Engine injector, manufacturing method and engine based on laminate diffusion welding
A technology of injectors and engines, which is applied in the direction of machines/engines, rocket engine devices, manufacturing tools, etc., can solve problems such as complex engine structures, and achieve good injection effects, strong versatility, and compact structure
Active Publication Date: 2021-02-09
SHANGHAI INST OF SPACE PROPULSION
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Problems solved by technology
[0005] In addition, compared with the conventional engine using dinitrogen tetroxide / hydrazine fuel combination, the engine combined with liquid oxygen and methane and other low-temperature bicomponent non-pyrophoric propellants requires a special ignition system to achieve the ignition of the engine, and the engine structure is relatively complicated
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[0064]The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.
[0065] An engine injector based on laminate diffusion welding provided according to the present invention includes a laminate 11;
[0066] N m Each of the laminates 11 is respectively provided with a set laminate channel structure unit; N m The laminates 11 are sequentially connected to each other by diffusion welding; N m The laminate flow channel structural units are connected to each other according to the set method to form the injector flow channel; where N m is an integer greater than 1.
[006...
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Abstract
The invention provides an engine injector based on laminate diffusion welding, a manufacturing method and an engine, wherein the injector comprises a laminate (11); N m Each of the laminates (11) is respectively provided with a set laminate runner structure unit; N m The laminates (11) are sequentially connected to each other by diffusion welding; N m The laminate flow channel structural units are connected to each other according to the set method to form the injector flow channel; where N m is an integer greater than 1. The laminar diffusion welding injector of the present invention can solve the problems in the prior art that there are many parts in the low temperature rail / attitude control engine injector, and the low temperature propellant is prone to phase change in the engine head, and has a compact structure at the same time , high working reliability and the advantages of uniform and fine atomization of the propellant, which can meet the requirements of low-temperature orbit / attitude control engines.
Description
technical field [0001] The invention relates to the technical field of liquid rocket engines, in particular to an engine injector based on laminate diffusion welding, a manufacturing method and an engine, and in particular to a liquid oxygen and methane engine injector based on laminate diffusion welding. Background technique [0002] High-performance, non-toxic low-temperature chemical propulsion technology has become the mainstream development direction of liquid rocket engines. Rocket engines and their propulsion systems based on the combination of liquid oxygen and methane propellants have the highest comprehensive performance (specific impulse performance, reusable performance, operation and maintenance, and long-term storage in space, etc.), and has broad application prospects in the fields of launch vehicles, space vehicles, and star surface base construction. [0003] As disclosed in patent document CN109281774A, an electric-pumped liquid oxygen methane space propuls...
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IPC IPC(8): F02K9/52B23K20/02
CPCB23K20/026F02K9/52
Inventor 程诚周海清田桂贾晴晴张志远林庆国
Owner SHANGHAI INST OF SPACE PROPULSION