Method for testing performance of solid hydrogen storage material

Abstract

The invention discloses a solid hydrogen storage material performance test method, which comprises a gas preparation device, a tail end collection device and a material installation device, the gas preparation device comprises a gas storage tank, one side of the gas storage tank is provided with a first gas inlet pipe, one end of the first gas inlet pipe is connected with a hydrogen gas source, one side of the gas storage tank is provided with a second gas inlet pipe, and the other side of the gas storage tank is connected with a gas outlet pipe; one end of the second gas inlet pipe is connected with a nitrogen gas source, first valves are installed on the first gas inlet pipe and the second gas inlet pipe, a first connecting pipe is installed on the other side of the gas storage tank, a first end pipe is installed at the end, away from the gas storage tank, of the first connecting pipe, and a second valve is installed on the first connecting pipe; according to the invention, during working, the amount of hydrogen introduced through the arranged gas storage tank is determined, the amount of hydrogen in residual gas can be measured and calculated through the hue spectrometer, and the hydrogen capture capability of solid hydrogen storage materials with different lengths can be detected through the hydrogen collection amount of the solid hydrogen storage materials with different lengths.

Description

Technical Field

[0001] The invention belongs to the technical field of solid-state hydrogen storage material testing, and specifically relates to a solid-state hydrogen storage material performance testing method. Background Art

[0002] Existing hydrogen storage methods include gaseous hydrogen storage, liquid hydrogen storage and solid hydrogen storage, among which solid storage uses the physical adsorption or chemical reaction of solids to store hydrogen in solid materials. Solid-state storage can generally be safe, efficient and high-density, and is the most promising after gaseous storage and liquid storage. Research has found that solid-state hydrogen storage materials need to be tested for performance during production. Existing tests can generally only test the absorption and release devices of solid-state hydrogen storage materials, and cannot test whether the hydrogen collection capacity of solid-state hydrogen storage materials will change when the length of solid-state hydrogen storage materials is longer and the volume is larger, which makes it inconvenient to find a better installation length for solid-state hydrogen storage materials. Summary of the invention

[0003] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a method for testing the performance of solid-state hydrogen storage materials, which effectively solves the problem that it is difficult to test the hydrogen collection capacity of solid-state hydrogen storage materials of different lengths.

[0004] To achieve the above object, the present invention provides the following technical solution: a solid hydrogen storage material performance testing method, the testing method is as follows:

[0005] S1. Installation of solid hydrogen storage materials: Place the solid hydrogen storage materials tested for the first time into the material installation equipment so that the gas can flow through the solid hydrogen storage materials during the test;

[0006] S2. Gas preparation: prepare a mixed gas of hydrogen and nitrogen through a gas preparation device, and record the original hydrogen content;

[0007] S3, ventilation: the mixed gas is introduced into the material installation equipment, and the solid hydrogen storage material captures and collects the hydrogen in the mixed gas;

[0008] S4, terminal detection: the remaining mixed gas enters the tail end collection device, the hydrogen content in the remaining gas is detected, the amount of hydrogen collected is obtained, and the volume of the solid hydrogen storage material is used to obtain the first unit volume of hydrogen collection;

[0009] S5. Repeat the test and comparison: Repeat the above operation to obtain the hydrogen collection capacity per unit volume of multiple groups of solid-state hydrogen storage materials with different lengths. Through multiple groups of hydrogen collection capacity per unit volume data, it can be determined whether the hydrogen collection capacity of the solid-state hydrogen storage material will change when the length of the solid-state hydrogen storage material is longer and the volume is larger.

[0010] A solid-state hydrogen storage material performance testing device includes gas preparation equipment, tail end collection equipment and material installation equipment, the gas preparation equipment includes a gas storage tank, a first air inlet pipe is installed on one side of the gas storage tank, one end of the first air inlet pipe is connected to a hydrogen gas source, a second air inlet pipe is installed on one side of the gas storage tank, one end of the second air inlet pipe is connected to a nitrogen gas source, a first valve is installed on the first air inlet pipe and the second air inlet pipe, a first connecting pipe is installed on the other side of the gas storage tank, a first end pipe is installed on the end of the first connecting pipe away from the gas storage tank, a second valve is installed on the first connecting pipe, and a first air pump is installed on the first connecting pipe.

[0011] Preferably, the tail end collection device includes a collecting tank, a second connecting pipe is installed on the side of the collecting tank close to the gas storage tank, a second end pipe is installed on the end of the second connecting pipe away from the collecting tank, a third valve is installed on the second connecting pipe, a second air pump is installed on the second connecting pipe, an exhaust pipe is installed on the side of the collecting tank away from the gas storage tank, a chromatograph is connected to the end of the exhaust pipe away from the collecting tank, a fourth valve is installed on the exhaust pipe, a third air pump is installed on the exhaust pipe, and the material installation equipment is arranged between the first end pipe and the second end pipe.

[0012] Preferably, the material installation equipment includes a fixed box arranged between the first end tube and the second end tube, the gas storage tank, the collecting tank and the bottom support legs of the fixed box are all fixedly installed on the base, the base is fixedly installed on the ground, a lower placement cavity is opened inside the fixed box, a top cover is provided above the fixed box, an upper placement cavity is provided inside the top cover, when the top cover is installed on the top of the fixed box, the lower placement cavity and the upper placement cavity are combined to form a placement cavity, the placement cavity is used to place solid hydrogen storage materials, positioning grooves are evenly opened on the top wall of the fixed box, positioning blocks are evenly installed on the bottom wall of the top cover, when the top cover is installed on the top of the fixed box, the positioning blocks are stuck into the inside of the positioning grooves, a material limiting assembly is installed inside the lower placement cavity of the fixed box, and handles are symmetrically installed on the top of the top cover.

[0013] Preferably, the material limiting assembly includes two limiting plates symmetrically arranged in the lower placement cavity. When the top cover is installed on the top of the fixed box, the outer wall of the limiting plate is in close contact with the inner wall of the placement cavity. The two limiting plates are used to limit solid hydrogen storage materials of different lengths. Pressure sensors are installed on the sides of the two limiting plates close to each other. The pressure sensors are used to locate the position of the limiting plates. An installation clamping assembly is installed between the limiting plate and the top cover.

[0014] Preferably, first end grooves are symmetrically provided at both ends of the fixed box, and connecting pipes are installed on the sides of the two limit plates away from each other, one end of the connecting pipe passes through the first end groove to the outside of the top cover, and a sealing ring is installed on the end of the connecting pipe away from the limit plate. The two connecting pipes are movably installed inside the first end tube and the second end tube respectively, and the outer walls of the sealing rings at the ends of the two connecting tubes are tightly attached to the inner walls of the first end tube and the inner walls of the second end tube respectively, and the inner cavity of the connecting tube is connected to the side of the limit plate close to the solid hydrogen storage material.

[0015] Preferably, a sliding frame is installed at the bottom end of the fixed box, and two sliding blocks are symmetrically and slidingly installed inside the sliding frame. A connecting frame is installed on the side of the two sliding blocks that are away from each other, and the two connecting frames are respectively fixedly connected to the two connecting pipes. A double-headed screw is rotatably installed inside the sliding frame, and the two sliding blocks are respectively threadedly connected to two thread grooves on the double-headed screw that are opened in opposite directions. One end of the double-headed screw is fixedly connected to the output shaft of the motor, and the motor is fixedly installed at one end of the sliding frame.

[0016] Preferably, the installation clamping assembly includes second end grooves symmetrically opened at both ends of the top cover, a clamping rod is movably installed inside the second end groove, one end of the clamping rod is connected to the limit plate, and a ruler is symmetrically installed at both ends of the top cover, an indicator block is fixedly installed on the clamping rod, and the indicator block is slidably installed inside the ruler. The ruler guides the clamping rod on the one hand, and measures the length of the solid hydrogen storage material on the other hand.

[0017] Preferably, a slot is provided on the side of the limit plate close to the clamping rod, one end of the clamping rod is inserted into the interior of the slot, a clamping slot is provided at equal angles on the inner wall of the slot, a movable slot is provided inside the clamping rod, a connecting slot is provided on the inner wall of the movable slot at equal angles, the connecting slot corresponds to the clamping slot, a clamping block is movably installed inside the connecting slot, the clamping block is clamped in the interior of the clamping slot, a movable plate is movably installed inside the movable slot, the movable plate is located on the side of the clamping block away from the limit plate, a connecting block is installed on the side of the movable plate close to the limit plate, connecting rods are provided at equal angles between the connecting block and each clamping block, and both ends of the connecting rod are respectively hinged to the clamping block and the connecting block.

[0018] Preferably, a spring is installed on the side of the movable plate away from the limiting plate, and the spring is fixedly connected to the inner wall of one end away from the limiting plate. A rod groove is opened on the side of the movable groove away from the limiting plate, and one end of the rod groove passes through the end of the clamping rod away from the limiting plate. A pull rod is installed on the side of the movable plate away from the limiting plate, and one end of the pull rod passes through the outside of the clamping rod.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1) During operation, the amount of hydrogen introduced by the set gas storage tank is determined, and the amount of hydrogen in the remaining gas can be measured by a chromatograph. The hydrogen collection amount of the solid-state hydrogen storage material at different lengths is used to detect the hydrogen capture capacity of the solid-state hydrogen storage material of different lengths, and then it can be concluded that when the length of the solid-state hydrogen storage material is longer and the volume is larger, whether the hydrogen collection capacity of the solid-state hydrogen storage material will change, which is convenient for testing the performance of solid-state hydrogen storage materials of different lengths and volumes;

[0021] 2) During operation, the fixed box is connected with the top cover by clamping. When the solid hydrogen storage material is installed, its outer wall is closely attached to the inner wall of the placement cavity, and the limit plates on both sides limit the two ends of the solid hydrogen storage material to ensure the stability of the solid hydrogen storage material during testing and the accuracy of the test. A pressure sensor is installed on the surface of the limit plate, so that the staff can determine the position of the solid hydrogen storage material. At the same time, under the action of the pressure sensor, a gap is generated between the solid hydrogen storage material and the limit plate to avoid the end of the connecting pipe from being closed, so as to ensure that the gas can pass through the solid hydrogen storage material smoothly.

[0022] 3) During operation, the two ends of the top cover are symmetrically provided with clamping rods, which are clamped with the limit plates, and the limit plates are arranged inside the fixed box, and the clamping rods are arranged on the top cover, which can ensure the fixed installation of the fixed box and the top cover, avoid gas leakage, and improve the accuracy of the test results. At the same time, the clamping rods can move with the limit plates, and the solid hydrogen storage materials can be measured through the indicator blocks and rulers, which is convenient for subsequent result calculations. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0024] In the attached picture:

[0025] Figure 1 It is a structural schematic diagram of a solid hydrogen storage material performance testing device of the present invention;

[0026] Figure 2 It is a schematic diagram of the material installation assembly structure of the present invention;

[0027] Figure 3 It is a schematic diagram of the structure of the material limiting component of the present invention;

[0028] Figure 4 It is a schematic diagram of the structure of the limiting plate of the present invention;

[0029] Figure 5 It is a schematic diagram of the internal structure of the limiting plate of the present invention;

[0030] Figure 6It is a schematic diagram of the internal structure of the clamping rod of the present invention.

[0031] In the figure: 1. Base; 2. Gas preparation equipment; 201. Gas storage tank; 202. First air inlet pipe; 203. Second air inlet pipe; 204. First valve; 205. First connecting pipe; 206. First end pipe; 207. Second valve; 208. First air pump; 3. Tail end collection equipment; 301. Collection tank; 302. Second connecting pipe; 303. Second end pipe; 304. Third valve; 305. Second air pump; 306. Exhaust pipe; 307. Fourth valve; 308. Third air pump; 4. Material installation equipment; 401. Fixed box; 402. Top cover; 403. Positioning groove; 404. Positioning block; 405. Handle; 406. Material limit assembly; 4061. Limit plate; 4062, first end groove; 4063, connecting pipe; 4064, sealing ring; 4065, pressure sensor; 4066, sliding frame; 4067, sliding block; 4068, connecting frame; 4069, double-headed screw; 40610, motor; 407, mounting card assembly; 4071, second end groove; 4072, card rod; 4073, ruler; 4074, indicator block; 4075, slot; 4076, card slot; 4077, movable slot; 4078, connecting groove; 4079, card block; 40710, movable plate; 40711, connecting block; 40712, connecting rod; 40713, spring; 40714, rod slot; 40715, pull rod. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] Embodiment 1, by Figure 1-6The present invention relates to a solid-state hydrogen storage material performance testing device, comprising a gas preparation device 2, a tail end collection device 3 and a material installation device 4, the gas preparation device 2 comprises a gas storage tank 201, a first gas inlet pipe 202 is installed on one side of the gas storage tank 201, one end of the first gas inlet pipe 202 is connected to a hydrogen gas source, a second gas inlet pipe 203 is installed on one side of the gas storage tank 201, one end of the second gas inlet pipe 203 is connected to a nitrogen gas source, a first valve 204 is installed on the first gas inlet pipe 202 and the second gas inlet pipe 203, a first connecting pipe 205 is installed on the other side of the gas storage tank 201, and the first connecting pipe 205 is away from the gas storage tank A first end tube 206 is installed at one end of the tank 201, a second valve 207 is installed on the first connecting tube 205, and a first air pump 208 is installed on the first connecting tube 205. The amount of hydrogen introduced into the gas storage tank 201 is determined, and the amount of hydrogen in the remaining gas can be measured by a chromatograph. The hydrogen collection amount of the solid-state hydrogen storage material at different lengths can be used to detect the hydrogen capture capacity of the solid-state hydrogen storage materials of different lengths, and then it can be concluded that when the length of the solid-state hydrogen storage material is longer and the volume is larger, whether the hydrogen collection capacity of the solid-state hydrogen storage material will change, which is convenient for detecting the performance of solid-state hydrogen storage materials of different lengths and volumes.

[0034] The tail end collection device 3 includes a collection tank 301, a second connecting pipe 302 is installed on the side of the collection tank 301 close to the gas storage tank 201, a second end pipe 303 is installed on the end of the second connecting pipe 302 away from the collection tank 301, a third valve 304 is installed on the second connecting pipe 302, a second air pump 305 is installed on the second connecting pipe 302, an exhaust pipe 306 is installed on the side of the collection tank 301 away from the gas storage tank 201, the end of the exhaust pipe 306 away from the collection tank 301 is connected to a chromatograph, a fourth valve 307 is installed on the exhaust pipe 306, a third air pump 308 is installed on the exhaust pipe 306, and the material installation device 4 is arranged between the first end pipe 206 and the second end pipe 303.

[0035] The material installation equipment 4 includes a fixed box 401 arranged between the first end tube 206 and the second end tube 303, the gas storage tank 201, the collecting tank 301 and the bottom support legs of the fixed box 401 are all fixedly installed on the base 1, the base 1 is fixedly installed on the ground, a lower placement cavity is opened inside the fixed box 401, a top cover 402 is arranged above the fixed box 401, an upper placement cavity is arranged inside the top cover 402, when the top cover 402 is installed on the top of the fixed box 401, the lower placement cavity and the upper placement cavity are combined to form a placement cavity, the placement cavity is used to place solid hydrogen storage materials, positioning grooves 403 are evenly opened on the top wall of the fixed box 401, positioning blocks 404 are evenly installed on the bottom wall of the top cover 402, when the top cover 402 is installed on the top of the fixed box 401, the positioning blocks 404 are snapped into the inside of the positioning grooves 403, a material limiting assembly 406 is installed inside the lower placement cavity of the fixed box 401, and a handle 405 is symmetrically installed on the top of the top cover 402.

[0036] The material limiting assembly 406 includes two limiting plates 4061 symmetrically arranged in the lower placement cavity. When the top cover 402 is installed on the top of the fixed box 401, the outer wall of the limiting plate 4061 is in close contact with the inner wall of the placement cavity. The two limiting plates 4061 are used to limit the solid hydrogen storage materials of different lengths. Pressure sensors 4065 are installed on the sides of the two limiting plates 4061 close to each other. The pressure sensor 4065 is used to locate the position of the limiting plates 4061. An installation clamping assembly 407 is installed between the limiting plates 4061 and the top cover 402. The first end grooves 4062 are symmetrically opened at both ends of the fixed box 401. The two A connecting pipe 4063 is installed on the side away from each other of the limiting plates 4061, one end of the connecting pipe 4063 passes through the first end groove 4062 to the outside of the top cover 402, and a sealing ring 4064 is installed on the end of the connecting pipe 4063 away from the limiting plate 4061. The two connecting pipes 4063 are movably installed inside the first end pipe 206 and the second end pipe 303, respectively, and the outer walls of the sealing rings 4064 at the ends of the two connecting pipes 4063 are tightly attached to the inner wall of the first end pipe 206 and the inner wall of the second end pipe 303, respectively, and the inner cavity of the connecting pipe 4063 is connected to the side of the limiting plate 4061 close to the solid hydrogen storage material, and fixed The bottom end of the box 401 is installed with a sliding frame 4066, and two sliding blocks 4067 are symmetrically slidably installed inside the sliding frame 4066. A connecting frame 4068 is installed on the side of the two sliding blocks 4067 that are away from each other. The two connecting frames 4068 are respectively fixedly connected to the two connecting pipes 4063. A double-headed screw 4069 is rotatably installed inside the sliding frame 4066. The two sliding blocks 4067 are respectively threadedly connected to two thread grooves on the double-headed screw 4069 that are opened in opposite directions. One end of the double-headed screw 4069 is fixedly connected to the output shaft of the motor 40610, and the motor 40610 is fixedly installed on the sliding frame 406 6, the fixing box 401 is snap-connected with the top cover 402. When the solid-state hydrogen storage material is installed, its outer wall is closely attached to the inner wall of the placement cavity, and the limiting plates 4061 on both sides limit the two ends of the solid-state hydrogen storage material to ensure the stability of the solid-state hydrogen storage material during testing and to ensure the accuracy of the test. A pressure sensor 4065 is installed on the surface of the limiting plate 4061, so that the staff can determine the position of the solid-state hydrogen storage material. At the same time, under the action of the pressure sensor 4065, a gap is generated between the solid-state hydrogen storage material and the limiting plate 4061 to avoid the end of the connecting pipe 4063 being closed, thereby ensuring that the gas can pass through the solid-state hydrogen storage material smoothly.

[0037] The installation clamping assembly 407 includes a second end groove 4071 symmetrically opened at both ends of the top cover 402, a clamping rod 4072 is movably installed inside the second end groove 4071, one end of the clamping rod 4072 is connected to the limit plate 4061, and a scale 4073 is symmetrically installed at both ends of the top cover 402. An indicator block 4074 is fixedly installed on the clamping rod 4072, and the indicator block 4074 is slidably installed inside the scale 4073. The scale 4073 guides the clamping rod 4072 on the one hand and measures the length of the solid hydrogen storage material on the other hand. A slot 4075 is opened on the side of the limit plate 4061 close to the clamping rod 4072. One end of 4072 is inserted into the interior of slot 4075, a slot 4076 is provided at an equal angle on the inner wall of slot 4075, a movable slot 4077 is provided inside the clamping rod 4072, a connecting slot 4078 is provided at an equal angle on the inner wall of the movable slot 4077, the connecting slot 4078 corresponds to the slot 4076, a clamping block 4079 is movably installed inside the connecting slot 4078, the clamping block 4079 is clamped inside the slot 4076, a movable plate 40710 is movably installed inside the movable slot 4077, the movable plate 40710 is located on the side of the clamping block 4079 away from the limiting plate 4061, and the movable plate 40710 is close to the limiting plate 4061. A connecting block 40711 is installed on one side of 061, and a connecting rod 40712 is arranged at an equal angle between the connecting block 40711 and each clamping block 4079, and the two ends of the connecting rod 40712 are respectively hinged to the clamping block 4079 and the connecting block 40711, and a spring 40713 is installed on the side of the movable plate 40710 away from the limiting plate 4061, and the inner wall of one end of the spring 40713 away from the limiting plate 4061 is fixedly connected, and a rod groove 40714 is opened on the side of the movable groove 4077 away from the limiting plate 4061, and one end of the rod groove 40714 penetrates to the end of the clamping rod 4072 away from the limiting plate 4061, and the movable plate 40710 away from the limiting plate 4061 is fixedly connected to the inner wall of the movable plate 40710 away from the limiting plate 4061. A pull rod 40715 is installed on one side of 061, and one end of the pull rod 40715 passes through the outside of the clamping rod 4072. The clamping rods 4072 are symmetrically provided at both ends of the top cover 402. The clamping rod 4072 is clamped with the limiting plate 4061, and the limiting plate 4061 is arranged inside the fixed box 401. The clamping rod 4072 is arranged on the top cover 402, which can ensure the fixed installation of the fixed box 401 and the top cover 402, avoid gas leakage, and improve the accuracy of the test results. At the same time, the clamping rod 4072 can move with the limiting plate 4061, and can measure the solid hydrogen storage material through the indicating block 4074 and the ruler 4073, which is convenient for subsequent result measurement.

[0038] Working principle: When working, first open the top cover 402, place a shorter solid hydrogen storage material between the two limit plates 4061, cover the top cover 402 on the top of the fixed box 401, so that the positioning block 404 is inserted into the positioning groove 403, and then pull the pull rod 40715 in the clamping rod 4072 toward the side away from the limit plate 4061, so that the movable plate 40710 moves, and then pull the ends of each clamping block 4079 into the connecting groove 4078 through each connecting rod 40712, push the clamping rod 4072 toward the side of the limit plate 4061, so that one end of the clamping rod 4072 is inserted into the slot 4075, and release it. The pull rod 40715 allows the movable plate 40710 to move back under the elastic force of the spring 40713, and pushes the clamping block 4079 to move back and then clamp into the clamping groove 4076, so that the clamping rod 4072 and the limit plate 4061 are clamped and positioned, and under the clamping action of the clamping rod 4072 and the limit plate 4061, the fixed box 401 and the top cover 402 are fixed to avoid gas leakage during the test, and at the same time, the indicator block 4074 on the clamping rod 4072 is slidably connected with the ruler 4073, so that the length of the solid hydrogen storage material can be measured, and then the volume of the solid hydrogen storage material can be measured according to the length and diameter of the solid hydrogen storage material;

[0039] When in use, the motor 40610 is turned on to rotate the double-headed screw 4069, which then drives the two sliding blocks 4067 to approach each other, thereby driving the two limit plates 4061 to approach each other, until the pressure sensor 4065 contacts the solid hydrogen storage material, so that the pressure sensor 4065 is compressed to generate an induced current. At this time, the staff understands that the two limit plates 4061 limit the solid hydrogen storage material, and stops the motor 40610. Under the action of the pressure sensor 4065, there is a certain gap between the surface of the limit plate 4061 and the solid hydrogen storage material, which prevents the end of the connecting pipe 4063 from being blocked, resulting in poor contact between the gas and the solid hydrogen storage material.

[0040] During the installation of the solid hydrogen storage material, the ratio of hydrogen and nitrogen entering the gas storage tank 201 is controlled by different openings of the two first valves 204 on the first gas inlet pipe 202 and the second gas inlet pipe 203. After the two gases completely enter the gas storage tank 201, the first valve 204 is closed. At this time, the contents of hydrogen and nitrogen in the original gas in the gas storage tank 201 are known, and the collection tank 301 is evacuated at the same time, so that the original hydrogen content is A;

[0041] Open the second valve 207 and the third valve 304, open the first air pump 208 and the second air pump 305, drive the gas in the gas storage tank 201 to enter between the two limit plates 4061 through the first end tube 206 and the connecting tube 4063 on one side, so that the gas passes through the solid hydrogen storage material. After passing through the solid hydrogen storage material, the hydrogen in the gas is captured and collected, and the remaining gas is collected in the collection tank 301. When the gas completely enters the interior of the collection tank 301, close the third valve 304 and open the fourth valve 307, start the third air pump 308, and pass the gas in the collection tank 301 into the chromatograph to measure the contents of nitrogen and hydrogen in the remaining gas, wherein the hydrogen content is A1, and the volume of the solid hydrogen storage material for the first time is B1;

[0042] Then, the limit plate 4061 is disengaged from the clamping rod 4072, the fixing box 401 is opened, and the solid hydrogen storage material between the two limit plates 4061 is replaced with a longer solid hydrogen storage material, and the above operation is repeated. Finally, the nitrogen and hydrogen contents in the second residual gas are measured, wherein the hydrogen content is A2, and the volume of the second solid hydrogen storage material is B2;

[0043] Then, the limit plate 4061 is disengaged from the clamping rod 4072, the fixed box 401 is opened, and the solid hydrogen storage material between the two limit plates 4061 is replaced with a longer solid hydrogen storage material. The above operation is repeated, and finally the nitrogen and hydrogen contents in the third residual gas are measured, wherein the hydrogen content is A3, and the volume of the second solid hydrogen storage material is B3, and A4, A5, ..., and B4, B5, ... are successively obtained, and the following data are obtained through calculation:

[0044] The hydrogen collection capacity of the solid hydrogen storage material at the first test length is (A1-A) / B1;

[0045] The hydrogen collection capacity of the solid hydrogen storage material at the second test length is (A2-A) / B2; ......;

[0047] The hydrogen collection capacity of the solid hydrogen storage material at the nth test length is (An-A) / Bn;

[0048] Therefore, it can be concluded whether the hydrogen collection capacity of the solid-state hydrogen storage material will change when the length of the solid-state hydrogen storage material is longer and the volume is larger.

Claims

1. A method for testing the performance of solid hydrogen storage materials, characterized in that: The test method is as follows: S1. Installation of solid-state hydrogen storage materials: placing the solid-state hydrogen storage materials to be tested for the first time into a material installation device (4) so ​​that during the test, gas can flow through the solid-state hydrogen storage materials; S2. Gas preparation: preparing a mixed gas of hydrogen and nitrogen by means of the gas preparation device (2), and recording the original hydrogen content; S3, ventilation: the mixed gas is introduced into the material installation device (4), and the solid hydrogen storage material captures and collects the hydrogen in the mixed gas; S4, terminal detection: the remaining mixed gas enters the tail end collection device (3), the hydrogen content in the remaining gas is detected, the amount of hydrogen collected is obtained, and the first unit volume of hydrogen collection is obtained through the volume of the solid hydrogen storage material; S5. Repeat the test and comparison: Repeat the above operation to obtain the hydrogen collection capacity per unit volume of multiple groups of solid-state hydrogen storage materials with different lengths. Through multiple groups of hydrogen collection capacity per unit volume data, it can be determined whether the hydrogen collection capacity of the solid-state hydrogen storage material will change when the length of the solid-state hydrogen storage material is longer and the volume is larger.

2. A solid-state hydrogen storage material performance testing device according to claim 1, comprising a gas preparation device (2), a tail end collection device (3) and a material installation device (4), characterized in that: The gas preparation device (2) comprises a gas storage tank (201), a first gas inlet pipe (202) is installed on one side of the gas storage tank (201), one end of the first gas inlet pipe (202) is connected to a hydrogen gas source, a second gas inlet pipe (203) is installed on one side of the gas storage tank (201), one end of the second gas inlet pipe (203) is connected to a nitrogen gas source, a first valve (204) is installed on the first gas inlet pipe (202) and the second gas inlet pipe (203), a first connecting pipe (205) is installed on the other side of the gas storage tank (201), a first end pipe (206) is installed on the end of the first connecting pipe (205) away from the gas storage tank (201), a second valve (207) is installed on the first connecting pipe (205), and a first air pump (208) is installed on the first connecting pipe (205).

3. A solid-state hydrogen storage material performance testing device according to claim 1, characterized in that: The tail end collection device (3) comprises a collection tank (301); a second connecting pipe (302) is installed on a side of the collection tank (301) close to the gas storage tank (201); a second end pipe (303) is installed on an end of the second connecting pipe (302) away from the collection tank (301); a third valve (304) is installed on the second connecting pipe (302); a second air pump (305) is installed on the second connecting pipe (302); an exhaust pipe (306) is installed on a side of the collection tank (301) away from the gas storage tank (201); a chromatographic spectrometer is connected to an end of the exhaust pipe (306) away from the collection tank (301); a fourth valve (307) is installed on the exhaust pipe (306); a third air pump (308) is installed on the exhaust pipe (306); and the material installation device (4) is arranged between the first end pipe (206) and the second end pipe (303).

4. A solid-state hydrogen storage material performance testing device according to claim 3, characterized in that: The material installation device (4) comprises a fixed box (401) arranged between a first end tube (206) and a second end tube (303); the gas storage tank (201), the collecting tank (301) and the bottom support legs of the fixed box (401) are all fixedly installed on a base (1); the base (1) is fixedly installed on the ground; a lower placement cavity is provided inside the fixed box (401); a top cover (402) is provided above the fixed box (401); an upper placement cavity is provided inside the top cover (402); when the top cover (402) is installed on the fixed box (401), After the top is reached, the lower placement cavity and the upper placement cavity are combined to form a placement cavity, which is used to place solid hydrogen storage materials. Positioning grooves (403) are evenly arranged on the top wall of the fixed box (401), and positioning blocks (404) are evenly installed on the bottom wall of the top cover (402). When the top cover (402) is installed on the top of the fixed box (401), the positioning blocks (404) are inserted into the inside of the positioning grooves (403), and a material limiting assembly (406) is installed inside the lower placement cavity of the fixed box (401), and a handle (405) is symmetrically installed on the top of the top cover (402).

5. A solid hydrogen storage material performance testing device according to claim 4, characterized in that: The material limiting assembly (406) comprises two limiting plates (4061) symmetrically arranged in the lower placement cavity. When the top cover (402) is installed on the top of the fixed box (401), the outer wall of the limiting plate (4061) is in close contact with the inner wall of the placement cavity. The two limiting plates (4061) are used to limit the solid hydrogen storage materials of different lengths. Pressure sensors (4065) are installed on the sides of the two limiting plates (4061) close to each other. The pressure sensors (4065) are used to locate the position of the limiting plates (4061). An installation clamping assembly (407) is installed between the limiting plates (4061) and the top cover (402).

6. A solid hydrogen storage material performance testing device according to claim 5, characterized in that: The fixed box (401) is symmetrically provided with first end grooves (4062) at both ends, and a connecting pipe (4063) is installed on the side away from each other of the two limiting plates (4061), one end of the connecting pipe (4063) passes through the first end groove (4062) to the outside of the top cover (402), and a sealing ring (4064) is installed on the end of the connecting pipe (4063) away from the limiting plate (4061). The two connecting pipes (4063) are movably installed inside the first end pipe (206) and the second end pipe (303), respectively, and the outer walls of the sealing rings (4064) at the ends of the two connecting pipes (4063) are tightly attached to the inner wall of the first end pipe (206) and the inner wall of the second end pipe (303), respectively, and the inner cavity of the connecting pipe (4063) is connected to the side of the limiting plate (4061) close to the solid hydrogen storage material.

7. A solid hydrogen storage material performance testing device according to claim 6, characterized in that: A sliding frame (4066) is installed at the bottom end of the fixed box (401), and two sliding blocks (4067) are symmetrically slidably installed inside the sliding frame (4066), and a connecting frame (4068) is installed on the side away from each other of the two sliding blocks (4067), and the two connecting frames (4068) are respectively fixedly connected to the two connecting pipes (4063), and a double-headed screw (4069) is rotatably installed inside the sliding frame (4066), and the two sliding blocks (4067) are respectively threadedly connected to two thread grooves on the double-headed screw (4069) with opposite directions, and one end of the double-headed screw (4069) is fixedly connected to the output shaft of the motor (40610), and the motor (40610) is fixedly installed on one end of the sliding frame (4066).

8. A solid hydrogen storage material performance testing device according to claim 5, characterized in that: The mounting clamping assembly (407) comprises a second end groove (4071) symmetrically opened at both ends of the top cover (402); a clamping rod (4072) is movably installed inside the second end groove (4071); one end of the clamping rod (4072) is connected to the limit plate (4061); scales (4073) are symmetrically installed at both ends of the top cover (402); an indicator block (4074) is fixedly installed on the clamping rod (4072); the indicator block (4074) is slidably installed inside the scale (4073); the scale (4073) guides the clamping rod (4072) on the one hand, and measures the length of the solid hydrogen storage material on the other hand.

9. A solid hydrogen storage material performance testing device according to claim 8, characterized in that: A slot (4075) is provided on one side of the limit plate (4061) close to the clamping rod (4072), one end of the clamping rod (4072) is inserted into the slot (4075), a clamping slot (4076) is provided on the inner wall of the slot (4075) at an equal angle, a movable slot (4077) is provided on the inner wall of the movable slot (4077) at an equal angle, the connecting slot (4078) is provided on the inner wall of the movable slot (4077), the connecting slot (4078) corresponds to the clamping slot (4076), a clamping block (4079) is movably installed inside the connecting slot (4078), and the clamping block (4079) is provided on the inner wall of the movable slot (4077). The movable plate (40710) is movably installed in the movable groove (4077), and the movable plate (40710) is located on the side of the clamping block (4079) away from the limiting plate (4061). A connecting block (40711) is installed on the side of the movable plate (40710) close to the limiting plate (4061). Connecting rods (40712) are arranged at equal angles between the connecting block (40711) and each clamping block (4079), and the two ends of the connecting rod (40712) are respectively hinged to the clamping block (4079) and the connecting block (40711).

10. A solid hydrogen storage material performance testing device according to claim 9, characterized in that: A spring (40713) is installed on the side of the movable plate (40710) away from the limiting plate (4061), and one end of the spring (40713) is fixedly connected to the inner wall of the limiting plate (4061). A rod groove (40714) is opened on the side of the movable groove (4077) away from the limiting plate (4061), and one end of the rod groove (40714) penetrates to the end of the clamping rod (4072) away from the limiting plate (4061). A pull rod (40715) is installed on the side of the movable plate (40710) away from the limiting plate (4061), and one end of the pull rod (40715) penetrates to the outside of the clamping rod (4072).

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