一种氢氧燃烧热环境试验装置及方法

By designing a hydrogen-oxygen combustion thermal environment test device, and using pre-tightened bolts to simulate the centrifugal load of turbine blades and achieve sealing, the problem of simulating the mechanical load of turbine blades under high temperature and high pressure environment was solved, and the flexible adjustment and sealing effect of the flow channel were realized.

CN117629786BActive Publication Date: 2026-07-17BEIJING AEROSPACE PROPULSION INST

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING AEROSPACE PROPULSION INST
Filing Date
2023-10-20
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies make it difficult to safely and reliably simulate mechanical loads on aerospace impact turbine blades under high-temperature and high-pressure hydrogen-oxygen combustion environments, especially for smaller blades that are difficult to simulate centrifugal mechanical loads using fatigue testing machines.

Method used

A hydrogen-oxygen combustion thermal environment test device was designed, including a main body, a concave baffle, a convex baffle, a combustion chamber connection device, a tail connector, a tail fixing baffle, and pre-tightening bolts. The pre-tightening bolts are used to apply pre-tightening force to simulate the centrifugal load of the blades, and the reaction force of the pre-tightening bolts is used for sealing.

Benefits of technology

It achieves safe and reliable mechanical load simulation of turbine blades under high temperature and high pressure hydrogen-oxygen combustion environment. The flow channel design can be quickly replaced according to needs, with good sealing effect and precise mechanical load control.

✦ Generated by Eureka AI based on patent content.

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Abstract

本发明涉及一种氢氧燃烧热环境试验装置及方法,包括装置主体、凹形挡板、凸形挡板、燃烧室连接装置、两个尾部连接件、两个尾部固定挡板、两个预紧螺栓、叶片试件;凸形挡板插入装置主体上端开口,凹形挡板插入装置主体下端开口,凸形挡板、凹形挡板之间的空隙形成试验流道;叶片试件从装置主体中心穿过且位于试验流道最低处,轴向与试验流道方向垂直;叶片试件两端设有螺纹孔,预紧螺栓从尾部固定挡板穿入,并旋入叶片试件的螺纹孔施加预紧力,模拟试验过程中的叶片离心载荷。本发明解决了在高温高压氢氧热燃气环境下安全可靠性地对航天涡轮叶片施加机械载荷的问题。
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