叶尖间隙对涡轮性能影响的试验研究  

Experimental Study on Influence of Tip Clearance on Turbine Performance

作　　者：谷雪花 郝晟淳 张东海 卢俊崧 GU Xue-hua;HAO Sheng-chun;ZHANG Dong-hai;LU Jun-song(AECC Shenyang Engine Research Institure,Shenyang 110015,China)

机构地区：[1]中国航发沈阳发动机研究所,沈阳110015

出　　处：《航空发动机》2020年第4期78-81,共4页Aeroengine

基　　金：航空动力基础研究项目资助。

摘　　要：为了获取叶尖间隙对涡轮性能的影响规律,通过对某型发动机高压涡轮第1、2级叶尖间隙的主动调控,进行叶尖间隙对涡轮性能影响的试验研究。采用精密传感器对叶尖间隙进行测量,通过试验得到不同叶尖间隙下涡轮效率、换算流量、换算功以及出口流场的变化数据。结果表明:第1、2级叶尖间隙每增大1%,涡轮效率约降低0.58%~0.69%;存在1个叶尖间隙变化对涡轮效率影响较明显的敏感区;叶尖间隙变化对叶尖出口流场有明显影响。In order to obtain the influence of tip clearance on turbine performance,experimental study on the influence of tip clearance on turbine performance was carried out through the active control of tip clearance in the primary and secondary turbine stage of a high pressure turbine of a certain engine. The precision sensors were used to measure the tip clearance. The change data of turbine efficiency,conversion flow,conversion work and outlet flow field under different tip clearance were obtained by test. The results show that the turbine efficiency decreases by about 0.58%~0.69% when the tip clearance of the primary and secondary stage increases by 1%. There is a sensitive area where the change of tip clearance has obvious influence on turbine efficiency. The change of tip clearance has obvious influence on the tip outlet flow field.

关 键 词：叶尖间隙 涡轮效率 气动性能 高压涡轮 航空发动机 

分 类 号：V232.4[航空宇航科学与技术—航空宇航推进理论与工程]