BRITISH THOMSON HOUSTON TURBINE

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Working parameters
Specifications
Operation Parameters
Alarms and actions
Oil pumps and lines
Regulators and Valves
Ejectors

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BRITISH THOMSON HOUSTON TURBINE

  1. 1. BTHBRITISH THOMSONHOUSTON TURBINE
  2. 2. WORKING PARAMETERS AND ALARM TURBINES
  3. 3. SPECIFICATIONS DESCRIPTION BTH T-G Type Pure impulse Pure impulse RPM (turbine) 3000 8000 RPM (alternater) 3000 1500 Coupling Directly coupled Coupled through gear box Capacity 6.25 MW ( 6.6 KV ) 18 MW ( 11 KV ) No of extractions 1st= 7 kg/cm2 1st = 9.5 kg/cm2 TWO 2nd = 2.8 kg/cm2 2nd = 3 kg/cm2 No of stages 12 HP=4 MP=3 9 HP=5 MP=1 LP=3 LP=5 Type of governing Nozzle control Nozzle control Type of governor Centrifugal Electronic No of valves HP=6 MP=8 LP=5 HP=5 MP=4 LP=4 Type of bearing Journal Tilting pad Turbine throttle valve Operated by oil pr Operated by oil pr when when pr breaks v/v pr breaks v/v gets shut, gets shut, can be can be operated operated manually manually also also
  4. 4. SPECIFICATIONS DESCRIPTION BTH T-GTripping Manual & Manual , mech & elec mechanical over overspend & due to speed various parametersOil pump Gear pump driven Gear pump driven from from shaft , gear shaft, steam driven , pump driven from centrifugal pump elect steam , gear pump driven elect drivenHot well control manual autoStart up ejector Present but remains Present can be started blind after turbine any time operationNo of ejectors 1 primary 2 primary 1 secondary 2 secondaryGland sealing steam Given from extnl Given form 3 kg/cm2 source 46 kg/cm2 line before starting line before starting turbine turbineGland steam is is exhausted to the Condense in glandexhausted to the atm atm vacuum condenserCritical speed 2170 rpm 1900 and 4800 rpm
  5. 5. SPECIFICATIONS AOP to be shut at 6700 rpm Ejector steam pr 44 kg/cm2 44 kg/cm2 Coolant for ejector Condensate Condensate steam & vapor Gland steam source 44 kg/cm2 line 3 kg/cm2 line from 2nd extraction Speed increase mech Manually by Electronically from during starting operating lever control room Extraction control One is set point & One is set point & other mechanism other is extraction pr is controller. Both are controller both are dial type & electronically mech devices controlledBTH SPECIFICATIONS AC GENERATOR TYPE:ABL CC 18 STANDARD: 3SS 2613/57 RATING : 7812.5 KVA CMR:6600 V, 685.1 AMPS PF :0.8 , 3 PH ,50 HZ, 3000 RPM EXITATION AT RATED OUTPUT: 110 V , 269 AMPS , CLASS B
  6. 6. BTH OPERATING PARAMETRES SEPT 07Sr Parameter OV unit alarm Sr Parameter OV unit alarno no m1 Thrust clearance ,inch 1.069 T 22 Cond extr pump amps 7.5 Amp2 Vacuum, cms 67 Cms 23 1ST stage extr pressure 7.5 k/c23 Steam pr 42 k/c2 24 2ND stage extr pressure 2.7 k/c24 Steam temp 395 0c 25 Main steam flow T/HR 52 Tph5 HP oil pr. 5 k/c2 26 1st Extr flow Tph6 LP oil pr. .8 k/c2 27 2ND Extr flow 32.5 Tph7 Ambient temp 37 0c 28 Condensate flow 10.5 Tph8 Oil cooler oil inlet 42 0c 29 Load MW 5 MW9 Oil cooler oil outlet 35 0c 30 Vanes opening HP 4.5 nos10 Oil cooler water inlet 32.8 0c 31 Vanes opening IP 6.5 nos11 Oil cooler water outlet 33.3 0c 32 Vanes opening LP 1.5 nos12 Bearing temp Thrust 43 0c 33 1st Extr steam temp 220 0c13 Bearing 1 – 6 temp 45-50 0c 34 2ND Extr steam temp 216 0c14 Gland steam pr HP AND LP 0.01 k/c2 35 Air cooler inlet 23 0c15 Air ejector vacuum 1st stage 65 Cms 36 Air cooler out let 24 0c16 Air ejector vacuum 2nd stage 63 Cms 37 Condensate temp ejector 46/56 0c17 Circulation pump motor current 104 Amp 38 Vapor temp inlet to ejector 46 0c18 Circulation pump pressure 0.15.8 k/c2 39 Air inlet to cooler 40 0c19 Circulation water inlet temp 33.2 0c 40 Air outlet cooler 56 0c20 Circulation water outlet temp 37.9 0c 41 LHS steam temp inlet to cond 50 0c21 Cond extr. Pump pressure 1.6 k/c2 42 RHS steam temp inlet to cond 48 0c
  7. 7. BTH ALARMS AND ACTIONS (OVER SPEED TRIP : 3250 RPM)Sr. Parameter Normal Alarm and actionNo value1 Bearing oil temp. high Min 36, (43-65) max 76 oc max 502 Oil pressure low 0.8 0.5 to 0.3 Trip the kg/cm2 turbine3 Oil temperature high Below 43 43 d.cel. Cooling water and not flow from cooler less than 394 Main steam temp low 39 to 42 Min 36 kg/cm2.Reduce kg/cm2 pr. ext set point (365 0c)5 Main steam temp high 46 kg/cm2 420 0c6 Vacuum low 65 cm hg 52 cm . Condenser hot well level (20 “ of hg)7 Alternator water inlet high Air cooler water flow
  8. 8. BTH OIL PUMPS AND LINES To pilot vv & sm drains TV Return from bearings0.8 KGBearings Oil base tank Disch from 5 KG GOV. Steam pumpEORV 3/7 kg valves MOP SUC SP returnOC D NRV OVERFLOWOC PURIFI Oil settling RE tank AOP
  9. 9. LINKAGES REGULATORS AND PILOT VALVES 5 3 1 2 4 6 HP SE2 ND I ST MAIN QU 5 3 7 1 2 8 4 6 MP EN CE 3 5 1 4 2 LPP HP GR Set point 2 nd extr P 1ST R Set point 1 st extr
  10. 10. 2 nd ext 1 st ext C Head end BTH GEAR VALVES AND PILOT VALVES ARRANGEMENT O C O SV SG TC ETG HP IP LP IP TV TV
  11. 11. EJECTOR BTH 46 Steam T NC VENT TO R Y I MA PR Y D AR O N SEC TO CO NDEN SER condensate condense vapor condense steamSTEAM ejector
  12. 12. 1ST 2ND CONDENSEROTHER DRAINS M M HP GLAND STEAM HP DRAIN CHEST BLOW DOWN 46 STEAM HP SIDE GLAND LEAK DRAIN LP IP SIDE GLAND LEAK LP TO ST TRAP LP SIDE GLAND LEAKHP / LP GLAND SEALING AND DRAINS LP GLAND COND TO CONDENSER
  13. 13. BTH FEEDERS (Total Amps – 480 load : 4.85 MW)Feeder Service6250 kw T A Exciter panel (235 A / 95 V)6250 kw Main incomer (485 A / 6500 V / 0.83 PF / 4.85 MW)1 Machine drive motor PM 4 Main Motor drive 35 A2 Machine house PM 4 Rollers 85 A3 Stock preparation plant PM 4 75 A4 bagass PM 1 + 55 / 150 hp pump house 50 A5 bamboo Old pulp mill + lime klin + pump house 25 A6 Boiler no 7 plant + TG control room +Colony Lighting 65 A7 S/R plant + Dorr plant + TW 3,4,7,8,9,16 95 A8 MV section 50 A

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