Mobile hydrogen refueling station testing device and system

Abstract

The utility model provides a mobile hydrogen refueling station testing device and system. The mobile hydrogen refueling station testing device comprises a hydrogen refueling interface module, a back pressure valve module, a nitrogen replacement module and a diffusion module, the hydrogenation interface module comprises a TK16 hydrogenation interface, a TK17 hydrogenation interface and a TK25 hydrogenation interface; by means of the means that the TK16 hydrogenation interface and the TK25 hydrogenation interface are connected with the 35 MPa hydrogenation machine, and the TK17 hydrogenation interface is connected with the 70 MPa hydrogenation machine, real-time monitoring and automatic operation of the testing process of the mobile hydrogenation station are achieved, and the safety, adaptability and efficiency of the mobile hydrogenation station are comprehensively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mobile hydrogen refueling station, and particularly to a mobile hydrogen refueling station testing device and system. BACKGROUND

[0002] With the global emphasis on clean energy and the continuous expansion of hydrogen energy in the fields of transportation and distributed power generation, the market demand for hydrogen fuel cell vehicles and other hydrogen energy application products is increasing, and the performance reliability of mobile hydrogen refueling stations, as a key link in the hydrogen energy industry chain, directly affects the user experience and the development of the industry.

[0003] Currently, the performance testing of mobile hydrogen refueling stations adopts the method of testing while using, which saves the testing cost of mobile hydrogen refueling stations.

[0004] However, the method of testing while using cannot guarantee the performance safety of mobile hydrogen refueling stations, affecting the safety and reliability of mobile hydrogen refueling stations. CONTENT OF THE INVENTION

[0005] The present application provides a mobile hydrogen refueling station testing device and system to solve the technical problem that existing mobile hydrogen refueling stations can only be tested while being used.

[0006] In a first aspect, the present application provides a mobile hydrogen refueling station testing device, comprising:

[0007] a hydrogen refueling interface module, a back pressure valve module, a nitrogen replacement module, and a diffusion module;

[0008] The hydrogen refueling interface module comprises a TK16 hydrogen refueling interface, a TK17 hydrogen refueling interface, and a TK25 hydrogen refueling interface.

[0009] The TK16 hydrogen refueling interface and the TK25 hydrogen refueling interface are connected to a 35MPa hydrogen refueling machine, and the TK17 hydrogen refueling interface is connected to a 70Mpa hydrogen refueling machine.

[0010] Further, the nitrogen replacement module comprises a 35MPa nitrogen replacement valve and a 70Mpa nitrogen replacement valve.

[0011] Further, the diffusion module comprises a diffusion valve and a diffusion port.

[0012] Further, the diffusion valve comprises a 35MPa diffusion valve and a 70Mpa diffusion valve.

[0013] Further, the diffusion port is provided with a flame arrester connected to a diffusion main pipe.

[0014] Further, the device further comprises a sensor module provided with a pressure sensor.

[0015] Further, the device further comprises a control module;

[0016] The control module is provided with a pressure control unit and a start-stop control unit.

[0017] Further, the pressure control unit is electrically connected with the hydrogenation interface module, the back pressure valve module and the nitrogen replacement module.

[0018] Further, the start-stop control unit is electrically connected with the hydrogenation interface module, the back pressure valve module, the nitrogen replacement module and the diffusion module.

[0019] In a second aspect, the present application provides a mobile hydrogenation station testing system comprising the mobile hydrogenation station testing device as described in the first aspect.

[0020] The mobile hydrogenation station testing device and system provided by the present application comprise a hydrogenation interface module, a back pressure valve module, a nitrogen replacement module and a diffusion module; the hydrogenation interface module comprises a TK16 hydrogenation interface, a TK17 hydrogenation interface and a TK25 hydrogenation interface; the TK16 hydrogenation interface and the TK25 hydrogenation interface are connected with a 35MPa hydrogenation machine, and the TK17 hydrogenation interface is connected with a 70Mpa hydrogenation machine, which realizes real-time monitoring and automatic operation of the mobile hydrogenation station testing process, and comprehensively improves the safety, adaptability and efficiency of the mobile hydrogenation station. BRIEF DESCRIPTION OF DRAWINGS

[0021] The drawings incorporated into the specification and forming a part thereof, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the application.

[0022] Figure 1 The overall architecture diagram of the mobile hydrogenation station testing device provided by the embodiments of the present application;

[0023] Figure 2 The pipeline structure diagram in the mobile hydrogenation station testing device provided by the embodiments of the present application.

[0024] Reference signs:

[0025] 100-mobile hydrogenation station testing device; 101-TK16 hydrogenation interface; 102-TK17 hydrogenation interface; 103-TK25 hydrogenation interface; 104-35MPa nitrogen replacement valve; 105-70Mpa nitrogen replacement valve; 106-diffusion port; 107-35MPa diffusion valve; 108-70Mpa diffusion valve; 109-pressure sensor.

[0026] The specific embodiments of the present application have been shown by the above-described drawings, and will be described in more detail hereinafter. These drawings and the written description are not intended to restrict the scope of the present application concept in any way, but to illustrate the present application concept to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0027] The exemplary embodiments will be described in detail herein below with reference to the drawings. In the following description, the same numbers refer to the same or similar elements unless otherwise represented. The embodiments described in the following exemplary embodiments do not represent all the embodiments consistent with the present application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the present application as detailed in the appended claims.

[0028] The existing mobile hydrogen refueling station test device lacks compatibility and cannot simultaneously adapt to hydrogen refueling guns and hydrogen storage bottles of different pressure grades, limiting the wide application of mobile hydrogen refueling stations. On the other hand, the existing test of mobile hydrogen refueling stations is mainly carried out while being put into use, which has problems such as inaccurate pressure control, low test efficiency, and high safety risk. In addition, the traditional device is difficult to realize accurate control and safety protection in the links of nitrogen replacement, diffusion and leakage detection, increasing the uncertainty and hidden danger in the test process.

[0029] In view of the above technical problems, the inventors thought of the design idea of modular design and automatic control integration, realized the compatibility of hydrogen refueling guns of different pressure grades of 35MPa and 70MPa by introducing multiple hydrogen refueling interfaces, realized the accurate regulation and dynamic simulation of pressure by automatic back pressure valve and pressure control unit, and ensured the system cleanliness before and after the test and the safe release of high-pressure gas by nitrogen replacement module and diffusion module, which comprehensively improved the safety, adaptability and efficiency of the system.

[0030] The technical solutions of the present application and how the technical solutions of the present application solve the above technical problems will be described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of the present application will be described below with reference to the drawings.

[0031] Figure 1 The overall architecture diagram of the mobile hydrogen refueling station test device provided by the embodiments of the present application is shown in FIG. 1. Figure 1 As shown in FIG. 1, the mobile hydrogen refueling station test device 100 comprises:

[0032] hydrogen refueling interface module, back pressure valve module, nitrogen replacement module and diffusion module.

[0033] The hydrogenation interface module includes a TK16 hydrogenation interface 101, a TK17 hydrogenation interface 102, and a TK25 hydrogenation interface 103.

[0034] The TK16 hydrogenation interface 101 is used to connect a 35 MPa hydrogenation gun and is adapted to a TK16 type hydrogen storage bottle interface. The TK25 hydrogenation interface 103 is used to connect a 35 MPa hydrogenation gun and is adapted to a TK25 type hydrogen storage bottle interface. The TK17 hydrogenation interface 102 is used to connect a 70 MPa hydrogenation gun and is adapted to a TK17 type hydrogen storage bottle interface. Specifically, the TK16 hydrogenation interface 101 and the TK25 hydrogenation interface 103 are respectively connected to a 35 MPa hydrogenation machine, supporting the test requirements of a 35 MPa system, and the TK17 hydrogenation interface 102 is connected to a 70 MPa hydrogenation machine, supporting the test requirements of a 70 MPa system. Therefore, the different types of hydrogenation interfaces in the mobile hydrogen refueling station test device 100 can realize connection with different types of hydrogenation guns and hydrogen storage bottles, such as adapting to common 35 MPa and 70 MPa hydrogenation machines, and at the same time, providing interface adaptability to support hydrogen storage bottle testing of different pressure levels, ensuring the compatibility of the test.

[0035] The nitrogen replacement module includes a 35 MPa nitrogen replacement valve 104 and a 70 MPa nitrogen replacement valve 105. The 35 MPa nitrogen replacement valve 104 is used to control the nitrogen replacement process of the 35 MPa hydrogenation machine, and the 70 MPa nitrogen replacement valve 105 is used to control the nitrogen replacement process of the 70 MPa hydrogenation machine. The connection modes of the various interfaces are different, and the nitrogen source is connected to the mobile hydrogen refueling station test device 100 through the replacement interface and is connected to the 35 MPa nitrogen replacement valve 104 and the 70 MPa nitrogen replacement valve 105, respectively, and the nitrogen replacement module is connected to the entire test pipeline for nitrogen inlet and gas replacement.

[0036] For the mobile hydrogen refueling station test device 100, the nitrogen replacement module can ensure the cleanliness of the mobile hydrogen refueling station test system by replacing the residual gas in the pipeline before the test starts, avoiding the influence of other residual gases on the test accuracy or safety. In addition, after the test is completed, the residual hydrogen in the mobile hydrogen refueling station test system is purged by nitrogen to ensure the safety of the mobile hydrogen refueling station test system.

[0037] For the back pressure valve module, an automatic back pressure valve is provided in the back pressure valve module and is connected to the 35 MPa hydrogenation machine and the 70 MPa hydrogenation machine, respectively. The back pressure valve module is electrically and physically connected to the hydrogenation interface module and the test pipeline, and the back pressure valve is set to a specific back pressure value by a pressure control unit to simulate the internal pressure change of the hydrogen storage bottle. The back pressure valve module provides stable back pressure conditions for the compressor, simulates the operating conditions of the hydrogen storage bottle under different pressures, and supports multi-pressure point testing, such as 5 MPa, 10 MPa, 20 MPa, etc., ensuring that the test process of the mobile hydrogen refueling station covers the actual operating range.

[0038] For the venting module, it includes a venting valve and a venting port 106. The venting valve includes a 35MPa venting valve 107 and a 70MPa venting valve 108.

[0039] The 35MPa venting valve 107 is used to control the release of gas in the 35MPa hydrogenation machine, and the 70MPa venting valve 108 is used to control the release of gas in the 70MPa hydrogenation machine. Specifically, when the test is over or the pressure needs to be released, the residual gas in the pipeline is safely discharged to the venting main pipe through the venting valve.

[0040] The venting port 106 contains a flame arrester and is connected to the venting main pipe. The flame arrester prevents sparks or backfire from entering the mobile hydrogenation station test device 100 during the venting process, enhancing the safety of the test.

[0041] The device also includes a sensor module, which is provided with a pressure sensor 109 for real-time monitoring of the gas pressure in the pipeline.

[0042] In addition, the device also includes a control module; the control module is provided with a pressure control unit and a start-stop control unit. The pressure control unit is used to set and adjust the pressure, such as the pressure value of the back pressure valve, the nitrogen replacement pressure, etc., while the start-stop control unit is used to control the start-stop operation of each module, such as the valve state of the hydrogenation interface module, the venting module, the nitrogen replacement module, etc. Specifically, the pressure control unit is electrically connected with the hydrogenation interface module, the back pressure valve module, and the nitrogen replacement module, for realizing the precise control of the pressure, while the start-stop control unit is electrically connected with all the modules (the hydrogenation interface module, the back pressure valve module, the nitrogen replacement module, and the venting module), for controlling the operation process of the test device.

[0043] For the pressure control unit, it can automatically adjust the pressure of the back pressure valve and the test hydrogenation machine, ensuring the stability and adjustability of the pressure control, while the start-stop control unit: provides one-key control function, realizing the automatic operation of the test process, such as the start of nitrogen replacement, the adjustment of back pressure, the start of hydrogenation test, the venting operation, etc.

[0044] Exemplarily, for the nitrogen replacement process, nitrogen can be connected to the replacement module, and by opening the 35MPa nitrogen replacement valve 104 or the 70MPa nitrogen replacement valve 105, nitrogen is introduced to replace the residual gas in the pipeline. The pressure sensor 109 monitors the pipeline pressure in real time during the replacement process, and the replacement valve is closed after the nitrogen replacement is completed.

[0045] For the hydrogenation test process, connect the corresponding hydrogenation interface (TK16 hydrogenation interface 101, TK17 hydrogenation interface 102 and TK25 hydrogenation interface 103) according to the test requirements, adjust the back pressure valve to the target pressure (such as 5 MPa), start the hydrogenation machine, and monitor parameters such as pressure and temperature through the sensor to ensure that the pressure is stable at the set value.

[0046] For the diffusion and purging process, the 35 MPa diffusion valve 107 or the 70 MPa diffusion valve 108 can be opened to safely release the residual gas in the hydrogenation machine through the flame arrester and the diffusion port. After the diffusion is completed, the hydrogenation machine pipeline is purged again through the nitrogen replacement module to ensure that the internal gas is completely emptied.

[0047] The mobile hydrogenation station test device provided in the application integrates the hydrogenation interface module, the back pressure valve module, the nitrogen replacement module and the diffusion module into a unified system through modular design, and realizes a high-precision, fully automated test process by combining the sensor module and the control module. It can be widely applied to performance verification of mobile hydrogenation stations of different pressure grades, and provides an efficient, safe and reliable test solution for the industry.

[0048] Figure 2 The pipeline structure diagram of the mobile hydrogenation station test device provided in the embodiments of the application is shown in FIG. 1. Figure 2 As shown in FIG. 1, for the interface part, the TK25 hydrogenation interface 103 and the TK16 interface support the test of the 35 MPa hydrogenation gun, and the TK17 interface supports the test of the 70 MPa hydrogenation gun.

[0049] In addition, a pressure gauge PI2001 is arranged at each of the TK25 hydrogenation interface 103 and the TK17 hydrogenation interface 102 to monitor the pressure of different interfaces. Specifically, the pressure gauge PI2001 is used to monitor the gas pressure level in the mobile hydrogenation station test device in real time, to provide a pressure reference value for the operator, to detect the pressure change at each stage, to ensure that the mobile hydrogenation station test device meets the set value and to timely find abnormal conditions.

[0050] The automatic back pressure valve is used to automatically control the gas pressure level of the entire mobile hydrogenation station test device, to simulate the working state of the on-board hydrogen storage bottle by pre-setting the back pressure value, and to provide load adjustment for the compressor. Specifically, the automatic back pressure valve is mainly used to simulate the pressure change inside the hydrogen storage tank during the mobile hydrogenation station test process, to ensure the pressure stability, to support the airtightness test and the continuous operation test.

[0051] For the valve part, including HV1001, HV1002, HV1003, HV1004. Among them, HV1001 and HV1004 mainly act on the control of the flow direction of test gas and nitrogen. Specifically, HV1001 is used for gas diffusion exhaust to quickly release the pressure in the mobile hydrogenation station test device, and HV1004 is used for nitrogen replacement or purging operation in cooperation with HV1001.

[0052] The nitrogen replacement port is mainly used to replace the gas in the pipeline before testing, and to purge the residual hydrogen after testing to ensure the safety and cleanliness of the hydrogenation machine. Specifically, the nitrogen replacement port can purge the residual gas in the test pipeline, reducing the risk of hydrogen residue explosion.

[0053] The diffusion port and the manifold are set to ensure that the residual pressure release after completing the mobile hydrogenation station test meets the safety standards and prevents accidental pressure overload or leakage. Specifically, the diffusion port and the manifold are used to release residual gas in the pipeline after the mobile hydrogenation station test, and the gas is safely discharged to the diffusion tower by connecting to the diffusion manifold.

[0054] In addition, a one-way valve is installed near the diffusion manifold in the pipeline to prevent gas backflow into the mobile hydrogenation station test device, ensuring that the gas can only flow in the set direction, protecting the safety of the mobile hydrogenation station test device.

[0055] Exemplarily, before testing the mobile hydrogenation station, connect the interface of the test platform to the mobile hydrogenation station test device. Specifically, according to the test requirements, select the corresponding pressure level interface (TK25 interface, TK16 interface and TK17 interface) to connect the hydrogenation gun, then connect the diffusion port to the diffusion manifold of the diffusion tower through the pipeline to ensure the safety of the discharge. Finally, connect the nitrogen source to the nitrogen replacement port and control the input of nitrogen through HV1002.

[0056] Next, set the pressure of the automatic back pressure valve to 5MPa to ensure stable pressure during testing, then perform gas replacement, open HV1002 to allow nitrogen to enter the mobile hydrogenation station test device, and observe the pressure gauge PI2001. When the pressure gauge PI2001 shows that the pressure rises to 1MPa, close HV1002. Then perform the exhaust operation, open HV1001 to discharge nitrogen to the diffusion manifold, and observe the pressure gauge PI2001. When the pressure gauge PI2001 shows that the pressure drops to 0.1MPa, close HV1001. Finally, repeat the nitrogen replacement three times according to the above process to ensure that the residual gas in the mobile hydrogenation station test device is completely discharged to meet the safety and cleanliness requirements before testing.

[0057] After the nitrogen replacement is completed, airtightness testing can be performed. Specifically, first, the pressure preparation of the mobile hydrogen station is performed, the 35 MPa hydrogen gun is connected to the TK25 or TK16 interface according to the test requirements, and the HV1001 and HV1002 are ensured to be in the closed state to prevent test gas leakage or abnormal flow. Then, the back pressure valve is set to 5 MPa, the refueling program of the hydrogen filling machine is started, and hydrogen is gradually injected into the mobile hydrogen station test device, while the pressure gauge reading is observed, and when the pressure stabilizes at 5 MPa, the next step of detection is entered. At this time, the control module in the mobile hydrogen station test device automatically monitors the pressure and temperature data to ensure stability and safety, and then the soap bubble method can be used to detect all pipe joints to observe whether bubbles are generated to judge the leakage. If there is no leakage, gradually increase the back pressure valve setting value to 10 MPa, 15 MPa, 20 MPa, 25 MPa, 30 MPa and 35 MPa, and repeat the leakage detection in turn. Through the above step-by-step pressure increase and leakage detection, it is ensured that the airtightness of the mobile hydrogen station meets the design standard, the safety hidden danger caused by high-pressure hydrogen leakage is avoided, and the sealing performance of the mobile hydrogen station is verified.

[0058] In another implementable manner, the mobile hydrogen station test device can also perform continuous operation testing. The back pressure valve is set to 35 MPa, and continuous operation is performed for 1 hour to simulate actual working conditions. Real-time monitoring of various parameters fed back by the pressure gauge (PI2001), temperature sensors and electric control equipment ensures that indicators such as pressure fluctuation and temperature change are within the allowable range. After the operation is completed, the back pressure valve is set to the stop pressure value of the refueling program, and the pressure gauge is observed. When the detection pressure of the mobile hydrogen station reaches the set value, the refueling should be automatically stopped to verify the reliability of the automatic control function of the mobile hydrogen station.

[0059] In addition, the diffusion and purging process ensures that the pipeline and equipment inside are clean and safe after testing, providing reliable protection for the next use or storage, and preventing safety accidents caused by hydrogen residue. The specific diffusion and purging process is as follows: first, safely release the pressure, pull out the hydrogen gun, and gradually reduce the back pressure valve setting value to 5 MPa to slowly release the high-pressure gas in the hydrogen filling machine to prevent safety accidents caused by sudden pressure drop. Second, empty the pipeline, open HV1001, and discharge the residual gas to the diffusion main pipe, and observe the pressure gauge. When the pressure drops to 0.1 MPa, close HV1001. Third, nitrogen purging and cleaning, open HV1002, and repeat the above nitrogen replacement process to replace and purge the residual hydrogen in the mobile hydrogen station with nitrogen to prevent the risk of explosion or corrosion caused by residual gas.

[0060] The embodiment of the application describes the complete operation process of the mobile hydrogenation station test device from the access to the hydrogenation machine, nitrogen replacement, gas tightness test, continuous operation test to diffusion and purging. The process ensures the accuracy and safety of the test through automatic control and real-time monitoring, and is suitable for various interfaces and pressure standards, has strong adaptability and operability, and provides a systematic solution for performance verification and safety guarantee of the mobile hydrogenation station.

[0061] On the other hand, the application provides a mobile hydrogenation station test system which forms a highly automated and safe and reliable test system by integrating a hydrogenation interface module, a back pressure valve module, a nitrogen replacement module, a diffusion module, a sensor module and a control module. The mobile hydrogenation station test system not only is compatible with hydrogenation guns and hydrogen storage bottles of different pressure grades of 35 MPa and 70 MPa, and adapts to various test requirements, but also ensures the efficiency, accuracy and safety of the test process through automatic back pressure adjustment, real-time pressure monitoring, accurate nitrogen replacement and safe diffusion function. In addition, the start-stop control unit realizes one-key operation, greatly reduces manual intervention, improves test efficiency and system reliability, and provides all-round protection for performance verification of the mobile hydrogenation station.

[0062] It should be understood that the above-mentioned device embodiments are only illustrative, and the device of the application can also be implemented in other ways. For example, the division of units / modules in the above-mentioned embodiments is only a logical functional division, and another division mode can be used in actual implementation. For example, a plurality of units, modules or components can be combined, or can be integrated into another system, or some features can be ignored or not executed.

[0063] In addition, unless otherwise specified, each functional unit / module in each embodiment of the application can be integrated in one unit / module, or each unit / module can exist physically, or two or more units / modules can be integrated together. The above-mentioned integrated unit / module can be realized in the form of hardware or in the form of software program module.

[0064] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. The application is intended to cover any variations, uses or adaptations of the application following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice in the art to which the application pertains. The specification and examples are to be regarded as illustrative only, and the true scope and spirit of the application is indicated by the following claims.

[0065] It should be understood that the application is not limited to the precise construction that has been described above and shown in the accompanying drawings, and that various modifications and changes can be effected therein by those skilled in the art without departing from the scope of the application. The scope of the application is to be limited only by the appended claims.

Claims

1. A mobile hydrogen station testing device, characterized in that, The device comprises a hydrogenation interface module, a back pressure valve module, a nitrogen replacement module and a diffusion module. The hydrogenation interface module comprises a TK16 hydrogenation interface, a TK17 hydrogenation interface and a TK25 hydrogenation interface. The TK16 hydrogenation interface and the TK25 hydrogenation interface are connected with a 35MPa hydrogenation machine, and the TK17 hydrogenation interface is connected with a 70MPa hydrogenation machine. The nitrogen replacement module comprises a 35MPa nitrogen replacement valve and a 70MPa nitrogen replacement valve.

2. The apparatus of claim 1, wherein, The diffusion module comprises a diffusion valve and a diffusion port.

3. The apparatus of claim 1, wherein, The diffusion valve comprises a 35MPa diffusion valve and a 70MPa diffusion valve.

4. The apparatus of claim 3, wherein, The diffusion port is provided with a flame arrester connected with a diffusion main pipe.

5. The apparatus of claim 3, wherein, The device further comprises a sensor module provided with a pressure sensor.

6. The device of any one of claims 1 to 5, wherein, The device further comprises a control module.

7. The device of any one of claims 1 to 5, wherein, The control module is provided with a pressure control unit and a start-stop control unit. The pressure control unit is electrically connected with the hydrogenation interface module, the back pressure valve module and the nitrogen replacement module.

8. The apparatus of claim 7, wherein, The start-stop control unit is electrically connected with the hydrogenation interface module, the back pressure valve module, the nitrogen replacement module and the diffusion module.

9. The apparatus of claim 7, wherein, The device comprises a mobile hydrogenation station test device as claimed in any one of claims 1 to 9.

10. A mobile hydrogen station testing system, comprising: ​

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