Integrated multi-functional high-pressure hydrogen cylinder valve

Abstract

This utility model relates to the field of hydrogen energy technology, and in particular to an integrated multi-functional high-pressure hydrogen cylinder valve. It includes a main control solenoid valve, a manual valve, an overflow valve, a venting valve, and a temperature-driven venting device mounted on the valve body. All of these components are located on the side of the valve body. This utility model employs an internal channel layout, integrating multiple modules such as the main control solenoid valve, manual valve, overflow valve, and temperature-driven venting device. This significantly simplifies the pipeline structure, reduces leakage risk, and achieves a revolutionary structure characterized by high-density integration, ultra-thin flatness, and high reliability maintenance.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen energy technology, and in particular to an integrated multi-functional high-pressure hydrogen cylinder valve. Background Technology

[0002] Existing hydrogen cylinder valves mostly employ a split structure, requiring external piping connections for each functional module (such as overflow valves and temperature-driven venting devices). This results in complex piping layouts, increased interfaces, and susceptibility to seal failure or leakage risks due to impurities. Furthermore, traditional valves rely on external overflow valves for pressure protection, which not only occupies space but also increases the risk of system malfunctions. During hydrogen charging and discharging, single-channel designs struggle to handle complex conditions, such as emergency depressurization or manual intervention, and lack integrated gas filtration and temperature monitoring functions, leading to insufficient system safety and stability. Integration further increases the structural bulk and process complexity. Therefore, a highly integrated valve body is urgently needed, employing an internal multi-channel collaborative design and functional module integration to address the problems of redundant piping, high leakage risk, and difficult maintenance inherent in existing technologies. Utility Model Content

[0003] The present invention aims to solve the above-mentioned defects and provide an integrated multi-functional high-pressure hydrogen cylinder valve.

[0004] To overcome the deficiencies in the background technology, the technical solution adopted by this utility model to solve its technical problem is: an integrated multi-functional high-pressure hydrogen cylinder valve, including a valve body, which internally has main and auxiliary inlet and outlet channels, a solenoid valve control channel, an internal connection channel, an emergency manual control channel, an auxiliary pressure relief channel, a release channel, a temperature-controlled release channel, an inlet and outlet channel at the valve body neck, and a return channel. The main and auxiliary inlet and outlet channels are connected to the solenoid valve control channel. The emergency manual control channel is connected to the solenoid valve control channel through the internal connection channel. The emergency manual control channel is connected to the inlet and outlet channel at the valve body neck. The temperature-controlled release channel is connected to the release channel.

[0005] The main control solenoid valve is mounted on the valve body to enable or disable the connection between the internal connection channel and the solenoid valve control channel.

[0006] A manual valve is installed in the emergency manual control channel to enable the emergency manual control channel, the internal connection channel and the air inlet and outlet channel of the valve body neck to be opened or closed simultaneously.

[0007] An overflow valve is provided in the main and auxiliary air inlet and outlet channels;

[0008] An air release valve is installed in the auxiliary pressure relief channel, which is connected to the emergency manual control channel. The auxiliary pressure relief channel is also connected to the main and auxiliary air inlet and outlet channels through a return channel. It is used to cut off and connect the emergency manual control channel and the return channel.

[0009] A temperature-driven venting device is installed in the temperature-controlled venting channel to control the connection or closure of the temperature-controlled venting channel and the venting channel;

[0010] The main control solenoid valve, manual valve, overflow valve, vent valve, and temperature-driven relief device are distributed on the side of the valve body.

[0011] Further improvements include the installation of filters in the valve body neck air inlet / outlet channels and the main / auxiliary air inlet / outlet channels.

[0012] Further improvements include the integration of a temperature sensor inside the valve body, with the temperature sensor extending from the valve body into the internal cavity of the gas cylinder.

[0013] Further improvements include providing two discharge channels, which are vertically distributed.

[0014] Further improvements include the provision of an auxiliary air inlet / outlet channel within the valve body, which communicates with the main and auxiliary air inlet / outlet channels.

[0015] Further improvements include the main and auxiliary air inlet / outlet channels being vertically distributed with the auxiliary air inlet / outlet channel.

[0016] Further improvements include the inclusion of an inflation tube connected within the air inlet / outlet channel of the valve body neck, wherein the inflation tube employs a bent tube structure.

[0017] Further improvements include having the main control solenoid valve and the temperature-driven venting device diagonally distributed on the valve body.

[0018] The beneficial effects of this utility model are as follows: This design adopts an internal channel interconnection layout, integrating a main control solenoid valve, manual valve, overflow valve, temperature-driven relief device and other multi-functional modules, which greatly simplifies the pipeline structure, reduces the risk of leakage, and achieves a revolutionary structure with high-density integration, ultra-thin flatness, and high reliability maintenance; the overflow valve and temperature-driven relief device work together to deal with overpressure and abnormal temperature respectively, and the dual relief channel design ensures rapid pressure relief in emergencies to avoid explosion accidents; the main control solenoid valve supports automatic control, and the manual valve provides emergency operation redundancy; the built-in filter and temperature sensor monitor the gas purity and temperature in real time, extending valve life and improving system stability. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a top view of the present invention;

[0021] Figure 2 This is the right view of this utility model;

[0022] Figure 3 yes Figure 2 BB section view;

[0023] Figure 4 yes Figure 2 Sectional view of TT;

[0024] Figure 5 yes Figure 2 Middle RR section view;

[0025] Figure 6 This is the front view of this utility model;

[0026] Figure 7 yes Figure 6 CC section view;

[0027] Figure 8 yes Figure 6 Sectional view of AA;

[0028] Figure 9 This is the axonometric view of the present invention. Figure 1 ;

[0029] Figure 10 This is the axonometric view of the present invention. Figure 2 ;

[0030] Figure 11 This is the axonometric view of the present invention. Figure 3 ;

[0031] Figure 12 yes Figure 11 A cross-sectional view of VV;

[0032] Figure 13 This is a schematic diagram of the present invention;

[0033] Figure 14 yes Figure 1 Sectional view of UU;

[0034] In the diagram, 1-filter, 2-main and auxiliary air inlet / outlet channels, 3-auxiliary air inlet / outlet channel, 4-main control solenoid valve, 5-solenoid valve control channel, 6-relief valve, 7-valve body, 8-temperature sensor, 9-manual valve, 10-internal connection channel, 11-emergency manual control channel, 12-auxiliary pressure relief channel, 13-temperature-driven relief device, 14-venting valve, 15-sensor socket, 16-relief channel, 17-temperature-controlled relief channel, 18-valve body neck air inlet / outlet channel, 19-inflation pipe, 20-return channel. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art without creative effort in accordance with the embodiments of the basic utility model are within the scope of protection of this utility model.

[0036] according to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 as well as Figure 13 As shown, an integrated multi-functional high-pressure hydrogen cylinder valve includes a valve body 7, which internally has main and auxiliary inlet / outlet gas channels 2, a solenoid valve control channel 5, an internal connection channel 10, an emergency manual control channel 11, an auxiliary pressure relief channel 12, a discharge channel 16, a temperature-controlled discharge channel 17, a valve body neck inlet / outlet gas channel 18, and a return channel 20. The main and auxiliary inlet / outlet gas channels 2 are connected to the solenoid valve control channel 5. The main and auxiliary inlet / outlet gas channels 2 are mainly used for the entry and exit of gas. External gas can enter the interior of the valve body 7 through the main and auxiliary inlet / outlet gas channels 2, and the gas inside the cylinder can also flow out in the reverse direction through this channel. The emergency manual control channel 11 is connected to the solenoid valve control channel 5 through the internal connection channel 10. The emergency manual control channel 11 is connected to the valve body neck inlet / outlet gas channel 18. The temperature-controlled discharge channel 17 is connected to the discharge channel 16.

[0037] The main control solenoid valve 4 is mounted on the valve body 7 and is used to connect or close the internal connection channel 10 and the solenoid valve control channel 5. When the main control solenoid valve 4 receives a working signal, it can open the passage between the solenoid valve control channel 5 and the internal connection channel 10, allowing gas to flow between them. Conversely, when the main control solenoid valve 4 is closed, the gas flow between the solenoid valve control channel 5 and the internal connection channel 10 is blocked.

[0038] Manual valve 9 is installed in the emergency manual control channel 11. Through manual control, the emergency manual control channel 11, the internal connection channel 10 and the valve body neck air inlet and outlet channel 18 can be opened or closed at the same time. When manual control of gas flow is required, the operator can conveniently control the opening and closing of these three channels by operating manual valve 9 to meet the needs of different working scenarios.

[0039] The overflow valve 6 is installed in the main and auxiliary air inlet and outlet channels 2. Its function is to stabilize the pressure and overflow and provide safety protection when the gas pressure in the channel exceeds the set overflow pressure.

[0040] The vent valve 14 is located in the auxiliary pressure relief channel 12, which is connected to the emergency manual control channel 11. The auxiliary pressure relief channel 12 is also connected to the main and auxiliary inlet / outlet air channels 2 via a return channel 20. It is used to cut off and connect the emergency manual control channel 11 and the return channel 20. This design facilitates precise adjustment of the gas inside the valve body 7 under specific circumstances, such as system pressure regulation or maintenance.

[0041] Temperature-driven venting device 13 is installed in the temperature-controlled venting channel 17 and is used to control the connection or closure of the temperature-controlled venting channel 17 and the venting channel 16. When the internal temperature of the valve body 7 rises abnormally and reaches the opening temperature set by the temperature-driven venting device 13, the temperature-driven venting device 13 opens rapidly and introduces the gas in the cylinder into the venting channel 16 through the temperature-controlled venting channel 17 for discharge, so as to avoid safety accidents caused by excessive pressure in the gas cylinder.

[0042] The main control solenoid valve 4, manual valve 9, overflow valve 6, vent valve 14, and temperature-driven venting device 13 are distributed on the side of the valve body 7. This design, while ensuring multi-functional collaborative control, breaks through the limitations of traditional valve bodies being bulky and structurally redundant, and achieves an innovative structure with high-density integration, ultra-thin flatness, and high reliability maintenance, providing key technical support for the miniaturization and lightweighting of hydrogen energy cylinders.

[0043] In this embodiment, in order to ensure the purity of the gas, filters 1 are respectively provided in the valve body neck inlet / outlet channel 18 and the main and auxiliary inlet / outlet channels 2. The filters 1 can effectively filter impurities in the gas, prevent them from causing wear or blockage to the internal components of the valve body 7, extend the service life of the valve body 7, and improve the stability of the system.

[0044] In this embodiment, a temperature sensor 8 extending into the gas cylinder is disposed inside the valve body 7. The temperature sensor 8 can monitor the temperature of hydrogen in the gas cylinder in real time. The valve body 7 is provided with a sensor socket 15. A plug is connected to the sensor socket 15 to provide power to the temperature sensor 8 so that it can work normally. The temperature sensor 8 transmits the monitored temperature data to the relevant control system, providing an important basis for the safe operation and status monitoring of the system.

[0045] In this embodiment, to further enhance the safety of the system, at least two venting channels 16 are provided. The design of multiple venting channels 16 can more efficiently discharge the gas in the bottle in an emergency, reduce pressure, and reduce safety risks. The two venting channels 16 are vertically distributed.

[0046] In this embodiment, the valve body 7 is provided with an auxiliary inlet / outlet channel 3 that communicates with the main and auxiliary inlet / outlet channels 2. This design optimizes the gas inlet / outlet path, improves the efficiency of gas flow, and ensures that the valve body 7 can operate stably under various working conditions. The main and auxiliary inlet / outlet channels 2 and the auxiliary inlet / outlet channels 3 are vertically distributed, and preferably there are two auxiliary inlet / outlet channels 3.

[0047] In this embodiment, an inflation pipe 19 is connected inside the air inlet / outlet channel 18 of the valve body neck. The inflation pipe 19 adopts a bent pipe structure and is made of high-strength, gas-corrosion-resistant 316L stainless steel. This material can maintain the integrity and stability of the structure even under long-term gas impact and erosion. Its unique L-shaped design can effectively change the direction of gas injection within the air inlet / outlet channel 18 of the valve body neck. The inflation pipe 19 is connected by welding, threading, or movable connection. One end of the inflation pipe 19 is tightly connected to the inner wall of the air inlet / outlet channel 18 of the valve body neck. The connection point undergoes strict flaw detection to ensure there are no gaps or leaks, ensuring that the gas can be completely discharged through the inflation pipe 19. With this design, when gas is ejected from the inlet / outlet channel 18 of the valve body neck, the gas flows in the L-shaped path of the filling pipe 19, and its ejection direction is changed multiple times, avoiding the gas from being sprayed directly to the bottom of the gas cylinder in a straight line. In this way, the bottom of the gas cylinder can be prevented from being locally worn and deformed due to the direct and strong impact of the gas, thereby effectively extending the service life of the gas cylinder and ensuring the safe and stable operation of the entire system.

[0048] The main control solenoid valve 4 and the temperature-driven relief device 13 are diagonally distributed on the valve body 7. Since the main control solenoid valve 4 generates high temperatures during operation, if the two are too close, the high temperature may interfere with the normal operation logic of the temperature-driven relief device 13, thereby affecting its performance stability and reliability. By diagonally distributing them, the distance between them can be effectively increased, minimizing the impact of the high temperature generated by the main control solenoid valve 4 on the temperature-driven relief device 13, ensuring that the temperature-driven relief device 13 is always in a suitable working environment, thus guaranteeing its normal and stable operation.

[0049] Working principle: During the hydrogenation process, hydrogen enters through the auxiliary inlet / outlet channel 3 or the main and auxiliary inlet / outlet channel 2. Then, the gas passes through the filter 1 and the overflow valve 6. The high-pressure gas automatically opens the main control solenoid valve 4, and the hydrogen enters the gas cylinder through the emergency manual control channel 11 and the valve body neck inlet / outlet channel 18 in sequence, thus completing the hydrogenation process.

[0050] During hydrogen use, the 12V or 24V main control solenoid valve 4 opens after being energized. Hydrogen gas passes sequentially through filter 1, main control solenoid valve 4, overflow valve 6, and filter 1 again, finally exiting through the main / auxiliary inlet / outlet channel 2 or auxiliary inlet / outlet channel 3 to supply the hydrogen fuel cell. If a downstream pipeline leaks or breaks due to an accident during hydrogen use, it may cause excessive hydrogen flow. In this case, the overflow valve 6 inside valve body 7 will be activated to prevent a large amount of hydrogen from being released, which could lead to a fire or explosion hazard.

[0051] When the main control solenoid valve 4 fails, a vent valve 14 is designed to discharge the gas in the cylinder. By opening this valve, the gas can be quickly discharged into the safe atmospheric environment through the main and auxiliary inlet / outlet channels 2 and the auxiliary inlet / outlet channel 3.

[0052] When an external fire occurs, a temperature-driven relief device 13 is designed inside the valve body 7. When the temperature reaches the activation temperature, the temperature-driven relief device 13 is activated, and the gas in the cylinder is discharged into the atmosphere through the relief channel 16 to prevent the cylinder pressure from rising and causing an explosion due to a fire.

[0053] The valve body 7 adopts an integrated molding technology, and the housing of the temperature sensor 8 is directly die-cast on the valve body 7, which avoids leakage of the temperature sensor 8. When the temperature sensor 8 fails, it can be directly replaced, which is easy to maintain. The temperature sensor 8 is connected by an integrated temperature sensor 8 connector, and the user can directly connect the external power supply to the connector, which is convenient for installation.

[0054] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An integrated multi-functional high-pressure hydrogen cylinder valve, characterized in that, The valve body (7) includes a main and auxiliary air inlet / outlet channel (2), a solenoid valve control channel (5), an internal connection channel (10), an emergency manual control channel (11), an auxiliary pressure relief channel (12), a discharge channel (16), a temperature-controlled discharge channel (17), a valve body neck air inlet / outlet channel (18), and a return channel (20). The main and auxiliary air inlet / outlet channels (2) are connected to the solenoid valve control channel (5). The emergency manual control channel (11) is connected to the solenoid valve control channel (5) through the internal connection channel (10). The emergency manual control channel (11) is connected to the valve body neck air inlet / outlet channel (18). The temperature-controlled discharge channel (17) is connected to the discharge channel (16). The main control solenoid valve (4) is mounted on the valve body (7) to enable or close the internal connection channel (10) and the solenoid valve control channel (5); Manual valve (9), which is installed in the emergency manual control channel (11) to enable the emergency manual control channel (11), the internal connection channel (10) and the valve body neck air inlet and outlet channel (18) to be opened or closed simultaneously; An overflow valve (6) is provided in the main and auxiliary air inlet and outlet channels (2); The vent valve (14) is installed in the auxiliary pressure relief channel (12), which is connected to the emergency manual control channel (11) and is connected to the main and auxiliary air inlet and outlet channels (2) through the return channel (20). It is used to realize the cut-off and connection of the emergency manual control channel (11) and the return channel (20). A temperature-driven venting device (13) is installed in the temperature-controlled venting channel (17) to control the connection or closure of the temperature-controlled venting channel (17) and the venting channel (16); The main control solenoid valve (4), manual valve (9), overflow valve (6), vent valve (14), and temperature-driven venting device (13) are distributed on the side of the valve body (7).

2. The integrated multi-functional high-pressure hydrogen cylinder valve as described in claim 1, characterized in that: The valve body neck air inlet / outlet channel (18) and the main and auxiliary air inlet / outlet channels (2) are respectively equipped with filters (1).

3. The integrated multi-functional high-pressure hydrogen cylinder valve as described in claim 1, characterized in that: The valve body (7) integrates a temperature sensor (8), which extends from the valve body (7) into the internal cavity of the gas cylinder.

4. The integrated multi-functional high-pressure hydrogen cylinder valve as described in claim 1, characterized in that: Two discharge channels (16) are provided, and the discharge channels (16) are vertically distributed.

5. The integrated multi-functional high-pressure hydrogen cylinder valve as described in claim 1, characterized in that: The valve body (7) has an auxiliary air inlet / outlet channel (3) that is connected to the main and auxiliary air inlet / outlet channels (2).

6. The integrated multi-functional high-pressure hydrogen cylinder valve as described in claim 5, characterized in that: The main and auxiliary air inlet / outlet channels (2) are perpendicular to the auxiliary air inlet / outlet channel (3).

7. The integrated multi-functional high-pressure hydrogen cylinder valve as described in claim 1, characterized in that: An inflation tube (19) is connected inside the air inlet / outlet channel (18) of the valve body neck, and the inflation tube (19) adopts a bent tube structure.

8. The integrated multi-functional high-pressure hydrogen cylinder valve as described in claim 1, characterized in that: The main control solenoid valve (4) and the temperature-driven venting device (13) are diagonally distributed on the valve body (7).

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