A testing device and method for the mechanical stability of solid hydrogen storage materials

Abstract

This invention discloses a mechanical stability testing device and method for solid hydrogen storage materials, relating to the technical field of testing devices. The device includes a tank with a circular opening in its wall. A gas pipe is fixedly connected inside the opening and communicates with the tank. A support plate is fixedly connected to the inner wall of the gas pipe, located at the end of the gas pipe near the tank. A cylinder is fixedly connected to the support plate, coaxially arranged with the gas pipe. A circular rod is slidably connected to the cylinder, and a limit block is fixedly installed on the rod. A filter plate is rotatably connected to the end of the rod near the tank, and a gas bucket is fixedly connected to the filter plate, surrounding the outer side of the filter plate. This mechanical stability testing device for solid hydrogen storage materials, through its structure including a filter plate, gas bucket, and guiding components, can filter impurity particles while simultaneously guiding airflow and protecting the filter plate.

Description

Technical Field

[0001] This invention relates to the field of testing equipment technology, and in particular to a testing device and method for the mechanical stability of solid hydrogen storage materials. Background Technology

[0002] Hydrogen energy is a clean and pollution-free new energy source, but its low bulk density and low liquefaction temperature under normal conditions make it difficult to store and transport, limiting its promotion and application. Magnesium-based hydrogen storage materials are a promising solid hydrogen storage material, offering high hydrogen storage capacity, wide availability, non-toxicity, low cost, and good safety, making them suitable for large-scale hydrogen storage and transportation. 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 achieving hydrogen storage and release. Before being put into use, hydrogen storage materials need to undergo mechanical stability testing.

[0003] In mechanical stability testing of hydrogen storage materials, multiple filling and degassing operations are required. After repeated adsorption, the hydrogen storage material will pulverize, generating a large number of impurity particles. During the degassing operation, these impurity particles can easily enter the gas pipeline with the gas, damaging valves and fittings, affecting the airtightness and accuracy of the testing instruments, and even posing safety hazards.

[0004] Therefore, it is necessary to propose a testing device and method for the mechanical stability of solid hydrogen storage materials to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a device and method for testing the mechanical stability of solid hydrogen storage materials, in order to solve the problem that impurity particles can easily enter the gas pipeline with the gas during the exhaust operation, damaging valves and fittings, affecting the airtightness and accuracy of the testing instrument, and even causing safety hazards.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a mechanical stability testing device for solid hydrogen storage materials, comprising a tank, a circular opening on the wall of the tank, a gas pipe fixedly connected inside the circular opening, the gas pipe communicating with the tank, a support plate fixedly connected to the inner wall of the gas pipe, the support plate being located at the end of the gas pipe near the tank, a cylinder fixedly connected to the support plate, the cylinder being coaxially arranged with the gas pipe, a circular rod slidably connected to the cylinder, a limit block fixedly provided on the circular rod, a filter plate rotatably connected to the end of the circular rod near the tank, a gas bucket fixedly connected to the filter plate, the gas bucket surrounding the outer side of the filter plate, a circular groove on the end of the gas pipe near the tank, a sliding rod slidably connected inside the circular groove, the sliding rod being fixedly connected to the gas bucket, and a guide assembly provided at the end of the circular rod away from the filter plate.

[0007] Preferably, the guide assembly includes 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 further includes a chute and a slide plate, and there are two chutes and two slide plates. The chute is opened on the inner wall of the trachea and the two chutes 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 chute.

[0009] Preferably, a cleaning cylinder is fixedly connected to the round rod, the cleaning cylinder is located on the side of the filter plate opposite to the round cylinder, the cleaning cylinder slides against the filter plate, and an inlet is provided 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 near the inlet. The cleaning strip slides against the filter plate and is triangular prism in shape.

[0011] Preferably, a circular ring is fixedly connected to the circular rod, the circular ring is located between the cylinder and the inner ring, and a fan blade is fixedly connected to the outer ring of the circular ring. The fan blade is configured to be multiple, and the multiple fan blades are evenly distributed around the circular ring.

[0012] Preferably, the cleaning cylinder is provided with a sealing component that cooperates with the inlet. The sealing component 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, the cleaning cylinder has several round holes on its side wall.

[0014] Preferably, the tank body has a square opening, and a sealing plate is fitted inside the square opening.

[0015] This invention also discloses a method for testing the mechanical stability of solid hydrogen storage materials, including the aforementioned device for testing the mechanical stability of solid hydrogen storage materials, and further comprising the following steps:

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

[0017] S2, Inflation: Gas is supplied into the tank through the air pipe. The gas pushes the round rod to slide inward into the tank through the inner ring, rubber sleeve and outer ring. The gas is delivered into the tank through the gap between the air bucket and the air pipe.

[0018] S3. Air extraction: Gas is drawn from inside the tank through the air pipe. The gas passes through the inner ring, rubber sleeve and outer ring, which drives the round rod to return to its original position. The filter plate filters the impurity particles. Affected by the airflow, the fan blade drives the cleaning cylinder to rotate against the filter plate through the round rod. Impurity particles enter the interior of the cleaning cylinder through the inlet.

[0019] The technical effects and advantages of this invention are as follows:

[0020] 1. This invention, by setting up a filter plate, air bucket and guide components, can filter impurity particles and at the same time guide the airflow and protect the filter plate.

[0021] 2. During the exhaust operation, the cleaning strip adheres to the filter plate and pushes it, allowing impurity particles to enter the interior of the cleaning cylinder through the inlet, thus achieving an automatic cleaning effect;

[0022] 3. The installation of pressure bars, springs, and other structures can prevent impurities from scattering randomly inside the cleaning cylinder. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the mechanical stability testing device for solid hydrogen storage materials according to the present invention.

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

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

[0026] Figure 4 This is a schematic diagram of the tank 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 This is a schematic diagram of the filter plate and air duct structure of the present invention.

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

[0030] In the diagram: 1. Tank body; 2. Air pipe; 3. Support plate; 4. Cylinder; 5. Round rod; 6. Filter plate; 7. Air hopper; 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. Circular ring; 21. Fan blade; 22. Square opening; 23. Sealing plate; 24. Round hole; 25. Limiting block. Detailed Implementation

[0031] 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.

[0032] This invention provides, for example Figures 1 to 7 The device shown is a mechanical stability testing apparatus for solid hydrogen storage materials. It includes a tank 1 with a square opening 22. A sealing plate 23 is fitted inside the square opening 22. In use, the sealing plate 23 is opened, and the material is placed into the tank 1 through the square opening 22. A circular opening is formed in the wall of the tank 1, and a gas pipe 2 is fixedly connected inside the circular opening, communicating with the tank 1. The gas pipe 2 is connected to a gas supply device for filling and venting the tank 1, thus testing the mechanical stability of the solid hydrogen storage material. Furthermore, the tank 1 is equipped with a temperature control device, including a heating plate, 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 common existing technologies and will not be described in detail here.

[0033] Considering that the hydrogen storage material will generate a large number of impurity particles after multiple filling and venting operations, to prevent these 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 the end of the gas pipe 2 closest to the tank body 1. A cylinder 4 is fixedly connected to the support plate 3, and 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 closest to the tank body 1. A gas bucket 7 is fixedly connected to the filter plate 6, and the gas bucket 7 surrounds the outside of the filter plate 6. During the venting operation, the filter plate 6 and the gas bucket 7 cooperate and fit against the end of the gas pipe 2, and the filter plate 6 can filter out impurity particles. During the filling operation, the round rod 5 and the filter plate 6 move synchronously towards the tank body 1, creating a gap between the gas bucket 7 and the end of the gas pipe 2, allowing gas to enter the interior of the tank body 1 through the gap.

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

[0035] To prevent the air bucket 7 and the filter plate 6 from rotating arbitrarily, a circular groove 8 is provided at one end of the air pipe 2 near the tank 1. A sliding rod 9 is slidably connected inside the circular groove 8 and is fixedly connected to the air bucket 7.

[0036] To enable the movement of the air bucket 7 and the filter plate 6, a guide assembly is provided at the end of the round rod 5 away from the filter plate 6. 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 degree of elasticity.

[0037] During the exhaust operation, under the action of 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 fold in the direction away from the tank body 1 (see reference). Figure 5 The filter plate 6 is attached to the end of the air pipe 2 by the round rod 5 and the filter plate 6 can filter impurity particles.

[0038] During air intake, under the action of airflow, the rubber sleeve 11 and outer ring 12 will drive the round rod 5 and filter plate 6 to move synchronously towards the tank 1. The synchronous movement of the round rod 5 and filter plate 6 towards the tank 1 creates a gap between the air bucket 7 and the end of the air pipe 2, while the limiting block 25 limits the movement position. At the same time, the rubber sleeve 11 and outer ring 12 will fold towards the tank 1, forming a structure with a gradually increasing outer diameter along the direction of airflow. The airflow will blow along its outer wall and adhere to the inner wall of the air pipe 2, flowing into the tank 1 through the gap between the air bucket 7 and the end of the air pipe 2. This reduces the reverse blowing force on the filter plate 6, extends its service life, ensures the filtration effect, and at the same time serves to guide the airflow and protect the filter plate 6.

[0039] The present invention, by setting up a filter plate 6, an air bucket 7 and a guide assembly, can filter impurity particles and at the same time guide airflow and protect the filter plate 6.

[0040] To ensure the smooth folding of the rubber sleeve 11 and the outer ring 12, the guide assembly also includes a slide groove 13 and a slide plate 14. Two slide grooves 13 and two slide plates 14 are provided. The slide groove 13 is formed on the inner wall of the air tube 2, and the two slide grooves 13 are symmetrically distributed about the axis of the air tube 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 slide plate 14 guide the rubber sleeve 11 and the outer ring 12.

[0041] To clean impurities from 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 round cylinder 4, and it slides against the filter plate 6. An inlet 17 is provided on the side wall of the cleaning cylinder 15. A cleaning strip 16 is fixedly connected to the outer wall of the cleaning cylinder 15, located on the side of the cleaning cylinder 15 near the inlet 17. The cleaning strip 16 slides against the filter plate 6 and is triangular in shape. The round rod 5 drives the cleaning cylinder 15 to rotate, while the cleaning strip 16 pushes and scrapes against the filter plate 6, causing impurities to enter the interior of the cleaning cylinder 15 through the inlet 17.

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

[0043] When the exhaust operation is performed, the fan blade 21 rotates under the action of airflow, which in turn drives the cleaning cylinder 15 to rotate through the round rod 5. The cleaning strip 16 adheres to the filter plate 6 and pushes and scrapes, and the impurity particles enter the interior of the cleaning cylinder 15 through 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] Meanwhile, considering that during the intake operation, the airflow will also drive the fan blade 21 to rotate, and it is easy to cause the cleaning cylinder 15 to rotate in the opposite direction, but it will not be able to collect impurities and will easily scrape off the impurities, the inner ring 10, rubber sleeve 11 and outer ring 12 and other structures can block the fan blade 21 during the intake operation, so the fan blade 21 and the cleaning cylinder 15 will not rotate.

[0045] To prevent impurities collected inside the cleaning cylinder 15 from scattering randomly, a sealing assembly that cooperates with the inlet 17 is provided inside the cleaning cylinder 15. The sealing assembly includes a pressure strip 18 and a spring 19. In actual use, multiple springs 19 are used. The pressure strip 18 is sealed to 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 cylinder 15 rotates, since the inlet 17 is at the front end of the rotation direction of the cleaning cylinder 15, the pressure bar 18 will move into the cleaning cylinder 15 due to the wind resistance, so that the inlet 17 opens, making it easier for impurities to enter its interior. After cleaning, the reset force of the spring 19 causes the pressure bar 18 to reset and close the inlet 17 to prevent impurity particles from falling randomly.

[0047] The impurities inside the cleaning cylinder 15 can be cleaned periodically by staff.

[0048] To reduce the resistance of the cleaning cylinder 15 during the cleaning process, several round holes 24 are provided on the side wall of the cleaning cylinder 15, and the inner diameter of the round holes 24 is small so that impurity particles cannot pass through.

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

[0050] S1. Discharge: Open the sealing plate 23 and put the material into the inside of the tank 1 through the square opening 22;

[0051] S2, Inflation: Gas is supplied to the inside of the tank 1 through the air pipe 2. The gas pushes the round rod 5 to slide towards the inside of the tank 1 through the inner ring 10, the rubber sleeve 11 and the outer ring 12. The gas is supplied into the inside of the tank 1 through the gap between the air bucket 7 and the air pipe 2.

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

Claims

1. A mechanical stability testing device for solid hydrogen storage materials, comprising a tank (1), characterized in that: The tank (1) has a circular opening on its wall. An air pipe (2) is fixedly connected inside the circular opening and communicates with the tank (1). A support plate (3) is fixedly connected to the inner wall of the air pipe (2). The support plate (3) is located at the end of the air pipe (2) near the tank (1). A cylinder (4) is fixedly connected to the support plate (3). The cylinder (4) is coaxially arranged with the air pipe (2). A round rod (5) is slidably connected to the cylinder (4). A limited... The position block (25) has a filter plate (6) rotatably connected to one end of the round rod (5) near the tank (1), and an air bucket (7) is fixedly connected to the filter plate (6). The air bucket (7) surrounds the outside of the filter plate (6). A round groove (8) is opened at one end of the air pipe (2) near the tank (1). A slide rod (9) is slidably connected inside the round groove (8). The slide rod (9) is fixedly connected to the air bucket (7). A guide component is provided at one end of the round rod (5) away from the filter plate (6). 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). The outer ring (12) is fixedly connected to the outer ring of the rubber sleeve (11). The guide assembly also includes a chute (13) and a slide plate (14). There are two chute (13) and two slide plates (14). The chute (13) is opened on the inner wall of the air tube (2). The two chute (13) are symmetrically distributed about the axis of the air tube (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 chute (13). 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 round cylinder (4). The cleaning cylinder (15) slides against the filter plate (6). An inlet (17) is provided on the side wall of the cleaning cylinder (15).

2. The mechanical stability testing device for solid hydrogen storage materials according to claim 1, 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 the side of the cleaning cylinder (15) near the inlet (17). The cleaning strip (16) slides and adheres to the filter plate (6). The cleaning strip (16) is triangular prism-shaped.

3. The mechanical stability testing device for solid hydrogen storage materials according to claim 2, characterized in that: A ring (20) is fixedly connected to the round rod (5). The 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 ring (20). Multiple fan blades (21) are provided, and multiple fan blades (21) are evenly distributed around the ring (20).

4. The mechanical stability testing device for solid hydrogen storage materials according to claim 3, characterized in that: The cleaning cylinder (15) is provided with a sealing component that cooperates with the inlet (17). The sealing component includes a pressure strip (18) and a spring (19). The pressure strip (18) is sealed to 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).

5. The mechanical stability testing device for solid hydrogen storage materials according to claim 4, characterized in that: The cleaning cylinder (15) has several round holes (24) on its side wall.

6. The mechanical stability testing device for solid hydrogen storage materials according to claim 1, characterized in that: The tank body (1) has a square opening (22), and the inside of the square opening (22) is sealed with a sealing plate (23).

7. 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 as described in any one of claims 1-6 further includes the following steps: S1. Discharge: Open the sealing plate (23) and put the material into the inside of the tank (1) through the square opening (22); S2, Inflation: Gas is supplied from the air pipe (2) to the inside of the tank (1). The gas pushes the round rod (5) to slide towards the inside of the tank (1) through the inner ring (10), rubber sleeve (11) and outer ring (12). The gas is supplied into the inside of the tank (1) through the gap between the air bucket (7) and the air pipe (2). S3, Gas extraction: Gas is extracted from the inside of the tank (1) by the air pipe (2). The gas passes through the inner ring (10), rubber sleeve (11) and outer ring (12) to drive the round rod (5) to reset. The filter plate (6) filters the impurity particles. Affected by the airflow, the fan blade (21) drives the cleaning cylinder (15) to rotate on the filter plate (6) through the round rod (5). The impurity particles enter the interior of the cleaning cylinder (15) through the inlet (17).

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