Hydrogen storage cylinder safety detection device

Abstract

The invention discloses a hydrogen storage cylinder safety detection device, and relates to the technical field of hydrogen storage, the hydrogen storage cylinder safety detection device comprises a detection box, the detection box is fixedly arranged, a gas cylinder body is arranged in the detection box, a sealing cover is hermetically assembled at an opening part of the detection box, a safety cylinder is fixed on one side of the detection box, and the detection box is hermetically communicated with the safety cylinder; at least two detection assemblies are slidably arranged on the periphery of the gas cylinder body, a driving assembly is arranged in the detection box, the driving assembly is provided with two output ends, a first transmission assembly is arranged at the first output end of the driving assembly and used for driving the two detection assemblies to move horizontally, and a second transmission assembly is arranged at the second output end of the driving assembly. A second transmission assembly is arranged at the second output end of the driving assembly and used for driving the two detection assemblies to move in the circumferential direction.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hydrogen storage, in particular to a hydrogen storage cylinder safety detection device. BACKGROUND

[0002] The hydrogen storage cylinder safety detection device is a key technology to ensure the safe application of hydrogen energy, especially in the vehicle-mounted hydrogen storage scene, the reliability and real-time performance of the detection device are crucial.

[0003] Before the vehicle-mounted hydrogen storage equipment is produced, the strength of the hydrogen storage cylinder shell needs to be detected to prevent the hydrogen storage cylinder shell from being insufficient in strength, causing cracks in the vehicle body during driving due to external factors, hydrogen leakage and other dangerous situations.

[0004] The existing hydrogen storage cylinder shell strength detection projects are mostly divided into compression strength detection and torsion strength detection. In general, the compression strength detection is completed under a hydraulic device, and the hydrogen storage cylinder needs to be manually moved to complete the overall compression strength detection of the shell, which makes the detection degree of automation low. Moreover, the hydrogen storage cylinder needs to be transferred for torsion strength detection, which is time-consuming and laborious.

[0005] In view of the above problems, the existing equipment needs to be improved. SUMMARY

[0006] The purpose of the present application is to provide a hydrogen storage cylinder safety detection device to solve the problems raised in the background.

[0007] To achieve the above purpose, the present application provides the following technical scheme: a hydrogen storage cylinder safety detection device, comprising a detection box fixedly arranged, a cylinder body arranged in the detection box, a cover sealingly assembled at the opening of the detection box, a safety bottle fixedly arranged on one side of the detection box and sealingly communicated with the detection box, at least two detection assemblies slidingly arranged around the cylinder body, a driving assembly arranged in the detection box, the driving assembly having two output ends, a first transmission assembly arranged at the first output end of the driving assembly for driving the two detection assemblies to move horizontally, and a second transmission assembly arranged at the second output end of the driving assembly for driving the two detection assemblies to move circumferentially.

[0008] Further, as a preferred, the detection assembly comprises a guide ring movably arranged on the outer wall of the gas cylinder body, two sides of the guide ring are fixed with sealing plates, and rubber rings are arranged on the peripheral walls of the two sealing plates, and an annular tooth groove is arranged on one side of the two sealing plates close to each other, a tooth ring is rotatably arranged between the two annular tooth grooves, a plurality of clamping columns one are circumferentially fixed on the inner wall of the tooth ring, a plurality of embedding grooves are arranged on the inner circumference of the guide ring, and a pressing block is embedded in the embedding groove, the pressing block is in contact with the gas cylinder body, a sliding groove is arranged in the pressing block, a clamping column two is sealingly and slidingly arranged in the sliding groove, and the clamping column two intermittently contacts with the clamping column one.

[0009] Further, as a preferred, the clamping column two and the sliding groove are provided with hydraulic oil, the pressing block is provided with a liquid storage space, the liquid storage space is provided with an elastic liquid storage bag, the liquid storage space and the sliding groove are communicated through a communication pipe, the opening end of the elastic liquid storage bag is sealingly communicated with the communication pipe, and an electric heating type regulating valve is sealingly arranged in the communication pipe.

[0010] Further, as a preferred, the driving assembly comprises a motor and an incomplete gear, the motor is fixedly installed in the detection box, the incomplete gear is fixed on the output end of the motor, and the two sides of the incomplete gear are intermittently meshed with gear one and gear two respectively.

[0011] Further, as a preferred, the first transmission assembly comprises a lead screw one, a lead screw two and a clamping block, the lead screw one is fixed with the gear one, the lead screw two is fixed with the lead screw one, the lead screw two is rotatably arranged on the inner wall of the detection box, the screw directions of the lead screw one and the lead screw two are opposite, a guide groove is arranged on the inner wall of the detection box, the clamping block is provided with two, and the two are slidingly arranged in the guide groove, a screw sleeve is fixedly arranged in each of the two clamping blocks, the screw directions of the two screw sleeves are opposite, the two clamping blocks are threadedly connected to the lead screw one and the lead screw two through the two screw sleeves respectively, two limiting pieces are fixed on the clamping block, and the two limiting pieces are connected to the sealing plates at the two ends of the guide ring.

[0012] Further, as a preferred, the second transmission assembly comprises a rectangular key one, a rectangular key two, a planetary gear set and a transmission tooth, a avoiding groove is arranged on the symmetrical side of the guide groove in the detection box, the rectangular key one is fixed on the gear two, the rectangular key one penetrates through the avoiding groove and rotatably penetrates through the inner wall of the avoiding groove, the rectangular key two is rotatably arranged on the outer circumference of the rectangular key one, the planetary gear set is arranged on the inner wall of the avoiding groove, the rectangular key one is fixed with the sun gear of the planetary gear set, the rectangular key two is fixed with the outer gear ring of the planetary gear set, the transmission tooth is provided with two, and the two are meshed with the two tooth rings respectively, one of the transmission teeth is slidingly arranged on the rectangular key one, the other transmission tooth is slidingly arranged on the rectangular key two, and the two transmission teeth are located between the sealing plates at the two ends of the two guide rings respectively.

[0013] Further, as preferred, a pressure alarm is arranged on the safety bottle.

[0014] Compared with the prior art, the present application has the following advantages: 1. The hydrogen storage bottle safety detection device, through the cooperation of the first transmission assembly and the second transmission assembly with the two detection assemblies, can make the two detection assemblies move intermittently from the center to both sides, and then through the two detection assemblies, the automatic comprehensive compression strength detection of the gas bottle body shell can be realized.

[0015] 2. The hydrogen storage bottle safety detection device, through the cooperation of the second transmission assembly and the detection assembly, can make the two detection assemblies rotate in opposite directions, so as to realize the torsional strength detection of the gas bottle body shell and increase the detection items. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present application; Figure 2 is a schematic diagram of the internal structure of the detection box of the present application; Figure 3 is a schematic diagram of the side view cross-sectional structure of the detection assembly of the present application; Figure 4 is a schematic diagram of the Figure 3 is an enlarged schematic diagram of position A in the present application; Figure 5 is a schematic diagram of the structure of the second transmission assembly of the present application; Figure 6 is a schematic diagram of the Figure 5 is an enlarged schematic diagram of position B in the present application.

[0017] In the figure: 1, detection box; 2, gas bottle body; 3, cover; 11, safety bottle; 4, detection assembly; 5, driving assembly; 6, first transmission assembly; 7, second transmission assembly; 41, guide ring; 42, sealing plate; 43, tooth ring; 44, first clamping column; 45, pressing block; 46, second clamping column; 451, liquid storage space; 452, elastic liquid storage bag; 453, electric heating type regulating valve; 51, motor; 52, incomplete gear; 53, gear one; 54, gear two; 61, first screw; 62, second screw; 63, clamping block; 71, first rectangular key; 72, second rectangular key; 73, planetary gear; 74, transmission teeth; 11, safety bottle; 12, pressure alarm. DETAILED DESCRIPTION

[0018] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0019] Please refer to Figures 1 to 6 The present application provides a technical solution: a hydrogen storage cylinder safety detection device, comprising a detection box 1 which is fixedly arranged, a cylinder body 2 is arranged in the detection box 1, a cover 3 is sealingly assembled on the opening of the detection box 1, a safety bottle 11 is fixedly arranged on one side of the detection box 1, and the detection box 1 is sealingly communicated with the safety bottle 11, two detection assemblies 4 are slidingly arranged on the outer periphery of the cylinder body 2, a driving assembly 5 is arranged in the detection box 1, the driving assembly 5 has two output ends, a first transmission assembly 6 is arranged on the first output end of the driving assembly 5, for driving the two detection assemblies 4 to move horizontally, and a second transmission assembly 7 is arranged on the second output end of the driving assembly 5, for driving the two detection assemblies 4 to move circumferentially.

[0020] It should be explained that the cooperative action of the first transmission assembly 6 and the second transmission assembly 7 can realize the intermittent horizontal and circumferential movement of the two detection assemblies 4, so as to comprehensively detect the combined compression strength and torsional strength of the shell of the cylinder body 2.

[0021] In addition, during the detection process, if the cylinder body 2 has a crack, the hydrogen gas leaked from the cylinder body 2 will enter the safety bottle 11, so as to prevent the detection box 1 from swelling and bursting.

[0022] During the strength detection process of the cylinder body 2, the bottom of the detection box 1 and the cover 3 can limit the two ends of the cylinder body 2, so as to avoid the arbitrary movement of the cylinder body 2 in the horizontal direction.

[0023] As a preferred embodiment, the detection assembly 4 comprises a guide ring 41 which is movably arranged on the outer wall of the cylinder body 2, two sealing plates 42 are fixedly arranged on the two sides of the guide ring 41, rubber rings are arranged on the peripheral walls of the two sealing plates 42, annular tooth grooves are arranged on the side of the two sealing plates 42 which are close to each other, a tooth ring 43 is rotatably arranged between the two annular tooth grooves, a plurality of first clamping columns 44 are circumferentially fixedly arranged on the inner wall of the tooth ring 43, a plurality of embedding grooves are arranged on the inner circumference of the guide ring 41, a plurality of pressing blocks 45 are embedded in the embedding grooves, the pressing blocks 45 are in contact with the cylinder body 2, a sliding groove is arranged in the pressing block 45, a second clamping column 46 is sealingly and slidingly arranged in the sliding groove, and the second clamping column 46 intermittently contacts with the first clamping column 44.

[0024] The cross section of the clamping column 44 is triangular, and the cross section of the clamping column 46 is pentagonal.

[0025] Moreover, the space between the clamping column 46 and the inner wall of the sliding groove is filled with hydraulic oil.

[0026] In addition, the sealing plate 42 provided with the rubber ring can ensure that a certain friction force exists between the sealing plate 42 and the detection box 1.

[0027] Specifically, when the tooth ring 43 is rotated by an external force, the plurality of clamping columns 44 are synchronously rotated. When the inclined edges of the clamping column 44 and the clamping column 46 are in contact and are pressed against each other, the vertical component force of the clamping column 44 on the clamping column 46 drives the clamping column 46 to move into the sliding groove. Under the conduction of the hydraulic oil, the plurality of pressing blocks 45 can exert a pressing force on a certain annular region of the shell of the cylinder body 2, so that the shell of the cylinder body 2 can complete the compression strength detection.

[0028] As a preferred embodiment, the clamping column 46 is provided with hydraulic oil, the pressing block 45 is provided with a liquid storage space 451, the liquid storage space 451 is provided with an elastic liquid storage bag 452, the liquid storage space 451 and the sliding groove are communicated through a communication pipe, the opening end of the elastic liquid storage bag 452 is in sealed communication with the communication pipe, and the communication pipe is provided with an electric heating type regulating valve 453.

[0029] It should be explained that the electric heating type regulating valve 453 contains a built-in heating element, which can control the heating temperature through an external PC terminal, can directly heat the valve core, and can expand or reduce the thermal expansion gap of the valve core by using the principle of thermal expansion and contraction, so as to change the flow area of the valve core. Therefore, in the same time period, the smaller the expansion gap of the electric heating type regulating valve 453, the smaller the flow area, and the greater the resistance of the fluid passing through.

[0030] Specifically, during the mutual pressing process of the clamping column 44 and the clamping column 46, if the valve core of the electric heating type regulating valve 453 is controlled to be heated, the flow area of the valve core is reduced, the resistance of the hydraulic oil flow is increased, and thus the pressure value of the hydraulic oil on the pressing block 45 is increased, and the pressing force of the pressing block 45 on the cylinder body 2 is increased. Therefore, the shell of the cylinder body 2 can be subjected to compression detection under different pressure values in the present application.

[0031] It should be noted that if the electric heating type regulating valve 453 is heated to a certain threshold value, the hydraulic oil cannot flow quickly, so that the clamping column 46 cannot move quickly in a short time. Therefore, the tangential component force of the clamping column 44 on the clamping column 46 is increased and greater than the friction force between the rubber ring and the detection box 1, so that the clamping column 44 drives the clamping column 46 to synchronously rotate.

[0032] The hydraulic oil will enter the elastic liquid storage bag 452 for temporary storage after passing through the valve core of the electric heating type regulating valve 453, and then when the clamping column one 44 and the clamping column two 46 are separated, the temperature of the valve core of the electric heating type regulating valve 453 is rapidly reduced, the flow passage of the valve core is increased, the elastic liquid storage bag 452 is quickly and automatically contracted, and the hydraulic oil is re-introduced into the chute, so as to detect the pressure strength of the next annular area of the cylinder body 2.

[0033] As a preferred embodiment, the driving assembly 5 comprises a motor 51 fixedly installed in the detection box 1 and an incomplete gear 52 fixed at the output end of the motor 51, and gear one 53 and gear two 54 are intermittently engaged on both sides of the incomplete gear 52.

[0034] That is, when the motor 51 starts, it drives the incomplete gear 52 to rotate, and the incomplete gear 52 can drive the gear one 53 and the gear two 54 to rotate alternately.

[0035] As a preferred embodiment, the first transmission assembly 6 comprises a lead screw one 61, a lead screw two 62, and a clamping block 63. The lead screw one 61 is fixed with the gear one 53, the lead screw two 62 is fixed with the lead screw one 61, and the lead screw two 62 is rotatably sleeved on the inner wall of the detection box 1. The screw directions of the lead screw one 61 and the lead screw two 62 are opposite. A guide groove is formed on the inner wall of the detection box 1. Two clamping blocks 63 are slidably arranged in the guide groove. A screw sleeve is fixed in each of the two clamping blocks 63, and the screw directions of the two screw sleeves are opposite. The two clamping blocks 63 are threadedly connected to the lead screw one 61 and the lead screw two 62 through the two screw sleeves. Two limiting pieces are fixed on the clamping block 63, and the two limiting pieces are connected to the end plates 42 at both ends of the guide ring 41.

[0036] That is, when the gear one 53 rotates, it can drive the lead screw one 61 and the lead screw two 62 to rotate synchronously. Under the action of threaded transmission, the two clamping blocks 63 move towards or away from each other, and then drive the two guide rings 41 to move synchronously through the limiting pieces. Therefore, the guide ring 41 can move in an intermittent manner around the outer periphery of the cylinder body 2, and the cylinder body 2 can be comprehensively detected for pressure strength.

[0037] As a preferred embodiment, the second transmission assembly 7 comprises a rectangular key one 71, a rectangular key two 72, a planetary gear set 73 and a transmission tooth 74, the symmetric side of the guide groove in the detection box 1 is provided with a avoiding slot, the rectangular key one 71 is fixed on the gear two 54, and the rectangular key one 71 penetrates the avoiding slot and rotates through the inner wall of the avoiding slot, the rectangular key two 72 is rotationally arranged on the outer circumference of the rectangular key one 71, the planetary gear set 73 is arranged on the inner wall of the avoiding slot, the rectangular key one 71 is fixed with the sun gear of the planetary gear set 73, the rectangular key two 72 is fixed with the outer gear ring of the planetary gear set 73, the transmission tooth 74 is provided with two, which are respectively engaged with the two tooth rings 43, one of the transmission tooth 74 is slidingly arranged on the rectangular key one 71, and the other transmission tooth 74 is slidingly arranged on the rectangular key two 72, and the two transmission teeth 74 are respectively located between the two end sealing plates 42 of the two guide rings 41.

[0038] In the above, the planetary carrier of the planetary gear set 73 is fixedly arranged, which ensures that the sun gear and the outer gear ring of the planetary gear set 73 keep opposite rotation directions.

[0039] It needs to be explained that the rotation of the rectangular key one 71 will drive one transmission tooth 74 to rotate, and the rotation of the rectangular key two 72 will drive the other transmission tooth 74 to rotate, thereby being able to drive the two tooth rings 43.

[0040] In addition, the two transmission teeth 74 will move synchronously with the two end sealing plates 42 of the two guide rings 41, which ensures that the two transmission teeth 74 are always in meshing state with the two tooth rings 43.

[0041] Specifically, please refer to Figure 5 , the rotation of the gear two 54 will drive the rectangular key one 71 to rotate synchronously, the transmission tooth 74 on the rectangular key one 71 will drive one tooth ring 43 to rotate forward, and the transmission tooth 74 on the rectangular key two 72 will drive the other tooth ring 43 to rotate reversely, therefore, in combination with the above, when the electrothermal regulating valve 453 is heated to a certain threshold value, the left clamping column one 44 will drive the left clamping column two 46 to rotate forward synchronously, and the right clamping column one 44 will drive the right clamping column two 46 to rotate reversely synchronously, so that the opposite frictional forces between the two groups of multiple pressing blocks 45 and the gas cylinder body 2 can have a tendency to twist the shell of the gas cylinder body 2, thereby being able to realize the detection of the torsional strength of the shell of the gas cylinder body 2.

[0042] As a preferred embodiment, the safety bottle 11 is provided with a pressure alarm 12.

[0043] That is to say, during the detection of the strength of the shell of the gas cylinder body 2, if hydrogen leakage occurs, the pressure alarm 12 will detect that the pressure in the safety bottle 11 increases, which indicates that the gas cylinder body 2 is a defective product, thereby prompting the operator to take preventive measures.

[0044] Specifically, in the implementation, first, the gas cylinder body 2 to be detected is installed in the detection box 1, the cover 3 is closed, then the motor 51 is started, the driving assembly 5 drives the first transmission assembly 6 and the second transmission assembly 7 to move alternately, the first transmission assembly 6 can drive the two detection assemblies 4 to move intermittently from the center of the gas cylinder body 2 to both sides, in the process of stopping moving, the second transmission assembly 7 can detect the compression strength of the gas cylinder body 2 shell in different degrees, and can also detect the torsion strength of the gas cylinder body 2 shell, therefore, the application can realize automatic comprehensive compression strength detection of the gas cylinder body 2 shell, and can also increase the detection of the torsion strength detection item, and increase the detection range.

[0045] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

[0046] The terms "center", "longitudinal", "transverse", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only a simplified description for the convenience of describing the present application, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the scope of protection of the present application.

[0047] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A safety detection device for hydrogen storage cylinders, characterized in that, The device includes a detection box (1) which is fixedly installed. A gas cylinder body (2) is provided inside the detection box (1). A sealing cap (3) is installed at the opening of the detection box (1). A safety bottle (11) is fixed on one side of the detection box (1). The detection box (1) and the safety bottle (11) are in sealed communication. At least two detection components (4) are slidably provided on the outer periphery of the gas cylinder body (2). A drive component (5) is provided inside the detection box (1). The drive component (5) has two output ends. The first output end of the drive component (5) is provided with a first transmission component (6) for driving the two detection components (4) to move horizontally. The second output end of the drive component (5) is provided with a second transmission component (7) for driving the two detection components (4) to move circumferentially.

2. The hydrogen storage cylinder safety detection device according to claim 1, characterized in that: The detection component (4) includes a guide ring (41), which is movably disposed on the outer wall of the gas cylinder body (2). The guide ring (41) is fixed with sealing plates (42) on both sides, and rubber rings are provided on the peripheral walls of the two sealing plates (42). The two sealing plates (42) are provided with annular toothed grooves on one side close to each other. A toothed ring (43) rotates between the two annular toothed grooves. Multiple locking pins (44) are fixed on the inner wall of the toothed ring (43). Multiple embedding grooves are provided on the inner circumference of the guide ring (41). A pressure block (45) is embedded in the embedding groove. The pressure block (45) contacts the gas cylinder body (2). A sliding groove is provided in the pressure block (45). A locking pin (46) is provided in the sliding groove. The locking pin (46) is intermittently in contact with the locking pin (44).

3. The hydrogen storage cylinder safety detection device according to claim 2, characterized in that: Hydraulic oil is provided between the second locking post (46) and the slide groove. A liquid storage space (451) is provided in the pressure block (45). An elastic liquid storage bladder (452) is provided in the liquid storage space (451). The liquid storage space (451) and the slide groove are connected by a connecting pipe. The opening end of the elastic liquid storage bladder (452) is sealed and connected to the connecting pipe. An electric heating regulating valve (453) is sealed inside the connecting pipe.

4. The hydrogen storage cylinder safety detection device according to claim 1, characterized in that: The drive assembly (5) includes a motor (51) and an incomplete gear (52). The motor (51) is fixedly installed inside the detection box (1). The incomplete gear (52) is fixed at the output end of the motor (51). Gear 1 (53) and gear 2 (54) are intermittently meshed on both sides of the incomplete gear (52).

5. The hydrogen storage cylinder safety detection device according to claim 2, characterized in that: The first transmission assembly (6) includes a lead screw (61), a lead screw (62), and a locking block (63). The lead screw (61) is fixed to a gear (53), and the lead screw (62) is fixed to the lead screw (61). The lead screw (62) is mounted and rotatably on the inner wall of the detection box (1). The spiral directions of the lead screw (61) and the lead screw (62) are opposite. A guide groove is provided on the inner wall of the detection box (1). Two locking blocks (63) are configured and are slidably disposed in the guide grooves respectively. Each of the two locking blocks (63) is fixed with a threaded sleeve, and the spiral directions of the two threaded sleeves are opposite. The two locking blocks (63) are threadedly connected to the lead screw (61) and the lead screw (62) respectively through the two threaded sleeves. Two limiting pieces are fixed on the locking blocks (63), and the two limiting pieces are externally connected to the sealing plates (42) at both ends of the guide ring (41).

6. The safety detection device for hydrogen storage cylinders according to claim 2, characterized in that: The second transmission assembly (7) includes a rectangular key one (71), a rectangular key two (72), a planetary gear set (73), and transmission gears (74). A clearance groove is provided on the symmetrical side of the guide groove inside the detection box (1). The rectangular key one (71) is fixed on the gear two (54), and the rectangular key one (71) passes through the clearance groove and rotatably passes through the inner wall of the clearance groove. The rectangular key two (72) is rotatably disposed on the outer periphery of the rectangular key one (71). The planetary gear set (73) is disposed on the inner wall of the clearance groove. Rectangular key one (71) is fixed to the sun gear of planetary gear set (73), rectangular key two (72) is fixed to the outer gear ring of planetary gear set (73), and two transmission teeth (74) are configured to mesh with two gear rings (43) respectively. One of the transmission teeth (74) is slidably disposed on rectangular key one (71), and the other transmission tooth (74) is slidably disposed on rectangular key two (72). The two transmission teeth (74) are respectively located between the end plates (42) of the two guide rings (41).

7. The safety detection device for hydrogen storage cylinders according to claim 1, characterized in that: The safety bottle (11) is equipped with a pressure alarm (12).

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