M
Do you have idea why gas turbine isn't running on diesel but running on gas and change to diesel, please?
C
CSA
You haven't provided any useful information to help us understand your dilemma.
We don't know if you are asking why the unit can't be started and stopped on liquid fuel (diesel or distillate), or if there's some condition which would prevent it from being started and stopped on liquid fuel, or if you've even tried starting or stopping the unit while it's running on liquid fuel.
We don't know what kind of "gas" the unit is running, and what the make-up (constituents) of the "gas" are (high-BTU; low-BTU; high-Hydrogen; blast-furnace gas; refinery tail gas; some mix of gases).
We don't know what Frame-size machine you are referring, and it only appears that it is controlled by a Mark V Speedtronic turbine control system; and we don't know if it's a SIMPLEX or a TMR Mark V.
There's just too much we don't know about your site and the fuels in use at your site and the actual details of your situation. And, I'm not sure I understand the "problem" at all!
We don't know if you are asking why the unit can't be started and stopped on liquid fuel (diesel or distillate), or if there's some condition which would prevent it from being started and stopped on liquid fuel, or if you've even tried starting or stopping the unit while it's running on liquid fuel.
We don't know what kind of "gas" the unit is running, and what the make-up (constituents) of the "gas" are (high-BTU; low-BTU; high-Hydrogen; blast-furnace gas; refinery tail gas; some mix of gases).
We don't know what Frame-size machine you are referring, and it only appears that it is controlled by a Mark V Speedtronic turbine control system; and we don't know if it's a SIMPLEX or a TMR Mark V.
There's just too much we don't know about your site and the fuels in use at your site and the actual details of your situation. And, I'm not sure I understand the "problem" at all!
E
Eng.Engineer
UNIT(S) NUMBER(S) : T9E151
TYPE : PG 9171 E
GAS TURBINE APPLICATION : GENERATOR DRIVE
CYCLE : SIMPLE
TYPE OF OPERATION : BASE/PEAK
ALTITUDE : Sea level
COMPRESSOR : STAGES : 17 SPEED : 3000 R.P.M.
TURBINE : STAGES : 3 SPEED : 3000 R.P.M.
FUEL SYSTEM
Operating type (dual fuel) Light distillate + Natural gas
Fuel control signal SPEEDTRONIC control system
Fuel pump Accessory gear-driven. Continuous output screw type pump
Flow divider (starting motor) In line, free wheeling, 14 elements
Fuel oil stop valve Electro-hydraulic servo-control
Fuel oil filter(s) (H.P.) Two (2), full flow
Gas stop/ratio and control Electro-hydraulic servo-control valves
LUBRICATION SYSTEM
Lubricant Petroleum base
Total capacity 3,300 gallons (approx.)
i.e. 12,491 liters (approx.)
Main lube pump Shaft-driven, integral with accessory gear
Auxiliary lube pump A.C. motor-driven, vertical, submerged, centrifugal type
Emergency lube pump D.C. motor-driven, vertical, submerged, centrifugal type
Heat exchanger(s):
Type Oil heat to fresh water
Quantity Two in parallel
Filter(s) :
Type Full flow with transfer valve
Quantity Two (2)
Cartridge type Five micron filtration pleated paper
HYDRAULIC SUPPLY SYSTEM
Main hydraulic supply pump Accessory gear-driven, variable positive displacement, axial piston
Auxiliary hydraulic supply pump Driven by electric motor 88 HQ.
COOLING WATER SYSTEM (in closed loop)
Pumps Two (2) water pumps located on the water skid outside of the G.T. building
COMPRESSOR SECTION
Number of compressor stages Seventeen (17)
Compressor type Axial flow, heavy duty
Casing split Horizontal flange
Inlet guide vanes type Modulated
TURBINE SECTION
Number of turbine stages Three (3) single shaft
Casing splits Horizontal
Nozzles Fixed area
COMBUSTION SECTION
Type Fourteen (14) multiple combustors, reverse flow design
Fuel nozzles One (1) per combustion chamber
Spark plugs Two (2), electrode type. Spring-injected self retracting
Flame detectors Four (4), ultra-violet type
BEARING ASSEMBLIES
Quantity Three (3)
Lubrication Pressure lubricated
N° 1 bearing assembly (located in Active and inactive thrust and journal, all contained inlet casing assembly) in one assembly
Journal Elliptical
Active thrust Tilting pad, self-equalizing
Inactive thrust Tapered land
N° 2 bearing assembly (located in the Elliptical journal compressor discharge casing)
N° 3 bearing assembly (located in the Journal, tilting pad exhaust frame)
STARTING SYSTEM
Starting device Electrical starting motor
Torque converter Hydraulic with adjustor drive
Our turbine frame 9: not start on diesel but start on gas and change over to diesel. another turbine same frame9 same problem but today trip on diesel.
TYPE : PG 9171 E
GAS TURBINE APPLICATION : GENERATOR DRIVE
CYCLE : SIMPLE
TYPE OF OPERATION : BASE/PEAK
ALTITUDE : Sea level
COMPRESSOR : STAGES : 17 SPEED : 3000 R.P.M.
TURBINE : STAGES : 3 SPEED : 3000 R.P.M.
FUEL SYSTEM
Operating type (dual fuel) Light distillate + Natural gas
Fuel control signal SPEEDTRONIC control system
Fuel pump Accessory gear-driven. Continuous output screw type pump
Flow divider (starting motor) In line, free wheeling, 14 elements
Fuel oil stop valve Electro-hydraulic servo-control
Fuel oil filter(s) (H.P.) Two (2), full flow
Gas stop/ratio and control Electro-hydraulic servo-control valves
LUBRICATION SYSTEM
Lubricant Petroleum base
Total capacity 3,300 gallons (approx.)
i.e. 12,491 liters (approx.)
Main lube pump Shaft-driven, integral with accessory gear
Auxiliary lube pump A.C. motor-driven, vertical, submerged, centrifugal type
Emergency lube pump D.C. motor-driven, vertical, submerged, centrifugal type
Heat exchanger(s):
Type Oil heat to fresh water
Quantity Two in parallel
Filter(s) :
Type Full flow with transfer valve
Quantity Two (2)
Cartridge type Five micron filtration pleated paper
HYDRAULIC SUPPLY SYSTEM
Main hydraulic supply pump Accessory gear-driven, variable positive displacement, axial piston
Auxiliary hydraulic supply pump Driven by electric motor 88 HQ.
COOLING WATER SYSTEM (in closed loop)
Pumps Two (2) water pumps located on the water skid outside of the G.T. building
COMPRESSOR SECTION
Number of compressor stages Seventeen (17)
Compressor type Axial flow, heavy duty
Casing split Horizontal flange
Inlet guide vanes type Modulated
TURBINE SECTION
Number of turbine stages Three (3) single shaft
Casing splits Horizontal
Nozzles Fixed area
COMBUSTION SECTION
Type Fourteen (14) multiple combustors, reverse flow design
Fuel nozzles One (1) per combustion chamber
Spark plugs Two (2), electrode type. Spring-injected self retracting
Flame detectors Four (4), ultra-violet type
BEARING ASSEMBLIES
Quantity Three (3)
Lubrication Pressure lubricated
N° 1 bearing assembly (located in Active and inactive thrust and journal, all contained inlet casing assembly) in one assembly
Journal Elliptical
Active thrust Tilting pad, self-equalizing
Inactive thrust Tapered land
N° 2 bearing assembly (located in the Elliptical journal compressor discharge casing)
N° 3 bearing assembly (located in the Journal, tilting pad exhaust frame)
STARTING SYSTEM
Starting device Electrical starting motor
Torque converter Hydraulic with adjustor drive
Our turbine frame 9: not start on diesel but start on gas and change over to diesel. another turbine same frame9 same problem but today trip on diesel.
Please be clear: "...not start on diesel but start on gas..." Does that mean you have tried to start the unit on distillate but it won't fire, won't accelerate?
What process alarms are annunciated when you try to start on diesel?
Or does it mean your operating procedures don't specify that you can start the unit on distillate so you've never tried it and don't know if it will work?
WHAT HAVE YOU DONE TO TRY TO TROUBLESHOOT THE PROBLEM?
Has the unit ever started on distillate fuel?
When did this problem begin?
There has been a lot written on control.com about all the components of the liquid fuel system and how they all have to work together properly, particularly when starting. Use the 'Search' feature, and use the Search feature's Help function (because it's not quite intuitive) to search for "+liquid +fuel" or "+distillate" (without the quotes, and there's a big hint on how to use Search here on control.com!). There are lots of check valves (Liq. Fuel Check Valves; Liq. Fuel Purge Check Valves; Water Injection Check Valves; etc.); there are pressure regulators and filters.
When the unit runs on distillate does it have high exhaust temperature spreads, higher than when on gas, or lower?
How easy are the fuel transfers when you switch from gas to distillate?
Have you monitored the Liquid Fuel Bypass Valve during starting to see that the liq fuel flow-rate from the flow divider speed pick-ups is made to equal the liq fuel flow-rate reference?
Do the exhaust temperatures increase at all when trying to fire on liquid fuel?
Does the unit establish flame in any combustor while starting on distillate and then lose flame during warm-up and/or acceleration?
I wish you the best of luck with your problem(s). It's likely that English is not your first language, so that makes communication all the more difficult.
There is no easy, simple, one-line answer to whatever you're experiencing. I suggest you have someone familiar with the unit and the control system at your site come to site and observe whatever problem(s) you're having, and make suggestions or adjustments to help you. But, I don't think we're going to be able to do much for you on control.com for this problem.
Sorry!
But, do continue to use control.com; just, please, provide more useful information when you post about a problem. Like what you've done to troubleshoot the problem, when the problem began, etc. The more information you can provide, the better the responses you will receive.
What process alarms are annunciated when you try to start on diesel?
Or does it mean your operating procedures don't specify that you can start the unit on distillate so you've never tried it and don't know if it will work?
WHAT HAVE YOU DONE TO TRY TO TROUBLESHOOT THE PROBLEM?
Has the unit ever started on distillate fuel?
When did this problem begin?
There has been a lot written on control.com about all the components of the liquid fuel system and how they all have to work together properly, particularly when starting. Use the 'Search' feature, and use the Search feature's Help function (because it's not quite intuitive) to search for "+liquid +fuel" or "+distillate" (without the quotes, and there's a big hint on how to use Search here on control.com!). There are lots of check valves (Liq. Fuel Check Valves; Liq. Fuel Purge Check Valves; Water Injection Check Valves; etc.); there are pressure regulators and filters.
When the unit runs on distillate does it have high exhaust temperature spreads, higher than when on gas, or lower?
How easy are the fuel transfers when you switch from gas to distillate?
Have you monitored the Liquid Fuel Bypass Valve during starting to see that the liq fuel flow-rate from the flow divider speed pick-ups is made to equal the liq fuel flow-rate reference?
Do the exhaust temperatures increase at all when trying to fire on liquid fuel?
Does the unit establish flame in any combustor while starting on distillate and then lose flame during warm-up and/or acceleration?
I wish you the best of luck with your problem(s). It's likely that English is not your first language, so that makes communication all the more difficult.
There is no easy, simple, one-line answer to whatever you're experiencing. I suggest you have someone familiar with the unit and the control system at your site come to site and observe whatever problem(s) you're having, and make suggestions or adjustments to help you. But, I don't think we're going to be able to do much for you on control.com for this problem.
Sorry!
But, do continue to use control.com; just, please, provide more useful information when you post about a problem. Like what you've done to troubleshoot the problem, when the problem began, etc. The more information you can provide, the better the responses you will receive.
E
Eng.Engineer
The alarm:
WHILE UNIT STARTED ON FUEL OIL FAILURE TO IGNITE.
Thank
WHILE UNIT STARTED ON FUEL OIL FAILURE TO IGNITE.
Thank
