Low-temperature liquid storage tank detection device for filling liquid hydrogen

Abstract

The invention belongs to the technical field of storage tank detection, and particularly discloses a low-temperature liquid storage tank detection device for filling liquid hydrogen, which comprises a base, a rotating seat is arranged on the base, a pressing and fixing assembly is arranged on the base, and a storage tank to be detected is mounted between the rotating seat and the pressing and fixing assembly. An intermittent main rotating assembly is arranged on the upper wall of the base, a detection vertical moving mechanism is arranged on the base, and the detection vertical moving mechanism comprises an intermittent transmission assembly, a vertical transmission steering assembly, an adjustable membrane type detection assembly and a ratchet wheel one-way locking assembly. By means of the characteristic that gas at the gas leakage position enables the elastic film to protrude, the to-be-detected storage tank intermittently rotates, the elastic film moves downwards by a section after the to-be-detected storage tank rotates by a circle, and then gas leakage detection of the outer wall of the to-be-detected storage tank can be automatically completed.

Description

Technical Field

[0001] The invention belongs to the technical field of storage tank detection, and specifically refers to a low-temperature liquid storage tank detection device for filling liquid hydrogen. Background Art

[0002] Liquid hydrogen is a liquid obtained by cooling hydrogen. It is a colorless, odorless, high-energy, low-temperature liquid fuel. At one atmosphere of pressure, the normal boiling point of hydrogen is 20.37 K (-252.78°C) and the freezing point is 13.96 K (-259.19°C). Liquid hydrogen has important applications in the aerospace field. As the global demand for clean energy increases, liquid hydrogen, as an efficient way to store hydrogen, is becoming increasingly important.

[0003] Generally, liquid hydrogen is stored in tanks. Due to the service life of the tanks, damage to the tanks may lead to leakage of liquid hydrogen. Therefore, the use of the tanks should be checked at any time every day. For unused tanks, the tanks are generally placed in water to test their tightness. However, for tanks filled with liquid hydrogen, they need to be carefully prevented from tipping over during storage, so underwater testing cannot be used. For larger tanks, a large amount of water is required for underwater testing. When the tanks are placed in water, a large disturbance will be caused to the water in the container. During testing, it is necessary to wait for the water in the container to be still. In addition, in order to facilitate the observation of the tightness of the tanks, the orientation of the tanks needs to be changed many times, which will also cause disturbance of the water body. The detection efficiency is low and it is easy to miss the detection.

[0004] Therefore, a detection device for a cryogenic liquid storage tank filled with liquid hydrogen is needed to solve the above problems. Summary of the invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a low-temperature liquid storage tank detection device for filling liquid hydrogen, which utilizes the characteristic that the gas at the leaking place will cause the elastic membrane to bulge. The storage tank to be tested rotates intermittently. After one rotation, the elastic membrane moves downward for a distance, and the leakage detection of the outer wall of the storage tank to be tested can be automatically completed.

[0006] The technical solution adopted by the present invention is as follows: The present invention proposes a low-temperature liquid storage tank detection device for filling liquid hydrogen, comprising a base, a rotating seat is provided on the base, a clamping and fixing assembly is provided on the base, a storage tank to be tested is installed between the rotating seat and the clamping and fixing assembly, an intermittent main rotating assembly is provided on the upper wall of the base, and a detection vertical movement mechanism is provided on the base; The detection vertical movement mechanism includes an intermittent transmission component, a vertical transmission steering component, an adjustable membrane type detection component and a ratchet one-way locking component. The intermittent transmission component is arranged on the upper wall of the base, the intermittent transmission component is transmitted through the intermittent main rotation component, the vertical transmission steering component is symmetrically arranged on the upper wall of the base, the adjustable membrane type detection component is arranged on the base and the vertical transmission steering component, and the ratchet one-way locking component is arranged on the adjustable membrane type detection component.

[0007] Furthermore, the rotating seat includes a pillar and a support, the lower end of the pillar is rotatably arranged on the upper wall of the base, the support is arranged on the upper end of the pillar, and the upper wall of the support is provided with a concave groove.

[0008] Furthermore, the intermittent main rotation component includes a motor frame, a transmission motor, a main rotation shaft, a rotating disk, a first lever, a first ratchet disk and a first ratchet rod, the motor frame is mounted on the upper wall of the base, the lower end of the main rotation shaft is rotatably disposed on the upper wall of the base, the main rotation shaft passes through the motor frame, the transmission motor is disposed on the motor frame, the transmission motor is connected to the main rotation shaft, the rotating disk is disposed on the main rotation shaft, the first lever is disposed on the rotating disk, the first ratchet disk is disposed on the pillar, and the first ratchet rod is disposed on the first ratchet disk in an array around the axial direction.

[0009] Furthermore, the intermittent transmission assembly includes a transmission shaft, a connecting shaft, a second lever, a second ratchet plate and a second ratchet rod, the lower end of the transmission shaft is arranged on the upper wall of the base, the second ratchet plate is arranged on the upper end of the transmission shaft, the second ratchet rod is arranged on the second ratchet plate in an array around the axial direction, the lower end of the connecting shaft is arranged on the upper wall of the first ratchet plate, and one end of the second lever is arranged at the upper end of the connecting shaft.

[0010] Furthermore, the adjustable membrane detection assembly includes a first vertical pole, a second vertical pole, a restoring spring, a fixed plate, a movable plate, a connecting rod, a movable sleeve, an elastic membrane, a rotating frame, a winding drum, a winding shaft and a hanging rope, wherein the first vertical pole is symmetrically arranged on the upper wall of the base, the first vertical pole is arranged on both sides of the rotating seat, the second vertical pole is symmetrically arranged on the upper wall of the base, the movable sleeve is slidably arranged on the first vertical pole, the two ends of the elastic membrane are fixed to the side walls of the two movable sleeves, the movable plate is slidably arranged on the second vertical pole, and the The movable sleeve and the movable plate are connected together by a connecting rod, the fixed plate is arranged on the upper end of the second vertical pole, the return spring is sleeved on the second vertical pole, the two ends of the return spring are respectively arranged on the fixed plate and the movable plate, the rotating frame is arranged on the upper wall of the base, the rotating frame is arranged between the first vertical pole and the second vertical pole, the winding drum is rotatably arranged on the rotating frame through the winding shaft, the two ends of the winding shaft pass through the rotating frame, one end of the lifting rope is wound around the winding drum, and the other end of the lifting rope is fixed to the connecting rod.

[0011] Furthermore, the vertical transmission steering assembly includes a transmission gear, a linkage gear, a linkage shaft, a pulley 1, a pulley 2, a transmission belt, an active bevel gear, a driven bevel gear, a clutch, a gear frame and a steering shaft, the transmission gear is arranged on the transmission shaft, the linkage shaft is symmetrically arranged on the upper wall of the base, the linkage shaft is arranged on both sides of the transmission shaft, the linkage gear is arranged on the linkage shaft, the linkage gear is meshed with the transmission gear, the pulley 1 is arranged at the upper end of the linkage shaft, the pulley 2 is arranged on the first vertical pole, the transmission belt is arranged on the pulley 1 and the pulley 2, the active bevel gear is arranged on the first vertical pole, the active bevel gear is arranged on the upper side of the pulley 1, the gear frame is arranged on the rotating frame, the steering shaft is penetrated and arranged on the gear frame, the two ends of the clutch are respectively connected with the ends of the steering shaft and the winding shaft, the driven bevel gear is arranged at the end of the steering shaft, and the active bevel gear is meshed with the driven bevel gear.

[0012] Furthermore, the ratchet one-way locking assembly includes a locking plate, a locking rod, a locking spring, a spring baffle, a mounting shaft and a mounting plate, the side wall of the rotating frame is provided with a locking slot, the locking slot is annular, the locking plate is arranged in the locking slot around the axis array, one side of the locking plate is an inclined surface, the mounting shaft is arranged on the end face of the winding shaft, the mounting shaft is coaxial with the winding shaft, one end of the mounting plate is arranged on the end of the mounting shaft, the locking rod passes through the other end of the mounting plate, the spring baffle is arranged on the outer end of the locking rod, the locking spring is sleeved on the locking rod, the two ends of the locking spring are respectively arranged on the mounting plate and the spring baffle, and the inner end of the locking rod slides in the locking slot.

[0013] Furthermore, the clamping and fixing assembly includes a hydraulic lifting rod and a fixed pressure plate, the lower end of the hydraulic lifting rod is arranged on the upper wall of the base, and one end of the fixed pressure plate is rotatably arranged on the upper end of the hydraulic lifting rod.

[0014] Furthermore, a collar is rotatably provided on the outer end of the fixed pressure plate for being sleeved on the pipe opening of the storage tank to be tested.

[0015] Furthermore, the axis of the second lever coincides with the radial direction of the first ratchet disc.

[0016] The beneficial effects achieved by the present invention using the above structure are as follows: 1. The rotating disk drives the first lever to rotate. Each time the first lever rotates one circle, the first ratchet lever rotates an angle. When the first lever drives the first ratchet lever, the first ratchet lever drives the first ratchet disk to rotate, the first ratchet disk drives the support to rotate, the support drives the support to rotate, thereby driving the storage tank to be tested to rotate an angle. When there is a leak on the outer wall of the storage tank to be tested, the gas enters between the outer wall of the storage tank to be tested and the elastic membrane, and the elastic membrane at the leaking position bulges, so that the leaking position can be accurately determined; 2. When the first lever drives the last first ratchet lever to rotate, the second lever drives the second ratchet lever, the second ratchet plate and the transmission shaft to rotate, and then drives the first vertical rod to rotate through the pulley structure, and the first vertical rod drives the active bevel gear and the driven bevel gear to rotate, and then drives the steering shaft to rotate, the clutch is in a closed state, the steering shaft and the winding shaft are connected together, the steering shaft drives the winding shaft and the winding drum to wind up the lifting rope, the lifting rope pulls down the connecting rod, the connecting rod drives the movable sleeve and the movable plate to move downward, and the movable sleeve drives the elastic membrane to move a distance downward along the outer wall of the storage tank to be tested; 3. Utilizing the ratchet structure, the winding shaft drives the mounting shaft, mounting plate and locking rod to rotate. The lower end of the locking rod passes over the inclined surface of the locking plate, so that the winding drum can reel in the sling rope. When the winding shaft stops rotating, the return spring pulls the movable plate upward, and the movable plate drives the connecting rod to move upward. The connecting rod pulls the sling rope upward. When the winding shaft reverses, the lower end of the locking rod is blocked by the locking plate, and the winding shaft cannot rotate in the opposite direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of a low-temperature liquid storage tank detection device for filling liquid hydrogen proposed by the present invention; Figure 2 for Figure 1 A top view of Figure 3 It is a schematic diagram of the three-dimensional structure of the pressing and fixing assembly and the rotating seat; Figure 4 It is a three-dimensional structural schematic diagram of an intermittent main rotating component, an intermittent transmission component and an adjustable membrane detection component; Figure 5 for Figure 4 A top view of Figure 6 It is a schematic diagram of the three-dimensional structure of the adjustable membrane detection component; Figure 7 for Figure 1 A magnified view of part A in FIG. Figure 8 for Figure 6 Enlarged view of part B in FIG.

[0018] Among them, 1. base, 2. rotating seat, 3. clamping and fixing assembly, 4. storage tank to be tested, 5. intermittent main rotating assembly, 6. detection vertical moving mechanism, 7. intermittent transmission assembly, 8. vertical transmission steering assembly, 9. adjustable membrane detection assembly, 10. ratchet one-way locking assembly, 11. pillar, 12. support, 13. motor frame, 14. transmission motor, 15. main rotating shaft, 16. rotating disk, 17. first lever, 18. first ratchet disk, 19. first ratchet rod, 20. transmission shaft, 21. connecting shaft, 22. second lever, 23. second ratchet disk, 24. second ratchet rod, 25. first vertical rod, 26. second vertical rod, 27. return spring, 28. , fixed plate, 29, movable plate, 30, connecting rod, 31, movable sleeve, 32, elastic membrane, 33, rotating frame, 34, winding drum, 35, winding shaft, 36, lifting rope, 37, transmission gear, 38, linkage gear, 39, linkage shaft, 40, pulley one, 41, pulley two, 42, transmission belt, 43, active bevel gear, 44, driven bevel gear, 45, clutch, 46, steering shaft, 47, locking plate, 48, locking rod, 49, locking spring, 50, spring baffle, 51, mounting shaft, 52, mounting plate, 53, locking slide groove, 54, hydraulic lifting rod, 55, fixed pressure plate, 56, collar, 57, concave groove, 58, gear frame.

[0019] 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. DETAILED DESCRIPTION

[0020] 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.

[0021] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0022] like Figure 1As shown, the present invention proposes a low-temperature liquid storage tank detection device for filling liquid hydrogen, comprising a base 1, a rotating base 2 is provided on the base 1, a pressing and fixing assembly 3 is provided on the base 1, a storage tank 4 to be tested is installed between the rotating base 2 and the pressing and fixing assembly 3, an intermittent main rotating assembly 5 is provided on the upper wall of the base 1, and a detection vertical moving mechanism 6 is provided on the base 1; The detection vertical movement mechanism 6 includes an intermittent transmission component 7, a vertical transmission steering component 8, an adjustable membrane type detection component 9 and a ratchet one-way locking component 10. The intermittent transmission component 7 is arranged on the upper wall of the base 1. The intermittent transmission component 7 is transmitted through the intermittent main rotation component 5. The vertical transmission steering component 8 is symmetrically arranged on the upper wall of the base 1. The adjustable membrane type detection component 9 is arranged on the base 1 and the vertical transmission steering component 8. The ratchet one-way locking component 10 is arranged on the adjustable membrane type detection component 9.

[0023] like Figure 1 , Figure 3 As shown, the rotating seat 2 includes a pillar 11 and a support 12 . The lower end of the pillar 11 is rotatably disposed on the upper wall of the base 1 , and the support 12 is disposed on the upper end of the pillar 11 . The upper wall of the support 12 is provided with a concave groove 57 .

[0024] like Figure 1 , Figure 4 , Figure 5 As shown, the intermittent main rotating assembly 5 includes a motor frame 13, a transmission motor 14, a main rotating shaft 15, a rotating disk 16, a first lever 17, a first ratchet disk 18 and a first ratchet rod 19, the motor frame 13 is arranged on the upper wall of the base 1, the lower end of the main rotating shaft 15 is rotatably arranged on the upper wall of the base 1, the main rotating shaft 15 passes through the motor frame 13, the transmission motor 14 is arranged on the motor frame 13, the transmission motor 14 is connected to the main rotating shaft 15, the rotating disk 16 is arranged on the main rotating shaft 15, the first lever 17 is arranged on the rotating disk 16, the first ratchet disk 18 is arranged on the pillar 11, and the first ratchet rod 19 is arranged on the first ratchet disk 18 in an array around the axial direction.

[0025] like Figure 1 , Figure 4 , Figure 5 As shown, the intermittent transmission assembly 7 includes a transmission shaft 20, a connecting shaft 21, a second lever 22, a second ratchet plate 23 and a second ratchet rod 24, the lower end of the transmission shaft 20 is arranged on the upper wall of the base 1, the second ratchet plate 23 is arranged on the upper end of the transmission shaft 20, the second ratchet rod 24 is arranged on the second ratchet plate 23 in an array around the axial direction, the lower end of the connecting shaft 21 is arranged on the upper wall of the first ratchet plate 18, and one end of the second lever 22 is arranged at the upper end of the connecting shaft 21.

[0026] like Figure 1 , Figure 2 , Figure 6 , Figure 8 As shown, the adjustable membrane detection assembly 9 includes a first vertical rod 25, a second vertical rod 26, a restoring spring 27, a fixed plate 28, a movable plate 29, a connecting rod 30, a movable sleeve 31, an elastic membrane 32, a rotating frame 33, a winding drum 34, a winding shaft 35 and a hanging rope 36, wherein the first vertical rod 25 is symmetrically arranged on the upper wall of the base 1, the first vertical rod 25 is arranged on both sides of the rotating seat 2, the second vertical rod 26 is symmetrically arranged on the upper wall of the base 1, the movable sleeve 31 is slidably arranged on the first vertical rod 25, the two ends of the elastic membrane 32 are fixed to the side walls of the two movable sleeves 31, the movable plate 29 is slidably arranged on the second vertical rod 26, and the movable The sleeve 31 and the movable plate 29 are connected together by a connecting rod 30, the fixed plate 28 is arranged on the upper end of the second vertical rod 26, the return spring 27 is sleeved on the second vertical rod 26, and the two ends of the return spring 27 are respectively arranged on the fixed plate 28 and the movable plate 29, the rotating frame 33 is arranged on the upper wall of the base 1, and the rotating frame 33 is arranged between the first vertical rod 25 and the second vertical rod 26. The winding drum 34 is rotatably arranged on the rotating frame 33 through the winding shaft 35, and the two ends of the winding shaft 35 pass through the rotating frame 33, one end of the hanging rope 36 is wound around the winding drum 34, and the other end of the hanging rope 36 is fixed to the connecting rod 30.

[0027] like Figure 1 , Figure 4 , Figure 5 , Figure 6 , Figure 8 As shown, the vertical transmission steering assembly 8 includes a transmission gear 37, a linkage gear 38, a linkage shaft 39, a pulley 40, a pulley 41, a transmission belt 42, an active bevel gear 43, a driven bevel gear 44, a clutch 45, a gear rack 58 and a steering shaft 46, wherein the transmission gear 37 is arranged on the transmission shaft 20, the linkage shaft 39 is symmetrically arranged on the upper wall of the base 1, the linkage shaft 39 is arranged on both sides of the transmission shaft 20, the linkage gear 38 is arranged on the linkage shaft 39, the linkage gear 38 is meshed with the transmission gear 37, and the pulley 40 is arranged on the linkage shaft 39, the pulley 2 41 is arranged on the first vertical pole 25, the transmission belt 42 is arranged on the pulley 1 40 and the pulley 2 41, the active bevel gear 43 is arranged on the first vertical pole 25, the active bevel gear 43 is arranged on the upper side of the pulley 1 40, the gear frame 58 is arranged on the rotating frame 33, the steering shaft 46 is penetrated and arranged on the gear frame 58, the two ends of the clutch 45 are respectively connected with the end of the steering shaft 46 and the winding shaft 35, the driven bevel gear 44 is arranged at the end of the steering shaft 46, and the active bevel gear 43 is meshed with the driven bevel gear 44.

[0028] like Figure 1 , Figure 7As shown, the ratchet one-way locking assembly 10 includes a locking plate 47, a locking rod 48, a locking spring 49, a spring baffle 50, a mounting shaft 51 and a mounting plate 52. The side wall of the rotating frame 33 is provided with a locking slot 53, and the locking slot 53 is annular. The locking plate 47 is arranged in the locking slot 53 around the axis array. One side of the locking plate 47 is an inclined surface. The mounting shaft 51 is arranged on the end surface of the winding shaft 35. The mounting shaft 51 is coaxial with the winding shaft 35. One end of the mounting plate 52 is arranged at the end of the mounting shaft 51. The locking rod 48 passes through the other end of the mounting plate 52. The spring baffle 50 is arranged at the outer end of the locking rod 48. The locking spring 49 is sleeved on the locking rod 48. The two ends of the locking spring 49 are respectively arranged on the mounting plate 52 and the spring baffle 50. The inner end of the locking rod 48 slides in the locking slot 53.

[0029] like Figure 1 , Figure 3 As shown, the clamping and fixing assembly 3 includes a hydraulic lifting rod 54 and a fixed pressure plate 55 . The lower end of the hydraulic lifting rod 54 is arranged on the upper wall of the base 1 , and one end of the fixed pressure plate 55 is rotatably arranged on the upper end of the hydraulic lifting rod 54 .

[0030] like Figure 1 , Figure 3 As shown, a collar 56 is rotatably provided on the outer end of the fixed pressing plate 55 for being sleeved on the pipe opening of the storage tank 4 to be tested.

[0031] like Figure 5 As shown, the axis of the second lever 22 coincides with the radial direction of the first ratchet disc 18 .

[0032] When in use, first use a high-pressure air pump to fill gas into the storage tank 4 to maintain a certain pressure in the storage tank 4, lift the hydraulic lifting rod 54, and the hydraulic lifting rod 54 drives the fixed pressure plate 55 to rise, so that the fixed pressure plate 55 is on the upper side of the detection vertical moving mechanism 6, and then the fixed pressure plate 55 is rotated to one side, and then the storage tank 4 to be tested is placed in the concave groove 57 of the support 12, and the fixed pressure plate 55 is rotated again so that the fixed pressure plate 55 is facing the storage tank 4 to be tested, and the hydraulic lifting rod 54 is lowered. The fixed pressure plate 55 is lowered with the hydraulic lifting rod 54, so that the collar 56 of the fixed pressure plate 55 is sleeved on the pipe mouth on the storage tank 4 to fix the storage tank 4 to be tested. At this time, the middle part of the elastic membrane 32 is tightly attached to the outer wall of the storage tank 4 to be tested, and the elastic membrane 32 is in a stretched state; Turn on the transmission motor 14, the transmission motor 14 drives the main rotating shaft 15 to rotate, the main rotating shaft 15 drives the rotating disk 16 to rotate, the rotating disk 16 drives the first lever 17 to rotate, and the first lever 17 drives the first ratchet rod 19 to rotate an angle each time it rotates one circle. When the first lever 17 drives the first ratchet rod 19, the first ratchet rod 19 drives the first ratchet disk 18 to rotate, the first ratchet disk 18 drives the support 11 to rotate, and the support 11 drives the support 12 to rotate, thereby driving the storage tank 4 to be tested to rotate an angle. When there is a leak on the outer wall of the storage tank 4 to be tested, the gas enters between the outer wall of the storage tank 4 to be tested and the elastic membrane 32, and the elastic membrane 32 at the leaking position bulges, so that the leaking position can be accurately determined. At this time, the transmission motor 14 is controlled to stop, and then the elastic membrane 32 is pulled open, the leaking position is marked, and the elastic membrane 32 is restored; When the first ratchet disc 18 rotates one circle, the detection of the outer wall of the storage tank 4 to be tested that contacts the elastic membrane 32 is completed. When the first lever 17 drives the last first ratchet rod 19 to rotate, the second lever 22 pushes the second ratchet rod 24 to rotate, the second ratchet rod 24 drives the second ratchet disc 23 to rotate, the second ratchet disc 23 drives the transmission shaft 20 to rotate, the transmission shaft 20 drives the transmission gear 37 to rotate, the transmission gear 37 drives the linkage gears 38 on both sides to rotate, the linkage gear 38 drives the linkage shaft 39 to rotate, the linkage shaft 39 drives the pulley 1 40 to rotate, through the transmission belt 42, the pulley 1 40 drives the pulley 2 41 to rotate, the pulley 2 41 drives the first vertical rod 25 to rotate, and the first vertical rod 25 drives the active bevel gear 43 to rotate The active bevel gear 43 drives the driven bevel gear 44 to rotate, the driven bevel gear 44 drives the steering shaft 46 to rotate, the clutch 45 is in a closed state, the steering shaft 46 and the winding shaft 35 are connected together, the steering shaft 46 drives the winding shaft 35 to rotate, the winding shaft 35 drives the winding drum 34 to rotate, the winding drum 34 winds up the lifting rope 36, the lifting rope 36 pulls down the connecting rod 30, the connecting rod 30 drives the movable sleeve 31 and the movable plate 29 to move downward, the movable sleeve 31 drives the elastic membrane 32 to move downward along the outer wall of the storage tank 4 to be tested for a distance, and then the second lever 22 is separated from the second ratchet rod 24, the transmission motor 14 continues to drive the main rotating shaft 15 to rotate, and the above operation is repeated until the outer wall of the storage tank 4 to be tested is completely tested; During the above process, the winding shaft 35 drives the installation shaft 51 to rotate, the installation shaft 51 drives the installation plate 52 to rotate, the installation plate 52 drives the locking rod 48 to rotate, and the lower end of the locking rod 48 passes over the inclined surface of the locking plate 47, so that the winding drum 34 can wind up the suspension rope 36. When the winding shaft 35 stops rotating, the return spring 27 pulls the movable plate 29 upward, the movable plate 29 drives the connecting rod 30 to move upward, and the connecting rod 30 pulls the suspension rope 36 upward. When the winding shaft 35 reverses, the lower end of the locking rod 48 is blocked by the locking plate 47, and the winding shaft 35 cannot rotate in the opposite direction. When the outer wall of the storage tank 4 to be tested is completely tested, the hydraulic lifting rod 54 is raised, and the hydraulic lifting rod 54 drives the fixed pressure plate 55 to move upward, and the ring 56 of the fixed pressure plate 55 is detached from the pipe mouth of the storage tank 4 to be tested. When the fixed pressure plate 55 is on the upper side of the detection vertical moving mechanism 6, the fixed pressure plate 55 is rotated to one side, and the storage tank 4 to be tested is lifted out from the support 12, and then the clutch 45 is disconnected, the winding shaft 35 and the steering shaft 46 are no longer connected together, and the spring baffle 50 is pulled outward, and the spring baffle 50 drives the locking rod 48 to move outward, and the lower end of the locking rod 48 is separated from the locking plate 47, and the restoring spring 27 pulls the movable plate 29 upward, and the movable plate 29 drives the connecting rod 30 and the movable sleeve 31 to move upward, and the movable sleeve 31 drives the elastic membrane 32 to move upward.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

[0035] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A cryogenic liquid storage tank detection device for filling liquid hydrogen, comprising a base (1), characterized in that: The base (1) is provided with a rotating base (2), the base (1) is provided with a clamping and fixing assembly (3), a storage tank (4) to be tested is installed between the rotating base (2) and the clamping and fixing assembly (3), an intermittent main rotating assembly (5) is provided on the upper wall of the base (1), and a detection vertical movement mechanism (6) is provided on the base (1); The detection vertical movement mechanism (6) comprises an intermittent transmission component (7), a vertical transmission steering component (8), an adjustable membrane detection component (9) and a ratchet one-way locking component (10); the intermittent transmission component (7) is arranged on the upper wall of the base (1); the intermittent transmission component (7) is driven by the intermittent main rotation component (5); the vertical transmission steering component (8) is symmetrically arranged on the upper wall of the base (1); the adjustable membrane detection component (9) is arranged on the base (1) and the vertical transmission steering component (8); and the ratchet one-way locking component (10) is arranged on the adjustable membrane detection component (9).

2. A cryogenic liquid storage tank detection device for filling liquid hydrogen according to claim 1, characterized in that: The rotating seat (2) comprises a pillar (11) and a support (12); the lower end of the pillar (11) is rotatably arranged on the upper wall of the base (1); the support (12) is arranged on the upper end of the pillar (11); and the upper wall of the support (12) is provided with a concave groove (57).

3. A cryogenic liquid storage tank detection device for filling liquid hydrogen according to claim 2, characterized in that: The intermittent main rotating assembly (5) comprises a motor frame (13), a transmission motor (14), a main rotating shaft (15), a rotating disk (16), a first shifting rod (17), a first ratchet disk (18) and a first ratchet rod (19), wherein the motor frame (13) is arranged on the upper wall of the base (1), the lower end of the main rotating shaft (15) is rotatably arranged on the upper wall of the base (1), the main rotating shaft (15) passes through the motor frame (13), the transmission motor (14) is arranged on the motor frame (13), the transmission motor (14) is connected to the main rotating shaft (15), the rotating disk (16) is arranged on the main rotating shaft (15), the first shifting rod (17) is arranged on the rotating disk (16), the first ratchet disk (18) is arranged on the pillar (11), and the first ratchet rod (19) is arranged on the first ratchet disk (18) in an array around the axis direction.

4. A low-temperature liquid storage tank detection device for filling liquid hydrogen according to claim 3, characterized in that: The intermittent transmission assembly (7) comprises a transmission shaft (20), a connecting shaft (21), a second shifting rod (22), a second ratchet disc (23) and a second ratchet rod (24); the lower end of the transmission shaft (20) is arranged on the upper wall of the base (1); the second ratchet disc (23) is arranged on the upper end of the transmission shaft (20); the second ratchet rod (24) is arranged on the second ratchet disc (23) in an array around an axial direction; the lower end of the connecting shaft (21) is arranged on the upper wall of the first ratchet disc (18); and one end of the second shifting rod (22) is arranged on the upper end of the connecting shaft (21).

5. A low-temperature liquid storage tank detection device for filling liquid hydrogen according to claim 4, characterized in that: The adjustable membrane detection assembly (9) comprises a first vertical pole (25), a second vertical pole (26), a restoring spring (27), a fixed plate (28), a movable plate (29), a connecting rod (30), a movable sleeve (31), an elastic membrane (32), a rotating frame (33), a winding drum (34), a winding shaft (35) and a hanging rope (36), wherein the first vertical pole (25) is symmetrically arranged on the upper wall of the base (1), the first vertical pole (25) is arranged on both sides of the rotating seat (2), the second vertical pole (26) is symmetrically arranged on the upper wall of the base (1), the movable sleeve (31) is slidably arranged on the first vertical pole (25), the two ends of the elastic membrane (32) are fixed to the side walls of the two movable sleeves (31), the movable plate (29) is slidably arranged on the second vertical pole (26), and the movable The sleeve (31) and the movable plate (29) are connected together via a connecting rod (30); the fixed plate (28) is arranged on the upper end of the second vertical rod (26); the return spring (27) is sleeved on the second vertical rod (26); two ends of the return spring (27) are respectively arranged on the fixed plate (28) and the movable plate (29); the rotating frame (33) is arranged on the upper wall of the base (1); the rotating frame (33) is arranged between the first vertical rod (25) and the second vertical rod (26); the winding drum (34) is rotatably arranged on the rotating frame (33) via a winding shaft (35); two ends of the winding shaft (35) penetrate the rotating frame (33); one end of the suspension rope (36) is wound around the winding drum (34); and the other end of the suspension rope (36) is fixed to the connecting rod (30).

6. A detection device for a cryogenic liquid storage tank filled with liquid hydrogen according to claim 5, characterized in that: The vertical transmission steering assembly (8) comprises a transmission gear (37), a linkage gear (38), a linkage shaft (39), a pulley 1 (40), a pulley 2 (41), a transmission belt (42), an active bevel gear (43), a driven bevel gear (44), a clutch (45), a gear rack (58) and a steering shaft (46), wherein the transmission gear (37) is arranged on the transmission shaft (20), the linkage shaft (39) is symmetrically arranged on the upper wall of the base (1), the linkage shaft (39) is arranged on both sides of the transmission shaft (20), the linkage gear (38) is arranged on the linkage shaft (39), the linkage gear (38) is meshed with the transmission gear (37), the pulley 1 (40) is arranged on the linkage shaft (58), and the linkage gear (38) is meshed with the transmission gear (37). The upper end of the shaft (39), the second pulley (41) is arranged on the first vertical rod (25), the transmission belt (42) is arranged on the first pulley (40) and the second pulley (41), the active bevel gear (43) is arranged on the first vertical rod (25), the active bevel gear (43) is arranged on the upper side of the first pulley (40), the gear frame (58) is arranged on the rotating frame (33), the steering shaft (46) is penetrated and arranged on the gear frame (58), the two ends of the clutch (45) are respectively connected to the ends of the steering shaft (46) and the winding shaft (35), the driven bevel gear (44) is arranged at the end of the steering shaft (46), and the active bevel gear (43) is meshed with the driven bevel gear (44).

7. A detection device for a cryogenic liquid storage tank filled with liquid hydrogen according to claim 6, characterized in that: The ratchet one-way locking assembly (10) comprises a locking plate (47), a locking rod (48), a locking spring (49), a spring baffle (50), a mounting shaft (51) and a mounting plate (52); a locking slot (53) is provided on the side wall of the rotating frame (33); the locking slot (53) is annular; the locking plate (47) is arranged in the locking slot (53) in an array around an axis; one side of the locking plate (47) is an inclined surface; the mounting shaft (51) is arranged on the end surface of the winding shaft (35); The mounting shaft (51) is coaxial with the winding shaft (35), one end of the mounting plate (52) is arranged at the end of the mounting shaft (51), the locking rod (48) passes through the other end of the mounting plate (52), the spring baffle (50) is arranged at the outer end of the locking rod (48), the locking spring (49) is sleeved on the locking rod (48), the two ends of the locking spring (49) are respectively arranged on the mounting plate (52) and the spring baffle (50), and the inner end of the locking rod (48) slides in the locking groove (53).

8. A detection device for a cryogenic liquid storage tank filled with liquid hydrogen according to claim 7, characterized in that: The clamping and fixing assembly (3) comprises a hydraulic lifting rod (54) and a fixed pressing plate (55), wherein the lower end of the hydraulic lifting rod (54) is arranged on the upper wall of the base (1), and one end of the fixed pressing plate (55) is rotatably arranged on the upper end of the hydraulic lifting rod (54).

9. A detection device for a cryogenic liquid storage tank filled with liquid hydrogen according to claim 8, characterized in that: The outer end of the fixed pressing plate (55) is rotatably provided with a collar (56) for being sleeved on the pipe opening of the storage tank (4) to be tested.

10. A detection device for a cryogenic liquid storage tank filled with liquid hydrogen according to claim 9, characterized in that: The axis of the second lever (22) coincides with the radial direction of the first ratchet disc (18).

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