Liquid orbit control system propellant on-off valve

Abstract

The present application belongs to propellant filling technical field, especially to a kind of liquid attitude control system propellant filling and discharge valve, comprising: socket assembly, the socket assembly includes: valve core A, valve seat A and spring A, the inner cavity of valve seat A is connected with the outside world to the filling and discharge port of attitude control system, the valve core A is arranged in the inner cavity of valve seat A, and is connected with the spring A, the valve core A is axially moved along the valve seat A under the action of the spring A, to control the inner cavity of valve seat A and the outside world closed or connected;Plug assembly, the plug assembly is arranged on ground filling equipment, the plug assembly includes: sleeve, valve core B, valve seat B and spring B, the valve core B is connected with the sleeve;The valve seat B is arranged between the valve core B and the sleeve, spring B is arranged between the valve seat B and the sleeve, and valve core B axial movement controls the inner cavity of valve seat B and the outside world closed or connected;Connecting sleeve connects the socket assembly and the plug assembly.

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