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Preparation method of gas generator

A technology for gas generators and shells, which is applied in the direction of mechanical equipment, machines/engines, jet propulsion devices, etc. It can solve problems such as inability to operate successfully and the number of small components, and achieve easy processing, meet subsequent use requirements, and reduce construction period Effect

Active Publication Date: 2021-11-19
XIAN YUANHANG VACUUM BRAZING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the small overall size of the injector part and the large number of components, various problems are prone to occur in the actual processing process, and the operation cannot be successful

Method used

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  • Preparation method of gas generator
  • Preparation method of gas generator
  • Preparation method of gas generator

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Embodiment Construction

[0040] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0041] In describing the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", The orientations or positional relationships indicated by "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying References to devices or elements must have a particular orientation, be constructed, and operate in a particular orientation and therefore should not be construed as limiting the invention.

[0042]The terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated t...

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Abstract

In the preparation method of the gas generator provided by the present invention, the preparation of the injector is realized through a step-by-step processing method, specifically: firstly, the methane nozzle shell, the oxygen nozzle shell and the oxygen nozzle top cover are welded together by vacuum brazing Together, the nozzle assembly is obtained; then the obtained nozzle assembly is welded together with the lower base plate and the central core body through vacuum brazing to obtain the intermediate assembly; finally the obtained intermediate assembly, the upper ring cover, and each nozzle are subjected to argon Weld together by arc welding to obtain an injector whose chamber sealing and strength meet the design requirements. And under the premise of reducing cost and construction period, in order to ensure that the body is easy to process, the body is divided into flange sections and straight sections, which are processed separately and then welded together by argon arc welding. Finally, the gas generator is obtained by argon arc welding the injector and the body. It can pass various tests and its various performances meet the design requirements of drawings.

Description

technical field [0001] The invention belongs to the technical field of precision machining, and in particular relates to a preparation method of a gas generator. Background technique [0002] In aerospace, gas generators provide a place for methane to react with liquid oxygen to create the gas that propels the engine. It is mainly composed of injector, body, top protection cover, outlet protection cover, vibration measurement support, nozzle and pulsation pressure measurement nozzle and other components. The main part of the injector is composed of midsole assembly, nozzle assembly, upper bottom, lower bottom, etc. It is necessary to strictly control its processing quality during the preparation process to ensure the design dimensional accuracy requirements of the product. Due to the small overall size of the injector part and the large number of components, various problems are prone to occur in the actual processing process, and the operation cannot be successful. Theref...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00F02K9/52
CPCB23P15/00F02K9/52
Inventor 周伟超刘洋琚明任军王伟
Owner XIAN YUANHANG VACUUM BRAZING TECH