Helium recycling control method and related device

Abstract

The application discloses a helium recycling control method and related device, relates to the field of helium recycling control, and comprises the following steps: determining the target opening degree of an air inlet adjusting valve of an adsorption device, a low-temperature device and a dehydrogenation device and the target rotating speed of a compressor according to the deviation between the measured value of the impurity concentration at the outlet of the adsorption device, the outlet of the low-temperature device and the outlet of the dehydrogenation device and the target value of the gas pressure at the outlet of the dehydrogenation device, and then performing a helium multistage purification process according to the target opening degree of each air inlet adjusting valve and the target rotating speed of the compressor. The application can adjust the opening degree of the air inlet adjusting valve of the adsorption device, the low-temperature device and the dehydrogenation device and the rotating speed of the compressor according to the purification target gas conditions such as the impurity concentration, temperature and pressure of helium under different working conditions, so that each stage of purification can achieve optimal purification effect and purification demand.

Description

Technical Field

[0001] This application relates to the field of helium recycling control, and in particular to a helium recycling control method and related apparatus. Background Technology

[0002] Helium, as a precious and rare gas, is widely used in modern rockets and space launches. Its uses include: 1) as an energy source for operating various pneumatic valves and components (cryogenic valves in liquid hydrogen tanks should use helium); 2) as a purification and replacement gas for liquid propellant filling systems (helium purging in liquid hydrogen refueling systems); 3) pressurizing and purging rocket fuel tanks (hydrogen tank purging and pressurization); and 4) cleaning rocket engine systems (using nitrogen or helium as needed).

[0003] Currently, launch sites consume a significant amount of helium. Taking a certain type of rocket as an example, a single launch mission consumes approximately 3,600 standard cubic meters of helium. Therefore, improving the recovery, purification, and reuse of helium is of great strategic importance for conserving helium resources and reducing operating costs. Summary of the Invention

[0004] The purpose of this application is to provide a helium recycling control method and related device, which can adjust the opening degree of the inlet regulating valve and the speed of the compressor of the adsorption device, the cryogenic device and the dehydrogenation device according to the purification target gas conditions such as different impurity concentrations, temperature and pressure in helium under different working conditions, so that each stage of purification can achieve the optimal purification effect and purification requirements.

[0005] To achieve the above objectives, this application provides the following solution: In a first aspect, this application provides a helium recycling control method, comprising: Obtain the measured values ​​of the first impurity concentration at the outlet of the adsorption unit, the second impurity concentration at the outlet of the cryogenic unit, the third impurity concentration at the outlet of the dehydrogenation unit, and the gas pressure. The target opening degree of the air intake regulating valve of the adsorption device is determined based on the deviation between the upper limit value of the first impurity concentration and the measured value of the first impurity concentration at the outlet of the adsorption device. The target opening degree of the inlet regulating valve of the cryogenic device is determined based on the deviation between the upper limit of the second impurity concentration and the measured value of the second impurity concentration at the outlet of the cryogenic device. The target opening degree of the inlet regulating valve of the dehydrogenation unit is determined based on the deviation between the upper limit of the third impurity concentration and the measured value of the third impurity concentration at the outlet of the dehydrogenation unit. The target speed of the compressor is determined based on the deviation between the target gas pressure value and the measured gas pressure value at the outlet of the dehydrogenation unit. The helium multi-stage purification process is executed according to the target opening degree of the inlet regulating valve of the adsorption unit, the target opening degree of the inlet regulating valve of the cryogenic unit, the target opening degree of the inlet regulating valve of the dehydrogenation unit, and the target speed of the compressor.

[0006] Secondly, this application provides a helium recycling control system, comprising: The first adjustment module is used to determine the target opening of the air inlet adjustment valve of the adsorption device based on the deviation between the upper limit of the first impurity concentration and the measured value of the first impurity concentration at the outlet of the adsorption device. The second adjustment module is used to determine the target opening of the inlet regulating valve of the cryogenic device based on the deviation between the upper limit of the second impurity concentration and the measured value of the second impurity concentration at the outlet of the cryogenic device. The third adjustment module is used to determine the target opening of the gas inlet regulating valve of the dehydrogenation unit based on the deviation between the upper limit of the third impurity concentration and the measured value of the third impurity concentration at the outlet of the dehydrogenation unit. The fourth adjustment module is used to determine the target speed of the compressor based on the deviation between the target gas pressure value and the measured gas pressure value at the outlet of the dehydrogenation unit; The execution module is used to perform a multi-stage helium purification process according to the target opening degree of the inlet regulating valve of the adsorption unit, the target opening degree of the inlet regulating valve of the cryogenic unit, the target opening degree of the inlet regulating valve of the dehydrogenation unit, and the target speed of the compressor.

[0007] Thirdly, this application provides a helium recycling control device, including: a control unit, an adsorption device, a cryogenic device, a reheater, a dehydrogenation device, and a compressor that are communicatively connected to the control unit; The adsorption unit, cryogenic unit, dehydrogenation unit, and compressor are connected sequentially via pipelines along the gas inlet direction; The reheater is located between the cryogenic unit and the dehydrogenation unit; The outlet and inlet of the adsorption unit, the outlet and inlet of the cryogenic unit, the outlet and inlet of the dehydrogenation unit, and the outlet and inlet of the reheater are also connected by a return gas pipeline. The inlet of the adsorption unit, the inlet of the cryogenic unit, and the inlet of the dehydrogenation unit are all equipped with inlet regulating valves; The outlets of the adsorption unit, the cryogenic unit, and the dehydrogenation unit are all equipped with corresponding impurity concentration sensors; the outlet of the cryogenic unit is also equipped with a temperature sensor; and the outlet of the dehydrogenation unit is also equipped with a pressure sensor. The intake regulating valve, impurity concentration sensor, temperature sensor, and pressure sensor are all connected in communication with the control unit; The control unit is used to execute the above-mentioned helium recycling control method to regulate the opening degree of the inlet regulating valves at the inlet of the adsorption unit, the inlet of the cryogenic unit, and the inlet of the dehydrogenation unit, the load of the regenerator, and the speed of the compressor.

[0008] Fourthly, 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 helium recycling control method.

[0009] Fifthly, this application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the above-described helium recycling control method.

[0010] According to the specific embodiments provided in this application, this application has the following technical effects: This application provides a helium recycling control method and related apparatus. The method includes: determining the target opening degree of the inlet regulating valves and the target rotation speed of the compressor for the adsorption unit, cryogenic unit, and dehydrogenation unit based on the deviations between the measured values ​​of impurity concentrations at the outlet of the adsorption unit, cryogenic unit, and dehydrogenation unit, and the measured value of gas pressure at the outlet of the dehydrogenation unit, and their respective target values; and then executing a multi-stage helium purification process according to the target opening degree of each inlet regulating valve and the target rotation speed of the compressor. This application can adjust the opening degree of the inlet regulating valves and the rotation speed of the compressor for the adsorption unit, cryogenic unit, and dehydrogenation unit according to the purification target gas conditions such as different impurity concentrations, temperatures, and pressures in the helium under different operating conditions, until their respective target values ​​(optimal values) are reached, so that each stage of purification can achieve optimal purification effect and purification requirements. 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 an application environment diagram of a helium recycling control method according to an embodiment of this application; Figure 2 A schematic flowchart of a helium recycling control method provided in an embodiment of this application; Figure 3 A schematic diagram illustrating the technical concept of a helium recycling control method according to an embodiment of this application; Figure 4 This is a schematic diagram of the functional modules of a helium recycling control system provided in an embodiment of this application; Figure 5 This is a schematic diagram of the structure of a helium recycling control device provided in an embodiment of this application; Figure 6 This is a schematic diagram of the structure of a computer device provided in an embodiment of this application. Detailed Implementation

[0013] 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.

[0014] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0015] The helium recycling control method provided in this application can be applied to, for example... Figure 1 In the application environment shown, terminal 102 communicates with server 104 via a network. A data storage system can store the data that server 104 needs to process. The data storage system can be set up independently, integrated into server 104, or placed in the cloud or on another server. Terminal 102 can send the measured values ​​of the first impurity concentration at the outlet of the adsorption unit, the second impurity concentration at the outlet of the cryogenic unit, the third impurity concentration at the outlet of the dehydrogenation unit, and the gas pressure to server 104. After receiving the data, server 104 determines the target opening degree of the inlet regulating valve of the adsorption unit based on the deviation between the upper limit of the first impurity concentration and the measured value of the first impurity concentration at the outlet of the adsorption unit; determines the target opening degree of the inlet regulating valve of the cryogenic unit based on the deviation between the upper limit of the second impurity concentration and the measured value of the second impurity concentration at the outlet of the cryogenic unit; determines the target opening degree of the inlet regulating valve of the dehydrogenation unit based on the deviation between the upper limit of the third impurity concentration and the measured value of the third impurity concentration at the outlet of the dehydrogenation unit; and determines the target speed of the compressor based on the deviation between the target gas pressure and the measured value of the gas pressure at the outlet of the dehydrogenation unit. Server 104 can feed back the target opening degrees of the inlet regulating valves of the adsorption unit, the cryogenic unit, and the dehydrogenation unit to terminal 102. This allows for the execution of a multi-stage helium purification process according to these target opening degrees.

[0016] Server 104 can be implemented using a standalone server, a server cluster consisting of multiple servers, or a cloud server.

[0017] In one exemplary embodiment, such as Figure 2 and Figure 3 As shown, a helium recycling control method is provided. This method is executed by a computer device, specifically by a terminal or server alone, or by both a terminal and a server. In this embodiment, the method is applied to... Figure 1 Taking server 104 as an example, the explanation includes the following steps 201 to 206. Wherein: Step 201: Obtain the measured values ​​of the first impurity concentration at the outlet of the adsorption device, the second impurity concentration at the outlet of the cryogenic device, the third impurity concentration at the outlet of the dehydrogenation device, and the gas pressure.

[0018] Step 202: Determine the target opening degree of the air intake regulating valve of the adsorption device based on the deviation between the upper limit of the first impurity concentration and the measured value of the first impurity concentration at the outlet of the adsorption device.

[0019] Step 203: Determine the target opening degree of the intake regulating valve of the cryogenic device based on the deviation between the upper limit of the second impurity concentration and the measured value of the second impurity concentration at the outlet of the cryogenic device.

[0020] Step 204: Determine the target opening degree of the inlet regulating valve of the dehydrogenation unit based on the deviation between the upper limit of the third impurity concentration and the measured value of the third impurity concentration at the outlet of the dehydrogenation unit.

[0021] Step 205: Determine the target speed of the compressor based on the deviation between the target gas pressure value and the measured gas pressure value at the outlet of the dehydrogenation unit.

[0022] Step 206: Perform a multi-stage helium purification process according to the target opening degree of the inlet regulating valve of the adsorption unit, the target opening degree of the inlet regulating valve of the cryogenic unit, the target opening degree of the inlet regulating valve of the dehydrogenation unit, and the target speed of the compressor.

[0023] By implementing steps 201 to 206 above, in the initial stage of helium purification, the opening degree of the inlet regulating valve of the adsorption device, the cryogenic device, and the dehydrogenation device and the speed of the compressor can be adjusted according to the purification target gas conditions such as different impurity concentrations, temperatures, and pressures in the helium under different operating conditions until the corresponding target values ​​are reached. When the subsequent continuous purification process is carried out based on the adjusted valve opening target value and speed target value, the purification treatment at each level can achieve the optimal purification effect and purification requirements.

[0024] In another exemplary embodiment of this application, in step 202, the impurity concentration calibration MAP1 (impurities are: H2O, CO2, and grease) is first read, and the opening of the inlet regulating valve of the adsorption device is adjusted so that the raw helium gas enters the adsorption device from the initial helium gas collecting bottle for primary purification (filtering H2O, CO2, and grease). Then, the concentrations R of H2O, CO2, and grease are detected at the outlet of the adsorption device.e1 And compare with the upper limit value R ed1 (i.e., impurity concentration calibration MAP1), when the impurity concentration R e1 >R ed1 At this time, helium is returned, the impurity concentration is reread and MAP1 is calibrated, and the adsorption cycle process begins. When R e1 <R ed1 At this time, the current impurity concentration calibration MAP2 (impurities are: N2, O2) is read, and the opening of the inlet regulating valve of the cryogenic device is adjusted to allow helium to enter the cryogenic device (filtering N2 and O2). Based on the above, in step 202, the target opening of the inlet regulating valve of the adsorption device is determined according to the deviation between the upper limit of the first impurity concentration (i.e., the impurity concentration calibration MAP1) and the measured value of the first impurity concentration at the outlet of the adsorption device, specifically including: (a1) Based on the upper limit of the first impurity concentration (impurity concentration calibration MAP1: R) ed1 Adjust the air intake regulating valve of the adsorption device to the initial opening degree.

[0025] (a2) Obtain the measured value R of the first impurity concentration at the outlet of the adsorption device. e1 .

[0026] (a3) Determine whether the measured value of the first impurity concentration at the outlet of the adsorption device is less than the upper limit value R of the first impurity concentration. ed1 .

[0027] (a4) If not, the return gas pipeline of the adsorption device is opened to continue the adsorption treatment of the currently adsorbed helium, and the current opening degree of the inlet regulating valve of the adsorption device is adjusted according to the deviation between the upper limit of the first impurity concentration and the measured value of the first impurity concentration, and the process returns to the step "obtain the measured value of the first impurity concentration at the outlet of the adsorption device".

[0028] (a5) If so, the current opening of the inlet regulating valve of the adsorption device shall be regarded as the target opening of the inlet regulating valve of the adsorption device, and the valve of the return gas pipeline of the adsorption device shall be closed.

[0029] In another exemplary embodiment of this application, in step 203, when there is no requirement for helium temperature during the purification process, the concentrations R of N2 and O2 are detected at the outlet of the cryogenic device. e2 Compare with the upper limit value R ed2 (i.e., impurity concentration calibration MAP2) When R e2 >R ed2 At this time, helium is returned, the impurity concentration is re-read to calibrate MAP2, and the cryogenic cycle process begins. When R e2 <R ed2At this time, helium enters the dehydrogenation unit, and the impurity concentration calibration MAP3 (impurity is H2) is read. The opening of the inlet regulating valve of the dehydrogenation unit is adjusted to allow helium to enter the dehydrogenation unit (filtering H2). Based on the above, in step 203, the target opening of the inlet regulating valve of the cryogenic unit is determined according to the deviation between the upper limit of the second impurity concentration and the measured value of the second impurity concentration at the outlet of the cryogenic unit. Specifically, this includes: (b1) Adjust the intake regulating valve of the cryogenic device to the initial opening degree according to the upper limit of the second impurity concentration.

[0030] (b2) Obtain the measured value of the second impurity concentration at the outlet of the cryogenic device.

[0031] (b3) Determine whether the measured value of the second impurity concentration at the outlet of the cryogenic device is less than the upper limit value of the second impurity concentration.

[0032] (b4) If not, the return gas pipeline of the cryogenic device is opened to continue the cryogenic treatment of the currently adsorbed helium, and the current opening degree of the inlet regulating valve of the cryogenic device is adjusted according to the deviation between the upper limit of the second impurity concentration and the measured value of the second impurity concentration, and the process returns to the step "obtain the measured value of the second impurity concentration at the outlet of the cryogenic device".

[0033] (b5) If so, the current opening of the inlet regulating valve of the cryogenic unit shall be regarded as the target opening of the inlet regulating valve of the cryogenic unit, and the valve of the return gas line of the cryogenic unit shall be closed.

[0034] In another exemplary embodiment of this application, when there is a requirement for helium temperature during the purification process, the concentrations R of N2 and O2 are detected at the outlet of the cryogenic device. e2 And the helium temperature, compared with the upper limit value R of impurity concentration. ed2 When R e2 >R ed2 At this time, helium is returned, the impurity concentration is re-read to calibrate MAP2, and the cryogenic cycle process begins. When R e2 <R ed2 And T e <T min Or T > T max At that time, helium gas enters the reheater, the gas temperature calibration MAP is read, the reheater load is adjusted, and the reheating cycle process begins. When R... e2 <R ed2 And T min <T e <T max At this time, the current impurity concentration calibration MAP3 (impurity is H2) is read, and the opening of the inlet regulating valve of the dehydrogenation unit is adjusted to allow helium to enter the dehydrogenation unit (filtering H2). Based on the above, the helium recycling control method further includes: (c1) Obtain the target range of gas temperature at the outlet of the cryogenic device and the measured value of gas temperature at the outlet of the cryogenic device.

[0035] (c2) Determine whether the measured gas temperature at the outlet of the cryogenic device is within the target range of gas temperature.

[0036] (c3) If not, adjust the load of the regenerator according to the deviation between the measured gas temperature at the outlet of the cryogenic device and the target range of gas temperature, read the measured gas temperature at the outlet of the regenerator, and determine whether the measured gas temperature at the outlet of the regenerator is within the target range of gas temperature; if yes, take the current load of the regenerator as the target load of the regenerator; if not, open the valve of the return gas pipeline of the regenerator, adjust the load of the regenerator according to the deviation between the measured gas temperature at the outlet of the regenerator and the target range of gas temperature, and return to the step "read the measured gas temperature at the outlet of the regenerator".

[0037] In another exemplary embodiment of this application, in step 204, the concentration of H2 and the helium pressure are detected at the outlet of the dehydrogenation unit and compared with the upper limit value R of the concentration. ed3 (Impurity concentration calibration MAP3), when R e3 >R ed3 At this time, helium is returned, the impurity concentration is reread and MAP3 is calibrated, and the dehydrogenation cycle process begins. When R e3 <R ed3 At this time, the current gas pressure calibration MAP (target gas pressure value) is read, the speed of the membrane compressor is adjusted, helium enters the membrane compressor, and after compression, it flows out from the outlet into the helium recovery tank. Based on the above, in step 204, the target opening degree of the inlet regulating valve of the dehydrogenation unit is determined according to the deviation between the upper limit of the third impurity concentration and the measured value of the third impurity concentration at the outlet of the dehydrogenation unit, specifically including: (d1) Adjust the inlet regulating valve of the dehydrogenation unit to the initial opening degree according to the upper limit of the third impurity concentration.

[0038] (d2) Obtain the measured value of the third impurity concentration at the outlet of the dehydrogenation unit.

[0039] (d3) Determine whether the measured value of the third impurity concentration at the outlet of the dehydrogenation unit is less than the upper limit value of the third impurity concentration.

[0040] (d4) If not, open the return gas pipeline of the dehydrogenation unit to continue the dehydrogenation treatment of the currently adsorbed helium, and adjust the current opening of the inlet regulating valve of the dehydrogenation unit according to the deviation between the upper limit of the third impurity concentration and the measured value of the third impurity concentration, and return to the step "obtain the measured value of the third impurity concentration at the outlet of the dehydrogenation unit".

[0041] (d5) If so, the current opening of the inlet regulating valve of the dehydrogenation unit shall be regarded as the target opening of the inlet regulating valve of the dehydrogenation unit, and the valve of the return gas pipeline of the dehydrogenation unit shall be closed.

[0042] In another exemplary embodiment of this application, the above process involves regulating the target values ​​of the opening degree of the intake regulating valves, the regenerator load, and the compressor speed at each stage during the initial purification phase. As the purification process continues, it is also necessary to monitor the actual results of each stage of purification and fine-tune the target values ​​of the opening degree of the intake regulating valves, the regenerator load, and the compressor speed at each stage. Therefore, the helium recycling control method further includes: (e1) During the multi-stage purification of helium, the measured values ​​of the first impurity concentration at the outlet of the adsorption unit, the second impurity concentration at the outlet of the cryogenic unit, the gas temperature, the third impurity concentration at the outlet of the dehydrogenation unit, and the gas pressure are obtained at intervals according to the target opening degree of the inlet regulating valve of the adsorption unit, the target opening degree of the inlet regulating valve of the cryogenic unit, the target load of the regenerator, the target opening degree of the inlet regulating valve of the dehydrogenation unit, and the target speed of the compressor.

[0043] (e2) Based on the deviations between the measured values ​​of the first impurity concentration at the outlet of the adsorption unit, the second impurity concentration at the outlet of the cryogenic unit, the gas temperature, the third impurity concentration at the outlet of the dehydrogenation unit, and the gas pressure and their respective target values, fine-tune the target opening of the inlet regulating valve of the adsorption unit, the target opening of the inlet regulating valve of the cryogenic unit, the target load of the regenerator, the target opening of the inlet regulating valve of the dehydrogenation unit, and the target speed of the compressor.

[0044] This application utilizes a variable domain fuzzy controller (control unit) to convert electrical signals into analog signals by feeding back the deviation in the concentration of the target impurities. This controller then controls the actuators for the intake regulating valve opening, the recirculator load regulation, and the compressor speed, adjusting the helium flow rate at each purification stage. Ultimately, this achieves optimal control of the total helium flow rate, the flow rate of each sub-cycle, the recirculator temperature, and the diaphragm compressor speed. This reduces energy loss during helium recycling, improves efficiency and accuracy, and enables real-time optimal control of purification intensity under different operating conditions (and varying helium purity requirements) during aerospace helium recycling. This effectively improves system stability, enables continuous production and on-demand purification, enhances the recovery speed and purification efficiency of helium recycling, reduces resource waste, and provides technical support for significantly enhancing future aerospace launch mission support capabilities.

[0045] Based on the same inventive concept, this application also provides a helium recycling control system for implementing the helium recycling control method described above. The solution provided by this device is similar to the solution described in the above method; therefore, the specific limitations of one or more helium recycling control system embodiments provided below can be found in the limitations of the helium recycling control method described above, and will not be repeated here.

[0046] In one exemplary embodiment, such as Figure 4 As shown, a helium recycling control system is provided, comprising: The data acquisition module M1 is used to acquire the measured values ​​of the first impurity concentration at the outlet of the adsorption unit, the second impurity concentration at the outlet of the cryogenic unit, the third impurity concentration at the outlet of the dehydrogenation unit, and the gas pressure.

[0047] The first adjustment module M2 is used to determine the target opening of the air intake adjustment valve of the adsorption device based on the deviation between the upper limit of the first impurity concentration and the measured value of the first impurity concentration at the outlet of the adsorption device. The second adjustment module M3 is used to determine the target opening of the inlet regulating valve of the cryogenic device based on the deviation between the upper limit of the second impurity concentration and the measured value of the second impurity concentration at the outlet of the cryogenic device. The third adjustment module M4 is used to determine the target opening of the gas inlet regulating valve of the dehydrogenation unit based on the deviation between the upper limit of the third impurity concentration and the measured value of the third impurity concentration at the outlet of the dehydrogenation unit. The fourth adjustment module M5 is used to determine the target speed of the compressor based on the deviation between the target gas pressure value and the measured gas pressure value at the outlet of the dehydrogenation unit; The execution module M6 is used to execute the multi-stage helium purification process according to the target opening degree of the inlet regulating valve of the adsorption unit, the target opening degree of the inlet regulating valve of the cryogenic unit, the target opening degree of the inlet regulating valve of the dehydrogenation unit, and the target speed of the compressor.

[0048] In one exemplary embodiment, such as Figure 5 As shown, a helium recycling control device is provided, including: a control unit, an adsorption device, a cryogenic device, a reheater, a dehydrogenation device, and a compressor (such as a membrane compressor) that are communicatively connected to the control unit.

[0049] The adsorption unit, cryogenic unit, dehydrogenation unit, and compressor are connected sequentially via pipelines along the gas inlet direction.

[0050] The reheater is located between the cryogenic unit and the dehydrogenation unit.

[0051] The outlet and inlet of the adsorption unit, the outlet and inlet of the cryogenic unit, the outlet and inlet of the dehydrogenation unit, and the outlet and inlet of the reheater are also connected by a return gas pipeline.

[0052] The inlet of the adsorption unit, the inlet of the cryogenic unit, and the inlet of the dehydrogenation unit are all equipped with inlet regulating valves; The outlets of the adsorption unit, the cryogenic unit, and the dehydrogenation unit are all equipped with corresponding impurity concentration sensors; the outlet of the cryogenic unit is also equipped with a temperature sensor; and the outlet of the dehydrogenation unit is also equipped with a pressure sensor.

[0053] The intake regulating valve, impurity concentration sensor, temperature sensor, and pressure sensor are all connected to the control unit.

[0054] The control unit is used to execute the above-mentioned helium recycling control method to regulate the opening degree of the inlet regulating valves at the inlet of the adsorption unit, the inlet of the cryogenic unit, and the inlet of the dehydrogenation unit, the load of the regenerator, and the speed of the compressor.

[0055] The reheater is electrically driven, and the membrane compressor is driven by an electric motor. Helium flow sensors are also installed on the inlet side pipelines of the adsorption unit, cryogenic unit, and dehydrogenation unit.

[0056] H2O, CO2, and oil concentration sensors are installed at the outlet of the adsorption unit; N2 and O2 concentration sensors are installed at the outlets of the adsorption unit and the cryogenic unit; and H2 concentration sensors are installed at the outlets of the cryogenic unit and the dehydrogenation unit. A temperature sensor is installed at the outlet of the cryogenic unit, and a pressure sensor is installed at the outlet of the dehydrogenation unit. This application also detects N2 and O2 concentrations at the outlet of the adsorption unit and adjusts the flow rate of the helium gas to be purified entering the cryogenic unit according to different N2 and O2 concentrations. Similarly, it detects H2 concentrations at the outlet of the cryogenic unit and adjusts the flow rate of the helium gas to be purified entering the dehydrogenation unit according to different H2 concentrations. This allows for precise adjustment of purification capacity, improved purification accuracy, and reduced resource waste.

[0057] 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 6As shown, this computer device includes a processor, memory, input / output interfaces (I / O), 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 operation of the operating system and computer programs stored in the non-volatile storage media. The database stores data related to helium recycling control. The I / O interfaces are used for information exchange between the processor and external devices. The communication interface is used for communication with external terminals via a network connection. When the computer program is executed by the processor, it implements a helium recycling control method.

[0058] Those skilled in the art will understand that Figure 6 The structures shown are merely block diagrams of some structures related to the present application and do 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 shown in the figures, or combine certain components, or have different component arrangements. In an exemplary embodiment, a computer device is provided, including a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the steps in the above-described method embodiments.

[0059] In one exemplary embodiment, a computer-readable storage medium is provided storing a computer program that, when executed by a processor, implements the steps in the above-described method embodiments.

[0060] In one exemplary embodiment, a computer program product is provided, including a computer program that, when executed by a processor, implements the steps in the above-described method embodiments.

[0061] 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.

[0062] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments described above. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM).

[0063] The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.

[0064] 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.

[0065] 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 helium recycling control method, characterized in that, include: Obtain the measured values ​​of the first impurity concentration at the outlet of the adsorption unit, the second impurity concentration at the outlet of the cryogenic unit, the third impurity concentration at the outlet of the dehydrogenation unit, and the gas pressure. The target opening degree of the air intake regulating valve of the adsorption device is determined based on the deviation between the upper limit value of the first impurity concentration and the measured value of the first impurity concentration at the outlet of the adsorption device. The target opening degree of the inlet regulating valve of the cryogenic device is determined based on the deviation between the upper limit of the second impurity concentration and the measured value of the second impurity concentration at the outlet of the cryogenic device. The target opening degree of the inlet regulating valve of the dehydrogenation unit is determined based on the deviation between the upper limit of the third impurity concentration and the measured value of the third impurity concentration at the outlet of the dehydrogenation unit. The target speed of the compressor is determined based on the deviation between the target gas pressure value and the measured gas pressure value at the outlet of the dehydrogenation unit. The helium multi-stage purification process is executed according to the target opening degree of the inlet regulating valve of the adsorption unit, the target opening degree of the inlet regulating valve of the cryogenic unit, the target opening degree of the inlet regulating valve of the dehydrogenation unit, and the target speed of the compressor.

2. The helium recycling control method according to claim 1, characterized in that, The target opening degree of the inlet regulating valve of the adsorption unit is determined based on the deviation between the upper limit of the first impurity concentration and the measured value of the first impurity concentration at the outlet of the adsorption unit. Specifically, this includes: Adjust the air intake regulating valve of the adsorption device to the initial opening degree according to the upper limit value of the first impurity concentration; Obtain the measured value of the first impurity concentration at the outlet of the adsorption device; Determine whether the measured value of the first impurity concentration at the outlet of the adsorption device is less than the upper limit value of the first impurity concentration; If not, the return gas pipeline of the adsorption device is opened to continue the adsorption treatment of the currently adsorbed helium, and the current opening degree of the inlet regulating valve of the adsorption device is adjusted according to the deviation between the upper limit value of the first impurity concentration and the measured value of the first impurity concentration, and the process returns to the step "obtain the measured value of the first impurity concentration at the outlet of the adsorption device". If so, the current opening degree of the air intake regulating valve of the adsorption device is regarded as the target opening degree of the air intake regulating valve of the adsorption device, and the valve of the return gas pipeline of the adsorption device is closed.

3. The helium recycling control method according to claim 1, characterized in that, The target opening degree of the inlet regulating valve of the cryogenic unit is determined based on the deviation between the upper limit of the second impurity concentration and the measured value of the second impurity concentration at the outlet of the cryogenic unit. Specifically, this includes: Adjust the inlet regulating valve of the cryogenic device to its initial opening degree according to the upper limit value of the second impurity concentration; Obtain the measured value of the second impurity concentration at the outlet of the cryogenic device; Determine whether the measured value of the second impurity concentration at the outlet of the cryogenic device is less than the upper limit value of the second impurity concentration; If not, the return gas pipeline of the cryogenic device is opened to continue the cryogenic treatment of the currently adsorbed helium, and the current opening degree of the inlet regulating valve of the cryogenic device is adjusted according to the deviation between the upper limit of the second impurity concentration and the measured value of the second impurity concentration, and the process returns to the step "obtain the measured value of the second impurity concentration at the outlet of the cryogenic device". If so, the current opening degree of the inlet regulating valve of the cryogenic device is regarded as the target opening degree of the inlet regulating valve of the cryogenic device, and the valve of the return gas pipeline of the cryogenic device is closed.

4. The helium recycling control method according to claim 1, characterized in that, The target opening degree of the inlet regulating valve of the dehydrogenation unit is determined based on the deviation between the upper limit of the third impurity concentration and the measured value of the third impurity concentration at the outlet of the dehydrogenation unit. Specifically, this includes: Adjust the inlet regulating valve of the dehydrogenation unit to its initial opening degree according to the upper limit value of the third impurity concentration; Obtain the measured value of the third impurity concentration at the outlet of the dehydrogenation unit; Determine whether the measured value of the third impurity concentration at the outlet of the dehydrogenation unit is less than the upper limit value of the third impurity concentration; If not, the return gas pipeline of the dehydrogenation unit is opened to continue the dehydrogenation treatment of the currently adsorbed helium, and the current opening degree of the inlet regulating valve of the dehydrogenation unit is adjusted according to the deviation between the upper limit value of the third impurity concentration and the measured value of the third impurity concentration. Then, the process returns to the step "obtain the measured value of the third impurity concentration at the outlet of the dehydrogenation unit". If so, the current opening degree of the inlet regulating valve of the dehydrogenation unit is regarded as the target opening degree of the inlet regulating valve of the dehydrogenation unit, and the valve of the return gas pipeline of the dehydrogenation unit is closed.

5. The helium recycling control method according to claim 1, characterized in that, The helium recycling control method also includes: Obtain the target range of gas temperature at the outlet of the cryogenic device and the measured value of gas temperature at the outlet of the cryogenic device; Determine whether the measured gas temperature at the outlet of the cryogenic device is within the target range for gas temperature. If not, adjust the load of the regenerator according to the deviation between the measured gas temperature at the outlet of the cryogenic device and the target gas temperature range, read the measured gas temperature at the outlet of the regenerator, and determine whether the measured gas temperature at the outlet of the regenerator is within the target gas temperature range; if yes, take the current load of the regenerator as the target load of the regenerator; if not, open the valve of the return gas pipeline of the regenerator, adjust the load of the regenerator according to the deviation between the measured gas temperature at the outlet of the regenerator and the target gas temperature range, and return to the step "read the measured gas temperature at the outlet of the regenerator".

6. The helium recycling control method according to claim 5, characterized in that, The helium recycling control method also includes: During the multi-stage purification of helium, the measured values ​​of the first impurity concentration at the outlet of the adsorption unit, the second impurity concentration and gas temperature at the outlet of the cryogenic unit, and the third impurity concentration and gas pressure at the outlet of the dehydrogenation unit are obtained at intervals according to the target opening degree of the inlet regulating valve of the adsorption unit, the target opening degree of the inlet regulating valve of the cryogenic unit, the target load of the regenerator, the target opening degree of the inlet regulating valve of the dehydrogenation unit, and the target speed of the compressor. Based on the deviations between the measured values ​​of the first impurity concentration at the outlet of the adsorption unit, the second impurity concentration at the outlet of the cryogenic unit, the gas temperature, the third impurity concentration at the outlet of the dehydrogenation unit, and the gas pressure and their respective target values, the target opening degree of the inlet regulating valve of the adsorption unit, the target opening degree of the inlet regulating valve of the cryogenic unit, the target load of the regenerator, the target opening degree of the inlet regulating valve of the dehydrogenation unit, and the target speed of the compressor are finely adjusted.

7. A helium recycling control system, characterized in that, include: The data acquisition module is used to acquire the measured values ​​of the first impurity concentration at the outlet of the adsorption unit, the second impurity concentration at the outlet of the cryogenic unit, the third impurity concentration at the outlet of the dehydrogenation unit, and the gas pressure. The first adjustment module is used to determine the target opening of the air inlet adjustment valve of the adsorption device based on the deviation between the upper limit of the first impurity concentration and the measured value of the first impurity concentration at the outlet of the adsorption device. The second adjustment module is used to determine the target opening of the inlet regulating valve of the cryogenic device based on the deviation between the upper limit of the second impurity concentration and the measured value of the second impurity concentration at the outlet of the cryogenic device. The third adjustment module is used to determine the target opening of the gas inlet regulating valve of the dehydrogenation unit based on the deviation between the upper limit of the third impurity concentration and the measured value of the third impurity concentration at the outlet of the dehydrogenation unit. The fourth adjustment module is used to determine the target speed of the compressor based on the deviation between the target gas pressure value and the measured gas pressure value at the outlet of the dehydrogenation unit; The execution module is used to perform a multi-stage helium purification process according to the target opening degree of the inlet regulating valve of the adsorption unit, the target opening degree of the inlet regulating valve of the cryogenic unit, the target opening degree of the inlet regulating valve of the dehydrogenation unit, and the target speed of the compressor.

8. A helium recycling control device, characterized in that, include: Control unit, and adsorption unit, cryogenic unit, reheater, dehydrogenation unit and compressor that are communicatively connected to the control unit; The adsorption unit, cryogenic unit, dehydrogenation unit, and compressor are connected sequentially via pipelines along the gas inlet direction; The reheater is located between the cryogenic unit and the dehydrogenation unit; The outlet and inlet of the adsorption unit, the outlet and inlet of the cryogenic unit, the outlet and inlet of the dehydrogenation unit, and the outlet and inlet of the reheater are also connected by a return gas pipeline. The inlet of the adsorption unit, the inlet of the cryogenic unit, and the inlet of the dehydrogenation unit are all equipped with inlet regulating valves; The outlets of the adsorption unit, the cryogenic unit, and the dehydrogenation unit are all equipped with corresponding impurity concentration sensors; the outlet of the cryogenic unit is also equipped with a temperature sensor; and the outlet of the dehydrogenation unit is also equipped with a pressure sensor. The intake regulating valve, impurity concentration sensor, temperature sensor, and pressure sensor are all connected in communication with the control unit; The control unit is used to execute the helium recycling control method according to any one of claims 1 to 6 to regulate the opening degree of the inlet regulating valves at the inlet of the adsorption unit, the inlet of the cryogenic unit, and the inlet of the dehydrogenation unit, the load of the regenerator, and the speed of the compressor.

9. 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 helium recycling control method according to any one of claims 1-6.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the helium recycling control method according to any one of claims 1-6.

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