Method for correcting performance parameters of inter-stage bleed air of heavy-duty gas turbine compressor components

CN122305056APending Publication Date: 2026-06-30CHINA UNITED GAS TURBINE TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA UNITED GAS TURBINE TECH CO LTD
Filing Date
2026-05-22
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

In existing technologies, interstage bleed air in heavy-duty gas turbine compressors can cause discontinuities in inlet and outlet air mass flow rates, leading to errors in performance parameter calculations, especially overestimation of temperature rise efficiency and torque efficiency.

Method used

By obtaining the overall pressure ratio and thermodynamic performance parameters of the gas turbine, the isentropic compression power and actual power consumption of the compressor outlet air are calculated. Combined with the numerical relationship of interstage bleed air, the temperature rise efficiency and torque efficiency are corrected.

Benefits of technology

It effectively reduces the deviation in the calculation of bleed air performance, accurately calculates the temperature rise efficiency and torque efficiency under interstage bleed air conditions, and fully considers the problems of airflow discontinuity and additional power loss.

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Abstract

This application proposes a method for correcting the interstage bleed air performance parameters of a heavy-duty gas turbine compressor component, comprising: obtaining the overall pressure ratio of the gas turbine; obtaining the thermodynamic performance parameters of the gas turbine compressor; based on the overall pressure ratio and thermodynamic performance parameters, obtaining the first isentropic compression power and the first actual power consumed by the compressor outlet air; based on the thermodynamic performance parameters, obtaining the second isentropic compression power and the second actual power consumed by the air bleed out from the compressor interstage; based on the numerical relationship between the first isentropic compression power, the second isentropic compression power and the first actual power consumed, the second actual power consumed, obtaining the temperature rise efficiency considering interstage bleed air; and based on the numerical relationship between the first isentropic compression power, the second isentropic compression power and the compressor torque value, obtaining the torque efficiency considering interstage bleed air. The technical solution of this application can reduce the deviation in bleed air performance calculations.
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