Air-blocking drain valve
By designing a gas leakage structure in the gas barrier drain valve and using the combination of float balls and sealing rings, the problem of hydrogen leakage during the drainage process of traditional valves is solved, achieving higher safety and hydrogen quality.
Patent Information
- Application Number
- CN202421857799.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-02
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-08-02
AI Technical Summary
Traditional gas barrier drain valves are prone to hydrogen leakage during drainage, affecting the safety of the equipment and the quality of the hydrogen.
A gas barrier drain valve is designed, with a gas leakage structure inside, including a sealing ring and a floating ball. When there is no water in the valve body, the float ball presses the sealing ring by gravity to ensure that the hydrogen is discharged; when there is water in the valve body, the float ball rises, and the water flows out along the outer wall of the float rod, and the sealing ring is pressed again to prevent hydrogen from being discharged; leakage.
It effectively prevents hydrogen leakage during drainage, ensures the safety of the equipment and the quality of hydrogen, and is compact in structure and wide applicability.
Smart Images
Figure CN222459179U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hydrogen production equipment, in particular to a gas blocking and draining valve. Background Art
[0002] The gas-blocking drain valve is a valve used in a pipeline system. It is mainly used to discharge the gas in the system to keep the pipeline system running stably and efficiently. At present, with the rapid development of hydrogen energy, the quality of hydrogen is getting higher and higher. It is extremely important to improve the quality of hydrogen while ensuring the stable operation of hydrogen production equipment.
[0003] At present, the production of water is inevitable in the process of hydrogen purification. Since the gas is hydrogen, it is not allowed to discharge hydrogen indoors at will from a safety perspective. The inventors have found that the traditional gas-blocking drain valve has the problem of hydrogen leakage during the drainage process. Therefore, we have proposed a gas-blocking drain valve. Utility Model Content
[0004] 1. Technical issues to be resolved
[0005] In view of the deficiencies in the prior art, the utility model provides a gas-blocking drain valve, which has the advantages of preventing hydrogen leakage during the drainage process, compact structure, high safety, etc., and solves the problem of hydrogen leakage in the traditional gas-blocking drain valve during the drainage process.
[0006] (II) Technical solution
[0007] In order to achieve the above purpose of preventing hydrogen leakage during drainage, and having a compact structure and high safety, the utility model provides the following technical solutions: a gas blocking drainage valve, wherein a gas leakage structure is arranged inside the gas blocking drainage valve;
[0008] The gas leakage structure includes a sealing ring and a float rod. The sealing ring is movably connected to the interior of the gas blocking drain valve, the float rod is movably connected to the interior of the gas blocking drain valve, a float is fixedly installed on one end of the float rod, and the float and the sealing ring are movably connected. When there is no water in the valve body of the gas blocking drain valve, the float presses the sealing ring by its own gravity and ensures that the drainage pipeline is in a blocked state. At the same time, it can ensure that hydrogen is discharged from the inner cavity of the hydrogen outlet pipeline; when a certain amount of water is stored in the valve body of the gas blocking drain valve, the float will rise under the action of buoyancy, and water will slowly flow out of the inner cavity of the drainage pipeline along the outer wall of the float rod. When the liquid level drops, the buoyancy of the float is less than the float's own gravity, and the sealing ring is re-pressed. That is, no matter which of the above states is, it can ensure that the hydrogen coming in from the gas-liquid inlet pipeline will not be discharged into the room with the water to ensure safety, thereby preventing hydrogen leakage during the drainage process, and the structure is compact and safe.
[0009] As a preferred technical solution of the utility model, the gas blocking and draining valve comprises a quick-opening flange, a hydrogen outlet pipeline is fixedly installed inside the top of the quick-opening flange, and a gas-liquid inlet pipeline is fixedly installed inside the outer surface of the quick-opening flange;
[0010] A sealing head is provided at one end of the quick-opening flange away from the hydrogen outlet pipeline. The interior of the sealing head is connected with a sealing ring. A drainage pipeline is fixedly installed on the bottom wall of the inner cavity of the sealing head. The inner cavity of the drainage pipeline is movably connected to the outer surface of the float rod to prevent hydrogen leakage during the drainage process. The structure is compact and the safety is high.
[0011] As a preferred technical solution of the utility model, a clamp is provided on the quick-opening flange, and the clamp consists of a clamp body, a fastener and a sealing gasket. The sealing gasket is located on the inner side of the clamp body. The clamp body is movably connected to the fastener and is fixed by the fastener to facilitate fixing the quick-opening flange.
[0012] As a preferred technical solution of the utility model, the outer surface diameter and size of the float rod are adapted to the inner cavity diameter and size of the drainage pipe, so that the outer surface of the float rod can move along the inner cavity of the drainage pipe, and water can slowly flow out of the inner cavity of the drainage pipe along the outer wall of the float rod.
[0013] As a preferred technical solution of the utility model, the sealing ring is made of one of the materials selected from the group consisting of nitrile rubber, EPDM rubber, silicone rubber, chloroprene rubber and polytetrafluoroethylene. The sealing ring has a wide variety of materials and various forms, and can be customized into various types according to market demand. It has a wide range of applications and is easy to use.
[0014] (III) Beneficial effects
[0015] Compared with the prior art, the utility model provides a gas blocking drain valve, which has the following beneficial effects:
[0016] 1. The air-blocking drain valve, when there is no water in the valve body of the air-blocking drain valve, the float presses the sealing ring by its own gravity and ensures that the drainage pipeline is blocked. At the same time, it can ensure that hydrogen is discharged from the inner cavity of the hydrogen outlet pipeline; when a certain amount of water is stored in the valve body of the air-blocking drain valve, the float will rise under the action of buoyancy, and the water will slowly flow out of the inner cavity of the drainage pipeline along the outer wall of the float rod. When the liquid level drops, the buoyancy of the float is less than the float's own gravity, and the sealing ring is re-pressed. That is, no matter which of the above states is in effect, it can ensure that the hydrogen coming in from the gas-liquid inlet pipeline will not be discharged into the room with the water to ensure safety, thereby preventing hydrogen leakage during the drainage process, and the structure is compact and the safety is high.
[0017] 2. The gas blocking drain valve of the utility model has a sealing ring with various materials and forms, and can be customized into various types according to market demand. It has a wide range of applications and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a main perspective schematic diagram of the utility model;
[0019] Figure 2 It is a cutaway schematic diagram of the utility model.
[0020] In the figure: 1. Hydrogen outlet pipeline; 2. Clamp; 3. Quick-opening flange; 4. End cap; 5. Drainage pipeline; 6. Sealing ring; 7. Float rod; 8. Float; 9. Gas-liquid inlet pipeline. DETAILED DESCRIPTION
[0021] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.
[0022] Reference Figure 1-2 , a gas blocking and draining valve is provided, wherein a gas leakage structure is arranged inside the gas blocking and draining valve;
[0023] The gas leakage structure includes a sealing ring 6 and a float rod 7. The sealing ring 6 is movably connected to the interior of the gas blocking and drain valve. The float rod 7 is movably connected to the interior of the gas blocking and drain valve. A float 8 is fixedly installed on one end of the float rod 7. The float 8 is movably connected to the sealing ring 6.
[0024] The gas blocking and draining valve comprises a quick-opening flange 3, a hydrogen outlet pipeline 1 is fixedly installed inside the top of the quick-opening flange 3, and a gas-liquid inlet pipeline 9 is fixedly installed inside the outer surface of the quick-opening flange 3;
[0025] A sealing head 4 is provided at one end of the quick-opening flange 3 away from the hydrogen outlet pipeline 1. The interior of the sealing head 4 is connected with the sealing ring 6. A drainage pipeline 5 is fixedly installed on the bottom wall of the inner cavity of the sealing head 4. The inner cavity of the drainage pipeline 5 is movably connected to the outer surface of the float rod 7.
[0026] A clamp 2 is provided on the quick-opening flange 3, and the clamp 2 consists of a clamp body (the clamp body is the main part of the clamp 2, usually made of elastic material, and the clamp body is mainly used to connect pipes together and maintain sealing performance), fasteners (fasteners are composed of bolts, nuts and washers, and the clamp 2 is connected using bolts, nuts and washers, and the clamp 2 is tightly fixed on the pipe by adjusting the tightness of the bolts and nuts. The washers can be used to increase the tightness, reduce pressure and prevent leakage and other problems) and sealing gaskets (sealing gaskets are usually used to enhance the sealing performance of the clamp 2 to prevent leakage at the pipe connection). The sealing gasket is located on the inner side of the clamp body, and the clamp body is movably connected to the fastener and fixed by the fastener.
[0027] The outer surface diameter and size of the float rod 7 are compatible with the inner cavity diameter and size of the drainage pipe 5 .
[0028] The sealing ring 6 is made of one of the materials selected from the group consisting of nitrile rubber, EPDM rubber, silicone rubber, chloroprene rubber and polytetrafluoroethylene.
[0029] Working principle: During use, when there is no water in the valve body of the air blocking drain valve, the float 8 presses the sealing ring 6 by its own gravity and ensures that the drain pipe 5 is blocked. At the same time, it can ensure that hydrogen is discharged from the inner cavity of the hydrogen outlet pipe 1;
[0030] When a certain amount of water is stored in the valve body of the air-blocking drain valve, the float 8 will rise under the action of buoyancy, and the water will slowly flow out of the inner cavity of the drain pipe 5 along the outer wall of the float rod 7. When the liquid level drops, the buoyancy of the float 8 is less than the self-gravity of the float 8, and the sealing ring 6 is re-tightened. That is, no matter which of the above states is in effect, it can ensure that the hydrogen coming in from the gas-liquid inlet pipe 9 will not be discharged into the room with the water to ensure safety, thereby preventing hydrogen leakage during the drainage process. The device has a compact structure and high safety. The device can not only prevent hydrogen leakage during the drainage process, but also has a compact structure and high safety.
[0031] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.
Claims
1. A gas blocking and draining valve, characterized in that: The gas blocking and draining valve is provided with a gas leakage structure inside; The gas leakage structure comprises a sealing ring (6) and a float rod (7); the sealing ring (6) is movably connected to the interior of the gas blocking and draining valve; the float rod (7) is movably connected to the interior of the gas blocking and draining valve; a float (8) is fixedly mounted on one end of the float rod (7); and the float (8) is movably connected to the sealing ring (6).
2. The air blocking and draining valve according to claim 1, characterized in that: The gas blocking and draining valve comprises a quick-opening flange (3), a hydrogen outlet pipeline (1) is fixedly installed inside the top of the quick-opening flange (3), and a gas-liquid inlet pipeline (9) is fixedly installed inside the outer surface of the quick-opening flange (3); A sealing head (4) is provided at one end of the quick-opening flange (3) away from the hydrogen outlet pipeline (1); the interior of the sealing head (4) is connected to the sealing ring (6); a drainage pipeline (5) is fixedly mounted on the bottom wall of the inner cavity of the sealing head (4); and the inner cavity of the drainage pipeline (5) is movably connected to the outer surface of the float rod (7).
3. The air blocking and draining valve according to claim 2, characterized in that: The quick-opening flange (3) is provided with a clamp (2), the clamp (2) consisting of a clamp body, a fastener and a sealing gasket, the sealing gasket being located on the inner side of the clamp body, the clamp body being movably connected to the fastener and being fixed by the fastener.
4. The air blocking and draining valve according to claim 2, characterized in that: The outer surface diameter and size of the float rod (7) are compatible with the inner cavity diameter and size of the drainage pipeline (5).
5. The air blocking and draining valve according to claim 1, characterized in that: The sealing ring (6) is made of a material selected from the group consisting of nitrile rubber, EPDM rubber, silicone rubber, chloroprene rubber and polytetrafluoroethylene.