High-purity hydrogen high-pressure delivery device

Abstract

The utility model relates to conveying device technical field, and disclose a kind of high-pressure conveying device of high-purity hydrogen, and realize quick dismounting by setting up quick coupling, female seat end, male end etc. structure, by twisting valve, the connection between main pipe and transition pipe is cut off, then by sliding the sliding sleeve of hydrogen storage tank one side, sliding sleeve extrusion spring A is contracted, since the extrusion of the inner ring of sliding sleeve is gone for the sphere, male end is pulled to one side together with hydrogen storage tank at this time, make male end pass through arc groove and sphere are up to the top simultaneously while sliding, make male end smoothly pull out, when male end moves out, the extrusion force of top head is not, female seat end and the top head inside male end are released due to the elasticity of spring B, quickly adhere to the opening, make transition pipe and hydrogen storage tank inside form seal, avoid gas leakage, achieved the effect of quick dismounting.

Description

Technical Field

[0001] This utility model relates to the field of conveying device technology, and in particular to a high-purity hydrogen high-pressure conveying device. Background Technology

[0002] High-purity hydrogen is hydrogen gas with a purity ≥ 99.999% (mole fraction). It is a colorless, odorless, and flammable gas at room temperature, with a liquid density of 70.96 kg / m³ (-252.8℃) and a boiling point of -252.8℃. Its molecules are composed of orthohydrogen and parahydrogen. At low temperatures, the proportion of parahydrogen increases, releasing heat of conversion. Maintaining high pressure during hydrogen transport necessitates the use of high-pressure transport devices.

[0003] Existing technologies have certain shortcomings in the transportation of liquefied hydrogen. The connection between the transportation pipeline and the hydrogen storage tank is relatively cumbersome, mostly using threaded connections. Moreover, multiple levels of sealing are required during threaded installation to achieve a sealing effect after installation. However, disassembly and installation require multiple twisting operations to complete the disassembly and installation. Furthermore, the pipeline opening is directly exposed to the air, which can easily enter the pipeline and flow into the hydrogen storage tank, affecting the purity of the hydrogen. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a high-purity hydrogen high-pressure conveying device, which has the advantages of quick assembly and disassembly and nitrogen purging of air, thus solving the problems mentioned in the background technology.

[0005] This utility model provides the following technical solution: a high-purity hydrogen high-pressure conveying device, including a hydrogen liquefaction structure and a hydrogen storage tank, wherein a conveying pipeline is movably connected between the hydrogen liquefaction structure and the hydrogen storage tank, and quick connectors are respectively snapped between both ends of the conveying pipeline and the hydrogen liquefaction structure and the hydrogen storage tank, the conveying pipeline including a main pipe, a transition pipe and a valve, the quick connector including a female end and a male end, and a nitrogen cylinder is fixedly connected to the outer ring of the middle part of the conveying pipeline.

[0006] With the above-mentioned structural design, this device, through the design and coordination of the delivery pipeline, quick connectors, and nitrogen cylinder, enables rapid connection and disconnection between the delivery pipeline and the hydrogen storage tank. Furthermore, by filling the nitrogen cylinder with nitrogen, air is prevented from mixing into the liquefied hydrogen when the delivery pipeline is connected to the hydrogen storage tank, thus ensuring the purity and safety of the hydrogen.

[0007] Preferably, a valve is fixedly connected between the main pipe and the transition pipe, a hole seat is provided on the outer ring of the top of the transition pipe, a hole communicating with the transition pipe is opened in the middle of the hole seat, a nitrogen cylinder is fixedly connected to the top of the hole seat, and the outlet of the nitrogen cylinder is located inside the hole seat.

[0008] With the above structural setup, the delivery pipeline is divided into three parts by the main pipe, transition pipe, and valves. The transition pipe can play a role in gas transfer, and the air that is about to enter the transition pipe can be quickly flushed out through the cooperation of the transition pipe and the nitrogen cylinder.

[0009] Preferably, the female end is fixedly installed at the end of the transition pipe and the main pipe, the male end is fixedly installed on the side of the hydrogen liquefaction structure and the hydrogen storage tank, the male end is slidably engaged inside the female end, a sliding sleeve is slidably installed on the outer ring of the female end, and a spring A is fixedly connected between the inside of the sliding sleeve and the outside of the female end.

[0010] With the above structural design, the quick connector achieves a snap-fit ​​connection through the female end, male end, sliding sleeve, and spring A. After alignment, the male end is locked inside the female end through a plug-in connection, thus achieving a seal.

[0011] Preferably, the outer ring of the male end is uniformly provided with an arc groove, and the inner ring of the female end is provided with a ball groove, in which a ball is movably installed, and the shape and size of the ball and the arc groove are compatible.

[0012] With the above structural design, when the ball is pressed against the inside of the arc groove, the male end is fixed inside the female end. When the ball is not pressed against the inside of the arc groove, the male end can be pulled to complete the disassembly.

[0013] Preferably, a spring seat is fixedly installed inside both the female end and the male end, and a top head is provided inside both the female end and the male end. The end of the top head is conical. When the mold is closed, the top head and the opening of the female end and the male end are sealed to each other. A spring B is fixedly installed between the outside of the top head and the spring seat.

[0014] With the above structural design, when the female and male ends are not connected, the top end will fit against the openings of the female and male ends respectively, achieving a seal and preventing air from entering.

[0015] This utility model has the following advantages: 1. This high-purity hydrogen high-pressure conveying device achieves rapid assembly and disassembly through the design of quick connectors, female connectors, and male connectors. By turning the valve, the connection between the main pipe and the transition pipe is cut off. Then, by sliding the sleeve on one side of the hydrogen storage tank, the sleeve compresses the spring A, causing it to contract. Since the ball is no longer compressed by the inner ring of the sleeve, the male connector, along with the hydrogen storage tank, is pulled to one side. As the male connector slides, it pushes the ball upward through the arc groove, allowing the male connector to be easily pulled out. When the male connector is removed, the top end no longer has compressive force. Due to the elastic release of spring B, the top end inside the female connector and the male connector quickly comes into contact with the opening, forming a seal between the transition pipe and the inside of the hydrogen storage tank, preventing gas leakage and achieving the effect of rapid assembly and disassembly.

[0016] 2. This high-purity hydrogen high-pressure delivery device reduces air ingress by incorporating a transition pipe, orifice, and nitrogen cylinder. Before connecting the female and male connectors, nitrogen from the cylinder is released to fill the transition pipe. Since the transition pipe is blocked by valves and the top end, nitrogen cannot leak. When connecting the female and male connectors, the nitrogen pressure inside the transition pipe is higher than the external air pressure before the connection is fully closed. This causes nitrogen to spray out from the gap between the top end and the female connector. After the female and male connectors are fully engaged, the remaining nitrogen fills the hydrogen storage tank. Because nitrogen is an inert gas, it does not affect the liquefied hydrogen, effectively preventing air ingress. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the conveying pipeline of this utility model; Figure 3 This is an exploded view of the hole seat and nitrogen cylinder structure of this utility model; Figure 4 This is a schematic diagram of the internal structure of the quick connector of this utility model; Figure 5 for Figure 2 Enlarged view of point A in the middle.

[0018] In the diagram: 1. Hydrogen liquefaction structure; 2. Hydrogen storage tank; 3. Delivery pipeline; 31. Main pipe; 32. Transition pipe; 33. Valve; 34. Orifice seat; 4. Quick coupling; 41. Female end; 42. Male end; 43. Sliding sleeve; 44. Spring A; 45. Arc groove; 46. Sphere; 47. Spring seat; 48. Top head; 49. Spring B; 5. Nitrogen cylinder. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1-3 A high-purity hydrogen high-pressure conveying device includes a hydrogen liquefaction structure 1 and a hydrogen storage tank 2. A conveying pipe 3 is movably connected between the hydrogen liquefaction structure 1 and the hydrogen storage tank 2. Quick connectors 4 are snapped between the two ends of the conveying pipe 3 and the hydrogen liquefaction structure 1 and the hydrogen storage tank 2, respectively. The quick connector 4 includes a female end 41 and a male end 42. A nitrogen cylinder 5 is fixedly connected to the outer ring of the middle part of the conveying pipe 3.

[0021] In practical applications, this device, through the design and coordination of the delivery pipeline 3, quick connector 4, and nitrogen cylinder 5, enables rapid connection and disconnection between the delivery pipeline 3 and the hydrogen storage tank 2. Furthermore, the nitrogen cylinder 5, filled with nitrogen, prevents air from entering the delivery pipeline 3 when connected to the hydrogen storage tank 2, ensuring the purity and safety of the hydrogen. The one-way valves integrated into the female connector 41 and male connector 42 only open during connection and automatically close when disconnected, preventing air from entering.

[0022] Please see Figures 1-3 The conveying pipeline 3 includes a main pipe 31, a transition pipe 32, and a valve 33. The valve 33 is fixedly connected between the main pipe 31 and the transition pipe 32. The outer ring of the top of the transition pipe 32 is provided with a hole seat 34. The hole seat 34 has a hole in the middle that communicates with the transition pipe 32. A nitrogen cylinder 5 is fixedly connected to the top of the hole seat 34. The outlet of the nitrogen cylinder 5 is located inside the hole seat 34.

[0023] The conveying pipeline 3 is divided into three parts by the main pipe 31, the transition pipe 32 and the valve 33. The transition pipe 32 can play the role of gas transition. Through the cooperation of the transition pipe 32 and the nitrogen cylinder 5, the air that is about to enter the transition pipe 32 can be quickly flushed out.

[0024] Please see Figures 1-5 The female end 41 is fixedly installed at the ends of the transition pipe 32 and the main pipe 31, and the male end 42 is fixedly installed on the side of the hydrogen liquefaction structure 1 and the hydrogen storage tank 2. The male end 42 is slidably engaged inside the female end 41. A sliding sleeve 43 is slidably installed on the outer ring of the female end 41. A spring A44 is fixedly connected between the inside of the sliding sleeve 43 and the outside of the female end 41.

[0025] The quick connector 4 achieves a snap-fit ​​connection through the female end 41, male end 42, sliding sleeve 43, and spring A44. After the position is aligned, the male end 42 is locked inside the female end 41 through the plug-in connection, thus achieving a seal. When disassembling, simply slide the sliding sleeve 43 to compress the spring A44, and pull the male end 42 in the opposite direction to complete the disassembly. This shortens the disassembly and assembly time of the connection device and increases the hydrogen delivery efficiency.

[0026] Please see Figures 1-5 The male end 42 has an outer ring with a uniformly spaced arc groove 45, and the female end 41 has an inner ring with a ball groove. A ball 46 is movably installed inside the ball groove, and the shape and size of the ball 46 and the arc groove 45 are compatible.

[0027] The male end 42 and the female end 41 are locked and unlocked by the arc groove 45 and the ball 46. However, when the ball 46 is pressed against the inside of the arc groove 45, the male end 42 is fixed inside the female end 41. When the ball 46 is not pressed against the inside of the arc groove 45, the male end 42 can be pulled to complete the disassembly.

[0028] Please see Figures 1-5 Both the female end 41 and the male end 42 are fixedly installed with spring seats 47. Both the female end 41 and the male end 42 are provided with top heads 48. The end of the top head 48 is conical. When the top head 48 is closed with the opening of the female end 41 and the male end 42, they are sealed to each other. A spring B49 is fixedly installed between the outside of the top head 48 and the spring seat 47.

[0029] The design of the top head 48 and spring B49 acts as a one-way valve. When the female end 41 and male end 42 are not connected, the top head 48 will fit against the openings of the female end 41 and male end 42 respectively to achieve a seal and prevent air from entering. When the top heads 48 push against each other, a gap is created between the top head 48 and the female end 41 and male end 42, allowing hydrogen to flow smoothly.

[0030] Working principle: In use, the produced hydrogen is first introduced into the hydrogen liquefaction structure 1. The hydrogen liquefaction structure 1 converts the gaseous hydrogen into liquid hydrogen, which is then introduced into the hydrogen storage tank 2 through the delivery pipe 3 to realize the delivery of the converted hydrogen. During the delivery, the liquefied hydrogen flows into the delivery pipe 3 through the side port of the hydrogen liquefaction structure 1. The liquefied hydrogen then enters the hydrogen storage tank 2 through the main pipe 31, valve 33, and transition pipe 32. The hydrogen storage tank 2 completes the storage of liquefied hydrogen, and the delivery pipe 3 serves as the main delivery pipe. When the internal hydrogen storage capacity of hydrogen storage tank 2 reaches a certain level, it needs to be replaced to ensure uninterrupted delivery of liquefied hydrogen. First, by turning valve 33, the connection between main pipe 31 and transition pipe 32 is cut off. Then, by sliding the sliding sleeve 43 on one side of hydrogen storage tank 2, the sliding sleeve 43 compresses the spring A44 and contracts. Since the ball 46 is no longer compressed by the inner ring of the sliding sleeve 43, the male end 42, together with the hydrogen storage tank 2, is pulled to one side. While sliding, the male end 42 pushes the ball 46 upward through the arc groove 45, allowing the male end 42 to be pulled out smoothly. When the male end 42 is removed, the top head 48 is no longer compressed. Due to the elastic release of spring B49, the female end 41 and the top head 48 inside the male end 42 quickly come into contact with the opening, forming a seal between the transition pipe 32 and the inside of the hydrogen storage tank 2 to prevent gas leakage. To avoid the possibility of external air entering the delivery pipe 3 or the interior of the hydrogen storage tank 2 through the connection between the female end 41 and the male end 42 when replacing the new hydrogen storage tank 2, nitrogen is released from the nitrogen cylinder 5 before connecting the female end 41 and the male end 42, so that the transition pipe 32 is filled with nitrogen. Since the two sides of the transition pipe 32 are blocked by the valve 33 and the top end 48, the nitrogen cannot leak. At this time, the female end 41 and the male end 42 are connected. Before the connection is fully closed, the pressure of the nitrogen inside the transition pipe 32 is higher than the pressure of the external air. Therefore, the nitrogen will spray out from the gap between the top end 48 and the female end 41. After the female end 41 and the male end 42 are fully engaged, the remaining nitrogen is filled into the interior of the hydrogen storage tank 2. Since nitrogen is an inert gas, it will not affect the liquefied hydrogen.

Claims

1. A high-purity hydrogen high-pressure conveying device, comprising a hydrogen liquefaction structure (1) and a hydrogen storage tank (2), characterized in that: A delivery pipe (3) is movably connected between the hydrogen liquefaction structure (1) and the hydrogen storage tank (2). Quick connectors (4) are respectively snapped between the two ends of the delivery pipe (3) and the hydrogen liquefaction structure (1) and the hydrogen storage tank (2). The delivery pipe (3) includes a main pipe (31), a transition pipe (32), and a valve (33). The quick connector (4) includes a female end (41) and a male end (42). A nitrogen cylinder (5) is fixedly connected to the outer ring of the middle part of the delivery pipe (3).

2. The high-purity hydrogen high-pressure conveying device according to claim 1, characterized in that: A valve (33) is fixedly connected between the main pipe (31) and the transition pipe (32). A hole seat (34) is provided on the outer ring of the top of the transition pipe (32). A hole communicating with the transition pipe (32) is opened in the middle of the hole seat (34). A nitrogen cylinder (5) is fixedly connected to the top of the hole seat (34). The outlet of the nitrogen cylinder (5) is located inside the hole seat (34).

3. The high-purity hydrogen high-pressure conveying device according to claim 2, characterized in that: The female end (41) is fixedly installed at the ends of the transition pipe (32) and the main pipe (31), the male end (42) is fixedly installed on the side of the hydrogen liquefaction structure (1) and the hydrogen storage tank (2), the male end (42) is slidably engaged inside the female end (41), a sliding sleeve (43) is slidably installed on the outer ring of the female end (41), and a spring A (44) is fixedly connected between the inside of the sliding sleeve (43) and the outside of the female end (41).

4. The high-purity hydrogen high-pressure conveying device according to claim 3, characterized in that: The outer ring of the male end (42) is uniformly provided with an arc groove (45), and the inner ring of the female end (41) is provided with a ball groove. A ball (46) is movably installed inside the ball groove. The shape and size of the ball (46) and the arc groove (45) are compatible.

5. A high-purity hydrogen high-pressure conveying device according to claim 4, characterized in that: Spring seats (47) are fixedly installed inside both the female end (41) and the male end (42). A top head (48) is provided inside both the female end (41) and the male end (42). The end of the top head (48) is conical. When the top head (48) is closed with the opening of the female end (41) and the male end (42), they are sealed to each other. A spring B (49) is fixedly installed between the outside of the top head (48) and the spring seat (47).

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