Device and method for testing creep deformation of sealing gasket of offshore wind power hydrogen production electrolytic cell based on torque mechanical sensing

Abstract

The invention relates to the field of electrolytic bath sealing gasket creep test adaptable to an offshore wind power hydrogen production environment, in particular to an offshore wind power hydrogen production electrolytic bath sealing gasket creep test device based on torque mechanical sensing and a test method thereof, and the device comprises a test cabinet and a plurality of groups of test modules; the test module comprises a support frame and a support which are fixed in the test cabinet, an upper pressure plate is arranged on the support frame, a lower pressure plate concentric with the upper pressure plate is arranged on the support, and the upper pressure plate can be driven by a power mechanism arranged on the support frame to move towards the lower pressure plate to apply pressure to a to-be-tested sealing gasket placed on the lower pressure plate; by arranging the first nozzle and the second nozzle, hot air is blown towards the inner side and the outer side of the sealing gasket, it is ensured that heat is evenly transmitted to all parts of the sealing gasket, the temperature consistency of the different parts of the sealing gasket in the testing process is improved, temperature fluctuation caused by air flowing speed and direction changes can be avoided through the targeted heating mode, and the testing accuracy is improved. And the accuracy of a test result is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of creep testing of gaskets for electrolyzers adapted to offshore wind power hydrogen production environments, specifically a creep testing device and method for gaskets for offshore wind power hydrogen production electrolyzers based on torque mechanical sensing. Background Technology

[0002] In recent years, with the widespread promotion of clean energy, the combination of wind power and hydrogen production is an innovative and sustainable way of energy utilization. Producing clean fuel hydrogen through clean wind power generation has important strategic significance and broad application prospects.

[0003] Offshore wind power hydrogen production technology has lower resource costs because it can obtain a continuous supply of seawater resources and produce hydrogen without consuming freshwater resources. Offshore hydrogen production technologies include electrolysis, catalytic reaction, and photocatalytic oxidation. Catalytic reaction hydrogen production requires reactants and is difficult to scale up in the vast ocean; photocatalytic oxidation technology is currently mostly theoretical and is still far from practical industrial application; offshore electrolysis is the most suitable, and the electricity required for offshore electrolysis can be obtained from offshore wind power. Compared to supplying electricity to other locations offshore, directly supplying electricity using offshore wind power is more economical and easier to construct.

[0004] The electricity generated by offshore wind power can be used for hydrogen production and can also be directly connected to the grid. However, offshore wind power is intermittent and unstable, and large-scale grid connection presents challenges in power consumption. Hydrogen production from offshore wind power can convert excess wind power into hydrogen for storage, effectively solving the problem of power consumption.

[0005] In the process of offshore hydrogen electrolysis, the high humidity and high salinity of the marine environment lead to an increase in the moisture absorption rate and salt concentration of the sealing materials in the electrolysis equipment. As a crucial industrial piece of equipment for offshore wind power hydrogen production, the electrolyzer relies heavily on sealing gaskets. These gaskets are installed at various connection points within the electrolyzer, such as between electrode plates and between end plates. Their primary function is to prevent electrolyte leakage, ensure the internal sealing of the electrolyzer, and thus guarantee the normal operation of the electrolysis reaction. Simultaneously, they prevent the electrolyte from contacting the external environment, thus preventing corrosion and contamination.

[0006] Offshore wind power hydrogen production operates in a high-humidity, high-salinity environment. Water molecules and salt increase the mobility of epoxy resin molecules within the sealing gaskets. The evolution of water molecule clusters and voids within the epoxy resin accelerates creep failure of the sealing material, thus placing higher demands on the sealing of offshore electrolysis equipment. Furthermore, during hydrogen electrolysis, the Joule heating generated by the current flowing through the electrolyte, along with the heat released by the electrolysis reaction itself, leads to an increase in the internal temperature of the electrolyzer. This necessitates that the sealing gaskets maintain excellent sealing performance under high-temperature conditions.

[0007] Therefore, high-performance, creep-resistant electrolyzer seals are crucial for ensuring hydrogen production from offshore wind power, making high-standard creep testing of the gaskets essential. Creep testing involves applying constant stress to a material under specific temperature and pressure conditions and observing its deformation over a relatively long period. Through creep testing, the long-term stability and deformation characteristics of the gaskets in high-temperature environments can be evaluated, thereby predicting their service life and reliability in practical applications. Current testing methods typically involve placing the testing fixture in an oven to simulate a high-temperature environment for creep testing of the gaskets.

[0008] However, temperature gradients may exist inside the oven, meaning temperatures may differ at different locations. This leads to uneven temperature distribution across different parts of the gasket. Uneven heating of the gasket negatively impacts its creep test results. For example, areas with higher temperatures may creep prematurely, while areas with lower temperatures may creep later, resulting in inaccurate test data that fails to accurately reflect the gasket's performance under actual, uniform high-temperature conditions. This makes it difficult to achieve the desired low error in test results. While some ovens are equipped with good air circulation systems, changes in airflow speed and direction affect the gasket's heating, causing fluctuations in test results. These dynamic changes are difficult to fully control and predict, increasing the uncertainty of test results. For example, when the airflow speed is high, heat on the gasket surface may be quickly carried away, causing a local temperature drop; conversely, when the airflow direction changes, some areas may be suddenly exposed to high-temperature airflow, causing a sharp rise in local temperature. This dynamic thermal environment results in significant differences in the gasket's heating at different times, further exacerbating the uneven heating problem and leading to a series of testing issues. Summary of the Invention

[0009] The purpose of this invention is to provide a creep testing device and method for sealing gaskets of offshore wind power hydrogen production electrolyzers based on torque mechanical sensing, so as to solve the problem of high-standard testing of the creep resistance of electrolyzer sealing gaskets in the high humidity and high salinity environment of offshore wind power hydrogen production.

[0010] To achieve the above objectives, the present invention provides the following technical solution:

[0011] A creep testing device for sealing gaskets in offshore wind power hydrogen production electrolyzers based on torque mechanics sensing, comprising a test cabinet and multiple test modules housed within the test cabinet;

[0012] The test module includes:

[0013] The support frame and support are fixed inside the test cabinet. An upper pressure plate is movably mounted on the support frame, and a lower pressure plate concentric with the upper pressure plate is mounted on the support. The upper pressure plate can be driven by a power mechanism mounted on the support frame to move toward the lower pressure plate and apply pressure to the sealing gasket to be tested placed on the lower pressure plate.

[0014] Rotate the riser installed in the support. The riser is connected to a first nozzle and a second nozzle. The first nozzle is located in the through hole set in the center of the lower pressure plate. There are multiple second nozzles evenly distributed along the circumference of the lower pressure plate. When the upper pressure plate and the lower pressure plate are under pressure on the sealing gasket, a slit is formed between the upper pressure plate and the lower pressure plate. The first nozzle and the second nozzle can blow hot air into the slit to heat the sealing gasket.

[0015] The positioning mechanism is located inside the through hole and connected to the riser. The positioning mechanism can move radially along the lower pressure plate to perform an expansion positioning action on the sealing gasket.

[0016] As a further embodiment of the present invention: the power mechanism includes a lead screw rotatably mounted on the support frame and a threaded sleeve sleeved on the lead screw and threadedly connected to the lead screw, wherein the threaded sleeve is fixed to the upper pressure plate;

[0017] The support frame is also equipped with a first motor whose output end is connected to the lead screw. The support frame is also provided with a guide rail, and a guide seat is slidably provided on the guide rail. The guide seat is fixed to the threaded sleeve.

[0018] As a further aspect of the present invention: a torque sensor is provided between the first motor and the lead screw, and multiple laser displacement sensors are also installed on the upper pressure plate. The multiple laser displacement sensors are equidistantly distributed along the circumference of the upper pressure plate, and when the slit is formed between the upper pressure plate and the lower pressure plate, the laser displacement sensors correspond to the slit.

[0019] As a further embodiment of the present invention: a horizontal plate is provided inside the support, the vertical pipe is rotatably mounted on the horizontal plate, and a second motor is mounted on the horizontal plate, the output shaft of the second motor being connected to the vertical pipe via a belt;

[0020] The first nozzle is fixedly installed at the end of the riser away from the horizontal plate, and the second nozzle is connected to the riser through a transmission pipe.

[0021] As a further embodiment of the present invention: the transmission pipeline includes an inclined branch pipe that is fixedly connected to and communicates with the riser, the second nozzle is fixedly installed at the end of the inclined branch pipe away from the riser, and a guide tube is also provided in the support. The guide tube is sealed and rotatably connected to the end of the riser away from the first nozzle, and the guide tube is connected to the hot air delivery end.

[0022] As a further embodiment of the present invention: a first conical surface is formed on the inner wall of the through hole located at the center of the lower pressure plate, and a second conical surface is formed on the outer wall of the lower pressure plate. The first nozzle and the second nozzle can blow hot air toward the first conical surface and the second conical surface respectively, so that the hot air enters the slit.

[0023] As a further embodiment of the present invention: the positioning mechanism includes a plurality of limiting members movably disposed in the through hole, the plurality of limiting members being equidistantly distributed along the circumference, and an assembly frame is also provided on the riser, the assembly frame being arranged in a "+" shape, and the end away from the riser being slidably connected to a ring fixed in the through hole.

[0024] The limiting member is connected to the assembly frame through an elastic triggering structure. The support is also provided with a driving structure, which can move along the axial direction of the riser and drive the limiting member to move radially along the through hole.

[0025] As a further embodiment of the present invention: the assembly frame is provided with a guide groove, and the elastic triggering structure includes a slider that is slidably fitted in the guide groove and two uprights that are slidably disposed on the slider. The two uprights are fixed to the limiting member, and the outer periphery of the uprights is also fitted with springs at both ends that are respectively connected to the limiting member and the slider.

[0026] The upright has a rolling engagement component at the end away from the limiting member. The rolling engagement component includes a roller mounted on the upright and a limiting plate fixed to the bottom of the assembly frame and abutting against the roller. The limiting plate includes a first straight section, an inclined section, and a second straight section connected together. When the driving structure drives the slider to slide away from the upright, the roller rolls sequentially on the first straight section, the inclined section, and the second straight section, causing the limiting member to rise.

[0027] As a further embodiment of the present invention: the driving structure includes a kit slidably sleeved on the riser and a connecting rod connecting the kit and the slider. The two ends of the connecting rod are respectively hinged to the kit and the slider. The support is also movably provided with a connecting plate rotatably connected to the kit. The connecting plate can be driven to rise and fall by a threaded assembly provided in the support.

[0028] The kit has multiple strip-shaped grooves equidistantly spaced along its circumference, and the inclined branch pipe passes through the strip-shaped grooves and communicates with the riser.

[0029] A creep testing method for sealing gaskets in an offshore wind power hydrogen production electrolyzer, using the aforementioned testing device, includes the following steps:

[0030] Step 1: Place the gasket to be tested on the lower pressure plate;

[0031] Step 2: The positioning mechanism operates to position the gasket to be tested, making the gasket concentric with the upper and lower pressure plates.

[0032] Step 3: The power mechanism operates, driving the upper pressure plate to move downward, applying pressure to the sealing gasket located on the lower pressure plate, forming a slit between the upper and lower pressure plates;

[0033] Step four: The riser rotates, the first nozzle and the second nozzle rotate, and blow hot air into the slit, so that the hot air reaches the inside and outside of the sealing gasket and heats the sealing gasket.

[0034] Step 5: Organize the test data and evaluate the performance of the sealing gasket.

[0035] Compared with the prior art, the beneficial effects of the present invention are:

[0036] During the test, when temperature control is required, the riser rotates, causing the first and second nozzles to rotate and blow hot air to heat the sealing gasket, simulating the actual working conditions of the sealing gasket. Specifically, the first nozzle rotates in the through hole at the center of the lower pressure plate, and the second nozzle rotates around the circumference of the lower pressure plate. The first and second nozzles blow hot air toward the inner and outer sides of the sealing gasket, respectively.

[0037] Therefore, it can ensure that heat is evenly transferred to all parts of the sealing gasket. This design avoids the temperature gradient problem that may occur in traditional ovens, effectively improving the temperature consistency of different parts of the sealing gasket during testing. Moreover, compared with the air circulation system of traditional ovens, in this invention, the first and second nozzles directly blow hot air onto the sealing gasket, reducing the impact of airflow on the heating process. This targeted heating method can avoid temperature fluctuations caused by changes in airflow speed and direction, ensuring the stability of the heating process and providing a guarantee for the accuracy of test results.

[0038] In addition, before the test, multiple limiting components will perform an expansion action to position the gasket to be tested on the lower pressure plate, ensuring the concentricity of the upper pressure plate, the gasket to be tested, and the lower pressure plate. This avoids the situation where the position of the gasket to be tested is deviated from the upper and lower pressure plates, which would cause eccentric loading of the power mechanism. This ensures that the pressure on the gasket is uniform and stable during the test, which not only improves the accuracy of the test, but also improves the repeatability and consistency of the test. Attached Figure Description

[0039] Figure 1This is a schematic diagram of one embodiment of a creep testing device for sealing gaskets in an offshore wind power hydrogen electrolyzer based on torque mechanics sensing.

[0040] Figure 2 This is a schematic diagram of the internal structure of the test cabinet in one embodiment of a creep testing device for sealing gaskets in an offshore wind power hydrogen electrolyzer based on torque mechanics sensing.

[0041] Figure 3 This is a schematic diagram of the test module in one embodiment of a creep testing device for sealing gaskets in an offshore wind power hydrogen electrolyzer based on torque mechanics sensing.

[0042] Figure 4 This is a schematic diagram of the test module from another angle in one embodiment of the creep testing device for sealing gaskets in an offshore wind power hydrogen electrolyzer based on torque mechanics sensing.

[0043] Figure 5 This is a schematic diagram of the test module from another angle in one embodiment of the creep testing device for the sealing gasket of an offshore wind power hydrogen electrolyzer based on torque mechanics sensing.

[0044] Figure 6 This is an exploded view of the power mechanism in one embodiment of a creep testing device for sealing gaskets in an offshore wind power hydrogen electrolyzer based on torque mechanics sensing.

[0045] Figure 7 This is a schematic diagram of the internal structure of the support in one embodiment of a creep testing device for sealing gaskets in an offshore wind power hydrogen electrolyzer based on torque mechanics sensing.

[0046] Figure 8 for Figure 7 Enlarged view of the structure at point A in the middle.

[0047] Figure 9 This is a schematic diagram of the positioning mechanism in one embodiment of a creep testing device for sealing gaskets in an offshore wind power hydrogen electrolyzer based on torque mechanics sensing.

[0048] Figure 10 This is a schematic diagram of the positioning mechanism from another angle in one embodiment of a creep testing device for sealing gaskets in an offshore wind power hydrogen electrolyzer based on torque mechanics sensing.

[0049] Figure 11 for Figure 10 Enlarged view of the structure at point B.

[0050] Figure 12 This is an exploded view of the positioning mechanism in one embodiment of a creep testing device for sealing gaskets in an offshore wind power hydrogen electrolyzer based on torque mechanics sensing.

[0051] Figure 13This is a schematic diagram of hot air flow in a slit in one embodiment of a creep testing device for sealing gaskets in an offshore wind power hydrogen electrolyzer based on torque mechanics sensing.

[0052] In the diagram: 1. Test cabinet; 2. Support frame; 3. Support; 301. Fixing component; 4. Upper pressure plate; 5. Lower pressure plate; 501. First conical surface; 502. Second conical surface; 6. First motor; 7. Lead screw; 8. Threaded sleeve; 9. Guide rail; 10. Guide seat; 11. Torque sensor; 12. Laser displacement sensor; 13. Horizontal plate; 14. First nozzle; 15. Second nozzle; 16. Vertical pipe; 17. Inclined branch pipe; 18. Second motor; 19. Conduit; 20. Connecting plate; 21. Kit; 2101. Strip groove; 22. Connecting rod; 23. Ring body; 24. Assembly frame; 25. Slider; 26. Limiting component; 27. Vertical pole; 28. Spring; 29. ​​Roller; 30. Limiting plate; 3001. First straight section; 3002. Inclined section; 3003. Second straight section. Detailed Implementation

[0053] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0054] Furthermore, elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0055] Please see Figures 1-13 In this embodiment of the invention, a creep testing device for sealing gaskets of offshore wind power hydrogen production electrolyzers based on torque mechanical sensing includes a test cabinet 1 and multiple test modules disposed in the test cabinet 1.

[0056] The test module includes:

[0057] The support frame 2 and the support 3 are fixed inside the test cabinet 1. The upper pressure plate 4 is movably mounted on the support frame 2, and the lower pressure plate 5 is concentric with the upper pressure plate 4 on the support 3. The upper pressure plate 4 can be driven by the power mechanism mounted on the support frame 2 to move toward the lower pressure plate 5 and apply pressure to the sealing gasket to be tested placed on the lower pressure plate 5.

[0058] Rotate the riser 16 installed in the support 3. The riser 16 is connected to the first nozzle 14 and the second nozzle 15. The first nozzle 14 is located in the through hole set in the center of the lower pressure plate 5. Multiple second nozzles 15 are evenly distributed along the circumference of the lower pressure plate 5. When the upper pressure plate 4 and the lower pressure plate 5 are under pressure on the sealing gasket, a slit is formed between the upper pressure plate 4 and the lower pressure plate 5. The first nozzle 14 and the second nozzle 15 can blow hot air into the slit to heat the sealing gasket.

[0059] The positioning mechanism is located inside the through hole and connected to the riser 16. The positioning mechanism can move radially along the lower pressure plate 5 to perform an expansion positioning action on the sealing gasket.

[0060] It should be noted that the diameter of the through hole at the center of the lower pressure plate 5 is smaller than the inner diameter of the gasket to be tested. When testing the gasket, the gasket to be tested is placed on the lower pressure plate 5. Then, the positioning mechanism works and performs an expansion action, moving radially on the lower pressure plate 5 to straighten the gasket to be tested located on the lower pressure plate 5, so that the gasket to be tested is concentric with the upper pressure plate 4 and the lower pressure plate 5.

[0061] Therefore, when subsequent testing begins, the power mechanism drives the upper pressure plate 4 downwards, and the gasket under test is subjected to a certain pressure between the upper pressure plate 4 and the lower pressure plate 5. Due to the regularization process of the positioning mechanism, the concentricity of the upper pressure plate 4, the gasket under test, and the lower pressure plate 5 is ensured. This avoids the situation where the position of the gasket under test is deviated from the upper pressure plate 4 and the lower pressure plate 5, which would cause the power mechanism to be eccentrically loaded. This ensures that the pressure on the gasket is uniform and stable during the test, which not only improves the accuracy of the test, but also improves the repeatability and consistency of the test. The test standard is more representative, ensuring that the electrolyzer gasket that passes the test can be competent in the offshore wind power hydrogen production environment.

[0062] Furthermore, during the test, when temperature control is required, the riser 16 rotates, causing the first nozzle 14 and the second nozzle 15 to rotate as well. The first nozzle 14 and the second nozzle 15 blow hot air to heat the sealing gasket, simulating its actual operating conditions. Specifically, the first nozzle 14 rotates within the through-hole at the center of the lower pressure plate 5, and the second nozzle 15 rotates around the circumference of the lower pressure plate 5. The first nozzle 14 and the second nozzle 15 blow hot air towards the inner and outer sides of the sealing gasket, respectively. Therefore, it can be confirmed that... The heat is evenly transferred to all parts of the sealing gasket. This design avoids the temperature gradient problem that may occur in traditional ovens, effectively improving the temperature consistency of different parts of the sealing gasket during testing. Moreover, compared with the air circulation system of traditional ovens, in this invention, the first nozzle 14 and the second nozzle 15 directly blow hot air onto the sealing gasket, reducing the impact of airflow on the heating process. This targeted heating method can avoid temperature fluctuations caused by changes in airflow speed and direction, ensuring the stability of the heating process and providing a guarantee for the accuracy of test results.

[0063] Please refer to it again. Figures 3-6 The power mechanism includes a lead screw 7 rotatably mounted on the support frame 2 and a threaded sleeve 8 sleeved on the lead screw 7 and threadedly connected to the lead screw 7. The threaded sleeve 8 is fixed to the upper pressure plate 4. The support frame 2 is also equipped with a first motor 6 whose output end is connected to the lead screw 7. The support frame 2 is also provided with a guide rail 9. A guide seat 10 is slidably provided on the guide rail 9. The guide seat 10 is fixed to the threaded sleeve 8.

[0064] Furthermore, during testing, the first motor 6 drives the lead screw 7 to rotate. The guide rail 9 and the guide seat 10 can provide precise guidance for the movement of the threaded sleeve 8 and the upper pressure plate 4. Specifically, the threaded sleeve 8 is threadedly engaged with the lead screw 7. The threaded sleeve 8 drives the upper pressure plate 4 to move downward toward the lower pressure plate 5. Finally, the bottom surface of the upper pressure plate 4 acts on the upper surface of the sealing gasket located on the lower pressure plate 5, so that the sealing gasket is subjected to the pressure conditions that meet the creep test.

[0065] A torque sensor 11 is provided between the first motor 6 and the lead screw 7. A plurality of laser displacement sensors 12 are also installed on the upper pressure plate 4. The plurality of laser displacement sensors 12 are equidistantly distributed along the circumference of the upper pressure plate 4, and when the slit is formed between the upper pressure plate 4 and the lower pressure plate 5, the laser displacement sensor 12 corresponds to the slit.

[0066] It should be mentioned that the torque sensor 11 is installed between the lead screw 7 and the first motor 6 and connected by a coupling to measure the torque transmitted by the lead screw 7 during loading. By monitoring the change of force, it can be ensured that the applied stress meets the test requirements and remains stable during the test. Secondly, the laser displacement sensor 12 is used to monitor the deformation of the sealing gasket located between the upper pressure plate 4 and the lower pressure plate 5 during the creep test to provide displacement or strain data of the sealing gasket during the creep process, which helps to assess its deformation degree.

[0067] Furthermore, this application does not impose specific limitations on the specific models of the torque sensor 11 and the laser displacement sensor 12; they can be selected according to the actual situation to meet the testing requirements.

[0068] Please refer to it again. Figure 9 and Figure 10 The support 3 contains a horizontal plate 13, on which the riser 16 is rotatably mounted. A second motor 18 is mounted on the horizontal plate 13, and the output shaft of the second motor 18 is connected to the riser 16 via a belt. The first nozzle 14 is fixedly mounted on the end of the riser 16 away from the horizontal plate 13, and the second nozzle 15 is connected to the riser 16 via a transmission pipeline. The transmission pipeline includes an inclined branch pipe 17 fixedly connected to and communicating with the riser 16. The second nozzle 15 is fixedly mounted on the end of the inclined branch pipe 17 away from the riser 16. The support 3 also contains a conduit 19, which is rotatably and sealed to the end of the riser 16 away from the first nozzle 14. The conduit 19 is connected to a hot air delivery end.

[0069] Furthermore, the heat-sealing conveying end includes an air pump and a heater. After the air pump draws in air, the heater heats the air, and then the air is conveyed to the riser 16 and the inclined branch pipe 17 through the conduit 19. Thus, the hot air is pumped out through the first nozzle 14 and the second nozzle 15 and blown towards the inner and outer sides of the sealing gasket to uniformly heat the sealing gasket.

[0070] Please refer to it again. Figure 13 A first conical surface 501 is formed on the inner wall of the through hole located at the center of the lower pressure plate 5, and a second conical surface 502 is also formed on the outer wall of the lower pressure plate 5. The first nozzle 14 and the second nozzle 15 can blow hot air toward the first conical surface 501 and the second conical surface 502 respectively, so that the hot air enters the slit.

[0071] It should be noted that the first conical surface 501 is provided to ensure that the first nozzle 14 is below the upper surface of the lower pressure plate 5. At the same time, the first conical surface 501 can guide the hot air and ensure that the hot air blown out by the first nozzle 14 can be blown towards the inside of the sealing gasket.

[0072] Secondly, the second conical surface 502 can prevent the second nozzle 15 from interfering with the laser displacement sensor 12 during its circumferential movement along the lower pressure plate 5, and guide the hot air blown out by the second nozzle 15 so that the hot air blown out by the second nozzle 15 can be blown to the outside of the sealing gasket, thereby achieving all-round heating treatment of the sealing gasket.

[0073] It should be noted that the lower pressure plate 5 is fixed to the support 3 by multiple fasteners 301, and one end of the fastener 301 is fixed to the second conical surface 502. The height of the second nozzle 15 is lower than the fastener 301. In addition, in order to avoid interference between the fastener 301 and the laser displacement sensor 12, the multiple fasteners 301 and the multiple laser displacement sensors 12 are staggered.

[0074] Please refer to it again. Figure 8 and Figure 9 The positioning mechanism includes a plurality of limiting members 26 movably disposed within the through hole. The plurality of limiting members 26 are equidistantly distributed along the circumference. An assembly frame 24 is also provided on the riser 16. The assembly frame 24 is arranged in a "+" shape, and one end away from the riser 16 is slidably connected to a ring 23 fixed within the through hole. The limiting members 26 are connected to the assembly frame 24 through an elastic triggering structure. A driving structure is also provided in the support 3. The driving structure can move along the axial direction of the riser 16 and drive the limiting members 26 to move radially along the through hole.

[0075] Specifically, the ring body 23 is concentric with the lower pressure plate 5, and the inner wall of the ring body 23 is provided with a sliding groove. The end of the assembly frame 24 is slidably engaged with the sliding groove. The ring body 23 can stabilize the rotation of the riser 16.

[0076] Please refer to it again. Figure 11The assembly frame 24 is provided with a guide groove. The elastic triggering structure includes a slider 25 that is slidably fitted in the guide groove and two uprights 27 that are slidably disposed on the slider 25. The two uprights 27 are fixed to the limiting member 26. The outer periphery of the uprights 27 is also fitted with springs 28 that are respectively connected to the limiting member 26 and the slider 25 at both ends. The end of the upright 27 away from the limiting member 26 is provided with a rolling engagement member. The rolling engagement member includes a roller 29 installed on the upright 27 and a limiting plate 30 fixed to the bottom of the assembly frame 24 and abutting against the roller 29. The limiting plate 30 includes a first straight section 3001, an inclined section 3002 and a second straight section 3003 connected together. When the driving structure drives the slider 25 to slide away from the riser 16, the roller 29 rolls sequentially on the first straight section 3001, the inclined section 3002 and the second straight section 3003, and causes the limiting member 26 to rise.

[0077] Furthermore, the ends of the two uprights 27 away from the limiting member 26 are fixedly connected to a mounting base (not labeled in the figure), and the roller 29 is installed on the side of the mounting base.

[0078] Please refer to it again. Figure 12 The driving structure includes a kit 21 slidably sleeved on the riser 16 and a connecting rod 22 connecting the kit 21 and the slider 25. The two ends of the connecting rod 22 are respectively hinged to the kit 21 and the slider 25. The support 3 is also movably provided with a connecting plate 20 rotatably connected to the kit 21. The connecting plate 20 can be driven to rise and fall by a threaded assembly provided in the support 3. The kit 21 is provided with a plurality of strip-shaped through slots 2101 equidistantly along the circumference. The inclined branch pipe 17 passes through the strip-shaped through slots 2101 and communicates with the riser 16.

[0079] Specifically, the threaded assembly includes a threaded rod rotatably mounted on the horizontal plate 13 and a threaded sleeve disposed on the threaded rod and threadedly connected to the threaded rod. The threaded sleeve is fixed to the connecting plate 20, and the threaded rod is also equipped with a servo motor. The servo motor drives the threaded rod to rotate, so that the threaded sleeve and the threaded rod engage in threaded engagement, thereby driving the connecting plate 20 to rise and fall.

[0080] During testing, after the gasket to be tested is placed on the lower pressure plate 5, the connecting plate 20 is driven to rise. The connecting plate 20 then drives the assembly 21 to slide upwards along the axial direction of the riser 16. Correspondingly, the assembly 21, through the connecting rod 22, pushes the slider 25 to slide radially away from the center of the lower pressure plate 5 along the through hole. During this process, the roller 29 first separates from the first straight section 3001. While rolling along the inclined section 3002, the spring 28 rebounds, the riser 27 slides upwards relative to the slider 25, and the limiting member 26 is lifted. When the roller 29 rolls onto the second straight section 3003, the limiting member 26 has reached the upper surface of the lower pressure plate 5. Therefore, as the slider 25 continues to slide, the expansion action of multiple limiting members 26 can limit the sealing gasket to be tested on the lower pressure plate 5, ensuring that the sealing gasket is concentric with the upper pressure plate 4 and the lower pressure plate 5, thereby avoiding the problem of eccentric loading when the upper pressure plate 4 descends. Therefore, through the expansion action of multiple limiting members 26, the sealing gasket can be effectively positioned before testing, providing a guarantee for the smooth progress of the test. After the sealing gasket is positioned, the connecting plate 20 moves down, and each component resets, that is, the multiple limiting members 26 perform a retraction action, and are finally stored in the through hole, with the height being the upper surface of the lower pressure plate 5.

[0081] It should be noted that the connecting plate 20 is located below the inclined branch pipe 17. Since multiple inclined branch pipes 17 will make circular motion during the test, the setting of the strip through groove 2101 can avoid the problem of interference caused by the inclined branch pipe 17 while achieving smooth driving of multiple sliders 25.

[0082] As another embodiment of the present invention, a creep test method for sealing gaskets of offshore wind power hydrogen electrolyzers is also proposed, which uses the aforementioned test device and includes the following steps:

[0083] Step 1: Place the gasket to be tested on the lower pressure plate 5;

[0084] Step 2: The positioning mechanism operates to position the gasket to be tested, making the gasket concentric with the upper pressure plate 4 and the lower pressure plate 5.

[0085] Step 3: The power mechanism operates, driving the upper pressure plate 4 to move downward, applying pressure to the sealing gasket located on the lower pressure plate 5, forming a slit between the upper pressure plate 4 and the lower pressure plate 5.

[0086] Step 4: The riser 16 rotates, the first nozzle 14 and the second nozzle 15 rotate, and blow hot air into the slit, so that the hot air reaches the inside and outside of the sealing gasket and heats the sealing gasket.

[0087] Step 5: Organize the test data and evaluate the performance of the sealing gasket.

[0088] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0089] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A creep testing device for sealing gaskets of offshore wind power hydrogen production electrolyzers based on torque mechanical sensing, comprising a test cabinet and multiple test modules disposed within the test cabinet; Its features are, The test module includes: The support frame and support are fixed inside the test cabinet. An upper pressure plate is movably mounted on the support frame, and a lower pressure plate concentric with the upper pressure plate is mounted on the support. The upper pressure plate can be driven by a power mechanism mounted on the support frame to move toward the lower pressure plate and apply pressure to the sealing gasket to be tested placed on the lower pressure plate. Rotate the riser installed in the support. The riser is connected to a first nozzle and a second nozzle. The first nozzle is located in the through hole set in the center of the lower pressure plate. There are multiple second nozzles evenly distributed along the circumference of the lower pressure plate. When the upper pressure plate and the lower pressure plate are under pressure on the sealing gasket, a slit is formed between the upper pressure plate and the lower pressure plate. The first nozzle and the second nozzle can blow hot air into the slit to heat the sealing gasket. The positioning mechanism is located inside the through hole and connected to the riser. The positioning mechanism can move radially along the lower pressure plate to perform an expansion positioning action on the sealing gasket.

2. The creep testing device for sealing gaskets of offshore wind power hydrogen electrolyzers based on torque mechanical sensing according to claim 1, characterized in that, The power mechanism includes a lead screw rotatably mounted on the support frame and a threaded sleeve sleeved on the lead screw and threadedly connected to the lead screw, wherein the threaded sleeve is fixed to the upper pressure plate; The support frame is also equipped with a first motor whose output end is connected to the lead screw. The support frame is also provided with a guide rail, and a guide seat is slidably provided on the guide rail. The guide seat is fixed to the threaded sleeve.

3. The creep testing device for sealing gaskets of offshore wind power hydrogen electrolyzers based on torque mechanical sensing according to claim 2, characterized in that, A torque sensor is provided between the first motor and the lead screw. Multiple laser displacement sensors are also installed on the upper pressure plate. The multiple laser displacement sensors are equidistantly distributed along the circumference of the upper pressure plate. When the slit is formed between the upper pressure plate and the lower pressure plate, the laser displacement sensor corresponds to the slit.

4. The creep testing device for sealing gaskets of offshore wind power hydrogen production electrolyzers based on torque mechanical sensing according to claim 1, characterized in that, A horizontal plate is provided inside the support, the vertical pipe is rotatably mounted on the horizontal plate, and a second motor is mounted on the horizontal plate. The output shaft of the second motor is connected to the vertical pipe via a belt. The first nozzle is fixedly installed at the end of the riser away from the horizontal plate, and the second nozzle is connected to the riser through a transmission pipe.

5. The creep testing device for sealing gaskets of offshore wind power hydrogen production electrolyzers based on torque mechanical sensing according to claim 4, characterized in that, The transmission pipeline includes an inclined branch pipe that is fixedly connected to and communicates with the riser. The second nozzle is fixedly installed at the end of the inclined branch pipe away from the riser. A conduit is also provided in the support. The conduit is sealed and rotatably connected to the end of the riser away from the first nozzle. The conduit is connected to the hot air delivery end.

6. The creep testing device for sealing gaskets of offshore wind power hydrogen electrolyzers based on torque mechanical sensing according to claim 5, characterized in that, A first conical surface is formed on the inner wall of the through hole located at the center of the lower pressure plate, and a second conical surface is also formed on the outer wall of the lower pressure plate. The first nozzle and the second nozzle can blow hot air toward the first conical surface and the second conical surface respectively, so that the hot air enters the slit.

7. The creep testing device for sealing gaskets of offshore wind power hydrogen electrolyzers based on torque mechanical sensing according to claim 5, characterized in that, The positioning mechanism includes multiple limiting members movably disposed in the through hole, the multiple limiting members being equidistantly distributed along the circumference, and an assembly frame being provided on the riser. The assembly frame is arranged in a "+" shape, and one end away from the riser is slidably connected to a ring fixed in the through hole. The limiting member is connected to the assembly frame through an elastic triggering structure. The support is also provided with a driving structure, which can move along the axial direction of the riser and drive the limiting member to move radially along the through hole.

8. The creep testing device for sealing gaskets of offshore wind power hydrogen electrolyzers based on torque mechanical sensing according to claim 7, characterized in that, The assembly frame is provided with a guide groove, and the elastic triggering structure includes a slider that is slidably fitted in the guide groove and two uprights that are slidably disposed on the slider. The two uprights are fixed to the limiting member, and the outer periphery of the uprights is also fitted with springs at both ends that are respectively connected to the limiting member and the slider. The upright has a rolling engagement component at the end away from the limiting member. The rolling engagement component includes a roller mounted on the upright and a limiting plate fixed to the bottom of the assembly frame and abutting against the roller. The limiting plate includes a first straight section, an inclined section, and a second straight section connected together. When the driving structure drives the slider to slide away from the upright, the roller rolls sequentially on the first straight section, the inclined section, and the second straight section, causing the limiting member to rise.

9. A creep testing device for sealing gaskets in offshore wind power hydrogen electrolyzers based on torque mechanical sensing, as described in claim 8, is characterized in that... The drive structure includes a kit that is slidably sleeved on the riser and a connecting rod that connects the kit and the slider. The two ends of the connecting rod are respectively hinged to the kit and the slider. The support is also movably provided with a connecting plate that is rotatably connected to the kit. The connecting plate can be driven to rise and fall by a threaded assembly provided in the support. The kit has multiple strip-shaped grooves equidistantly spaced along its circumference, and the inclined branch pipe passes through the strip-shaped grooves and communicates with the riser.

10. A method for testing the creep of a sealing gasket in an offshore wind power hydrogen electrolyzer, using the testing apparatus as described in claim 1, characterized in that... Includes the following steps: Step 1: Place the gasket to be tested on the lower pressure plate; Step 2: The positioning mechanism operates to position the gasket to be tested, making the gasket concentric with the upper and lower pressure plates. Step 3: The power mechanism operates, driving the upper pressure plate to move downward, applying pressure to the sealing gasket located on the lower pressure plate, forming a slit between the upper and lower pressure plates; Step four: The riser rotates, the first nozzle and the second nozzle rotate, and blow hot air into the slit, so that the hot air reaches the inside and outside of the sealing gasket and heats the sealing gasket. Step 5: Organize the test data and evaluate the performance of the sealing gasket.

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