Systems and methods for off-grid validation testing with undersized load compressor
AssigneeDoosan Enerbility Co., Ltd.
InventorAlexander Bograd
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to off-grid testing of a gas turbine engine using an undersized load compressor as part of the testing apparatus. By lowering the pressure experienced by the gas turbine engine at its intake and/or exhaust, validation testing can be performed at the gas turbine's maximum combustion temperature and/or maximum cycle pressure ratio without exceeding the power output that the load compressor is able to absorb.
Claims19
A system for off-grid testing of a gas turbine engine with an undersized load compressor, the system comprising:
- a gas turbine engine having a full-speed full-load (“FSFL”) design power output, the gas turbine engine comprising a compressor having an air intake, a combustor, a turbine, a rotary shaft coupling the turbine to the compressor;
- an exhaust hood coupled downstream of the gas turbine engine;
- a load compressor having a maximum load smaller than the FSFL design power output of the gas turbine engine, the load compressor mechanically coupled to a rotary shaft of the gas turbine engine, the load compressor having an exhaust port to exhaust high-pressure air from the load compressor;
- an intake throttle fluidly connected to the air intake of the compressor of the gas turbine engine, the intake throttle configured to reduce air pressure at the air intake;
- an injection nozzle in fluid communication with the exhaust hood of the system;
- and
- a bypass conduit fluidly connecting the exhaust port of the load compressor with the injection nozzle for communicating the high-pressure air from the load compressor to the exhaust hood of the system.
A method of off-grid testing a gas turbine engine with an undersized load compressor, the method comprising:
- mechanically coupling a rotary shaft of the gas turbine engine with a rotary shaft of the load compressor, wherein the gas turbine engine has a full-speed full-load (“FSFL”) design power output and the load compressor has a maximum load smaller than the FSFL design power output of the gas turbine engine;
- simulating an operating condition for the gas turbine engine using high-pressure air generated by the load compressor;
- and
- generating test data based on the simulation of the operating condition;
- wherein the step of simulating an operating condition comprises establishing a first pressure within an exhaust hood of the gas turbine engine that is less than an ambient air pressure.
A system for off-grid testing of a gas turbine engine having a full-speed full-load (“FSFL”) design power output, the gas turbine engine comprising a compressor having an air intake, a combustor, a turbine, and a rotary shaft coupling the turbine to the compressor, the system comprising:
- a load compressor having a maximum load smaller than the FSFL design power output of the gas turbine engine, the load compressor capable of being mechanically coupled to a rotary shaft of the gas turbine engine, the load compressor having an exhaust port;
- an intake throttle fluidly connected to the air intake of the compressor of the gas turbine engine, the intake throttle configured to reduce pressure of air at the air intake;
- an exhaust hood configured for coupling to the gas turbine engine so that exhaust gas from the turbine can be collected;
- an injection nozzle in fluid communication with the exhaust hood;
- and
- a bypass conduit fluidly connecting an exhaust port of the load compressor with the injection nozzle for communicating high-pressure fluid from the load compressor to the exhaust hood.
Dependencies are inferred from the claim text.