Silicone tube fixing structure applied to fuel cell system pipeline

Abstract

The utility model belongs to the field of fuel cell pipeline fittings, and discloses a silicone tube fixing structure applied to a fuel cell system pipeline, which comprises a silicone tube and a joint, and more than two silicone tube bulge structures are arranged on the silicone tube; more than two bosses are arranged at each end part of the joint; the boss is clamped in the protruding structure of the silicone tube. The structure solves the problems that in the prior art, when a silicone tube is sleeved into a connector to be fixed, the sleeving distance and the releasing position of a hoop are difficult to accurately position, and pipeline leakage is easily caused.

Description

Technical Field

[0001] The utility model belongs to the field of fuel cell pipeline fittings, and relates to a fixing structure of a silica gel tube, in particular to a fixing structure of a silica gel tube applied to the pipeline of a fuel cell system. Background Technique

[0002] A hydrogen fuel cell is a power generation device that can directly convert the chemical energy of fuel into electrical energy without combustion, and has the advantages of high conversion efficiency, environmental friendliness, low noise, and fast start-up at low temperature. It has broad application prospects in the fields of automobiles, backup power supplies, etc.

[0003] A fuel cell system respectively has a hydrogen gas path subsystem, an air path subsystem, a cooling path subsystem, an electrical subsystem and other components. Among them, the connection between the hydrogen gas path subsystem, the air path subsystem and the cooling path subsystem is realized through a silica gel tube, and its main form is that the silica gel tube is sleeved into a joint, and a clamp is used to complete the locking.

[0004] At present, the connection between the silica gel tube and the joint is mainly realized in the form without a boss, as follows Figure 3 As shown. The disadvantages of this technology are as follows: Sometimes the length of the silica gel tube is too long, which is not conducive to mold forming and dimensional tolerance control. In this case, the pipeline connection is extended through the joint.

[0005] This process brings two problems at the same time. One is the splicing of the silica gel tube and the joint, and the total length tolerance changes from being controlled by one tube to being realized in the form of silica gel tube + joint + silica gel tube. In this design, since there is no boss at the connection position of the silica gel tube and the joint, when the clamp is used for locking, the contact surface between the silica gel tube and the joint is flat. When the vehicle is running, the fuel cell system will also be in a vibrating state. The silica gel tube and the joint may become loose due to insufficient friction force at the contact surface, resulting in leakage. In addition, the joint without a boss cannot realize the positioning of the insertion depth of the silica gel tube, and it may occur that one end is inserted deeply and the other end is not inserted deeply enough; moreover, it is very difficult for the assembler to intuitively judge whether the silica gel tube is assembled in place. If a single boss is designed at the position of the silica gel tube and the joint (as Figure 4 shown), in this form, the single boss is used in cooperation with the clamp to prevent the silica gel tube and the joint from becoming loose, which can basically solve the loosening defect of the above-mentioned structure without a boss and solve the risk of 50% insertion depth positioning. The insertion depth can be judged by observing the protrusion of the silica gel tube. For the judgment of the position of the single boss on the joint, we cannot accurately locate the actual position of the single boss on the joint only from the protrusion on the silica gel tube, because the hardness of the silica gel tube will affect the judgment of the boss position. In addition, the joint with a single boss structure also brings a risk. When the clamp is locked to the boss, the original sealing form between the silica gel tube and the joint changes from surface compression to line compression, greatly increasing the leakage risk. According to the actual measurement situation, almost 100% will leak.

[0006] Another problem is whether the release position of the clamp can be accurately in place to avoid being installed on the fixed boss position, thus affecting the airtightness. Summary of the Utility Model

[0007] The utility model overcomes the defects of the prior art and provides a silica gel tube fixing structure applied to the pipeline of a fuel cell system. This structure solves the problem that when the silica gel tube is sleeved into the joint for fixation in the prior art, it is very difficult to accurately locate the sleeved distance and the release position of the clamp, which easily causes pipeline leakage.

[0008] The technical solution of the utility model is as follows.

[0009] A silica gel tube fixing structure applied to the pipeline of a fuel cell system includes a silica gel tube and a joint. Two or more silica gel tube convex structures are arranged on the silica gel tube; two or more bosses are arranged at each end of the joint; the bosses are clamped in the silica gel tube convex structures.

[0010] Further preferably, the number of silica gel tube convex structures on the silica gel tube in the above structure is 2, which are respectively the first silica gel tube convex structure and the second silica gel tube convex structure.

[0011] Further preferably, 2 bosses are arranged at each end of the joint in the above structure, which are respectively the first boss and the second boss.

[0012] In the above structure, when the joint is sleeved in the silica gel tube, the first boss is clamped in the first silica gel tube convex structure, and the second boss is clamped in the second silica gel tube convex structure.

[0013] In the above structure, a third boss is arranged on the joint, and the third boss is located at the center position of the joint.

[0014] In the above structure, the cross-section of the third boss is larger than the cross-section of the silica gel tube.

[0015] In the above structure, a clamp is arranged between the two silica gel tube convex structures on the silica gel tube.

[0016] In the utility model, the problem of difficult installation and positioning of the fixed position and the risk of easy loosening are solved through an achievable process form. The clamp is fixed exactly in the middle between the first silica gel tube convex structure and the second silica gel tube convex structure on the silica gel tube, and this position is very easy to find, avoiding the risk of the clamp locking to the joint boss. The first silica gel tube convex structure can assist the clamp to prevent the silica gel tube and the joint from coming off. The second silica gel tube convex structure is mainly used to judge the locking position of the clamp. The third boss of the joint can realize the control of the sleeved depth of the silica gel tube.

[0017] Compared with the prior art, the advantages of the utility model are as follows:

[0018] 1. In the fixing structure of the present utility model, the first silicone tube convex structure on the silicone tube cooperates with the clamp to achieve anti-loosening.

[0019] 2. In the fixing form of the present utility model, the first silicone tube convex structure and the second silicone tube convex structure on the silicone tube are used to determine the locking position of the clamp.

[0020] 3. In the fixing form of the present utility model, the third boss controls the insertion depth of the silicone tube sleeve, ensuring effective contact of the silicone and avoiding leakage caused by insufficient insertion depth at one end. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the silicone tube fixing structure in the present utility model;

[0022] Figure 2 is a connection schematic diagram of the clamp in the present utility model;

[0023] Figure 3 is the structure of the prior art;

[0024] Figure 4 is a schematic diagram of the structure with a single boss.

[0025] Figure 1 and Figure 2 The names of each component in are as follows:

[0026] Silicone tube 1, first silicone tube convex structure 1.1, second silicone tube convex structure 1.2, joint 2, first boss 2.1, second boss 2.2, third boss 2.3, clamp 3. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following will illustrate the embodiments of the present utility model with reference to the drawings and preferred embodiments. Those skilled in the art can easily understand the other advantages and effects of the present utility model from the content disclosed in this specification. The present utility model can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present utility model. It should be understood that the preferred embodiments are only for illustrating the present utility model, rather than for limiting the protection scope of the present utility model.

[0028] In this embodiment, a silicone tube fixing structure applied to the pipeline of a fuel cell system is taken as an example of two sections of silicone tubes 1 and a joint 2 to explain the silicone tube fixing structure in the present utility model. Two silicone tube convex structures, namely the first silicone tube convex structure 1.1 and the second silicone tube convex structure 1.2, are provided at the end of each section of the silicone tube 1. Two bosses, namely the first boss 2.1 and the second boss 2.2, are provided at each end of the joint 2. As Figure 1As shown in the figure, when the joint 2 is sleeved inside the silicone tube 1, the first boss 2.1 is clamped inside the first silicone tube convex structure 1.1, and the second boss 2.2 is clamped inside the second silicone tube convex structure 1.2. This setting can effectively prevent the loosening between the silicone tube 1 and the joint 2. In this embodiment, the first silicone tube convex structure on the silicone tube cooperates with the clamp to achieve anti-loosening. The first silicone tube convex structure and the second silicone tube convex structure on the silicone tube determine the locking position of the clamp.

[0029] In this embodiment, a third boss 2.3 is provided on the joint 2, and the third boss 2.3 is located at the central position of the joint 2. The cross-section of the third boss 2.3 is larger than that of the silicone tube, and its function is to control the insertion depth of the silicone tube, ensure effective contact of the silicone, and avoid leakage caused by insufficient insertion depth at one end.

[0030] When it is necessary to fix the silicone tube 1 with the clamp 3, the clamp 3 is arranged between the two silicone tube convex structures on the silicone tube 1.

[0031] It should be noted that the number of the silicone tube convex structures and the bosses in this embodiment can be more than two, and the number can be increased according to the actual situation.

[0032] The above embodiments only illustratively explain the principles and effects of the present invention, rather than limiting the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A silica gel tube fixing structure applied to the pipeline of a fuel cell system, characterized in that It includes a silica gel tube (1) and a connector (2). Two or more silica gel tube convex structures are provided on the silica gel tube (1); two or more bosses are provided at each end of the connector (2); and the bosses are clamped in the silica gel tube convex structures.

2. The silicone tube fixing structure applied to the pipeline of the fuel cell system according to claim 1, characterized in that, The number of silica gel tube convex structures on the silica gel tube (1) is 2, namely a first silica gel tube convex structure (1.1) and a second silica gel tube convex structure (1.2).

3. The silicone tube fixing structure applied to the pipeline of the fuel cell system according to claim 1, characterized in that, Two bosses are provided at each end of the connector (2), namely a first boss (2.1) and a second boss (2.2).

4. The silicone tube fixing structure applied to the pipeline of the fuel cell system according to claim 3, characterized in that, When the connector (2) is sleeved in the silica gel tube (1), the first boss (2.1) is clamped in the first silica gel tube convex structure (1.1), and the second boss (2.2) is clamped in the second silica gel tube convex structure (1.2).

5. The silica gel tube fixing structure applied to the pipeline of a fuel cell system according to claim 1, wherein, A third boss (2.3) is provided on the connector (2), and the third boss (2.3) is located at the central position of the connector (2).

6. The silica gel tube fixing structure applied to the pipeline of the fuel cell system according to claim 5, wherein The cross-section of the third boss (2.3) is larger than the cross-section of the silica gel tube.

7. The silica gel tube fixing structure applied to the pipeline of the fuel cell system according to claim 1, characterized in that, A clamp (3) is provided between the two silica gel tube convex structures on the silica gel tube (1).

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