System and method for detecting compatibility of non-metallic material piece and hydrogen

Abstract

The invention discloses a non-metallic material part and hydrogen compatibility detection system and a detection method thereof, the non-metallic material part and hydrogen compatibility detection system comprises: a gas supply device for providing hydrogen; one end of the heat exchange device is communicated with an outlet of the air supply device; the other end of the heat exchange device is communicated with the test bin, and the non-metal material part is suitable for being placed in the test bin. According to the non-metallic material piece and hydrogen compatibility detection system, the gas supply device is used for providing hydrogen, one end of the heat exchange device is communicated with the outlet of the gas supply device, the other end of the heat exchange device is communicated with the test bin, and the non-metallic material piece is suitable for being placed in the test bin, so that the temperature of hydrogen entering the test bin is changed; further, compatibility detection of the non-metallic material piece and hydrogen at different temperatures is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of material mechanical property testing equipment development, and in particular to a non-metallic material part and hydrogen compatibility detection system and a detection method thereof. Background Art

[0002] Hydrogen is an important component in the clean utilization of fossil energy and the development of new energy. Hydrogen is usually stored and transported in the form of high-pressure gas, and the compatibility of materials used in high-pressure hydrogen storage systems with hydrogen has become increasingly concerning. In the prior art, metal materials are usually tested for hydrogen compatibility. However, the materials used in high-pressure hydrogen storage systems also include non-metallic materials, such as rubber seals. Therefore, in order to ensure the safety of high-pressure hydrogen storage systems, it is urgent to conduct experimental research on the compatibility of non-metallic materials with hydrogen. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a non-metallic material and hydrogen compatibility detection system, which realizes compatibility detection of non-metallic material and hydrogen under nominal working pressure at different temperatures.

[0004] The present invention further provides a method for detecting compatibility between a non-metallic material and hydrogen. The method for detecting compatibility between a non-metallic material and hydrogen adopts the above-mentioned system for detecting compatibility between a non-metallic material and hydrogen.

[0005] According to an embodiment of the present invention, a non-metallic material and hydrogen compatibility detection system includes: a gas supply device, which is used to provide hydrogen; a heat exchange device, one end of which is connected to the outlet of the gas supply device; and a test chamber, the other end of which is connected to the test chamber, and the non-metallic material is suitable for being placed in the test chamber.

[0006] According to the non-metallic material and hydrogen compatibility detection system of the embodiment of the present invention, a gas supply device is used to provide hydrogen, one end of the heat exchange device is connected to the outlet of the gas supply device, and the other end of the heat exchange device is connected to the test chamber. The non-metallic material is suitable for being placed in the test chamber, thereby changing the temperature of the hydrogen entering the test chamber, thereby realizing the compatibility detection of the non-metallic material and hydrogen at different temperatures.

[0007] In some embodiments of the present invention, the heat exchange device includes: a precooling heat exchanger; a preheating heat exchanger; a first pipeline, the precooling heat exchanger is connected in series to the first pipeline; a first control valve, the first control valve is arranged on the first pipeline, and is used to control the on-off of the first pipeline; a second pipeline, the preheating heat exchanger is connected in series to the second pipeline, the first pipeline and the second pipeline are arranged in parallel, one end of the first pipeline and the second pipeline is connected to the outlet of the gas supply device, and the other end of the first pipeline and the second pipeline is connected to the test chamber; a second control valve, the second control valve is arranged on the second pipeline, and is used to control the on-off of the second pipeline.

[0008] In some embodiments of the present invention, the heat exchange device and the test chamber are connected via a fourth pipeline, and the fourth pipeline is provided with a first pressure detection device and a temperature detection device.

[0009] In some embodiments of the present invention, the third pipeline is further included, one end of the third pipeline is connected to the heat exchange device, and the other end is connected to the external environment, and a third control valve is provided on the third pipeline.

[0010] In some embodiments of the present invention, the present invention further comprises: a gas replacement device, wherein the gas replacement device is used to provide nitrogen, and an outlet of the gas replacement device is connected to the heat exchange device.

[0011] In some embodiments of the present invention, a hydrogen storage bottle, a pressurizing machine and a high-pressure gas cylinder are further included between the gas supply device and the heat exchange device, the inlet of the hydrogen storage bottle is connected to the outlet of the gas supply device, the inlet of the pressurizing machine is connected to the outlet of the hydrogen storage bottle, the inlet of the high-pressure gas cylinder is connected to the outlet of the pressurizing machine, and the outlet of the high-pressure gas cylinder is connected to the heat exchange device.

[0012] In some embodiments of the present invention, it further includes: a test environment chamber, wherein the test chamber is located inside the test environment chamber, and a hydrogen and oxygen concentration detection device is provided on the inner wall surface of the test environment chamber.

[0013] In some embodiments of the present invention, the present invention further comprises: an exhaust fan, wherein the inlet of the exhaust fan is connected to the test environment chamber, and the exhaust fan is communicatively connected to the hydrogen and oxygen concentration detection device.

[0014] According to the method for detecting the compatibility of non-metallic material parts with hydrogen according to the embodiment of the present invention, the method for detecting the compatibility of non-metallic material parts with hydrogen adopts the above-mentioned system for detecting the compatibility of non-metallic material parts with hydrogen, and the detection method includes: providing hydrogen into the test chamber through the gas supply device; obtaining the temperature and pressure of the hydrogen entering the test chamber; adjusting the temperature of the hydrogen entering the test chamber through the heat exchange device; determining that the temperature of the hydrogen entering the test chamber reaches a first preset temperature value and the pressure reaches a first preset pressure value; after determining that the temperature of the hydrogen reaches the first preset temperature value and the pressure reaches the first preset pressure value and runs for a first preset time, controlling the gas supply device to stop supplying hydrogen into the test chamber and exhausting the hydrogen in the test chamber; taking out the non-metallic material parts located in the test chamber, and detecting the non-metallic material parts.

[0015] According to the non-metallic material and hydrogen compatibility detection method of the embodiment of the present invention, a non-metallic material and hydrogen compatibility detection system is used, hydrogen is provided to the test chamber through a gas supply device, the temperature and pressure of the hydrogen entering the test chamber are obtained, the heat exchange device adjusts the temperature of the hydrogen entering the test chamber, and it is determined that the temperature of the hydrogen entering the test chamber reaches a first preset temperature value and the pressure reaches a first preset pressure value, and after running for a first preset time after determining that the temperature of the hydrogen reaches the first preset temperature value and the pressure reaches the first preset pressure value, the gas supply device is controlled to stop supplying hydrogen to the test chamber, and the hydrogen in the test chamber is emptied to take out the non-metallic material located in the test chamber, and the non-metallic material is tested, thereby realizing the hydrogen compatibility test of the non-metallic material in the high-pressure hydrogen storage system.

[0016] In some embodiments of the present invention, before taking out the non-metallic material part located in the test chamber and testing the non-metallic material part, the testing method further includes: supplying hydrogen to the test chamber again through the gas supply device; obtaining the temperature and pressure of the hydrogen entering the test chamber; adjusting the temperature of the hydrogen entering the test chamber through the heat exchange device; determining that the temperature of the hydrogen entering the test chamber reaches a second preset temperature value and the pressure reaches the first preset pressure value, and the second preset temperature value is less than the first preset temperature value; and after determining that the temperature of the hydrogen reaches the second preset temperature value and the pressure reaches the first preset pressure value and runs for the first preset time, controlling the gas supply device to stop supplying hydrogen to the test chamber and exhausting the hydrogen in the test chamber.

[0017] In some embodiments of the present invention, the non-metallic material part and hydrogen compatibility detection system also includes a gas replacement device for providing nitrogen, and the outlet of the gas replacement device is connected to the heat exchange device. Before the hydrogen is provided to the test chamber through the gas supply device, the detection method also includes: providing nitrogen to the test chamber through the gas replacement device; after determining that the non-metallic material part and hydrogen compatibility detection system is full of nitrogen, controlling the gas replacement device to stop providing nitrogen to the test chamber and exhausting the nitrogen in the non-metallic material part and hydrogen compatibility detection system.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 is a schematic diagram of a non-metallic material and hydrogen compatibility detection system according to an embodiment of the present invention;

[0021] Figure 2 is a flow chart of a method for detecting compatibility between a non-metallic material and hydrogen according to an embodiment of the present invention;

[0022] Figure 3 is a flow chart of another embodiment of a method for detecting compatibility of a non-metallic material with hydrogen according to an embodiment of the present invention;

[0023] Figure 4 The flowchart is another embodiment of the method for detecting the compatibility of a non-metallic material with hydrogen according to an embodiment of the present invention.

[0024] Reference numerals:

[0025] 100. Non-metallic material and hydrogen compatibility detection system;

[0026] 1. Air supply device;

[0027] 2. heat exchange device; 21. precooling heat exchanger; 22. preheating heat exchanger; 23. first pipeline; 24. first control valve; 25. second pipeline; 26. second control valve;

[0028] 3. Test warehouse;

[0029] 4. Fourth pipeline; 41. First pressure detection device; 42. Temperature detection device;

[0030] 5. The third pipeline; 51. The third control valve; 52. The third check valve;

[0031] 6. Fifth pipeline; 61. Safety valve;

[0032] 7. Gas replacement device;

[0033] 8. Seventh pipeline; 81. Fifth control valve; 82. Fourth check valve;

[0034] 9. Hydrogen storage bottle;

[0035] 10. Pressurizer;

[0036] 11. High-pressure gas cylinders;

[0037] 12. Eighth pipeline; 121. Sixth control valve;

[0038] 13. Ninth pipeline; 131. Second pressure detection device; 132. Flow meter;

[0039] 14. Test environment chamber; 141. Hydrogen and oxygen concentration detection device;

[0040] 15. Exhaust fan;

[0041] 16. Sixth pipeline; 161. Fourth control valve; 162. First one-way valve. DETAILED DESCRIPTION

[0042] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0043] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0044] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] A non-metallic material and hydrogen compatibility detection system 100 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0046] like Figure 1 As shown, a non-metallic material and hydrogen compatibility detection system 100 according to an embodiment of the present invention comprises a gas supply device 1, a heat exchange device 2 and a test chamber 3. The gas supply device 1 is used to provide hydrogen, one end of the heat exchange device 2 is connected to the outlet of the gas supply device 1, and the other end of the heat exchange device 2 is connected to the test chamber 3, and the non-metallic material is suitable for being placed in the test chamber 3.

[0047] It is understandable that when the non-metallic material and hydrogen compatibility detection system 100 is used to test the non-metallic material, the non-metallic material to be tested is first placed in the test chamber 3, and then the gas supply device 1 inputs hydrogen at the nominal working pressure to the heat exchange device 2, and heat is exchanged with the hydrogen through the heat exchange device 2, thereby changing the temperature of the hydrogen entering the test chamber 3, and then realizing the compatibility detection of the non-metallic material and the hydrogen at the nominal working pressure at different temperatures. At the same time, non-metallic material of different specifications can be placed in the test chamber 3, so that non-metallic material of multiple specifications can be tested, reducing the test cost.

[0048] Specifically, the non-metallic material and hydrogen compatibility detection system 100 tests the compatibility of the non-metallic material and hydrogen under the nominal working pressure, and then the compatibility of the non-metallic material and hydrogen is detected after the first preset temperature value and the second preset temperature are maintained for a first preset time. First, the non-metallic material part to be tested is placed in the test chamber 3, and the gas supply device 1 inputs hydrogen under the nominal working pressure to the heat exchange device 2, and heat exchanges with the hydrogen through the heat exchange device 2 so that the temperature of the hydrogen entering the test chamber 3 reaches a first preset temperature value, the gas supply device 1 is closed and the gas in the non-metallic material part and the hydrogen compatibility detection system 100 is emptied after waiting for the first preset time, and the gas supply device 1 again inputs hydrogen under the nominal working pressure to the heat exchange device 2, and heat exchanges with the hydrogen through the heat exchange device 2 so that the temperature of the hydrogen entering the test chamber 3 reaches a second preset temperature value, and the gas in the non-metallic material part and the hydrogen compatibility detection system 100 is emptied after waiting for the first preset time, and the non-metallic material part is taken out and tested, for example, the volume expansion rate and mass loss rate of the non-metallic material part are measured.

[0049] It should be noted that the first preset temperature and the second preset temperature are different, in order to test the compatibility of non-metallic materials with hydrogen at the same nominal working pressure at different temperatures. For example, in a fuel cell hydrogen storage system, external leakage will cause hydrogen leakage, and internal leakage will cause hydrogen contamination. Both internal and external leakage may cause hydrogen combustion or even explosion. Therefore, the hydrogen storage system needs to use seals to prevent hydrogen leakage and the intrusion of external dust and foreign matter. In the test experiment on the compatibility of seals and hydrogen, the first preset temperature is 15°C, the second preset temperature is -40°C, and the first preset time is 168h, so as to simulate the application of the seal in different scenarios in the high-pressure hydrogen storage system, and by testing the volume change rate and mass loss rate of the seal, the reliability and service life of the seal under the nominal working pressure of hydrogen are detected, thereby improving the overall safety of the fuel cell hydrogen storage system.

[0050] According to the non-metallic material and hydrogen compatibility detection system 100 of the embodiment of the present invention, a gas supply device 1 is used to provide hydrogen, one end of the heat exchange device 2 is connected to the outlet of the gas supply device 1, and the other end of the heat exchange device 2 is connected to the test chamber 3. The non-metallic material is suitable for being placed in the test chamber 3, thereby changing the temperature of the hydrogen entering the test chamber 3, and further realizing the compatibility detection of the non-metallic material and hydrogen at different temperatures.

[0051] In some embodiments of the present invention, Figure 1As shown, the heat exchange device 2 includes a precooling heat exchanger 21, a preheating heat exchanger 22, a first pipeline 23, a first control valve 24, a second pipeline 25 and a second control valve 26. The precooling heat exchanger 21 is connected in series to the first pipeline 23, the first control valve 24 is arranged on the first pipeline 23, and is used to control the on-off of the first pipeline 23, the preheating heat exchanger 22 is connected in series to the second pipeline 25, the first pipeline 23 and the second pipeline 25 are arranged in parallel, one end of the first pipeline 23 and the second pipeline 25 are connected to the outlet of the gas supply device 1, and the other end of the first pipeline 23 and the second pipeline 25 are connected to the test chamber 3, and the second control valve 26 is arranged on the second pipeline 25, and is used to control the on-off of the second pipeline 25.

[0052] It can be understood that, in the test of the compatibility of non-metallic material parts and hydrogen under the nominal working pressure at the first preset temperature by the non-metallic material part and hydrogen compatibility detection system 100, when the temperature of the hydrogen provided by the gas supply device 1 is greater than the first preset temperature, the first pipeline 23 is opened by the first control valve 24 and the second pipeline 25 is closed by the second control valve 26, so that the hydrogen provided by the gas supply device 1 exchanges heat with the precooling heat exchanger 21 through the first pipeline 23, thereby obtaining hydrogen meeting the first preset temperature, thereby achieving that the temperature of the hydrogen entering the test chamber 3 meets the test requirements; when the temperature of the hydrogen provided by the gas supply device 1 is lower than the first preset temperature, the first pipeline 23 is closed by the first control valve 24 and the second control valve 26 is connected to the second pipeline 25, so that the hydrogen provided by the gas supply device 1 exchanges heat with the preheating heat exchanger 22 through the second pipeline 25, thereby obtaining hydrogen meeting the first preset temperature, thereby achieving that the temperature of the hydrogen entering the test chamber 3 meets the test requirements.

[0053] In some embodiments of the present invention, Figure 1 As shown, the non-metallic material and hydrogen compatibility detection system 100 further includes a third pipeline 5. One end of the third pipeline 5 is connected to the heat exchange device 2, and the other end is connected to the external environment. The third pipeline 5 is provided with a third control valve 51.

[0054] It can be understood that when the non-metallic material and hydrogen compatibility detection system 100 is used to test the non-metallic material, the non-metallic material to be tested is first placed in the test chamber 3, the third pipeline 5 is opened through the third control valve 51, and the gas supply device 1 inputs hydrogen under the nominal working pressure to the heat exchange device 2. The heat exchange device 2 exchanges heat with the hydrogen to change the temperature of the hydrogen entering the test chamber 3. When the temperature and pressure of the hydrogen entering the test chamber 3 meet the experimental requirements, the third pipeline 5 is closed through the third control valve 51 to allow hydrogen that meets the experimental temperature and pressure requirements to enter the test chamber 3, thereby improving the reliability of the test.

[0055] At the same time, the timing starts when the third control valve 51 closes the third pipeline 5, and after the third control valve 51 closes the third pipeline 5 for a first preset period, the third pipeline 5 is opened by the third control valve 51, so as to exhaust the hydrogen in the non-metallic material parts and the hydrogen compatibility detection system 100 as much as possible, and reduce the pressure in the test chamber 3 to atmospheric pressure, so as to further detect the reliability and service life of the non-metallic material parts, and further improve the reliability of the non-metallic material parts and the hydrogen compatibility detection system 100.

[0056] In some embodiments of the present invention, Figure 1 As shown, the heat exchange device 2 and the test chamber 3 are connected through the fourth pipeline 4, and the fourth pipeline 4 is provided with a first pressure detection device 41 and a temperature detection device 42. It can be understood that the first pressure detection device 41 detects the pressure of the hydrogen on the fourth pipeline 4, and the temperature detection device 42 detects the temperature of the hydrogen on the fourth pipeline 4. Since the detection values ​​of the first pressure detection device 41 and the temperature detection device 42 are used to detect whether the hydrogen entering the test chamber 3 meets the temperature and pressure requirements of the test.

[0057] Further, one end of the third pipeline 5 is connected to the fourth pipeline 4, and the other end is connected to the external environment. The third control valve 51 is provided on the third pipeline 5. Thus, the third pipeline 5 is opened through the third control valve 51, and the gas supply device 1 inputs hydrogen under the nominal working pressure to the heat exchange device 2. The heat exchange device 2 exchanges heat with the hydrogen to change the temperature of the hydrogen entering the test chamber 3. The detection values ​​of the first pressure detection device 41 and the temperature detection device 42 are used to detect whether the hydrogen entering the test chamber 3 meets the temperature and pressure requirements of the test, and the hydrogen that does not meet the temperature and pressure requirements of the experiment flows to the external environment through the third pipeline 5. When the temperature and pressure of the hydrogen entering the test chamber 3 meet the experimental requirements, the third pipeline 5 is closed through the third control valve 51, so that the hydrogen that meets the temperature and pressure requirements of the experiment enters the test chamber 3, thereby improving the reliability of the test.

[0058] In some embodiments of the present invention, Figure 1 As shown, the non-metallic material component and hydrogen compatibility detection system 100 further includes a fifth pipeline 6. One end of the fifth pipeline 6 is connected to the fourth pipeline 4, and the other end is connected to the external environment. A safety valve 61 is provided on the fifth pipeline 6. Therefore, when the third control valve 51 closes the third pipeline 5, when the non-metallic material component and hydrogen compatibility detection system 100 exceeds a preset maximum pressure value, the safety valve 61 is opened to discharge the hydrogen in the non-metallic material component and hydrogen compatibility detection system 100 to the external environment through the fifth pipeline 6, thereby reducing the pressure of the non-metallic material component and hydrogen compatibility detection system 100 and ensuring safety.

[0059] It should be noted that the safety valve 61 can be used to detect the pressure of the non-metallic material part and the hydrogen compatibility detection system 100, so that when the safety valve 61 detects that the pressure of the non-metallic material part and the hydrogen compatibility detection system 100 exceeds a preset maximum pressure value, the safety valve 61 is opened, or, the safety valve 61 is communicated with the first pressure sensor arranged on the fourth pipeline 4, so that when the first pressure sensor detects that the pressure of the non-metallic material part and the hydrogen compatibility detection system 100 exceeds a preset maximum pressure value, the safety valve 61 is opened.

[0060] In some embodiments of the present invention, Figure 1 As shown, the outlet of the gas supply device 1 is connected to the heat exchange device 2 through the sixth pipeline 16, and the sixth pipeline 16 is provided with a fourth control valve 161. It can be understood that in the process of applying the non-metallic material and hydrogen compatibility detection system 100 to test the non-metallic material, the sixth pipeline 16 is first opened through the fourth control valve 161, so that the hydrogen provided by the gas supply device 1 can flow to the heat exchange device 2 through the sixth pipeline 16, and the temperature of the hydrogen entering the test chamber 3 is changed through heat exchange between the heat exchange device 2 and the hydrogen.

[0061] Furthermore, the heat exchange device 2 and the test chamber 3 are connected via a fourth pipeline 4 , and a first pressure detection device 41 and a temperature detection device 42 are provided on the fourth pipeline 4 . The non-metallic material and hydrogen compatibility detection system 100 also includes a third pipeline 5 .

[0062] Therefore, firstly, the fourth control valve 161 is controlled to open the sixth pipeline 16 and the third control valve 51 is controlled to open the third pipeline 5, so that the hydrogen under the nominal working pressure provided by the gas supply device 1 can flow to the heat exchange device 2 through the sixth pipeline 16, and the temperature of the hydrogen entering the test chamber 3 is changed by heat exchange with the hydrogen through the heat exchange device 2. The temperature of the gas in the fourth pipeline 4 reaches the first preset temperature value and the pressure reaches the first preset pressure value (hydrogen pressure under the nominal working pressure) through the first pressure detection device 41 and the temperature detection device 42. The third control valve 51 is controlled to close the third pipeline 5 and start timing. After the third control valve 51 closes the third pipeline 5 for the first preset time, the third control valve 51 is used to open the third pipeline 5 and the fourth control valve 161 is used to close the sixth pipeline 16, so as to exhaust the hydrogen in the non-metallic material part and the hydrogen compatibility detection system 100 as much as possible, and the pressure in the test chamber 3 is reduced to atmospheric pressure, so as to realize the test process of the non-metallic material part and the hydrogen under the nominal working pressure at the first preset temperature value.

[0063] The fourth control valve 161 is controlled again to open the sixth pipeline 16 and the third control valve 51 is controlled to open the third pipeline 5, so that the hydrogen under the nominal working pressure provided by the gas supply device 1 can flow to the heat exchange device 2 through the sixth pipeline 16, and the temperature of the hydrogen entering the test chamber 3 is changed by heat exchange with the hydrogen through the heat exchange device 2. The temperature of the gas in the fourth pipeline 4 reaches the second preset temperature value and the pressure reaches the first preset pressure value through the first pressure detection device 41 and the temperature detection device 42. The third control valve 51 is controlled to close the third pipeline 5 and start timing. After the third control valve 51 closes the third pipeline 5 for the first preset time, the third control valve 51 is used to open the third pipeline 5 and the fourth control valve 161 is used to close the sixth pipeline 16, so as to exhaust the hydrogen in the non-metallic material part and the hydrogen compatibility detection system 100 as much as possible, and the pressure in the test chamber 3 is reduced to atmospheric pressure, so as to realize the test process of the non-metallic material part and the hydrogen under the nominal working pressure at the second preset temperature value.

[0064] Finally, the non-metallic material parts in the test chamber 3 are taken out and tested, so that the non-metallic material parts and hydrogen under the nominal working pressure are tested by the non-metallic material part and hydrogen compatibility detection system 100 respectively at the first preset temperature value and the second preset temperature for the first preset time.

[0065] In some embodiments of the present invention, Figure 1 As shown, the non-metallic material and hydrogen compatibility detection system 100 further includes a gas replacement device 7, and the outlet of the gas replacement device 7 is connected to the heat exchange device 2. It can be understood that in the process of applying the non-metallic material and hydrogen compatibility detection system 100 to the non-metallic material, in order to ensure that the air in the non-metallic material and hydrogen compatibility detection system 100 is emptied, before the non-metallic material and hydrogen compatibility detection system 100 is also delivered to the non-metallic material and hydrogen compatibility detection system 100 through the gas supply device 1, nitrogen is delivered to the non-metallic material and hydrogen compatibility detection system 100 through the gas replacement device 7, so that the nitrogen enters the test chamber 3 through the heat exchange device 2, thereby realizing the nitrogen non-metallic material and hydrogen compatibility detection system 100 The air in the gas exchanger 2 is ensured to ensure the safety of the test. At the same time, during the process of nitrogen flowing in the non-metallic material and hydrogen compatibility detection system 100, leakage detection can be performed in real time to further ensure the safety and reliability of subsequent experiments.

[0066] Further, the gas replacement device 7 is connected to the sixth pipeline 16 through the seventh pipeline 8, and the fifth control valve 81 is provided on the seventh pipeline 8. The connection point between the seventh pipeline 8 and the sixth pipeline 16 is located between the fourth control valve 161 and the heat exchange device 2. Therefore, the sixth pipeline 16 is closed by the fourth control valve 161, and the fifth control valve 81 is controlled to open the seventh pipeline 8, so that the nitrogen in the gas replacement device 7 enters the sixth pipeline 16 through the sixth pipeline 16, and flows to other pipelines and devices of the non-metallic material part and the hydrogen compatibility detection system 100 through the sixth pipeline 16, thereby realizing the nitrogen non-metallic material part and the air in the hydrogen compatibility detection system 100, and ensuring the safety of the test. At the same time, when it is determined that the non-metallic material part and the hydrogen compatibility detection system 100 are full of nitrogen, the fifth control valve 81 is controlled to close the seventh pipeline 8, thereby blocking the nitrogen from flowing from the seventh pipeline 8 into the nitrogen non-metallic material part and the hydrogen compatibility detection system 100, and ensuring the reliability of subsequent experiments.

[0067] In some embodiments of the present invention, Figure 1 As shown, the non-metallic material and hydrogen compatibility detection system 100 also includes a hydrogen storage bottle 9, a compressor 10 and a high-pressure gas cylinder 11 located between the gas supply device 1 and the heat exchange device 2, the inlet of the hydrogen storage bottle 9 is connected to the outlet of the gas supply device 1, the inlet of the compressor 10 is connected to the outlet of the hydrogen storage bottle 9, the inlet of the high-pressure gas cylinder 11 is connected to the outlet of the compressor 10, and the outlet of the high-pressure gas cylinder 11 is connected to the heat exchange device 2.

[0068] It can be understood that the hydrogen provided by the gas supply device 1 first enters the hydrogen storage bottle 9 for storage, then flows to the compressor 10 through the outlet of the hydrogen storage bottle 9 and pressurizes the hydrogen through the compressor before flowing to the high-pressure gas cylinder 11 for storage. Finally, the high-pressure hydrogen flows from the outlet of the high-pressure gas cylinder 11 to the heat exchange device 2. Thus, the storage of hydrogen by the hydrogen storage bottle 9 can ensure that there is sufficient hydrogen in subsequent tests and the accuracy of the experiment. At the same time, when the pressure of the hydrogen provided by the gas supply device 1 does not reach the pressure of the hydrogen described in the test, the hydrogen is pressurized by the compressor 10 and then flows to the high-pressure gas cylinder 11 for storage, thereby ensuring that the pressure of the hydrogen in the test chamber 3 meets the experimental requirements. In addition, the storage of high-pressure hydrogen by the high-pressure gas cylinder 11 can ensure that there is sufficient hydrogen in subsequent tests and the accuracy of the experiment.

[0069] In some embodiments of the present invention, Figure 1 As shown, the ninth pipeline 13 is provided with a second pressure detection device 131. Therefore, the second pressure detection device 131 detects the pressure of the hydrogen flowing out of the high-pressure gas cylinder 11, and the pressurization degree of the hydrogen by the compressor 10 is controlled according to the comparison between the detection value of the second pressure detection device 131 and the hydrogen pressure under the nominal working pressure, so as to ensure that the hydrogen flowing into the test chamber 3 can reach the hydrogen pressure under the nominal working pressure.

[0070] Furthermore, a flow meter 132 is provided on the ninth pipeline 13 , and thus the flow rate of the high-pressure hydrogen on the ninth pipeline 13 is recorded by the flow meter 132 , thereby further improving the reliability of the non-metallic material and hydrogen compatibility detection system 100 .

[0071] In some embodiments of the present invention, Figure 1 As shown, the non-metallic material and hydrogen compatibility detection system 100 also includes a test environment chamber 14. Among them, the test chamber 3 is located in the test environment chamber, and the inner wall surface of the test environment chamber 14 is provided with a hydrogen and oxygen concentration detection device 141. It can be understood that when the non-metallic material and hydrogen compatibility detection system 100 tests the non-metallic material, hydrogen is transported to the test chamber 3 through a pipeline. Therefore, when the hydrogen and oxygen concentration detection device 141 detects that the oxygen value in the test environment chamber is greater than the preset oxygen concentration value, or the hydrogen value in the test environment chamber is greater than the preset hydrogen concentration value, it indicates that the test chamber 3 is leaking or the test environment chamber is in contact with the external environment, thereby affecting the safety of the non-metallic material and hydrogen compatibility detection system 100 and the accuracy of the detection results.

[0072] Furthermore, the hydrogen and oxygen concentration detection device 141 is disposed on the upper wall surface of the test environment chamber, so as to better detect the hydrogen value and oxygen value in the test environment chamber.

[0073] In some embodiments of the present invention, Figure 1 As shown, the non-metallic material and hydrogen compatibility detection system 100 further includes an exhaust fan 15. The inlet of the exhaust fan 15 is connected to the test environment chamber 14, and the exhaust fan 15 is in communication with the hydrogen and oxygen concentration detection device 141. Therefore, when the hydrogen and oxygen concentration detection device 141 detects that the oxygen value in the test environment chamber is greater than the preset oxygen concentration value, or the hydrogen value in the test environment chamber is greater than the preset hydrogen concentration value, the exhaust fan 15 is controlled to operate to achieve emergency emptying, thereby ensuring the safety of the non-metallic material and hydrogen compatibility detection system 100.

[0074] A non-metallic material part and hydrogen compatibility detection system 100 according to a specific embodiment of the present invention will be described in detail below with reference to the drawings. It should be understood that the following description is only exemplary and should not be construed as limiting the present invention.

[0075] The non-metallic material and hydrogen compatibility detection system 100 comprises a gas supply device 1, a heat exchange device 2, a test chamber 3, a hydrogen storage bottle 9, a pressurizer 10 and a high-pressure gas cylinder 11.

[0076] The gas supply device 1 is used to provide hydrogen, one end of the heat exchange device 2 is connected to the outlet of the gas supply device 1, the other end of the heat exchange device 2 is connected to the test chamber 3, the non-metallic material part is suitable for being placed in the test chamber 3, the heat exchange device 2 and the test chamber 3 are connected through a fourth pipeline 4, the fourth pipeline 4 is provided with a first pressure detection device 41 and a temperature detection device 42, one end of the third pipeline 5 is connected to the fourth pipeline 4, and the other end is connected to the external environment, the third pipeline 5 is provided with a third control valve 51, one end of the fifth pipeline 6 is connected to the fourth pipeline 4, and the other end is connected to the external environment, the fifth pipeline 6 is provided with a safety valve 61, the outlet of the gas supply device 1 is connected to the heat exchange device 2 through a sixth pipeline 16, and the sixth pipeline 16 is provided with There is a fourth control valve 161, and the gas replacement device 7 is used to provide nitrogen. The gas replacement device 7 is connected to the sixth pipeline 16 through the seventh pipeline 8. The seventh pipeline 8 is provided with a fifth control valve 81. The connection between the seventh pipeline 8 and the sixth pipeline 16 is located between the fourth control valve 161 and the heat exchange device 2. The hydrogen storage bottle 9 is arranged on the sixth pipeline 16 and is located between the fourth control valve 161 and the heat exchange device 2. The outlet of the gas supply device 1 is connected to one end of the compressor 10, and the other end of the compressor 10 is connected to the heat exchange device 2. One end of the high-pressure gas cylinder 11 is connected to the compressor 10 through the eighth pipeline 12, and the other end is connected to the heat exchange device 2 through the ninth pipeline 13. The eighth pipeline 12 is provided with a sixth control valve 121.

[0077] When the non-metallic material and hydrogen compatibility detection system 100 is used to test the non-metallic material, firstly, the fourth control valve 161 is controlled to open the sixth pipeline 16, the sixth control valve 121 is controlled to open the eighth pipeline 12, the third control valve 51 is controlled to open the third pipeline 5, the gas supply device 1 delivers hydrogen through the sixth pipeline 16 and stores it in the hydrogen storage bottle 9. After the hydrogen storage bottle 9 stores hydrogen to a certain content, the hydrogen in the hydrogen storage bottle 9 flows into the compressor 10 through the sixth pipeline 16 for pressurization. The pressurized hydrogen only flows into the high-pressure gas cylinder 11 through the eighth pipe for storage. After the high-pressure gas cylinder 11 stores hydrogen to a certain content, the high-pressure hydrogen in the high-pressure gas cylinder 11 flows into the heat exchange device 2 through the ninth pipeline 13. After the hydrogen exchanges heat with the heat exchange device 2, it flows to the fourth pipeline 4. The temperature of the gas in the fourth pipeline 4 reaches the first preset temperature value and the pressure reaches the first preset pressure value (hydrogen pressure under the nominal working pressure) through the first pressure detection device 41 and the temperature detection device 42, and the third control valve 51 is controlled to close the third pipeline 5 and start timing. After the third control valve 51 closes the third pipeline 5 for the first preset time, the third pipeline 5 is opened through the third control valve 51, the fourth control valve 161 closes the sixth pipeline 16, and the sixth control valve 121 closes the eighth pipeline 12, so as to exhaust the hydrogen in the non-metallic material part and the hydrogen compatibility detection system 100 as much as possible, and the pressure in the test chamber 3 is reduced to atmospheric pressure, so as to realize the test process of the non-metallic material part and the hydrogen under the nominal working pressure at the first preset temperature value.

[0078] The fourth control valve 161 is controlled again to open the sixth pipeline 16, the sixth control valve 121 is controlled to open the eighth pipeline 12, and the third control valve 51 is controlled to open the third pipeline 5, so that the hydrogen gas under the nominal working pressure provided by the gas supply device 1 can flow to the heat exchange device 2 through the sixth pipeline 16, and the temperature of the hydrogen gas entering the test chamber 3 is changed by heat exchange with the hydrogen gas through the heat exchange device 2, and the temperature of the gas in the fourth pipeline 4 reaches the second preset temperature value and the pressure reaches the first preset pressure value through the first pressure detection device 41 and the temperature detection device 42. , control the third control valve 51 to close the third pipeline 5 and start timing. After the third control valve 51 closes the third pipeline 5 for the first preset period, the third control valve 51 is used to open the third pipeline 5, the fourth control valve 161 closes the sixth pipeline 16, and the sixth control valve 121 closes the eighth pipeline 12, so as to exhaust the hydrogen between the non-metallic material part and the hydrogen compatibility detection system 100 as much as possible, and reduce the pressure in the test chamber 3 to atmospheric pressure, thereby realizing the test process of the non-metallic material part and the hydrogen under the nominal working pressure at the second preset temperature value.

[0079] Finally, the non-metallic material parts in the test chamber 3 are taken out and tested, so that the non-metallic material parts and hydrogen under the nominal working pressure are tested by the non-metallic material part and hydrogen compatibility detection system 100 respectively at the first preset temperature value and the second preset temperature for the first preset time.

[0080] In order to ensure the safety and accuracy of the test, the non-metallic material and hydrogen compatibility detection system 100 further includes a gas replacement device 7 , a test environment chamber 14 and an exhaust fan 15 .

[0081] The gas replacement device 7 is used to provide nitrogen, and the gas replacement device 7 is connected to the sixth pipeline 16 through the seventh pipeline 8. The seventh pipeline 8 is provided with a fifth control valve 81, and the connection between the seventh pipeline 8 and the sixth pipeline 16 is located between the fourth control valve 161 and the heat exchange device 2. Before the fourth control valve 161 opens the sixth pipeline 16, the fifth control valve 81 is controlled to open the seventh pipeline 8, so that the nitrogen in the gas replacement device 7 enters the sixth pipeline 16 through the sixth pipeline 16, and flows to other pipelines and devices of the non-metallic material and hydrogen compatibility detection system 100 through the sixth pipeline 16, thereby realizing the nitrogen non-metallic material and the air in the hydrogen compatibility detection system 100.

[0082] The test chamber 3 is located in the test environment chamber, and a hydrogen and oxygen concentration detection device 141 is provided on the inner wall of the test environment chamber 14. The inlet of the exhaust fan 15 is connected to the test environment chamber 14, and the exhaust fan 15 is in communication connection with the hydrogen and oxygen concentration detection device 141. Therefore, when the hydrogen and oxygen concentration detection device 141 detects that the oxygen value in the test environment chamber is greater than the preset oxygen concentration value, or the hydrogen value in the test environment chamber is greater than the preset hydrogen concentration value, the exhaust fan 15 is controlled to operate to achieve emergency emptying, thereby ensuring the safety of the non-metallic material part and the hydrogen compatibility detection system 100.

[0083] One end of the fifth pipeline 6 is connected to the fourth pipeline 4, and the other end is connected to the external environment. A safety valve 61 is provided on the fifth pipeline 6. Therefore, when the third control valve 51 closes the third pipeline 5, when the non-metallic material component and the hydrogen compatibility detection system 100 exceed the preset maximum pressure value, the safety valve 61 is opened to discharge the hydrogen in the non-metallic material component and the hydrogen compatibility detection system 100 to the external environment through the fifth pipeline 6, thereby reducing the pressure of the non-metallic material component and the hydrogen compatibility detection system 100 to ensure safety.

[0084] The non-metallic material and hydrogen compatibility detection system 100 also includes a controller, which is respectively connected to the first control valve 24, the second control valve 26, the third control valve 51, the fourth control valve 161, the fifth control valve 81, the first pressure detection device 41, the second pressure detection device 131, the flow meter 132, the pressurizer 10 and the temperature detection device 42 for real-time data collection. Thus, the automation of the non-metallic material and hydrogen compatibility detection system 100 experiment is fully realized through the controller. Furthermore, the controller adopts Siemens 1200 series PLC.

[0085] A first one-way valve 162 is provided on the sixth pipeline 16, and the first one-way valve 162 is located between the gas supply device 1 and the hydrogen storage bottle 9. The first one-way valve 162 ensures that the hydrogen provided by the gas supply device 1 flows to the hydrogen storage bottle 9. A second one-way valve is provided on the eighth pipeline 12, and the second one-way valve is arranged between the heat exchange device 2 and the high-pressure gas cylinder 11. The second one-way valve ensures that the hydrogen flowing out of the high-pressure gas cylinder 11 flows to the heat exchange device 2. A third one-way valve 52 is provided on the third pipeline 5. Along the flow direction of the gas flow, the third one-way valve 52 is located downstream of the third control valve 51. The third one-way valve 52 ensures that the gas is emptied to the external environment. A fourth one-way valve 82 is provided on the seventh pipeline 8, and the third one-way valve 52 is located between the fifth control valve 81 and the gas replacement device 7. The third one-way valve 52 ensures that the nitrogen flowing out of the gas replacement device 7 flows to the fifth control valve 81.

[0086] The following describes a method for detecting the compatibility of a non-metallic material with hydrogen according to an embodiment of the present invention with reference to the accompanying drawings.

[0087] According to the method for detecting compatibility between a non-metallic material and hydrogen in an embodiment of the present invention, Figure 1 and Figure 2 As shown, the method for detecting the compatibility of a non-metallic material with hydrogen is performed using the above-mentioned non-metallic material with hydrogen compatibility detection system 100, and the detection method includes:

[0088] Hydrogen is supplied to the test chamber 3 through the gas supply device 1. It can be understood that the gas supply device 1 is used to supply hydrogen, and non-metallic material parts are placed in the test chamber 3. When the non-metallic material parts are tested using the hydrogen compatibility detection system 100, hydrogen enters the test chamber 3 through the outlet of the gas supply device 1 and the heat exchange device 2 in sequence.

[0089] Furthermore, the pressure of the hydrogen provided by the gas supply device 1 can directly meet the experimental requirements, or the pressure of the hydrogen provided by the gas supply device 1 is less than the experimental requirements. The outlet of the gas supply device 1 is connected to one end of the compressor 10, and the other end of the compressor 10 is connected to the heat exchange device 2. Thus, the hydrogen flows from the outlet of the gas supply device 1 to the compressor 10 in turn, and after being pressurized by the compressor 10, it enters the test chamber 3 through the heat exchange device 2.

[0090] The temperature and pressure of the hydrogen gas entering the test chamber 3 are obtained. Thus, by obtaining the values ​​of the temperature and pressure of the gas in the test chamber 3, it is determined whether the temperature and pressure of the gas in the test chamber 3 meet the experimental requirements.

[0091] The temperature of the hydrogen entering the test chamber 3 is adjusted by the heat exchange device 2. It can be understood that the hydrogen flowing through the heat exchange device 2 flows into the test chamber 3 after heat exchange, thereby changing the temperature of the hydrogen entering the test chamber 3, thereby realizing the compatibility test of the non-metallic material parts and the hydrogen under the nominal working pressure at different temperatures.

[0092] Determine that the temperature of the hydrogen entering the test chamber 3 reaches the first preset temperature value and the pressure reaches the first preset pressure value. Thus, the temperature of the hydrogen in the test chamber 3 obtained through the above steps reaches the first preset temperature value and the pressure reaches the first preset pressure value, indicating that the hydrogen in the test chamber 3 meets the experimental requirements at this time.

[0093] After determining that the temperature of the hydrogen reaches the first preset temperature value and the pressure reaches the first preset pressure value and runs for the first preset time, the gas supply device 1 is controlled to stop supplying hydrogen to the test chamber 3 and to exhaust the hydrogen in the test chamber 3. It can be understood that when the hydrogen in the test chamber 3 meets the experimental requirements, the timing starts, and after determining that the temperature of the hydrogen reaches the first preset temperature value and the pressure reaches the first preset pressure value and runs for the first preset time, the gas supply device 1 is controlled to stop supplying hydrogen to the test chamber 3 and to exhaust the hydrogen in the test chamber 3, thereby simulating the application of the non-metallic material part in the simulation test of the high-pressure hydrogen storage system, and facilitating the subsequent staff to take out the non-metallic material part in the test chamber 3.

[0094] The non-metallic material parts in the test chamber 3 are taken out and tested, for example, the volume expansion rate and mass loss rate of the non-metallic material parts are measured. Thus, the reliability and service life of the non-metallic material parts are determined by testing the non-metallic material parts, thereby realizing the hydrogen compatibility test of the non-metallic material parts in the high-pressure hydrogen storage system.

[0095] According to the method for detecting the compatibility of non-metallic material parts with hydrogen according to the embodiment of the present invention, a system 100 for detecting the compatibility of non-metallic material parts with hydrogen is used, hydrogen is provided to the test chamber 3 through the gas supply device 1, the temperature and pressure of the hydrogen entering the test chamber 3 are obtained, the heat exchange device 2 adjusts the temperature of the hydrogen entering the test chamber 3, and determines that the temperature of the hydrogen entering the test chamber 3 reaches a first preset temperature value and the pressure reaches a first preset pressure value, and after running for a first preset time after determining that the temperature of the hydrogen reaches the first preset temperature value and the pressure reaches the first preset pressure value, the gas supply device 1 is controlled to stop supplying hydrogen to the test chamber 3, and the hydrogen in the test chamber 3 is emptied to take out the non-metallic material parts located in the test chamber 3, and the non-metallic material parts are detected, for example, the volume expansion rate and mass loss rate of the non-metallic material parts are measured, thereby realizing the hydrogen compatibility test of the non-metallic material parts in the high-pressure hydrogen storage system.

[0096] In some embodiments of the present invention, Figure 3 As shown, before taking out the non-metallic material piece in the test chamber 3 and testing the non-metallic material piece, the testing method further includes:

[0097] Hydrogen is supplied to the test chamber 3 again through the gas supply device 1. It is understandable that, since the non-metallic material is at different temperatures when the high-pressure hydrogen storage system using the non-metallic material is in different scenarios, it is necessary to test the compatibility of the non-metallic material with hydrogen at the same nominal working pressure at different temperatures. Therefore, hydrogen is supplied again through the gas supply device 1 so that the hydrogen enters the test chamber 3 through the outlet of the gas supply device 1 and the heat exchange device 2 in turn.

[0098] The temperature and pressure of the hydrogen gas entering the test chamber 3 are obtained. Thus, by obtaining the values ​​of the temperature and pressure of the gas in the test chamber 3, it is determined whether the temperature and pressure of the gas in the test chamber 3 meet the experimental requirements.

[0099] The temperature of the hydrogen entering the test chamber 3 is adjusted by the heat exchange device 2. It can be understood that the hydrogen flowing through the heat exchange device 2 flows into the test chamber 3 after heat exchange, thereby changing the temperature of the hydrogen entering the test chamber 3, thereby realizing the compatibility test of the non-metallic material parts and the hydrogen under the nominal working pressure at different temperatures.

[0100] It is determined that the temperature of the hydrogen entering the test chamber 3 reaches the second preset temperature value and the pressure reaches the first preset pressure value, and the second preset temperature value is less than the first preset temperature value. It can be understood that the second preset temperature value is less than the first preset temperature value, and the hydrogen pressure of the two tests reaches the first preset pressure value, so as to test the compatibility of non-metallic material parts with hydrogen at different temperatures and the same nominal working pressure. Therefore, the temperature of the hydrogen in the test chamber 3 obtained by the above steps reaches the second preset temperature value and the pressure reaches the first preset pressure value, indicating that the hydrogen in the test chamber 3 meets the experimental requirements at this time.

[0101] After it is determined that the temperature of the hydrogen reaches the second preset temperature value and the pressure reaches the first preset pressure value and runs for the first preset time, the gas supply device 1 is controlled to stop supplying hydrogen to the test chamber 3, and the hydrogen in the test chamber 3 is exhausted. Thus, through this step, it is achieved that the non-metallic material parts are tested under different temperatures and the same nominal working pressure and are placed in hydrogen for the same time.

[0102] In some embodiments of the present invention, Figure 4 As shown, the non-metallic material and hydrogen compatibility detection system further includes a gas replacement device 7 for providing nitrogen, the outlet of the gas replacement device 7 is connected to the heat exchange device 2, and before hydrogen is provided to the test chamber 3 through the gas supply device 1, the detection method further includes:

[0103] Nitrogen is supplied to the test chamber 3 through the gas replacement device 7. It can be understood that in the process of applying the non-metallic material component and hydrogen compatibility detection system 100 to the non-metallic material component, in order to ensure that the air in the non-metallic material component and hydrogen compatibility detection system 100 is emptied, before the non-metallic material component and hydrogen compatibility detection system 100 is supplied with hydrogen through the gas supply device 1, nitrogen is supplied to the non-metallic material component and hydrogen compatibility detection system 100 through the gas replacement device 7, so that the nitrogen enters the test chamber 3 through the heat exchange device 2, thereby achieving nitrogen non-metallic material component and hydrogen compatibility detection system 100 air, ensuring the safety of the test.

[0104] After determining that the non-metallic material and hydrogen compatibility detection system 100 are filled with nitrogen, the gas replacement device 7 is controlled to stop supplying nitrogen to the test chamber 3, and the nitrogen in the non-metallic material and hydrogen compatibility detection system 100 is emptied. Thus, after the air in the hydrogen compatibility detection system 100 is completely replaced through the above steps, the gas in the non-metallic material and hydrogen compatibility detection system 100 is emptied, and then the test is started to ensure the safety of the test.

[0105] Further, after it is determined that the non-metallic material component and the hydrogen compatibility detection system 100 is filled with nitrogen, a leakage detection is performed on the non-metallic material component and the hydrogen compatibility detection system 100. Thus, this step ensures that the non-metallic material component and the hydrogen compatibility detection system 100 has no leakage, thereby improving the reliability and safety of subsequent experiments.

[0106] In some embodiments of the present invention, the outlet of the gas supply device 1 is connected to the heat exchange device 2 through a sixth pipeline 16, and a fourth control valve 161 is provided on the sixth pipeline 16. Providing hydrogen to the test chamber 3 through the gas supply device 1 includes:

[0107] The fourth control valve 161 is controlled to open the sixth pipeline 16. Thus, the sixth pipeline 16 is opened by the fourth control valve 161, so that the hydrogen flowing out of the outlet of the gas supply device 1 can flow into the heat exchange device 2 through the sixth pipeline 16. At the same time, during the implementation process, the sixth pipeline 16 is closed by the fourth control valve 161 to ensure that the hydrogen in the non-metallic material part and the hydrogen compatibility detection system 100 is emptied.

[0108] In some embodiments of the present invention, the heat exchange device 2 and the test chamber 3 are connected through the fourth pipeline 4, one end of the third pipeline 5 is connected to the fourth pipeline 4, and the other end is connected to the external environment, and the third pipeline 5 is provided with a third control valve 51. The detection method further includes:

[0109] The third control valve 51 is controlled to open the third pipeline 5. It can be understood that, since the temperature of the gas in the fourth pipeline 4 has reached the first preset temperature value and / or the pressure has not reached the first preset pressure value at this time, it is necessary to wait for the temperature and pressure of the gas in the fourth pipeline 4 to meet the experimental requirements. Therefore, the third pipeline 5 is opened by the third control valve 51, so that the hydrogen flowing out of the heat exchange device 2 flows into the third pipeline 5 and the test chamber 3 through the fourth pipeline 4.

[0110] The temperature and pressure of the gas in the fourth pipeline 4 are obtained. Therefore, by obtaining the values ​​of the temperature and pressure of the gas in the fourth pipeline 4, it is determined whether the temperature and pressure of the gas in the fourth pipeline 4 meet the experimental requirements.

[0111] Furthermore, a first pressure detection device 41 and a temperature detection device 42 are provided on the fourth pipeline 4. It can be understood that the first pressure detection device 41 detects the pressure of the hydrogen on the fourth pipeline 4, and the temperature detection device 42 detects the temperature of the hydrogen on the fourth pipeline 4.

[0112] Determine that the temperature of the gas in the fourth pipeline 4 reaches the first preset temperature value and the pressure reaches the first preset pressure value. Thus, the temperature of the hydrogen in the fourth pipeline 4 obtained through the above steps reaches the first preset temperature value and the pressure reaches the first preset pressure value, indicating that the hydrogen in the fourth pipeline 4 meets the experimental requirements at this time.

[0113] The third control valve 51 is controlled to close the third pipeline 5. Thus, by closing the third pipeline 5 through the third control valve 51, all the hydrogen in the fourth pipeline 4 that meets the experimental requirements enters the test chamber 3, thereby ensuring the reliability of the non-metallic material and hydrogen compatibility detection method.

[0114] In some embodiments of the present invention, the detection method further comprises:

[0115] After the third control valve 51 closes the third pipeline 5 for the first preset time, it is understood that when the hydrogen in the fourth pipeline 4 meets the experimental requirements, the third control valve 51 is controlled to close the third pipeline 5, and the timing starts from this time. After the third control valve 51 closes the third pipeline 5 for the first preset time, the experiment ends.

[0116] The fourth control valve 161 is controlled to close the sixth pipeline 16, and the third control valve 51 is controlled to open the third pipeline 5. Thus, the third pipeline 5 is opened by the third control valve 51, so that the hydrogen in the non-metallic material part and hydrogen compatibility detection system 100 flows from the third pipeline 5 to the external environment, and the sixth pipeline 16 is closed by the fourth control valve 161 to prevent the hydrogen provided by the gas supply device 1 from flowing into the test chamber 3 through the sixth pipeline 16 and the fourth pipeline 4, so that the pressure in the test chamber 3 is reduced to atmospheric pressure.

[0117] Furthermore, the detection method also includes:

[0118] Control the fourth control valve 161 to open the sixth pipeline 16, and control the third control valve 51 to open the third pipeline 5;

[0119] Obtaining the temperature and pressure of the gas in the fourth pipeline 4;

[0120] Determine that the temperature of the gas in the fourth pipeline 4 reaches a second preset temperature value and the pressure reaches a first preset pressure value. The second preset value is different from the first preset value;

[0121] Control the third control valve 51 to close the third pipeline 5;

[0122] After determining that the third control valve 51 closes the third pipeline 5 for a first preset time;

[0123] The fourth control valve 161 is controlled to close the sixth pipeline 16 , and the third control valve 51 is controlled to open the third pipeline 5 .

[0124] Thus, the non-metallic material part and the hydrogen gas under the nominal working pressure are tested at the first preset temperature value and the second preset temperature value respectively. Finally, the non-metallic material part in the test chamber 3 is taken out and tested, so as to achieve the test of the non-metallic material part and the hydrogen gas under the nominal working pressure being kept at the first preset temperature value and the second preset temperature for the first preset time respectively by the non-metallic material part and hydrogen gas compatibility detection system 100.

[0125] In some embodiments of the present invention, the gas replacement device 7 is connected to the sixth pipeline 16 through the seventh pipeline 8, the gas replacement device 7 is used to provide nitrogen, the seventh pipeline 8 is provided with a fifth control valve 81, and the connection between the seventh pipeline 8 and the sixth pipeline 16 is located between the fourth control valve 161 and the heat exchange device 2. Before controlling the fourth control valve 161 to open the sixth pipeline 16, the detection method further includes:

[0126] The fourth control valve 161 is controlled to close the sixth pipeline 16, and the fifth control valve 81 is controlled to open the seventh pipeline 8. It can be understood that in the process of applying the non-metallic material component and the hydrogen compatibility detection system 100 to the non-metallic material component, in order to ensure that the air in the non-metallic material component and the hydrogen compatibility detection system 100 is emptied, the sixth pipeline 16 is closed by the fourth control valve 161, and the fifth control valve 81 is controlled to open the seventh pipeline 8, so that the nitrogen in the gas replacement device 7 enters the sixth pipeline 16 through the sixth pipeline 16, and flows to other pipelines and devices of the non-metallic material component and the hydrogen compatibility detection system 100 through the sixth pipeline 16, so as to realize the nitrogen non-metallic material component and the hydrogen compatibility detection system 100 The air in the hydrogen compatibility detection system 100 is ensured. At the same time, during the flow of nitrogen in the non-metallic material component and the hydrogen compatibility detection system 100, leakage detection can be performed in real time to further ensure the safety and reliability of subsequent experiments.

[0127] After confirming that the non-metallic material and hydrogen compatibility detection system 100 is filled with nitrogen, the fifth control valve 81 is controlled to close the seventh pipeline 8. Thus, nitrogen is blocked from flowing from the seventh pipeline 8 into the nitrogen non-metallic material and hydrogen compatibility detection system 100, ensuring the reliability of subsequent experiments.

[0128] In some embodiments of the present invention, the test chamber 3 is located in the test environment chamber, the inlet of the exhaust fan 15 is connected to the test environment chamber 14, and the detection method further includes:

[0129] Determine that the oxygen value in the test environment chamber is greater than the preset oxygen concentration value, or that the hydrogen value in the test environment chamber is greater than the preset hydrogen concentration value. It is understandable that when the non-metallic material part and the hydrogen compatibility detection system 100 test the non-metallic material part, hydrogen is transported to the test chamber 3 through the pipeline. Therefore, when the hydrogen-oxygen concentration detection device 141 detects that the oxygen value in the test environment chamber is greater than the preset oxygen concentration value, or that the hydrogen value in the test environment chamber is greater than the preset hydrogen concentration value, it indicates that the test chamber 3 is leaking or the test environment chamber is in contact with the external environment, thereby affecting the safety of the non-metallic material part and the hydrogen compatibility detection system 100 and the accuracy of the detection results.

[0130] Control the exhaust fan 15 to run. Thus, when the hydrogen-oxygen concentration detection device 141 detects that the oxygen value in the test environment chamber is greater than the preset oxygen concentration value, or the hydrogen value in the test environment chamber is greater than the preset hydrogen concentration value, the exhaust fan 15 is controlled to run to achieve emergency emptying, thereby ensuring the safety of the non-metallic material part and the hydrogen compatibility detection system 100.

[0131] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0132] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A non-metallic material and hydrogen compatibility detection system, characterized in that: include: A gas supply device (1), wherein the gas supply device (1) is used to provide hydrogen; A heat exchange device (2), one end of the heat exchange device (2) being in communication with the outlet of the air supply device (1); A test chamber (3), the other end of the heat exchange device (2) is connected to the test chamber (3), and the non-metallic material part is suitable for being placed in the test chamber (3).

2. The non-metallic material and hydrogen compatibility detection system according to claim 1, characterized in that: The heat exchange device (2) comprises: Precooling heat exchanger (21); Preheating heat exchanger (22); A first pipeline (23), the precooling heat exchanger (21) being serially connected to the first pipeline (23); a first control valve (24), the first control valve (24) being arranged on the first pipeline (23) and being used for controlling the on-off of the first pipeline (23); a second pipeline (25), the preheating heat exchanger (22) being connected in series to the second pipeline (25), the first pipeline (23) and the second pipeline (25) being arranged in parallel, one end of the first pipeline (23) and the second pipeline (25) being in communication with the outlet of the gas supply device (1), and the other end of the first pipeline (23) and the second pipeline (25) being in communication with the test chamber (3); A second control valve (26), wherein the second control valve (26) is arranged on the second pipeline (25) and is used to control the on-off of the second pipeline (25).

3. The non-metallic material and hydrogen compatibility detection system according to claim 1, characterized in that: Also includes: A third pipeline (5), one end of the third pipeline (5) is connected to the heat exchange device (2), and the other end is connected to the external environment. A third control valve (51) is provided on the third pipeline (5).

4. The non-metallic material and hydrogen compatibility detection system according to claim 1, characterized in that: Also includes: A gas replacement device (7), wherein the gas replacement device (7) is used to provide nitrogen, and an outlet of the gas replacement device (7) is connected to the heat exchange device (2).

5. The non-metallic material and hydrogen compatibility detection system according to claim 1, characterized in that: It also includes a hydrogen storage bottle (9), a pressurizing machine (10) and a high-pressure gas bottle (11) located between the gas supply device (1) and the heat exchange device (2), wherein the inlet of the hydrogen storage bottle (9) is connected to the outlet of the gas supply device (1), the inlet of the pressurizing machine (10) is connected to the outlet of the hydrogen storage bottle (9), the inlet of the high-pressure gas bottle (11) is connected to the outlet of the pressurizing machine (10), and the outlet of the high-pressure gas bottle (11) is connected to the heat exchange device (2).

6. The non-metallic material and hydrogen compatibility detection system according to claim 1, characterized in that: Also includes: A test environment chamber (14), wherein the test chamber (3) is located in the test environment chamber, and a hydrogen and oxygen concentration detection device (141) is provided on the inner wall surface of the test environment chamber (14).

7. The non-metallic material and hydrogen compatibility detection system according to claim 6, characterized in that: Also includes: An exhaust fan (15), wherein the inlet of the exhaust fan (15) is connected to the test environment chamber (14), and the exhaust fan (15) is communicatively connected to the hydrogen and oxygen concentration detection device (141).

8. A method for detecting compatibility between non-metallic material parts and hydrogen, characterized in that: The non-metallic material and hydrogen compatibility detection method adopts the non-metallic material and hydrogen compatibility detection system according to any one of claims 1 to 7, and the detection method comprises: Providing hydrogen gas into the test chamber (3) through the gas supply device (1); Obtaining the temperature and pressure of the hydrogen entering the test chamber (3); The temperature of the hydrogen entering the test chamber (3) is adjusted by the heat exchange device (2); Determining that the temperature of the hydrogen gas entering the test chamber (3) reaches a first preset temperature value and the pressure reaches a first preset pressure value; After determining that the temperature of the hydrogen reaches a first preset temperature value and the pressure reaches a first preset pressure value and runs for a first preset time, controlling the gas supply device (1) to stop supplying hydrogen to the test chamber (3) and exhausting the hydrogen in the test chamber (3); The non-metallic material piece located in the testing chamber (3) is taken out, and the non-metallic material piece is tested.

9. A method for detecting compatibility of non-metallic material parts with hydrogen according to claim 8, characterized in that: Before taking out the non-metallic material piece located in the testing chamber (3) and testing the non-metallic material piece, the testing method further comprises: Providing hydrogen gas again into the test chamber (3) through the gas supply device (1); Obtaining the temperature and pressure of the hydrogen entering the test chamber (3); The temperature of the hydrogen entering the test chamber (3) is adjusted by the heat exchange device (2); Determining that the temperature of the hydrogen gas entering the test chamber (3) reaches a second preset temperature value and the pressure reaches the first preset pressure value, and the second preset temperature value is less than the first preset temperature value; After determining that the temperature of the hydrogen reaches a second preset temperature value and the pressure reaches a first preset pressure value and runs for the first preset time, the gas supply device (1) is controlled to stop supplying hydrogen to the test chamber (3) and to exhaust the hydrogen in the test chamber (3).

10. A method for detecting compatibility of non-metallic material parts with hydrogen according to claim 8, characterized in that: The non-metallic material and hydrogen compatibility detection system further comprises a gas replacement device (7) for providing nitrogen, wherein an outlet of the gas replacement device (7) is in communication with the heat exchange device (2), and before the hydrogen is provided into the test chamber (3) through the gas supply device (1), the detection method further comprises: Providing nitrogen gas into the test chamber (3) through the gas replacement device (7); After determining that the non-metallic material part and hydrogen compatibility detection system is filled with nitrogen, the gas replacement device (7) is controlled to stop supplying nitrogen to the test chamber (3) and exhaust the nitrogen in the non-metallic material part and hydrogen compatibility detection system.

Images