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Special sealing test device for aerospace vehicle engine thrust chamber

A technology of sealing test and thrust chamber, which is used in engine testing, fluid tightness testing, and machine/structural component testing. Effect

Inactive Publication Date: 2020-11-13
BEIJING LANDSPACETECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the nozzle structure of the engine thrust chamber cannot achieve a good sealing effect.

Method used

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  • Special sealing test device for aerospace vehicle engine thrust chamber
  • Special sealing test device for aerospace vehicle engine thrust chamber
  • Special sealing test device for aerospace vehicle engine thrust chamber

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Embodiment Construction

[0025] The characteristics and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only configured to explain the present invention and to exemplify the principle of the present invention, and are not configured to limit the present invention. Additionally, the mechanical components in the figures are not necessarily drawn to scale. For example, the size of some structural components or regions in the drawings may be exaggerated for other structural components or regions, so as to facilitate the understanding of the embodiments of the present invention.

[0026] The orientation words appearing in the following description are ...

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Abstract

The invention provides a special sealing test device for an aerospace vehicle engine thrust chamber. The device comprises a pressure-bearing shell, a sealing ring and a compression ring which match one another, and the outer side wall of a whole body formed by the pressure-bearing shell, the sealing ring and the compression ring matches the inner wall of the throat part of a spray pipe of the thrust chamber; the pressure-bearing shell comprises a first side wall adapted to the inner wall surface above the throat part of the spray pipe of the thrust chamber; the outer edge of the compression ring comprises a second side wall matching the inner wall surface below the throat part of the spray pipe of the thrust chamber; the sealing ring is arranged between the first side wall and the second side wall. The sealing test device for the aerospace vehicle engine thrust chamber can effectively bear force by means of an expansion molded surface structure above the throat of the spray pipe, can freely penetrate through the throat of the closing-in structure, and is small in size, light in weight and convenient to install.

Description

technical field [0001] The invention relates to the field of the airtightness test of the thrust chamber of an aerospace vehicle engine, in particular to a sealing test device specially used for the thrust chamber of an aerospace vehicle engine. Background technique [0002] The thrust chamber nozzle of the aerospace vehicle engine is generally an expanding-retracting-expanding Laval structure. The propellant is atomized through the injector, and the propellant is burned in the combustion chamber, and the high-temperature and high-pressure gas is converted into high-speed gas from the nozzle. ejected, thereby producing a reactive thrust. After the thrust chamber is assembled into a space vehicle engine, it is necessary to conduct a strict airtight test on the complete engine system to verify the reliability of the seal. During the test, it is necessary to seal the throat of the thrust chamber to form a closed cavity for the system, and then inject compressed air. After the ...

Claims

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Application Information

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IPC IPC(8): G01M3/02G01M15/02
CPCG01M3/025G01M15/02
Inventor 杨富宁曹小平张昌武
Owner BEIJING LANDSPACETECH CO LTD