Electromagnetic pilot pneumatic control valve for opening and closing double-active control

Abstract

The invention provides an electromagnetic pilot pneumatic control valve for opening and closing double-active control, and solves the problem of difficult meeting of quick closing deceleration requirements of an engine caused by slower closing response due to influence on a traditional engine control valve by gradual reduction of the exhaust speed and the spring loading force. The electromagneticpilot pneumatic control valve comprises a main valve, an opening secondary valve and a closing secondary valve; the main valve comprises a main valve body, a main valve element and a main valve spring; the main valve element is arranged in the main valve body to form two independent air cavities in the main valve body: an opening air cavity and a closing air cavity; the main valve spring is arranged in the closing air cavity; the main valve body is provided with a medium inlet and a medium outlet; the opening secondary valve and the closing secondary valve are both electromagnetic valves; theopening secondary valve is used for controlling inflation and deflation of the opening air cavity and providing opening force to the main valve element; and the closing secondary valve is used for controlling inflation and deflation of the closing air cavity and providing closing force to the main valve element.

Description

technical field [0001] The invention belongs to the electromagnetic control valve technology, and specifically relates to an electromagnetic pilot pneumatic control valve with dual active control for opening and closing, which can be used as a fast-response control valve for high-pressure media in liquid rocket engines, satellite on-orbit execution power systems, and ground test systems. On-off and sealing control of the medium passage. Background technique [0002] With the transformation and upgrading of aerospace equipment, the tactical and technical indicators of the power system continue to improve, and the requirements for the response performance of the engine are increasing. The high-thrust and fast-response orbital control engine technology has become a key technology that restricts the performance of equipment. Driven by the development of a certain engine, in order to improve the mobility and survivability of the equipment so that the equipment has the ability to ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the disadvantages that the existing engine control valve is affected by the gradual decrease of the exhaust velocity and the spring loading force, the closing response is relatively slow, and it is difficult to meet the requirements of the rapid shutdown and deceleration of the engine, and provides an opening valve Solenoid pilot pneumatic control valve with double active control

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