A large-flow automatic venting valve for supercavitation aircraft

Abstract

The present invention is a large-flow automatic ventilation valve for a supercavitation aircraft, comprising a valve seat, one end of the valve seat is provided with a first axial ventilation hole along the axial direction, the other end is provided with a second axial ventilation hole along the axial direction, and the valve seat is provided with a first axial ventilation hole along the axial direction. A first radial vent hole communicating with the first axial vent hole and a second radial vent hole communicating with the second axial vent hole are provided in the radial direction, the valve seat is sleeved with a valve sleeve, and the valve sleeve is provided with a first radial vent hole. The ring groove, the second ring groove, the first ring groove communicates with the second ring groove, and the distance between the first ring groove and the second ring groove is smaller than the distance between the first radial vent hole and the second radial vent hole. When the supercavitation vehicle is launched, it can be automatically opened by inertia. The invention adopts the working mode of "fixing the valve core and moving the valve sleeve", which avoids the sudden increase of the compression amount of the O ring, and can solve problems such as stagnation in the opening process and "ring cutting"; The annular gap acts as a throttle for a sufficiently large ventilation flow.

Description

technical field [0001] The invention belongs to the technical field of ventilation equipment for supercavitating aircraft, and in particular relates to a large-flow automatic ventilation valve for supercavitating aircraft. Background technique [0002] The supercavitation vehicle generates supercavitation by virtue of its unique hydrodynamic layout, most of the surface is wrapped in the cavitation, the navigation resistance is greatly reduced, the underwater navigation speed can exceed 200kn, and the military application prospect is broad. In order to promote the generation of supercavitation and maintain the stability of supercavitation, the supercavitation vehicle needs to inject a large amount of gas into the surrounding flow field during operation. High-temperature gas and compressed air are the two most commonly used gas sources. A supercavitating vehicle requires a ventilation system that can be opened quickly at launch and that can provide a large flow of gas. For su...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a large-flow automatic ventilation valve for a supercavitating aircraft, which solves the problem that the existing ventilation valve uses a vent hole with a small hole throttling, resulting in a small amount of ventilation, and it is difficult to achieve cavitation generated by a supercavitating aircraft. Question of required ventilation

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