Hydrogen filling port for high-pressure hydrogen storage bottle

Abstract

The utility model discloses a hydrogen filling port for a high-pressure hydrogen storage bottle, which comprises a hydrogen filling port cover and a hydrogen filling port connector, the inside of the hydrogen filling port connector is in threaded connection with a connecting bolt, the outside of the connecting bolt is sleeved with a fixing nut, the fixing nut is in threaded connection with the connecting bolt, and the inside of the connecting bolt is fixedly connected with a vent valve seat. A one-way valve spring is arranged in the ventilation valve seat and sleeved with a sliding plug, the sliding plug is in sliding connection with the ventilation valve seat, one end of the one-way valve spring is fixedly connected with the ventilation valve seat, and the other end of the one-way valve spring is fixedly connected with the sliding plug. A one-way valve plug is arranged in the connecting bolt and located on the upper end face of the ventilation valve seat. Belongs to the technical field of hydrogenation ports. According to the hydrogen filling port for the high-pressure hydrogen storage bottle, the filter element, the filter element cap and the filter screen are specially designed and are matched to form the filter device with the detachable filter screen, and the problem that most of filter devices in the market are integrally machined, so that the difficulty is high is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogenation ports, and more specifically to a hydrogenation port for a high-pressure hydrogen storage bottle. Background Art

[0002] Hydrogen energy has always been the focus of attention in the global energy industry, and fuel cell vehicles are one of the important areas in the application and development of hydrogen energy. As a strategically significant clean energy, many countries around the world have included it in their national strategic plans and are accelerating the commercial demonstration and application of fuel cell vehicles. The on-board hydrogen supply system is a key component of hydrogen fuel cell vehicles. During refueling, the hydrogen refueling gun generally refuels the high-pressure hydrogen storage bottle through the hydrogen refueling port, which contains functional components such as filters and one-way valves.

[0003] Most of the existing 70MPa hydrogenation port filtering devices are of integrated design and difficult to process. Therefore, we propose a hydrogenation port for a high-pressure hydrogen storage bottle. Utility Model Content

[0004] The purpose of the utility model is to provide a hydrogen filling port for a high-pressure hydrogen storage bottle to solve the problems raised in the above background technology:

[0005] Most of the existing 70MPa hydrogenation port filtering devices are of integrated design and difficult to process. Therefore, we propose a hydrogenation port for a high-pressure hydrogen storage bottle.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A hydrogen filling port for a high-pressure hydrogen storage bottle comprises a hydrogen filling port cover and a hydrogen filling port connector, wherein the hydrogen filling port connector has a gas flow channel therein, the hydrogen filling port connector is internally threadedly connected to a connecting bolt, the external sleeve of the connecting bolt is provided with a fixing nut, the hydrogen filling port connector, the connecting bolt and the fixing nut are tightly combined, the fixing nut is threadedly connected to the connecting bolt, the internal of the connecting bolt is fixedly connected to a vent valve seat, a cavity is provided inside the connecting bolt, the vent valve seat is mounted on the internal cavity platform of the connecting bolt, a one-way valve spring is provided inside the vent valve seat, the external sleeve of the one-way valve spring is provided with a sliding plug, the sliding plug is slidably connected to the vent valve seat, one end of the one-way valve spring is fixedly connected to the vent valve seat A fixed connection is provided, and the other end of the one-way valve spring is fixedly connected to the sliding plug. A one-way valve plug is provided inside the connecting bolt and on the upper end surface of the ventilation valve seat. The one-way valve plug is used in conjunction with the sliding plug. Under the elastic force of the one-way valve spring, the sliding plug is pressed against the middle through hole wall of the one-way valve plug to form a one-way valve function. A filter element is provided inside the connecting bolt and on the upper end surface of the one-way valve plug. A filter screen is provided on the outer sleeve of the filter element, and the filter screen is detachably connected to the filter element. A filter element cap is threadedly connected to the inner thread of the filter element. The filter element cap is used in conjunction with the filter screen. The filter screen is sleeved on the outer surface of the filter element, and the filter screen is fixed to the outer surface of the filter element by the filter element cap through threads.

[0008] Preferably, a connector sealing ring 1 is provided inside the hydrogenation port connector.

[0009] Preferably, a connector sealing ring 2 is arranged inside the hydrogenation port connector and below the connector sealing ring 1, and connector retaining rings are arranged on the corresponding two side edges of the connector sealing ring 2.

[0010] Preferably, a sealing gasket is sleeved on the outside of the filter element and located on the upper end surface of the connecting bolt to ensure the sealing between the connecting bolt and the hydrogenation port connector.

[0011] Preferably, an interface sealing ring is provided on the lower end surface of the connecting bolt to ensure the airtightness between the connecting bolt and the rear end pipeline.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1) When the hydrogen filling port of the high-pressure hydrogen storage bottle is in use, the hydrogen filling port is specially designed with a filter element, a filter element cap, and a filter screen, which are combined to form a filter device with a detachable filter screen, thereby solving the problem of high difficulty in integrated processing of most filter devices on the market.

[0014] 2) When the hydrogen filling port of the high-pressure hydrogen storage bottle is in use, the hydrogen filling port cooperates with the one-way valve plug, the vent valve seat, the sliding plug, and the one-way valve spring to form a one-way valve function to prevent hydrogen backflow. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic cross-sectional view of the whole of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the hydrogenation port cover of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the hydrogenation port connector of the utility model;

[0019] Figure 5 It is a cross-sectional schematic diagram of the hydrogenation port connector of the utility model;

[0020] Figure 6 It is a structural schematic diagram of the filter element of the utility model;

[0021] Figure 7 It is a cross-sectional schematic diagram of the filter element of the utility model;

[0022] Figure 8 It is a structural schematic diagram of the filter element cap of the utility model;

[0023] Fig. 9 It is a structural schematic diagram of the filter screen of the utility model;

[0024] Fig.10 It is a structural schematic diagram of the one-way valve plug of the utility model;

[0025] Fig.11 It is a cross-sectional schematic diagram of the one-way valve plug of the utility model;

[0026] Fig.12 It is a structural schematic diagram of the connecting bolt of the utility model;

[0027] Fig.13 It is a cross-sectional schematic diagram of the connecting bolt of the utility model;

[0028] Fig.14 It is a structural schematic diagram of the fixing nut of the utility model;

[0029] Fig.15 It is a cross-sectional schematic diagram of the fixing nut of the utility model;

[0030] Fig.16 It is a structural schematic diagram of the ventilation valve seat of the utility model;

[0031] Fig.17 It is a cross-sectional schematic diagram of the sliding plug of the utility model;

[0032] Fig.18 It is a structural schematic diagram of the sliding plug of the utility model.

[0033] Explanation of the numbers in the figure: 1. Hydrogen filling port cover; 2. Hydrogen filling port connector; 3. Connector seal ring 1; 4. Connector seal ring 2; 5. Connector retaining ring; 6. Filter element; 7. Filter element cap; 8. Filter screen; 9. Sealing gasket; 10. Check valve plug; 11. Connecting bolt; 12. Fixing nut; 13. Vent valve seat; 14. Sliding plug; 15. Check valve spring; 16. Interface seal ring. DETAILED DESCRIPTION

[0034] Some existing 70MPa hydrogenation port filtering devices are mostly integrated designs, which are difficult to process. Therefore, we propose a hydrogenation port for a high-pressure hydrogen storage bottle to solve this problem through the following solution.

[0035] See also Figures 1 to 18 A hydrogenation port for a high-pressure hydrogen storage bottle. The hydrogenation port for a high-pressure hydrogen storage bottle is mainly suitable for a high pressure of 70MPa. It includes a hydrogenation port cover 1 and a hydrogenation port connector 2. The hydrogenation port cover 1 prevents foreign matter from entering the hydrogenation port connector 2. The hydrogenation port connector 2 has a gas flow channel therein. The internal thread of the hydrogenation port connector 2 is connected with a connecting bolt 11. The external sleeve of the connecting bolt 11 is provided with a fixing nut 12. The hydrogenation port connector 2, the connecting bolt 11, and the fixing nut 12 are tightly combined. The fixing nut 12 is threadedly connected to the connecting bolt 11. The internal of the connecting bolt 11 is fixedly connected with a vent valve seat 13. A cavity is provided inside the connecting bolt 11. The vent valve seat 13 is installed on the internal cavity platform of the connecting bolt 11. A one-way valve spring 15 is provided inside the vent valve seat 13. The external sleeve of the one-way valve spring 15 is provided with a sliding plug 14. The sliding plug 14 is connected to the vent valve The seat 13 is slidably connected, one end of the one-way valve spring 15 is fixedly connected to the ventilation valve seat 13, and the other end of the one-way valve spring 15 is fixedly connected to the sliding plug 14. A one-way valve plug 10 is arranged inside the connecting bolt 11 and on the upper end surface of the ventilation valve seat 13. The one-way valve plug 10 and the sliding plug 14 are used in conjunction with each other. Under the elastic force of the one-way valve spring 15, the sliding plug 14 presses against the middle through hole wall of the one-way valve plug 10 to form a one-way valve function. A filter element 6 is arranged inside the connecting bolt 11 and on the upper end surface of the one-way valve plug 10. A filter screen 8 is arranged on the outer sleeve of the filter element 6. The filter screen 8 is detachably connected to the filter element 6. A filter element cap 7 is connected to the inner thread of the filter element 6. The filter element cap 7 is used in conjunction with the filter screen 8. The filter screen 8 is sleeved on the outer surface of the filter element 6, and the filter screen 8 is fixed to the outer surface of the filter element 6 by the filter element cap 7 through threads.

[0036] Furthermore, a connector sealing ring 3 is provided inside the hydrogenation port connector 2.

[0037] Furthermore, a connector sealing ring 2 4 is provided inside the hydrogenation port connector 2 and below the connector sealing ring 1 3 , and connector retaining rings 5 ​​are provided on both corresponding sides of the connector sealing ring 2 4 .

[0038] Furthermore, a sealing gasket 9 is sleeved on the outside of the filter element 6 and on the upper end surface of the connecting bolt 11 to ensure the sealing between the connecting bolt 11 and the hydrogenation port connector 2.

[0039] Furthermore, an interface sealing ring 16 is provided on the lower end surface of the connecting bolt 11 to ensure the sealing between the connecting bolt 11 and the rear end pipeline.

[0040] The use steps of the utility model are as follows: when the hydrogen filling port of the high-pressure hydrogen storage bottle is in use and hydrogen is added, the hydrogen reaches the filter screen 8 through the channel of the hydrogen filling port connector 2, flows into the filter element 6 after filtering the particulate impurities through the filter screen 8, and then pushes the sliding plug 14 to enter the vent valve seat 13 and then flows into the connecting bolt 11, and then flows into the rear-end pipeline from the lower port of the connecting bolt 11. The hydrogen filling port purifies the hydrogen through the filter screen 8, intercepts the particulate impurities, and prevents the stack from being polluted. At the same time, it has the function of a one-way valve to prevent the hydrogen from leaking out.

[0041] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A hydrogenation port for a high-pressure hydrogen storage bottle, comprising a hydrogenation port cover (1) and a hydrogenation port connector (2), characterized in that: The internal thread of the hydrogenation port connector (2) is connected to a connecting bolt (11), the external sleeve of the connecting bolt (11) is provided with a fixing nut (12), the fixing nut (12) is threadedly connected to the connecting bolt (11), the internal of the connecting bolt (11) is fixedly connected to a vent valve seat (13), the internal of the vent valve seat (13) is provided with a one-way valve spring (15), the external sleeve of the one-way valve spring (15) is provided with a sliding plug (14), the sliding plug (14) is slidably connected to the vent valve seat (13), one end of the one-way valve spring (15) is fixedly connected to the vent valve seat (13), and the one-way valve spring (15) is provided with a sliding plug (14). The sliding plug (14) is slidably connected to the vent valve seat (13). The other end of the spring (15) is fixedly connected to the sliding plug (14); a one-way valve plug (10) is arranged inside the connecting bolt (11) and located on the upper end surface of the ventilation valve seat (13); the one-way valve plug (10) is used in conjunction with the sliding plug (14); a filter element (6) is arranged inside the connecting bolt (11) and located on the upper end surface of the one-way valve plug (10); a filter screen (8) is arranged on the outside of the filter element (6); the filter screen (8) is detachably connected to the filter element (6); a filter element cap (7) is connected to the internal thread of the filter element (6); the filter element cap (7) is used in conjunction with the filter screen (8).

2. A hydrogen filling port for a high-pressure hydrogen storage bottle according to claim 1, characterized in that: A connector sealing ring 1 (3) is arranged inside the hydrogenation port connector (2).

3. The hydrogen filling port for a high-pressure hydrogen storage bottle according to claim 1, characterized in that: A second connector sealing ring (4) is arranged inside the hydrogenation port connector (2) and below the first connector sealing ring (3), and connector retaining rings (5) are arranged on the corresponding two side edges of the second connector sealing ring (4).

4. The hydrogen filling port for a high-pressure hydrogen storage bottle according to claim 1, characterized in that: A sealing gasket (9) is sleeved on the outside of the filter element (6) and located on the upper end surface of the connecting bolt (11).

5. The hydrogen filling port for a high-pressure hydrogen storage bottle according to claim 1, characterized in that: The lower end surface of the connecting bolt (11) is provided with an interface sealing ring (16).

Images