Leak-proof filling gun for liquid hydrogen storage tank

Abstract

The utility model discloses a leakproof filling gun for a liquid hydrogen storage tank, and relates to the technical field of hydrogenation guns. The hydrogenation gun comprises a hydrogenation gun body, a handle is fixedly arranged on an opening and closing knob of the hydrogenation gun body, a positioning assembly is arranged at a gun handle of the hydrogenation gun body, a cleaning assembly is arranged on the outer side of the hydrogenation gun body, the positioning assembly comprises a fixing block, and the fixing block is fixedly installed on the outer side of the hydrogenation gun body. The handle is clamped into the positioning groove, the positioning block is driven to reset through the elastic force of the first spring, and the handle is limited by the positioning block, so that the situation that the switch is not tightly closed due to mistaken touch can be avoided, and the purpose of positioning protection is achieved; by moving the supporting rod, the supporting rod rotates on the sliding block along the circumference through the sliding groove, the supporting rod drives the cleaning sponge to clean the gun head of the hydrogenation gun body, in this way, it can be avoided that condensate water of the gun head of the hydrogenation gun body enters the interior to cause damage, and therefore the purposes of cleaning and protection are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen filling guns, in particular to a leakage-proof filling gun for a liquid hydrogen storage tank. Background Technique

[0002] A liquid hydrogen storage tank is a cryogenic container for storing liquid hydrogen. Generally, it consists of an inner tank, an outer shell, a heat insulation structure, mechanical components for connection, measuring instruments, safety facilities, liquid and gas injection and discharge pipes, accessories, etc. A hydrogen filling gun is required to add liquid hydrogen into the liquid hydrogen storage tank;

[0003] Most of the existing hydrogen filling gun knob switches are not provided with a positioning structure, which leads to the situation that the switch is easily misoperated and not tightly closed. Content of the Utility Model

[0004] In order to solve the problem that the switch is easily misoperated and not tightly closed; the purpose of the utility model is to provide a leakage-proof filling gun for a liquid hydrogen storage tank.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme: A leakage-proof filling gun for a liquid hydrogen storage tank, including a hydrogen filling gun body, a handle is fixedly arranged on the opening and closing knob of the hydrogen filling gun body, a positioning component is arranged at the handle of the hydrogen filling gun body, and a cleaning component is arranged on the outer side of the hydrogen filling gun body; the positioning component includes a fixed block, the fixed block is fixedly installed on the outer side of the hydrogen filling gun body, a positioning groove is opened at the top end of the fixed block, the handle is movably clamped in the positioning groove, a groove is opened on the inner wall of the positioning groove, a positioning block is movably inserted into the groove, one side of the positioning block is attached to the handle, a first spring is fixedly arranged on the inner wall of the groove, one end of the first spring is fixedly connected to the bottom end of the positioning block. By inserting the handle into the positioning groove, and at the same time, through the extrusion force of the handle on the inclined surface of the positioning block, the positioning block is moved into the groove, and the first spring drives the positioning block to reset, so that the positioning block limits the handle, which can avoid the situation that the switch is not tightly closed due to misoperation. A through groove is opened on the outer side of the fixed block, a push plate is slidably clamped in the through groove, one end of the push plate is fixedly connected to the bottom of the positioning block, and the positioning block can be conveniently moved by moving the push plate in the through groove. A fixed rod is fixedly arranged in the groove, and one end of the fixed rod movably penetrates through the positioning block to keep the movement of the positioning block stable. An anti-slip sleeve is fixedly arranged at one end of the handle, and the anti-slip performance of the handle can be improved through the anti-slip sleeve.

[0006] Preferably, the cleaning component includes a telescopic rod and a support rod. The telescopic rod is fixedly installed on the gun head of the hydrogen filling gun body. A chute is provided on one side of the support rod close to the telescopic rod. A slider is slidably clamped inside the chute. The telescopic end of the telescopic rod is fixedly connected to one side of the slider. Cleaning sponges are fixedly arranged on the inner side of the support rod in an annular array. One side of the cleaning sponges is attached to the outer side of the gun head of the hydrogen filling gun body. An arc-shaped rod is fixedly arranged inside the chute. One end of the arc-shaped rod movably penetrates through the slider to keep the support rod rotating stably. A second spring is movably sleeved on the outer side of the arc-shaped rod. Two ends of the second spring are respectively fixedly connected to the inside of the chute and one side of the slider. The second spring can drive the support rod to reset. Due to the elastic force of the second spring, the support rod can be driven to reset. The support rod is of a semi-circular structure, which can facilitate the cleaning of the gun head.

[0007] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0008] 1. By clamping the handle into the positioning groove and then driving the positioning block to reset by the elastic force of the first spring, the positioning block limits the handle, which can avoid the situation that the switch is not tightly closed due to accidental touch, thus achieving the purpose of positioning protection;

[0009] 2. By moving the support rod, the support rod rotates along the circumference on the slider through the chute, and the support rod drives the cleaning sponges to clean the gun head of the hydrogen filling gun body, which can avoid the damage caused by the condensate water of the gun head of the hydrogen filling gun body entering the interior, thus achieving the purpose of cleaning protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0011] Figure 1 It is a schematic structural diagram of the present utility model.

[0012] Figure 2 It is a schematic structural diagram of the positioning component of the present utility model.

[0013] Figure 3 It is a schematic structural diagram of the cleaning component of the present utility model.

[0014] In the figure: 1. Hydrogen filling gun body; 2. Positioning component; 21. Fixed block; 22. Positioning groove; 23. Groove; 24. Positioning block; 25. First spring; 26. Through groove; 27. Push plate; 28. Fixed rod; 3. Handle; 4. Cleaning component; 41. Telescopic rod; 42. Support rod; 43. Slide groove; 44. Slide block; 45. Second; 46. Cleaning sponge; 47. Arc rod; 5. Anti-slip sleeve. Detailed implementation manners

[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a 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 those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0016] Embodiment: As Figures 1 - 3 shown, the present invention provides a leak-proof filling gun for a liquid hydrogen storage tank, including a hydrogen filling gun body 1. A handle 3 is fixedly provided on the opening and closing knob of the hydrogen filling gun body 1. A positioning component 2 is arranged at the handle of the hydrogen filling gun body 1, and a cleaning component 4 is arranged on the outer side of the hydrogen filling gun body 1. The positioning component 2 includes a fixed block 21. The fixed block 21 is fixedly installed on the outer side of the hydrogen filling gun body 1. A positioning groove 22 is opened at the top end of the fixed block 21. The handle 3 is movably clamped in the positioning groove 22. A groove 23 is opened on the inner wall of the positioning groove 22. A positioning block 24 is movably inserted into the inside of the groove 23. One side of the positioning block 24 is attached to the handle 3. A first spring 25 is fixedly arranged on the inner wall of the groove 23. One end of the first spring 25 is fixedly connected to the bottom end of the positioning block 24. By inserting the handle 3 into the positioning groove 22, and at the same time, through the extrusion force of the handle 3 on the inclined surface of the positioning block 24, the positioning block 24 is moved into the groove 23. The first spring 25 drives the positioning block 24 to reset through its elastic force, so that the positioning block 24 limits the handle 3, which can avoid the situation that the switch is not tightly closed due to accidental touch. A through groove 26 is opened on the outer side of the fixed block 21. A push plate 27 is slidably clamped in the inside of the through groove 26. One end of the push plate 27 is fixedly connected to the bottom of the positioning block 24. By moving the push plate 27 in the through groove 26, it is convenient to move the positioning block 24. A fixed rod 28 is fixedly arranged in the inside of the groove 23. One end of the fixed rod 28 movably penetrates through the positioning block 24. The fixed rod 28 keeps the movement of the positioning block 24 stable. An anti-slip sleeve 5 is fixedly arranged at one end of the handle 3. The anti-slip sleeve 5 can improve the anti-slip property of the handle 3.

[0017] The cleaning component 4 includes a telescopic rod 41 and a support rod 42. The telescopic rod 41 is fixedly installed on the gun head of the hydrogen filling gun body 1. A chute 43 is provided on one side of the support rod 42 close to the telescopic rod 41. A slider 44 is slidably clamped inside the chute 43. The telescopic end of the telescopic rod 41 is fixedly connected to one side of the slider 44. A cleaning sponge 46 distributed in an annular array is fixedly provided inside the support rod 42. One side of the cleaning sponge 46 is attached to the outer side of the gun head of the hydrogen filling gun body 1. By moving the support rod 42, the support rod 42 rotates along a circumference on the slider 44 through the chute 43, so that the support rod 42 drives the cleaning sponge 46 to clean the gun head of the hydrogen filling gun body 1, and the position of the support rod 42 is adjusted by the telescopic movement of the telescopic rod 41. This can prevent the condensate water on the gun head of the hydrogen filling gun body 1 from entering the interior and causing damage. An arc-shaped rod 47 is fixedly provided inside the chute 43. One end of the arc-shaped rod 47 movably penetrates through the slider 44. The rotation of the support rod 42 is kept stable by the arc-shaped rod 47. A second spring 45 is movably sleeved outside the arc-shaped rod 47. Both ends of the second spring 45 are fixedly connected to the inside of the chute 43 and one side of the slider 44 respectively. The support rod 42 can be driven to reset by the second spring 45. The support rod 42 is of a semi-circular structure, which can facilitate the cleaning of the gun head.

[0018] Working principle: When the hydrogen filling gun is not in use, turn off the knob switch of the hydrogen filling gun body 1, so that the handle 3 is clamped into the positioning groove 22. At the same time, through the extrusion force of the handle 3 on the inclined surface of the positioning block 24, the positioning block 24 is moved into the groove 23, and the movement of the positioning block 24 is kept stable by the fixing rod 28. The positioning block 24 compresses the first spring 25, so that the first spring 25 generates elastic force. The positioning block 24 is driven to reset by the elastic force of the first spring 25, so that the positioning block 24 limits the handle 3. This can prevent the situation that the switch is not tightly closed due to accidental touch, thus achieving the purpose of positioning protection. Subsequently, one end of the support rod 42 is moved, so that the support rod 42 rotates along a circumference on the slider 44 through the chute 43, and the rotation of the support rod 42 is kept stable by the arc-shaped rod 47. At the same time, the support rod 42 compresses the second spring 45, so that the second spring 45 generates elastic force, and the support rod 42 drives the cleaning sponge 46 to clean the gun head of the hydrogen filling gun body 1, and the position of the support rod 42 is adjusted by the telescopic movement of the telescopic rod 41. Then, the support rod 42 is driven to reset by the elastic force of the second spring 45. This can prevent the condensate water on the gun head of the hydrogen filling gun body 1 from entering the interior and causing damage, thus achieving the purpose of cleaning protection.

[0019] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

Claims

1. A leak-proof filling gun for a liquid hydrogen storage tank, comprising a hydrogen filling gun body (1), characterized in that: A handle (3) is fixedly provided on the opening and closing knob of the hydrogen filling gun body (1). A positioning component (2) is arranged at the handle of the hydrogen filling gun body (1). A cleaning component (4) is arranged outside the hydrogen filling gun body (1). The positioning component (2) includes a fixed block (21). The fixed block (21) is fixedly installed on the outside of the hydrogen filling gun body (1). A positioning groove (22) is opened at the top end of the fixed block (21). The handle (3) is movably clamped in the positioning groove (22). A groove (23) is opened on the inner wall of the positioning groove (22). A positioning block (24) is movably inserted into the groove (23). One side of the positioning block (24) is attached to the handle (3). A first spring (25) is fixedly arranged on the inner wall of the groove (23). One end of the first spring (25) is fixedly connected to the bottom end of the positioning block (24).

2. The anti-leakage filling gun for a liquid hydrogen storage tank according to claim 1, wherein The cleaning component (4) includes a telescopic rod (41) and a support rod (42). The telescopic rod (41) is fixedly installed on the gun head of the hydrogen filling gun body (1). A chute (43) is opened on one side of the support rod (42) close to the telescopic rod (41). A slider (44) is slidably clamped in the chute (43). The telescopic end of the telescopic rod (41) is fixedly connected to one side of the slider (44). A cleaning sponge (46) arranged in an annular array is fixedly arranged on the inner side of the support rod (42). One side of the cleaning sponge (46) is attached to the outside of the gun head of the hydrogen filling gun body (.) 3. The anti-leakage filling gun for a liquid hydrogen storage tank according to claim 1, wherein A through groove (26) is opened on the outside of the fixed block (21). A push plate (27) is slidably clamped in the through groove (26). One end of the push plate (27) is fixedly connected to the bottom of the positioning block (24).

4. The leak-proof filling gun for a liquid hydrogen storage tank according to claim 2, characterized in that, An arc-shaped rod (47) is fixedly arranged in the chute (43). One end of the arc-shaped rod (47) movably penetrates through the slider (44).

5. The anti-leakage filling gun for a liquid hydrogen storage tank according to claim 1, characterized in that, A fixed rod (28) is fixedly arranged in the groove (23). One end of the fixed rod (28) movably penetrates through the positioning block (24).

6. The anti-leakage filling gun for a liquid hydrogen storage tank according to claim 4, wherein, A second spring (45) is movably sleeved on the outside of the arc-shaped rod (47). Both ends of the second spring (45) are fixedly connected to the inside of the chute (43) and one side of the slider (44) respectively.

7. The leak-proof filling gun for a liquid hydrogen storage tank according to claim 1, characterized in that, An anti-slip sleeve (5) is fixedly arranged at one end of the handle (3).

8. The anti-leakage filling gun for a liquid hydrogen storage tank according to claim 2, wherein The support rod (42) is of a semi-circular structure.

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