复合材料薄壁机匣热内压试验技术  

Thermal Internal Pressure Test Technology of Composite Thin-walled Casing

作　　者：高世阳 杨峰 王晓森[2,3] 刘永清 呼东亮[2,3] 陈子光[4] GAO Shiyang;YANG Feng;WANG Xiaosen;LIU Yongqing;HU Dongliang;CHEN Ziguang(The third military representative in Tianjin area,The Naval Armament Department in Beijing regional military representative Bureau,Tianjin 300202,China;Tianjin Aerospace Relia Technology Co.,Ltd.,Tianjin 300462,China;Beijing Institute of Structure and Environment Engineering,Beijing 100076,China;School of Aerospace Engineering,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]海装北京局驻天津地区第三军事代表室,天津300202 [2]天津航天瑞莱科技有限公司,天津300462 [3]北京强度环境研究所,北京100076 [4]华中科技大学航空航天学院,武汉430074

出　　处：《强度与环境》2023年第5期71-77,共7页Structure & Environment Engineering

基　　金：国家自然科学基金(12372208)。

摘　　要：针对航空发动机复合材料薄壁机匣的热气流压力载荷试验问题,研制了一种可满足370℃,1.34MPa的机匣热内压试验技术,并通过试验验证了技术的有效性。受试腔体由机匣试验件和所设计的试验装置合围成一套可以施加温度和压力载荷的被试腔体结构,能够有效解耦腔内压力对装置产生的轴向力,避免轴向力传递至机匣试验件。试验装置中的关键密封结构承载活塞密封采用FFKM全氟醚O型密封圈,可耐高温330℃。对承载活塞盘进行了一维简化热传导解析分析和三维热传导仿真分析,三维仿真结果相比一维简化解析解能够更准确的反应承载活塞盘的内部温度场。经试验验证,所研制的试验装置有效利用了结构传热的梯度降温性能和与环境的对流散热作用,突破了密封材料的适用温度局限,可以满足机匣件热内压试验密封要求。Aiming at the problem of thermal internal pressure load test for aero-engine composite thin-wall casing.A kind of thermal internal pressure test technology of casing which can meet 370℃and 1.34MPa is developed.the effectiveness of the technology is verified by experiments.The test chamber structure enclosed by the test casing and the designed parts.The test chamber structure can be subjected to temperature and pressure loads.This test chamber can decouple the axial force generated by the internal pressure and avoid the axial load acting on the test casing.The key sealing structure in the test device is the bearing piston,which adopts FFKM perfluoroether O-ring seal,and can withstand high temperature of 330℃.One-dimensional simplified heat conduction theory analysis and three-dimensional heat conduction simulation analysis are carried out for the bearing piston.The three-dimensional simulation results can reflect the internal temperature field of the bearing piston more accurately than the one-dimensional simplified theoretical solution.The experimental results show that the designed test device effectively makes use of the gradient cooling performance of the structure's heat transfer and the convective heat dissipation effect with the environment.The designed test device breaks through the applicable temperature limitation of the sealing material and can meet the sealing requirements of the thermal internal pressure test.

关 键 词：航空发动机机匣 复合材料 热内压 密封装置 载荷解耦 试验验证 

分 类 号：V216.4[航空宇航科学与技术—航空宇航推进理论与工程]