A liquid alkali metal valve for spacecraft

Abstract

The invention discloses a liquid alkali metal valve for a spacecraft. The liquid alkali metal valve for the spacecraft comprises a motor assembly, a valve element assembly, a temperature control assembly and a valve main body. The motor comprises a motor and a support. The valve element assembly comprises a ball head and a valve rod. The valve main body comprises a valve body, a supporting plate and flexible graphite sealing rings. The temperature control assembly comprises a liquid cooling pipeline, a heating device and a temperature sensor. Welding connection pipe nozzles are welded to the left side and the right side of the valve body. The liquid cooling pipeline, the heating device and the temperature sensor are arranged on the outer wall of the valve body. The valve element assembly is installed in the valve body. The ball head and the valve rod are connected through a spherical hinge. The motor is installed on the top of the valve body through the support. The upper end of the valve rod is connected with a rotary shaft end of the motor, so that the valve rod and the ball head are controlled to move up and down, and accordingly the valve can be opened or closed. The supporting plate and the support are installed on the top of the valve body through bolts and nuts, and the two flexible graphite sealing rings are arranged between the supporting plate and the support. The liquid alkali metal valve for the spacecraft is simple in structure and capable of operating stably for a long time.

Description

technical field [0001] The invention relates to the aerospace field, in particular to a liquid alkali metal valve for spacecraft. Background technique [0002] As an easily ionizable working medium, liquid alkali metal has the characteristics of high efficiency and low energy consumption, and is very suitable as a propellant in the electric propulsion system of future space vehicles. Due to the active chemical properties of alkali metals, which are easy to react with other substances, the traditional valves in the aerospace field have no products that can adapt to alkali metals. Therefore, it is particularly important and urgent to develop a valve that can control the flow of liquid alkali metals. Contents of the invention [0003] In order to solve the above-mentioned defects in the prior art, the present invention provides a liquid alkali metal valve for spacecraft, which has a simple structure and realizes long-term stable operation of the valve. [0004] The purpose o...

AI Technical Summary

Problems solved by technology

Due to the active chemical properties of alkali metals, which are easy to react with other substances, the traditional valves in the aerospace field have no products that can adapt to alkali metals. Therefore, it is particularly important and urgent to develop a valve that can control the flow of liquid alkali metals.

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