Annular ejector for high altitude environment simulation test

Abstract

The invention relates to an annular ejector for a high altitude environment simulation test, which is characterized by comprising an adapter flange, an ejecting nozzle, an ejecting gas inlet pipe and an ejector outer tube. The ejector nozzle is arranged in the ejector outer tube and in tube threaded connection with the adaptor flange fixed with the ejector outer tube through a bolt assembly, one end of the ejector outer tube is of a boss structure, and a seal member is arranged between the adaptor flange and the boss structure. The annular ejector for the high altitude environment simulation test adopts split design, abandons traditional integral design, and can adjust the performance in a certain range only by adjusting the specification and dimension of the ejector nozzle according to the requirement of the test without changing the whole annular ejector and dismounting a connecting pipeline so as to improve working efficiency and effectively reduce test cost.

Description

Technical field [0001] The invention relates to a gas ejector, in particular to a simulated test ring ejector for engine ground simulation high-altitude low-pressure environment work. Background technique [0002] The high-altitude engine should conduct a high-altitude environment simulation test when interviewing the vehicle on the ground to simulate the high-altitude environmental pressure, temperature, etc., that is, create an environment similar to high-altitude or space conditions in the ground test equipment, and make the engine perform a thermal test in this environment to assess its Performance, reliability, etc. Annular ejector is a kind of ejector pump, which is gradually used in high-altitude simulation tests such as solid engines and ramjet engines. The large-scale active ejection high-altitude simulation test system is huge and complex. When studying the parameter matching of the ejection system, optimizing the system structure, and expanding functions, it is imposs...

AI Technical Summary

Problems solved by technology

The large-scale active ejection high-altitude simulation test system is huge and complex in structure. When studying ejector system parameter matching, optimizing system structure, and expanding functions, it is impossible to conduct a large number of experimental studies due to factors such as cumbersome ejector replacement and high test costs. than the high-altitude simulation test system has become a solution

[0003] However, there are still problems with this solution: due to the different test requirements, the parameter configuration of each test is also different, so it is still necessary to configure the corresponding ejector according to the parameter requirements; in addition, due to the high-speed gas washing the ejector, the connection method Parts such as flanges and nozzles are prone to wear, which also requires regular replacement of the ejector

The ejector is a key part of the high-altitude environment simulation test system. There are many connecting pipelines, which are cumbersome to replace, costly and take a long time to prepare for the test.

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