Optimization method for integrated design of non-circular vent holes in turbine seal plate

Abstract

An integrated design optimization method for non-circular air vents on a turbine sealing disc, involving an aero-engine. 1) Establish a two-dimensional geometric model of the turbine rotor, generate a two-dimensional grid model of the turbine rotor, and perform strength analysis; 3) Perform strength analysis on the 3D single-hole sector sub-model, compare the strength analysis results of the 2D grid model of the turbine rotor, if the error is acceptable, complete the transformation Dimensional sub-model modeling, if the error is unacceptable, return to step 2); 4) Design non-circular vents, calculate the single-hole area of ​​non-circular vents, the number of vents and the sector angle of the three-dimensional sub-model; 5) Automatic modeling and automatic subnetting; 6) Establish a mathematical model for ventilator optimization. The stress distribution of the hole edge of the air hole of the turbine sealing plate can be made more uniform, and the fatigue life of the sealing plate can be greatly improved.

Description

technical field [0001] The invention relates to an aero-engine, in particular to an optimization method for the integrated design of a non-circular ventilation hole of a turbine sealing disc. Background technique [0002] The engine is the "heart" of the aircraft. It is one of the important components of the aircraft, the driving force for the rapid development of the aircraft, and a key factor in determining the performance, cost and reliability of the aircraft. With the development of engine technology and the improvement of engine structure, great breakthroughs have been made in the aviation field. Turbines are very important to aero engines. It drives the compressor through a shaft and transmits part of the power to the accessories. The most notable features of aviation turbine engines are high power, high temperature gas, high speed, high load and high efficiency. Turbines, especially high-pressure turbines, work in the harshest environments. As the component with ...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a method that can effectively reduce the stress on the edge of the vent hole and prolong the fatigue life of the turbine sealing plate in order to solve the problems of serious stress concentration on the edge of the circular vent hole of a certain turbine sealing plate in the prior art. Optimization method for integrated design of non-circular vent holes in turbine seal plate

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