Table of ContentsGII THIU PHN MM123456PHN VIICHUYN GII THIU PHN
MM TNH TON THY LC BENTLEYWATERCAD
Water CAD la mot cong cu vo cung hu hieu e thiet lap mang li
phan phoi nc. Viec thiet lap mo hnh di dang bieu o hoac theo cac
ban ve co ty le tr nen vo cung de dang va no cho phep phan mem
Water CAD t cham soc cac nut lien ket. oi vi viec thiet lap mang li
phan phoi nc trong phn mm nay, ban khong can phai gan nhan nhan
dang (label) cho cac ng ong va cac nut (node) v Water CAD se t ong
gan nhan nhan dang. Khi thiet lap mo hnh di dang bieu o, chung ta
phai t nhap cac so lieu ve chieu dai ng ong. Trai lai, khi thiet
lap mo hnh theo cac ban ve co ty le th cac so lieu ve chieu dai ng
ong se c tnh t ong t cac v tr ong gap khuc ti cac nut bat au va ket
thuc tren mo hnh.
I . GII THIU PHN MM Water Cad l chng trnh kt hp gia Cybernet v
AutoCad, l chng trnh tnh ton thy lc mng li cp nc ging nh Epanet, c
iu dung lng Cybernet n hn 76MB cn Epanet ch c 2MB. Tuy nhin
Watercad l mt phn mm rt mnh v trc quan v cng vic tnh ton thy lc mng
li nc cp khng nhng gip ngi k s tit kim khng t thi gian m vi nhng
tnh nng c th ca Watercad cn gip ngi thit k to nhiu kch bn nhm phn
tch, so snh chn ra phng n ti u nht cho h thng mnh thit k s dng
Benley WaterCad V8XM trc tin ta phi ti b ci Benley WaterCad V8XM v
bn Fix v my ca bn v ci t trn my tnh, sau khi ci t v chy Fix tin hnh
chy chng trnh.I. TO MT TP TIN (FILE) D N MI u tin bn cn mt file bn
nn nh dng DXF, BMP hoc JPE y ta dng Cad to mt bn nn DXF bi s rt
thun tin sau ny cho vic fix kch thc chiudi ng v in n bn v trc
tip.
u tin Ta load file bn v Dwg vo AutoCad.
Sau vo File>Save As chn nh dng file l DXF.
Sau khi c file bn nn, ta khi ng WaterCad v bt u mt d n mi.
WaterCAD c hai giao din s dng l Stand-Alone v giao dien AutoCAD. 1.
i vi giao din Stand-Alone Click p vo biu tng WaterCAD trn mn hnh vo
WaterCAD StandAlone.
Chn Create New Project
Giao din lm vic ca chng trnh
Vng lm vic ca Water Cad c chia lm 4 vng.- Vng 1 : Khu vc iu
khin. Gm c cc nt chc nng (m, lu file, chy, qunl (rt nhiu)- Vng 2:
Vng Bn v. Tng t nh ca Epanet, ti y l khu vc bn v ca dn.- Vng 3: Vng
qun l thnh phn ca mng li bao gm nt, van, kha, ng,bm(rt nhiu)- Vng
4: Vng t cc kt qu tnh ton, tnh cht ca tng i tng trong bn v sc qun l
ti y. Ta hon ton c th ty chnh giao din theo hng tin dng cho bn nht.
Ngoi ra, vng lm vic ca WaterCad bn mi ny cn c im hay na l n c th m
nhiu bn v cng lc trn mt vng theo kiu Tab ca IE7 hoc FireFox, rt d
qun l khi bn phi m nhiu bn v cng lc.
Ci t mc nh cho d n, chn Tool/ Option / Unit
Chn h n v mc nh l SI. Tm dng Pressure (p lc t do) v chn n v lm
H2O.Sau Click vo Reset Defalt. Chn th Drawing, chnh Scale Factor 1
cm = X (m) (ty t l bn v bn chn )
Chn File > Project Properties ci t thuc tnh cho d n. Tip tc
chn File > Save As lu d n ca bn. Nh vy l kt thc giai on chun b u
tin. Vic ci t lc u tuy c hi tnthi gian cht nhng s an ton hn cho d
liu ca bn sau ny.
2. i vi giao din AutoCAD: Nhp p chut vo biu tng WaterCAD trn mn
hnh voWaterCAD for AutoCAD.
Chn WaterCAD > Tools > Options
.
V ta lm vic trong SI units, hy chn Unit System, sau d chn
SystemInternational, chn OK. Chn File > Open. Chn file AutoCAD
Du an 1.DWG lu trong my t th mc Ban ve\Du an. Khi bn v m ra, chn
File > Save as. Trong hp thoi Save Drawing As,Nhp p chut vo th
mc Ban ve, nhp tn th mc vi tiu Du an1.DWG v chn Save lu gi tp tin
trong th mc\Bentley WaterCAD\Ban ve\Du an 1 ca bn. Chn WaterCAD
> Project > Project Properties ci t thuc tnh cho dn. t tn cho
d n l Du an 1 trong Title,chn OK th Drawing, chnh Scale Factor 1 cm
= X (m) (ty t l bn v bn chn ), Chn OKII. THC HIN D N1. Load bn nn.-
Chn View > BackGround Layer.
Nhp chut phi vo Background Layer chn New > File. Chn ti file
DXF bn va lu va ri v load file. Sau khi load file xong chn nt zoom
ton b mn hnh thy c bn ca bn.
2. B tr mng li V cc thnh phn ca h thng bng cc nt cng c ca chng
trnh, tng tnh Epanet, bao gm N t, ng, B cha, Bm, van kha L mt chng
trnhtnh mng li cp nc rt mnh nn WaterCad c rt nhiu cng c cho ta
ngdng v m phng st vi h thng thc t. y ta c:
Nt chn chut Mouse ng ng - Pipe Nt Junction i nc - Tank Ngun nc -
Resource Bm - Pump Van bm Check Valve Van x kh Trong qu trnh v mng
li ta s phi thc hin mt s iu chnh cho bn v ca ta d nhn v d hnh dung
hn (kch thc nt, ng, ch nm Tool > Option >Drawing. Cc mc ny hi
rm r cht v ban u s kh iu chnh hn so viEpanet, nhng khi s dng quen,
bn s thy n hay hn Epanet rt nhiu.Sau khi v xong mng li ta mi nhp cc
thng s cho cc thnh phn.Tch vo hpkim Back ground layer khng hin
layer ln. Ta c hnh sau:
3. Tin hnh nhp cc thng s:3.1. Nhp thng s nt:C nhiu phng php nhp
s liu cho tng nt. C 2 cchchnh:- Cch 1: Nhp p vo nt cn t thuc tnh.-
Cch 2: Xut ra bng s liu v nhp vo bng . Cchny s dng khi bn tho
(Bngnhp s liu nt)
y ti xin gii thiu cch nhp liu 1. (tng tEpanet) . Nhp p vo tng nt
lm xut hin ca s Properties.Cc thng s bao gm:- Label: Nhn- Note: Ghi
ch- Hyperlink: Lin kt- X, Y: Ta - Active: Hot ng ( true)- Demand:
Nhu cu ti nt.- Unit Demand: Nhu cu n v
C 2 cch nhp nhu cu ca nt l Demand. Chn Demand ta c hp thoi:
Demand (Base) l lu lng gi Max ti nt nu ch chy kim tra gi max,
khi Pattern ch Fixed. N u chy theo Pattern th bn phi to 1 pattern
trc bng cch vo Component > Patterns , sau nhp s liu ca biu dng
nc ca a phng (nhu cu theo Gi, N gy hoc Thng).
Ngoi ra cn mt thng s c bn na cn nhp l Elevation : Cao trnh
nt.
Ln lt nhp ht s licho cc nt sau tinhnh nhp s liu cho ccon ng.Vi
chc nng t ng ochiu di ng, khi bn vnn bn c t l chnh xc(v d c th t l
1:1000 1 n v Cad tng ngvi WaterCad s l 1m)Trong Property bn cn nhp
vo s liu ng knh ng (Diameter), vt liu (Material) trong th vin ng ca
chng trnh. H s Hazen-William tng ng c gn vi tng loi vt liu. Hm th
vin vt liu ca chng trnh kh phong ph vi nhiu loi nh ng gang, km,b
tng, nha PVC
i vi ngun nc th s liu cn nhp l cao trnh mc nc. - i nc: Bn cn nhp
vo cc thng s Elevation: Cao trnh (E) Elevation Base: Cao trnh y i
(EB) Elevation Minimum: Mc nc thp nht (Emi) Elevation Initial: Mc
nc hin c (EI) Elevation Maximum: Mc nc max. (EMa) Nh vy ta c E
Compute hoc n F9 hay nt trn thanh cng c.3. iu chnh:Ta c th ty bin
iu chnh bng mu hin th cho tng nhm gi tr (nh epanet) hockch thc cc
cng trnh, gi tr tnh ton c bng cch vo View > ElementSymbology chn
cc gi tr cho Junction hoc Pipe hoc cc thnh phn khc.4. Xut d liu:-
Bng s liu: Chn View > Flex Table hoc Ctrl + 7. Chn thnh phn Nt,
ng,bm, b cha - Bng s liu c th xut ra file Excel hoc in n trc tip.
Ta c th ty bin i tnnhn ca ct s liu thnh ting Vit (Unicode) .
(bng tnh thy lc tuyn ng)
1. Chy chng trnh m phng tc thi.
Bm nt chy chng trnh. Nhy p hoc bm chut phi m Properties manager
v kim traChc chn phn tch m hnh tc thi Steady State.
Bm vo ntValidate , v bm OK khi khng c thng bo li Bm vo Compute
chy chng trnh Sau khi chng trnh chy xong, s dng nt Notifications
xem thngbo.
Bm vo nt Save lu file. 2. Chy chng trnh m t theo thi gian thc M
ca s Properties xem thng tin ca nt (nhy p vo nt 1 )v chn nt Demand
Collection m hp thooii Demands. Theo mc nh, ch dng nc - demand
pattern c ci t l Fixed C nnh. Nhap 23 l/min vo nhu cu. Nhy vo nt
Pattern (Demand) m ca s Patterns
Bm vo nt New to pattern cho m hnh ny. a. iu chnh li ch do thy lc
ca khu dn c ( Hydraulic patternResidential ) bng vic bm chut phi
trn thanh Rename b. Nhp 0.5 vo Starting Multiplier. c. Trong
Pattern Format chn Stepwise. d. Trong Hourly, nhp s liu times v
multipliers:
Time from Start Multiplier
30.4
61
91.3
121.2
151.2
181.6
210.8
240.5
Trong Residential Patterns th hin sau khi nhp s liu nh sau:
Bm vo nt New to pattern cho m hnh tnh cho khu thng mi. a. iu
chnh li ch thy lc ca khu dn c ( Hydraulic patternComercial ) bng
vic bm chut phi trn thanh Rename b. Nhp 0.4 vo Starting Multiplier.
c. Trong Pattern Format chn Stepwise. d. Trong Hourly, nhp s liu
times v multipliers:Time from Start Multiplier
36
68
901.6
121.6
151.2
188
216
244
ng cc hp thoi ca nt J-1 Tng t lm vi cc nt cn li Bm vo nt
Calculation Options Nhy p vo nt Base Calculation Options m
properties managerv chn EPS t menu Time Analysis Type. Bm vo nt
Validate, v bm OK khi khng c thng bo li. Bm vo Compute chy chng
trnh. Sau khi chng trnh chy xong, s dng nt Notifications xem
thngbo. Bm vo nt Save lu file. Kt lun: Nh vy c bn ta nm c cch thc s
dng tnh ton thy lc bng Water Cad. Trong lnh vc cp nc cho th vic tnh
ton phn tch thy lc l vic lm ht sc cn thit. L mt phn mm rt mnh Water
Cad khng ch dng l nhng tnh nng trn Vic vch tuyn cp nc v chy m hnh
trn phn mm Watercad s gip tit kim khng t thi gian ngoi nhng tnh nng
c th ca Watercad gip ngi thit k to nhiu kch bn nhm phn tch, so snh
chn ra phng n ti u nht cho h thng mnh thit k, vi nhng u im nh giao
din trc quan d hiu lm vic trn nn cad, nhp, xut s liu n gin d s dng
Water cad chc chn l mt phn mm rt hu ch v quen thuc vi dn ngnh nc
chng ta.2
