Gas cylinder valve assembly and hydrogen storage device

Abstract

The invention discloses a gas cylinder valve assembly and a hydrogen storage device, and belongs to the field of hydrogen energy application. One end of the valve body is integrally connected with a bottle opening of the hydrogen storage bottle, and the integrated valve is connected with the valve body in a split mode. The valve body is provided with a pressure relief device, and the other end of the valve body is connected with a quick-mounting male connector in a sealed mode. The pile-up valve is provided with a pressure reducing valve assembly, and one end of the pile-up valve is connected with a quick-assembly female connector in a sealed mode. According to the hydrogen storage device, the hydrogen storage bottle is integrally connected with the bottle valve, the integrated valve is designed in a split mode, and the quick-connection male connector is arranged on the valve body and matched with the quick-assembly female connector arranged on the integrated valve, so that automatic connection of a hydrogen supply pipeline is achieved, disassembly and assembly of the pipeline are reduced, the size of the hydrogen storage bottle is greatly reduced, and the hydrogen storage device is convenient to carry and transport.

Description

Technical Field

[0001] The invention belongs to the field of hydrogen energy application, in particular to a gas cylinder valve assembly and a hydrogen storage device. Background Art

[0002] Hydrogen energy is abundant in sources, has high mass energy density, is environmentally friendly during use, and has no carbon emissions. It is touted as the ideal energy of the 21st century and has been elevated to a national strategic level by many countries. On the one hand, due to the volatility of renewable energy such as wind and light, it is difficult to directly connect to the grid for large-scale use. The National Development and Reform Commission has clearly included hydrogen energy in the new energy storage method. At present, the main storage methods of hydrogen are high-pressure hydrogen storage, liquid hydrogen storage, and solid hydrogen storage.

[0003] The bottle mouth combination valve that ensures the safety of the hydrogen storage bottle and the normal filling / gas supply is one of the key components in the hydrogen system. The bottle mouth combination valve is usually referred to as the gas cylinder valve. Commonly used gas cylinder valves usually only have the function of a switch. In the related technology, multiple functional valves are combined and designed into an integrated valve. By installing the integrated valve on the gas storage container, the pipeline layout of the gas supply line is further simplified, the possibility of intertwining between pipelines is reduced, and the difficulty of later maintenance is reduced. However, since the integrated valve is large in size and easy to damage, it is necessary to design a corresponding protective cover on the gas storage container to protect the integrated valve, which further increases the volume of the entire gas storage container, which is contrary to the original design intention of the low-pressure solid-state hydrogen storage container. Summary of the invention

[0004] In order to overcome the above technical defects, the present invention provides a gas cylinder valve assembly and a hydrogen storage device to solve the problems involved in the background technology.

[0005] The present invention provides a gas cylinder valve assembly, comprising: a valve body having one end integrally connected to the mouth of a hydrogen storage bottle, and an integrated valve separately connected to the valve body; the valve body is provided with a pressure relief device, and a quick-release male connector is sealed and connected to the other end of the valve body; the integrated valve is provided with a pressure reducing valve assembly, and a quick-release female connector is sealed and connected to one end of the integrated valve.

[0006] Preferably or optionally, an aluminum filter element is provided at one end of the valve body.

[0007] Preferably or optionally, the aluminum filter element is a column having a dense honeycomb mesh structure formed by sintering metal aluminum or aluminum alloy material.

[0008] Preferably or optionally, a protection portion is formed on an upper portion of the valve body, and the protection portion extends outwardly along the valve body to completely accommodate the quick-release male connector.

[0009] Preferably or optionally, the pressure relief device comprises:

[0010] A safety bolt, wherein a pressure relief passage connected to the outside is arranged inside the safety bolt and / or the valve body;

[0011] A safety plate is arranged on one side of the safety bolt to separate the inside of the valve body from the outside;

[0012] A flat washer is arranged between the safety plate and the safety bolt and is used for sealingly connecting the safety plate.

[0013] Preferably or optionally, an outlet of the pressure relief channel is arranged inside the protection portion.

[0014] Preferably or optionally, a gas core rod is arranged inside the quick-release male connector to maintain a tendency to close the hydrogen flow channel formed by the valve body and / or the quick-release male connector.

[0015] Preferably or optionally, the quick-release male connector and the quick-release female connector are sealed and connected in a detachable manner;

[0016] When the quick-release male connector is plugged into the quick-release female connector, a passage is formed between the hydrogen-using device and the hydrogen-storing device.

[0017] Preferably or optionally, the connection position between the integrated valve and the quick-release female connector deviates from the central axis of the integrated valve to form an eccentric structure.

[0018] Preferably or optionally, an O-ring is also provided between the valve body and the interface of the hydrogen storage bottle.

[0019] The present invention also provides a hydrogen storage device, comprising a hydrogen storage bottle and the gas cylinder valve assembly.

[0020] The present invention relates to a gas cylinder valve assembly and a hydrogen storage device, which have the following beneficial effects compared to the prior art: the present invention realizes automatic connection of the hydrogen supply pipeline by connecting the bottle valve in an integrated manner to the hydrogen storage bottle, designing the integrated valve in a split manner, and arranging a quick-connect male connector on the valve body to cooperate with the quick-connect female connector arranged on the integrated valve, thereby reducing the disassembly and installation of the pipeline, and greatly reducing the volume of the hydrogen storage bottle, which facilitates the carrying and transportation of the hydrogen storage device. In addition, a pressure relief device is arranged on the valve body, and when the pressure in the hydrogen storage bottle is too high, the safety plate can play a role in pressure relief protection, thereby improving the safety of the entire hydrogen storage bottle. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the hydrogen storage device in the present invention.

[0022] Figure 2 It is a cross-sectional schematic diagram of a bottle valve in the present invention.

[0023] Figure 3 It is a cross-sectional schematic diagram of another bottle valve in the present invention.

[0024] Figure 4 It is a structural schematic diagram of an integrated valve and a quick-release female connector in the present invention.

[0025] Figure 5 It is a side schematic diagram of the integrated valve and the quick-release female connector in the present invention.

[0026] The accompanying drawings are marked as follows: 100, hydrogen storage bottle; 210, valve body; 211, protection part; 220, quick-release male connector; 221, gas core rod; 231, safety bolt; 232, safety plate; 233, flat washer; 234, pressure relief channel; 240, sealing ring; 300, integrated valve; 310, mounting hole; 400, quick-release female connector; 500, aluminum filter element. DETAILED DESCRIPTION

[0027] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is apparent to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features well known in the art are not described.

[0028] See attached Figures 1 to 5 This embodiment provides a gas cylinder valve assembly, including: a valve body 210 integrally connected to the mouth of a hydrogen storage bottle 100 at one end, and an integrated valve 300 separately connected to the valve body 210; the valve body 210 is provided with a pressure relief device, and a quick-release male connector 220 is sealed and connected to the other end of the valve body 210; the integrated valve 300 is provided with a pressure relief valve assembly, and a quick-release female connector 400 is sealed and connected to one end of the integrated valve 300. The other end of the integrated valve 300 is sealed and connected to a hydrogen-using device through a pipeline, and the quick-release male connector 220 and the quick-release female connector 400 are sealed and connected in a detachable manner; when the quick-release male connector 220 is plugged into the quick-release female connector 400, a passage is formed between the hydrogen-using device and the hydrogen storage device.

[0029] One end of the valve body 210 is sealed and installed at the interface of the hydrogen storage bottle 100 by means of integral molding, threaded connection, or clamped connection. In this embodiment, the valve body 210 is installed at the interface of the hydrogen storage bottle 100 by threaded connection, and an O-ring 240 is also provided between the valve body 210 and the interface of the hydrogen storage bottle 100 to ensure the sealing of the connection between the hydrogen storage bottle 100 and the valve body 210.

[0030] A pressure relief device is provided on the valve body 210, and the pressure relief device includes: a safety bolt 231, a safety plate 232 and a flat washer 233. A passage connected to the outside is provided inside the safety bolt 231; the safety plate 232 is provided on one side inside the safety bolt 231 to separate the inside of the valve body 210 from the outside; the flat washer 233 is provided between the safety plate 232 and the safety bolt 231 to seal and connect the safety plate 232. When the pressure inside the hydrogen storage bottle 100 is too high, the safety plate 232 is broken through the limit pressure that the safety plate 232 can withstand, so that the safety bolt 231 and / or the pressure relief channel 234 inside the valve body 210 are connected with the hydrogen flow channel inside the valve body 210, which plays a role in pressure relief protection.

[0031] In further embodiments, see the attached Figure 3 The upper part of the valve body 210 extends to completely accommodate the quick-release male connector 220, forming a protective portion 211. The valve body 210 and the protective portion 211 are an integrated structure, and the outlet of the pressure relief channel 234 inside the safety bolt 231 extends to the inside of the protective portion 211. The existence of the protective portion 211 prevents the quick-release male connector 220 and the outlet of the pressure relief channel 234 from being damaged due to collisions in the hydrogen storage device, thereby protecting the outlet of the quick-release male connector 220 and the outlet of the pressure relief channel 234 and improving the safety of the hydrogen storage device.

[0032] The quick-release male connector 220 is sealingly connected to the other end of the valve body 210, and an air core rod 221 is arranged inside the quick-release male connector 220, and the air core rod 221 maintains the tendency to close the hydrogen flow passage formed by the valve body 210 and / or the quick-release male connector 220. Therefore, when the quick-release male connector 220 is in a disconnected state, it has a disconnection and interception function, so that the gas storage device forms a short circuit. When the quick-release male connector 220 cooperates with the quick-release female connector 400, a ejector pin is arranged inside the quick-release female connector 400, and the ejector pin can just push the air core rod 221 to move, open the hydrogen flow passage formed by the valve body 210 and / or the quick-release male connector 220, so that the hydrogen-using device and the hydrogen storage device form a passage, realize the automatic connection of the hydrogen supply pipeline, and reduce the disassembly and installation of the pipeline.

[0033] In a further embodiment, the hydrogen storage device is built with solid hydrogen storage material. In order to prevent the escape of solid hydrogen storage material, a filter device is generally set on the valve body 210 used on the hydrogen storage bottle 100. The current filter device generally uses cotton + filter tip for filtering, but after a long period of use, it is found that the cotton + filter tip is blocked, and even the solid hydrogen storage material will pass through the cotton + filter tip, and there are problems such as unstable and unreliable filtering. In this example, the filter device is changed to an aluminum filter element 500. Specifically, the aluminum filter element 500 is a column with a dense honeycomb mesh structure sintered by metal aluminum or aluminum alloy material. In this way, the filterability can be greatly improved, the stability is enhanced, the escape of solid hydrogen storage material is prevented, and the blockage of metal powder is also prevented. In the specific use process, the aluminum filter element 500 can be directly installed on one end of the valve body 210 and fixed by a buckle or steel wire. With the valve body 210 directly installed on the hydrogen storage bottle 100, the installation is convenient and the stability of the filtration can be guaranteed.

[0034] The integrated valve 300 can be reasonably designed and selected according to different application scenarios of the hydrogen storage device. The integrated valve 300 includes at least a pressure reducing valve assembly, which mainly realizes the pressure reducing function. However, for those skilled in the art, the integrated valve 300 can also be a collection of one or more valves such as a pressure reducing valve, a safety valve or a control valve. For the specific structure, please refer to the company's prior application, publication number CN113063001A. By combining multiple functional valves into an integrated valve 300, the integrated valve 300 has a reasonable design structure, high integration, good safety performance and long service life.

[0035] In further embodiments, see the attached Figures 4 to 5 The connection position of the integrated valve 300 and the quick-install female connector 400 deviates from the central axis of the integrated valve 300, forming an eccentric structure. Since the hydrogen in the hydrogen storage device passes through the aluminum filter element 500, the quick-install male connector 220 and the quick-install female connector 400 to form multiple hydrogen with different flow rates and directions, the eccentric design of the connection position of the integrated valve 300 and the quick-install female connector 400 ensures that the movement speed of the hydrogen is basically the same when the hydrogen passes through the second interface with a certain eccentricity and enters the entrance of various functional valves (such as pressure reducing valves), thereby improving the pressure regulation accuracy of the pressure reducing valve and increasing the service life of the pressure reducing valve.

[0036] In addition, a plurality of mounting holes 310 are provided on the side of the integrated valve 300, and the integrated valve 300 is fixedly mounted at a predetermined position by bolts or screws, etc., to ensure the connection stability of the entire hydrogen storage system when in use.

[0037] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

Claims

1. A gas cylinder valve assembly, characterized in that: include: A valve body (210) having one end integrally connected to the mouth of a hydrogen storage bottle (100), and an integrated valve (300) separately connected to the valve body (210); the valve body (210) is provided with a pressure relief device, and a quick-install male connector (220) is sealedly connected to the other end of the valve body (210); the integrated valve (300) is provided with a pressure reducing valve assembly, and a quick-install female connector (400) is sealedly connected to one end of the integrated valve (300).

2. The gas cylinder valve assembly according to claim 1, characterized in that: A filter element (500) is disposed at one end of the valve body (210); The filter element (500) is made of a metal aluminum or aluminum alloy material and has a columnar body with a dense honeycomb mesh structure.

3. The gas cylinder valve assembly according to claim 1, characterized in that: A protection portion (211) is formed on the upper portion of the valve body (210), and the protection portion (211) extends outward along the valve body (210) to completely accommodate the quick-release male connector (220).

4. The gas cylinder valve assembly according to claim 3, characterized in that: The pressure relief device comprises: A safety bolt (231), wherein a pressure relief channel (234) connected to the outside is arranged inside the safety bolt (231) and / or the valve body (210); A safety plate (232) is arranged on one side of the interior of the safety bolt (231) to separate the interior of the valve body (210) from the outside; A flat washer (233) is disposed between the safety plate (232) and the safety bolt (231) and is used for sealingly connecting the safety plate (232).

5. The gas cylinder valve assembly according to claim 4, characterized in that: The outlet of the pressure relief channel (234) is arranged inside the protection portion (211).

6. The gas cylinder valve assembly according to claim 1, characterized in that: An air core rod (221) is disposed inside the quick-release male connector (220) to maintain a tendency to close the hydrogen flow passage formed by the valve body (210) and / or the quick-release male connector (220).

7. The gas cylinder valve assembly according to claim 1, characterized in that: The quick-release male connector (220) and the quick-release female connector (400) are sealed and connected in a detachable manner; When the quick-release male connector (220) is plugged into the quick-release female connector (400), a passage is formed between the hydrogen-using device and the hydrogen storage bottle (100).

8. The gas cylinder valve assembly according to claim 1, characterized in that: The connection position between the integrated valve (300) and the quick-release female connector (400) deviates from the central axis of the integrated valve (300), forming an eccentric structure.

9. The gas cylinder valve assembly according to claim 1, characterized in that: An O-type sealing ring (240) is also provided between the interface of the valve body (210) and the hydrogen storage bottle (100).

10. A hydrogen storage device, characterized in that: It comprises a hydrogen storage bottle (100) and the gas cylinder valve assembly according to any one of claims 1 to 9.

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