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Construction Features
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ACCESSORY GEARBOX-GT Application
The Accessory Gear units of this type are specially designed for compact turbo-alternator units with the following functions:
- To drive the "Turbine auxiliaries" at appropriate speeds
- Atomizing Air compressor
- High pressure Hydraulic Pump
- Fuel Pump
- Main Oil Pump
- To drive the turbine through its starting device in the starting process.
- They are equipped with an integral Main Oil Pump.
| Sl |
Model |
GT Frame Type |
Design Standard |
Driven Equipment |
| 01 |
BA71BA |
FR3 |
AGMA |
MOP, MHOP, FUEL PUMP,
AUTOMIZING AIR COMPRESSOR
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| 02 |
AA51FA |
FR5/FR6 |
AGMA |
| 03 |
EA51FA |
FR5/FR6 with HS FP |
AGMA |
| 04 |
AA30AA |
FR9E |
AGMA |
| 05 |
EA30AA |
FR9E with HS FP |
AGMA |
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LOAD GEARBOX-GTG APPLICATION
The Load Gear units are speed reducers between Gas Turbine and Generator.
The Main components of gearbox are as below
Gearbox housing: Gray iron casting/ MS fabricated type
Gear Set: Single /Double Helical gears
Radial Bearings: Hydrodynamic( Offset halve, Four lobe, two lobe and Cylindrical
type)
Thrust Bearings: Taper land type & Tilting pad type
Oil Deflector
Instrumentation system (Thermometers, Thermocouples, RTDs, vibration sensors)
| Sl |
Model |
GT Frame Type |
Power Rating |
Speed Ratio |
Design Standard |
| 01 |
VF63C |
FR3 |
13 MW |
6513/1500 |
API-613 |
| 02 |
VF63R |
FR5-3000 RPM |
31.5 MW |
5120/3000 |
API-613 |
| 03 |
TX80/3C |
FR5-1500 RPM |
31.5 MW |
5109/1500 |
API-613 |
| 04 |
TRL65CV |
FR6 |
54 MW |
5163/3000 |
API-613 |
| 05 |
TX71/1C |
6FA |
90 MW |
5231/3000 |
API-613 |
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GEARBX-VF63R-(FR5-3000 RPM GTG APPLICATION) |
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GEARBX-TRL65CV-(FR6 GTG APPLICATION) |
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TX80/3C:Fr5-1500 RPM GTG APPLICATION |
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GEARBX-TX71/1C-(FR6FA GTG APPLICATION |
STEAM TURBINE APPLICATION
The Load Gear units are speed reducers between Gas Turbine and Generator.
The Main components of gearbox are as below
Gearbox housing: Gray iron casting/ MS fabricated type
Gear Set: Single /Double Helical gears
Radial Bearings: Hydrodynamic( Offset halve, TPJ, and Cylindrical type)
Thrust Bearings: Taper land type & Tilting pad type
Oil Deflector
Instrumentation system (Thermometers ,RTDs, vibration sensors)
| Sl |
Model |
Power Rating |
Speed Ratio |
Design Standard |
| 01 |
TX80/5C |
20.6 MW |
8017/1500 |
API-613 |
| 02 |
BH80/3D |
16.7 MW |
5015/1500 |
API-613 |
| 03 |
TX75/5C |
17.2 MW |
8019/1500 |
AGMA 6011 |
| 04 |
BH65/3D |
13.73 MW |
5650/1500 |
AGMA 6011 |
| 05 |
BH61/1D |
43.8 MW |
5025/3000 |
AGMA 6011 |
| 06 |
BH65/2D |
38.5 MW |
6349/3000 |
AGMA 6011 |
| 07 |
BH70/3D |
21 MW |
5015/1500 |
AGMA 6011 |
| 08 |
BH50/7D |
1.065 MW |
10989/1500 |
API 613 |
| 09 |
BH72/4D |
20 MW |
6310/1500 |
AGMA 6011 |
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GEARBOX FOR STEAM TURBINE APPLICATION |
GEARBOX FOR BFP DT APPLICATION
To function as a speed reducer between high speed Steam Turbine and low speed
Booster pump.
Applicable standard: AGMA 6011 Latest edition |
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GEARBOX FOR BFP APPLICATION |
GEARBOX FOR ACC FAN APPLICATION
Function: Speed reducer between Electric Motor and Fan of Air cooled
condenser.
Applicable standard: As per applicable AGMA standard |
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GEARBOX FOR ACC FAN APPLICATION |
GEARBOX-SUCKER ROD PUMP APPLICATION
Function: Gear Reducer to transfer the power from motor to the crank of SRP
unit.
Standard: API 11E & applicable AGMA standard
Gearbox Type: Two stage Double Helical Type
| Sl |
GEAR REDUCER SIZE |
PEAK TORQE RATING(IN.LB) |
Gear Ratio |
Design Standard |
| 01 |
228D |
228000 |
28.78 |
API-11E |
| 02 |
320D |
320000 |
28.78 |
API-11E |
| 03 |
456D |
456000 |
28.78 |
API-11E |
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GEARBOX-SUCKER ROD PUMP APPLICATION |
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