Aiming at the problem of the high working temperature of the guide disc in the gas turbine engine test,the three-dimensional CFD model of the air system of the guide disc cavity in the gas turbine was established and the flow-heat coupling simulation method was adopted to analyze the main factors affecting the temperature rise along the cold air.And the inlet holes in the casing were optimized and compared.The results show that the main factors of cold air temperature along in the course are the impact temperature rise of the upper rim plate of the casing,the cooling temperature rise of the front cavity of the guide vane and the rear cavity of the first stage guide disc.The temperature and the equivalent stress of the cavity and the two-stage guide plate have been greatly reduced,and the strength and service life have been greatly improved which were verified by endurance test.
维普
万方数据