High-pressure large-flow quick opening valve

Abstract

The invention discloses a high-pressure large-flow quick opening valve which comprises a valve body, a throttling sleeve, a main valve body, a gas insulation sleeve and a throttling rod. The valve body is provided with an upper end cap. The lower end of the valve body is provided with a gas path connector. The throttling sleeve is fixed to an inner cavity of the valve body through the upper end of the circumferential wall of the throttling sleeve. The circumferential wall of the main valve body is located in a gap between the circumferential wall of the valve body and the circumferential wall of the throttling sleeve. The gas insulation sleeve is arranged in the throttling sleeve. A control cavity is formed between the gas insulation sleeve and the upper end cap. The upper end of the throttling rod is fixedly connected with the gas insulation sleeve, and the lower end of the throttling rod penetrates through a through hole in the bottom wall of the throttling sleeve to be fixedly connected with the bottom wall of the main valve body. The valve body is provided with an annular table, a gas discharge outlet and a gas inflation inlet. The upper end cap is provided with a first connector and a second connector which communicate with the control cavity. The second connector is connected with the gas inflation inlet through an inflation pipe which is provided with a one-way throttling valve body. The high-pressure large-flow quick opening valve has the advantages of being compact in structure, convenient to use, sensitive in response, reliable in sealing and adjustable in opening speed and can provide reliable guarantee for the inflation and deflation processes of a launch canister.

Description

technical field [0001] The invention relates to a valve, in particular to a high-pressure and large-flow quick-opening valve used for compressed air launch of missiles and carrier rockets. Background technique [0002] In the field of missile and carrier rocket launch, compressed air launch technology is a cold launch method that uses compressed air to provide the power to launch missiles, and pushes the missile to fly away from the launch device at a certain speed along a certain trajectory. It has developed rapidly in recent years because of its following advantages. (1) No fire, no ablation, high safety, and no pollution to the launch tube during the ejection process; (2) No power device loading process, saving time and effort, high work efficiency, and can be repeated for multiple rapid launches, The product utilization rate is high, and the cost is low; (3) the same launching device can eject missiles of different weights by adjusting the gas pressure, and has a wide ra...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of complex structure, slow response, poor sealing, poor reliability and poor controllability of the inflation and deflation valves used in the compressed air launch technology in the prior art, the present invention provides a high-pressure and large-flow quick-opening valve, It includes a valve body, a throttle sleeve, a main valve, an air barrier sleeve and a throttle rod. The valve body is tubular and provided with an upper end cover, and the lower end of the valve body is provided with a gas path connection port; the throttle sleeve includes a surrounding wall and The bottom wall, the throttling sleeve is fixed in the inner cavity of the valve body through the upper end of the peripheral wall and a gap is provided between the peripheral wall of the throttle sleeve and the peripheral wall of the valve body, and a through hole is opened in the middle of the bottom wall of the throttle sleeve; The main valve includes a peripheral wall and a bottom wall, and the peripheral wall of the main valve is in the gap between the peripheral wall of the valve body and the peripheral wall of the throttling sleeve; A closed control cavity is formed between them; the upper end of the throttle rod is fixedly connected with the air barrier sleeve, and the lower end of the throttle rod passes through the through hole on the bottom wall of the throttle sleeve and is fixedly connected with the bottom wall of the main valve; the valve body A ring platform is provided on the inner side of the peripheral wall and located at the lower side of the bottom wall of the main valve; an air release port is provided on the peripheral wall of the valve body and at the upper side of the ring platform; An inflation port is located on the lower side of the ring platform; the upper end cover is provided with a first joint and a second joint communicating with the control chamber, the second joint is connected to the inflation port through an inflation tube, and the inflation tube is provided with a one-way throttle valve

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