Preparation method of injector

Abstract

The invention relates to a preparation method of an injector. The method comprises the following steps that 1) an oxygen partition plate nozzle and a methane partition plate nozzle are installed and welded into a partition plate nozzle assembly through vacuum brazing; 2) a main oxygen nozzle and a main methane nozzle are assembled into a main nozzle assembly; 3) a middle bottom, a pressure guide pipe, a panel, a compression nut, the main nozzle assembly and the partition plate nozzle assembly are combined into a middle bottom assembly; 4) a filler neck, a pulsating pressure measuring nozzle, an oxygen inlet elbow and a liquid oxygen top cover are installed and welded into an oxygen top cover assembly through argon arc welding, and the end face, in butt joint with the upper end face of the middle bottom, of the oxygen top cover assembly is machined to remove the thickness; and 5) the middle bottom assembly, the oxygen top cover assembly, a bearing cone, an ignition elbow, a DN6 filler neck, a vibration measuring support, a pulsating pressure connecting nozzle, an injector protection cover, an oxygen inlet protection cover, a bearing cone protection cover, a blow-out opening protection cover and an ignition opening protection cover are combined into the injector. By means of the method, the preparation period can be greatly shortened, the preparation difficulty is lowered, and the production efficiency and the production quality are improved.

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 propellant of the rocket and the aircraft engine, 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 panel thin-walled parts, and insufficie...

AI Technical Summary

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 composed 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

Images