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Affiliation of Author(s):能源与动力学院

Journal:Hangkong Dongli Xuebao

Abstract:Casing test specimen for high pressure turbine(HPT)active clearance control(ACC) system of trim size was designed. Operation of active clearance control system was simulated under high temperature and high pressure to verify the flow characteristics of cooling collector and impingement cooling pipes, and investigate the temperature distribution rules of HPT casing as well as responsive characteristics of casing temperature to cooling airflow. Results showed that the pressure distribution of air supply manifold was very even; for impingement cooling pipes, the pressure rose gradually from inlet to the end, but the pressure became consistent as the area of orifice on the pipe increased; the maximum relative deviation of circumferential temperature distribution of casing were 4.8% and 5.8%, for non-operating and operating ACC system; when the ACC system was working, the temperature for turbine outer casing obviously decreased as cooling airflow increased; during the test, the average temperature for cooled parts on the casing decreased as much as 16%-37% up to expectation. Based on the test data, heat transfer model of HPT casing was validated and modified to be more precise and applicable. © 2018, Editorial Department of Journal of Aerospace Power. All right reserved.

ISSN No.:1000-8055

Translation or Not:no

Date of Publication:2018-01-01

Co-author:王鹏飞,Zeng, Jun,Li, Tianlu,Guo, Wen,Yang, Shangfeng

Correspondence Author:王鹏飞,zjz