technical data sheets_turbine

7/30/2019 Technical Data Sheets_turbine

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TURBINE AND AUXILIARIES (M1)

3.5SL. NO. DESCRIPTION UNITS BIDDERS DATA

1 Manufacturer and place of manufacturer

Voith Hydro, Germany, India, China,Brazil

2 Type / designation Vertical Francis Turbine

3 Number of turbines Nos 3

4 Turbine output

4.1* Rated output at design headof 300 m

MW 61.30

4.2* Maximum continuous outputat minimum net head of 274m

MW 73.50

5* Rated speed rpm 428.57

6* Maximum runaway speed atmaximum net head of

310 m

rpm 695

7* Specific speed - 32.77 (at optimum point)

8* Direction of rotation whenviewed from top

CCW

9 Turbine Discharge

9.1* At no load & design head m3 / sec ~2.5**

9.2* Under rated output at designhead of 300 m

m3

/ sec 22.18**

9.3* Under maximum continuousoutput at minimum net head

of 274 m

m3 / sec 28.77**

9.4* Under rated output atmaximum net head of 310 m

m3 / sec 21.56**

9.5* Under maximum continuousoutput at maximum net headof 310 m

m3 / sec 25.51**

10 Guide Vane openings

under following conditions

10.1* At no load & design head % ~12**

10.2* Under rated output at designhead 0f 300 m

% 85.2**

BAJOLI-HOLI HYDRO ELECTRIC PROJECT(3 X 60 MW)

ELECTRO MECHANICAL PACKAGEBIDDING DOC NO. : GBHHPL/LOT -3

TECHNICALDATA SHEETS

VOLUME 6SUBSECTION M1 PAGE 1 of 19


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10.3* Under maximum continuousoutput at minimum head 0f274 m

% 117.5**

10.4* Under rated output atmaximum net head of 310 m % 81.0**

10.5 Under maximum continuousoutput at maximum net headof 310 m

94.8**

11 Turbine efficiency atdesign head of 300 m andrated speed

11.1* at 120% rated output % 95.20**

11.2* at 100% rated output % 94.17**

11.3* at 75% rated output % 91.48**

11.4* at 50% rated output % 85.61**

12* Weighted averageefficiencies according toTechnical Specifications

93.25

13 Turbine efficiency atmaximum net head 0f 310m at rated speed

13.1* at 120% rated output % 95.03**

13.2* at 100% rated output % 93.78**

13.3* at 75% rated output % 90.98**

13.4* at 50% rated output % 84.76**

14 Turbine efficiency atminimum net head of 274m at rated speed

14.1* at 120% rated output % 95.32**

14.2* at 100% rated output % 94.93**

14.3* at 75% rated output % 92.72**

14.4* at 50% rated output % 87.25**






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15 Attach curves of turbinedischarge, output andefficiency for various head(maximum, rated andminimum) and guide vane

2.82-30778

2.82-30779

2.82-30780

2.82-30781

16 Factor of safety

16.1* Guaranteed minimum factorof safety under worstconditions based onminimum yield point of thematerial

Please see Turbine Design

Guidelines / Allowable Stress Levels

for clear definition of load cases and

allowable stresses

16.2 Name and location of thepart having the factor of

safety in 16.1 above

---do---

17 Momentary rise in speedon suddenly reducing loadto zero from:

17.1* 120% load % 56

17.2* 100% load %


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20.2.1 up n/a

20.2.2 down ~155+600(at rated condition)

21 Maximum unbalancedhydraulic thrust during worstoperating condition (specify

KN 800 (at load rejection)

22 Recommended setting ofturbine with respect to tailwater level when onemachine is running at 50%

1700.45 masl

23 Operational conditions

23.1 Cavitation guarantee / 8000

hours of operation

kg 3* (2kg for the runner , 1 kg for

non rotating parts)

23.2 Parts and area subjected to

cavitation erosionPl. refer to cavitation

gaurantee attached

23.3 Operational restrictions on

turbines for abovePl. refer to cavitationgaurantee attached

24* Guarantees against hydro

abrasion of underwater partsDuring detail engineering

25 Maximum noise level at

various place/locations.

25.1* At a distance of 2m 1m from

centerline of unit in turbine

pit

dB 95

25.2* At a distance of 0.5m from

wall face of spiral casing

dB During detail Engg

25.3* At draft tube manhole ( at a

distance of 1m)

dB During detail Engg

26 Runner

26.1* Material, composition & code CA6NM, ASTM A 743/Equivalent

26.2* Type designation- integralcasted or welded

Welded

26.3 Number of runner blades Nos 17

26.4 Discharge diameter mm 1800






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26.5 Entrance diameter mm 2570

26.6 Maximum diameter mm ~2600

26.7 Height of runner abovecenterline of spiral casing

m ~0.30

26.8 Depth of runner belowcenterline of spiral casing

m ~0.67

26.9 Weight (excluding shaft) kg ~8000

26.9.1 Maximum transport weight kg ~8000

26.9.2 Maximum erection weight kg ~8000

26.10 Maximum Peripheral

Velocity

m/s 58

27 Shaft

27.1* Material and composition Class D, ASTM A 668/Equivalent

27.2 Diameter mm

27.2.1 Shaft mm 560

27.2.2 Bore mm 150

27.3 Length mm ~3200

27.4 Weight kg ~7500

27.5 Type of coupling with

generator shaft and turbine

27.5.1* Generator Friction Coupling

27.5.2* Turbine Friction Coupling

27.6 Flange diameter mm ~1000

27.7 Flange thickness mm ~150

27.8 No. and diameter of flange

bolts

Nos

and mm

27.8.1 Generator M80x14






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27.8.2 Turbine M80x14

27.9 Procedure/method of

matching and alignment of

turbine shaft with generator

shaft, conforming standard

During Contract Phase

27.10 Material of coupling bolts,nuts, washers at its endflanges

42CrMo4 / Equi & EN10083 / Equi

27.11 Type of bolts mm Tensioner Bolts or SuperBolt

27.12* Critical speed for combinedturbine and generator Shaft

rpm > 670

27.13 Provision made for shaft and

runner lifting

Yes

27.14 Provision for Nut guards Yes

28 Turbine guide bearing

28.1* Type Tilting Pad, Self Lubricated

28.2 Location Fastened to Head Cover

28.3 No. of pads and size Nos 160 x 8 (May subject to change

during detailed engg)

28.4 Bearing area m2 0.026 per Pad

28.5 Percentage of contact area % During detailed engg.

28.6 Material of bearing pads Babbitt lined Structural steel

28.7 Type number and location ofInstruments as per PTS(Particular TechnicalSpecification)

Type,

Nos

28.7.1 Embedded temperaturedetectors

8

28.7.2 Dial type thermometer

828.7.3 Thermometers N/A

28.8 Cooling water requirements

28.8.1 Quantity LPM ~100






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28.8.2 Pressure range bar 3-3.5

28.9 Cooling coils

28.9.1 Number

Nos

20 to 30

28.9.2 Maximum safe workingpressure

bar During detailed engg.

28.9.3 Bursting pressure bar During detailed engg.

28.9.4 Pressure drop of waterthrough the cooling coils

bar < 1

28.9.5 Material Cupro Nickle

28.10Normal working temperatureof bearing C < 60

28.11 Maximum permissibletemperature of bearing

C < 80

28.12 Volume of Oil in bearing oilreservoir

litres ~ 400

27.13 Oil specification grade andmake

ISO VG 46

28.14 Temperature rise by RTD'sof the bearing whiledelivering rated output withcooling water supply at

25C.

C

28.14.1* Pads During detailed engg.

28.14.2* Oil During detailed engg.

28.15 Temperature rise by RTD'sof the bearing whiledelivering maximumcontinuous output withcooling water supply at25C.

C

28.15.1* Pads (absolute inlettemperature / outlet

temperature)

During detailed engg.

28.15.2* Oil (Temp rise) During detailed engg.

28.16 Operation capability of guidebearing (in minutes)forfollowing conditions ofoperation:






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28.16.1* At rated speed withoutcooling water supply

minutes 15

28.16.2* At runaway speed withcooling water supply

minutes 15

28.16.3* At runaway speed withoutcooling water supply

minutes 5

28.16.4* On emergency shutdown atfull load without coolingwater supply

minutes During detailed engg.

28.17* Losses in bearing at ratedoperating conditions

kW


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29.14 Maximum transportationdimensions

Length x

Width x

Height

(mm)

~5000X3500X2000

29.15 Details of protective coating /paints inside spiral

See painting specs with bid

29.16 Provisions made formeasurement of head,discharge and efficiency

Yes

29.17 Method of embedding spiralin concrete - description[without pressure / underpressure / layer for

With partial water Pressure

29.18 Size of manhole provided inthe inlet piece mm 600

29.19 Size of penstock / spiraldrain pipes and valves

250 NB

30 Stay ring

30.1* Material and composition ofspeed ring

S 355 J2+N DIN EN10025-2

/Equivalent

30.2* Guarantee against hydroabrasion for 8000 hrs. ofoperation

Pl. refer to cavitation gaurantee

attached

30.3* Preventive coating against

hydro abrasion (HVOF / Soft/ Other)

No coating against hydro abrasion

envisaged for stay ring

30.3.1 Material of coating NA

30.3.2 Thickness of coating mm NA

30.3.3 Hardness HV0.3 NA

30.3.4 Adhesive strength NA

31 Guide vanes

31.1* Number of guide vanes Nos 20

31.2* Composition and material ofguide vanes

Stainless Steel, CA6NM ASTM A743






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31.3 Dimension of guide vanes Length x

Width x

Height

(mm)

1500(including guide vanes Stems)

X 415

X 195

31.4 Number of servomotors foroperation of guide vanes

Nos 2

31.5 # Preventive coating againsthydro abrasion (HVOF / Soft/ Other)

HVOF and/or Softurb 80 Coating

31.5.1 Material of coating TC/CoCr 86/10-4

/ Polyurethane

31.5.2 Thickness of coating m 250 to 300 m

31.5.3 Hardness HV0.3 HVOF- HV0.3 1100 - 1300

/ Softurb 80 - 78 - 80 Shore A

31.5.4 Adhesive strength 60 MPa

31.6 Maximum leakage throughall guide vanes undermaximum head

31.6.1 Commissioning m3 / sec 0.34

31.6.2 After 8000 running hours m3 / sec 0.60

31.7 Material of guide vane bush Bronze alloy/Equi.

31.8 Type of lubrication of guidevane bushes

Self lubrication

31.9 Attach drawing for guidevane bush arrangement

During Detail Engg

32 # Protective coating onrunner, wicket gates,wear / face plates,labyrinths etc.

32.1 Type of coating used(HVOF/Soft/Other) HVOF and/or Softurb 80 Coating

32.2 Description of coatingprocedure at site

HVOF Coating can not be applied at

site.

Softurb 80 Coating can be applied at

site






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32.2.1 Material of coating TC/CoCr 86/10-4

/ Polyurethane

32.2.2 Thickness of coating m 250 to 300 m

32.2.3 Adhesive strength of coating 60 MPa

32.2.4 Hardness HV0.3 HVOF- HV0.3 1100 - 1300

/ Softurb 80 - 78 - 80 Shore A

33 Turbine pit liner

33.1 Inside diameter mm ~4000

33.2 Height mm ~4000

33.3Material thickness

mm ~10

34 Draft tube

34.1 Material and construction E250B IS2062/Equivalent

34.2 No. of Sections Nos 3 to 4 (For Transportation)

34.3 Length of draft tube exit fromunit centerline

mm 16650

34.4 Length of draft tube exit linerfrom unit centerline

mm 5000

34.5 Thickness mm 8

34.6 Height at exit mm 3500

34.7 Width of draft tube at exit mm 4180

34.8 Elevation of

34.8.1 Highest point m EL 1699.775

34.8.2 Lowest point m EL 1691.75

34.9 Discharge ring diameter mm 1804

34.10 Total weight kg 10000(excluding cones)

34.11 Details of painting along withpainting specification






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34.11.1 Inside See painting specs with bid

34.11.2 Outside See painting specs with bid

34.12 Man hole size mm 600

34.13 Tapping for

34.13.1 Cooling water system -grating / size

During detail engg.

34.13.2 Dewatering system -grating / size

During detail engg.

35 Draft tube cones

35.1 Flange details Welded flange at upper end

Dismentling flange at lower end35.2 Number of sections and their

weightNos

and kg

2 section

Upper = 2000kg

Lower = 3000kg

35.3 Method of dismantling By sliding flange

35.4 Painting specifications See painting specs with bid

35.5 Provision made for pressuremeasurement

Yes

36 Shaft seal

36.1 Major components of shaftseal - material composition

36.1.1 * Material of main sealing ring Phenol Resin + Cotton fabric

(HGW 2082 Mo/Equivalent)

36.1.2 * Maintenance seal Rubber- FBR 70/ Equivalent

36.2 Design pressure upto whichshaft seal will positively seal

bar ~1 to 2 bar in seal chamber

36.3 Requirement for sealing

water36.3.1 Pressure bar 3 to 5 bar at seal inlet

36.3.2 Quantity lpm ~50

36.4 Requirement formaintenance seal






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36.4.1 Air pressure bar 2 to 3 bar

36.4.2 Quantity cfm

(m3/sec)


36.5 * Maximum leakage throughsealing

lpm ~45

36.6 Attach general arrangementdrawing of shaft sealproposed


37 Head cover

37.1 * Material and composition E250B IS2062(Normalised)

37.2 No. of sections Nos 1

37.3 Arrangement for head coverdrainage

37.3.1 Pumps (numbers andquantity)

Nos 2 (1W+1S) each unit

37.3.2 Syphon diameter mm During detailed engg.

37.3.3 Ejector (water velocity) m3 / sec 2.5

37.4 Openings provided formaintenance of shaft seal


37.5 Provision for inspection oflabyrinth seals

Yes

37.6 Wear plate

37.6.1 Material Stainless Steel

37.6.2 Hardness During detailed engg.

37.6.3 Details of protective coating No preventive coating against hydro

abrasion in head cover.

38 Labyrinth

38.1 * Material Stainless Steel, CA6NM ASTM A743

38.2 Arrangement for pressurerelieving

Thru relief pipe

38.3 Coating HVOF Coating






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38.4 General assembly oflabyrinth [attach typicaldrawing or proposed


39 Servomotors

39.1 * Type Double acting

39.2 Number of servomotors anddimensions

2 Nos. Dimensions during detailed

engg.

39.3 General assembly ofservomotor showing fixationto guide vanes(attach typicaldrawing)


39.4 Material During detailed engg.

39.4.1 Cylinder During detailed engg.

39.4.2 Piston During detailed engg.

39.5 Bore of cylinder mm 160

39.6 Full Stroke length mm ~180

39.7 Stroke length correspondingto rated turbine output atdesign head

mm ~160

39.8 Oil pressure and range bar 80-120

39.9 Rating 120 bar

39.10 Provision for emergencyclosing from hydraulicoverspeed device

Yes

39.11 How synchronized guidevane operation will beachieved

By regulating link lever mechanism

39.12 Volume of oil of each

servomotor

Litres ~3.62/3.02

40 Turbine discharge flow-meter

40.1 * Type Ultrasonic 4 way 2 Path

40.2 * Make Reputed






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40.3 * Range of flow measurement During Detail Engg.

*40.4 Accuracy of measurement % During Detail Engg.

*40.5 Number of paths andmeasuring planes

During Detail Engg.

40.6 Transducer mountingarrangement (intrusive oroutdoor mounted)

During Detail Engg.

40.7 Brief description (attachpamphlets)


41 Performance of turbinecomponents againstabrasion / erosion by siltpresent in water.

41.1 Interval between needs forerosion maintenance /replacements (hours ofoperation)

41.1.1 Runner 4000 hr

41.1.2 Guide vane 4000 hr

41.1.3 Shaft seals 8000 hr

41.1.4 Wear plates 4000 hr

41.1.5 Pivot rings 4000 hr

41.1.6 Stay vanes 8000 hr

41.2 Likely erosion of underwaterparts due to given silt in8000 hrs of operation

41.2.1Runner

During detail engineering

41.2.2 Guide vanes During detail engineering






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41.2.3 Shaft seals During detail engineering

41.2.4 Wear plates During detail engineering

41.2.5 Stay vanes During detail engineering

41.3 Time for dismantling turbinecomponents formaintenance replacement oferoded components (from

41.3.1 Only runner replacementwith a spare one

1.5 week

41.3.2 Guide vanes replacement 1.5 week ; For complete set.

assuming available spare set41.3.3 Alignment Included in above

42 Self lubricating bearings

42.1 * Make Reputed

42.2 * Type PTFE with bronze backing

42.3 Attach catalogue During contract phase

43 Lubricating oil

43.1 Grade ISO VG46

43.2 Make Reputed

43.3 Equivalent -

43.4 Quantity 400 litre/unit for turbine guide bearing

44 Platform for runnerremoval from the bottom

44.1 Elevation ~1698 masl

44.2 Material Steel + wood structure

45 Hydraulic trolley for fixingand dismantling of runnerfrom the bottom






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45.1 Make & Type Voith Hydro & Manual Arrangement

(by PH crane)

45.2 Lift No lift

45.3 Height of runner and trolley During detailed engg

45.4 Other details (givepamphlets)

During detailed engg

46 Efficiency test (on turbine)

46.1 Proposed method &conforming IEC code

Thermodynamic method, IEC41

46.2 Taps provided for flow andpressure measurement

During detailed engg

46.3 Accuracy for measuring

instruments% During detailed engg

46.4 Tolerance During detailed engg

47 Painting specifications to beadopted


48 Packing specifications to beadopted


49 Instrumentation(Following details for eachtype of instrument i.e. RTDs,DTTs, flow and pressuretransducer, level sensors

etc. to be furnished)

49.1 Make Reputed

49.2 Details of Sensor During detailed engg.

49.2.1 Make & type During detailed engg.

49.2.2 Principle of operation During detailed engg.

49.2.3 Catalogue During detailed engg.

49.3 Details of IndicatingInstrument/Controller


49.3.1 Make and type During detailed engg.

49.3.2 Analogue or digital or LEDe During detailed engg.






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49.3.3 Level Switches for control During detailed engg.

49.3.4 Auxiliary Level Switch foralarm


49.3.5 Output for Data acquisitionSystem


49.3.6 Input voltage During detailed engg.

49.3.7 Special cables During detailed engg.

a) Type During detailed engg.

b)

c) Size During detailed engg.

d) Screening During detailed engg.

49.3.8 Overall accuracy of systemincluding sensor andindicator


50 Heaviest package forshipment

50.1 Name Guide apparatus

50.2 Weight ton 45

50.3Dimension (Length x Width xHeight) mm 3.7x3.7x2.5

51 Largest package forshipment

51.1 Name Stay Ring (if shipped in single piece)

51.2 Weight ton 22

51.3 Dimensions (Length x Widthx Height)

mm 5.2x3.5x4

52 Heaviest assembly to belifted by power housecranes

52.1 Name Guide apparatus (OR spiral case if

welded completely in service bay)

52.2 Weight ton 40 (OR 50)

52.3 Dimensions (Length x Widthx Height)

mm 3.7x3.7x2.5






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53 Local control panel Not applicable

53.1 Type / make

53.2 Applicable standard

53.3 Make of relays, MCB and

contactors

53.4 Make and type of connectors

and terminal blocks

53.5 Protection class

53.6 Type of PLC / RTU

53.7 Overall dimensions mm

(*) Data to be guaranteed by the bidders

** Single point efficiencies, corresponding guide vane openings and discharge are for informationpurpose only. However mean weighted efficiency(Hydraulic) is guaranteed. Water temperature of 15degree C is considered for efficiency calculation.

# Coating is being offered as an optional item.





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