Low-impact normally open high-pressure electric explosion valve

Abstract

The invention provides a low-impact normally open high-pressure electric explosion valve, which comprises a valve seat, a valve body, a valve, a locking spring, a locking mechanism and an electric detonator. The valve body is of a three-way structure, and one of ports is formed in the side face as an outlet; the other two remaining ports are coaxially formed, wherein one of the ports is connectedwith the valve seat as an inlet, and the other port is fixedly connected with the electric detonator; a circumferential boss matched with the valve is circumferentially arranged in the valve body; thevalve is of a cylindrical structure, a shaft shoulder is arranged on the outer circumferential face of the valve, the locking mechanism is arranged at the rear end of the valve and located on the rear side of the shaft shoulder, the valve and the circumferential boss are mounted in a matched mode, and the electrical detonator compresses the locking spring between the end face of the shaft shoulder and the end face of the circumferential boss; and the electric detonator acts on the valve, initial compression force of the locking spring is overcome, the valve moves in the axial direction of thecircumferential convex, the front end face of the valve and the end face of the valve seat make contact to achieve sealing, the electric explosion valve is closed, and meanwhile the locking mechanismcompletes locking. The low-impact normally open high-pressure electric explosion valve is simple in structure, safe and reliable in work, small in in-place impact and good in sealing performance.

Description

technical field [0001] The invention relates to the technical field of aerospace engineering, in particular to a low-impact normally open high-voltage electric explosion valve. Background technique [0002] The normally open electric explosion valve has two working states, that is, the normal open state and the closed state after receiving the valve closing signal. The general working process of the normally open electric explosion valve is: ①Open state, high-pressure gas in the pipeline system Normal circulation, the initial locking of the valve; ②Receiving the signal of closing the valve, the electric detonator ignites to generate high-temperature and high-pressure gas, and releases the initial locking of the valve; ③The valve moves; ④The valve moves in place, completes the instantaneous sealing and keeps it, and cuts off the high-pressure gas in the pipeline system circulation. [0003] According to the action form of the high-temperature and high-pressure gas generated ...

AI Technical Summary

Problems solved by technology

For the direct action normally open electric explosion valve, the high temperature and high pressure gas directly pushes the valve to move. This type of electric explosion valve has a simple structure and a very short action time. If the initial locking force is large or no cushioning measures are adopted, it may produce a large shock in place , will affect the sealing performance and the normal operation of the piping system

The indirect action normally open electric explosion valve adopts the lock pin to realize the initial locking. After the high temperature and high pressure gas generated by the electric initiator acts on the lock pin to realize the initial locking and unlocking, the valve moves under the action of the elastic element. The structure of this type of electric explosion valve is relatively complicated. The power of the valve mainly comes from the elastic element, which is much smaller than the force of high temperature and high pressure gas, thus reducing the reliability of work and sealing

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