Impurity gas poisoning test system of small solid hydrogen storage device
By designing the impurity gas poisoning test system of a small solid hydrogen storage device, simulating the hydrogen charging and discharging process under different impurity gases and temperature conditions, the problem of difficulty in testing the impact of impurity gases in hydrogen on hydrogen storage materials in the prior art is solved, and the problem of the impact of impurity gases in hydrogen on hydrogen storage materials is realized. Accurate evaluation and efficient testing of hydrogen storage materials.
Patent Information
- Application Number
- CN202420549416.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-20
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-03-20
AI Technical Summary
It is difficult for the prior art to effectively test and evaluate the impact of impurity gases in hydrogen on solid hydrogen storage materials, affecting hydrogen storage capacity and hydrogen charging and discharging performance.
A small solid hydrogen storage device has designed an impurity gas poisoning test system, including solid hydrogen storage container, gas supply system, heating system, cooling system, vacuum pump and controller, by simulating the charge and discharge of hydrogen under different impurity gases and temperature conditions. The process of achieving poisoning test of hydrogen storage materials.
The system can accurately simulate the impact of impurity gases in actual hydrogen on solid hydrogen storage containers, ensure the accuracy of the test, simplify the operation process, improve the testing efficiency, and apply to the performance evaluation of hydrogen storage materials under different temperatures and impurity gas conditions. .
Smart Images
Figure CN222256130U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hydrogen storage and transportation, in particular to an impurity gas poisoning test system for a small solid-state hydrogen storage device. Background Art
[0002] As a clean, efficient and sustainable secondary energy carrier, hydrogen energy is known as the "ultimate energy of the 21st century". It is an effective way to achieve carbon peak and carbon neutrality, and plays an important role in the transformation of energy structure. The key links that affect the scale development of hydrogen energy are storage and transportation. The current methods of hydrogen storage and transportation include high-pressure gas, cryogenic liquid and solid-state hydrogen storage. Among these technologies, solid-state hydrogen storage has become the most promising storage and transportation method due to its high safety and high volume density. The most important core of solid-state hydrogen storage is hydrogen storage materials. The performance of hydrogen storage materials will seriously affect the size of hydrogen storage capacity.
[0003] At present, the main sources of hydrogen are fossil energy hydrogen production, industrial byproduct hydrogen and water electrolysis hydrogen production. The hydrogen produced by these methods contains different impurity gases. The composition and concentration of impurity gases will seriously affect the charging and discharging performance of hydrogen storage materials. A test device is urgently needed to test the impact of these impurity gases on hydrogen storage materials. Utility Model Content
[0004] In view of this, an embodiment of the utility model provides an impurity gas poisoning test system for a small solid-state hydrogen storage device, which aims to simulate the effect of an actual hydrogen gas source containing different impurity gases on the poisoning of the hydrogen storage material.
[0005] The embodiment of the utility model provides an impurity gas poisoning test system for a small solid-state hydrogen storage device, comprising:
[0006] A solid-state hydrogen storage container, wherein a first valve is provided at the inlet of the solid-state hydrogen storage container for storing hydrogen, and a heating system is externally connected to the solid-state hydrogen storage container for heating the solid-state hydrogen storage container;
[0007] A gas supply system, one end of which is connected to the solid hydrogen storage container through a gas supply pipeline, and the other end of which can be selectively connected to an inert gas source, a pure hydrogen gas source, and a hydrogen gas source containing impurities, for supplying gas to the solid hydrogen storage container;
[0008] a vacuum pump, connected to the gas supply pipeline through a first pipeline, wherein the first pipeline is connected to a second valve;
[0009] a heat exchanger, one end of which is arranged beside the gas supply pipeline, and the other end of which is connected to a cooling system for cooling hydrogen when discharging hydrogen from the gas supply pipeline; and
[0010] A controller is electrically connected to the first valve, the second valve, the vacuum pump, the air supply system and the heat exchanger.
[0011] Furthermore, it also includes an exhaust pipeline, which is communicated with the air supply pipeline, and a third valve is connected to the exhaust pipeline, and the third valve is electrically connected to the controller.
[0012] Furthermore, a sampling port is provided on the exhaust pipeline, a fourth valve is installed at the sampling port, and the fourth valve is electrically connected to the controller.
[0013] Furthermore, the heating system is also connected to the cooling system to cool the heating system.
[0014] Furthermore, the hydrogen storage material in the solid-state hydrogen storage container is a hydrogen storage alloy.
[0015] Furthermore, a mass flow meter is provided on the gas supply pipeline, and the mass flow meter is electrically connected to the controller.
[0016] Furthermore, the inert gas source is one of argon, nitrogen and helium.
[0017] Furthermore, the controller is a PLC controller.
[0018] Furthermore, pressure reducing valves are provided at the outlets of the inert gas source, the pure hydrogen source and the hydrogen source containing impurity gas.
[0019] The technical solution provided in the embodiment of the utility model has the following beneficial effects: the impurity gas poisoning test system of the small solid-state hydrogen storage device of the utility model provides hydrogen and inert gas with different impurity gases to the solid-state hydrogen storage container through the gas supply system, the heating system provides heat for the hydrogen filling process of the solid-state hydrogen storage container, the cooling system reduces the hydrogen temperature for the hydrogen discharge process of the solid-state hydrogen storage container, the vacuum pump is used for exhausting the hydrogen discharge process and ensuring that the gas in the solid-state hydrogen storage container and the gas supply pipeline is emptied before hydrogen filling, and the controller is used to control the start and stop of the first valve, the second valve, the vacuum pump and other components during the test and record the changes in the temperature of the solid-state hydrogen storage container and the gas supply pipeline over time, so that the system can simulate the hydrogen filling and discharge process of the solid-state hydrogen storage container with a gas source containing different impurity gases in the actual hydrogen, and can simulate the hydrogen filling and discharge process of the hydrogen storage container with a gas source under different temperature conditions, thereby ensuring the accuracy of the impurity gas poisoning test on the solid-state hydrogen storage container. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a structural schematic diagram of an embodiment of an impurity gas poisoning test system for a small solid-state hydrogen storage device provided by the utility model.
[0021] In the figure: 1. solid hydrogen storage container; 2. first valve; 3. gas supply system; 4. gas supply pipeline; 5. vacuum pump; 6. first pipeline; 7. second valve; 8. heat exchanger; 9. cooling system; 10. heating system; 11. controller; 12. exhaust pipeline; 13. third valve; 14. fourth valve; 15. mass flow meter; 16. pressure reducing valve. DETAILED DESCRIPTION
[0022] In order to make the purpose, technical solution and advantages of the utility model clearer, the implementation mode of the utility model will be further described below in conjunction with the accompanying drawings.
[0023] Please refer to Figure 1 As shown, an embodiment of the utility model provides an impurity gas poisoning test system for a small solid-state hydrogen storage device, comprising: a solid-state hydrogen storage container 1, a gas supply system 3, a vacuum pump 5, a heat exchanger 8 and a controller 11. A first valve 2 is provided at the inlet of the solid hydrogen storage container 1 for storing hydrogen, and a heating system 10 is connected to the solid hydrogen storage container 1 for heating the solid hydrogen storage container 1; one end of the gas supply system 3 is connected to the solid hydrogen storage container 1 through a gas supply pipeline 4, and the other end of the gas supply system 3 can be selectively connected to an inert gas source, a pure hydrogen gas source and a hydrogen source containing impurity gas, for connecting gas to the solid hydrogen storage container 1, and a valve can be provided at the gas source outlet to selectively connect the gas supply system 3; the vacuum pump 5 is connected to the gas supply pipeline 4 through a first pipeline 6, and the first pipeline 6 is connected to a second valve; one end of the heat exchanger 8 is arranged beside the gas supply pipeline 4, and the other end is connected to a cooling system 9 for cooling the hydrogen when the gas supply pipeline 4 is discharged; a controller 11 is electrically connected to the first valve 2, the second valve, the vacuum pump 5, the gas supply system 3 and the heat exchanger 8.
[0024] The gas supply system 3 provides the solid hydrogen storage container 1 with gas sources of different impurity gases and inert gas, the heating system 10 provides heat for the solid hydrogen storage container 1 during the hydrogen filling process, the cooling system 9 cools the hydrogen during the hydrogen discharge process of the solid hydrogen storage container 1, the vacuum pump 5 is used for exhausting the hydrogen discharge process and ensuring that the gas in the solid hydrogen storage container 1 and the gas supply pipeline 4 is emptied before hydrogen filling, and the controller 11 is used to control the start and stop of the first valve 2, the second valve, the vacuum pump 5 and other components during the test and record the changes in information such as the temperature of the solid hydrogen storage container 1 and the gas supply pipeline 4 over time, so that the system can simulate the hydrogen filling and discharge process of the solid hydrogen storage container 1 with gas sources containing different impurity gases in the actual hydrogen, and can simulate the hydrogen filling and discharge process of the hydrogen storage container with gas sources under different temperature conditions, thereby ensuring the accuracy of the impurity gas poisoning test on the solid hydrogen storage container 1.
[0025] Among them, the sources of hydrogen mainly include hydrogen production from fossil energy, industrial by-product hydrogen and hydrogen production from water electrolysis. The hydrogen produced by these methods contains different impurity gases, and the impurity gases are mainly related to the method of hydrogen production.
[0026] Furthermore, it also includes an exhaust pipeline 12, the exhaust pipeline 12 is communicated with the gas supply pipeline 4, and the exhaust pipeline 12 is connected to a third valve 13, and the third valve 13 is electrically connected to the controller 11. By setting the exhaust pipeline 12, it is helpful to replace other gas sources during testing or test the influence of hydrogen sources with different impurities on the solid hydrogen storage container 1, by controlling to open the third valve 13, it is convenient to discharge the gas in the solid hydrogen storage container 1, and work together with the vacuum pump 5, so that the gas in the solid hydrogen storage container 1 is discharged more quickly.
[0027] Furthermore, a sampling port is provided on the exhaust pipe 12, and a fourth valve 14 is installed at the sampling port, and the fourth valve 14 is electrically connected to the controller 11. When it is necessary to detect impurity gas in the discharged hydrogen, a sampling test can be performed at the sampling port, and the specific operation is to open the fourth valve 14 and collect the impurity gas online or offline for testing.
[0028] Preferably, the heating system 10 is also connected to the cooling system 9 to cool the heating system 10. The heating system 10 is directly connected to the solid-state hydrogen storage container 1, and can directly heat the solid-state hydrogen storage container 1, so as to quickly complete the activation before the test. When the experimental temperature test needs to be adjusted, the temperature of the heating system 10 can be changed by the cooling system 9, so as to provide the solid-state hydrogen storage container 1 with test temperatures at different temperatures.
[0029] Specifically, the hydrogen storage material in the solid-state hydrogen storage container 1 is a hydrogen storage alloy.
[0030] Preferably, a mass flow meter 15 is further provided on the gas supply pipeline 4, and the mass flow meter 15 is electrically connected to the controller 11. The mass flow meter 15 can intuitively obtain the flow information in the gas supply pipeline 4, and can also facilitate the completion time of the hydrogen filling and dehydrogenation process in the solid hydrogen storage container 1.
[0031] Specifically, the inert gas source is one of argon, nitrogen and helium. The controller 11 is a PLC controller 11. The procedures of controlling the opening and closing of the valve and the switch of the vacuum pump 5 by the PLC controller 11 are very mature technologies and will not be described in detail here.
[0032] Specifically, pressure reducing valves 16 are provided at the outlets of the inert gas source, the pure hydrogen source and the hydrogen source containing impurity gas.
[0033] The specific steps of this application are:
[0034] First, pretreatment is performed, the hydrogen storage alloy material is filled into the solid hydrogen storage container 1, the first valve 2 is opened, the gas supply system 3 is connected to the inert gas source, and part of the gas is filled after the gas is reduced in pressure by the pressure reducing valve 16, and the air tightness of the detection device is tested. After the air tightness is qualified, the first valve 2 is closed, the third valve 13 is opened, and the gas in the solid hydrogen storage container 1 is discharged, and then the third valve 13 is closed, the cooling system 9 and the heating system 10 are opened, and the solid hydrogen storage container 1 is heated. The second valve is opened, and the vacuum pump 5 is turned on to extract the gas in the gas supply pipeline 4 and the solid hydrogen storage container 1. After emptying, the second valve and the vacuum pump 5 are closed to complete the pretreatment.
[0035] Then, the activation is performed. The gas supply system 3 is connected to the gas source of pure hydrogen, and the pressure is reduced to the test pressure through the pressure reducing valve 16. The heating system 10 is adjusted to the activation temperature. The first valve 2 is opened through the control of the PLC controller 11, and hydrogen filling begins. The hydrogen filling ends when the mass flow meter 15 reaches zero. The first valve 2 and the valve that closes the gas source are controlled by the PLC controller 11. The first valve 2 and the third valve 13 are opened. After the hydrogen is cooled by the cooling system 9, it flows through the mass flow meter 15 and is emptied. After the hydrogen is discharged, the third valve 13 is closed, and the second valve is opened. The vacuum pump 5 is turned on to extract the gas in the pipeline and the container. After the gas is completely emptied, the second valve is closed. Repeat this process 2-3 times to complete the activation.
[0036] Then start the hydrogen filling and discharging test: open the first valve 2, start hydrogen filling, connect the gas supply system 3 to the hydrogen source containing impurity gas, reduce the pressure to the test pressure through the pressure reducing valve 16, adjust the heating system 10 to the hydrogen filling temperature, open the first valve 2 to start hydrogen filling, and end hydrogen filling until the mass flow meter 15 is zero, close the first valve 2 and the heating system 10, and close the hydrogen valve at the gas supply end. Adjust the heating system 10 to the hydrogen discharging temperature, open the first valve 2 and the third valve 13, and the hydrogen containing impurity gas is cooled by the cooling system 9, and flows through the mass flow meter 15 to be vented. When detecting the impurity gas in the vented hydrogen, a sampling test can be performed at the sampling port. The specific operation is: open the fourth valve 14, collect the impurity gas online or offline for testing.
[0037] Finally, post-processing is performed: after the hydrogen discharge is completed, the third valve 13 is closed, the second valve is opened, and the vacuum pump 5 is turned on to extract the impurity gas in the solid hydrogen storage container 1 and the gas supply pipeline. After the impurities are exhausted, the second valve is closed, and the test conditions, such as impurity gas, hydrogen charging and discharging temperature, hydrogen charging and discharging pressure, etc., are changed, and the hydrogen charging and discharging test is repeated; when the poisoning performance of the hydrogen storage material is seriously reduced, the hydrogen storage material is replaced and the above process is repeated.
[0038] The device has a simple structure, high integration, and simple operation. It can realize automatic control by using PLC control programming and setting test conditions, saving time and improving efficiency. The device can also be used to test the cycle life of hydrogen storage alloys, providing reliable experimental data for engineering amplification.
[0039] In this document, the directional words such as front, back, top, and bottom are defined by the positions of the components in the drawings and the positions of the components relative to each other, and are only for the sake of clarity and convenience in expressing the technical solution. It should be understood that the use of the directional words should not limit the scope of protection claimed in this application.
[0040] In the absence of conflict, the above embodiments and features in the embodiments may be combined with each other.
[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.
Claims
1. An impurity gas poisoning test system for a small solid-state hydrogen storage device, characterized in that: include: A solid-state hydrogen storage container, wherein a first valve is provided at the inlet of the solid-state hydrogen storage container for storing hydrogen, and a heating system is externally connected to the solid-state hydrogen storage container for heating the solid-state hydrogen storage container; A gas supply system, one end of which is connected to the solid hydrogen storage container through a gas supply pipeline, and the other end of which can be selectively connected to an inert gas source, a pure hydrogen gas source, and a hydrogen gas source containing impurities, for supplying gas to the solid hydrogen storage container; a vacuum pump, connected to the gas supply pipeline through a first pipeline, wherein the first pipeline is connected to a second valve; A heat exchanger, one end of which is arranged beside the gas supply pipeline, and the other end of which is connected to a cooling system for cooling hydrogen when discharging hydrogen from the gas supply pipeline; as well as, A controller is electrically connected to the first valve, the second valve, the vacuum pump, the air supply system and the heat exchanger.
2. The impurity gas poisoning test system for a small solid-state hydrogen storage device as claimed in claim 1, characterized in that: It also includes an exhaust pipeline, which is communicated with the air supply pipeline, and a third valve is connected to the exhaust pipeline, and the third valve is electrically connected to the controller.
3. The impurity gas poisoning test system for a small solid-state hydrogen storage device as claimed in claim 2, characterized in that: The exhaust pipeline is also provided with a sampling port, a fourth valve is installed at the sampling port, and the fourth valve is electrically connected to the controller.
4. The impurity gas poisoning test system for a small solid-state hydrogen storage device as claimed in claim 1, characterized in that: The heating system is also in communication with the cooling system to cool the heating system.
5. The impurity gas poisoning test system for a small solid-state hydrogen storage device as claimed in claim 1, characterized in that: The hydrogen storage material in the solid-state hydrogen storage container is a hydrogen storage alloy.
6. The impurity gas poisoning test system for a small solid-state hydrogen storage device as claimed in claim 1, characterized in that: The gas supply pipeline is also provided with a mass flow meter, and the mass flow meter is electrically connected to the controller.
7. The impurity gas poisoning test system for a small solid-state hydrogen storage device as claimed in claim 1, characterized in that: The inert gas source is one of argon, nitrogen and helium.
8. The impurity gas poisoning test system for a small solid-state hydrogen storage device as claimed in claim 1, characterized in that: The controller is a PLC controller.
9. The impurity gas poisoning test system for a small solid-state hydrogen storage device as claimed in claim 1, characterized in that: The outlets of the inert gas source, the pure hydrogen source and the hydrogen source containing impurity gas are all provided with pressure reducing valves.