Hydrogen cylinder port combination valve apparatus

Abstract

The utility model belongs to valve field, specifically speaking is a kind of hydrogen bottle mouth combination valve equipment including cylinder switch valve;The side of cylinder switch valve is fixed with pressure reducing valve, the side of pressure reducing valve is equipped with hydrogen filter, the side of hydrogen filter is equipped with gas flowmeter, the side of gas flowmeter is fixed with gas pipe, the end of gas pipe away from gas flowmeter is fixed with flange, when using, cylinder switch valve is installed on gas cylinder, it is used to control the switch of gas cylinder bleeds, cylinder switch valve is connected with pressure reducing valve, pressure reducing valve is used to hydrogen pressure reduction, then connected with gas flowmeter to determine the hydrogen amount of filling, rely on above-mentioned combination valve structure, so it can be filled with hydrogen conveniently, and improve the security of filling.

Description

Technical Field

[0001] This utility model relates to the field of valves, specifically a combination valve device for hydrogen cylinder openings. Background Technology

[0002] Among existing technologies, hydrogen fuel cell vehicles are a new type of energy-saving, pollution-free, "zero-emission" vehicle. A fuel cell is a device that directly converts the chemical energy of hydrogen and oxygen into electrical energy through electrode reactions. It has high energy conversion efficiency and is considered the most ideal driving power source for electric vehicles in the future.

[0003] Hydrogen cylinders are common containers for storing hydrogen. A valve is installed on the top of the hydrogen cylinder to control its opening and closing. However, the valve structure of existing hydrogen cylinders has a single function and is inconvenient to use when filling hydrogen. Therefore, a combined valve device for hydrogen cylinder opening is proposed to address the above problems. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, this utility model proposes a hydrogen cylinder mouth combination valve device.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: The hydrogen cylinder valve assembly of this utility model includes a cylinder switch valve; a pressure reducing valve is fixedly connected to the side of the cylinder switch valve, a hydrogen filter is installed on the side of the pressure reducing valve, a gas flow meter is installed on the side of the hydrogen filter, a gas delivery pipe is fixedly connected to the side of the gas flow meter, and a flange is fixedly connected to the end of the gas delivery pipe away from the gas flow meter.

[0006] Preferably, the hydrogen filter includes a filter canister with a filter chamber inside. The filter chamber has an air inlet on one side and an air outlet on the other side. The air inlet is connected to a pressure reducing valve, and a filter cup is installed inside the filter chamber.

[0007] Preferably, the top of the filter chamber has an opening, and a sealing cap is threadedly connected to the opening. A first sealing ring is fixedly connected to the bottom of the sealing cap, and an annular boss is fixedly connected to the inner side wall of the middle part of the filter chamber. A second sealing ring is provided on the top of the annular boss.

[0008] Preferably, a metal filter screen is fixed to the inner wall of the filter cup, and the metal filter screen is made of stainless steel.

[0009] Preferably, a detection tube is fixedly connected between the gas flow meter and the gas outlet, and a temperature sensor and a gas pressure sensor are fixedly connected to the detection tube.

[0010] Preferably, a push rod is rotatably connected to the bottom of the sealing cap, and an annular frame is slidably connected to the middle of the push rod. The annular frame is located above the filter cup, and a spring is fixed between the push rod and the annular frame.

[0011] The advantages of this utility model are:

[0012] 1. This utility model, by setting up a valve switch, a pressure reducing valve, a hydrogen filter, and a gas flow meter, allows for convenient hydrogen filling and improved filling safety by setting up a valve switch, a pressure reducing valve, a hydrogen filter, and a gas flow meter.

[0013] 2. This utility model, by setting up a filter canister and a filter cup, in use, the filter includes a filter canister and an internally installed filter cup. The air outlet and air inlet of the filter canister are used for the entry and exit of hydrogen gas, respectively. Relying on the internally installed filter cup, hydrogen gas can be filtered, thereby reducing the impact of solid particles on the operation of the hydrogen fuel cell. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the filter tank structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the filter chamber structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the ring frame of this utility model.

[0020] In the diagram: 11. Gas cylinder switch valve; 12. Pressure reducing valve; 13. Hydrogen filter; 14. Gas flow meter; 15. Gas delivery pipe; 16. Flange; 21. Filter canister; 22. Filter chamber; 23. Gas outlet; 24. Gas inlet; 25. Filter cup; 31. Opening; 32. Sealing cap; 33. First sealing ring; 34. Second sealing ring; 4. Filter screen; 51. Detection tube; 52. Temperature sensor; 53. Gas pressure sensor; 61. Push rod; 62. Ring frame. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0022] Specific implementation examples are given below.

[0023] Please see Figure 1-5 As shown, a hydrogen cylinder valve assembly includes a cylinder switch valve 11; a pressure reducing valve 12 is fixedly connected to the side of the cylinder switch valve 11, a hydrogen filter 13 is installed on the side of the pressure reducing valve 12, a gas flow meter 14 is installed on the side of the hydrogen filter 13, a gas delivery pipe 15 is fixedly connected to the side of the gas flow meter 14, and a flange 16 is fixedly connected to the end of the gas delivery pipe 15 away from the gas flow meter 14.

[0024] In use, the gas cylinder switch valve 11 is installed on the gas cylinder and is used to control the gas cylinder venting. The gas cylinder switch valve 11 is connected to a pressure reducing valve 12, which is used to reduce the pressure of hydrogen. Then, a gas flow meter 14 is connected to determine the amount of hydrogen to be added. A gas delivery pipe 15 is installed on the gas flow meter 14, and a flange 16 is provided on the gas delivery pipe 15 for connection with the gas filling pipeline. Relying on the above-mentioned combined valve structure, hydrogen can be conveniently added and the safety of the addition can be improved.

[0025] Furthermore, such as Figure 1-5As shown, the hydrogen filter 13 includes a filter canister 21, with a filter chamber 22 inside the filter canister 21. An air inlet 24 is provided on one side of the filter chamber 22, and an air outlet 23 is provided on the other side. The air inlet 24 is connected to a pressure reducing valve 12. A filter cup 25 is installed inside the filter chamber 22. An opening 31 is provided at the top of the filter chamber 22, and a sealing cap 32 is threaded onto the opening 31. A first sealing ring 33 is fixed to the bottom of the sealing cap 32. An annular boss is fixed to the inner wall of the middle part of the filter chamber 22, and a second sealing ring 34 is provided at the top of the annular boss. A metal filter screen 4, made of stainless steel, is fixed to the inner wall of the filter cup 25.

[0026] In use, the filter includes a filter canister 21 and an internally installed filter cup 25. The outlet 23 and inlet 24 of the filter canister 21 are used for the entry and exit of hydrogen, respectively. The internally installed filter cup 25 can filter the hydrogen, thereby reducing the impact of solid particles on the operation of the hydrogen fuel cell. The filter cup 25 is a PTFE filter cup.

[0027] Furthermore, the top of the filter tank 21 has an opening 31, and a sealing cap 32 is threadedly connected to the opening 31. Due to this detachable structure, the internal filter cup 25 can be easily replaced. The sealing cap 32 and the opening 31 are sealed by a first sealing ring 33. The filter chamber 22 has an annular boss in the middle, which cooperates with the second sealing ring 34 to seal the filter cup 25 and the filter chamber 22.

[0028] Furthermore, such as Figure 1-5 As shown, a push rod 61 is rotatably connected to the bottom of the sealing cover 32, and an annular frame 62 is slidably connected to the middle of the push rod 61. The annular frame 62 is located above the filter cup 25, and a spring is fixed between the push rod 61 and the annular frame 62.

[0029] During the process of screwing the sealing cap 32, the sealing cap 32 will push the push rod 61 and the annular frame 62 to move. The annular frame 62 presses on the filter cup 25 and applies pressure through the spring, thereby sealing the filter cup 25 with the annular boss. The sealing pressure is applied by the spring, which makes it easier to control the sealing pressure, and the annular frame 62 makes the sealing pressure applied more evenly.

[0030] Working principle: During use, the gas cylinder switch valve 11 is installed on the gas cylinder and is used to control the gas cylinder to release gas. The gas cylinder switch valve 11 is connected to a pressure reducing valve 12, which is used to reduce the pressure of hydrogen. Then, a gas flow meter 14 is connected to determine the amount of hydrogen to be added. A gas delivery pipe 15 is installed on the gas flow meter 14, and a flange 16 is provided on the gas delivery pipe 15 for connecting to the gas filling pipeline.

[0031] In use, the filter includes a filter canister 21 and an internally installed filter cup 25. The outlet 23 and inlet 24 of the filter canister 21 are used for the entry and exit of hydrogen, respectively. The internally installed filter cup 25 can filter the hydrogen, thereby reducing the impact of solid particles on the operation of the hydrogen fuel cell. The filter cup 25 is a PTFE filter cup.

[0032] Furthermore, the top of the filter tank 21 has an opening 31, and a sealing cap 32 is threadedly connected to the opening 31. Due to this detachable structure, the internal filter cup 25 can be easily replaced. The sealing cap 32 and the opening 31 are sealed by a first sealing ring 33. The filter chamber 22 has an annular boss in the middle, which cooperates with the second sealing ring 34 to seal the filter cup 25 and the filter chamber 22.

[0033] During use, a detection tube 51 is installed between the gas flow meter 14 and the outlet 23 of the filter tank 21. A temperature sensor 52 and a gas pressure sensor 53 are fixedly connected to the detection tube 51. They are used to detect the pressure and temperature of the gas during the release of the hydrogen cylinder, thereby improving the safety of use.

[0034] During the process of screwing the sealing cap 32, the sealing cap 32 will push the push rod 61 and the annular frame 62 to move. The annular frame 62 presses on the filter cup 25 and applies pressure through the spring, thereby sealing the filter cup 25 with the annular boss. The sealing pressure is applied by the spring, which makes it easier to control the sealing pressure, and the annular frame 62 makes the sealing pressure applied more evenly.

[0035] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A hydrogen cylinder valve assembly, comprising a cylinder switching valve (11); characterized in that: A pressure reducing valve (12) is fixedly connected to the side of the gas cylinder switch valve (11). A hydrogen filter (13) is installed on the side of the pressure reducing valve (12). A gas flow meter (14) is installed on the side of the hydrogen filter (13). A gas delivery pipe (15) is fixedly connected to the side of the gas flow meter (14). A flange (16) is fixedly connected to the end of the gas delivery pipe (15) away from the gas flow meter (14).

2. The hydrogen cylinder valve assembly according to claim 1, characterized in that: The hydrogen filter (13) includes a filter canister (21), a filter chamber (22) is provided inside the filter canister (21), an air inlet (24) is provided on one side of the filter chamber (22), an air outlet (23) is provided on the other side of the filter chamber (22), the air inlet (24) is connected to a pressure reducing valve (12), and a filter cup (25) is installed inside the filter chamber (22).

3. The hydrogen cylinder valve assembly according to claim 2, characterized in that: The filter chamber (22) has an opening (31) at the top, and a sealing cover (32) is connected to the opening (31) by a thread. A first sealing ring (33) is fixed to the bottom of the sealing cover (32). An annular boss is fixed to the inner wall of the middle part of the filter chamber (22), and a second sealing ring (34) is provided on the top of the annular boss.

4. The hydrogen cylinder valve assembly according to claim 3, characterized in that: A metal filter screen (4) is fixed to the inner wall of the filter cup (25), and the metal filter screen (4) is made of stainless steel.

5. The hydrogen cylinder valve assembly according to claim 4, characterized in that: A detection tube (51) is fixed between the gas flow meter (14) and the gas outlet (23), and a temperature sensor (52) and a gas pressure sensor (53) are fixed on the detection tube (51).

6. The hydrogen cylinder valve assembly according to claim 5, characterized in that: The bottom of the sealing cap (32) is rotatably connected to a push rod (61), and the middle part of the push rod (61) is slidably connected to an annular frame (62). The annular frame (62) is located above the filter cup (25), and a spring is fixed between the push rod (61) and the annular frame (62).

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