Spaceflight helium recycling control system, method and device

Abstract

The application discloses a space helium recycling control system, method and equipment, relates to the technical field of space rare gas recycling system control, and comprises four detection devices, four adjusting devices and a control device. Based on the actual concentration of a first purified target impurity in the space helium output by a recovery device, the actual concentration of a second purified target impurity in the space helium output by an adsorption device, the actual concentration of a third purified target impurity in the space helium output by a low-temperature device, the actual temperature of the space helium output by the low-temperature device, the actual concentration of a fourth purified target impurity in the space helium output by a dehydrogenation device and the actual pressure of the space helium output by the dehydrogenation device, the flow, temperature and pressure of the space helium are adjusted, and the space helium recycling system is controlled. The application can well control the space helium recycling system and further reduce resource waste.

Description

Technical Field

[0001] This application relates to the field of control technology for aerospace rare gas recycling systems, and in particular to a control system, method and equipment for aerospace helium recycling. Background Technology

[0002] As a precious and rare gas, aerospace helium is widely used in rocket and spacecraft launches for several reasons: first, as an energy source to operate various pneumatic valves and components (cryogenic valves in liquid hydrogen tanks should use helium); second, as a purification and replacement gas, used to purify and replace the filling system of liquid propellants (helium purging in liquid hydrogen refueling systems); third, to pressurize and purify rocket fuel tanks (hydrogen tank pressurization and purging); and fourth, to clean rocket engine systems (using nitrogen or helium as needed).

[0003] Currently, the demand for helium in aerospace is substantial, but helium resources are quite scarce, with helium-containing natural gas being limited in quantity and low in content. Therefore, the recovery, purification, and reuse of helium are of great significance for conserving helium resources and reducing usage costs. Existing research has proposed aerospace helium recycling systems to achieve the recovery, purification, and reuse of aerospace helium. If these systems can be effectively controlled, resource waste could be further reduced. However, control technologies for effectively controlling such systems are currently lacking. Summary of the Invention

[0004] The purpose of this application is to provide a control system, method and equipment for aerospace helium recycling, which can effectively control the aerospace helium recycling system and further reduce resource waste.

[0005] To achieve the above objectives, this application provides the following solution.

[0006] In a first aspect, this application provides a space helium recycling control system for controlling a space helium recycling system. The space helium recycling system includes a recovery device, an adsorption device, a cryogenic device, a reheating device, a dehydrogenation device, and a compression device connected in sequence. The space helium recycling control system includes: a first detection device, a first adjustment device, a second detection device, a second adjustment device, a third detection device, a third adjustment device, a fourth detection device, a fourth adjustment device, and a control device. Both the first detection device and the first adjustment device are installed between the recovery device and the adsorption device. The first detection device is used to detect the actual concentration of the first purification target impurity in the aerospace helium output by the recovery device, and the first adjustment device is used to adjust the flow rate of the aerospace helium entering the adsorption device. The second detection device and the second adjustment device are both installed between the adsorption device and the cryogenic device. The second detection device is used to detect the actual concentration of the second purification target impurity in the aerospace helium gas output by the adsorption device, and the second adjustment device is used to adjust the flow rate of the aerospace helium gas entering the cryogenic device. The third detection device is installed between the cryogenic device and the rewarming device, and the third regulating device is installed between the rewarming device and the dehydrogenation device. The third detection device is used to detect the actual concentration of the third purification target impurity in the aerospace helium output by the cryogenic device and the actual temperature of the aerospace helium output by the cryogenic device. The third regulating device is used to regulate the flow rate of the aerospace helium entering the dehydrogenation device. The fourth detection device and the fourth adjustment device are both installed between the dehydrogenation device and the compression device. The fourth detection device is used to detect the actual concentration of the fourth purification target impurity in the aerospace helium output from the dehydrogenation device and the actual pressure of the aerospace helium output from the dehydrogenation device. The fourth adjustment device is used to adjust the flow rate of the aerospace helium entering the compression device. The control device is used to control the first regulating device based on the actual concentration of the first target impurity to be purified, the second regulating device based on the actual concentration of the second target impurity to be purified, the third regulating device based on the actual concentration of the third target impurity to be purified, the warming device based on the actual temperature, the fourth regulating device based on the actual concentration of the fourth target impurity to be purified, and the compression device based on the actual pressure.

[0007] Secondly, this application provides a space helium recycling control method, which operates based on the aforementioned space helium recycling control system. The space helium recycling control method includes: The actual concentration of the first purification target impurity in the aerospace helium output by the recovery device, the actual concentration of the second purification target impurity in the aerospace helium output by the adsorption device, the actual concentration of the third purification target impurity in the aerospace helium output by the cryogenic device, the actual temperature of the aerospace helium output by the cryogenic device, the actual concentration of the fourth purification target impurity in the aerospace helium output by the dehydrogenation device, and the actual pressure of the aerospace helium output by the dehydrogenation device are obtained. The first regulating device is controlled based on the actual concentration of the first target impurity for purification; the second regulating device is controlled based on the actual concentration of the second target impurity for purification; the third regulating device is controlled based on the actual concentration of the third target impurity for purification; the temperature recovery device is controlled based on the actual temperature; the fourth regulating device is controlled based on the actual concentration of the fourth target impurity for purification; and the compression device is controlled based on the actual pressure.

[0008] Thirdly, this application provides a computer device, including: a memory, a processor, and a computer program stored in the memory and capable of running on the processor, wherein the processor executes the computer program to implement the above-described aerospace helium recycling control method.

[0009] According to the specific embodiments provided in this application, this application has the following technical effects.

[0010] This application provides a control system, method, and equipment for aerospace helium recycling, used to control an aerospace helium recycling system. The system includes four detection devices, four adjustment devices, and one control device. Based on the actual concentration of a first purification target impurity in the aerospace helium output from the recovery device, the first adjustment device is controlled to adjust the flow rate of the aerospace helium entering the adsorption device. Based on the actual concentration of a second purification target impurity in the aerospace helium output from the adsorption device, the second adjustment device is controlled to adjust the flow rate of the aerospace helium entering the cryogenic device. Based on the actual concentration of a third purification target impurity in the aerospace helium output from the cryogenic device, the third adjustment device is controlled to adjust the flow rate of the aerospace helium entering the cryogenic device. The flow rate of aerospace helium entering the dehydrogenation unit is controlled by a temperature control device based on the actual temperature of the aerospace helium output from the cryogenic unit, thus adjusting the temperature of the aerospace helium entering the dehydrogenation unit. A fourth regulating device is controlled based on the actual concentration of the fourth purification target impurity in the aerospace helium output from the dehydrogenation unit, thus adjusting the flow rate of aerospace helium entering the compression unit. Finally, the compression unit is controlled based on the actual pressure of the aerospace helium output from the dehydrogenation unit, thus adjusting the pressure of the aerospace helium output from the compression unit. Through this control process, the aerospace helium recycling system can be effectively controlled, improving purification efficiency, enabling more aerospace helium to be reused, and further reducing resource waste. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of a space helium recycling control system provided in Embodiment 1 of this application.

[0013] Figure 2 This is a schematic diagram illustrating the control principle of a variable universe fuzzy control method provided in Embodiment 1 of this application.

[0014] Figure 3 This is a flowchart illustrating a control method for the recycling of aerospace helium provided in Embodiment 2 of this application.

[0015] Figure 4 This is a schematic diagram of the structure of a computer device provided in Embodiment 3 of this application.

[0016] Figure label: 1-Recovery gasbag, 2-Recovery compressor, 3-Initial helium gas collecting bottle, 4-First concentration sensor, 5-First flow sensor, 6-First regulating valve, 7-Adsorption device, 8-Second concentration sensor, 9-Second flow sensor, 10-Second regulating valve, 11-Cryogenic device, 12-Temperature sensor, 13-Third concentration sensor, 14-Third flow sensor, 15-Warm-up device, 16-Third regulating valve, 17-Dehydrogenation device, 18-Fourth concentration sensor, 19-Pressure sensor, 20-Fourth flow sensor, 21-Fourth regulating valve, 22-Compressor, 23-Recovery tank, 24-Control device, 25-Fifth regulating valve. Detailed Implementation

[0017] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0018] Example 1.

[0019] This embodiment provides a space helium recycling control system for controlling a space helium recycling system. The space helium recycling system includes a recovery device, an adsorption device, a cryogenic device, a reheating device, a dehydrogenation device, and a compression device connected in sequence. The space helium recycling control system includes: a first detection device, a first adjustment device, a second detection device, a second adjustment device, a third detection device, a third adjustment device, a fourth detection device, a fourth adjustment device, and a control device.

[0020] Both the first detection device and the first adjustment device are installed between the recovery device and the adsorption device. The first detection device is used to detect the actual concentration of the first purification target impurity in the aerospace helium output by the recovery device, and the first adjustment device is used to adjust the flow rate of the aerospace helium entering the adsorption device.

[0021] The second detection device and the second adjustment device are both installed between the adsorption device and the cryogenic device. The second detection device is used to detect the actual concentration of the second purification target impurity in the aerospace helium gas output by the adsorption device, and the second adjustment device is used to adjust the flow rate of the aerospace helium gas entering the cryogenic device.

[0022] The third detection device is installed between the cryogenic device and the rewarming device, and the third regulating device is installed between the rewarming device and the dehydrogenation device. The third detection device is used to detect the actual concentration of the third purification target impurity in the aerospace helium output by the cryogenic device and the actual temperature of the aerospace helium output by the cryogenic device. The third regulating device is used to regulate the flow rate of the aerospace helium entering the dehydrogenation device.

[0023] The fourth detection device and the fourth regulation device are both installed between the dehydrogenation device and the compression device. The fourth detection device is used to detect the actual concentration of the fourth purification target impurity in the aerospace helium output from the dehydrogenation device and the actual pressure of the aerospace helium output from the dehydrogenation device. The fourth regulation device is used to regulate the flow rate of the aerospace helium entering the compression device.

[0024] The control device is used to control the first regulating device based on the actual concentration of the first target impurity to be purified, the second regulating device based on the actual concentration of the second target impurity to be purified, the third regulating device based on the actual concentration of the third target impurity to be purified, the warming device based on the actual temperature, the fourth regulating device based on the actual concentration of the fourth target impurity to be purified, and the compression device based on the actual pressure.

[0025] The aforementioned aerospace helium recycling control system can control the flow rate regulating device, the temperature recovery device, and the pressure regulating device based on the actual concentration of the target impurities in the aerospace helium, as well as the actual temperature and pressure of the aerospace helium. This allows for effective control of the aerospace helium recycling system, improving purification efficiency, reducing energy consumption, and enhancing operational efficiency and accuracy. It also provides continuous production and on-demand purification capabilities, enabling the reuse of more aerospace helium and further reducing resource waste.

[0026] The following section will first introduce the aerospace helium recycling system controlled in this embodiment. This system is used to achieve the recycling of aerospace helium. Aerospace helium recycling is a technology that collects, purifies, compresses, and resupplyes used aerospace helium in aerospace scenarios, realizing a closed-loop cycle to replace single-use emissions. Figure 1 As shown, the aerospace helium recycling system includes a recovery device, an adsorption device 7, a cryogenic device 11, a warming device, a dehydrogenation device 17, and a compression device connected in sequence, to realize the recovery, purification, and reuse of aerospace helium.

[0027] The recovery device is used to collect used aerospace helium. The recovery device can directly use existing components. As an example, the recovery device can include a recovery gasbag 1, a recovery compressor 2, and an initial helium collection bottle 3 connected in sequence. The low-pressure helium gas discharged from the use end (i.e., the used aerospace helium) first enters the recovery gasbag 1. The recovery gasbag 1 buffers the pressure, eliminates pulsation, and ensures stable gas intake. The recovery compressor 2 draws low-pressure helium from the recovery gasbag 1 and compresses the low-pressure helium to high pressure to obtain high-pressure helium. The compressed high-pressure helium is sent to the initial helium collection bottle 3 for storage, thus completing the helium recovery.

[0028] The adsorption device 7 is used to remove water, carbon dioxide and grease from the aerospace helium output by the recovery device. The adsorption device 7 can directly use existing components.

[0029] The cryogenic device 11 is used to remove nitrogen and oxygen from the aerospace helium output by the adsorption device 7. The cryogenic device 11 can directly use existing components.

[0030] The reheating device is used to adjust the temperature of the aerospace helium output from the cryogenic device 11 to a preset temperature range. At this time, the temperature of the aerospace helium output by the reheating device is within the preset temperature range, specifically equal to the temperature of the aerospace helium entering the cryogenic device 11. The reheating device can directly use existing components. As an example, the reheating device uses a reheater 15, which can be electrically driven. The reheater 15 is a heat exchange device that realizes efficient heat exchange between cold and hot fluids.

[0031] The dehydrogenation device 17 is used to remove hydrogen from the aerospace helium output by the reheating device. The dehydrogenation device 17 can directly use existing components.

[0032] The compression device is used to compress the aerospace helium output from the dehydrogenation unit 17, completing the helium purification process to obtain purified helium. It can also be used to store the purified helium. The compression device can directly utilize existing components. As an example, the compression device may include a compressor 22 and a recovery tank 23. The compressor 22 compresses the aerospace helium output from the dehydrogenation unit 17, completing the helium purification process, and then sends the obtained purified helium to the recovery tank 23 for storage. The compressor 22 can be motor-driven and can be a diaphragm compressor. Of course, the compressor 22 can also be other types of compressors, as long as they can perform the compression function.

[0033] Based on the aforementioned aerospace helium recycling system, this embodiment further describes the aerospace helium recycling control system. This control system includes: an impurity concentration sensor (used to detect the concentration of the target impurities to be purified (i.e., impurities to be removed through purification, including water (H2O), carbon dioxide (CO2), grease, nitrogen (N2), oxygen (O2), and hydrogen (H2))), a flow sensor, a temperature sensor 12, a pressure sensor 19, a regulating valve, and a control device 24. The H2O, CO2, and grease concentration sensors are respectively installed at the outlet of the recovery device and the outlet of the adsorption device 7. The N2 and O2 concentration sensors are respectively installed at the outlet of the recovery device, the outlet of the adsorption device 7, and the outlet of the cryogenic device 11. The H2 concentration sensor is respectively installed at the outlet of the recovery device, the outlet of the cryogenic device 11, and the outlet of the dehydrogenation device 17. The flow sensor is respectively installed at the outlet of the adsorption device... Temperature sensor 12 is installed at the outlet of cryogenic unit 11, and pressure sensor 19 is installed at the outlet of dehydrogenation unit 17 on the pipelines before device 7, cryogenic unit 11, dehydrogenation unit 17, and compression unit. The inlet flow rate is regulated by a regulating valve. The input signals of control device 24 include: actual concentration, actual temperature, actual pressure, and other purification target gas condition parameters of the target impurities (H2O, CO2, grease, N2, O2, H2) under different operating conditions, as well as operating condition parameters such as regulating valve opening, regenerator 15 load, and compressor 22 speed. The output signals of control device 24 include: opening change, load change, and speed change. The controlled objects are: regulating valve opening actuator, regenerator load actuator, and compressor speed actuator, to control the regulating valve opening, regenerator 15 load, and compressor 22 speed.

[0034] (a) First detection device and first adjustment device.

[0035] Both the first detection device and the first adjustment device are installed between the recovery device and the adsorption device 7. After defining the flow direction of aerospace helium, the first detection device is located before the first adjustment device. That is, the sequence is recovery device, first detection device, first adjustment device and adsorption device 7. The first detection device is used to detect the actual concentration of the first purification target impurity in the aerospace helium output by the recovery device, and the first adjustment device is used to adjust the flow rate of aerospace helium entering the adsorption device 7.

[0036] The first detection device includes a first concentration sensor 4, which is used to detect the actual concentration of the first purified target impurity in the aerospace helium output by the recovery device. The actual concentration of the first purified target impurity includes the actual concentration of water, carbon dioxide, grease, nitrogen, oxygen and hydrogen.

[0037] Optionally, the first detection device further includes a first flow sensor 5, which is used to detect the actual flow rate of the aerospace helium output by the recovery device.

[0038] The positions of the first concentration sensor 4 and the first flow sensor 5 are arbitrary. The first concentration sensor 4 can be set before the first flow sensor 5, or it can be set after the first flow sensor 5.

[0039] The first regulating device includes a first regulating valve 6, which is used to regulate the flow rate of aerospace helium entering the adsorption device 7.

[0040] Through the aforementioned first detection device and first adjustment device, this embodiment can control the flow rate of aerospace helium entering the adsorption device 7. At this time, the control device 24 is used to control the first adjustment device based on the actual concentration of the first purification target impurity. Specifically, in terms of controlling the first adjustment device based on the actual concentration of the first purification target impurity, the control device 24 is used to calculate the first concentration deviation and the first concentration deviation change rate based on the actual concentration and target concentration of the first purification target impurity. Using the first concentration deviation and the first concentration deviation change rate as input, the first opening change amount is determined using the variable universe fuzzy control method, and the opening of the first adjustment valve 6 in the first adjustment device is controlled based on the first opening change amount, so that the opening of the first adjustment valve 6 changes by the first opening change amount. If the first opening change amount is positive, the opening of the first adjustment valve 6 increases, and the increase in change amount is equal to the first opening change amount. If the first opening change amount is negative, the opening of the first adjustment valve 6 decreases, and the decrease in change amount is equal to the first opening change amount.

[0041] (ii) Second detection device and second adjustment device.

[0042] The second detection device and the second adjustment device are both installed between the adsorption device 7 and the cryogenic device 11. The second detection device is located before the second adjustment device, that is, the adsorption device 7, the second detection device, the second adjustment device and the cryogenic device 11 are arranged in sequence. The second detection device is used to detect the actual concentration of the second purification target impurity in the aerospace helium output by the adsorption device 7, and the second adjustment device is used to adjust the flow rate of the aerospace helium entering the cryogenic device 11.

[0043] The second detection device includes a second concentration sensor 8, which is used to detect the actual concentration of the second purification target impurity in the aerospace helium output by the adsorption device 7. The actual concentration of the second purification target impurity includes the actual concentration of water, carbon dioxide, oil, nitrogen and oxygen.

[0044] Optionally, the second detection device also includes a second flow sensor 9, which is used to detect the actual flow rate of aerospace helium output by the adsorption device 7.

[0045] The positions of the second concentration sensor 8 and the second flow sensor 9 are arbitrary. The second concentration sensor 8 can be set before the second flow sensor 9, or it can be set after the second flow sensor 9.

[0046] The second regulating device includes a second regulating valve 10, which is used to regulate the flow rate of aerospace helium entering the cryogenic device 11.

[0047] Through the aforementioned second detection device and second adjustment device, this embodiment can control the flow rate of aerospace helium entering the cryogenic device 11. At this time, the control device 24 is used to control the second adjustment device based on the actual concentration of the second purification target impurity. Specifically, in terms of controlling the second adjustment device based on the actual concentration of the second purification target impurity, the control device 24 is used to calculate the second concentration deviation and the second concentration deviation change rate based on the actual concentration and target concentration of the second purification target impurity. Using the second concentration deviation and the second concentration deviation change rate as input, the second opening change amount is determined using the variable universe fuzzy control method, and the opening of the second adjustment valve 10 in the second adjustment device is controlled based on the second opening change amount, so that the opening of the second adjustment valve 10 changes by the second opening change amount. If the second opening change amount is positive, the opening of the second adjustment valve 10 increases, and the increase in change amount is equal to the second opening change amount. If the second opening change amount is negative, the opening of the second adjustment valve 10 decreases, and the decrease in change amount is equal to the second opening change amount.

[0048] (iii) The third detection device and the third adjustment device.

[0049] The third detection device is installed between the cryogenic device 11 and the rewarming device, and the third regulating device is installed between the rewarming device and the dehydrogenation device 17. The third detection device is used to detect the actual concentration of the third purification target impurity in the aerospace helium output by the cryogenic device 11 and the actual temperature of the aerospace helium output by the cryogenic device 11. The third regulating device is used to regulate the flow rate of the aerospace helium entering the dehydrogenation device 17.

[0050] The third detection device includes a third concentration sensor 13 and a temperature sensor 12. The third concentration sensor 13 is used to detect the actual concentration of the third purification target impurity in the aerospace helium output by the cryogenic device 11. The actual concentration of the third purification target impurity includes the actual concentration of nitrogen, oxygen and hydrogen. The temperature sensor 12 is used to detect the actual temperature of the aerospace helium output by the cryogenic device 11.

[0051] Optionally, the third detection device also includes a third flow sensor 14, which is used to detect the actual flow rate of the space helium output by the cryogenic device 11.

[0052] The positions of the third concentration sensor 13, the temperature sensor 12, and the third flow sensor 14 are arbitrary. They can be set sequentially, or other positional relationships can be used.

[0053] The third regulating device includes a third regulating valve 16, which is used to regulate the flow rate of aerospace helium entering the dehydrogenation device 17.

[0054] This embodiment can also include a fifth regulating valve 25, located at the inlet of the reheating device. When the temperature sensor 12 detects that the temperature of the aerospace helium output by the cryogenic device 11 is not within the preset temperature range, the control device 24 controls the third regulating valve 16 to close and controls the fifth regulating valve 25 to open, allowing the aerospace helium to enter the reheating device and adjust the load of the reheater 15 until the temperature sensor 12 detects that the temperature of the aerospace helium output by the cryogenic device 11 is within the preset temperature range. Then, the control device 24 controls the third regulating valve 16 to open and controls the fifth regulating valve 25 to close, allowing the aerospace helium to enter the dehydrogenation device 17 and adjusting the opening degree of the third regulating valve 16.

[0055] Through the aforementioned third detection device and third adjustment device, combined with the reheating device, this embodiment can control the flow rate and temperature of aerospace helium entering the dehydrogenation device 17. At this time, the control device 24 controls the third adjustment device based on the actual concentration of the third purification target impurity and controls the reheating device based on the actual temperature. Specifically, regarding controlling the third adjustment device based on the actual concentration of the third purification target impurity and controlling the reheating device based on the actual temperature, the control device 24 calculates the third concentration deviation and the third concentration deviation change rate based on the actual concentration and target concentration of the third purification target impurity. Using the third concentration deviation and the third concentration deviation change rate as input, it determines the third opening change using a variable universe fuzzy control method and controls the opening of the third adjustment valve 16 in the third adjustment device based on the third opening change, so that the third... The opening change of the third regulating valve 16 is determined by the change in the third opening. If the change in the third opening is positive, the opening of the third regulating valve 16 increases, and the increase in the change is equal to the change in the third opening. If the change in the third opening is negative, the opening of the third regulating valve 16 decreases, and the decrease in the change in the third opening is equal to the change in the third opening. Based on the actual temperature and the target temperature, the temperature deviation and the rate of change of temperature deviation are calculated. Using the temperature deviation and the rate of change of temperature deviation as inputs, the load change is determined using a variable universe of discourse fuzzy control method. Based on the load change, the load of the regenerator 15 in the reheating device is controlled, so that the load change of the regenerator 15 is determined by the change in the load. If the load change is positive, the load of the regenerator 15 increases, and the increase in the change ...

[0056] (iv) The fourth detection device and the fourth adjustment device.

[0057] The fourth detection device and the fourth adjustment device are both installed between the dehydrogenation device 17 and the compression device. The fourth detection device is located before the fourth adjustment device. That is, the sequence is dehydrogenation device 17, fourth detection device, fourth adjustment device and compression device. The fourth detection device is used to detect the actual concentration of the fourth purification target impurity in the aerospace helium output from the dehydrogenation device 17 and the actual pressure of the aerospace helium output from the dehydrogenation device 17. The fourth adjustment device is used to adjust the flow rate of the aerospace helium entering the compression device.

[0058] The fourth detection device includes a fourth concentration sensor 18 and a pressure sensor 19. The fourth concentration sensor 18 is used to detect the actual concentration of the fourth purification target impurity in the aerospace helium output from the dehydrogenation device 17. The actual concentration of the fourth purification target impurity includes the actual concentration of hydrogen. The pressure sensor 19 is used to detect the actual pressure of the aerospace helium output from the dehydrogenation device 17.

[0059] Optionally, the fourth detection device also includes a fourth flow sensor 20, which is used to detect the actual flow rate of aerospace helium output from the dehydrogenation device 17.

[0060] The positions of the fourth concentration sensor 18, pressure sensor 19, and fourth flow sensor 20 are arbitrary. They can be set sequentially, or other positional relationships can be used.

[0061] The fourth regulating device includes a fourth regulating valve 21, which is used to regulate the flow rate of aerospace helium entering the compression device.

[0062] Through the aforementioned fourth detection device and fourth adjustment device, combined with the compression device, this embodiment can control the flow rate of aerospace helium entering the compression device and the pressure of aerospace helium output by the compression device. At this time, the control device 24 is used to control the fourth adjustment device based on the actual concentration of the fourth purification target impurity, and to control the compression device based on the actual pressure. Specifically, regarding controlling the fourth adjustment device based on the actual concentration of the fourth purification target impurity and the compression device based on the actual pressure, the control device 24 calculates the fourth concentration deviation and the fourth concentration deviation change rate based on the actual concentration and target concentration of the fourth purification target impurity. Using the fourth concentration deviation and the fourth concentration deviation change rate as inputs, a variable universe fuzzy control method is used to determine the fourth opening change amount, and the opening of the fourth adjustment valve 21 in the fourth adjustment device is controlled based on the fourth opening change amount. The control mechanism adjusts the opening of the fourth regulating valve 21 by a certain amount. If the change in the fourth opening is positive, the opening of the fourth regulating valve 21 increases, and the increase in the change is equal to the change in the fourth opening. If the change in the fourth opening is negative, the opening of the fourth regulating valve 21 decreases, and the decrease in the change in the fourth opening is equal to the change in the fourth opening. Based on the actual pressure and the target pressure, the pressure deviation and the rate of change of pressure deviation are calculated. Using the pressure deviation and the rate of change of pressure deviation as inputs, the variable universe of discourse fuzzy control method is used to determine the change in speed. Based on the change in speed, the speed of the compressor 22 in the compression device is controlled, so that the speed of the compressor 22 changes by a certain amount. If the change in speed is positive, the speed of the compressor 22 increases, and the increase in the change in the change in speed is equal to the change in speed. If the change in speed is negative, the speed of the compressor 22 decreases, and the decrease in the change in speed is equal to the change in speed.

[0063] It should be noted that the target concentration, target temperature, and target pressure need to be determined by the user based on the actual operating conditions and the different range of target impurity concentration requirements for helium purification. The target concentration can be calibrated using the MAP (Maximum Acceptable Limit) of the optimal impurity concentration under actual operating conditions, the target temperature can be MAP of the optimal target gas temperature under actual operating conditions, and the target pressure can be MAP of the optimal target gas pressure under actual operating conditions.

[0064] The control device 24 in this embodiment can be any controller with processing and control functions. Since it uses a variable universe fuzzy control method for control, it can also be called a variable universe fuzzy controller.

[0065] At this time, the working process of the aerospace helium recycling control system is as follows: the recovered impurity helium enters the recovery gasbag 1, and the recovery compressor 2 pressurizes the impurity helium into the initial helium collection bottle 3. The impurity helium flows through the first concentration sensor 4 and the first flow sensor 5 after the initial helium collection bottle 3 and reaches the first regulating valve 6. The first concentration sensor 4 and the first flow sensor 5 transmit signals to the control device 24. The control device 24 compares the target concentration with the actual concentration to obtain the helium concentration deviation. After processing by the control device 24, the first opening change of the first regulating valve 6 is generated and fed back to the first regulating valve 6 after the initial helium collection bottle 3 to adjust the helium flow rate; after passing through the adsorption device... After adsorption and removal of H2O, CO2, and grease, the impurity helium flow passes through the second concentration sensor 8 and the second flow sensor 9 after adsorption device 7, and reaches the second regulating valve 10. The second concentration sensor 8 and the second flow sensor 9 transmit signals to the control device 24. The control device 24 compares the target concentration with the actual concentration to obtain the helium concentration deviation. After processing by the control device 24, the deviation is generated as the second opening change of the second regulating valve 10, which is fed back to the second regulating valve 10 after adsorption device 7 to adjust the helium flow rate. After removing N2 and O2 by the cryogenic device 11, the impurity helium flow passes through the temperature sensor 12, the third concentration sensor 13, and the third flow sensor after cryogenic device 11. Sensor 14 reaches the regenerator 15 and the third regulating valve 16. Temperature sensor 12, third concentration sensor 13, and third flow sensor 14 transmit signals to control device 24. Control device 24 compares the target temperature with the actual temperature and the target concentration with the actual concentration to obtain the helium temperature deviation and helium concentration deviation. After processing by control device 24, the load change of regenerator 15 and the third opening change of third regulating valve 16 are generated and fed back to regenerator 15 and third regulating valve 16 after cryogenic device 11 to adjust the load of regenerator 15 and helium flow rate. After H2 is removed by dehydrogenation device 17, impurity-free helium flows through dehydrogenation device 17. The fourth concentration sensor 18, pressure sensor 19, and fourth flow sensor 20 reach the fourth regulating valve 21. The fourth concentration sensor 18, pressure sensor 19, and fourth flow sensor 20 transmit signals to the control device 24. The control device 24 compares the target concentration with the actual concentration and the target pressure with the actual pressure to obtain the helium concentration deviation and the helium pressure deviation. After processing by the control device 24, the fourth opening change of the fourth regulating valve 21 and the speed change of the compressor 22 are generated and fed back to the fourth regulating valve 21 and the compressor 22 after the dehydrogenation unit 17 to adjust the helium flow rate and the speed of the compressor 22, so as to pressurize the purified helium into the recovery tank 23.

[0066] In this embodiment, the control device 24 employs a variable universe of discourse fuzzy control method during control. The following, in conjunction with… Figure 2 This paper provides a detailed introduction to the fuzzy control method with variable universe of discourse.

[0067] In the basic universe partitioning of the variable universe fuzzy control method, the basic universe of discourse for the deviation between the actual value and the target value is set as [- , ], the quantization domain is a discrete set {- , - +1, ..., 0, ..., -1, At this point, the deviation quantization factor can be defined as: The fundamental universe of discourse for the rate of change of deviation (the ratio of the difference between the deviation at the current moment and the deviation at the previous moment to the time interval, where the time interval is the time interval between the current moment and the previous moment) is set to [- , ], the quantization domain is a discrete set {- , - +1, ..., 0, ..., -1, At this point, the quantification factor for the rate of change of deviation can be defined as follows: Set the basic universe of discourse for output to [- , ], the quantization domain is a discrete set {- , - +1, ..., 0, ..., -1, At this point, the output quantization factor can be defined as follows: It should be noted that, , , , , , All of these are constants, which are determined by the user based on the target impurity concentration requirements for helium purification under different operating conditions.

[0068] The formula for the deviation universe transformation is: ,in, It represents a deviation in the quantification domain, and is therefore a fuzzy quantity. This represents the floor operation, and based on this, the fundamental domain of the bias [-] can be fuzzed to reduce the bias to a minimum. , Transform into the basic fuzzy control domain[- , ].

[0069] The formula for the universe transformation of the rate of change of deviation is: ,in, To quantify the rate of change of deviation over the domain, which is a fuzzy quantity, the fundamental domain of the rate of change of deviation can be fuzzified [- , ] Convert to fuzzy bias universe of discourse[- , ].

[0070] If the basic fuzzy control universe and the fuzzy deviation universe are fixed, control will be slow when the deviation is large and unstable when the deviation is small. Therefore, this embodiment uses a variable universe, and the final deviation universe is within the basic fuzzy control universe [- , Based on this, a deviation scaling factor is introduced. Through the deviation scaling factor The basic fuzzy control domain [- , ] Convert to the biased universe of discourse[- , Similarly, the final domain of the rate of change of deviation is in the fuzzy deviation domain [- , Based on this, a scaling factor for the rate of change of deviation is introduced. Scaling factor through the rate of change of deviation The fuzzy bias domain [- , Converted to the universe of discourse of the rate of change of deviation[- , This allows the bias domain used in the fuzzy inference engine to change in real time as the bias changes, and the bias rate of change domain to change in real time as the bias rate of change changes. That is, when the bias increases, the bias domain increases appropriately, and when the bias decreases, the bias domain shrinks appropriately. When the bias rate of change increases, the bias rate of change domain increases appropriately, and when the bias rate of change decreases, the bias rate of change domain shrinks appropriately, thereby improving control accuracy.

[0071] It should be noted that, It's a deviation. A continuous function, in [0, The above is strictly monotonous, but can be designed. , The actual deviation, or, can be designed , For the adjustment coefficient, similarly, It is the rate of change of deviation. A continuous function, in [0, The above is strictly monotonous, but can be designed. , The actual rate of change of deviation, or, can be designed .

[0072] Based on this, this embodiment first determines the input deviation. and rate of change of deviation ,like Figure 2 As shown, the input can be the actual concentration of the target impurity to be purified. Actual temperature and actual pressure Calculate the actual concentration and target concentration The difference is used to obtain the deviation. Then, calculate the ratio of the difference between the deviation at the current moment and the deviation at the previous moment to the time interval to obtain the rate of change of deviation. Calculate the actual temperature and target temperature The difference is used to obtain the deviation. Then, calculate the ratio of the difference between the deviation at the current moment and the deviation at the previous moment to the time interval to obtain the rate of change of deviation. Calculate the actual pressure and target pressure The difference is used to obtain the deviation. Then, calculate the ratio of the difference between the deviation at the current moment and the deviation at the previous moment to the time interval to obtain the rate of change of deviation. The outputs are determined to be the change in the opening degree of the regulating valve, the change in the load of the regenerator 15, and the change in the speed of the compressor 22.

[0073] Specifically, when the input is the actual concentration of the first target impurity to be purified, the input deviation and the deviation change rate are the first concentration deviation and the first concentration deviation change rate, and the output is the first opening change of the first regulating valve 6. When the input is the actual concentration of the second target impurity to be purified, the input deviation and the deviation change rate are the second concentration deviation and the second concentration deviation change rate, and the output is the second opening change of the second regulating valve 10. When the input is the actual concentration of the third target impurity to be purified, the input deviation and the deviation change rate are the third concentration deviation and the third concentration deviation change rate, and the output is the third opening change of the third regulating valve 16. When the input is the actual temperature, the input deviation and the deviation change rate are the temperature deviation and the temperature deviation change rate, and the output is the load change of the regenerator 15. When the input is the actual concentration of the fourth target impurity to be purified, the input deviation and the deviation change rate are the fourth concentration deviation and the fourth concentration deviation change rate, and the output is the fourth opening change of the fourth regulating valve 21. When the input is the actual pressure, the input deviation and the deviation change rate are the pressure deviation and the pressure deviation change rate, and the output is the speed change of the compressor 22.

[0074] The first purification target impurity's actual concentration includes the actual concentrations of multiple impurities. The first concentration deviation is the sum of the differences between the actual concentrations of multiple impurities and the target concentration. The second purification target impurity's actual concentration includes the actual concentrations of multiple impurities. The second concentration deviation is the sum of the differences between the actual concentrations of multiple impurities and the target concentration. The third purification target impurity's actual concentration includes the actual concentrations of multiple impurities. The third concentration deviation is the sum of the differences between the actual concentrations of multiple impurities and the target concentration.

[0075] The deviation of the input is calculated. and rate of change of deviation Next, determine the deviation scaling factor. Scaling factor for rate of change of deviation Further define the bias domain [- , ] and the universe of discourse for the rate of change of deviation [- , At the same time, such as Figure 2 As shown, fuzzification is performed, and the result is calculated based on the deviation universe transformation formula. Specifically As a deviation universe transformation formula What is obtained at this time That is , The deviation actually obtained in the quantization universe is a fuzzy quantity, calculated based on the universe transformation formula of the deviation change rate. Specifically As the universe transformation formula of the deviation change rate What is obtained at this time That is , Let be the actual rate of change of deviation obtained in the quantification domain, which is a fuzzy quantity.

[0076] In obtaining and Then, fuzzy inference is further performed using a fuzzy inference engine, which is a mature existing technology. It is only necessary to pay attention to the biased domain [- , ] and the universe of discourse for the rate of change of deviation [- , This can be used as the final universe of discourse in the fuzzy inference engine. First, it is passed through the biased universe of discourse [- , ]Will Convert to deviation The first linguistic value, through the domain of the rate of change of deviation [- , ]Will Converted to rate of change of deviation The second language value is used as input, and then the first and second language values ​​are used as input. The fuzzy rule base shown in Table 1 (also known as the variable universe fuzzy control rule table, which is obtained based on expert experience and the basic principles of variable universe fuzzy control) and the maximum membership method (or centroid method) are used to determine the output third language value. .

[0077] Table 1 Fuzzy Rule Base It should be noted that this embodiment designs 7 language values. In this case, the language variables in the fuzzy rule base are selected based on... , , The seven language values ​​are: Negative Large (NB), Negative Medium (NM), Negative Small (NS), Zero (ZE), Positive Small (PS), Positive Medium (PM), and Positive Large (PB). The values ​​of Negative Large (NB), Negative Medium (NM), Negative Small (NS), Zero (ZE), Positive Small (PS), Positive Medium (PM), and Positive Large (PB) increase sequentially. Among them, Zero, Small, Medium, and Large represent the degree of deviation. When the deviation is large, the main goal is to eliminate the deviation as quickly as possible, so a larger control variable is selected. When the deviation is small, the main goal is to ensure the stability of the system and prevent overshoot, so a smaller control variable is selected.

[0078] The third language value is obtained from the output. Next, deblurring is performed. Deblurring is also a mature existing technology, which requires utilizing the output quantization domain to convert the third language value... Changes converted into output (i.e., changes in opening, load, and speed) Based on the changes in output, a clear control signal is issued and sent to the actuator (i.e., the actuator, which can be an electric actuator, including a regulating valve opening regulating actuator, a regenerator load regulating actuator, and a compressor speed regulating actuator), which further acts on the controlled object (i.e., the regulating valve, the regenerator 15, and the compressor 22) to complete the control.

[0079] It should be noted that the regulating valve is the valve body, responsible for changing the flow area of ​​the gas path and controlling the flow rate. The regulating valve opening adjustment actuator is a drive component (electric / pneumatic) mounted on the valve body. The regulating valve opening adjustment actuator is directly mounted above the valve stem of the regulating valve and mechanically connected to the valve stem. The control device 24 outputs the opening change amount and sends it to the regulating valve opening adjustment actuator. The regulating valve opening adjustment actuator pushes / pulls the valve stem, causing the regulating valve to open larger / close smaller, thereby changing the helium flow rate. The regenerator 15 is a heat exchange device responsible for recovering cold energy and heating helium. The regenerator load adjustment actuator is the actuator that adjusts the heat exchange intensity / bypass flow / air volume of the regenerator 15. It is usually connected to the bypass valve, hot air valve, and cold air flow path regulating valve. The control device 24 outputs the load change amount and sends it to the regenerator load adjustment actuator. The regenerator load adjustment actuator adjusts the bypass flow / heating amount / heat exchange air volume, causing the load of the regenerator 15 to increase / decrease, thereby changing the helium temperature. Compressor 22 is a device that compresses helium and provides circulating power. The compressor speed regulating actuator is a variable frequency / speed control drive unit of compressor 22. The compressor speed regulating actuator is electrically connected to the motor of compressor 22. The control device 24 outputs the speed change and sends it to the compressor speed regulating actuator. The compressor speed regulating actuator changes the motor frequency / voltage, so that the speed of compressor 22 increases / decreases, thereby realizing the change of helium pressure.

[0080] To address the technical deficiencies of existing aerospace helium recycling systems under all operating conditions, this embodiment introduces variable universe of discourse fuzzy control technology when controlling the aerospace helium recycling system, based on the aforementioned variable universe of discourse fuzzy control method. This provides a highly efficient control strategy for the aerospace helium recycling system, achieving optimal control of helium purification accuracy in real time under all operating conditions (different target impurity concentration requirements for helium purification). Under different operating conditions, the control device 24 reads the actual concentration, actual temperature, and actual pressure of the target impurities (H2O, CO2, grease, N2, O2, H2) collected by the detection devices (i.e., the first detection device, the second detection device, the third detection device, and the fourth detection device). Simultaneously, it reads operating parameters such as the opening degree of the regulating valve, the load of the regenerator 15, and the speed of the compressor 22. Since the target concentration, target temperature, and target... The pressure is determined by obtaining the optimal helium flow rate, helium temperature, and helium pressure under the current state (i.e., the current actual operating conditions). Since the helium flow rate, temperature, and pressure can be adjusted based on the regulating valve opening, the load of the regenerator 15, and the compressor speed 22, the actual concentration, temperature, and pressure of the target impurity are compared with the target concentration, temperature, and pressure. Using the deviations and rates of change between the actual and target concentrations, the actual and target temperatures, and the actual and target pressures as inputs, a variable universe of discourse fuzzy control method is used to query the regulating valve opening MAP, the regenerator load MAP, and the compressor speed MAP. These are then compared with the current regulating valve opening, regenerator 15 load, and compressor speed 22 to obtain the changes. These changes are then compared with the variable universe of discourse fuzzy control rule table to output linguistic values. By using the maximum membership method, the inferred linguistic values The changes in opening degree, load, and speed are converted into explicit control signals to determine these changes. The actuators are then controlled based on these changes. At this point, the variable universe of discourse fuzzy control method converts the feedback electrical signals—the concentration deviation and its rate of change of the target impurity, the temperature deviation and its rate of change, and the pressure deviation and its rate of change—into analog signals of opening degree, load, and speed changes, and sends them to the actuators to control them. This, in turn, allows for real-time control of the regulating valve, the recirculator 15, and the compressor 22, thereby achieving full-condition operation. The system enables real-time optimal control of the total helium flow rate (i.e., the helium flow rate entering the adsorption unit 7), the helium flow rate of each sub-cycle (i.e., the helium flow rate entering the cryogenic unit 11, the dehydrogenation unit 17, and the compression unit), the load of the regenerator 15, and the speed of the compressor 22 in the aerospace helium recycling system. It also adjusts the helium flow rate, helium temperature, and helium pressure in real time, and adjusts the purification rate and intensity in real time. This allows the aerospace helium recycling system to achieve adaptive control under all operating conditions, reduce energy loss, improve working efficiency and accuracy, and has the capability for continuous production and on-demand purification.

[0081] The aforementioned aerospace helium recycling control system can precisely and collaboratively control the opening degree of each regulating valve, the load of the regenerator 15, and the speed of the compressor 22. It can achieve real-time optimal control of the total helium flow rate, the helium flow rate of each sub-cycle, the load of the regenerator 15, and the speed of the compressor 22 within different helium purification target impurity concentration requirements. It also achieves efficient control, which can effectively improve system stability, has continuous production and on-demand purification capabilities, improves the recovery speed and purification efficiency of the aerospace helium recycling system, reduces resource waste, and provides technical support for significantly enhancing the support capabilities for future space launch missions.

[0082] Example 2.

[0083] This embodiment provides a control method for the recycling of aerospace helium, which operates based on the aerospace helium recycling control system described in Embodiment 1. Figure 3 As shown, the aerospace helium recycling control method includes the following steps.

[0084] Step S1: Obtain the actual concentration of the first purification target impurity in the aerospace helium output by the recovery device, the actual concentration of the second purification target impurity in the aerospace helium output by the adsorption device, the actual concentration of the third purification target impurity in the aerospace helium output by the cryogenic device, the actual temperature of the aerospace helium output by the cryogenic device, the actual concentration of the fourth purification target impurity in the aerospace helium output by the dehydrogenation device, and the actual pressure of the aerospace helium output by the dehydrogenation device.

[0085] Step S2: Based on the actual concentration of the first target impurity to be purified, control the first regulating device; based on the actual concentration of the second target impurity to be purified, control the second regulating device; based on the actual concentration of the third target impurity to be purified, control the third regulating device; based on the actual temperature, control the warming device; based on the actual concentration of the fourth target impurity to be purified, control the fourth regulating device; and based on the actual pressure, control the compression device.

[0086] The process includes the following steps: controlling the first regulating device based on the actual concentration of the first target impurity; controlling the second regulating device based on the actual concentration of the second target impurity; controlling the third regulating device based on the actual concentration of the third target impurity; controlling the reheating device based on the actual temperature; controlling the fourth regulating device based on the actual concentration of the fourth target impurity; and controlling the compression device based on the actual pressure.

[0087] (1) Based on the actual concentration and target concentration of the first purification target impurity, the first concentration deviation and the first concentration deviation change rate are calculated. The first concentration deviation and the first concentration deviation change rate are used as inputs. The first opening change amount is determined by the variable universe fuzzy control method. The opening of the first regulating valve in the first regulating device is controlled based on the first opening change amount.

[0088] (2) Based on the actual concentration and target concentration of the second purification target impurity, the second concentration deviation and the rate of change of the second concentration deviation are calculated. The second concentration deviation and the rate of change of the second concentration deviation are used as inputs. The second opening change is determined by the variable universe fuzzy control method. The opening of the second regulating valve in the second regulating device is controlled based on the second opening change.

[0089] (3) Based on the actual concentration and target concentration of the third purification target impurity, the third concentration deviation and the third concentration deviation change rate are calculated. Using the third concentration deviation and the third concentration deviation change rate as input, the third opening change amount is determined by the variable universe fuzzy control method, and the opening of the third regulating valve in the third regulating device is controlled based on the third opening change amount.

[0090] (4) Based on the actual temperature and the target temperature, the temperature deviation and the rate of change of temperature deviation are calculated. Using the temperature deviation and the rate of change of temperature deviation as inputs, the load change is determined by the variable universe fuzzy control method, and the load of the reheater in the reheating device is controlled based on the load change.

[0091] (5) Based on the actual concentration and target concentration of the fourth purification target impurity, the fourth concentration deviation and the fourth concentration deviation change rate are calculated. Using the fourth concentration deviation and the fourth concentration deviation change rate as input, the fourth opening change amount is determined by the variable universe fuzzy control method, and the opening of the fourth regulating valve in the fourth regulating device is controlled based on the fourth opening change amount.

[0092] (6) Based on the actual pressure and the target pressure, the pressure deviation and the rate of change of pressure deviation are calculated. Using the pressure deviation and the rate of change of pressure deviation as inputs, the speed change is determined by the variable universe fuzzy control method, and the speed of the compressor in the compression device is controlled based on the speed change.

[0093] This application also provides an application scenario in which the aforementioned aerospace helium recycling control method is applied. Specifically, the aerospace helium recycling control method provided in this embodiment can be applied in a helium reuse scenario. The helium reuse scenario includes a control phase and an operating phase. The control phase generates opening degree changes, load changes, and rotational speed changes, further generating control signals. The operating phase enables the aerospace helium recycling system to operate based on these control signals, obtaining purified helium for reuse, thus completing helium reuse. The aerospace helium recycling control method provided in this embodiment belongs to the control phase.

[0094] Example 3.

[0095] In one exemplary embodiment, a computer device is provided, which may be a server or a terminal, and its internal structure diagram may be as follows. Figure 4 As shown, this computer device includes a processor, memory, input / output (I / O) interfaces, and a communication interface. The processor, memory, and I / O interfaces are connected via a system bus, and the communication interface is also connected to the system bus via the I / O interfaces. The processor provides computational and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system, computer programs, and a database. The internal memory provides the environment for the operating system and computer programs stored in the non-volatile storage media. The database stores data. The I / O interfaces are used for exchanging information between the processor and external devices. The communication interface is used for communication with external terminals via a network connection. When executed by the processor, the computer program implements a space helium recycling control method.

[0096] Those skilled in the art will understand that Figure 4 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0097] In one exemplary embodiment, a computer device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the aerospace helium recycling control method of Embodiment 2.

[0098] Example 4.

[0099] In one exemplary embodiment, a computer-readable storage medium is provided storing a computer program that, when executed by a processor, implements the aerospace helium recycling control method of Embodiment 2.

[0100] Example 5.

[0101] In one exemplary embodiment, a computer program product is provided, including a computer program that, when executed by a processor, implements the aerospace helium recycling control method of Embodiment 2.

[0102] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties. Moreover, the collection, use and processing of the relevant data are carried out in compliance with the relevant data protection laws and policies of the country where the location is located, and with the authorization granted by the owner of the corresponding device.

[0103] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0104] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A space helium recycling control system for controlling a space helium recycling system, the space helium recycling system comprising a recovery device, an adsorption device, a cryogenic device, a reheating device, a dehydrogenation device, and a compression device connected in sequence, characterized in that, The aerospace helium recycling control system includes: a first detection device, a first adjustment device, a second detection device, a second adjustment device, a third detection device, a third adjustment device, a fourth detection device, a fourth adjustment device, and a control device; Both the first detection device and the first adjustment device are installed between the recovery device and the adsorption device. The first detection device is used to detect the actual concentration of the first purification target impurity in the aerospace helium output by the recovery device, and the first adjustment device is used to adjust the flow rate of the aerospace helium entering the adsorption device. The second detection device and the second adjustment device are both installed between the adsorption device and the cryogenic device. The second detection device is used to detect the actual concentration of the second purification target impurity in the aerospace helium gas output by the adsorption device, and the second adjustment device is used to adjust the flow rate of the aerospace helium gas entering the cryogenic device. The third detection device is installed between the cryogenic device and the rewarming device, and the third regulating device is installed between the rewarming device and the dehydrogenation device. The third detection device is used to detect the actual concentration of the third purification target impurity in the aerospace helium output by the cryogenic device and the actual temperature of the aerospace helium output by the cryogenic device. The third regulating device is used to regulate the flow rate of the aerospace helium entering the dehydrogenation device. The fourth detection device and the fourth adjustment device are both installed between the dehydrogenation device and the compression device. The fourth detection device is used to detect the actual concentration of the fourth purification target impurity in the aerospace helium output from the dehydrogenation device and the actual pressure of the aerospace helium output from the dehydrogenation device. The fourth adjustment device is used to adjust the flow rate of the aerospace helium entering the compression device. The control device is used to control the first regulating device based on the actual concentration of the first target impurity to be purified, the second regulating device based on the actual concentration of the second target impurity to be purified, the third regulating device based on the actual concentration of the third target impurity to be purified, the warming device based on the actual temperature, the fourth regulating device based on the actual concentration of the fourth target impurity to be purified, and the compression device based on the actual pressure.

2. The aerospace helium recycling control system according to claim 1, characterized in that, The recovery device is used to collect used aerospace helium; the actual concentration of the first purification target impurity includes the actual concentration of water, carbon dioxide, grease, nitrogen, oxygen and hydrogen; the first regulating device includes a first regulating valve, which is used to regulate the flow rate of aerospace helium entering the adsorption device; In controlling the first regulating device based on the actual concentration of the first purification target impurity, the control device is used to calculate the first concentration deviation and the first concentration deviation change rate based on the actual concentration and the target concentration of the first purification target impurity, use the first concentration deviation and the first concentration deviation change rate as input, use the variable universe of discourse fuzzy control method to determine the first opening change amount, and control the opening of the first regulating valve in the first regulating device based on the first opening change amount.

3. The aerospace helium recycling control system according to claim 1, characterized in that, The adsorption device is used to remove water, carbon dioxide, and grease from the aerospace helium output from the recovery device; the actual concentrations of the second purification target impurities include the actual concentrations of water, carbon dioxide, grease, nitrogen, and oxygen; the second regulating device includes a second regulating valve, which is used to regulate the flow rate of aerospace helium entering the cryogenic device. In terms of controlling the second regulating device based on the actual concentration of the second purification target impurity, the control device is used to calculate the second concentration deviation and the second concentration deviation change rate based on the actual concentration and the target concentration of the second purification target impurity. Using the second concentration deviation and the second concentration deviation change rate as input, the second opening change amount is determined by the variable universe fuzzy control method, and the opening of the second regulating valve in the second regulating device is controlled based on the second opening change amount.

4. The aerospace helium recycling control system according to claim 1, characterized in that, The cryogenic device is used to remove nitrogen and oxygen from the aerospace helium output by the adsorption device, and the warming device is used to adjust the temperature of the aerospace helium output by the cryogenic device to a preset temperature range; the actual concentration of the third purification target impurity includes the actual concentration of nitrogen, the actual concentration of oxygen and the actual concentration of hydrogen; the third regulating device includes a third regulating valve, which is used to regulate the flow rate of aerospace helium entering the dehydrogenation device. In terms of controlling the third regulating device based on the actual concentration of the third purification target impurity and controlling the reheating device based on the actual temperature, the control device is used to calculate the third concentration deviation and the third concentration deviation change rate based on the actual concentration and target concentration of the third purification target impurity. Using the third concentration deviation and the third concentration deviation change rate as input, the variable universe fuzzy control method is used to determine the third opening change amount, and the opening of the third regulating valve in the third regulating device is controlled based on the third opening change amount. Based on the actual temperature and the target temperature, the temperature deviation and the rate of change of temperature deviation are calculated. Using the temperature deviation and the rate of change of temperature deviation as inputs, the load change is determined by the variable universe of discourse fuzzy control method, and the load of the reheater in the reheating device is controlled based on the load change.

5. The aerospace helium recycling control system according to claim 1, characterized in that, The dehydrogenation device is used to remove hydrogen from the aerospace helium output by the reheating device, and the compression device is used to compress the aerospace helium output by the dehydrogenation device; the actual concentration of the fourth purification target impurity includes the actual concentration of hydrogen; the fourth regulating device includes a fourth regulating valve, which is used to regulate the flow rate of aerospace helium entering the compression device. In controlling the fourth regulating device based on the actual concentration of the fourth purification target impurity, and controlling the compression device based on the actual pressure, the control device calculates the fourth concentration deviation and the fourth concentration deviation change rate based on the actual and target concentrations of the fourth purification target impurity. Using the fourth concentration deviation and the fourth concentration deviation change rate as inputs, a variable universe of discourse fuzzy control method is used to determine the fourth opening change, and the opening of the fourth regulating valve in the fourth regulating device is controlled based on the fourth opening change. Similarly, based on the actual and target pressures, the pressure deviation and the pressure deviation change rate are calculated. Using the pressure deviation and the pressure deviation change rate as inputs, a variable universe of discourse fuzzy control method is used to determine the speed change, and the speed of the compressor in the compression device is controlled based on the speed change.

6. The aerospace helium recycling control system according to claim 1, characterized in that, The first detection device includes a first concentration sensor, which is used to detect the actual concentration of the first purified target impurity in the aerospace helium gas output by the recovery device; The second detection device includes a second concentration sensor, which is used to detect the actual concentration of the second purification target impurity in the aerospace helium gas output by the adsorption device. The third detection device includes a third concentration sensor and a temperature sensor. The third concentration sensor is used to detect the actual concentration of the third purification target impurity in the aerospace helium output by the cryogenic device, and the temperature sensor is used to detect the actual temperature of the aerospace helium output by the cryogenic device. The fourth detection device includes a fourth concentration sensor and a pressure sensor. The fourth concentration sensor is used to detect the actual concentration of the fourth purification target impurity in the aerospace helium output from the dehydrogenation unit, and the pressure sensor is used to detect the actual pressure of the aerospace helium output from the dehydrogenation unit.

7. The aerospace helium recycling control system according to claim 6, characterized in that, The first detection device also includes a first flow sensor, which is used to detect the actual flow rate of the aerospace helium output by the recovery device; The second detection device also includes a second flow sensor, which is used to detect the actual flow rate of aerospace helium output by the adsorption device; The third detection device also includes a third flow sensor, which is used to detect the actual flow rate of aerospace helium output by the cryogenic device; The fourth detection device also includes a fourth flow sensor, which is used to detect the actual flow rate of aerospace helium output from the dehydrogenation unit.

8. A control method for the recycling of aerospace helium, operating based on the aerospace helium recycling control system according to any one of claims 1-7, characterized in that, The space helium recycling control method includes: The actual concentration of the first purification target impurity in the aerospace helium output by the recovery device, the actual concentration of the second purification target impurity in the aerospace helium output by the adsorption device, the actual concentration of the third purification target impurity in the aerospace helium output by the cryogenic device, the actual temperature of the aerospace helium output by the cryogenic device, the actual concentration of the fourth purification target impurity in the aerospace helium output by the dehydrogenation device, and the actual pressure of the aerospace helium output by the dehydrogenation device are obtained. The first regulating device is controlled based on the actual concentration of the first target impurity for purification; the second regulating device is controlled based on the actual concentration of the second target impurity for purification; the third regulating device is controlled based on the actual concentration of the third target impurity for purification; the temperature recovery device is controlled based on the actual temperature; the fourth regulating device is controlled based on the actual concentration of the fourth target impurity for purification; and the compression device is controlled based on the actual pressure.

9. The aerospace helium recycling control method according to claim 8, characterized in that, The system controls the first regulating device based on the actual concentration of the first target impurity, the second regulating device based on the actual concentration of the second target impurity, the third regulating device based on the actual concentration of the third target impurity, the temperature recovery device based on the actual temperature, the fourth regulating device based on the actual concentration of the fourth target impurity, and the compression device based on the actual pressure. Specifically, this includes: Based on the actual concentration and target concentration of the first purification target impurity, the first concentration deviation and the first concentration deviation change rate are calculated. Using the first concentration deviation and the first concentration deviation change rate as input, the first opening change amount is determined by the variable universe of discourse fuzzy control method, and the opening of the first regulating valve in the first regulating device is controlled based on the first opening change amount. Based on the actual concentration and target concentration of the second purification target impurity, the second concentration deviation and the rate of change of the second concentration deviation are calculated. Using the second concentration deviation and the rate of change of the second concentration deviation as input, the variable universe of discourse fuzzy control method is used to determine the second opening change, and the opening of the second regulating valve in the second regulating device is controlled based on the second opening change. Based on the actual concentration and target concentration of the third purification target impurity, the third concentration deviation and the rate of change of the third concentration deviation are calculated. Using the third concentration deviation and the rate of change of the third concentration deviation as inputs, the variable universe of discourse fuzzy control method is used to determine the change in the third opening, and the opening of the third regulating valve in the third regulating device is controlled based on the change in the third opening. Based on the actual temperature and the target temperature, the temperature deviation and the rate of change of temperature deviation are calculated. Using the temperature deviation and the rate of change of temperature deviation as inputs, the load change is determined by the variable universe fuzzy control method, and the load of the reheater in the reheating device is controlled based on the load change. Based on the actual concentration and target concentration of the fourth purification target impurity, the fourth concentration deviation and the rate of change of the fourth concentration deviation are calculated. Using the fourth concentration deviation and the rate of change of the fourth concentration deviation as inputs, the variable universe of discourse fuzzy control method is used to determine the change in the fourth opening, and the opening of the fourth regulating valve in the fourth regulating device is controlled based on the change in the fourth opening. Based on the actual pressure and the target pressure, the pressure deviation and the rate of change of pressure deviation are calculated. Using the pressure deviation and the rate of change of pressure deviation as inputs, the variable universe of discourse fuzzy control method is used to determine the speed change, and the speed of the compressor in the compression device is controlled based on the speed change.

10. A computer device, comprising: A memory, a processor, and a computer program stored in the memory and capable of running on the processor, characterized in that the processor executes the computer program to implement the aerospace helium recycling control method according to any one of claims 8-9.

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