Filtering device for gas regulating valve

Abstract

The invention discloses a filtering device for a gas regulating valve. The filtering device comprises a filtering shell, a filtering inner cylinder, a filtering outer cylinder and a sealing gasket. The filtering outer cylinder and the filtering inner cylinder are sealed by the sealing gasket, and the filtering inner cylinder, the filtering outer cylinder and the sealing gasket are integrally and fixedly connected with the filtering shell through threads to form the filtering device. By means of the boundary dimension and layout design of gas channels of the filtering inner cylinder and the filtering outer cylinder, the gas flow direction and the flow channel area are controlled, and effective filtering of gas is achieved. The filtering device is processed by selecting a material with the characteristics of high temperature and high pressure resistance and good heat insulation performance, so that the filtering device is reliable in structure and stable in work in a high-temperature and high-pressure environment.

Description

technical field [0001] The invention relates to a filter device. Background technique [0002] Valve devices are widely used in engine actuators due to their small size, fast response, and high reliability. In engineering applications, the working reliability of the valve device is particularly critical, which directly affects the working stability of the engine. Most gas control valves work in high temperature and high pressure environments, and control the on and off of high temperature gas according to the instructions to meet the performance requirements of the engine. The cleanliness of high temperature and high pressure gas has always been a key factor affecting the efficient and reliable operation of the gas control valve system. [0003] In the field of solid rocket motors, the cleanliness of high-temperature and high-pressure gas is mainly determined by the gas generator. The specific reason is that in order to improve the energy of the gas, the metal particles add...

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Problems solved by technology

[0003] In the field of solid rocket motors, the cleanliness of high-temperature and high-pressure gas is mainly determined by the gas generator. The specific reason is that in order to improve the energy of the gas, the metal particles added to the gas generator, the coating sleeve of the gas generator itself, and the heat insulation layer are subjected to high temperature and high pressure. The residue produced after gas erosion and ablation will be mixed into the gas as the combustion progresses, and then enter the gas control valve system, affecting the reliable operation of the valve

[0004] At present, the most fundamental measure to solve the problem of high-temperature and high-pressure gas cleaning is to realize a cleanable gas generator. However, due to the condition of the gas generator itself, an insulating layer around the gas generator is necessary. The gas generation is determined according to actual needs and the filling method of the gas generator. Whether metal particles are added to the agent and the condition of the coating sleeve, there are still key technologies to achieve self-cleaning gas generators that need to be broken through

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