Single acting hydrogenation unit

Abstract

This utility model discloses a single-acting hydrogenation device, comprising: a hollow valve shaft, a gas pipe connector at the bottom port of the valve shaft, and a top port of the valve shaft for connection with a hydrogenation port. A chuck is fitted onto the outer side of the valve shaft, and a limiting groove is provided on the side wall of the valve shaft. The bottom of the chuck is engaged in the limiting groove. A sleeve is fitted onto the outer side of the chuck, and the bottom of the sleeve is threadedly connected to the side wall of the valve shaft. When the sleeve is driven to rotate by external force, it can move back and forth along the valve shaft axis. When the sleeve moves forward, it can compress and tighten the front end of the chuck, causing the locking block at the front end of the chuck to move inward. After engagement, the tightening of the front end of the chuck by the sleeve causes the locking block on the front end of the chuck to engage in a locking groove on the side wall of the hydrogenation port, thus locking the top port of the valve shaft with the hydrogenation port. The single-acting hydrogenation device has a simple structure, is lightweight, and only requires rotating the sleeve to lock the valve shaft top port and the hydrogenation port together. It is easy to operate, has few sealing points, and is therefore less prone to leakage.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen refueling equipment, specifically to a single-acting hydrogen refueling device. Background Technology

[0002] Energy is one of the most important issues facing society today, and the mainstream non-renewable energy sources will eventually be depleted. Developing new energy sources will become a trend pursued by society today, and hydrogen fuel cells, which are not only a new energy source but also do not produce any pollution to the environment, will become a trend in the development of new energy.

[0003] Hydrogen refueling ports are generally used in hydrogen fuel cell vehicles. After the hydrogen refueling port is connected to the hydrogen refueling gun, high-pressure hydrogen enters the hydrogen refueling port through the hydrogen refueling gun, and then enters the hydrogen storage system of the hydrogen fuel cell vehicle.

[0004] Existing hydrogen refueling guns have complex structures, are prone to leakage, and are heavy, increasing labor intensity. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a single-acting hydrogenation device that is simple in structure, not easy to leak, lightweight and easy to operate.

[0006] To solve the above problems, the technical solution adopted by this utility model is as follows: a single-acting hydrogenation device, comprising: a hollow valve shaft, characterized in that: a gas pipe connector for connecting a gas hose is provided on the bottom port of the valve shaft, the top port of the valve shaft is used to connect with the hydrogenation port, a pawl is fitted on the outside of the valve shaft, a limiting groove is provided on the side wall of the valve shaft, the bottom of the pawl is fitted into the limiting groove, so that the limiting groove can axially limit the pawl, a sleeve is fitted on the outside of the pawl, the bottom of the sleeve is threaded to the side wall of the valve shaft, after the sleeve is driven to rotate by external force, the sleeve can move back and forth along the axial direction of the valve shaft, after the sleeve moves forward, the sleeve can squeeze and tighten the front end of the pawl, so that the locking block at the front end of the pawl can move inward, when the front end of the pawl is not tightened, the locking block on the pawl does not prevent the top port of the valve shaft from connecting with the hydrogenation port, after connection, the locking block on the front end of the pawl can be engaged into the locking groove on the side wall of the hydrogenation port by tightening the sleeve, so that the top port of the valve shaft can lock with the hydrogenation port.

[0007] Furthermore, in the aforementioned single-acting hydrogenation device, the gas pipe connector is threaded onto the bottom port of the valve shaft.

[0008] Furthermore, in the aforementioned single-acting hydrogen refueling device, a one-way valve is installed between the gas pipe connector and the bottom port of the valve shaft. The one-way valve can be opened by the high-pressure hydrogen in the gas hose without affecting the filling process. However, when the hydrogen pressure in the hydrogen refueling port is greater than the hydrogen pressure in the gas hose, the high-pressure hydrogen in the hydrogen refueling port cannot open the one-way valve in reverse, thereby preventing the hydrogen in the hydrogen refueling port from flowing back into the gas hose.

[0009] Furthermore, in the aforementioned single-acting hydrogenation device, a cap is threadedly connected to the valve shaft. When the cap is driven to rotate and move forward, it can abut against and tighten with the sleeve, thereby preventing the sleeve from moving backward.

[0010] Furthermore, in the aforementioned single-acting hydrogenation device, a hand-held portion is provided at the tail end of the valve shaft.

[0011] The advantages of this utility model are: the single-acting hydrogenation device has a simple structure and light weight. After the top port of the valve shaft is connected to the hydrogenation port, the two can be locked by simply rotating the sleeve. It is easy to operate and has few sealing joints, thus making it less prone to leakage. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the single-acting hydrogenation device of this utility model when it is not connected to the hydrogenation port.

[0013] Figure 2 This is a schematic diagram of the single-acting hydrogenation device of this utility model when connected to the hydrogenation port. Detailed Implementation

[0014] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0015] like Figure 1 , Figure 2 As shown, a single-acting hydrogenation device includes: a hollow valve shaft 1; a gas pipe connector 2 for connecting a gas hose is provided on the bottom port of the valve shaft 1; the top port of the valve shaft 1 is used to connect with a hydrogenation port 3; a pawl 4 is fitted on the outside of the valve shaft 1; a limiting groove 5 is provided on the side wall of the valve shaft 1; the bottom of the pawl 4 is fitted into the limiting groove 5, so that the limiting groove 5 can axially limit the pawl 4; a sleeve 6 is fitted on the outside of the pawl 4; the bottom of the sleeve 6 is threaded to the side wall of the valve shaft 1; and it is driven by external force. After the moving sleeve 6 rotates, the sleeve 6 can move back and forth along the valve shaft 1. After the sleeve 6 moves forward, the sleeve 6 can squeeze and tighten the front end of the chuck 4, so that the locking block 7 at the front end of the chuck 4 can move inward. When the front end of the chuck 4 is not tightened, the locking block 7 on the chuck 4 does not prevent the top port of the valve shaft 1 from being connected to the hydrogen filling port 3. After being connected, by tightening the front end of the chuck 4 by the sleeve 6, the locking block 7 on the front end of the chuck 4 can be locked into the locking groove 8 on the side wall of the hydrogen filling port 3, so that the top port of the valve shaft 1 can be locked with the hydrogen filling port 3.

[0016] In this embodiment, the gas pipe connector 2 is threaded onto the bottom port of the valve shaft 1. A one-way valve 9 is installed between the gas pipe connector 2 and the bottom port of the valve shaft 1. The one-way valve 9 can be opened by the high-pressure hydrogen in the gas hose without affecting the filling process. However, when the hydrogen pressure in the hydrogen filling port 3 is greater than the hydrogen pressure in the gas hose, the high-pressure hydrogen in the hydrogen filling port 3 cannot open the one-way valve 9 in reverse, thereby preventing the hydrogen in the hydrogen filling port 3 from flowing back into the gas hose.

[0017] A cap 10 is threaded onto the valve shaft 1. When the cap 10 is driven to rotate forward, it abuts against and tightens with the sleeve 6, thus preventing the sleeve 6 from moving backward. After the top end of the valve shaft 1 is locked with the hydrogen inlet 3, the sleeve 6 can be tightened by the cap 10. A handle 11 is provided at the tail end of the valve shaft 1. The handle 11 facilitates docking operations. One hand holds the handle 11 for docking, while the other hand drives the sleeve 6 to rotate for locking.

Claims

1. A single-acting hydrogenation unit, comprising: A hollow valve shaft is characterized by: a gas pipe connector for connecting a gas hose is provided at the bottom port of the valve shaft; the top port of the valve shaft is used to connect with a hydrogen filling port; a pawl is fitted on the outside of the valve shaft; a limiting groove is provided on the side wall of the valve shaft; the bottom of the pawl is fitted into the limiting groove, so that the limiting groove can axially limit the pawl; a sleeve is fitted on the outside of the pawl; the bottom of the sleeve is threaded to the side wall of the valve shaft; after the sleeve is driven to rotate by external force, the sleeve can move back and forth along the axial direction of the valve shaft; after the sleeve moves forward, the sleeve can squeeze and tighten the front end of the pawl, so that the locking block at the front end of the pawl can move inward; when the front end of the pawl is not tightened, the locking block on the pawl does not prevent the top port of the valve shaft from connecting with the hydrogen filling port; after connection, tightening the front end of the pawl by the sleeve can make the locking block on the front end of the pawl engage with the locking groove on the side wall of the hydrogen filling port, so that the top port of the valve shaft can lock with the hydrogen filling port.

2. The single-acting hydrogenation apparatus according to claim 1, characterized in that: The air pipe connector is threaded onto the bottom port of the valve shaft.

3. The single-acting hydrogenation apparatus according to claim 2, characterized in that: A one-way valve is installed between the gas pipe connector and the bottom port of the valve shaft. The one-way valve can be opened by the high-pressure hydrogen in the gas hose without affecting the filling. However, when the hydrogen pressure in the hydrogen filling port is greater than the hydrogen pressure in the gas hose, the high-pressure hydrogen in the hydrogen filling port cannot open the one-way valve in reverse, thus preventing the hydrogen in the hydrogen filling port from flowing back into the gas hose.

4. The single-acting hydrogenation apparatus according to claim 1, 2, or 3, characterized in that: A cap is also threaded onto the valve shaft. When the cap is driven to rotate and move forward, it can abut against and tighten with the sleeve, thereby preventing the sleeve from moving backward.

5. The single-acting hydrogenation apparatus according to claim 1, 2, or 3, characterized in that: A hand-held part is provided at the tail of the valve shaft.

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