Technical Diary Turbine

of 29

4600 MW SEL IPP

Jharsuguda

Technical Diary

Turbine

of 29

TABLE OF CONTENTS

SECTIONS

1.0 TURBINE AND AUXILIARIES ..................................................... 3

1.1 TECHNICAL SPECIFICATION-MAIN TURBINE ............................. 4

1.2 DEFINITION OF START MODE OF STEAM TURBINE .................... 7

1.3 TECHNICAL PARAMETER OF HP BYPASS SYSTEM ...................... 8

1.4 TECHNICAL PARAMETER OF LP BYPASS SYSTEM ....................... 9

1.5 CRITICAL ROTATING SPEED ..................................................... 9

1.6 LUBRICATED OIL SYSTEM ...................................................... 10

1.7 TURNING GEAR MOTOR ........................................................ 14

1.8 EH OIL SYSTEM ..................................................................... 14

1.9 SPECIFICATION OF TDBFP ..................................................... 15

1.10 OIL PUMP PERFORMANCE SPECIFICATION .............................. 15

1.11 MOTOR OPERATED FEED WATER PUMP .................................. 15

1.12 HP HEATERS.......................................................................... 17

1.13 LP HEATERS .......................................................................... 18

1.14 DE-AERATORS ...................................................................... 18

1.15 SHAFT SEALING SYSTEM ........................................................ 19

1.16 CONDENSER ......................................................................... 20

1.17 WATER RING TYPE VACCUM PUMP ......................................... 21

1.18 CIRCULATING WATER SYSTEM ............................................... 21

1.19 COOLING WATER TOWER ...................................................... 22

1.20 INTEGRATED PUMP HOUSE SYSTEM ....................................... 22

1.21 MAIN PARAMETER LIMITS ...................................................... 23

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1.0 TURBINE AND AUXILIARIES

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TURBINE AND AUXILIARIES

1.1 TECHNICAL SPECIFICATION-MAIN TURBINE

The turbine type is: sub-critical, primary reheating .single shaft .three

cylinder and four-flow, and condensing type and its design rated power is

600MW, which characteristics include: Combination of the HP & MP cylinder,

double-flow reverse arrangement of the LP cylinder. There is internal flange

bolt heating system in the proper, whose direction is anti-clockwise from

the head to motor. Eight steam extractions are designed, which supply 3 HP

heaters, 1 de-aerator and 4 LP heaters. Two HP automatic main stop valve

and four HP governing valve are arranged below the operation layer of

head's front and two MP combined steam valve which are arranged

symmetrically.

In turbine generator shaft unit, in addition that #1, 2 bearings adopt the

tilting-pad ones, others adopt elliptic bearings. Shaft vibration measuring

equipment are installed in the X, Y direction of every bearing upper tile,

lower tile is equipped with temperature measuring equipment. Thrust bear

lies in the #2 bearing seat between the HP & MP cylinder and LP cylinder and

adopt tilted plane dual-thrust disc structure.

HP & LP cylinder's expansion dead point lies in #2 bearing pedestal while LP

cylinder A and B in neighborhood of their own center. The horizontal key in

the dead point limit the axial displacement of the steam cylinder. At the

same time, there are portrait keys set in back and forth of the portrait

centerline between the front bearing tank and two LP cylinders to lead steam

cylinder to expand along the shaft and limit its horizontal deviation.

Two steam-driven variable speed feed-water pumps of 50% of capacity and

one electric stable speed feed-water pump of 50% of capacity are designed

in the unit feed water system. Two steam source including MP and LP are

designed in small turbine and it can impulse with auxiliary steam.

Condenser is designed to double-shell, double back pressure and single

pass, which can operate under the working conditions including unit max

output, circulating cooling water temperature 38C and back pressure less

than 18.6 kPa.

The design start mode of the unit is MP cylinder mode. Also HP cylinder can

be adopted, as the bypass system is not put into operation. We should pay

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attention to the swing condition of HP exhaust check valves when it impulse.

Bypass system adopts two-stage series connection bypass system and it has

MP & HP combined start, MP cylinder start and protection functions.

Sl No Name Related parameters

1 Unit model N60016.7/538/5383

2 Unit type Sub-critical, primary reheating, single shaft, three

cylinders, four-flow condensing steam turbine

3 Unit nameplate power

/maximum continue

output

600MW

4 Rated rotating speed 3000 r/min

5 Rotating direction Anticlockwise

6 Design cooling water

temperature of the

condenser

35.6 C

7 Through-flow stages Total 42 stages

HP cylinder: 1 governing stage + 8 pressures stages

MP cylinder: 5 pressure stages

LP cylinder: 2x2x7pressure stages (2 LP cylinder)

8 Steam matching way Composite governing (nozzle governing +

expenditure governing)

9 Rated initial steam

pressure

16.67 MPa

10 Rated initial steam

temperature

538 C

11 Rated exhaust pressure

of HP cylinder

3.82 MPa

12 Rated reheat steam

inlet pressure

3.439 MPa

13 Rated reheat steam

inlet temperature

538C

14 Rated steam inlet flow

of the initial steam

1863.75 t/h

15 Max steam inlet flow of

the initial steam

2028.0 t/h

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16 Rated steam inlet flow

of the reheat steam

1585.974 t/h

17 Rated exhaust pressure 10.2 KPa (9.1KPa /11.4KPa)

18 Height of the end blade 851 mm

19 Design cooling water

temperature

35.6 C

20 Regenerative stages of

feed-water

3 stages HP heater+1deaerator+ 4stages LP heater

21 Rated feed-water

temperature

276.6 C < under max condition 282.2 C)

22 Steam turbine

performance guarantee

Guarantee power: (TMCR) 600MW

VWO condition inlet steam flow 2028t/h

23 Load limit condition

when HP heater stop

running

shutdown 600 MW; 1,2,3 shutdown 600MW;

24 Load limit condition

(reference value) when

LP heater stop running

5&6 shutdown540 MW; 6&7 shutdown 540MW ; 7&8

shutdown 540MW; 5,6 & 8shutdown 480MW; 6,7 & 8

shutdown 480MW; 5,6,7 & 8 shutdown 420MW

25 Condition of auxiliary

steam

600MW

26 Height of the operation

layer

13.7m

27 Max lifting height 8.846m

8.926m

28 Bypass system capacity 60% BMCR

29 Start-up and operating

mode

Stable-sliding-stable operating mode

30 Range of variable

pressure operating

40% - 90%

31 Change rate of the

variable and stable

pressure

class load changes 10% rated output/min

equal load changes below 50%3% rated output/min

over 50%5% rated output/min

below 30% 2%/min

Permitted change range of load between 60% and

100% is 20%/min

32 Normal value of the

shaft vibration

0.076mm

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33 Permitted value of the

critical rotating speed

of shaft vibration

0.15mm

34 Bearing vibration max

value when at critical

speed

0.08mm

35 Max permitted back-

pressure value

18.6 kPa (a)

36 The release blasting

pressure of the LP

cylinder exhaust

diaphragm valve

34.3 kPa(g)

37 Max permitted exhaust

temperature of the LP

cylinder

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load step 10% THA 12000

times

0.001

1.3 TECHNICAL PARAMETER OF HP BYPASS SYSTEM

Technical parameter

name

unit design

conditio

n

Cold

start

Warm

start

hot start Very

hot

start

HP

steam

bypass

valve

inlet steam

pressure

MPa(a) 17.5 6.3 8.8 9 13

inlet steam

temperature

C 541 390 420 445 380

inlet steam

flow

t/h 1236 290 290 330 380

outlet steam

pressure

MPa(a) 4.655 1.2 1.2 1.2 1.2

outlet steam

temperature

C 336.4 290 300 310 320 *

outlet steam

flow

t/h 1434.07 303.89 305.9 352.53 416.57

Inlet/outlet

pipe design

pressure

MPa(g) 17.5/4.655

inlet/outlet

pipe design

temperature

C 541/336.4

HP

water

spray

control

valve

calculation

pressure

MPa(a) 24 23.98 23.98 23.96 23.98 20.12

calculation

temperature

C 190 111.00 111.00 111.00 111.00 161.30

calculation

flow

t/h 198.07 13.89 15.09 22.53 36.07 206.43

design

pressure of

temperature

releasing water

pipe

MPa(g) 24

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design

temperature of

temperature

releasing water

pipe

C 190

1.4 TECHNICAL PARAMETER OF LP BYPASS SYSTEM

Technical parameters name unit Design

conditio

n

Cold

start

Warm

start

Hot

start

Very

hot

start

LP

steam

bypass

valve

inlet steam pressure MPa (a) 4.189 1.10 1.10 1.10 1.10

inlet steam temperature C 541 345 400 420 485

inlet steam flow t/h 2 x

717.04

2 X

151.95

2 x

152.55

2 x

176.27

2 X

208.04

outlet steam pressure MPa (a) 0.6 0.6 0.6 0.6 0.6

outlet steam temperature C 160 160 160 160 160

outlet steam flow t/h 2 x

938.06

2 x

174.98

2 x

182.69

2 x

214.05

2 X

264.05

inlet/outlet pipe design

pressure

MPa(g) 4.189/1.6

Inlet/outlet pipe design

temperature

C 541/160

LP

water

spray

control

valve

Calculated pressure MPa(a) 3.1 3.1 3.1 3.09 3.09

Calculated temperature C 49.4 49.4 49.4 49.4 49.4

Calculated flow t/h 2 X

219.02

2 X

23.03

2 X

30.14

2 X

37.78

2 X 56.01

Design pressure of the

attemperating water pipe

MPa(g) 4.0

Design temperature

attemperating water pipe

C 50

1.5 CRITICAL ROTATING SPEED

Sl No Rotor first-stage critical speed

(r/min)

second-stage critical speed

(r/min)

shaft design

value

design value

of the single

shaft

shaft system

design value

design value

of the single

shaft

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1 MP & HP rotor 1722 1621 >4000 >4000

2 LP A rotor 1839 1723 3521 >4000

3 LP B rotor 1903 1750 >4000 >4000

4 Generator rotor 984 1070 3400 3338

1.6 LUBRICATED OIL SYSTEM

Main oil tank

type set-mounted volume Max 43.8 m3 / operating

34.9m3

oil model oil 32 exterior

dimensions

7250 x 3360 x 2300 mm

Gas-exhausting of the oil tank

fan model AP(V)0350-0200-1 flow 1410 m3/hr

full pressure 3507 Pa rotating speed 2900 r/min

motor power 3kW manufacturer --

electric motor

model

YB2-100L-2 Power 3kW

voltage 415 V Current A

insulation rank F Rotating speed 2900 r/min

protection rank IP55 Manufacture

separator model M519x02.007 separator flow 1500 m3/h

separator origin

Main oil pump

type Spindle-driven

centrifugal pump

outlet water

pressure

1.372MPa

flow L/min inhalation

pressure

0.098 - 0.147 MPa

rotating speed 3000 r/min manufacturer

Oil turbine-driven booster pump (BOP)

drive pressure 1.372MPa outlet pressure 0.392 MPa

flow L/min

Start-up oil pump (MSP)

type OVCV flow 6300 L/min

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pressure 22.4m/0.192MPa rotating speed 1500 r/min

motor model power 45 kW

voltage AC 415V current A

rotating speed 1450 r/min insulation class F

Motor of the IC auxiliary lubricating oil pump(TOP)

type OVCV flow 281.1 m3/h

inlet pressure 0.35MPa

motor model power 55 kW

voltage AC 415V current 100 A

rotating speed 2930 r/min insulation rank F

(EOP) DC lubricating oil pump

type OVCV flow 229.2 m3/hr

outlet pressure 0.31MPa motor power 37kW

insulation rank stator B/armature B current 208 A


(EOP) motor of the DC lubricating oil pump

motor model KD power 37 kW

voltage DC 220V current 200 A


power 37 kW manufacturer

Host oil cooler

cooling area 595 m2 the number of

cooling pipes

cooling water quantity 500 m3/hr oil flow 4930 L/min

inlet oil temperature 63.8 C outlet oil

temperature

46 C

working pressure 0.6 MPa

Hydraulic system of the jacking oil equipment

type HP volume pump power 55 kW

voltage 415 V max flow 150 L/min

using pressure 16 MPa

Jacking oil pump

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model rotating speed 1475 r/min

flow lift

Motor of the IC/DC jacking oil pump

model impulse impulse power 55 kW/55 kW

rotating speed 1478 rpm/1500rpm power factor 0.85

voltage 415/220 current 94.1/284

Connection way /Y insulation rank

protection rank

Oil-conveying pump of main oil tank

model 2CV-29/3.6-1 lift 36 m

rotating speed 1440 r/min flow 29 m3/hr

shaft power 6.25 KW necessary Npsh 5 m

efficiency 85% manufacturer

Motor of the oil-conveying pump of main oil tank

model Y132-M-4 power 7.5 kW

voltage 415 V current

Connection way /Y rotating speed 1440 r/min

protection rank insulation rank F

manufacturer

Lubrication oil-conveying pump

model 2CY-29/3.6-1 lift 36 m


shaft power 6.25 KW necessary Npsh 5 m

efficiency 85% manufacturer

Motor of the lubrication oil-conveying pump

model Y132-M-4 power 7.5 kW



protection class insulation class F

manufacturer

Oil purification pump

model 100AY60B lift 38 m

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power 12.9 kW necessary Npsh

efficiency manufacturer

Motor of the oil purification pump

model YB160M2-2 power 15kW


connection way /Y rotating speed 2950 r/min

protection class insulation class

manufacturer

Sewage oil pump

model 100AY60B lift 38m


shaft power 12.9 kW necessary Npsh

efficiency manufacturer

Sewage oil pump motor

model YB160M2-2 power 15kW



protection rank insulation rank

manufacturer

Oil purification device

Model GJZ-12 working

pressure

0.5 MPa

Heater power 72kW water content

of oil after

treated

50 ppm

Motor power 4/4/1.5 kW oil cleanliness

after

processing

MOOG standard 4 stages

Manufacturer Zigong high-precision filter

Manufacturing Co Ltd.

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1.7 TURNING GEAR MOTOR

model YB2.180L-6 power 15 kW

voltage 415 V current A

rotating speed 975 r/min connection way /Y

power factor 0. 81 insulation rank F

1.8 EH OIL SYSTEM

EH oil pump motor

model Y225M-4 power 45 kW

voltage 415V current A

rotating

speed

1450 r/min insulation rank B

protection

rank

1P44 manufacturer

EH oil tank

type set-mounted volume 1.6 m3

oil model Three aryl residue

phosphoric acid fat fire

resistant oil

oil brand number FYRQUEL EHG

EH oil cooler

type horizontal tube cooling area 10.9 m2

temperature 80C/70C shell/pipe

side

design

pressure

0.52/1.6 MPa (shell/pipe side)

cooling water

flow

38 L/min design max cooling

water temperature

33 C

Circulating filter pump motor

motor model Y90L-4 voltage 380 V

current 3.7 A pressure 0.52 MPa

power 1.5 kW rotating speed 1400 r/min

Connection

way

Y insulation rank B

Accumulator

type butyl rubber bladder type pressure 8 MPa

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1.9 SPECIFICATION OF TDBFP

Small turbine

Type Single-cylinder,

single flow, impulse,

condensing type

Control

system

MEH

Number of the stage 7 stage max working

rotating

speed

6000 r/min

Rated power 12000 kW steam source Steam extraction #4

Exhaust pressure 11.9 KPa (a)

Manufacturer Dongfang Steam

Turbine Co., Ltd.

1.10 OIL PUMP PERFORMANCE SPECIFICATION

Name Numb

er

Type Oil

flow

m3/h

Oil

pres

sure

MPa

Rotati

ng

speed

r/min

Electric motor

Model Power kW Voltage

V

Main oil pump 1 Centrifugal 20 0.58 2930 70LY-

34x2

13 AC 415

Standby pump 1 Centrifugal 20 0.58 2930 70LY-

34x2

13 AC 415

Accident

reserve pump

1 Centrifugal 16 0.44 3000 70LB-45 7.5 DC 220

Jacking oil

pump

no

Turning gear

oil pump

no

1.11 MOTOR OPERATED FEED WATER PUMP

Motor-operated feed water pump

Model HPT300-330M-5S Type Beckmannia body core

package, horizontal

centrifugal pump

Rated flow 1155 m3/hr Rated rotating

speed

5873 r/min

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Inlet water pressure 2.38 MPa Inlet temperature 179.9 C

Lift 2367 m Necessary Npsh 58.4 m

Shaft power 8921.9 kW Efficiency 84.5%

Number of stages 5 Intermediate

bleed-off

position

Lift 2328 m Rotating

direction

Clockwise look from the

conveying end to feed-

water pump

intermediate bleed-off

flow

43.5 m3/hr Flow of

supercharging

stage

intermediate bleed-off

pressure

10.44 MPa Sealing mode Mechanical seal

Minimum recirculation

flow

295 m3/hr (590

m3/hr close

automatically)

Manufacturer

Motor operated feed water pump motor

Model YKS1000-4 Power 11600 kW

Current A Voltage 11000 V

Rotating speed 1490 r/min Connection way

Insulation class F Power factor 0. 9

Cooling type empty-water Protection class

Motor heater power Voltage of the

motor heater

Booster pump of motor operated feed water pump

Model HZB253-640 Type Single stage double

extraction horizontal-type

centrifugal pump

Flow 1198.5 m3/hr Rotating speed 1490 r/min

Water temperature 179.9C Inlet pressure 1.19 MPa

Shaft power 518 kW Lift 136m

Lift 136m Efficiency 85.7%

Necessary NPsh 6.43 m Manufactured by Shanghai Power Equipment

Maintenance Works Co Ltd.

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Electro-hydraulic coupler of motor-operated feed water pump

Model R17K500M Input rotating

speed

1490 r/min

Output rated speed 9033 r/min Rated output

power

9630 kW

Speed-regulating

range

25%-100% Rated sliding

difference

2.6 highest rotating

speed

1.12 HP HEATERS

Item Unit #1 HP heater #2 HP heater #3 HP heater

Model JG-2240-1 JG-1950-2 JG-1600-3

Type Horizontal, U-shaped tube, double passes

Manufacturer Harbin boiler plant

Heat transferring area m2 2240 1950 1600

Design temperature of

the shell side

C 420/290 360/260 490/230


shell side

MPa 7.5 4.7 2.7

Design temperature of

the tube side

C 310 280 250


tube side

MPa 28 28 28

Feed water flow t/h 1863.75 1863.75 1863.75

Inlet temperature of

feed water

C 245.9 215.2 181.5

Feed-water outlet

temperature

C 276.7 245.9 215.2

Heated steam flow t/h 134.071 114.767 91.692

Heated steam pressure MPa 6.133 3.821 2.182

Heated steam

temperature

C 389 324.5 469.9

Drain water

temperature

C 251.5 220.8 187.1

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Difference of the

upper end

C -1.7 0 0

Difference of the lower

end

C 5.6 5.6 5.6

1.13 LP HEATERS

Item Unit #5 LP heater #6 LP heater #7, #8 LP

heater

#7, #8 LP

heater

Model JD-1550-1-2 JD-1280-1-1

Type Single horizontal

Manufactured by Orient Steam Turbine Plant

Heat-transfer area m2 1050 1050 600 950

Design temperature

of the shell side

C 260 200 150 150

Design pressure of

the shell side

MPa 0.6 0.6 0.6 0.6

Design temperature

of the tube side

C 170 150 150 150

Design pressure of

the tube side

MPa 4.0 4.0 4.0 4.0

Difference of upper

end

C 2.8 2.8 2.8 2.8

Difference of lower

end

C 5.6 5.6 5.6 5.6

1.14 DE-AERATORS

Model GC-2150/GS-250 Model No-head deaerator

Design pressure 1.23 MPa Design

temperature

300C

Working pressure 1.083 MPa Working

temperature

356.9C

Valid volume 250 m3 Design highest

working temp.

360C

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Rated output 2150 t/h Rated inlet water

temperature

185.6C

Max output Steam loss 0.2%

Oxygen content 7g/L Weight in

operating state

380 t

Numbers of spray 2 Nozzle pressure

drop

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Rotating speed 2920 r/min Connection way

1.16 CONDENSER

Model N-40000 Cooling area 40000 m2

Type Double shell, double back-

pressure, single-stroke (in

terms of each shell)

Amount of

condensing steam

1145.5+66.8 t/h

(host + small)

Oxygen content of the

condensate water of

Hot well outlet

30g/L Design cooling

water flow

71496 t/h

The number of the

condenser copper tube

Design pressure of

the water chamber

0.4MPa

Design outlet cooling

water temperature

35.3 C (max38C)> Cooling medium Fresh water

Cleanness coefficient 0.85 Condenser design

pressure

10.2kPa

(9.1/11 .4)

Condensate water

temperature

46.5 C Expansion

connection

material

Stainless steel

Manufactured by Oriental Steam Turbine Plant

Condensate water pump

Type Vertical and tube structure Model C720III-4

Number of stages Single-stage double

inhaling inlet

Sealing type disc mechanical

seal

Flow (t/h ) 1639/1784 (max) inlet water

pressure (MPa)

2.9/3.2 (max)

Inhalation pressure

(kPa)

10.2 pump's rotating

speed (r/min)

1480

Efficiency 84.0% Manufacturer Changsha Pump

Co. Ltd.

Motor of the condensate water pump

Model YKSL2100-4 Power 2100 KW

Voltage 11 KV Current 134 A

Rotating speed 1480 r/min Manufacturer Xiangtan Motor

Co. Ltd

Rated current 252 A Power Factor 0.88

Insulation class F Manufacturer ABB

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1.17 WATER RING TYPE VACCUM PUMP

Manufacturer Ji monash association cone machinery Co., Ltd.

Two-stage vacuum pump

model TC-11

Inhalated dry air quantity (kg/h) 64

Inhalation temperature (C) 34.2

Inhalation pressure (kPa) 3.5

Limit vacuum (-kPa) 3.3

Rotating speed (r/min) 494

Vacuum pump motor

Model Y355L1-12

Power (kW) 110

Voltage (V) 415

Current (A)

Rotating speed (r/min) 494

1.18 CIRCULATING WATER SYSTEM

Circulating water pump

Type 96LKXA-30 Vertical

oblique flow pump

Flow 46044 t/h

Lift 30m Rotating speed 372 r/min

Efficiency >87% Manufacturer Changsha Pump Plant

Circulating water pump motor

Model YKS4800-16 type Power 4800 kW

Voltage 11000 V Current A

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Rotating speed 375 r/min Insulation class F (Xiangtan Electric

Machine Works)

1.19 COOLING WATER TOWER

Cooling area 9000 m2 Total height of

tower

150.1 m

Wind inlet

elevation

10.0 m (Relative

elevation)

Height of the filling

end elevation

10.25 m (Relative

elevation)

Filling top

elevation

11.25 m

(Relative elevation)

Throat elevation 112.482 m

(Relative

elevation)

Diameter of the

tower bottom

110m (or so) tower throat

diameter

66.50 m

Diameter of the

tower top

71.176 m Shaft plane size 4.8x4.8 m

Shaft height 17.3 m Circulating water

cooling ratio

55

Ratio of the

concentration ol

circulating water

3-4 coefficient of

controlling recycled

water not scaling

< 0.2

1.20 INTEGRATED PUMP HOUSE SYSTEM

Industrial pumps (three)

model 350X250CHN flow 900-1200 m3/h

lift 50 ~ 65m rotating speed 1450 r/min

Matched power 250 kW manufacturer

Industrial pump motor

model YKK450-4 power 250 kW

voltage 1100 V current 16.4 A

rotating speed 1491 r/min power factor 0.88

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Connection way protection class

insulation class F manufacturer Xiangtan Electric Machine

Works

makeup pump of circulating water (3)

model 500X450 CFN flow 1800 m3/h

lift 16 m rotating speed 980 r/min

Matched power 110kW manufacturer Bo Chiping original Pump

Co. Ltd.

Motor of makeup pump of circulating water(3)

model 315L1-6 power 110 kW

voltage 415 V current 188 A

1.21 MAIN PARAMETER LIMITS

Sl

No.

Parameter Unit Normal High limit Low limit Trip

1 Rotating speed rpm 3000 3360

2 Load MW 600 640

3 Initial steam

pressure

C 538 546 528 474/460

4 HP exhaust

temperature

C

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9 Differential

expansion of LP

cylinder

mm -4.6 <

differential

expansion

Documents

Technical Diary Turbine