh. Bung t co hinh lng tru voi cc canh c kiu dang khi ng hoc theo hong i ln o phn vch l sau. C mt khu vuc gm cc ng tao thnh vch l bao quanh chu vi ca bung t tu cao10,470m(Phntrncaphutro)lnncaoaycaphntinhitnng. Sinh vin : L26 Trong khu vuc ny c rt nhiu cc ng o cao t cac voi t giua muc 10,670 m v 24,670 m bung t oc lt gach chu la o xung quanh.B qu nhit buc xa cao ap oc b tr giua cao 31,720 v 42,760 m doc theo vch l sau ca bung t cung nh phn bn phi v tri ca vch l, phn m tip gip voi vch l sau ca bung t. B qu nhit buc xa oc treo trn vch l ca bung t bng cac thanh treo c bit v cc kp. B qu nhit buc xa ha ap uoc b tr giua cao 38,200 m v 60,940m doc theo vachtroccabungtcungnhphnbnphivtricavachlonoitipgipvoi vach troc ca bung t. C 16 b t o vach troc v 5 b t o vch canh ca bung t. Loai thp s dung l thp hop kim4 42x .Doc theo vach troc v bn canh c su phn b ca cc ng n cc thit b thi bui.Bqunhitmanhocbtrouracabungtvbaogm32hngthng ung voi khong cch cch nhau 642mm. Cch ng thep oc gia cng ch tao bng ng thp Dn 42x7 mm. Phnaybungtoclmsachbngcachphunnocralnncao 35,7m. H thng phun noc ra gm 8 thit b lm sachbng noc chuyn dng. Ccbmtgianhitcabungtoctocao44mophnnggiv phnphiasauoclmsachbngccthitbthibuicortchnhtrnhngn.Cc mng v cc b mt gia nhit i lu o phn ng gio oc lm sach bng cc thit b thi bui co rt c hnh trnh di voi muc co rt 10,6m. B hm noc oc lm sach bng cc thit b thi bui voi chiu su co rt 2,5 m. cc ch ngot ca ng gi doc theo cc buc vch l c b qu nhit trn.Doc theo ong khi o ch ngot ca ng gi c cc thit b oc lp nh sau: B qu nhit i lu cao ap II, kiu chuyn ng truc lu. B qu nhit i lu cao ap III, kiu chuyn ng truc lu. B qu nhit i lu ha p II, kiu chuyn ng dong ngoc. B qu nhit i lu ha p I, kiu chuyn ng dong ngoc. Sinh vin : L27 Dng kh o phia sau oc chia ra lam hai dong khac nhau va i qua u ra ca b sy khng kh kiu ng, b hm noc v tng thu nht ca b sy khng kh kiu ng. Tai u ra ca b sykhng khi cac dong khi oc kt hop vo ng khi ngang. Hai lung khi tu ong gi ngang ny s cp kh cho loc bui tinh in. Cc van la oc lp t trn cac ong gi o u ra va u vo ca loc bui. Sau o, gio oc kt hop vo trong ng gi ngang v tu y khoi socxtheo cac ongng gi vquat ID. Tai u vo ca quat ID, mi ng gio oc chia lm hai, cc van v cc np bt s oc lp t o cac ong gi ny.Cnh dn hong s oc lp truc tip vo quat ID.Cng sut ca quat ID oc iu khin bng cc khop ni thy luc o cc truc giua motor, hp s v cnh dn hong. Cc np bt sa chua va cac van oc b tr theo dy trn cac ong gi ouracaquatID.SauocaclungkhoioccpthngquahthngFGDrang khi . 6.r(air circuit) Gi lanh oc hai quat FD ht tu khng kh thng qua ng ht gi. Cc cnh dn hong oc lp truc tip o phn hut gio, cac van oc lp t o u thi ca quat. Lung gi sau quat oc kt hop lai o ng gi ngang voi hai lung song song tu mt quat khc nua. C su trch kh tu ng gio ngang thng qua cac van n cc thit b chuyn hong (4 ong),victrchgichomynghincungocchialam4ongvo4mynghin tuong ung. Tu ng gio ngang ong gi chnh s oc cp vo b sy khng kh v mi nhanh i qua mt tng ring bit ca b sy khng kh. u ra ca b sy khng kh lung gi nng s oc chia v phia lo hoi. Phn gi nho hon s oc cp qua van v thit b o n cc vi dn gi. Tai u vo ca l hoi gio s oc chia v cp vo hai ng gp. Mtphnlongiooccpvaocacvoitthngquathitbo,lungginy oc chia lam hai ong. Dong gi thu nht s c nhim vu cp kh thu cp vo hai vi t o bn doi v cc phn o trn nh ca vch troc lo hoi, ong gi thu hai cp kh cho cac voi t o phn sau ca lo hoi. Trong cung cac ng gi s c cc phn chn, hai Sinh vin : L28 ongchnchoquatgiosocpvmtchoonggionongnccmynghin.Mi quat gi s c nhim vu cp gio cho 4 voi t, mt hng ca phn troc l hoc sau l. 7.Chu trinh nhin liu Lohoibaogm4hthngnghinthan(khepkin,on)voihaibunkerchuathanmn. Thanocsyvnghinthantrongmynghinkiu370/850,mynghinthanchua khong82,9tnbithp.Haihthngnghincpthancho1bunkerthanmn,vn hnh n nh cc my cp than mn th muc than mn trong bunker t nht phi l 4 m. mi u ra ca bunker c b tr 8 my cp than. D mn ca than theo thit k l R905. Nng sut ca my cp than mn oc iu khin bng cach thay i din tch ca c vaniu khino ccmuc tu 1,8n8,5 (t/h), tongung voi vicmovan tu 20 n100.Phongtinvnchuynthanmncomccaolsdungkhngkh ngoi troi, khng kh ny oc hut qua ong ht kh ca tuabin nn kh ca lo hoi. H thngcpgivnchuynthanvohthngcpthanmncomccaogmhai tuabin nn kh kiu TB-80-1,8 mt chic vn hnh v mt chic du phng. Cng sut ca tuabinnnkhl8x103 3m /h,psutl7500kpa,tiuthuinnng150kW,tc vong quay n 3000 vong/phut.Ccnggitutuabinnenkhiockthopvomtonggiloai8 325x voi cc thit bo lu long, p sut v nhit ca gio.Khng khi oc phun tu ng gi ny vo mt h thng bao gm 6 ng gop oc b tri bn doi hai bunker than mn. Tu mt trong cc ng gop khi oc cp vo cc my cp than mn qua cac van tong ung v cc thit b o lu long nmimy cp thanmn. Tu haing gp cn lai khngkh oc cp vo b phn trn gio vn chuyn than mn co m c cao thng qua cc van v thit b o lulong ln n thit b trn tip theo o u ra ca voi t voi lung gio nong so cp. phn trn cui cng than mn co m c cao s oc trn thm voi dong khi so b sau o oc lm nng ln v thng quang cp than mn n s dn dnocnonghon,sauooccpvophnxoncavoitvoinhitlcny khong 300 C0. Dc tnh ca du nhin liu dng cho du an nh sau: Sinh vin : L29 Mt 0,95 Nhit anh la55 C0 Qpn = 9500kcal/kg Sp = 0,7-3,5 % p = 0,01 0,5% D nhot o 38C0200 cSt Tram bom du nhin liu l kiu tram bom truyn thng voi cac bom kiu truc ti thu nht v thu hai cng voi cc b gia nhit v c cc b loc du nhin liu giua chng. Du nhin liu oc cp vao lo hoi tu ng gp p sut chung ca cac bom kiu truc ti thu nht thng qua ng c ong knh Dn = 100mm, o y phi c thit b o lu long du v chng phi c cc van cng vn hnh bng tay cch ly khi tin hnh sa chua.Cc van l vn hnh bng motor, cc np bt, cc thit b o lu long du vo l hoi, cac van cach ly ong du nhin liu va cac van iu khin lu long du vao lo hoi s oc lp t doc theo ong ng du nhin liu o gn lo hoi. Dong hi du nhin liu tu cac voi t ca lo hoi s oc thuc hin qua ong ng co ong knh Dn = 50 mm, chng c lp t cc van v cc thit b o lu long du. Donghi du nhin liu s oc a truc tip vo cc bn du nhin liu va vao cac bom hut thu hai.Ngun hoioc cp n cc b gia nhit, du nhin liu s oc lytu nggp hoitudngcatmyvoiccthngshoilap14kgI/cm2vt=2500CBao cao thuc tapNhit in Uong Bi Long Quc Thnh30 I 1. TURBINE Theosocanhmy300MW,tuabinkiuK-300-170-1Psoclpt phucvuchovicchuynngmayphatinACTBB-320-3T3.Tuabinc3cylinders, kiu truc on va ngng tu voi mt b gia nhit hoi, cng sut danh nh l 303 MW v tc quay l 3000v/ph. Cc thng s chnh ca tuabin cp in nng danh nh (khng trich hoi ti tun hon). Lu long hoi chinh : 848,2 t/h Nhit hoi chinh 538 C0 p sut tuyt i 171kgf/cm2 Ccthngsouracaxilanhcaop:psuttuyti41kgf/cm2, nhit 329,7 C0 Cc thng s u vo ca xilanh cao p : p sut tuyt i 37,8 kgf/cm2, nhit 538 C0 p sut tuyt i o binh ngng 0,065kgI/cm2 Hoi chinh tu lo hoi voi cc thng s oc xac nh s oc cp vo hai khi van caop.Mikhibaogm1vanchnvahaivaniukhin.Tucckhivan,hois oc phn phi n phn trn v phn doi ca xi lanh cao p thng qua 4 ng lin thng cao p. Vic phn phi hoi o tuabin s do cc vi phun thuc hin, cc thnh phn ca vi phun oc b tr o cc hp chua vi phun nm trong phn thn bn trong ca xilanh cao p.Xilanh cao p gm hai phn, phn thn ngoi v phn thn trong. Lu long hoi o xilanh cao p l kiu dngngoc. Donghoi caxilanh cao p ctng iu khin ch ngv17tngphnhi.Tuotngiukhinv9tngpsutocbtrophn thn trong v tao thanh dong hoi bn trai ca xilanh cao p, 8 tng hoi o bn phi oc b tr o phn thn ngoi ca xilanh cao ap. Xilanh cao ap khng co trich hoi ti tun hon. Bao cao thuc tapNhit in Uong Bi Long Quc Thnh31 Hoiouracaxilanhcaoapoccpnphntinhitcalohoi.Sautai nhit, hoi oc cp vo hai khi van trung p,mi khi van gmmt van chn vmt vaniukhin.Hoioxilanhtrungapocphnphithngquavantitlu.Cacvan iu khinxilanh trung po ch vn hanh binh thong ca tuabin s ocmo hon tonvkhngthamgiavoviciuchnhmucinnng.Xilanhtrungaplakiu xilanh truc lu, ong hoi ca n c 15 tng ch ng. Xilanh trung ap cung co 3 ong trich hoi gia nhit noc ngng va noc cp lo hoi. Tai u ra ca xilanh trung ap, hoi quahainglinthngcpnphngiuacaxilanhhap.Xilanhhaapocchtao theo kiu xilanh hai dng, mi ong ng bao gm hai tng. Xilanh ha ap co hai ong trichhoigianhitnocngng,taiuracaxilanhhaaphoioccpvobnh ngng.Tt c cc rotor ca tuabin oc lm bng thp rn tu loai thp hop kim chu nhit, cc rotor cao v trung p c l khoan o giua cn rotor ha ap oc ch tao m khng c l khoan o giua.Tt c cc khop ni ca tuabin oclm theo kiu khop ni cung,na khop ni oc rn cng voi truc.Cac giong cui ca Tuabin va cac giong giua ca xilanh cao p, xilanh trung v ha ap oc lm theo kiu giong hoi labirinth. Tai xilanh cao v trung p c s dung loai giong labirinth thoi. Mi rotor ca tuabin oc trn hai , cc phn chn ca troc oc gia cng ch tao nh la cac ming chn ( c 6ming chn). Cc thn ca Tuabin oc t trn v gn c nh vo cc khung mng. Phn x ca xilanh ha ap cung oc t trn cc khung mng. Trn thn ca tt c cc Tuabin co cac im neo ring.Cc phn dn no do nhit oc thuc hin theo cach o la gia nhit phn thn ca xilanh cao ap y theo hong ca troc v cc phn ca xilanh trung v ha p. Phnthncaocneovaocacimneocarotor.Tuabinconoccp km voi hp s, nooc lp o vo hp ss4 v h thng thy luc nng rtor. Hp s nayoccpquaytrucbngtayvavnhnhhthngthylucnngrotor.Tai Bao cao thuc tapNhit in Uong Bi Long Quc Thnh32 tuabin con oc cp cac bich xilanh cao ap va trung ap. Hoi gia nhit oc cp tu ong ng ti nhit nng. 8 2. Theo so ca h thng Tuabin c mt binh ngng kiu 300K-18200 - 4. Bnh ngng la kiu hai dng lop on o phia troc v l loai ph hop voi vic vn hnh bng noc bin. Din tch b mt lm mt ca binh ngng la 17900m2va oc tao thnh boi cc ng titanium voi chiu dai la 14000m va ong knh ngoi l 19,05mm. Binh ngng la thit bchn khng, p sut thit kbn trong lopvo kh s oc duy tr dua vao dong hoi cp n binh ngng, nhit va lu long noc lam mat i qua Bao cao thuc tapNhit in Uong Bi Long Quc Thnh33 cc ng cung nh caciu kinvn hnh vcc thit b ca h thng tuabin: H thng lm sach ng binh ngng, h thng chn khng kn kh v cc thit b x kh bnh ngng.Vo binh ngng oc gia cng ch tao v hn tu cc tm thp cacbon, pha tip xc voi noc ca cc gin ng oc ph mt lop titanium. Cc ng binh ngng oc kt hop thnh cc dn ng lon bng cach han cac u ng vo cc bng titanium.Nhnhnicabinhngngochanvaocacuvixcaxilanhhapca tuabin.Dgiiquytvicdnnodonhitvobinhngngoclpttrnccgicn bng,chungocthitktucnbngtitrongcabinhngngkhikhngconoc. Noc a vao binh ngng trong qua trinh vn hnh Tuabin s oc thng qua cc phn x ca xilanh ha p v ti trong ca longnoc nay oc chuynn khungmngca xilanh ha p.Noc lm mt s i qua binh ngng bng hai ong. mi ong troc tin n s cp noc vao khoang noc c p ca binh ngng, i qua cac ng vo khoang x noc ca binh ngng va tu o s oc a vao ng x. Vic nay cung tao iu kin cho php dung v lm v sinh bt cu dn ng nao trong khi ang vn hnh Tuabin.Taiphnbntrncabinhngngcobtrccthitbnhnhoinhnhoitu ong r nhnh ha ap. Hoi nay s oc lm mt bng vic phun noc ngng vao cac thit b nhn hoi thng qua cac bom noc ngng va cac tuyn ng. Binh ngng cung la mt b phn nhn hoi va noc tao su vn hanh binh thong cho h thng Tuabin o thoi im khoi ng t my, ngung t my v vn hnh t my. 3.m Do su ngng tu ca hoi x Tuabin nn o phn bn doi ca binh ngng co su thu nocngngmasaunaynocngnglaitiptucocatrolailamnoccpchoh thng.Cacbomnocngngocsdungphucvumucichnay.hthngnoc ngng chinh co hai bom noc ngng kiu KCB-700-180 oc lp t o khoang nng ca binh ngng va a notro lai chu trinh noccp cho lqua ccbphun gim n vh thng ti tun hon ha ap. Cac bom nay co cng sut 700m3/h v ct noc l 180mw.g. Bao cao thuc tapNhit in Uong Bi Long Quc Thnh34 Thng thong th mt bom noc ngng hoat ng cn ci kia o ch du phng v khi cn thit thi bom sn sng tu ng khoi ng.Bom noc ngng kiu KCB-700-180 la bom li tm kiu ung, motor in c cng sut 450kW oc dung truyn ng bom ngng.Phnhutbomkhngcotrucvauhtrangoidovysloaitruoctrong hop b rng kh v r r noc. doi ca bom lam bng kim loai, oc bi tron vlmmtbngnocngnglytutngbomtrunggian.trnlkiutruc xuyntmvanooclptchutitrongvluctruynxungturotorcabom. Thn c lp bnh chua du va cac khoang noc lm mt . Vicakhitucclbntrongcabomkhinapnocvaobomocavao khong khng ca binh ngng. Co cac bom tai tun hon v binh ngng at oc vn hnh n nh ca bom noc nggn khi khng co ngun noc ngng chinh cho tuabin hoc khi lu long noc ngng chinh chy vo bnh kh. 9 Bao cao thuc tapNhit in Uong Bi Long Quc Thnh35 4. Turbine (Ejector) D giu oc p sut thit k (chn khng) tai binh ngng cn phi lin tuc x kh v cc cht khng ngng tu oc lot vao trong binh ngng bng cac con ong khc tu bn ngoai. D at oc muc ich nay, cn thit phi s dung cc thit b ht khi c bit tu bn ngoai. D at oc muc ich nay cn thit phi s dung nh cac thit b ht kh. Trong so h thng Tuabin c lp t 3 thit b chnh v mt thit b phun khoi ng. Nguyntchoatngcathitbphunhoiladuatrnhoatnghtcacc lung hoi ra khoi vi x voi vn tc lon. Khi phun khoi ng, s dung thit b phun hoi mt tng kiu 1 2200 1 . Cac c tnh hoat ng ca thit b phun khoi ng : p sut hoi hoat ng3,5 kgf/cm2 Nhit hoi hoat ng200C0 Lu long hoi hoat ng 2200 kg/h p sut o u x ca cc thit b phun0,102-0,115kgf/cm2 Thit k ca thit b phun mt tng rt on gin. C mt ong lon khi kh i vao, tuy nhin lung kh ny c hiu sut thp v khng th tao ra oc nhiu chn khng do o thit b phun hoi mt tng oc p dung vao giai oan u tao chn khng lc khoi ng Tuabin. Boi v cc thit b phun ca so gian Tuabin c s dung 3 thit b phun hoi kiu 2 750 3 . Cc thit b phun ny c ba tng nn v c kh qu nhit trung gian v cui cng ca hn hop hoi trich. Noc ngng chnh o u ra ca bom noc ngng i qua cac thit b lm mt thit b phun tao ra su ngng tu ca hoi vn hanh va hoi tu hn hop kh-hoi. Nhit ngng tu lai oc chuyn n noc ngng chinh tao thnh vng tun hon, muc ich ca n l tit kim noc ngng va noc ngng oc x vao binh ngng sau mi tng. Thit b o t trong kh s oc lp t o ng nhnh ca ong x chnh vo h thng chn khng kim sot khi long kh x ca cc vi phun. Cac c tnh vn hnh ca thit b phun kiu 2 750 3 : Lu long hoi vn hnh 750 kg/h Bao cao thuc tapNhit in Uong Bi Long Quc Thnh36 p sut hoi vn hnh3,5 kgf/cm2 Nhit hoi vn hnh200 C0 p sut tuyt i o u x ca vi phun1,05-1,1 kgf/cm2 5. CD phuc vu cho vic gia nhit ti tun hoan cho noc ngng chinh ca Tuabin th trong so ca h thng c ba bnh gia nhit ha p. Tt c cc bnh gia nhit ha ap u c kiu nm ngang. Cac c tnh vn hnh ca bnh gia nhit : Bnh gia nhit ha p s 1 : Kiu1 5 , 2 03 400 HB mt trao trao i nhit 400m2 p sut thit k noc ngng 25 kgI/cm2 p sut thit k hoi 3,0 kgI/cm2 Bnh gia nhit ha p s 2 : Kiu1 5 , 2 06 500 HB mt trao i nhit 500m2 p sut thit k noc ngng 25kgI/cm2 p sut thit k hoi 6,0 kgI/cm2 Bnh gia nhit ha p s 3 : Kiu1 5 , 2 06 600 HB mt trao i nhit 600m2 p sut thit k noc ngng va ap sut thit k hoi tong tu bnh gia nhit ha p s 2 Cc thnh phn co bn ca bnh gia nhit l vo bnh v h thng ng. Vo binh oc ch tao tu thp Cacbon v h thng ng oc lm bng thp khng r. Bmttraoinhitcabnhgianhittrnggingnhcacbongnooctao boi cc ng hnh chu U ong knh Dn = 16mm voi chiu dy ca thnh ng l 0,8 mm. Bao cao thuc tapNhit in Uong Bi Long Quc Thnh37 Ccngocgnvocctmthpvnghingvphavchngntrunggian.Vics dung cc ng hnh chu U tao iu kin mo rng tong i din tich trao i nhit. Bnh gia nhit ha p s 2 v s 3 co cac binh ngng hoi gia nhit tu xa kiu nm ngang.Thtchcabinhnocngngcabnhgianhits3khong13m vbnhgia nhit ha p s 2 l 5,5 3m . Hoi gia nhit cho bnh gia nhit ha ap oc trch tu hoi ca Tuabin. Hoi co ap sut tuyt i 0,26 kgf/2cm va m l 5% s oc cp vo bnh gia nhit s 1. Hoi oc cp vo bnh gia nhit s 2 c p sut 1 kgf/2cmv nhit 100 C0 va hoi oc cp vo bnh gia nhit s 3 c p sut 4,3 kgf/2cmv nhit 243 C0. 10 a Bao cao thuc tapNhit in Uong Bi Long Quc Thnh38 6. B rr Bnh kh kh kiu -1000/120 voi cng sut 1000 t/h. Tc dung chnh ca bnh khkhlkhcackhihoatantrongnoccpmboantoncholohoivaTuabin. Ngoai ra no cung co tac dung nh 1 binh gia nhit lu tru noc cp oc kh kh. Bnh kh kh bao gm -120-1 v mt thp kh kh kiu -1000-4. Phnhnhtrucabnhkhkhicoongknh3400mm,thnhbnhdy26mm. Tng chiu di ca bnh kh kh l 21000mm, dung tch hnh hocl 186 3m , dung tch chua thuc l 120 3m . Cc thng s chung ca thp kh kh : Dong knh phn hnh tru 3000mm Chiu dy thn thp26mm Dung tch hnh hoc 45,5m3 Dong kinh i lu ca thp ni voi bnh kh kh l 2400mm. Phn thn ca thp kh khi oc gia cng ch tao bng thp Cacbon. Theo so ca h thng kh kh cc dng sau s oc cp vo thp kh kh: Noc ngng chinh ca Tuabin o u ra ca bnh gia nhit ha p. Hoi gia nhit tu phn trich hoi ca Tuabin hoc tu ng gop hoi tu dng. Hoi tu thn van Tuabin. Hoi tu bnh x ong lin tuc ca lo hoi. Hn hop kh- hoi trich tu bnh gia nhit cao p s 5 v s 6. Thp kh kh s oc cp : Noc ngng hoi gia nhit ca bnh gia nhit cao p s 5 v s 6. Dong ti tun hon ca cac bom noc cp. Dong ti tun hon tu phn phun gim n vo cc b qu nhit ca l. Hoi gia nhit ca cc thit b tao bot. Noc cp oc cp tu bnh kh khi vao cac bom noc cp thng qua cc tuyn ng ringr.Nocungocdungcpnoctubnhkhkhivaouhtcacacbomx ca b gia nhit ha p s 2. Bao cao thuc tapNhit in Uong Bi Long Quc Thnh39 Tu phn trn ca thp kh kh hn hop kh hoi oc x tu bnh kh kh ra khng khi bn ngoai. So cho php cp dong hoi noc ny vo cc Ejector ca Tuabin lm tng hiu sut ca h thng. Dbovbnhkhkhkhngbtngapsutmtcchkhngmngmun,cc onghoigianhitsktnitructipthpkhkhvbnhkhkhvoinhau.mi ong s lp t 2 van an ton v chng s oc iu khin boi hai van an ton xung. p sut t x ca van ny l 10, 94kgf/cm2 boi vi hoi gia nhit bnh kh kh o ch vn hnhcaTuabinlahoilytuongtrchs3caTuabinvoipsuttuyti10,7 kgf/cm2 v nhit o muc phu ti tiu chun l 354 C0. Voi di iu khin phu ti ca t my, bnh kh khi oc vn hnh voi p sut trot. 7. C mNoc cp oc cp vao cac bom noc cp tu bnh kh khi. Theo so ca t my s co 3 bom noc cp oc truyn ng boi cac motor in xoay chiu oc lp t. Hai bom lam vic v mt bom du phong , nh vy mi bom lam vic s cp 50% phu ti t my. Bom noc cp c thit k kh phuc tap, gm nhiu thnh phn kt ni ring r. Do l : Bom cp tng apKhi hp s tng sKhop ni thy lucBom cp noc cp chnhMotor in Dc im cu th ca cac bom noc cp l hp banh rng truyn ng ca cac bom tng ap va bom cp noc cp chnh tu mt motor v vic s dung khop ni thy luc iu khin s vng quay ca bom cp noc chnh. Dc tnh vn hnh ca cc thnh phn chnh ca bom noc cp : Motor in : Bao cao thuc tapNhit in Uong Bi Long Quc Thnh40 Do la ng co khng ng b , tiu thu in nng 4856kW Tc quay1486v/ph Hiu sut 96,8% Tn tht in nng156kW Bom tng ap : Dnh muc lu long 507t/h p sut ht tuyt i11,9 kgf/cm2 (o cac iu kin thit k) p sut x 19,35 kgf/cm2 Nhit noc cp179 C0 Tc quay1486v/ph Tiu thu in nng137kW Bomtngaplamtngapsutuvocabomcpnocchinhcholohoi khng tao ra si bong bong trong noc cp. Bom tng ap la loai bom mt u vo v tng on. T l ca hp banh rng tng tc tong ong voi 4,37 (tuc l tc quay o u ra l 6500v/ph), tiu thu in nng 4392KW. Khop ni thy luc oc b tr o cng voi lop vocahpbanhrngtngtc.Banhsocp,bnhthucpvvohptaothnhkhoang vn hnh ca khop ni thy luc. Du vn hanh oc lu thng trong khoang ny. Vn tc quay o u ra oc iu khin bng cn s. Bom cp noc chnh : Lu long noc cp 485t/h p sut ht tuyt i19,3 kgf/cm2 Nhit noc cp179 C0 p sut x tuyt i 238,5 kgf/cm2 Tiu thu in nng 4128kW Vn tc quay oc iu khin thng qua khop ni thy luc. Su trot ti thiu ca khop ni thy luc la 2,4. Bom co phn trich noc tu tng trung gian phun vo b gia nhit ca lo hoi voi khi long 22t/h, p sut tuyt i 91,0 kgf/cm2. Bao cao thuc tapNhit in Uong Bi Long Quc Thnh41 8. C 11 aaHai bnh gia nhit cao p s oc lp t theo so ti tun hon cao p (bnh gia nhit cao p s 5 v s 6). Bnh gia nhit s 5 c b kh qu nhit tu xa. Bnh gia nhit caoplkiuB-2-100-24-2,0T3vbkhqunhithoikiuO-2-200-24-2,0 T3 l cc thit b kiu khoang nm ngang oc gia cng bng phong phap han. Mi thit b c mt khoang noc v cc vo b tri ngang oc ni vao khoang nay. Noc cp cp vo phn doi ca bnh gia nhit va hoi gia nhit oc cp vo phn trn ca bnh gia nhit. Cc b phn co bn ca cc bnh gia nhit l vo v h thng ng. B mt trao i nhit la cac oan ng hnh chu U oc gia cng ch tao tu cc ng co ong knh Dn = 16mm v chiu dy thnh ng l 1,4 2mm. Vt liu ch tao ng l thp khng g, thp Austenit.Bao cao thuc tapNhit in Uong Bi Long Quc Thnh42 Tt c cc b kh qu nhit ca bnh gia nhit cao p s 5 v s 6 u oc thit k cthngunghoatngvcccthitbbovkchhoatnhanh,mucichla ngung h thng v r nhanh ong noc cp trong trong hop muc noc ngng tng ln mt cch khn cp o mt trong cc bnh gia nhit cao ap. Hoi gia nhit ca bnh gia nhit cao ap oc ly tu ong hoi trich ca Tuabin.Hoivaobinhgianhitcaops6occptucacongtinhitlanhvoicc thng s nh sau : p sut tuyt i 40,8kgf/cm2 Nhit 328,20C Hoivao binh gia nhit cao p s 5 oc trch tu ong trchs 2 ca Tuabin voi cc thng s nh sau : p sut tuyt i 17,8 kgf/cm2 Nhit 426,50C Khi ngng tu va khng ngng tu ca phn hoi gia nhit trong bnh gia nhit ha p oc x tu thn vo bnh s oc thuc hin theo so cng ngh oc chp nhn. D bo v bnh gia nhit cao p s 5 khng b tng ap n muc qu cao s c cc van an ton oc lp m bo an ton. Bao cao thuc tapNhit in Uong Bi Long Quc Thnh43 V: QUY TRNH KIM TRA V TH NGHIM CC THIT KTheo cc tiu chun lp ghep chon, ta cn phi kim tra tng th cc quy trnh v tung thnh phn ring bit,kim tra co khi, in v thu luc theo cc yu cu ca EVN. 1. m r y Ccmuvtcnkimtratheomt,thanh,ongng,cacthitbucquan trong oc kim tra tai phn xong sn xut cung ai din ca EVN trong thoi gian uc v x l nhit. bao gm: Roto tuabin, cnh, thn v cc van chnh ng binh ngng va mt ng Cnh v truc bom noc ngng Cnh, truc bom tng ap va bom cp lo hoi ng v mt ng b gia nhit cao p v ha p Dong ng noc cp Ngoai cac phong phap kim tra theo yu cu, ta c th cn phi kim tra voi cc phongphapphuhopvoikhnngkimtrabngsium,kimtratiaXvkimtra khng ph hu hoc kim tra thu tinh. 2. m r r Di voi mt b phn cn kim tra k lng nh Tuabin, cn c nhiu boc kim tra cu th, t nht l cc kim tra sau y cn oc kim tra tin hnh thay cho kim tra hoi. Kim tra rung tinh trn cac canh ai din cho tuabin Kim tra n nh nhit v chay th trn roto tuabin Kim tra rung trn roto canh sau khi oc cn bng tc Kim tra qu tc ti thiu l 1 pht o tc 120% so voi tc nh muc i voi tt c cc roto tuabin. Nhung roto nh vy phi ap ung moi yu cu. Bao cao thuc tapNhit in Uong Bi Long Quc Thnh44 Cn bng ng v cn bng tinh mi roto ca tuabin, c cnh v khn c cnh. Cc thit b ng b ca cc b phn tuabin hoc kim tra ng b thng thong tuabin c su h tro ca may tinh chung minh tho mn moi b tri cokhi. Kim tra thit b trn ton b cc thit b lp t c b chuyn ng vn hnh ca van iu khin v van stop khi c su c cao p v trung p. Kim tra th nghim s oc tin hnh trn cc thit b iu khin va cac van iu khin phu. Cc thit b ngt qu tc oc lp t v kim tra. 3. m r m Di voi bom cp lo hoi, cn oc kim tra cc thng s theo tiu chun moi nht ASME P.T.C 82 quy pham kim tra cc thng s bom ly tm cho phep cac biu lin tuc oc a ln trong khong tu 0 n long x ti a va tc 100%, 80% v tc ti thiu at oc, tc nh muc. Mi cuc kim tra s oc tin hnh o cac iu kin o cc nhit u vo v p sutuvovtcmabomatngnvoiccthngs/iukintracngtt. Kimtrasoctinhnhotclulongat100%,80%,60%,40va0lu long nh muc. Kim tra ct ap tinh du ht (N.P.S.H) s oc kim tra trn bom cp lo hoi u tin chung minh rng phn xong ap ung cc yu cu ca hop ng v din gii r tao bong bng ca cnh l ti thiu v l bn cht khng gy hong hc. Cccuckimtraringbitsoctinhanhtrnbomtngapvabomcpl hoi. KimtraN.P.S.HsoctinhnhtheoquiphamkimtramoinhtASME P.T.C. 8.2 cho php biu tip tuc biu th tu 20 lu long n long x ti a o tc truc 100%. Bao cao thuc tapNhit in Uong Bi Long Quc Thnh45 Trong khi tin hnh kim tra N.P.S.H bomcp lohois chay t nht l 5 phto 30% gim ct p nhm chung minh kh nng vn hnh bc hoi co khoa. Kim tra ny s oc tin hnh o lu long x ti a. ChititcaphongthuckimtraN.P.S.Hsoctinhnhboinhthutrong giai oan thit k co s chp thun ca ai din ca ch u t. 4. m r r r Kim tra r r kh s oc tin hnh o cc mi ni gin no hoc trn cc mi hn chn giua cc ng v mt sng ng ca tt c cc b trao i nhit kiu ng vo bao gm bnh ngng nu c. 5. m r B dy vchng o nhung ch un nng phi kim tra bng siu m. Cc ghi chp nay oc giu lai v np cho EVN khi c yu cu. Nu co quy nh kim tra ngu nhin bng tia X, ch quy nh i voi mi hn cui v do EVN lua chon v quyt nh. Trong kim tra bng tia X lop han u tin oc xac nh l lop hn hon chnh u tin. Tt c ong ng khng kim tra bng 100% quang tuyn X phi oc kim tra bng thu luc voi p sut luc kim tra bng 1,5 ln p luc thit k. Kim tra ton b mi hn. Cc t l phn trm qui theo s long cc mi han va ai dindikichthoc.Ccyucutrncthpdungchottcccmihntaicng trong va phn xong. Cc ming phun, u ni cut, han i u va han inh trong ng thp hop kim s oc kim tra bng hat tu v cht thm mu. Bao cao thuc tapNhit in Uong Bi Long Quc Thnh46 Kim tra bng hat tu theo tiu chun ASTM E709-80 hoc tong ong. Khi s dung phong phap cht thmmu, pdung tiu chun ASTM E165-80hoc tong ong va oc p dung theo ch dn ca nh ch tao cht thm. 6. m r my Mt my nghin ai din s oc kim tra cc th nghim sau. a)Kim tra lot gi b)Th nghim khng ti kim tra cn bng roto, rung v nhit . Sau khi th nghim, my nghin s oc thao ra kim tra . 7. m rKimtrabngtiaXlacosochovickimsotchnhchtlongccmihn;nu khng kh thi s s dung mt phong phap oc ph duyt khc. Vic kim tra nay oc p dung voi 25% cc chi tit oc hn voi cc kt cu chnh. Nh thu phi tin hnh th nghim khi c yu cu chung minh cng sut ca cc cu v cc thit b nng theo cc tiu chun oc ph chun, cc chung nhn kim tra phi oc ghi r vt liu ch tao, th nghim hn v khng ph hu mu, cc dy cp, mc, puli xch, x monoray, bulong vng v cc hang muc lin quan khc. Sau khi hon thnh cc th nghim phi ghi r ti trong lm vic an ton ca cc thit b theo EVN yu cu. Nh thuphi cung cp y cc bo co th nghim dn nhitca sn phm trongtnht5nmsdung,hocphitinhnhccthnhimdnnhittheotiu chun ASTM hoc tiu chun tong ong.Kim tra v th nghim tai cng trong. Tt c cc thit b v my mc phi oc kim tra c lp tai cng trong theo yu cu ca EVN, m bo su ph hop cc yu cu k thut k c khi cc thit b o oc kim tra th nghim tai noi sn xut. Dc bit, cc th nghim chuc nng va ap luc trn ccchi tit lprap hoan toan va ng b cha oc th nghim tai noi sn xut, phi oc tin hnh tai cng trong. Bao cao thuc tapNhit in Uong Bi Long Quc Thnh47 Trongqutrnhlpt,phiclivaoEVNkimtratincngvicv kim tra chnh xc trong pham vi yu cu. Phi trang b cac thang gian giao, san i lai voi sn vtay vnan toan EVN hocai din ca EVN i lai kim tra. Nh thu cung phi cung cp ynhn luc, vt liu, thit bo long vcc thit b cn thit khac EVN s dung kim tra, chay th, cc ln o ac nh k cc phn vic thuc hin v cc kim tra trn. 8. m rEVNkimtracccngtchncanhthutheoquinh,trockhitinhnhhntai ch, nh thu phi lp cc ti liu sau v trnh EVN tai cng trong ph duyt. Trong tronghopnhthuthuccthuphuthuchincchangmuccngvic,thnhthu vn phi lp cc ti liu kim sot cht long co lin qua n cc hang muc o. Ngoai ra, cctiliunaysaukhiocphduytcaEVN,phigiaochoccthuphuhon thnh cc hang muc cng vic. Nh thu phi c trch nhim ao tao lai, nu cn, nhn vincathuphuv/hocmuasmthitbbxungmboyucucacctiliu kim tra cht long thng qua. Trn cc mi hn, cc phn p luc v phi p luc phi thuc hin theo cc yu cu k thutquitrnhhn(WPS).NhthusbinsoancctiliuWPSvcctiliuPQR tongung.sdungchoccmihntaicngtrongduynhtvtrnhEVNphduyt troc khi tin hnh cng vic. EVN s chp nhn mt phn hay ton b ti liu WPS v vn c quyn yu cu nh thu cung cp lai cc ti liu ca bt k phn no hay ton b ti liu WPS. Bao cao thuc tapNhit in Uong Bi Long Quc Thnh48 9. m r my Tinhnhkimtratungmyphtdiezeltaixongnhsnxuttheoungtiu chun ISO 3046/2. Tin hnh cc ln kim tra nay m bo chung minh cho giy m bocanhsnxut.DaidincoquanEVNhaykimnhocbnhimsphil ngoi kim chung. Tt c gi c v chi ph kim tra ny nh thu phi tr. May phat diezel cha oc chuyn i toi khi no chung minh oc ap ung oc cc th nghim. Tt c cc thit b phu tro nh may nen kh, b chua, thng nguyn liu, h thng thoatkhi,maybom,lammatvabiuchnhphikimtralaiapungungtiu chun v chung thuc troc khi chuyn toi cng trong lp t. - Kim tra ngoi cng trnh. Khi lp t y , nh thu phi tin hnh kim tra, iuchnhvchaythtonb.Moigic(duvnhinliudiezel)cungnhchiphi linquantoivicxctinccthnghimkimtranyNhthuuphichutrch nhim thanh ton. Vickimtraccthitbphutronhmaynenkh,bchuakh,hthngnhin liu, h thng noc lm mt, h thng sy v thot kh, c quy v b nap in, bng iu khinvhthngphnphisocthuchinringbitphchunvacaitiu khin. Tin hnhkim tra chaythmy pht diezel trong t nht 7h/ ngy trong 5 ngy lin tip oc vn hnh m khng c hong hc g. Trong thoi gian ny nh thu phi ghi lai tt c cac phep o np ly ph chun. Trong thoi gian kim tra ti trong phi dao ng tu 25 n 110% v my pht diezel phi chc chn ap ung ti. Trong thoi gian chay th phi tin hnh chay t nht 7 h ti. - Kim tra vn hanh, khi may phat diezel oc chung to ap ung qua cc cuc kimtra,thkimtrachaythoctinhnh,cckimtranysbaogm(nhng khng nht thit phi co y ) Xac nh trang thi thit b khi bt u Bao cao thuc tapNhit in Uong Bi Long Quc Thnh49 Kim tra ong in v kim tra in p tu ng Kim tra lp ilp lai 3 ln ti trong va hoa ng b Kim tra lp i lp lai 3 ln kh nng khoi ng tu xa Kim tra lp i lp lai 3 ln kh nng kim tra ti trong nh k. Dtincycathitbkhoingkhikhoinglpilplai50lnTrongthoi gianchaythNhthuphictrchnhimiuchnhvvnhnhmyphtdiezel. 10. m r Nh thu phi a vao gia u thu chi phi cho cac cng tac thanh tra va oc tin hanh troc thng bao h hong ht han theo phn A, muc 2.1. Tt c cc hang muc c pht hin li trong thoi gian kim tra s oc nh thu tin hnh sa chua theo iu khon bo hnh ca hop ng. Chi ph kim tra v sa chua bt k mt chi tit hong nao u do nh thu phi chu. Thanh tra nha may troc khi c chung ch nghim thu cui cng. Yu cu ti thiu soclitktheodinhdoiy,trongoquatrinhphathincthkodiphu thuc vo cc pht hin trong qu trnh kim tra. -Ttccctruc(chnvngngtruc)sphiockimtravchnhxcvt liubabitnhnutv,ccthitbaicblonghockhngkht.Kimtrasiumv kim tra thm thu s oc thuc hin cho muc ich kim tra ny. Cc b s oc kim tra v nut v, cc vng v mt tua s oc kim tai cac im kim tra. -Roto(trucvcnhquay).Tonbccphnquayphiockimtranutvvmi mn,coxt.Kimtrathmthuvkimtramagnafluxphiocthuchintrncc ngng truc, cc tm chn truc, cac rnh bu va cac canh ng. Cc gii chn rch rc, nu p dung s phi oc kim tra don va mi mn vt liu. Kim tra thm thu s oc kim tra cho ttc cc bulong, khop ni kim tra nut v.Tt c cacai chng cnh v dy no s oc kim tra v long v cc chuyn ng khng binh thong. Bao cao thuc tapNhit in Uong Bi Long Quc Thnh50 - Thn va cac canh tinh. Kim tra bng mt s oc tin hnh trn tt c cc thn v cnh tinh pht hin moi nut v, n mon va co xt. Nu c yu cu, vic kim tra thm thu phi oc thuc hin trn cac canh tinh va ca im toi han khc. Ccminigiuathnvccbphnmangcnh(nmngang),cckhongho( trocvsaukhibtbulong)soocbngcacmayokhehokimtravnh. Nu c yu cu, kim tra bng khoan l cung oc thuc hin cho muc ich nay. Kimtrasiumhocthmthukhngphhu,nuyucu,stinhnhtrn thn cc bulong cao p, trung p v ha ap kim tra nut v. Vic o cn thit s oc tin hanh dn daikhng binh thong. Vic o cn thit s oc tin hanh pht hin dn dai khng binh thong. - Cac im kim tra khac, cac ong ng vot, ng xp gin no va gia c th tip cn oc s oc kim tra nut v. gy hoc b phnh ra. Tt c cac u voi, ai en va ong rnh tong ung s oc kim tra pht hin mi mn hoc nh hong mai mon do hoi. - Cc van tuabin, cc thn, mt tua, phn cn v truc van bao gm cc phn tip xc khc nhpiston,loxo,cylanh,sockimtranutv,vvacactacngdcami mon, n mon va chng mi mn, nu c yu cu kim tra thm thu v kim tra v tr mttuasoctinhnh.Nucyucu,kimtrathmthuvkimtramttuas oc tin hnh. - Kim tra bnh ngng. Phn vo binh ngng, nh tm vo, ong ng , cc mi ni gin no, cc tm ngn va cac lo xo s oc kim tra bin dang, n mon, mai mon va nut v. Cc hp noc binh ngng va vo s oc kim tra ring bit va cac h hong ca lop son chng n mn. ng binh ngng, cac ng v mt sng s oc kim tra hong hc do rung, n mon, mai mon va su bt binh thong. Nu c yu cu, vic ly mu s oc tin hanh xem xt bn cht dy mong. Kim tra hunh quang s oc tin hanh khng nh khng c r r. - Bom cp lo hoi. Nu khng c pht hin thy tnh trang bt binh thong trong qu trnh vn hanh troc o, va tho mn cc qu trnh thanh tra v bom, khi cac cuc thanh tra ch tp trung vo cc truc, ngng truc v nu p dung s bao gm c kim tra cc thit b cn bng. Tt c cc truc chnv ngng truc s oc kim trav nut v va hhong. Bao cao thuc tapNhit in Uong Bi Long Quc Thnh51 Kimtrathmthuhockimtrasiumnucyucusoctinhnhtrncc truc. Thit b oc cn bng s oc kim tra cac tac ng v ti tac ng doc truc d. -Dngcodnng.Ttccctruc(trucvtrucchn)soctinhnh kim tra cc khuyt tt vt liu babit nh nut v, b long hoc hong hc hoc mn khng binh thong. Kim tra thm thu s oc thuc hin trn c truc v ngng truc pht hin nut v. Chtrutronghopphthinracchvnhanhkhngbinhthongnhnhit, cong dong in va rung cun dy qu cao, nu cc cuc thanh tra bng cch tho roi cc thit b s khng cn thit. - Khi c cc truc trc trong vn hnh xy ra v pht hin ra thit b b r r, cc van ny v cac ong ng ca n s tho doi kim tra bn trong. Cc phn cn, cht v mt tua van s phi oc kim tra nut v, tc nghn, n mon va b tri ung v tr mt tua. Bao cao thuc tapNhit in Uong Bi Long Quc Thnh52

Trongiukinnnkinhtnoctaangphattrintrongkhicacngunnng long ang dn can kit, chung ta rt cn thit phi s dung hiu qu ngun nnglong co va phi tim kim va phat trin cac ngun nng long o dang tim nng. Trong hoan cnh hin nay thi nhit in vn ong mt vai tro ht suc quan trong. Rt nhiu nha may nhit in va ang moc ln ap ung nhu cu s dung in hin nay ca nn kinh t quc dn va trong o co rt nhiu vn cn phi oc quan tm mt cach hop ly.Vi vy co th ap ung oc nhu cu ca x hi sau khi ra trong chung em c gng trang b cho minh nhung kin thuc thuc t, chuyn su co th ung pho oc voinhungththachmangtinhthoiai.VaotithuctoUngBilnnaycho chung em rt nhiu nhung goi mo v nhung iu chung em con bn khon. Mtlnnuaemxingiloicmonchnthanhtoithygiaohongdn,canb cngnhnvinnhamayNhitinUngBigiuprtnhiuemcothhoan thanh bn bao cao nay tt nht. Chung em xin chan thanh cam on ' 06102011 Sinh vin Luong Quoc Thinh