Large-flow automatic vent valve for supercavitation aircraft

Abstract

The invention discloses a large-flow automatic vent valve for a supercavitation aircraft. The large-flow automatic vent valve comprises a valve seat, a first axial vent hole is formed in one end of the valve seat in the axial direction, and a second axial vent hole is formed in the other end of the valve seat in the axial direction. A first radial vent hole communicating with the first axial venthole and a second radial vent hole communicating with the second axial vent hole are formed in the valve seat in the radial direction, a valve sleeve sleeves the valve seat, a first annular groove anda second annular groove are formed in the valve sleeve, and the first annular groove communicates with the second annular groove. The distance between the first annular groove and the second annulargroove is smaller than the distance between the first radial vent hole and the second radial vent hole. When the supercavitation aircraft is launched, the supercavitation aircraft can be automaticallystarted by means of inertia. According to the large-flow automatic vent valve for the supercavitation aircraft, the working mode of "fixing a valve element and moving the valve sleeve" is adopted, the situation that the compression amount of an O ring is suddenly increased is avoided, and the problems of clamping stagnation, "ring cutting" and the like in the opening process can be solved; and anannular gap between the valve sleeve and the valve element is adopted as a throttling opening, and the large enough ventilation flow can be achieved.

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

Images