A kind of preparation method of injector

Abstract

The invention relates to a preparation method of an injector, which comprises the following steps: 1) welding an oxygen separator nozzle and a methane separator nozzle by vacuum brazing to form a separator nozzle assembly; 2) connecting an oxygen main nozzle and a methane separator The main nozzle is assembled into the main nozzle assembly; 3) The midsole, the pressure tube, the panel, the compression nut, the main nozzle assembly and the baffle nozzle assembly are assembled into the midsole assembly; 4) The nozzle, pulsed The pressure measuring nozzle, the oxygen inlet elbow and the liquid oxygen top cover are assembled and welded to form the oxygen top cover assembly, and the end face of the oxygen top cover assembly and the upper end face of the midsole is processed to remove the thickness; 5) The midsole assembly, the oxygen top cover Cover assembly, load bearing cone, ignition elbow, DN6 nozzle, vibration bearing, pulsating pressure nozzle, injector protection cover, oxygen inlet protection cover, load bearing cone protection cover, blowout outlet protection cover and ignition port protection The caps combine to form the injector. The method can greatly shorten the preparation cycle, reduce the preparation difficulty, and improve the production efficiency and production quality.

Description

technical field [0001] The invention belongs to the technical field of aerospace, and in particular relates to a preparation method of an injector. Background technique [0002] The injector is an important part of the gas generator. It is used to atomize, mix and burn the propellants of rockets and aircraft engines, so as to generate high-temperature and high-pressure gas with high energy. The high-temperature and high-pressure gas is further expanded to The work drives the turbine to run at a high speed, thereby driving the turbo pump to make the engine work, providing power for the rocket or aircraft. [0003] As an important part of high temperature and high pressure components, the injector plays a very important role. Vibration support and some protective covers and other components, there will also be many problems in the process of preparing these components, such as difficult processing of ignition elbows, deformation of thin-walled panel parts, and insufficient st...

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Problems solved by technology

[0003] As an important part of high-temperature and high-pressure components, the injector plays a very important role. There are many types and quantities of its parts, mainly consisting of midsole assembly, oxygen roof assembly, bearing cone, ignition elbow, DN6 nozzle, measuring There are many problems in the process of preparing these parts, such as the difficulty in processing the ignition elbow, the deformation of the thin-walled parts of the panel, and the insufficient strength of the brazing seam during vacuum brazing. The preparation process increases the difficulty, resulting in low production efficiency, which affects the processing cycle, and the quality of the prepared injector is difficult to guarantee

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