Emission protection device for hydrogen system
By using a plug body and anti-loss fasteners made of rubber material, the problems of stability and installation difficulty in hydrogen system venting pipelines are solved, enabling rapid discharge and preventing pollution, and reducing the risk of hydrogen leakage.
Patent Information
- Application Number
- CN202520631594.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-04-07
AI Technical Summary
Existing hydrogen systems have poor venting pipeline structure stability, are difficult to install, and are susceptible to water and dust contamination, posing a risk of hydrogen leakage.
The plug body and anti-loss fastener are made of rubber material. The plug body is directly fitted onto the end of the exhaust pipe. The gas discharge groove and the exhaust pipe form a 90° bend channel to prevent water and dust from entering. It is lightweight and can quickly discharge hydrogen.
It improves the stability of the venting pipeline, simplifies the installation process, prevents water and dust from entering the hydrogen system, ensures rapid discharge and prevents the cap body from being lost, and reduces the risk of hydrogen leakage.
Smart Images
Figure CN223794884U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hydrogen systems, and in particular to an emission protection device for hydrogen systems. Background Technology
[0002] In hydrogen systems, excess or overpressured gases are released through venting lines to ensure safe system operation. The design of these venting lines must take into account the characteristics of hydrogen to ensure safe venting in emergencies and prevent dangerous situations.
[0003] See Figure 1 Existing venting systems typically use stainless steel exhaust pipes. An exhaust protector is installed at the exhaust end of the pipe, and this protector is screwed into one end of an adapter via a thread, while the other end of the adapter is connected to a stainless steel rigid pipe via a clamp. The drawback of this solution is:
[0004] 1. Since the emission protector and adapter are both heavy stainless steel metal parts, and their installation position is at the end of a stainless steel tube that extends suspended above the vehicle, their stability is poor, and there is a risk that the ferrule may be damaged due to vibration during vehicle operation.
[0005] 2. During the installation process, it is necessary to first wrap a layer of PTFE tape around the emission protector, then screw it into the adapter to form a small assembly, and finally install the small assembly onto the stainless steel pipe, which is time-consuming and labor-intensive.
[0006] 3. Since the internal passages of the emission protector, adapter, and exhaust pipe are basically on the same straight line, external water or dust can easily enter the hydrogen system from the end of the emission protector. If the temperature is low, the water entering the hydrogen system will freeze, which will damage the valves of the hydrogen system and even cause the valves to fail, resulting in hydrogen leakage.
[0007] Therefore, it is necessary to improve such a structure to overcome the above-mentioned defects. Utility Model Content
[0008] The purpose of this invention is to provide an emission protection device for hydrogen systems to address the shortcomings of existing technologies.
[0009] The above-mentioned technical objective of this utility model is achieved through the following technical solution:
[0010] An emission protection device for a hydrogen system includes a plug body and an anti-loss fastener connected to the plug body;
[0011] The plug body includes a cover body and a cap. A connection hole is provided at one end of the cover body, and it is installed on the exhaust pipe of the hydrogen system through the connection hole. A limiting step is provided at the bottom of the connection hole, and the end of the exhaust pipe abuts against the limiting step. The outer surface of the end of the exhaust pipe contacts the threaded groove distributed along the connection hole. Several gas discharge grooves are provided inside the connection hole, and the gas discharge grooves are connected to the outlet end of the exhaust pipe to form a gas discharge channel.
[0012] The main body of the anti-loss fastener has an axial through hole and is fitted onto the exhaust pipe through the axial hole. The top edge of the anti-loss fastener is connected and fixed to the cap of the plug body through a connecting section.
[0013] Furthermore, the limiting step extends from the inner wall of the connecting hole toward the middle position of the connecting hole, and a gap is left between the end of the exhaust pipe and the bottom surface of the connecting hole for discharge.
[0014] Furthermore, the bottom of the gas emission groove is connected to the gap, and the top of the gas emission groove extends to the opening end of the connecting hole.
[0015] Furthermore, the limiting steps and gas emission grooves are staggered and evenly distributed along the inner surface of the connecting hole.
[0016] In summary, this utility model has the following beneficial effects:
[0017] 1. The plug body and anti-loss fastener, which adopt an integrated structure, are both made of rubber. The anti-loss fastener is sleeved on the outer surface of the exhaust pipe, and the plug body is directly sleeved on the end of the exhaust pipe. It is lightweight, easy to install, and the rubber material can absorb vibration.
[0018] 2. The gas emission groove and exhaust pipe form a gas emission channel with a bend of about 90°, which effectively prevents water and dust from entering the hydrogen system through the gas emission channel.
[0019] 3. When the required hydrogen pressure is low, it can be released through the gas discharge groove; when the required hydrogen pressure is high, the hydrogen will directly burst open the plug body, achieving rapid discharge; and the anti-loss fastener ensures that the plug body will not be lost and can be quickly reinstalled after discharge. Attached Figure Description
[0020] Figure 1 A schematic diagram of existing emission protectors and adapters.
[0021] Figure 2 This is a schematic diagram of the emission protection device described in this utility model.
[0022] Figure 3 This is a schematic diagram of the plug body described in this utility model. Detailed Implementation
[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with the illustrations and specific embodiments.
[0024] like Figure 2 and Figure 3 As shown, the present invention proposes an emission protection device for a hydrogen system, which includes a plug body 1 and an anti-loss fixing component 2 connected to the plug body 1.
[0025] The plug body 1 includes a cover body 11 and a cap 12. A connecting hole 13 is provided at one end of the cover body 11, and it is installed on the exhaust pipe 3 of the hydrogen system through the connecting hole 13. A limiting step 14 is provided at the bottom of the connecting hole 13, and the end of the exhaust pipe 3 abuts against the limiting step 14. The outer surface of the end of the exhaust pipe 3 contacts the threaded grooves 15 distributed along the connecting hole 13. A plurality of gas discharge grooves 16 are provided inside the connecting hole 13. The gas discharge grooves 16 are connected to the outlet end of the exhaust pipe 3 to form a gas discharge channel.
[0026] The main body of the anti-loss fastener 2 has an axial through hole and is sleeved on the exhaust pipe 3 through the axial hole. The top edge of the anti-loss fastener 2 is connected and fixed to the cap 12 of the plug body 1 through the connecting section 21.
[0027] The limiting step 14 extends from the inner sidewall of the connecting hole 13 toward the middle position of the connecting hole 13, and the end of the exhaust pipe 3 and the bottom surface of the connecting hole 13 are left with a gap for discharge.
[0028] The bottom of the gas discharge groove 16 is connected to the gap, and the top of the gas discharge groove 16 extends to the opening end of the connecting hole 13.
[0029] The limiting step 14 and the gas emission groove 16 are staggered and evenly distributed along the inner surface of the connecting hole 13.
[0030] The working principle of this utility model is as follows:
[0031] The plug body and anti-loss fastener, which adopt an integrated structure, are both made of rubber. The anti-loss fastener is sleeved on the outer surface of the exhaust pipe, and the plug body is directly sleeved on the end of the exhaust pipe. It is lightweight, easy to install, and the rubber material can absorb vibration.
[0032] The gas emission groove and exhaust pipe form a gas emission channel with a bend of about 90°, which effectively prevents water and dust from entering the hydrogen system through the gas emission channel.
[0033] When the required hydrogen pressure is low, it can be released through the gas discharge groove; when the required hydrogen pressure is high, the hydrogen will directly burst open the plug body, achieving rapid discharge; and the anti-loss fastener ensures that the plug body will not be lost and can be quickly reinstalled after discharge.
[0034] In this document, the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer", "vertical", and "horizontal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the purpose of clarifying the technical solution and for the convenience of description, and therefore should not be construed as limiting the present utility model.
[0035] In this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.
[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. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. An exhaust protection device for a hydrogen system, characterized in that, The plug cover body (1) and the anti-lost fixing part (2) connected with the plug cover body (1) are included. The plug cover body (1) includes a cover body (11) and a cap (12), a connecting hole (13) is formed at one end of the cover body (11), and the cover body (11) is installed on an exhaust pipe (3) of a hydrogen system through the connecting hole (13), a limiting step (14) is arranged at the bottom of the connecting hole (13), the end of the exhaust pipe (3) abuts against the limiting step (14), the outer surface of the end of the exhaust pipe (3) is in contact with a threaded groove (15) distributed along the connecting hole (13), and a plurality of gas discharge grooves (16) are formed in the connecting hole (13) and are in communication with the outlet end of the exhaust pipe (3) to form a gas discharge channel. The main body of the anti-lost fixing part (2) has an axial hole axially penetrating, and is sleeved on the exhaust pipe (3) through the axial hole, and the top edge of the anti-lost fixing part (2) is connected and fixed with the cap (12) of the plug cover body (1) through a connecting section (21).
2. The vent protection device for a hydrogen system of claim 1, wherein, The limiting step (14) extends from the inner side wall of the connecting hole (13) to the middle position of the connecting hole (13), and the end of the exhaust pipe (3) and the bottom surface of the connecting hole (13) have a gap for discharge.
3. The vent protection device for a hydrogen system of claim 2, wherein, The bottom of the gas discharge groove (16) is in communication with the gap, and the top of the gas discharge groove (16) extends to the end of the opening end of the connecting hole (13).
4. The vent protection device for a hydrogen system of claim 2, wherein, The limiting step (14) and the gas discharge groove (16) are arranged in a staggered manner and are uniformly distributed along the inner surface of the connecting hole (13).