Device and method for testing mechanical stability of solid hydrogen storage material

Abstract

The invention discloses a solid hydrogen storage material mechanical stability testing device and method, and relates to the technical field of testing devices.The solid hydrogen storage material mechanical stability testing device comprises a tank body, a round opening is formed in the wall body of the tank body, an air pipe is fixedly connected to the interior of the round opening and communicates with the tank body, and a supporting plate is fixedly connected to the inner wall of the air pipe; the supporting plate is located at the end, close to the tank body, of the air pipe, a cylinder is fixedly connected to the supporting plate, the cylinder and the air pipe are coaxially arranged, a round rod is slidably connected to the cylinder, a limiting block is fixedly arranged on the round rod, a filter plate is rotatably connected to the end, close to the tank body, of the round rod, and an air hopper is fixedly connected to the filter plate. And the air hopper surrounds the outer side of the filter plate. According to the mechanical stability testing device for the solid hydrogen storage material, by arranging the filter plate, the gas hopper, the guide assembly and other structures, impurity particles can be filtered, and meanwhile the effects of guiding gas flow and protecting the filter plate are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of testing devices, and in particular to a device and method for testing the mechanical stability of solid hydrogen storage materials. Background Art

[0002] Hydrogen energy is a clean and pollution-free new energy, but hydrogen has a low volume density and low liquefaction temperature under normal conditions, making it difficult to store and transport. These factors limit the promotion and application of hydrogen energy. Magnesium-based hydrogen storage materials are a solid hydrogen storage material with great development prospects. They have high hydrogen storage capacity, wide sources, are non-toxic and harmless, low cost, and good safety. They are suitable for large-scale storage and transportation of hydrogen. The principle of magnesium alloy hydrogen storage is that under certain temperature and hydrogen pressure conditions, magnesium alloy materials can undergo reversible hydrogen absorption and dehydrogenation reactions with hydrogen, thereby realizing the storage and release of hydrogen. Hydrogen storage materials need to be tested for mechanical stability before they are put into use.

[0003] In the mechanical stability test of hydrogen storage materials, multiple inflation and exhaust operations are required. After multiple adsorptions, the hydrogen storage materials will become powdered, thereby generating a large number of impurity particles. During the exhaust operation, the impurity particles can easily enter the gas pipeline with the gas, damaging valves and fittings, affecting the air tightness and accuracy of the test instruments, and even posing a safety hazard.

[0004] Therefore, it is necessary to propose a solid-state hydrogen storage material mechanical stability testing device and method to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a device and method for testing the mechanical stability of solid hydrogen storage materials, so as to solve the problem that impurity particles can easily enter the gas pipeline along with the gas during exhaust operation, damage valve fittings, affect the airtightness and accuracy of the test instrument, and even cause safety hazards.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for testing the mechanical stability of solid hydrogen storage materials, comprising a tank body, a circular opening is provided on the wall of the tank body, an air pipe is fixedly connected to the inside of the circular opening, the air pipe is connected to the tank body, a support plate is fixedly connected to the inner wall of the air pipe, the support plate is located at one end of the air pipe close to the tank body, a cylinder is fixedly connected to the support plate, the cylinder and the air pipe are coaxially arranged, a round rod is slidably connected to the cylinder, a limiting block is fixedly arranged on the round rod, a filter plate is rotatably connected to the end of the round rod close to the tank body, a gas hopper is fixedly connected to the filter plate, the gas hopper surrounds the outside of the filter plate, a circular groove is provided on the end of the air pipe close to the tank body, a sliding rod is slidably connected to the inside of the circular groove, the sliding rod is fixedly connected to the gas hopper, and a guide assembly is provided at one end of the round rod away from the filter plate.

[0007] Preferably, the guide assembly comprises an inner ring, a rubber sleeve and an outer ring, the inner ring is rotatably connected to the round rod, the rubber sleeve is fixedly connected to the outer ring of the inner ring, and the outer ring is fixedly connected to the outer ring of the rubber sleeve.

[0008] Preferably, the guide assembly also includes a slide groove and a slide plate, and the slide groove and the slide plate are each provided with two, the slide groove is opened on the inner wall of the trachea, the two slide grooves are symmetrically distributed about the axis of the trachea, one end of the slide plate is fixedly connected to the outer ring, and the other end of the slide plate is slidably connected in the corresponding slide groove.

[0009] Preferably, a cleaning cylinder is fixedly connected to the round rod, the cleaning cylinder is located on the side of the filter plate facing away from the cylinder, the cleaning cylinder is slidably fitted on the filter plate, and an inlet is opened on the side wall of the cleaning cylinder.

[0010] Preferably, a cleaning strip is fixedly connected to the outer wall of the cleaning cylinder, the cleaning strip is located on the side of the cleaning cylinder close to the inlet, the cleaning strip is slidably fitted on the filter plate, and the cleaning strip is in the shape of a triangular prism.

[0011] Preferably, a circular ring is fixedly connected to the round rod, the circular ring is located between the cylinder and the inner ring, and fan blades are fixedly connected to the outer ring of the circular ring. The fan blades are provided in plurality and the plurality of fan blades are evenly distributed around the circular ring.

[0012] Preferably, a closing assembly cooperating with the inlet is provided inside the cleaning cylinder, and the closing assembly includes a pressure strip and a spring, the pressure strip is sealed with the inlet, one end of the spring is fixedly connected to the pressure strip, and the other end of the spring is fixedly connected to the inner wall of the cleaning cylinder.

[0013] Preferably, a plurality of circular holes are provided on the side wall of the cleaning cylinder.

[0014] Preferably, a square opening is provided on the tank body, and the interior of the square opening is sealed with a sealing plate.

[0015] The present invention also discloses a method for testing the mechanical stability of a solid hydrogen storage material, comprising the above-mentioned device for testing the mechanical stability of a solid hydrogen storage material, and further comprising the following steps:

[0016] S1. Discharging: Open the sealing plate and put the material into the tank through the square opening;

[0017] S2. Inflation: The gas is transported from the air pipe to the inside of the tank. The gas pushes the round rod to slide toward the inside of the tank through the inner ring, rubber sleeve and outer ring. The gas is transported into the tank through the gap between the gas bucket and the air pipe.

[0018] S3. Vacuuming: The gas inside the tank is sucked by the air pipe. The gas drives the round rod to reset through the inner ring, rubber sleeve and outer ring. The filter plate filters the impurity particles. Affected by the airflow, the fan blade drives the cleaning cylinder to rotate on the filter plate through the round rod, and the impurity particles enter the interior of the cleaning cylinder from the inlet.

[0019] Technical effects and advantages of the present invention:

[0020] 1. The present invention can filter out foreign particles by setting structures such as filter plates, air hoppers and guide components, and at the same time play the role of air flow guidance and protection of the filter plates;

[0021] 2. When performing exhaust operation, the cleaning strip is pressed against the filter plate and scraped, and the impurity particles enter the interior of the cleaning cylinder from the inlet, achieving the effect of automatic cleaning;

[0022] 3. Structures such as pressure strips and springs are provided to prevent the impurity particles inside the cleaning cylinder from being scattered randomly. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic structural diagram of the mechanical stability testing device of the solid-state hydrogen storage material of the present invention.

[0024] Figure 2 It is a schematic cross-sectional structure diagram of the mechanical stability testing device for solid-state hydrogen storage materials of the present invention.

[0025] Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure in the middle.

[0026] Figure 4 It is a schematic diagram of the tank body and air pipe structure of the present invention.

[0027] Figure 5 For the present invention Figure 4 Enlarged schematic diagram of the structure at point B in the middle.

[0028] Figure 6 It is a schematic diagram of the filter plate and gas hopper structure of the present invention.

[0029] Figure 7 It is a schematic diagram of the structure of the cleaning cylinder, cleaning strip and sealing plate of the present invention.

[0030] In the figure: 1. tank body; 2. air pipe; 3. support plate; 4. cylinder; 5. round rod; 6. filter plate; 7. air bucket; 8. round groove; 9. slide rod; 10. inner ring; 11. rubber sleeve; 12. outer ring; 13. slide groove; 14. slide plate; 15. cleaning cylinder; 16. cleaning strip; 17. inlet; 18. pressure strip; 19. spring; 20. round ring; 21. fan blade; 22. square mouth; 23. sealing plate; 24. round hole; 25. limit block. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clarify the technical solutions in the embodiments of the present invention; it is clearly described in detail. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] The present invention provides Figure 1 to Figure 7 A solid-state hydrogen storage material mechanical stability test device is shown, comprising a tank body 1, a square opening 22 is provided on the tank body 1, and the interior of the square opening 22 is sealed with a sealing plate 23. When in use, the sealing plate 23 is opened, and the material is placed into the interior of the tank body 1 through the square opening 22. A circular opening is provided on the wall of the tank body 1, and an air pipe 2 is fixedly connected to the interior of the circular opening, and the air pipe 2 is connected to the tank body 1. The air pipe 2 is connected to the gas supply device, which is used to inflate and exhaust the tank body 1 through the air pipe 2, so as to test the mechanical stability of the solid-state hydrogen storage material; and when in use, a temperature control device is provided on the tank body 1, including a heating plate and other structures, so as to test the stability of the hydrogen storage material under different temperature and pressure conditions. Both the gas supply device and the temperature control device are existing common technologies and will not be described in detail here.

[0033] Considering that after multiple operations such as inflation and exhaust, the hydrogen storage material will produce a large number of impurity particles. In order to prevent the impurity particles from entering the gas pipeline of the gas supply device and causing damage to valves and fittings, a support plate 3 is fixedly connected to the inner wall of the gas pipe 2. The support plate 3 is located at one end of the gas pipe 2 close to the tank body 1. A cylinder 4 is fixedly connected to the support plate 3. The cylinder 4 is coaxially arranged with the gas pipe 2. A round rod 5 is slidably connected to the cylinder 4. A filter plate 6 is rotatably connected to the end of the round rod 5 close to the tank body 1. A gas hopper 7 is fixedly connected to the filter plate 6. The gas hopper 7 surrounds the outer side of the filter plate 6. When the exhaust operation is performed, the filter plate 6 cooperates with the gas hopper 7 and fits on the end of the gas pipe 2, and the filter plate 6 can filter the impurity particles; when the inflation operation is performed, the round rod 5 and the filter plate 6 move synchronously toward the tank body 1, so that a gap appears between the gas hopper 7 and the end of the gas pipe 2, and the gas can enter the interior of the tank body 1 through the gap.

[0034] The round rod 5 is fixed with a limit block 25 (refer to Figure 5 As shown), the limit block 25 is located on the side of the cylinder 4 facing away from the filter plate 6, limiting the sliding distance of the round rod 5.

[0035] In order to prevent the air hopper 7 and the filter plate 6 from rotating at will, a circular groove 8 is provided at one end of the air pipe 2 close to the tank body 1 , and a slide rod 9 is slidably connected inside the circular groove 8 , and the slide rod 9 is fixedly connected to the air hopper 7 .

[0036] In order to realize the movement of the air scoop 7 and the filter plate 6, a guide assembly is provided at one end of the round rod 5 away from the filter plate 6, and the guide assembly includes an inner ring 10, a rubber sleeve 11 and an outer ring 12. The inner ring 10 is rotatably connected to the round rod 5, the rubber sleeve 11 is fixedly connected to the outer ring of the inner ring 10, and the outer ring 12 is fixedly connected to the outer ring of the rubber sleeve 11. The rubber sleeve 11 has a certain elasticity.

[0037] When the exhaust operation is performed, under the action of the airflow, the rubber sleeve 11 and the outer ring 12 will drive the round rod 5 and the filter plate 6 to move synchronously in the direction away from the tank body 1; at the same time, the rubber sleeve 11 and the outer ring 12 will be folded in the direction away from the tank body 1 (refer to Figure 5 ), and the filter plate 6 and the air hopper 7 are attached to the end of the air pipe 2 through the round rod 5, and the filter plate 6 can filter the impurity particles;

[0038] When the air intake operation is performed, under the action of the airflow, the rubber sleeve 11 and the outer ring 12 will drive the round rod 5 and the filter plate 6 to move synchronously toward the tank body 1, and the round rod 5 and the filter plate 6 will move synchronously toward the tank body 1, so that a gap appears between the air bucket 7 and the end of the air pipe 2, and the limit block 25 limits the moving position; at the same time, the rubber sleeve 11 and the outer ring 12 will be folded toward the tank body 1, forming a structure with a gradually increasing outer diameter along the direction of the airflow, and the airflow will blow along its outer wall, and fit the inner wall of the air pipe 2 to flow into the tank body 1 through the gap between the air bucket 7 and the end of the air pipe 2, thereby reducing the reverse blowing force on the filter plate 6, extending the service life, ensuring the filtering effect, and at the same time playing the role of airflow guidance and protection of the filter plate 6.

[0039] The present invention can filter foreign particles by arranging structures such as the filter plate 6, the air hopper 7 and the guide assembly, and at the same time play the role of air flow guidance and protection of the filter plate 6.

[0040] In order to ensure the stability of the folding of the rubber sleeve 11 and the outer ring 12, the guide assembly further includes a slide groove 13 and a slide plate 14, and two slide grooves 13 and slide plates 14 are provided. The slide groove 13 is provided on the inner wall of the trachea 2, and the two slide grooves 13 are symmetrically distributed about the axis of the trachea 2. One end of the slide plate 14 is fixedly connected to the outer ring 12, and the other end of the slide plate 14 is slidably connected to the corresponding slide groove 13. The slide groove 13 and the slide plate 14 are provided to guide the rubber sleeve 11 and the outer ring 12.

[0041] Considering the cleaning of the impurity particles on the filter plate 6, a cleaning cylinder 15 is fixedly connected to the round rod 5. The cleaning cylinder 15 is located on the side of the filter plate 6 facing away from the cylinder 4. The cleaning cylinder 15 slides on the filter plate 6. An inlet 17 is provided on the side wall of the cleaning cylinder 15. A cleaning bar 16 is fixedly connected to the outer wall of the cleaning cylinder 15. The cleaning bar 16 is located on the side of the cleaning cylinder 15 close to the inlet 17. The cleaning bar 16 slides on the filter plate 6. The cleaning bar 16 is in the shape of a triangular prism. The round rod 5 drives the cleaning cylinder 15 to rotate, and the cleaning bar 16 pushes and scrapes against the filter plate 6, and the impurity particles enter the interior of the cleaning cylinder 15 through the inlet 17.

[0042] A circular ring 20 is fixedly connected to the round rod 5, and the circular ring 20 is located between the cylinder 4 and the inner ring 10. A fan blade 21 is fixedly connected to the outer ring of the circular ring 20. The fan blade 21 is provided in multiple numbers, and the multiple fan blades 21 are evenly distributed around the circular ring 20, and the fan blade 21 is close to the inner ring 10, the rubber sleeve 11, the outer ring 12 and other structures. Under the action of the airflow, the fan blade 21 rotates, and then drives the cleaning cylinder 15 to rotate through the circular rod 5, and the inlet 17 and the cleaning strip 16 are both located at the front end of the cleaning cylinder 15 in the rotation direction.

[0043] When the exhaust operation is performed, the fan blades 21 rotate under the action of the airflow, and then drive the cleaning barrel 15 to rotate through the round rod 5, and the cleaning strips 16 are pressed against the filter plate 6 to push and scrape, and the impurity particles enter the interior of the cleaning barrel 15 from the inlet 17, achieving the effect of automatic cleaning. At the same time, the impurities on the filter plate 6 are cleaned in time to ensure the efficiency of exhaust.

[0044] At the same time, considering that during the air intake operation, the airflow will also drive the fan blades 21 to rotate, and it is easy to cause the cleaning barrel 15 to rotate in the opposite direction, but it is impossible to collect impurities and it is easy to scrape off the impurities. The inner ring 10, rubber sleeve 11 and outer ring 12 and other structures are set to block the fan blades 21 during the air intake operation, so the fan blades 21 and the cleaning barrel 15 will not rotate.

[0045] In order to prevent the impurity particles collected in the cleaning cylinder 15 from being scattered randomly, a sealing component that cooperates with the inlet 17 is provided inside the cleaning cylinder 15, and the sealing component includes a pressure strip 18 and a spring 19. When in use, a plurality of springs 19 are provided. The pressure strip 18 is sealed with the inlet 17, one end of the spring 19 is fixedly connected to the pressure strip 18, and the other end of the spring 19 is fixedly connected to the inner wall of the cleaning cylinder 15.

[0046] Specifically, when the cleaning barrel 15 rotates, since the inlet 17 is at the front end of the rotation direction of the cleaning barrel 15, affected by wind resistance, the pressure strip 18 will move toward the inside of the cleaning barrel 15, so that the inlet 17 is opened, making it easier for impurities to enter the interior. After the cleaning is completed, the restoring force of the spring 19 resets the pressure strip 18 and closes the inlet 17 to prevent impurity particles from scattering at will.

[0047] The foreign particles inside the cleaning cylinder 15 can be cleaned regularly by staff.

[0048] In order to reduce the resistance of the cleaning cylinder 15 during the cleaning process, a plurality of circular holes 24 are opened on the side wall of the cleaning cylinder 15, and the inner diameter of the circular holes 24 is small so that foreign particles cannot pass through.

[0049] The present invention also includes a method for testing the mechanical stability of a solid hydrogen storage material, including the above-mentioned solid hydrogen storage material mechanical stability testing device, and further including the following steps:

[0050] S1, material discharge: open the sealing plate 23, and put the material into the tank body 1 through the square opening 22;

[0051] S2, inflation: gas is transported from the air pipe 2 to the inside of the tank body 1, and the gas pushes the round rod 5 to slide toward the inside of the tank body 1 through the inner ring 10, the rubber sleeve 11 and the outer ring 12, and the gas is transported into the inside of the tank body 1 through the gap between the gas hopper 7 and the air pipe 2;

[0052] S3. Vacuuming: The gas inside the tank body 1 is sucked by the air pipe 2, and the gas drives the round rod 5 to reset through the inner ring 10, the rubber sleeve 11 and the outer ring 12, and the filter plate 6 filters the impurity particles. Affected by the airflow, the fan blades 21 drive the cleaning cylinder 15 to rotate on the filter plate 6 through the round rod 5, and the impurity particles enter the interior of the cleaning cylinder 15 through the inlet 17.

Claims

1. A solid hydrogen storage material mechanical stability testing device, comprising a tank (1), characterized in that: The wall of the tank body (1) is provided with a circular opening, the interior of the circular opening is fixedly connected to an air pipe (2), the air pipe (2) is in communication with the tank body (1), the inner wall of the air pipe (2) is fixedly connected to a support plate (3), the support plate (3) is located at one end of the air pipe (2) close to the tank body (1), the support plate (3) is fixedly connected to a cylinder (4), the cylinder (4) is coaxially arranged with the air pipe (2), the cylinder (4) is slidably connected to a round rod (5), a limited space is fixedly arranged on the round rod (5) A positioning block (25) is provided, one end of the round rod (5) close to the tank body (1) is rotatably connected to a filter plate (6), an air hopper (7) is fixedly connected to the filter plate (6), and the air hopper (7) surrounds the outer side of the filter plate (6); one end of the air pipe (2) close to the tank body (1) is provided with a round groove (8), the inside of the round groove (8) is slidably connected to a slide rod (9), and the slide rod (9) is fixedly connected to the air hopper (7); and one end of the round rod (5) away from the filter plate (6) is provided with a guide component.

2. A solid hydrogen storage material mechanical stability testing device according to claim 1, characterized in that: The guide assembly comprises an inner ring (10), a rubber sleeve (11) and an outer ring (12); the inner ring (10) is rotatably connected to the round rod (5); the rubber sleeve (11) is fixedly connected to the outer ring of the inner ring (10); and the outer ring (12) is fixedly connected to the outer ring of the rubber sleeve (11).

3. A solid hydrogen storage material mechanical stability testing device according to claim 2, characterized in that: The guide assembly further comprises a slide groove (13) and a slide plate (14), wherein the slide groove (13) and the slide plate (14) are both provided in two numbers, the slide groove (13) is provided on the inner wall of the trachea (2), the two slide grooves (13) are symmetrically distributed about the axis of the trachea (2), one end of the slide plate (14) is fixedly connected to the outer ring (12), and the other end of the slide plate (14) is slidably connected in the corresponding slide groove (13).

4. A solid hydrogen storage material mechanical stability testing device according to claim 3, characterized in that: A cleaning cylinder (15) is fixedly connected to the round rod (5). The cleaning cylinder (15) is located on the side of the filter plate (6) facing away from the cylinder (4). The cleaning cylinder (15) is slidably fitted on the filter plate (6). An inlet (17) is provided on the side wall of the cleaning cylinder (15).

5. A solid hydrogen storage material mechanical stability testing device according to claim 4, characterized in that: A cleaning strip (16) is fixedly connected to the outer wall of the cleaning cylinder (15). The cleaning strip (16) is located on a side of the cleaning cylinder (15) close to the inlet (17). The cleaning strip (16) is slidably fitted on the filter plate (6). The cleaning strip (16) is in the shape of a triangular prism.

6. A solid hydrogen storage material mechanical stability testing device according to claim 5, characterized in that: A circular ring (20) is fixedly connected to the circular rod (5), and the circular ring (20) is located between the cylinder (4) and the inner ring (10). A fan blade (21) is fixedly connected to the outer ring of the circular ring (20), and the fan blade (21) is provided in plurality, and the plurality of fan blades (21) are evenly distributed around the circular ring (20).

7. A solid hydrogen storage material mechanical stability testing device according to claim 6, characterized in that: The interior of the cleaning cylinder (15) is provided with a sealing component that cooperates with the inlet (17), and the sealing component includes a pressure strip (18) and a spring (19). The pressure strip (18) is sealed with the inlet (17), one end of the spring (19) is fixedly connected to the pressure strip (18), and the other end of the spring (19) is fixedly connected to the inner wall of the cleaning cylinder (15).

8. A solid hydrogen storage material mechanical stability testing device according to claim 7, characterized in that: A plurality of circular holes (24) are provided on the side wall of the cleaning cylinder (15).

9. A solid hydrogen storage material mechanical stability testing device according to claim 1, characterized in that: The tank body (1) is provided with a square opening (22), and the interior of the square opening (22) is sealed with a sealing plate (23).

10. A method for testing the mechanical stability of solid hydrogen storage materials, characterized in that: The device for testing the mechanical stability of solid hydrogen storage materials according to any one of claims 1 to 9 further comprises the following steps: S1, discharging materials: opening the sealing plate (23) and placing the materials into the tank body (1) through the square opening (22); S2, inflation: gas is transported from the air pipe (2) to the inside of the tank body (1), and the gas pushes the round rod (5) to slide toward the inside of the tank body (1) through the inner ring (10), the rubber sleeve (11) and the outer ring (12), and the gas is transported into the inside of the tank body (1) through the gap between the gas hopper (7) and the air pipe (2); S3, air extraction: The air inside the tank body (1) is sucked by the air pipe (2), and the air passes through the inner ring (10), the rubber sleeve (11) and the outer ring (12) to drive the round rod (5) to reset, and the filter plate (6) filters the foreign particles. Under the influence of the airflow, the fan blade (21) drives the cleaning cylinder (15) to rotate on the filter plate (6) through the round rod (5), and the foreign particles enter the interior of the cleaning cylinder (15) through the inlet (17).

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