System and method for filling xenon gas

Abstract

The invention discloses a xenon gas filling system and method, which belongs to the technical field of space propulsion system propellant filling. The xenon filling system includes a xenon storage tank, an electric heater, a gas source valve, an onboard gas cylinder, a filling valve, an onboard gas cylinder weighing device, a vacuum pump, a vacuum valve, a helium valve, a helium cylinder, and a gas release valve, recovery device, recovery valve, absolute pressure gauge, purity analyzer and thermostat. The xenon storage tank is cooled through the thermostat so that the xenon in the xenon storage tank is in a gas-liquid two-phase saturated state so that it can be released under the action of gravity. Let the liquid xenon be in the lower part of the xenon gas storage tank, and the gaseous xenon be in the upper part of the xenon gas storage tank. The electric heater is installed on the top of the xenon storage tank to heat the gaseous xenon in the upper part of the xenon storage tank to increase the pressure of the xenon storage tank. By increasing the pressure of the xenon storage tank, the liquid xenon in the lower part of the xenon storage tank is squeezed to The xenon gas filling in the on-board gas cylinder is completed in one go. The above-mentioned xenon gas filling system has a simple structure and improves the filling speed and filling density.

Description

technical field [0001] The invention belongs to the technical field of propellant filling for space propulsion systems, and in particular relates to a xenon gas filling system and method, which is applicable to the filling process of all propulsion systems using high-purity xenon gas as the propellant. Background technique [0002] The electric propulsion system has a high specific impulse, which can effectively reduce the total mass of the spacecraft, increase the payload, and prolong the on-orbit life. Electric propulsion systems can be used on almost all types of spacecraft, such as orbit transfer, position keeping and de-orbit handling of geostationary communication satellites. Among them, the most commonly used working medium for electric propulsion systems is xenon gas. In the electric propulsion system, the requirements for the purity of xenon gas are very high, and the content of water and oxygen must not exceed 2ppm. Once this requirement is exceeded, it is easy to...

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Problems solved by technology

[0005] The present invention provides a xenon gas filling system and method to solve the complex system, small cyclic filling volume, slow filling speed and low filling density existing in the hot pressurized xenon filling method of the satellite electric propulsion system in the prior art The problem

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