Novel connecting structure for head and regenerative cooling body of rocket engine

Abstract

The invention discloses a novel connecting structure for a head and a regenerative cooling body of a rocket engine. The novel connecting structure for the head and the regenerative cooling body of the rocket engine comprises the head, the regenerative cooling body, a connecting ring and a filter screen. An installation groove is formed in the head in the direction of an injection panel and used for positioning a combustion chamber section of the regenerative cooling body. A first weld joint is arranged on the outer side of the head and used for welding the big end of the connecting ring through a high energy beam. A second weld joint is arranged on the outer side of the inner wall of the combustion chamber section of the regenerative cooling body and used for welding the head through the high energy beam. A third weld joint is arranged on the outer side of the outer wall of the regenerative cooling body and used for argon arc welding of the small end of the connecting ring. The filter screen is fixed to the inner side of the connecting ring in a spot welded mode through a filter framework. A plurality of unthreaded holes are evenly formed in the filter framework. According to the novel connecting structure for the head and the regenerative cooling body of the rocket engine, the number of the weld joints is small, overlapped weld joints are avoided, and the connecting structure is high in reliability; numerical-control welding can be achieved easily, and the weld penetration consistency is good; through the arrangement of the coolant filter screen, the capacity to resist redundant pollutants of the engine is improved; and in addition, the appearance quality of the engine is good, and the expansibility is high.

Description

technical field [0001] The invention relates to the technical field of spacecraft propulsion systems, in particular to a novel connection structure of a rocket engine head and a regenerative cooling body. Background technique [0002] The engine is the heart of spacecraft such as launch vehicles and satellites, providing power for the spacecraft to change its orbit and attitude. The internal combustion temperature of the engine reaches 3000°C, which is much higher than the upper limit of the engine material's service temperature, so engine cooling must be considered. For high-thrust engines, the regenerative cooling method is usually used to achieve long-term stable operation of the engine. This kind of engine is called a regenerative cooling engine. [0003] The thrust chamber of a regenerative cooling engine generally includes a head and a regenerative cooling body, usually made of metal materials such as stainless steel, nickel, copper-silver-zirconium alloy or nickel-ba...

AI Technical Summary

Problems solved by technology

[0006] 1) The structure is complex and difficult to produce and process;

[0007] 2) The welds are densely distributed, and there is a problem of secondary welding of the welds;

[0008] 3) Manual argon arc welding is mostly used, and the weld penetration is difficult to guarantee;

[0009] 4) poor appearance

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