Supervisor:
Southwest Ordnance Industry Bureau
Organizer:
Chongqing Ordnance Industry Society
Chongqing University of Technology
Chongqing University of Technology
Overall performance study of variable geometry turbine gas turbine
| DOI: | 10.11809/bqzbgcxb2024.02.011 |
| Keywords: | variable geometry high pressure turbine; variable geometry medium pressure turbine; variable geometry power turbine; study on performance; gas turbine |
| Abstract: | In order to deeply understand the mechanism of the influence of variable geometry turbine on the overall performance of gas turbine, a component level simulation model of gas turbine was established, and then the change in the overall performance of gas turbine was systematically analyzed by varying the throat area of the first stage guide vane of high pressure turbine, medium pressure turbine and power turbine respectively, and the variation in the overall performance of gas turbine was obtained for each section without considering the influence of the adjustment mechanism at both ends of the guide vane and the guide vane clearance on the turbine efficiency. The results show that when the control law of keeping the inlet temperature of high pressure turbine constant is adopted, increasing the high pressure turbine flow capacity of gas turbine, the shaftdelivered power and specific fuel consumption of gas turbine increase continuously, and increasing the high pressure turbine flow capacity by 10%, the shaft delivered power and specific fuel consumption increase by 2.83% and 1.13% respectively; increasing the medium pressure turbine flow capacity of gas turbine leads to the decrease of shaft delivered power and specific fuel consumption of gas turbine. The shaft delivered power decreases by 9.96% and the specific fuel consumption increases by 3.63% when the medium pressure turbine flow capacity increases by 10%; the power turbine flow capacity increases, the shaft delivered power of the gas turbine increases and then decreases slightly, and the specific fuel consumption increases.When the flow capacity of the power turbine increases from 0 to 10%, the shaft delivered power decreases by 0.05%, and the specific fuel consumption increases by 2.01%. |
| Issue: | Vol. 45 No. 2 (2024) |
| Published: | 2024-02-28 |
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