Equipment and method for testing mechanical properties of material in high-temperature fuel gas environment

By designing a material mechanical property testing device under high temperature and gas environment, and adopting a double-wall structure of the steady flow section component and a high-pressure cooling air system, the problem that existing equipment cannot simulate high pressure characteristics and unstable flow rate is solved, and accurate mechanical property testing of CMC materials under high temperature and high pressure environment is realized.

CN122409309APending Publication Date: 2026-07-17SHENYANG AVIATION FUEL TECH CO LTD
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Patent Information

Application Number
CN202610773143.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-06-01
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In existing high-temperature gas environments, the mechanical property testing equipment for CMC materials cannot simulate high-pressure characteristics, and the flow rate is difficult to stabilize and measure, resulting in test data that cannot accurately support the strength design analysis of CMC components under service conditions.

Method used

A material mechanical property testing device under high temperature gas environment was designed, including a test piece, a mounting base assembly, a loading and bonding block, a sealing strip, a plug assembly, a sealing sheet, an upper loading chain assembly, a lower loading chain assembly, a flow stabilization section assembly, and a load-bearing frame assembly. Through the double-wall structure of the flow stabilization section assembly and the high-pressure cooling air system, a stable high temperature gas flow field and cooling system are formed to ensure the mechanical property testing of the test piece under high temperature and high pressure environment.

Benefits of technology

The mechanical properties of CMC materials were tested under high temperature, high pressure and high speed gas environment, simulating the high temperature gas load conditions in actual applications, ensuring the accuracy of test data and the stability of equipment, and avoiding test errors caused by thermal deformation or damage.

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Abstract

The invention relates to the technical field of material performance testing, in particular to equipment and a method for testing mechanical properties of a material in a high-temperature fuel gas environment. According to the technical scheme, the device comprises a test piece, a mounting base assembly, a loading fitting block, a steady flow section assembly and a force bearing frame assembly, the force bearing frame assembly defines a fan-shaped annular space, the steady flow section assembly is arranged in the space, and circulating cooling water is introduced into a cavity area formed by a double-layer wall structure to achieve self-cooling; the central fuel gas flow channel provides a uniform high-temperature fuel gas environment for a test piece, the mounting seat assembly is matched with the cooling structure to introduce high-pressure cooling air, a clamping section of the test piece is purged and cooled, the sealing structure realizes multiple sealing to prevent high-temperature fuel gas leakage, and the loading chain assembly ensures accurate centering application of a load through a universal joint. The test piece test section is a middle straight section located in a high-temperature fuel gas environment, synchronous testing of multiple test pieces can be achieved, and working condition simulation authenticity, loading accuracy and equipment stability are considered.
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