Hydrogen filling device for hydrogen station

Abstract

The utility model relates to hydrogen station equipment technical field discloses a kind of hydrogen filling equipment for hydrogen station, including air passage main part, the side wall of air passage main part is equipped with the clamping assembly for being quickly sealed with hydrogen delivery container and clamping, and the end of air passage main part away from clamping assembly is equipped with the gripping assembly for being held by operator, the utility model is operated by operator to pull handle, drive clamping convex post to rotate around fixed shaft, make auxiliary convex post enter clamping sliding slot, hydrogen connector can be moved at this time.When reverse operation handle, clamping convex post is rotated into sliding slot, the inclined plane thereof cooperates with sliding slot to generate inward pressure, push hydrogen connector to move towards clamping outer tube bottom, compress seal ring one and seal ring two, form radial and end face double seal.Clinging convex post part structure is clamped into clamping groove, realize mechanical interlock, effectively prevent joint from coming out when high pressure filling, and make the whole filling process fast and labor-saving by simple operation.

Description

Technical Field

[0001] This utility model relates to the technical field of hydrogen station equipment, specifically to a hydrogen filling device for a hydrogen station. Background Technology

[0002] Hydrogen filling equipment for hydrogen stations is a core set of equipment specifically designed to safely and efficiently fill high-pressure hydrogen (or processed low-pressure hydrogen) stored in hydrogen stations into hydrogen energy application carriers (such as hydrogen storage cylinders for hydrogen-powered vehicles and hydrogen storage tanks for hydrogen-powered forklifts). It is a key hub connecting hydrogen production / storage with end-use applications, and its design and operation must strictly comply with standards for high-pressure gas safety, explosion prevention, and leakage prevention.

[0003] Common hydrogen filling equipment for hydrogen stations typically uses threaded or flanged connections to connect hydrogen delivery containers to filling pipelines. Threaded connections are cumbersome and time-consuming, requiring operators to rotate and align them multiple times, resulting in low efficiency. Furthermore, frequent disassembly and assembly can cause thread wear, leading to decreased sealing performance and increasing the risk of high-pressure hydrogen leakage. Secondly, while flanged connections offer structural stability, their large size and weight make them inconvenient to operate, often requiring tools for tightening and hindering rapid opening and closing, failing to meet the high-efficiency, fast-paced filling demands of modern hydrogen stations. Thirdly, traditional equipment does not adequately consider heat insulation and anti-slip requirements, leading to operator fatigue from prolonged handling and slippage in low-temperature or oily environments, affecting docking accuracy and operational safety. Therefore, this art provides a hydrogen filling device for hydrogen stations to address the problems mentioned in the background. Utility Model Content

[0004] The purpose of this utility model is to provide a hydrogen filling device for hydrogen stations, which solves the problems mentioned in the background art above.

[0005] This utility model provides the following technical solution: a hydrogen filling device for a hydrogen station, including a gas duct body, wherein the upper side wall of the gas duct body is provided with a snap-fit ​​component for quick sealing and snap-fit ​​with a hydrogen delivery container, and the end of the gas duct body away from the snap-fit ​​component is provided with a gripping component for the operator to hold.

[0006] As a preferred embodiment of the above technical solution, the snap-fit ​​assembly includes an air tube, which is fixedly connected to the upper end of the outer side wall of the airway body. The end of the air tube away from the airway body is fixedly connected to a snap-fit ​​outer tube. A sealing ring is tightly connected to the inner wall of the snap-fit ​​outer tube, and a slot penetrating its inner cavity is opened at the center of the outer surface of the snap-fit ​​outer tube.

[0007] As a preferred embodiment of the above technical solution, the outer wall of the snap-fit ​​outer tube is symmetrically and fixedly connected with double protrusions, a fixed shaft is fixedly sleeved between the two double protrusions, a snap-fit ​​protrusion is rotatably sleeved on the outer side of the two fixed shafts, an auxiliary protrusion is fixedly connected to the end of the two snap-fit ​​protrusions that is close to each other, and a handle is fixedly connected to the end of the two snap-fit ​​protrusions that is away from the air tube.

[0008] As a preferred embodiment of the above technical solution, a hydrogen connector is provided inside the snap-fit ​​outer tube, a snap-fit ​​groove is provided around the outer surface of the hydrogen connector, a sealing ring is tightly connected to the inner wall of the hydrogen connector, and a snap-fit ​​sliding groove is symmetrically provided at the end of the hydrogen connector near the gas tube.

[0009] As a preferred embodiment of the above technical solution, the outer walls of the two auxiliary protrusions slide against the outer wall of the snap-fit ​​groove, and the end of the auxiliary protrusion away from the snap-fit ​​protrusion extends into the inner cavity of the snap-fit ​​outer tube.

[0010] As a preferred embodiment of the above technical solution, the gripping component includes a gripping post, which is fixedly connected to one end away from the trachea. A silicone rubber heat insulation layer is fixedly sleeved on the outer side of the gripping post, and multiple anti-slip protrusions are evenly distributed on the outer side of the silicone rubber heat insulation layer.

[0011] Compared with the prior art, the beneficial effects of this utility model are: The operator of this invention operates two handles to rotate the locking protrusion around a fixed axis, thereby moving the auxiliary protrusion into the locking groove. At this time, the hydrogen connector is movable inside the locking outer tube, and the operator can insert the interface of the hydrogen delivery container into the hydrogen connector. After insertion, the handles are operated in reverse to push the auxiliary protrusion to rotate, and the locking protrusion rotates into the locking groove of the hydrogen connector. During this process, the inclined surface of the locking protrusion and the groove generate an inward clamping force, forcing the hydrogen connector to move towards the bottom of the locking outer tube and compressing sealing ring one and sealing ring two, forming two reliable radial and end face seals. At the same time, the final position of the locking protrusion causes part of its structure to engage with the locking groove on the outer wall of the hydrogen connector, achieving mechanical interlocking and preventing the connector from accidentally dislodging during high-pressure hydrogen filling. The entire connection process is fast and labor-saving, and the multi-point mechanical locking and double sealing design ensure the airtightness and structural reliability of the connection interface under high pressure.

[0012] Based on the aforementioned beneficial effects, in this invention, during the filling operation, the operator holds the anti-slip protrusions on the outside of the silicone rubber heat insulation layer. Due to its extremely low thermal conductivity, the silicone rubber material effectively isolates the surface from the potential low temperatures caused by the throttling expansion of high-pressure hydrogen inside the gas passage or heat exchange with the environment, preventing frostbite or burns and ensuring operational comfort and safety. Simultaneously, its softness increases the fit of the grip, reducing fatigue during prolonged operation. The evenly distributed anti-slip protrusions significantly increase the friction between the glove and the grip, providing sufficient operating resistance even when the palms are sweaty or the environment inside the station is humid or slightly oily, ensuring the equipment does not slip when held. This allows the operator to precisely control the docking angle and force of the filling head, thereby ensuring the safety and stability of the high-pressure hydrogen filling process. Attached Figure Description

[0013] Figure 1 A three-dimensional structural diagram of a hydrogen filling device for a hydrogen station; Figure 2 A schematic diagram of the internal connection of a snap-fit ​​assembly for a hydrogen filling device for a hydrogen station. Figure 3 A three-dimensional disassembled schematic diagram of the snap-fit ​​assembly of a hydrogen filling device for a hydrogen station. Figure 4 This is a schematic diagram of the connection of the gripping components of a hydrogen filling device for a hydrogen station.

[0014] In the diagram: 1. Main body of the airway; 2. Snap-fit ​​assembly; 21. Air tube; 22. Snap-fit ​​outer tube; 23. Sealing ring one; 24. Groove; 25. Double protrusions; 26. Fixed shaft; 27. Clamping protrusion; 28. Auxiliary protrusion; 29. ​​Handle; 210. Hydrogen connector; 211. Clamping groove; 212. Sealing ring two; 213. Snap-fit ​​sliding groove; 3. Grip assembly; 31. Grip post; 32. Silicone rubber heat insulation layer; 33. Anti-slip protrusion. Detailed Implementation

[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0016] Please see Figure 1 As shown, this utility model provides a technical solution: a hydrogen filling device for a hydrogen station, including a gas duct body 1, a snap-fit ​​component 2 for quick sealing and snap-fitting with a hydrogen delivery container is provided on the upper side wall of the gas duct body 1, and a gripping component 3 for operation personnel to hold at the end of the gas duct body 1 away from the snap-fit ​​component 2.

[0017] As one implementation method in this embodiment, please refer to Figures 2-3As shown, the snap-fit ​​assembly 2 includes an air tube 21, which is fixedly connected to the upper part of the outer side wall of the airway body 1. The end of the air tube 21 away from the airway body 1 is fixedly connected to a snap-fit ​​outer tube 22. A sealing ring 23 is tightly connected to the inner wall of the snap-fit ​​outer tube 22. A slot 24 penetrating its inner cavity is opened at the center of the outer surface of the snap-fit ​​outer tube 22.

[0018] The air tube 21 is fixedly connected to the upper outer side of the airway body 1, serving as the main channel for air transmission. It is integrally connected to the snap-fit ​​outer tube 22 to ensure a continuous and leak-free airway. The snap-fit ​​outer tube 22 has an internal sealing ring 23 made of a special high-pressure and hydrogen-resistant material, which forms a preliminary seal at the interface to prevent hydrogen leakage. A groove 24 at the center of the outer surface of the snap-fit ​​outer tube 22 provides space for the movement of the internal structure, ensuring smooth and uninterrupted component operation.

[0019] As one implementation method in this embodiment, please refer to Figures 2-3 As shown, the outer wall of the snap-fit ​​outer tube 22 is symmetrically fixedly connected with double protrusions 25, and a fixed shaft 26 is fixedly sleeved between the two double protrusions 25. A locking protrusion 27 is rotatably sleeved on the outer side of the two fixed shafts 26. An auxiliary protrusion 28 is fixedly connected to the end of the two locking protrusions 27 that is close to each other. A handle 29 is fixedly connected to the end of the two locking protrusions 27 that is away from the trachea 21.

[0020] The outer tube 22 is symmetrically equipped with double protrusions 25, which serve as structural support points and are each fixedly mounted with a fixed shaft 26. The locking protrusion 27, which is rotatably sleeved on the outside of the fixed shaft 26, can be rotated by operating the handle 29, thereby driving the auxiliary protrusion 28 to adjust its position synchronously. Operators can quickly lock and release the locking assembly 2 by operating the handle 29, improving operational efficiency and making it suitable for frequent filling operations. When the auxiliary protrusion 28 is engaged with the locking groove 213, because the auxiliary protrusion 28 is designed to be smaller than the locking protrusion 27, the hydrogen connector 210 has a small amount of room to move, allowing rotation between the hydrogen connector 210 and the outer tube 22. This ultimately enables the assembly and disassembly of the two components. When the locking protrusion 27 is tightly engaged with the locking groove 213, the contact force between the two components firmly fixes the hydrogen connector 210 and the outer tube 22. By linking the clamping protrusion 27 and the auxiliary protrusion 28, a uniform clamping force can be provided during the clamping process, avoiding poor sealing or equipment damage caused by uneven load.

[0021] As one implementation method in this embodiment, please refer to Figures 2-3 As shown, a hydrogen connector 210 is fitted inside the snap-fit ​​outer tube 22. A snap-fit ​​groove 211 is formed around the outer surface of the hydrogen connector 210. A sealing ring 212 is tightly connected to the inner wall of the hydrogen connector 210. A snap-fit ​​sliding groove 213 is symmetrically formed at one end of the hydrogen connector 210 near the gas tube 21.

[0022] The sealing ring 212 and sealing ring 23 on the inner wall of the hydrogen connector 210 are tightly pressed together, which enhances the sealing performance at the interface and prevents high-pressure hydrogen from leaking during the filling process.

[0023] As one implementation method in this embodiment, please refer to Figures 2-3 As shown, the outer walls of the two auxiliary protrusions 28 slide against the outer wall of the snap-fit ​​groove 213, and the end of the auxiliary protrusion 28 away from the snap-fit ​​protrusion 27 extends into the inner cavity of the snap-fit ​​outer tube 22.

[0024] One end of the auxiliary protrusion 28 extends into the inner cavity of the snap-fit ​​outer tube 22, and can directly act on the hydrogen connector 210 to achieve the adjustment and fixation of its position.

[0025] As one implementation method in this embodiment, please refer to Figure 4 As shown, the grip assembly 3 includes a grip post 31, which is fixedly connected to the end away from the trachea 21. A silicone rubber heat insulation layer 32 is fixedly sleeved on the outside of the grip post 31, and multiple anti-slip protrusions 33 are evenly distributed on the outside of the silicone rubber heat insulation layer 32.

[0026] The grip post 31 is fixedly connected to the end of the airway body 1 away from the locking assembly 2, providing the operator with a stable and comfortable grip. The silicone rubber heat insulation layer 32 sleeved on its outer side has excellent heat insulation performance and flexibility, effectively blocking the effects of low or high temperatures that may occur during high-pressure hydrogen filling on the operator, while also reducing hand fatigue. Multiple anti-slip protrusions 33 are evenly distributed on the outer side of the silicone rubber layer, increasing the friction between the hand and the grip surface, preventing slippage in wet or oily environments, and further improving operational safety and control precision.

[0027] Working principle: By operating the two handles 29, the operator rotates the locking protrusion 27 around the fixed shaft 26, thereby moving the auxiliary protrusion 28 into the locking groove 213. At this time, the hydrogen connector 210 is movable within the locking outer tube 22, and the operator can insert the interface of the hydrogen delivery container into the hydrogen connector 210. After insertion, the operator reverses the operation of the handles 29, pushing the auxiliary protrusion 28 to rotate, and the locking protrusion 27 rotates into the locking groove 213 of the hydrogen connector 210. During this process, the inclined surface of the locking protrusion 27 and the groove generate an inward clamping force, forcing the hydrogen connector 210 to move towards the bottom of the locking outer tube 22 and compressing the sealing ring 1 23 and sealing ring 212, forming two reliable radial and end face seals. At the same time, the final position of the locking protrusion 27 causes part of its structure to engage with the locking groove 211 on the outer wall of the hydrogen connector 210, achieving mechanical interlocking and preventing the connector from accidentally dislodging during high-pressure hydrogen filling. The entire connection process is fast and labor-saving, and the multi-point mechanical locking and double sealing design ensure the airtightness and structural reliability of the connection interface under high pressure.

[0028] During the filling operation, the operator holds the anti-slip protrusions 33 on the outside of the silicone rubber heat insulation layer 32. Due to its extremely low thermal conductivity, the silicone rubber material effectively isolates the surface from the low temperatures that may result from the throttling and expansion of high-pressure hydrogen inside the gas passage body 1 or from heat exchange with the environment, preventing frostbite or burns and ensuring operational comfort and safety. Simultaneously, its softness increases the fit of the grip, reducing fatigue during prolonged operation. The evenly distributed anti-slip protrusions 33 significantly increase the friction between the glove and the grip, providing sufficient operating resistance even when the palms are sweaty or the environment inside the station is humid or slightly oily, ensuring the equipment does not slip when held. This allows the operator to precisely control the docking angle and force of the filling head, thereby ensuring the safety and stability of the high-pressure hydrogen filling process.

[0029] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A hydrogen filling device for a hydrogen station, characterized in that: It includes a gas passage body (1), and the upper side wall of the gas passage body (1) is provided with a snap-fit ​​assembly (2) for quick sealing and snap-fit ​​with a hydrogen delivery container. The end of the gas passage body (1) away from the snap-fit ​​assembly (2) is provided with a grip assembly (3) for the operator to hold.

2. The hydrogen filling equipment for a hydrogen station according to claim 1, characterized in that: The snap-fit ​​assembly (2) includes an air tube (21), which is fixedly connected to the upper part of the outer side wall of the airway body (1). The end of the air tube (21) away from the airway body (1) is fixedly connected to a snap-fit ​​outer tube (22). A sealing ring (23) is tightly connected to the inner wall of the snap-fit ​​outer tube (22). A slot (24) penetrating its inner cavity is opened at the center of the outer surface of the snap-fit ​​outer tube (22).

3. The hydrogen filling equipment for a hydrogen station according to claim 2, characterized in that: The outer wall of the snap-fit ​​outer tube (22) is symmetrically fixedly connected with double protrusions (25), and a fixed shaft (26) is fixedly sleeved between the two double protrusions (25). A locking protrusion (27) is rotatably sleeved on the outer side of the two fixed shafts (26). An auxiliary protrusion (28) is fixedly connected to the end of the two locking protrusions (27) that is close to each other. A handle (29) is fixedly connected to the end of the two locking protrusions (27) that is away from the air tube (21).

4. The hydrogen filling equipment for a hydrogen station according to claim 2, characterized in that: The inner side of the snap-fit ​​outer tube (22) is fitted with a hydrogen connector (210). The outer surface of the hydrogen connector (210) is surrounded by a snap-fit ​​groove (211). The inner wall of the hydrogen connector (210) is tightly connected with a sealing ring (212). The end of the hydrogen connector (210) near the gas tube (21) is symmetrically provided with snap-fit ​​sliding grooves (213).

5. A hydrogen filling device for a hydrogen station according to claim 3, characterized in that: The outer walls of the two auxiliary protrusions (28) slide against the outer wall of the snap-fit ​​groove (213), and the end of the auxiliary protrusion (28) away from the snap-fit ​​protrusion (27) extends into the inner cavity of the snap-fit ​​outer tube (22).

6. A hydrogen filling device for a hydrogen station according to claim 2, characterized in that: The grip assembly (3) includes a grip post (31), which is fixedly connected to one end away from the airway (21). A silicone rubber heat insulation layer (32) is fixedly sleeved on the outside of the grip post (31), and multiple anti-slip protrusions (33) are evenly distributed on the outside of the silicone rubber heat insulation layer (32).

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