Large-diameter piston switch structure of high-dynamic-pressure shock tube

Abstract

The invention belongs to the technical field of development of high-dynamic-pressure shock tubes, and provides a large-diameter piston switch structure of a high-dynamic-pressure shock tube. The large-diameter piston switch structure is provided with a plurality of single-piston switches located in the same plane; each single-piston switch is provided with a high-pressure cylinder barrel formed bysleeving an inner pipe body with an outer pipe body; the outer pipe body is fixedly connected between a high-pressure cylinder upper opening end cover and a high-pressure cylinder lower opening end cover in a sealed mode. the outer pipe body of the high-pressure cylinder barrel is connected with an air inlet barrel / air outlet barrel; the inner tube body is hermetically connected with an upper opening adapter tube connected with the shock tube driving section tube body; a piston capable of freely sliding along the inner wall of the inner pipe body is arranged in the inner pipe body; an auxiliary air pressure chamber is formed by the piston, an inner barrel body and the upper opening adapter tube; the auxiliary air pressure chamber is communicated with the air inlet barrel / air outlet barrelthrough an air inlet / air outlet through hole in the upper opening adapter tube, opening and closing of the piston can be achieved by adjusting the pressure in the auxiliary air pressure chamber, andtherefore connection or disconnection of the shock tube driving section tube body and the shock tube driven section tube body is achieved. The structure has the advantages of being rapid in piston opening, capable of being repeatedly used, high in controllability, efficient and safe.

Description

technical field [0001] The invention belongs to the technical field of high dynamic pressure shock tube development, and in particular relates to a large-diameter piston switch structure of a high dynamic pressure shock tube, which is used for simulating the shock wave environment produced by the explosion of different equivalent charges. Background technique [0002] At present, most commonly used shock tubes use a single diaphragm installed between the driving section and the driven section to separate the driving section from the driven section. , the compressed gas in the driving section expands outward, forming a preset shock wave environment in the driven section; however, it is difficult to realize a single diaphragm for a large high-pressure shock tube, and the replacement of the diaphragm when using a multi-stage multi-diaphragm structure requires a large workload and a long cycle , we must find another way. Contents of the invention [0003] In order to solve th...

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Problems solved by technology

[0002] At present, most commonly used shock tubes use a single diaphragm installed between the driving section and the driven section to separate the driving section from the driven section. , the compressed gas in the driving section expands outward, forming a preset shock wave environment in the driven section; however, it is difficult to realize a single diaphragm for a large high-pressure shock tube, and the replacement of the diaphragm when using a multi-stage multi-diaphragm structure requires a large workload and a long cycle , we must find another way

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