CN110848565B - Xenon filling system and method - Google Patents

Xenon filling system and method Download PDF

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Publication number
CN110848565B
CN110848565B CN201911013567.1A CN201911013567A CN110848565B CN 110848565 B CN110848565 B CN 110848565B CN 201911013567 A CN201911013567 A CN 201911013567A CN 110848565 B CN110848565 B CN 110848565B
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valve
xenon
gas cylinder
filling
storage tank
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CN110848565A (en
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杨尚荣
杨宝娥
李舒欣
陈鹏飞
刘占一
陈帆
周晨初
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Xian Aerospace Propulsion Institute
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Xian Aerospace Propulsion Institute
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
    • F17C5/06—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with compressed gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/016—Noble gases (Ar, Kr, Xe)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/03—Heat exchange with the fluid
    • F17C2227/0367—Localisation of heat exchange
    • F17C2227/0369—Localisation of heat exchange in or on a vessel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/04—Methods for emptying or filling
    • F17C2227/043—Methods for emptying or filling by pressure cascade
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/04—Methods for emptying or filling
    • F17C2227/045—Methods for emptying or filling by vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/04—Methods for emptying or filling
    • F17C2227/047—Methods for emptying or filling by repeating a process cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/01—Intermediate tanks

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The invention discloses a xenon filling system and method, and belongs to the technical field of propellant filling of space propulsion systems. The xenon filling system comprises a xenon storage tank, an electric heater, an air source valve, an on-satellite gas cylinder, a filling valve, an on-satellite gas cylinder weighing device, a vacuum pump, a vacuum valve, a helium cylinder, a vent valve, a recovery device, a recovery valve, an absolute pressure gauge, a purity analyzer and a thermostat, wherein the xenon storage tank is cooled by the thermostat, so that xenon in the xenon storage tank is in a gas-liquid two-phase saturated state, liquid xenon is conveniently positioned at the lower part of the xenon storage tank under the action of gravity, and gaseous xenon is positioned at the upper part of the xenon storage tank. The electric heater is arranged at the top of the xenon storage tank and is used for heating gaseous xenon at the upper part of the xenon storage tank so as to increase the pressure of the xenon storage tank, liquid xenon at the lower part of the xenon storage tank is extruded into the satellite gas cylinder by increasing the pressure of the xenon storage tank, xenon filling is completed at one time, and the xenon filling system is simple in structure and improves filling speed and density.

Description

Xenon filling system and method
Technical Field
The invention belongs to the technical field of propellant filling of space propulsion systems, and particularly relates to a xenon filling system and method, which are suitable for the filling process of all propulsion systems adopting high-purity xenon as propellant.
Background
The electric propulsion system has higher specific impulse, can effectively reduce the total mass of the spacecraft, increase the effective load and prolong the service life of the spacecraft in orbit. Electric propulsion systems can be used on almost all types of spacecraft, such as orbit transfer, position keeping and off-orbit processing of synchronous communication satellites. Among them, the working medium most often used by electric propulsion systems is xenon. In an electric propulsion system, the requirement on the purity of xenon is very high, the requirement that the content of water and oxygen cannot exceed 2ppm is met, and once the requirement is exceeded, the cathode of the electric thruster is easily oxidized, so that the service life is damaged.
In addition, in order to reduce the volume of the on-board gas cylinder, the xenon filling density is required to be higher, such as 1660kg/m xenon filling density of American deep space first-grade detector3The xenon filling density of the Swedish SMART-1 detector is 1700kg/m3The density of ground xenon source is generally 1100kg/m3The following. Therefore, high purity and high density xenon injection in electric propulsion systems is a problem to be solved in practical applications.
In order to solve the problem of high-purity and high-density filling of xenon, the invention patent (CN104075104A) discloses a satellite electric propulsion system hot-pressurization xenon filling method, which comprises the steps of firstly introducing liquid nitrogen into a hot pressurization device, so as to reduce the temperature of a high-pressure container in the hot pressurization device, so that the pressure of xenon in the high-pressure container is reduced along with the reduction of the temperature, and when the pressure of xenon in the high-pressure container is lower than the pressure in a xenon storage tank, xenon in the xenon storage tank continuously flows into the high-pressure container under the action of pressure difference; when the xenon amount in the high-pressure container reaches a required value, stopping introducing the liquid nitrogen, starting a heating device in the thermal boosting device, and raising the temperature of the high-pressure container, so that the pressure of the xenon in the high-pressure container is raised along with the temperature rise and is higher than the pressure of the xenon in the onboard gas cylinder, and the xenon in the high-pressure container continuously flows into the onboard gas cylinder under the action of pressure difference, thereby completing the xenon filling process. The above processes are circularly carried out until the filling quantity meets the task requirement. However, the system in the satellite electric propulsion system hot pressurization xenon filling method is complex, the filling amount per cycle is small, the filling speed is slow, and the filling density is low.
Disclosure of Invention
The invention provides a xenon filling system and a xenon filling method, which aim to solve the problems of complex system, small circulating filling amount, low filling speed and low filling density in a hot pressurization xenon filling method of a satellite electric propulsion system in the prior art.
The technical solution of the invention is as follows:
a xenon gas filling system comprising: the system comprises a xenon storage tank, an electric heater, an air source valve, an on-satellite gas cylinder, a filling valve, an on-satellite gas cylinder weighing device, a vacuum pump, a vacuum valve, a helium cylinder, an air release valve, a recovery device, a recovery valve, an absolute pressure gauge, a purity analyzer and a thermostat;
the electric heater is arranged at the top of the xenon storage tank, and the xenon storage tank is connected with the on-board gas cylinder through a gas source valve and a filling valve;
the vacuum pump is connected with the onboard gas cylinder through a vacuum valve, an absolute pressure gauge, a purity analyzer and a filling valve;
the helium tank is connected with the onboard gas tank through a helium valve, an absolute pressure gauge, a purity analyzer and a filling valve;
the recovery device is connected with the onboard gas cylinder through a recovery valve, an absolute pressure gauge, a purity analyzer and a filling valve;
the onboard gas cylinder weighing device is connected to the lower part of the onboard gas cylinder;
the air release valve is connected with the onboard gas cylinder through the filling valve;
the xenon storage tank, the electric heater, the air source valve, the on-board gas cylinder, the filling valve and the on-board gas cylinder weighing device are placed in a constant temperature box.
The electric heater is arranged at the top of the xenon storage tank, so that gaseous xenon at the upper part of the xenon storage tank is heated, the pressure of the xenon storage tank is increased, liquid xenon at the lower part of the xenon storage tank is extruded into the on-satellite gas cylinder by increasing the pressure of the xenon storage tank, and filling is finished at one time.
The xenon storage tank, the electric heater, the gas source valve, the on-satellite gas cylinder, the filling valve and the on-satellite gas cylinder weighing device are placed in the constant temperature box, so that the xenon storage tank is cooled through the constant temperature box, the xenon in the xenon storage tank is in a gas-liquid two-phase saturated state, the liquid xenon is conveniently located at the lower part of the xenon storage tank under the action of gravity, and the gaseous xenon is located at the upper part of the xenon storage tank.
The system has the advantages that:
1. the electric heater is arranged at the top of the xenon storage tank, so that gaseous xenon at the upper part of the xenon storage tank is heated, the pressure of the xenon storage tank is increased, liquid xenon at the lower part of the xenon storage tank is extruded into the on-satellite gas cylinder by increasing the pressure of the xenon storage tank, and filling is finished at one time. The xenon in the xenon storage tank does not need to flow into the high-pressure container through pressure difference, then the xenon in the high-pressure container flows into the on-satellite gas cylinder through the pressure difference, and the cycle is repeated to complete the filling of the xenon.
2. The liquid xenon at the lower part of the xenon storage tank is extruded into the gas cylinder on the satellite by increasing the pressure of the xenon storage tank, so that the xenon filling system is simplified, and the filling speed and the filling density are improved.
Preferably, a xenon storage tank, a gas source valve, an on-board gas cylinder, a filling valve, a vacuum pump, a vacuum valve, a helium cylinder, a deflation valve, a recovery device, a recovery valve, an absolute pressure gauge and a purity analyzer in the xenon filling system are connected through a connecting pipeline.
The beneficial effects of the preferred scheme are: the xenon filling system is connected with a xenon storage tank, a gas source valve, an on-board gas cylinder, a filling valve, a vacuum pump, a vacuum valve, a helium cylinder, a vent valve, a recovery device, a recovery valve, an absolute pressure gauge and a purity analyzer through connecting pipelines so as to realize the vacuumizing process, helium replacement process and xenon filling process of the xenon filling system.
Preferably, the connecting pipe has a length l.
Preferably, the outlet position of the xenon storage tank is arranged below the xenon storage tank, and the outlet position is higher than the on-board gas cylinder in the vertical direction.
The beneficial effects of the preferred scheme are: the outlet position of the xenon storage tank is arranged below the xenon storage tank, and the outlet position is higher than the on-satellite gas cylinder in the vertical direction, so that the liquid xenon is extruded to the on-satellite gas cylinder by utilizing the action of gravity.
Preferably, the display indication number of the absolute pressure gauge is smaller than the minimum pressure-resistant pressure value in the xenon storage tank, the gas source valve, the on-satellite gas cylinder, the filling valve, the vacuum valve, the helium cylinder, the deflation valve, the recovery device, the recovery valve, the purity analyzer and the connecting pipeline.
The beneficial effects of the preferred scheme are: the safe operation of the xenon filling system is ensured by setting the pressure-resistant pressure value with the display indication number smaller than the minimum value.
A xenon filling method comprises the following steps:
a. the method comprises the steps that a xenon storage tank is cooled through a thermostat, when the temperature of the xenon storage tank is matched with a target filling density, the xenon storage tank is subjected to constant temperature control based on first preset time, and when the first preset time is reached, the constant temperature control of the xenon storage tank is stopped;
b. starting a vacuum pump, opening a filling valve, a vacuum valve and a recovery valve, vacuumizing a satellite gas cylinder, a recovery device and a first connecting pipeline through the vacuum pump, closing valves corresponding to the filling valve, the vacuum valve and the recovery valve when the vacuum degrees of the satellite gas cylinder, the recovery device and the first connecting pipeline all reach preset standard pressure intensity, closing the vacuum pump, and stopping vacuumizing the satellite gas cylinder, the recovery device and the first connecting pipeline;
c. opening a thermostat, and performing temperature control on a xenon storage tank, an air source valve, an on-satellite gas cylinder and a filling valve through the thermostat, when the temperatures of the xenon storage tank, the air source valve, the on-satellite gas cylinder and the filling valve are all 0 ℃, performing constant temperature control on the xenon storage tank, the air source valve, the on-satellite gas cylinder and the filling valve based on second preset time, and when the second preset time is reached, stopping performing constant temperature control on the xenon storage tank, the air source valve, the on-satellite gas cylinder and the filling valve;
d. opening a helium valve and a filling valve, filling helium gas into the on-satellite gas cylinder through a helium gas cylinder, and closing the helium valve after the displayed indication of the absolute pressure gauge is stable; analyzing whether the helium purity of the onboard gas cylinder meets a preset helium purity or not through a purity analyzer, if the helium purity of the onboard gas cylinder does not meet the preset helium purity, opening a gas release valve, and closing the gas release valve when the display indication of the absolute pressure gauge is reduced to a preset gas release pressure;
d', repeating the step d, and if the helium purity of the onboard gas cylinder meets the preset helium purity, closing the air release valve;
e. starting a vacuum pump, opening a filling valve, a vacuum valve and a recovery valve, vacuumizing a satellite gas cylinder, a recovery device and a second connecting pipeline through the vacuum pump, closing valves corresponding to the filling valve, the vacuum valve and the recovery valve when the vacuum degrees of the satellite gas cylinder, the recovery device and the second connecting pipeline reach a preset standard pressure, closing the vacuum pump, and stopping vacuumizing the satellite gas cylinder, the recovery device and the second connecting pipeline;
f. opening a filling valve, opening an air source valve according to preset opening time and interval time, when the pressure of a third connecting pipeline reaches a preset range and the display indication of an absolute pressure gauge is stable, analyzing whether the xenon purity of the onboard gas cylinder meets the preset xenon purity or not through a purity analyzer, if the xenon purity of the third connecting pipeline does not meet the preset xenon purity, opening a recovery valve, and when the display indication of the absolute pressure gauge is reduced to a preset recovery pressure, closing the recovery valve;
f', repeating the step f, and if the xenon purity of the onboard gas cylinder meets the preset xenon purity, closing a recovery valve;
g. opening an air source valve and a filling valve, heating gaseous xenon in a xenon storage tank by starting an electric heater to enable the liquid xenon in the xenon storage tank to be filled into an on-satellite gas cylinder, weighing the on-satellite gas cylinder by using an on-satellite gas cylinder weighing device, and closing the air source valve and the filling valve when the weight of the on-satellite gas cylinder reaches a preset weight;
h. and opening a recovery valve, recovering xenon in a third connecting pipeline which is connected with the air source valve, the filling valve and the recovery valve, and closing the recovery valve when the display indication of the absolute pressure gauge is reduced to the preset recovery pressure.
Preferably, the first connecting pipeline is a connecting pipeline used for connecting a vacuum pump, a filling valve, a vacuum valve, a recovery valve, an on-board gas cylinder and a recovery device;
the second connecting pipeline is used for connecting a vacuum pump, a filling valve, a vacuum valve, a recovery valve, an on-satellite gas cylinder and a recovery device;
and the third connecting pipeline is a connecting pipeline among the xenon storage tank, the gas source valve, the filling valve and the on-satellite gas cylinder.
Preferably, the preset standard pressure is a value used for judging whether the vacuum pump finishes vacuumizing the xenon filling system.
Preferably, the preset deflation pressure is a value used for judging whether the gas of the xenon filling system is completely discharged or not;
the preset recovery pressure is a value used for judging whether the gas of the xenon filling system is completely recovered or not.
Preferably, the first preset time is the time for cooling the xenon storage tank, the air source valve, the on-board gas cylinder and the filling valve by the preset thermostat for the first time;
and the second preset time refers to the time for cooling the xenon storage tank, the air source valve, the on-board gas cylinder and the filling valve for the second time by the preset constant temperature box.
The method has the beneficial effects that: firstly, cooling a xenon storage tank by a thermostat, so that xenon in the xenon storage tank is in a gas-liquid two-phase saturated state, and the liquid xenon is conveniently positioned at the lower part of the xenon storage tank and the gaseous xenon is positioned at the upper part of the xenon storage tank under the action of gravity; then the gaseous xenon at the upper part of the xenon storage tank is heated directly by an electric heater at the top of the xenon storage tank so as to increase the pressure of the xenon storage tank, and the liquid xenon at the lower part of the xenon storage tank is extruded into the gas cylinder on the satellite by increasing the pressure of the xenon storage tank, thereby completing the filling once. The xenon in the xenon storage tank does not need to flow into the high-pressure container through pressure difference, and then the xenon in the high-pressure container flows into the on-satellite gas cylinder through the pressure difference, so that the whole filling process is completed in a circulating mode, the xenon filling system is simplified, the limitation of the high-pressure container on the xenon amount is not needed, and the filling speed and the filling density are improved.
Drawings
FIG. 1 is a schematic diagram of the system composition based on the method of the present invention;
FIG. 2 is a schematic flow diagram of the process of the present invention.
In the drawings, the reference numerals denote the following components: 1. the system comprises a xenon storage tank, 2, an electric heater, 3, an air source valve, 4, an on-satellite gas cylinder, 5, a filling valve, 6, an on-satellite gas cylinder weighing device, 7, a vacuum pump, 8, a vacuum valve, 9, a helium valve, 10, a helium cylinder, 11, a vent valve, 12, a recovery device, 13, a recovery valve, 14, an absolute pressure gauge, 15, a purity analyzer, 16 and a thermostat.
Detailed Description
The invention is described in further detail below with reference to the following figures and detailed description:
as shown in fig. 1, the xenon filling system comprises a xenon storage tank 1, an electric heater 2, an air source valve 3, an onboard gas cylinder 4, a filling valve 5, an onboard gas cylinder weighing device 6, a vacuum pump 7, a vacuum valve 8, a helium valve 9, a helium cylinder 10, a gas release valve 11, a recovery device 12, a recovery valve 13, an absolute pressure gauge 14, a purity analyzer 15 and a thermostat 16;
the electric heater 2 is arranged at the top of the xenon storage tank 1, and the xenon storage tank 1 is connected with an onboard gas cylinder 4 through a gas source valve 3 and a filling valve 5;
the vacuum pump 7 is connected with the onboard gas cylinder 4 through a vacuum valve 8, an absolute pressure gauge 14, a purity analyzer 15 and a filling valve 5;
the helium bottle 10 is connected with the onboard gas bottle 4 through a helium valve 9, an absolute pressure gauge 14, a purity analyzer 15 and a filling valve 5;
the recovery device 12 is connected with the onboard gas cylinder 4 through a recovery valve 13, an absolute pressure gauge 14, a purity analyzer 15 and a filling valve 5;
the onboard gas cylinder weighing device 6 is arranged below the onboard gas cylinder 4;
the air release valve 11 is connected with the onboard gas cylinder 4 through the filling valve 5;
the xenon storage tank 1, the electric heater 2, the gas source valve 3, the onboard gas cylinder 4, the filling valve 5 and the onboard gas cylinder weighing device 6 are placed in a constant temperature box 16.
Specifically, the xenon storage tank 1, the air source valve 3, the onboard gas cylinder 4 and the filling valve 5 are cooled in advance through the thermostat 16, and when the temperature of the xenon storage tank 1 is 0 ℃, the xenon storage tank 1 is subjected to thermostatic control based on first preset time. The first preset time refers to the time for the preset thermostat 16 to cool the xenon storage tank 1, the air source valve 3, the onboard gas cylinder 4 and the filling valve 5 for the first time. The first preset time in the present embodiment is set to 4 hours, and may be set to a longer time. The first preset time is set to be 4 hours, so that the temperature of the xenon storage tank can be balanced, the pretreatment time can be shortened, and the working efficiency is improved.
Since the critical temperature of xenon is 16.6 ℃, when the temperature of the xenon storage tank 1 is 0 ℃, xenon in the xenon storage tank 1 is in a gas-liquid two-phase saturated state. The temperature can be adjusted according to the filling density, and the filling target is 1500kg/m3Therefore, 0 ℃ is chosen, and if the fill density is higher, a lower temperature may be chosen. It is understood that when xenon is in a gas-liquid two-phase saturated state, liquid xenon is in the lower portion of the xenon storage tank 1 and gaseous xenon is in the upper portion of the xenon storage tank 1 under the action of gravity. The electric heater 2 is arranged at the top of the xenon storage tank 1, so that only gaseous xenon can be heated, and liquid xenon is not heated, so that the liquid xenon at the lower part of the xenon storage tank 1 can be filled into the satellite gas cylinder by increasing the pressure of the xenon storage tank 1.
After the xenon storage tank is subjected to thermostatic control based on first preset time, starting a vacuum pump 7, opening a filling valve 5, a vacuum valve 8 and a recovery valve 13, vacuumizing the onboard gas cylinder 4, the recovery device 12 and the first connecting pipeline, closing valves corresponding to the filling valve 5, the vacuum valve 8 and the recovery valve 13 when the filling valve 5, the vacuum valve 8 and the recovery valve 13 and the vacuum degrees of the onboard gas cylinder 4, the recovery device 12 and the first connecting pipeline reach preset standard pressure, closing the vacuum pump, and stopping vacuumizing the onboard gas cylinder 4, the recovery device 12 and the first connecting pipeline. Wherein, the first connecting pipeline refers to a connecting pipeline for connecting a vacuum pump 7, a filling valve 5, a vacuum valve 8, a recovery valve 13, an onboard gas cylinder 4 and a recovery device 12. The preset standard pressure refers to a value used for judging whether the vacuum pump finishes vacuumizing the xenon filling system, the preset standard pressure can be set by a worker according to actual conditions, and the effect is better when the preset standard pressure in the embodiment is set to be 5 Pa.
And after the onboard gas cylinder 4, the recovery device 12 and the first connecting pipeline are stopped to be vacuumized, the thermostat 16 is opened, the temperature of the xenon storage tank 1, the gas source valve 3, the onboard gas cylinder 4 and the filling valve 5 is controlled, when the temperature of the xenon storage tank 1, the gas source valve 3, the onboard gas cylinder 4 and the filling valve 5 is 0 ℃, the thermostatic control is performed on the xenon storage tank 1, the gas source valve 3, the onboard gas cylinder 4 and the filling valve 5 based on second preset time, and when the second preset time is reached, the thermostatic control on the xenon storage tank 1, the gas source valve 3, the onboard gas cylinder 4 and the filling valve 5 is stopped. The second preset time refers to the time for the preset thermostat 16 to cool the xenon storage tank 1, the air source valve 3, the onboard gas cylinder 4 and the filling valve 5 for the second time. The second preset time in this embodiment is set to 0.5 hour, which can meet the cooling requirement, and can not waste time, thereby improving the working efficiency.
After the temperature control of the xenon storage tank 1, the gas source valve 3, the onboard gas cylinder 4 and the filling valve 5 is completed, the helium valve 9 and the filling valve 5 are opened, helium gas is filled into the onboard gas cylinder 4, the pressure is 0.5MPa, and the helium valve 9 is closed after the display indication of the absolute pressure gauge 14 is stable. In this embodiment, the display indication of the absolute pressure gauge is within a preset fluctuation range (for example, fluctuation is not more than ± 0.03MPa) within a preset stable time (for example, 1min), which indicates that the display indication is stable. Then, analyzing the helium purity in the connecting pipeline through a purity analyzer 15, opening the air release valve 11 when the helium purity does not meet the preset helium purity, and closing the air release valve 11 when the display indication of the absolute pressure gauge 14 is reduced to the preset air release pressure, indicating that the helium air release in the xenon filling system is finished; and if the helium purity of the onboard gas cylinder 4 meets the preset helium purity, closing the air release valve 11. The preset helium purity refers to a value for judging whether helium in the xenon filling system meets requirements or not. In this embodiment, the purity of the helium gas is set to O2≤2ppm，H2O is less than or equal to 2 ppm. The preset bleed pressure refers to a value used for judging whether the gas of the xenon filling system is completely discharged. The preset deflation pressure in this embodiment is set to 0.1 MPa.
After the air release valve 11 is closed, the vacuum pump 7 is started, the filling valve 5, the vacuum valve 8 and the recovery valve 13 are opened, the onboard gas cylinder 4, the recovery device 12 and the second connecting pipeline are vacuumized through the vacuum pump 7, when the vacuum degrees of the onboard gas cylinder 4, the recovery device 12 and the second connecting pipeline all reach the preset standard pressure (such as 5Pa), the valves corresponding to the filling valve 5, the vacuum valve 8 and the recovery valve 1 are closed, the vacuum pump 7 is closed, and the onboard gas cylinder 4, the recovery device 12 and the connecting pipeline are stopped being vacuumized. The second connecting pipeline is used for connecting the vacuum pump 7, the filling valve 5, the vacuum valve 8, the recovery valve 13, the onboard gas cylinder 4 and the recovery device 12.
When the on-board gas cylinder 4, the recovery device 12 and the second connecting pipeline are stopped from being vacuumized, the purity of xenon in the third connecting pipeline needs to be analyzed. Since the xenon storage tank 1 in this embodiment is liquid xenon when being introduced into the third connecting pipe, too much liquid xenon cannot enter the third connecting pipe, and only a small amount of liquid xenon can enter the third connecting pipe. When a small amount of liquid xenon enters the third connecting pipeline, the liquid xenon is gasified due to the pressure reduction, so that xenon can be obtained, and the purity analyzer 15 completes the analysis of the purity of the xenon in the third connecting pipeline. The specific operation process is as follows: the method comprises the following steps: opening the filling valve 5, opening the gas source valve 3 according to preset opening time (such as 0.25s) and interval time (such as 1s), filling xenon into the third connecting pipeline, when the pressure of the third connecting pipeline reaches a preset filling range and the display reading of the absolute pressure gauge 14 is stable, performing xenon purity analysis on the third connecting pipeline through the purity analyzer 15, when the xenon purity of the third connecting pipeline does not meet the preset xenon purity, opening the recovery valve 13, and when the display reading of the absolute pressure gauge 14 is reduced to the preset recovery pressure, closing the recovery valve 13. Step two: and repeating the first step, and closing the recovery valve 13 when the xenon purity of the third connecting pipeline meets the preset xenon purity. Wherein, the third connecting pipeline refers to the connecting pipeline among the xenon storage tank 1, the gas source valve 3, the filling valve 5 and the on-board gas cylinder 4. The xenon purity analysis preset pressure range refers to a numerical range of liquid xenon which is filled in the third connecting pipe and is used for xenon purity analysis. The preset pressure range for xenon purity analysis in this embodiment is set to 0.4MPa to 0.6 MPa. Wherein the preset xenon purity is used for judgmentThe purity of xenon in the xenon filling system meets the required value. The preset xenon purity set in the embodiment is O2≤2ppm，H2O is less than or equal to 2 ppm. The preset recovery pressure refers to a value used for judging whether the gas of the xenon filling system is completely recovered or not. The preset recovery pressure in this embodiment is set to 0.2 MPa.
When the xenon purity of the third connecting pipeline meets the preset xenon purity, the gas source valve 3 and the filling valve 5 are opened after the recovery valve 13 is closed, and the liquid xenon in the xenon storage tank 1 is filled into the onboard gas cylinder 4. In the process of continuously filling the liquid xenon into the on-satellite gas cylinder 4, as the pressure in the xenon storage tank 1 is continuously reduced, part of the liquid xenon is gasified in the connecting pipeline and the on-satellite gas cylinder 4, so that the pressure in the on-satellite gas cylinder 4 is increased, the pressure difference between the pressures of the xenon storage tank 1 and the on-satellite gas cylinder 4 is reduced, the filling speed is slowed down, the pressures at two ends are the same after a period of time, and the filling is stopped. At this time, the electric heater 2 needs to be turned on to heat the gaseous xenon in the xenon storage tank 1, so that the gaseous xenon in the xenon storage tank 1 is heated and expanded, the pressure is increased, and the liquid xenon at the lower part is extruded to enter the onboard gas cylinder 4 through the connecting pipeline.
In the filling process, the onboard gas cylinder 4 is weighed in real time by the onboard gas cylinder weighing device 6, when the weight of the onboard gas cylinder 4 reaches the preset weight, the liquid xenon in the onboard gas cylinder 4 reaches the requirement, and at the moment, the gas source valve 3 and the filling valve 5 are closed. And opening a recovery valve 13 to recover xenon in the xenon filling system, and closing the recovery valve 13 after the recovery is finished when the display indication of the absolute pressure gauge is reduced to the preset recovery pressure, so that the xenon filling process is finished.
The xenon storage tank 1, the electric heater 2, the gas source valve 3, the onboard gas cylinder 4, the filling valve 5 and the onboard gas cylinder weighing device 6 are placed in a thermostat, so that the temperature of the xenon storage tank 1, the electric heater 2, the gas source valve 3, the onboard gas cylinder 4, the filling valve 5 and the onboard gas cylinder weighing device 6 is controlled.
Further, as shown in fig. 1, an absolute pressure gauge 14 and a purity analyzer 15 are connected upstream of the filling valve 5, and an onboard gas cylinder weighing device 6 is placed below the onboard gas cylinder 4.
Further, as shown in fig. 1, the gas source valve 3, the filling valve 5, the vacuum valve 8, the helium valve 9, the purge valve 11 and the recovery valve 13 in this embodiment are connected to each other to ensure the smooth operation of the entire xenon filling process.
Preferably, as shown in fig. 1, a xenon storage tank 1, a gas source valve 3, an onboard gas cylinder 4, a filling valve 5, a vacuum pump 7, a vacuum valve 8, a helium valve 9, a helium cylinder 10, a vent valve 11, a recovery device 12, a recovery valve 13, an absolute pressure gauge 14 and a purity analyzer 15 in the xenon filling system are connected through connecting pipes.
Specifically, since the pressure of the xenon filling system is high, a connection pipe with high pressure bearing performance needs to be adopted, and therefore the connection pipe in this embodiment is a high-pressure metal hard pipe.
Preferably, the connecting duct has a length l.
In order to save xenon as much as possible and reduce waste, the length of the connecting pipeline in the embodiment is as short as possible, and the specific length can be determined according to actual conditions.
Specifically, the length l of the connecting pipeline for connecting the xenon storage tank 1, the gas source valve 3, the onboard gas cylinder 4, the filling valve 5, the vacuum pump 7, the vacuum valve 8, the helium valve 9, the helium cylinder 10, the vent valve 11, the recovery device 12, the recovery valve 13, the absolute pressure gauge 14 and the purity analyzer 15 is as short as possible according to the actual situation, so that the recovery amount of xenon can be effectively reduced.
Preferably, the outlet position of the xenon storage tank 1 is arranged below the xenon storage tank 1, the outlet position being vertically higher than the onboard gas cylinder 4.
Specifically, the outlet position of the xenon storage tank 1 is set below the xenon storage tank 1, and the outlet position of the xenon storage tank 1 is vertically higher than the on-board gas cylinder 4, so that the liquid xenon is discharged to the on-board gas cylinder 4 by gravity.
Preferably, the display indication number of the absolute pressure gauge 14 is smaller than the minimum pressure-resistant pressure value in the xenon storage tank 1, the gas source valve 3, the onboard gas cylinder 4, the filling valve 5, the vacuum valve 8, the helium valve 9, the helium gas cylinder 10, the deflation valve 11, the recovery device 12, the recovery valve 13, the purity analyzer 15 and the connecting pipeline.
Specifically, the safe operation of the xenon filling system is ensured by setting the minimum pressure-resistant pressure value in the display indicating number smaller than that of a xenon storage tank, a gas source valve, an on-satellite gas cylinder, a filling valve, a vacuum valve, a helium cylinder, a deflation valve, a recovery device, a recovery valve, an absolute pressure gauge, a purity analyzer and a connecting pipeline.
Further, in order to protect the safety of the xenon filling system, when the display reading reaches the safety alarm value, the alarm device of the xenon filling system is started to prompt a worker to make adjustment in time. The safety warning value in this embodiment is set to 80% of the minimum pressure withstanding value.
The invention has the beneficial effects that: firstly, the xenon storage tank 1 is cooled through the constant temperature box 16, so that xenon in the xenon storage tank 1 is in a gas-liquid two-phase saturated state, and liquid xenon is located at the lower part of the xenon storage tank and gaseous xenon is located at the upper part of the xenon storage tank under the action of gravity. And then starting a vacuum pump to vacuumize the onboard gas cylinder 4, the recovery device 12 and the first connecting pipeline, so that the vacuum degrees of the onboard gas cylinder 4, the recovery device 12 and the first connecting pipeline reach a preset standard pressure. The gaseous xenon at the upper part of the xenon storage tank is directly heated by the electric heater at the top of the xenon storage tank so as to increase the pressure of the xenon storage tank, and the liquid xenon at the lower part of the xenon storage tank is extruded into the gas cylinder on the satellite by increasing the pressure of the xenon storage tank, so that the filling is finished at one time. The xenon in the xenon storage tank does not need to flow into the high-pressure container through pressure difference, and then the xenon in the high-pressure container flows into the on-satellite gas cylinder through the pressure difference, so that the whole filling process is completed in a circulating mode, the xenon filling system is simplified, the limitation of the high-pressure container on the xenon amount is not needed, and the filling speed and the filling density are improved.
As shown in fig. 2, a xenon gas filling method includes:
a. the temperature of the xenon storage tank 1 is reduced by the constant temperature box 16, when the temperature of the xenon storage tank 1 is 0 ℃ (corresponding to the filling density of 1500kg/m in the embodiment)3) When the constant temperature control is carried out on the xenon storage tank 1 based on the first preset time, and when the first preset time is reached, the constant temperature control on the xenon storage tank 1 is stopped;
b. starting a vacuum pump 7, opening a filling valve 5, a vacuum valve 8 and a recovery valve 13, vacuumizing the onboard gas cylinder 4, the recovery device 12 and the first connecting pipeline through the vacuum pump 7, closing valves corresponding to the filling valve 5, the vacuum valve 8 and the recovery valve 13 when the vacuum degrees of the onboard gas cylinder 4, the recovery device 12 and the first connecting pipeline all reach preset standard pressure intensity, closing the vacuum pump 7, and stopping vacuumizing the onboard gas cylinder 4, the recovery device 12 and the first connecting pipeline;
c. opening the constant temperature box 16, performing temperature control on the xenon storage tank 1, the air source valve 3, the onboard gas cylinder 4 and the filling valve 5 through the constant temperature box 16, performing constant temperature control on the xenon storage tank 1, the air source valve 3, the onboard gas cylinder 4 and the filling valve 5 based on second preset time when the temperature of the xenon storage tank 1, the air source valve 3, the onboard gas cylinder 4 and the filling valve 5 is 0 ℃, and stopping the constant temperature control on the xenon storage tank 1, the air source valve 3, the onboard gas cylinder 4 and the filling valve 5 when the second preset time is reached;
d. opening a helium valve 9 and a filling valve 5, filling helium gas into the onboard gas cylinder 4 through a helium gas cylinder 10, and closing the helium valve 9 after the display indication of an absolute pressure gauge 14 is stable; analyzing whether the helium purity of the onboard gas cylinder 4 meets the preset helium purity or not through a purity analyzer 15, if the helium purity of the onboard gas cylinder 4 does not meet the preset helium purity, opening the air release valve 11, and closing the air release valve 11 when the display indication of the absolute pressure gauge 14 is reduced to the preset air release pressure;
d', repeating the step d, and if the helium purity of the onboard gas cylinder 4 meets the preset helium purity, closing the vent valve 11;
e. starting a vacuum pump 7, opening a filling valve 5, a vacuum valve 8 and a recovery valve 13, vacuumizing the onboard gas cylinder 4, the recovery device 12 and the second connecting pipeline through the vacuum pump 7, closing valves corresponding to the filling valve 5, the vacuum valve 8 and the recovery valve 13 when the vacuum degrees of the onboard gas cylinder 4, the recovery device 12 and the second connecting pipeline all reach preset standard pressure intensity, closing the vacuum pump 7, and stopping vacuumizing the onboard gas cylinder 4, the recovery device 12 and the second connecting pipeline;
f. opening the filling valve 5, opening the gas source valve 3 according to preset opening time and interval time, when the pressure of the third connecting pipeline reaches a xenon purity analysis preset pressure range, and the display indication of the absolute pressure gauge 14 is stable, analyzing whether the xenon purity of the onboard gas cylinder 4 meets the preset xenon purity or not by using the purity analyzer 15, if the xenon purity of the third connecting pipeline does not meet the preset xenon purity, opening the recovery valve 13, and when the display indication of the absolute pressure gauge 14 is reduced to the preset recovery pressure, closing the recovery valve 13;
f', repeating the step f, and if the xenon purity of the onboard gas cylinder 4 meets the preset xenon purity, closing the recovery valve 13;
g. opening an air source valve 3 and a filling valve 5, heating gaseous xenon in a xenon storage tank 1 by starting an electric heater 2, so that liquid xenon in the xenon storage tank 1 is filled into an onboard gas cylinder 4, weighing the onboard gas cylinder 4 by an onboard gas cylinder weighing device 6, and closing the air source valve 3 and the filling valve 5 when the weight of the onboard gas cylinder 4 reaches a preset weight;
h. and (3) opening a recovery valve 13, recovering xenon in a third connecting pipeline connecting the air source valve 3, the filling valve 5 and the recovery valve 13, and closing the recovery valve 13 when the display indication of the absolute pressure gauge 14 is reduced to a preset recovery pressure.
Preferably, the first connecting pipeline is a connecting pipeline for connecting the vacuum pump 7, the filling valve 5, the vacuum valve 8, the recovery valve 13, the onboard gas cylinder 4 and the recovery device 12;
the second connecting pipeline is used for connecting the vacuum pump 7, the filling valve 5, the vacuum valve 8, the recovery valve 13, the onboard gas cylinder 4 and the recovery device 12;
the third connecting pipeline is a connecting pipeline among the xenon storage tank 1, the gas source valve 3, the filling valve 5 and the on-board gas bottle 4.
Preferably, the preset standard pressure is a value used for judging whether the vacuum pump finishes vacuumizing the xenon filling system.
Preferably, the preset deflation pressure is a value used for judging whether the gas of the xenon filling system is completely discharged or not;
the preset recovery pressure is a value used for judging whether the gas of the xenon filling system is completely recovered or not.
Preferably, the first preset time is the time for the preset thermostat 16 to cool the xenon storage tank 1, the air source valve 3, the onboard gas cylinder 4 and the filling valve 5 for the first time;
the second preset time refers to the preset time for the thermostat 16 to cool the xenon storage tank 1, the air source valve 3, the onboard gas cylinder 4 and the filling valve 5 for the second time.
Those skilled in the art will appreciate that those matters not described in detail in the present specification are well known in the art.

Claims (5)

1. A xenon gas filling method is characterized by comprising the following steps:
a. the method comprises the steps that a xenon storage tank (1), an air source valve (3), a satellite gas cylinder (4) and a filling valve (5) are cooled through a thermostat (16), when the temperature of the xenon storage tank (1) is matched with a target filling density, the xenon storage tank (1) is subjected to constant temperature control based on first preset time, and when the first preset time is reached, the constant temperature control of the xenon storage tank (1) is stopped;
b. starting a vacuum pump (7), opening a filling valve (5), a vacuum valve (8) and a recovery valve (13), vacuumizing an onboard gas cylinder (4), a recovery device (12) and a first connecting pipeline through the vacuum pump (7), closing valves corresponding to the filling valve (5), the vacuum valve (8) and the recovery valve (13) when the vacuum degrees of the onboard gas cylinder (4), the recovery device (12) and the first connecting pipeline reach preset standard pressure, closing the vacuum pump (7), and stopping vacuumizing the onboard gas cylinder (4), the recovery device (12) and the first connecting pipeline;
c. opening a constant temperature box (16), and performing temperature control on a xenon storage tank (1), an air source valve (3), an onboard gas cylinder (4) and a filling valve (5) through the constant temperature box (16), when the temperatures of the xenon storage tank (1), the air source valve (3), the onboard gas cylinder (4) and the filling valve (5) are all 0 ℃, performing constant temperature control on the xenon storage tank (1), the air source valve (3), the onboard gas cylinder (4) and the filling valve (5) based on a second preset time, and when the second preset time is reached, stopping performing constant temperature control on the xenon storage tank (1), the air source valve (3), the onboard gas cylinder (4) and the filling valve (5);
d. opening a helium valve (9) and a filling valve (5), filling helium gas into the onboard gas cylinder (4) through a helium gas cylinder (10), and closing the helium valve (9) after the display indication of an absolute pressure gauge (14) is stable; analyzing whether the helium purity of the onboard gas cylinder (4) meets a preset helium purity or not through a purity analyzer (15), if the helium purity of the onboard gas cylinder (4) does not meet the preset helium purity, opening a gas release valve (11), and closing the gas release valve (11) when the display value of the absolute pressure gauge (14) is reduced to a preset gas release pressure;
d', repeating the step d, and if the helium purity of the onboard gas cylinder (4) meets the preset helium purity, closing the vent valve (11);
e. starting a vacuum pump (7), opening a filling valve (5), a vacuum valve (8) and a recovery valve (13), vacuumizing an onboard gas cylinder (4), a recovery device (12) and a second connecting pipeline through the vacuum pump (7), closing valves corresponding to the filling valve (5), the vacuum valve (8) and the recovery valve (13) when the vacuum degrees of the onboard gas cylinder (4), the recovery device (12) and the second connecting pipeline reach preset standard pressure, closing the vacuum pump (7), and stopping vacuumizing the onboard gas cylinder (4), the recovery device (12) and the second connecting pipeline;
f. opening a filling valve (5), opening an air source valve (3) according to preset opening time and interval time, when the pressure of a third connecting pipeline reaches a preset range and the display reading of an absolute pressure gauge (14) is stable, analyzing whether the xenon purity of the onboard gas cylinder (4) meets the preset xenon purity or not through a purity analyzer (15), if the xenon purity of the third connecting pipeline does not meet the preset xenon purity, opening a recovery valve (13), and when the display reading of the absolute pressure gauge (14) is reduced to the preset recovery pressure, closing the recovery valve (13);
f', repeating the step f, and if the xenon purity of the onboard gas cylinder (4) meets the preset xenon purity, closing a recovery valve (13);
g. opening an air source valve (3) and a filling valve (5), heating gaseous xenon in a xenon storage tank (1) by starting an electric heater (2), so that the liquid xenon in the xenon storage tank (1) is filled into an onboard gas cylinder (4), weighing the onboard gas cylinder (4) by an onboard gas cylinder weighing device (6), and closing the air source valve (3) and the filling valve (5) when the weight of the onboard gas cylinder (4) reaches a preset weight;
h. opening a recovery valve (13), recovering xenon in a third connecting pipeline which is connected with the air source valve (3), the filling valve (5) and the recovery valve (13), and closing the recovery valve (13) when the display indication of the absolute pressure gauge (14) is reduced to the preset recovery pressure;
the xenon filling system required by the xenon filling method comprises a xenon storage tank (1), an electric heater (2), an air source valve (3), an on-satellite gas cylinder (4), a filling valve (5), an on-satellite gas cylinder weighing device (6), a vacuum pump (7), a vacuum valve (8), a helium valve (9), a helium cylinder (10), an air release valve (11), a recovery device (12), a recovery valve (13), an absolute pressure gauge (14), a purity analyzer (15) and a thermostat (16);
the electric heater (2) is arranged at the top of the xenon storage tank (1), and the xenon storage tank (1) is connected with the on-board gas cylinder (4) through the gas source valve (3) and the filling valve (5);
the vacuum pump (7) is connected with the onboard gas cylinder (4) through a vacuum valve (8), an absolute pressure gauge (14), a purity analyzer (15) and a filling valve (5);
the helium bottle (10) is connected with the onboard gas bottle (4) through a helium valve (9), an absolute pressure gauge (14), a purity analyzer (15) and a filling valve (5);
the recovery device (12) is connected with the onboard gas cylinder (4) through a recovery valve (13), an absolute pressure gauge (14), a purity analyzer (15) and a filling valve (5);
the onboard gas cylinder weighing device (6) is arranged below the onboard gas cylinder (4);
the air release valve (11) is connected with the onboard gas cylinder (4) through the filling valve (5);
the xenon storage tank (1), the electric heater (2), the air source valve (3), the on-board gas cylinder (4), the filling valve (5) and the on-board gas cylinder weighing device (6) are arranged in a constant temperature box (16);
a xenon storage tank (1), a gas source valve (3), an on-satellite gas cylinder (4), a filling valve (5), a vacuum pump (7), a vacuum valve (8), a helium valve (9), a helium cylinder (10), a vent valve (11), a recovery device (12), a recovery valve (13), an absolute pressure gauge (14) and a purity analyzer (15) in the xenon filling system are connected through a connecting pipeline;
the length of the connecting pipeline is l;
the outlet position of the xenon storage tank (1) is arranged below the xenon storage tank (1), and the outlet position is higher than the on-board gas cylinder (4) in the vertical direction;
the display indication number of the absolute pressure gauge (14) is smaller than the minimum pressure-resistant pressure value in the xenon storage tank (1), the gas source valve (3), the on-satellite gas cylinder (4), the filling valve (5), the vacuum valve (8), the helium valve (9), the helium cylinder (10), the deflation valve (11), the recovery device (12), the recovery valve (13), the purity analyzer (15) and the connecting pipeline.
2. The xenon filling method according to claim 1, wherein the first connecting pipeline is a connecting pipeline for connecting a vacuum pump (7), a filling valve (5), a vacuum valve (8), a recovery valve (13), an onboard gas cylinder (4) and a recovery device (12);
the second connecting pipeline is used for connecting a vacuum pump (7), a filling valve (5), a vacuum valve (8), a recovery valve (13), an onboard gas cylinder (4) and a recovery device (12);
and the third connecting pipeline is a connecting pipeline among the xenon storage tank (1), the gas source valve (3), the filling valve (5) and the on-board gas cylinder (4).
3. The xenon filling method according to claim 1, wherein the predetermined standard pressure is a value for determining whether the vacuum pump completes evacuation of the xenon filling system.
4. The xenon filling method according to claim 1, wherein the preset deflation pressure is a value for determining whether the gas of the xenon filling system is completely discharged;
the preset recovery pressure is a value used for judging whether the gas of the xenon filling system is completely recovered or not.
5. The xenon filling method according to claim 1, wherein the first preset time is a time for a preset thermostat (16) to cool down the xenon storage tank (1), the gas source valve (3), the on-board gas cylinder (4) and the filling valve (5) for the first time;
the second preset time refers to the time for cooling the xenon storage tank (1), the air source valve (3), the onboard gas cylinder (4) and the filling valve (5) for the second time by the preset thermostat (16).
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