Sealing assembly structure of glass material and metal for rocket engine

Abstract

The invention relates to a sealing assembly structure of a glass material and metal for a rocket engine. A sealing pad is arranged between a glass cylinder section and a meal cylinder section in a combustion chamber, a sealing ring is respectively arranged at two sides of the sealing pad, and the sealing rings and the sealing pad are compacted by carrying out slotting and positioning on the sealing pad and the metal cylinder section and cooperatively fixing the end surface of the metal cylinder section and the end surface of the glass cylinder section by virtue of the step design of the end surface of the metal cylinder section, so that a double-layer sealing mechanism is formed between the metal cylinder section and the glass cylinder section; and compared with a sealing mode of a single sealing pad and a sealing pad, the sealing assembly structure disclosed by the invention is better in sealing and shockproof effects, and can ensure the sealing requirement and the shockproof requirement of the engine simultaneously.

Description

technical field [0001] The invention relates to the technical field of sealing, in particular to a sealing assembly structure between glass and metal used in a rocket engine. Background technique [0002] Existing combustion chambers are usually made of opaque metal materials, but with further research on the combustion process of rocket engines, it is increasingly necessary to obtain internal flame images, analyze internal flow field structure and temperature distribution, etc. Other parameters to verify the results of theoretical analysis and simulation. [0003] At present, with the development of other cooling technologies such as eddy current cooling technology, cooling the chamber wall of the combustion chamber can keep the temperature of the chamber wall of the combustion chamber not very high. Therefore, people can realize the use of transparent glass materials with weak high temperature resistance for processing The cylinder section of the combustion chamber, where...

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Problems solved by technology

[0004] However, the combustor needs to be connected with the combustor head and the nozzle with the propellant injection panel when the combustor is working. In this process, it is necessary to consider the sealing of the combustor cylinder section and the outside, and the combustor will produce severe surroundings when it is working. Vibration

[0005] The current sealing scheme usually uses an O-ring or expanded graphite gasket for sealing, but the O-ring is too elastic, which is likely to cause direct contact between glass and metal and cause glass to break, while the expanded graphite gasket has a small compression and requires a lot of Large fastening force, not suitable for sealing glass and metal

These methods are difficult to simultaneously meet the shockproof and anti-leakage requirements of the cylinder section of the combustion chamber made of transparent glass materials

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