Spaceflight electric propulsion krypton-xenon medium rapid filling system

Abstract

The utility model discloses a kind of aerospace electric propulsion krypton xenon medium rapid filling system, it is related to aerospace power system technical field, including gas source bottle group, for providing working medium gas;Membrane press, its import is connected with the gas source bottle group through pipeline, for working medium gas is pressurized;Cooler, connect on the export pipeline of the membrane press, for working medium gas after pressurization is cooled;Purifier, its import is connected with the export of cooler, for purifying working medium gas;Star gas bottle group, through filling pipeline and filling valve and the export of purifier are connected;And working medium recovery system, through recovery pipeline and recovery valve respectively with the membrane press, purifier and star gas bottle group are connected.For the deficiency of prior art, the utility model provides a kind of filling rate fast, temperature rise control accurate, high safety and can be compatible with krypton and xenon's aerospace electric propulsion working medium rapid filling system.

Description

Technical Field

[0001] This utility model relates to the field of aerospace propulsion system technology, specifically to a rapid refueling system for aerospace electric propulsion krypton-xenon media. Background Technology

[0002] Aerospace electric propulsion technology uses xenon and krypton as propellants. Currently, the mainstream refueling method is thermal pressurization, which utilizes liquid nitrogen for a cooling-heating cycle to collect and refuel the working fluid. This method suffers from low refueling efficiency, high liquid nitrogen consumption, high operational safety risks, and is difficult to apply to krypton refueling, which requires higher filling pressures. Therefore, there is an urgent need for a highly efficient, safe refueling system that can be used with both krypton and xenon. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides a rapid refueling system for aerospace electric propulsion propellants that features fast refueling rate, precise temperature rise control, high safety, and compatibility with both krypton and xenon.

[0004] To solve the above problems, the technical solution provided by this utility model is as follows:

[0005] A rapid refueling system for krypton-xenon media in aerospace electric propulsion includes a gas source cylinder group for providing working gas; a membrane compressor, the inlet of which is connected to the gas source cylinder group via a pipeline for pressurizing the working gas; a cooler connected to the outlet pipeline of the membrane compressor for cooling the pressurized working gas; a purifier, the inlet of which is connected to the outlet of the cooler for purifying the working gas; an on-board gas cylinder group connected to the outlet of the purifier via a refueling pipeline and a refueling valve; and a working gas recovery system connected to the membrane compressor, the purifier, and the on-board gas cylinder group via a recovery pipeline and a recovery valve.

[0006] A mechanical pressurization process centered on a "membrane press" was established, replacing the "thermal pressurization" process in the background technology, and a basic workflow of "pressurization-cooling-purification-filling" was constructed. At the same time, a "working fluid recovery system" was introduced as a support module to solve the key technical problem of working fluid loss.

[0007] Optionally, the gas source cylinder group is mounted on the gas source weighing device.

[0008] Monitoring methods for the gas source cylinder group have been added. Its function is to achieve real-time and accurate measurement of the working fluid consumption during the filling process.

[0009] Alternatively, the membrane press is a diaphragm compressor with an outlet pressure ranging from 0.5 MPa to 30 MPa.

[0010] The specific type and key performance parameters of the core component, the "diaphragm compressor," are defined. Specifying "diaphragm compressor" ensures complete isolation of the working gas from the lubricating oil during compression, preventing contamination and guaranteeing gas purity. Limiting the pressure range clarifies the capabilities of this invention, particularly covering the high pressures required for krypton refueling (e.g., 30 MPa).

[0011] Alternatively, the cooler may be a heat exchanger that uses chilled water as the cooling medium.

[0012] The specific cooling method of the cooler is defined. Its function is to provide a safe, controllable, and economical cooling method to replace the dangerous and energy-intensive liquid nitrogen cooling in the prior art.

[0013] Optionally, the purifier is filled with an adsorbent for adsorbing water and oxygen.

[0014] The core purification mechanism of the purifier has been clarified. Its function is to actively remove key harmful impurities (water and oxygen) from the gas to ensure that the extremely high purity standards required for aerospace propellants are met (such as water and oxygen content ≤1ppm).

[0015] Optionally, the on-board gas cylinder group consists of multiple on-board gas cylinders connected in parallel, each on-board gas cylinder has an independent control valve on its inlet pipe, and the on-board gas cylinder group is mounted on an on-board gas cylinder weighing device.

[0016] The structure and monitoring of the refueling target (onboard gas cylinder group) were defined. Its function is to enable batch, sequential, or selective refueling and to precisely control the final refueling volume of each gas cylinder.

[0017] Optionally, the working fluid recovery system includes a recovery gas cylinder group, which is connected to the outlet of the purifier and the filling pipeline of the onboard gas cylinder group through the recovery valve and the recovery pipeline.

[0018] The core components and connection nodes of the working fluid recovery system are further defined. Its function is to construct a centralized and efficient recovery path to maximize the recovery of high-value working fluid gases.

[0019] Optionally, a vacuum system is also included, which includes a vacuum pump connected to the refueling pipeline of the on-board gas cylinder group via a vacuum valve.

[0020] An important pretreatment module has been added. Its function is to remove air and moisture from the system before filling, creating a clean environment for high-purity filling.

[0021] Optionally, a purging system is also included, which includes a purging gas cylinder and an electric heater. The purging gas cylinder is connected to the pipeline between the gas source cylinder group and the membrane press via a purging valve and the electric heater.

[0022] Another important pretreatment module has been added. Its function is to further replace and purify the system piping with an inert purging gas (such as helium) to ensure the ultra-high purity of the filling environment.

[0023] Optionally, an automatic control system is also included, which is connected to all automatic valves in the system, the membrane press, each weighing device, and pressure, temperature, and purity analyzers installed on the pipeline, for the purpose of realizing automatic control of the filling process.

[0024] This gives the entire system an "intelligent" core. Its function is to integrate and automate all the above-mentioned operation processes, achieving high precision, high reliability, and high efficiency in the filling process, while reducing human intervention and errors.

[0025] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0026] By using a membrane press for mechanical pressurization, the filling rate is significantly improved, enabling continuous filling and solving the problem of low efficiency in the thermal pressurization method.

[0027] By integrating a cooler and automated control, the temperature and flow rate of the injected gas can be precisely controlled, effectively suppressing the temperature rise of the gas cylinders on the satellite.

[0028] The system does not rely on liquid nitrogen, eliminating the corresponding safety risks and making it possible to refuel with high-pressure krypton.

[0029] The built-in purifier and recovery system ensure the high purity of the working gas and reduce consumption costs. Attached Figure Description

[0030] Figure 1 A schematic diagram of a rapid refueling system for aerospace electric propulsion krypton-xenon media, as proposed in an embodiment of this utility model;

[0031] 1. Electronic scale for weighing gas source cylinders; 2. Gas cylinder assembly for filling; 3. Main gas source valve; 4. Buffer tank; 5. Filling diaphragm press; 6. Diaphragm press heat exchanger; 7. Purifier; 8. Main filling valve; 9. Gas inlet valve for the first star-mounted cylinder; 10. Gas inlet valve for the second star-mounted cylinder; 11. Gas inlet valve for the third star-mounted cylinder; 12. Gas inlet valve for the fourth star-mounted cylinder; 13. Gas inlet valve for the fifth star-mounted cylinder; 14. Gas inlet valve for the sixth star-mounted cylinder; 15. First 16. Onboard gas cylinder; 17. Second onboard gas cylinder; 18. Third onboard gas cylinder; 19. Fourth onboard gas cylinder; 20. Fifth onboard gas cylinder; 21. Sixth onboard gas cylinder; 22. Onboard gas cylinder weighing scale; 23. First analysis valve; 24. Second analysis valve; 25. Third analysis valve; 26. Second working fluid recovery valve; 27. Vent valve; 28. Vacuum valve; 29. ​​Vacuum pump; 30. Reflux valve; 31. First working fluid recovery valve; 1. Recovery gas cylinder assembly; 32. Fourth analysis valve; 33. Fifth analysis valve; 34. Sixth analysis valve; 35. Purge gas cylinder; 36. Purge gas valve; 37. Electric heater; 38. Sampling gas cylinder; 39. Trace water analyzer; 40. Trace oxygen analyzer; 41. Krypton and xenon analyzer; 42. Gas source pipeline; 43. Main inlet pipeline; 44. Membrane press inlet pipeline; 45. Membrane press outlet pipeline; 46. Heat exchanger outlet pipe 47. Reflux line; 48. Purifier outlet line; 49. Second recovery line; 50. Onboard gas cylinder refueling main line; 51. First analysis line; 52. Vacuum line; 53. Purge gas inlet line; 54. Recovery gas cylinder main valve; 55. Vent line; 56. First recovery line; 57. Second analysis line; 58. First flow meter; 59. Second flow meter; 60. Third flow meter; 61. Pressure gauge. Detailed Implementation

[0032] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments.

[0033] Example

[0034] Combined with appendix Figure 1 A rapid refueling system for krypton-xenon media in aerospace electric propulsion includes a gas source cylinder group for providing working gas; a membrane compressor, the inlet of which is connected to the gas source cylinder group via a pipeline for pressurizing the working gas; a cooler connected to the outlet pipeline of the membrane compressor for cooling the pressurized working gas; a purifier 7, the inlet of which is connected to the outlet of the cooler for purifying the working gas; an on-board gas cylinder group connected to the outlet of the purifier 7 via a refueling pipeline and a refueling valve; and a working gas recovery system connected to the membrane compressor, the purifier 7, and the on-board gas cylinder group via a recovery pipeline and a recovery valve.

[0035] During system operation, the working gas flows out from the gas source cylinder group and is compressed by the membrane compressor, resulting in a simultaneous increase in pressure and temperature. The high-temperature, high-pressure gas flows through the cooler, where its temperature is reduced to a safe range to avoid thermal shock to downstream equipment and onboard gas cylinders. Subsequently, the gas enters the purifier 7, where impurities such as moisture and oxygen are adsorbed, ensuring the ultra-high purity of the gas being added. Finally, the clean, low-temperature, high-pressure gas is injected into the onboard gas cylinders through the filling valve. When it is necessary to stop filling or empty the system, the recovery system is activated to recover the residual working gas distributed in the membrane compressor, purifier 7, and filling pipelines to the recovery cylinder group 31, reducing waste.

[0036] The gas cylinder assembly is mounted on a gas source weighing device. This device (such as a high-precision electronic scale) continuously measures the overall mass of the gas cylinder assembly. By calculating the difference in mass before and after refueling, or during the refueling process, the system can accurately determine the mass of the refueled working fluid. This data is cross-checked with the weighing data of the onboard gas cylinders, together forming a closed-loop control basis for the refueling quantity, ensuring refueling accuracy.

[0037] The diaphragm compressor is a type of diaphragm compressor with an outlet pressure range of 0.5 MPa to 30 MPa. The diaphragm compressor compresses gas through the reciprocating motion of a metal diaphragm, which completely separates the gas from the hydraulic oil. Its outlet pressure range of 0.5-30 MPa allows it to meet both the conventional pressure requirements for xenon refueling and the high-pressure requirements for krypton refueling, demonstrating the system's compatibility.

[0038] The cooler is a heat exchanger that uses chilled water as the cooling medium. The chilled water circulates within the heat exchanger, exchanging heat with the high-temperature gas exiting the membrane press. By adjusting the temperature and flow rate of the chilled water, the outlet temperature of the cooled gas can be precisely controlled (e.g., reduced to 5-25°C), effectively solving the temperature rise problem during the filling process, while avoiding the low-temperature risks and costs associated with using liquid nitrogen.

[0039] Purifier 7 is filled with an adsorbent for adsorbing water and oxygen. The interior of purifier 7 is also filled with high-performance adsorbent materials (such as molecular sieves). When gas flows through the adsorbent bed, water and oxygen molecules are selectively adsorbed and retained within purifier 7, thereby significantly improving the purity of the gas exiting purifier 7.

[0040] The onboard gas cylinder group consists of multiple onboard gas cylinders connected in parallel. Each onboard gas cylinder has an independent control valve on its inlet pipe, and the entire onboard gas cylinder group is mounted on an onboard gas cylinder weighing device. The parallel design of multiple onboard gas cylinders allows the system to fill multiple cylinders sequentially or as needed, greatly improving efficiency. The independent valve at the inlet of each cylinder enables precise control of the filling target. The onboard gas cylinder weighing device provides the most direct determination of the filling endpoint; when the cylinder weight reaches a preset value, the corresponding valve is closed, ensuring high accuracy in the filling volume.

[0041] The working fluid recovery system includes a recovery gas cylinder group 31, which is connected to the outlet of the purifier 7 and the filling pipeline of the onboard gas cylinder group via recovery valves and recovery pipelines. When filling is completed, during system maintenance, or in case of an anomaly, the corresponding recovery valve is opened. The remaining working fluid gas in the system (located after the purifier 7, in the filling pipeline, and in the onboard gas cylinders) is transported to the low-pressure recovery gas cylinder group 31 for storage under pressure differential or external power (such as a recovery pump, though not explicitly stated, it may be implied), for future use, thereby reducing waste costs.

[0042] The system also includes a vacuum system, which comprises a vacuum pump 28 connected to the onboard gas cylinder assembly's refueling line via a vacuum valve 27. Before refueling begins, the vacuum pump 28 is started and the vacuum valve 27 is opened to evacuate the entire system space from the refueling line to the onboard gas cylinders. When the vacuum level reaches an extremely high requirement (e.g., <2 Pa), it indicates that air and moisture in the system have been effectively removed, and only then can the working gas be introduced to prevent contamination.

[0043] The system also includes a purging system, comprising a purging gas cylinder 35 and an electric heater 37. The purging gas cylinder 35 is connected to the pipeline between the gas source cylinder group and the membrane press via a purging valve and the electric heater 37. After vacuuming, purging gas is introduced into the system. The electric heater 37 heats the purging gas to achieve a lower dew point, enabling it to more effectively remove residual moisture from the system's inner walls. Through a cyclical operation of "purging-pressurizing-discharging," combined with purity instrument monitoring, the system continues until the background gas purity meets the standard, thus preparing for the final refueling of the working fluid.

[0044] The system also includes an automatic control system, which is connected to all automatic valves, diaphragm presses, weighing devices, and pressure, temperature, and purity analyzers installed on the pipelines to achieve automatic control of the filling process. The automatic control system (such as a PLC or industrial computer) acts as the brain, collecting data from various sensors (weighing, pressure, temperature, and purity analyzers) in real time. Based on preset programs and logic, it automatically issues commands to control the opening and closing of valves, the start and stop of the diaphragm press, and the adjustment of the cooling system and heaters. For example, it can automatically adjust the opening of the filling valve or the speed of the diaphragm press based on the real-time weight and temperature of the gas cylinders on board, ensuring that the filling process is both fast and safe, ultimately achieving "one-button" fully automatic filling.

[0045] All valves are automatic valves and their opening and closing can be controlled by the control system.

[0046] The gas source cylinder is placed on an electronic scale for weighing and connected to the membrane compressor and electric heater 37 via the gas source valve at the top outlet. The purge gas cylinder 35 is connected to the electric heater 37 via a purge gas valve. The outlet line of the membrane compressor is connected to the purifier 7, and the membrane compressor is also connected to the onboard gas cylinder via a recovery line. The purifier 7 is connected to the recovery gas cylinder and the onboard gas cylinder via a recovery valve and a filling valve, respectively, for adsorbing water and oxygen from the gas. The recovery gas cylinder is connected to the purifier 7 and the onboard gas cylinder via a recovery valve and a filling valve, for recovering krypton and xenon from the membrane compressor, purifier 7, and the onboard gas cylinder. The first purity detection point is connected... Upstream of the onboard gas cylinders, a second detection point is used for water and oxygen content detection and sampling during the refueling process. This second detection point is connected above the refueling valve of the end onboard gas cylinder and is used for water and oxygen content detection, as well as krypton and xenon purity detection. The water and oxygen detection at the two detection points are switched using the same trace water and oxygen analyzer. The vacuum pump 28 is connected to the onboard gas cylinders, purifier 7, and recovery gas cylinders via vacuum valve 27, refueling valve, and recovery valve to evacuate the system. The vent valve 26 is connected to the end of the refueling pipeline to release the gas in the system. The onboard gas cylinders are weighed using an onboard gas cylinder weighing scale 21.

[0047] The rapid refueling method for krypton and xenon working propellants in aerospace electric propulsion includes the following steps:

[0048] a. Connect the injection test system;

[0049] b. Perform self-testing on each module and component, and check for leaks by adding negative pressure to the system until it passes the test;

[0050] c. Start vacuum pump 28, open filling valve, vacuum valve 27, and recovery valve to perform vacuuming on membrane press system, on-board gas cylinder, purifier 7, and recovery gas cylinder. Stop vacuuming when the vacuum degree is less than 2Pa.

[0051] d. Open the helium valve, filling valve, and electric heater 37. Purge and replace the entire gas system to 0.5 MPa and then vent it. Monitor and record the data in real time using the trace water and oxygen analyzer.

[0052] e. Repeat steps c and d multiple times until both water and oxygen levels in the entire system are within acceptable limits;

[0053] f. When the entire system is evacuated to a vacuum level of less than 2Pa, open the gas source valve and the filling valve, start the membrane compressor and purifier 7, and inject krypton or xenon into the on-board gas cylinder at the specified flow rate. Record the weight using the on-board gas cylinder weighing scale 21.

[0054] g. Use a trace water and oxygen analyzer and a krypton and xenon purity analyzer to sample and analyze the gas in the on-board gas cylinders. If the gas is not up to standard, it should be completely recycled and replaced.

[0055] h. The onboard gas cylinder or thruster module is disconnected from the refueling system, and the refueling volume is recalculated.

[0056] The gas cylinder group 2 is placed on the gas source weighing scale 1 for weighing. It is connected to the buffer tank 4 and the electric heater 37 through the gas source main valve 3 at the top outlet. The outlet pipeline of the filling membrane press 5 is connected to the membrane press heat exchanger 6. The outlet pipeline of the membrane press heat exchanger 6 is divided into two lines, one connected to the buffer tank 4 and the other connected to the purifier 7. The purifier 7 is used to adsorb water and oxygen in the gas. The outlet pipeline of the purifier 7 is connected to the first star gas cylinder 15, the second star gas cylinder 16, the third star gas cylinder 17, the fourth star gas cylinder 18, the fifth star gas cylinder 19, and the sixth star gas cylinder 20 through the filling main valve 8. The star gas cylinders are weighed by the star gas cylinder weighing scale 21.

[0057] The gas in the purge gas cylinder 35 is krypton. The electric heater 37 is connected to the purge gas cylinder 35 and the buffer tank 4 through the purge gas feed pipe 53 and the main air inlet line 43, respectively. The purge gas is vented through the vent line 55 and the vent valve 26. One end of the vent line 55 is connected to the main gas cylinder filling line 50 on the satellite.

[0058] The gas to be recovered in the system is sent into the recovery gas cylinder group 31 through the first working fluid recovery valve 30; the recovery gas cylinder group 31 is connected to the purifier 7 and the on-board gas cylinder through the first recovery pipeline 56, the purifier outlet pipeline 48, and the on-board gas cylinder filling pipeline 50, and is used for the recovery of krypton and xenon from the membrane compressor, the purifier 7, and the on-board gas cylinder; the vacuum pump 28 is connected to the on-board gas cylinder filling main pipeline 50 through the vacuum valve 27 and the vacuuming pipeline 52, and evacuates the system.

[0059] The first purity detection point is located upstream of the onboard gas cylinder. It connects the purifier outlet line 48 to the trace water analyzer 39, the trace oxygen analyzer 40, and the sampling gas cylinder 38 via the first analysis line 51. Part of the line is used to detect water and oxygen content during the refueling process, and the other part goes to the sampling gas cylinder 38. The second detection point is connected above the end onboard gas cylinder refueling valve. It connects the onboard gas cylinder refueling main line 50 to the krypton-xenon analyzer 41 via the second analysis line 57. It is used for krypton and xenon purity detection. The water and oxygen detection at the two detection points are switched between the same trace water analyzer 39 and trace oxygen analyzer 40, respectively.

[0060] A first flow meter 58 is installed on the purge gas inlet line 53 to detect the purge gas feed flow rate; a second flow meter 59 is installed on the main inlet line 43 to detect the inlet flow rate during system filling; a third flow meter 60 is installed on the heat exchanger outlet line 46 to detect the gas flow rate when entering the purifier 7; and a pressure gauge 61 is installed on the onboard gas cylinder filling main line to detect the pressure of the filling gas before entering the onboard gas cylinder.

[0061] The working principle is as follows:

[0062] First, start the replacement system: Open the valves: main filling valve 8, first star gas cylinder inlet valve 9, second star gas cylinder inlet valve 10, third star gas cylinder inlet valve 11, fourth star gas cylinder inlet valve 12, fifth star gas cylinder inlet valve 13, sixth star gas cylinder inlet valve 14, second working fluid recovery valve 25, reflux valve 29, and vacuum valve 27. After evacuating the entire system to <2 Pa, close vacuum valve 27. Then open purge gas valve 36, electric heater 37, second analysis valve 23, third analysis valve 24, fifth analysis valve 33, and sixth analysis valve 34. Purge the entire system with 6.0 N krypton gas until 0.5 MPa, then open vent valve 26 to vent. During the replacement process, the trace water and oxygen analyzers monitor and record data in real time. Repeat the evacuation and replacement process multiple times until both water and oxygen indicators of the entire system are qualified. Finally, evacuate the entire system to <2 Pa and close all valves.

[0063] Then, after the onboard gas cylinders have completed the replacement and testing, the refueling system begins the refueling operation. First, the onboard gas cylinders are weighed, and then the following valves are opened: Gas Source Main Valve 3, Filling Main Valve 8, Return Valve 29, First Onboard Gas Cylinder Inlet Valve 9, Second Onboard Gas Cylinder Inlet Valve 10, Third Onboard Gas Cylinder Inlet Valve 11, Fourth Onboard Gas Cylinder Inlet Valve 12, Fifth Onboard Gas Cylinder Inlet Valve 13, Sixth Onboard Gas Cylinder Inlet Valve 14, First Analysis Valve 22, Second Analysis Valve 23, Third Analysis Valve 24, Fourth Analysis Valve 32, Fifth Analysis Valve 33, and Sixth Analysis Valve 34. The diaphragm press is started to refuel to the specified amount at the specified flow rate and then automatically shuts off. During the refueling process, the gas in the onboard gas cylinders is sampled and analyzed using a trace water and oxygen analyzer and a krypton-xenon purity analyzer. If the gas is found to be substandard, the refueling is automatically stopped and the cylinders are replaced. This refueling system cools the pressurized xenon or krypton gas. During the refueling process, it automatically controls the flow rate and temperature of the injected working gas based on the surface temperature and pressure of the onboard cylinders to ensure that the cylinder temperature remains within a safe range. Once the weight on the electronic scale below the cylinder reaches the target value, the following valves are automatically closed: main filling valve 8, first onboard cylinder inlet valve 9, second onboard cylinder inlet valve 10, third onboard cylinder inlet valve 11, fourth onboard cylinder inlet valve 12, fifth onboard cylinder inlet valve 13, and sixth onboard cylinder inlet valve 14, completing the filling process.

[0064] In cases where unforeseen circumstances necessitate the evacuation of xenon or krypton from the storage tank during refueling, the system allows for basic recovery, minimizing losses. The recovery system can also be used for displacement and complete recovery of residual working gas after refueling, reducing gas loss costs during the refueling operation.

[0065] The aforementioned filling control module, vacuum pump, and detection instruments are all connected to the filling control cabinet. The cabinet acquires the detection parameters from the instruments and controls the valve operation, enabling the filling system, replacement system, and recovery system to switch between operations. The specific connection structure is existing technology or something that requires no inventive effort from those skilled in the art, and will not be described further here. Components not mentioned in this embodiment are conventional equipment and will not be described further.

[0066] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A rapid refueling system for aerospace electric propulsion krypton-xenon media, characterized in that, The system includes a gas source cylinder group for supplying working gas; a membrane compressor, whose inlet is connected to the gas source cylinder group via a pipeline for pressurizing the working gas; a cooler connected to the outlet pipeline of the membrane compressor for cooling the pressurized working gas; a purifier, whose inlet is connected to the outlet of the cooler for purifying the working gas; an on-board gas cylinder group connected to the outlet of the purifier via a filling pipeline and a filling valve; and a working gas recovery system connected to the membrane compressor, the purifier, and the on-board gas cylinder group via a recovery pipeline and a recovery valve, respectively.

2. The aerospace electric propulsion krypton-xenon medium rapid refueling system according to claim 1, characterized in that, The gas source cylinder group is mounted on the gas source weighing device.

3. The aerospace electric propulsion krypton-xenon medium rapid refueling system according to claim 1, characterized in that, The membrane compressor is a diaphragm compressor with an outlet pressure range of 0.5 MPa to 30 MPa.

4. The aerospace electric propulsion krypton-xenon medium rapid refueling system according to claim 1, characterized in that, The cooler is a heat exchanger that uses chilled water as the cooling medium.

5. The aerospace electric propulsion krypton-xenon medium rapid refueling system according to claim 1, characterized in that, The purifier is filled with an adsorbent for adsorbing water and oxygen.

6. The aerospace electric propulsion krypton-xenon medium rapid refueling system according to claim 1, characterized in that, The on-board gas cylinder group consists of multiple on-board gas cylinders connected in parallel. Each on-board gas cylinder has an independent control valve on its inlet pipe, and the on-board gas cylinder group is mounted on an on-board gas cylinder weighing device.

7. A rapid refueling system for aerospace electric propulsion krypton-xenon media according to claim 1, characterized in that, The working fluid recovery system includes a recovery gas cylinder group, which is connected to the outlet of the purifier and the filling pipeline of the onboard gas cylinder group through the recovery valve and the recovery pipeline.

8. A rapid refueling system for aerospace electric propulsion krypton-xenon media according to claim 1, characterized in that, It also includes a vacuum system, which includes a vacuum pump connected to the refueling pipeline of the on-board gas cylinder group via a vacuum valve.

9. A rapid refueling system for aerospace electric propulsion krypton-xenon media according to claim 1, characterized in that, It also includes a purging system, which includes a purging gas cylinder and an electric heater. The purging gas cylinder is connected to the pipeline between the gas source cylinder group and the membrane press through a purging valve and the electric heater.

10. A rapid refueling system for aerospace electric propulsion krypton-xenon media according to any one of claims 1 to 9, characterized in that, It also includes an automatic control system, which is connected to all automatic valves in the system, the membrane press, each weighing device, and pressure, temperature and purity analyzers installed on the pipeline, for the purpose of realizing automatic control of the filling process.

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