Pipeline connection structure of fuel cell heat dissipation system and fuel cell automobile

Abstract

The utility model discloses a pipeline connection structure of a fuel cell heat dissipation system, which belongs to the technical field of pipeline connection structures of new energy automobile heat dissipation systems and comprises a mounting plate and a plurality of pipe joints. The plurality of pipe joints are vertically arranged on the mounting plate in a penetrating manner; annular flange connecting parts are fixedly arranged on the outer walls of the pipe joints; the flange connecting part is positioned above the mounting plate, and the flange connecting part is riveted with the mounting plate through a plurality of first rivets. According to the utility model, the flange connecting part riveted with the mounting plate is arranged on the outer wall of the pipe joint, so that the connecting stability of the pipe joint and the mounting plate can be further improved, the pipe joint is not easy to loosen, and the problem of poor sealing performance of the whole vehicle caused by loosening of the pipe joint is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline connection structures of a heat dissipation system of a new energy vehicle, and in particular to a pipeline connection structure of a heat dissipation system of a fuel cell and a fuel cell vehicle. Background Art

[0002] The existing fuel cell buses using hydrogen as energy have a compact rear compartment space, but the radiator of the fuel cell is large, so the radiator is usually arranged on the roof of the vehicle in the prior art.

[0003] In order to solve the problem of poor sealing of the whole vehicle due to the large number of connecting pipes of the fuel cell radiator and the need to open many holes on the roof. The Chinese patent document with the announcement number CN212979862U discloses a transition device for the cooling pipes of the roof and the rear cabin of a fuel cell bus, including a mounting plate and a plurality of pipe joints vertically bonded to the mounting plate by sealants. Although the above-mentioned transition device can avoid the problems of water leakage and pipe wear caused by the pipes directly passing through the roof skin, the sealant is not heat-resistant and cold-resistant. Only by using sealants to bond the pipe joints to the perforated inner wall of the mounting plate, the reliability of the connection between the pipe joints and the mounting plate cannot be ensured, and the problem of poor sealing of the whole vehicle caused by the loosening of the pipe joints may occur.

[0004] Therefore, the prior art still needs to be improved and developed. Utility Model Content

[0005] The technical problem to be solved by the utility model is that, in view of the above-mentioned defects of the prior art, a pipe connection structure of a fuel cell cooling system is provided, which aims to solve the problem that only by using sealant to bond the pipe joint to the perforated inner wall of the mounting plate, the reliability of the connection between the pipe joint and the mounting plate cannot be ensured, and the pipe joint is prone to loosening, resulting in poor sealing of the entire vehicle.

[0006] The technical solution adopted by the utility model to solve the technical problem is as follows:

[0007] A pipeline connection structure of a fuel cell cooling system comprises a mounting plate and a plurality of pipe joints; the plurality of pipe joints are vertically penetrated through the mounting plate; an annular flange connection portion is fixedly provided on the outer wall of each pipe joint; the flange connection portion is located above the mounting plate, and the flange connection portion is riveted to the mounting plate through a plurality of first rivets; a first sealant layer is filled between the mounting plate and the flange connection portion.

[0008] Furthermore, the mounting plate is provided with a plurality of through holes suitable for the pipe joints to pass through; a second sealing adhesive layer is filled between the inner walls of the through holes and the pipe joints.

[0009] Furthermore, the mounting plate is riveted to the roof skin via a plurality of second rivets.

[0010] Furthermore, a third sealant layer is filled between the mounting plate and the roof skin.

[0011] Furthermore, the pipe joints include at least two main water pipe joints, at least one water supply pipe joint and at least two degassing pipe joints.

[0012] Furthermore, the pipeline connection structure of the fuel cell cooling system also includes a throat clamp; the throat clamp is used to fix the main water pipe, the water supply pipe and the degassing pipe on the corresponding pipe joints.

[0013] Furthermore, the first sealant layer and the second sealant layer are both glass glue layers.

[0014] Furthermore, the third sealing adhesive layer is a glass adhesive layer.

[0015] The utility model also provides a fuel cell vehicle, comprising the pipeline connection structure of the fuel cell cooling system.

[0016] Beneficial effects:

[0017] The utility model provides a pipe connection structure for a fuel cell cooling system. By arranging a flange connection portion riveted to a mounting plate on the outer wall of the pipe joint, the connection stability between the pipe joint and the mounting plate can be further improved, so that the pipe joint is not easy to loosen, and the problem of poor sealing of the entire vehicle caused by loose pipe joints will not occur. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the piping connection structure of the fuel cell cooling system installed on the roof skin.

[0019] Figure 2 yes Figure 1 Enlarged view of part A.

[0020] Figure 3 It is a schematic diagram of the piping connection structure of the fuel cell cooling system.

[0021] Description of reference numerals:

[0022] 1-mounting plate; 2-main water pipe joint; 3-water supply pipe joint; 4-degassing pipe joint; 5-flange connection; 6-roof skin; 7-second rivet; 8-throat clamp; 9-first rivet. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model clearer and more specific, the utility model is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0024] like Figures 1 to 3 As shown, the utility model provides a pipeline connection structure of a fuel cell cooling system, including a mounting plate 1 and a plurality of pipe joints.

[0025] Wherein, the mounting plate 1 is mounted on the upper part of the roof skin 6. A plurality of the pipe joints are vertically penetrated on the mounting plate 1. In order to firmly mount the pipe joint on the mounting plate 1, an annular flange connection portion 5 is fixedly provided on the outer wall of the pipe joint (the flange connection portion 5 can be welded to the outer wall of the pipe joint by welding). The flange connection portion 5 is located above the mounting plate 1, and the flange connection portion 5 is riveted to the mounting plate 1 through a plurality of first rivets 9. Since riveting has the advantage of making the structural connection more reliable, the flange connection portion 5 is provided on the outer wall of the pipe joint, and the flange connection portion 5 is riveted to the mounting plate 1, which can further improve the connection stability between the pipe joint and the mounting plate 1, so that the pipe joint is not easy to loosen, and there will be no problem of poor sealing of the whole vehicle caused by the loosening of the pipe joint.

[0026] Furthermore, a first sealant layer (not shown in the drawings) is filled between the mounting plate 1 and the flange connection portion 5. By filling the gap between the mounting plate 1 and the flange connection portion 5 with the first sealant layer, the sealing of the vehicle can be further enhanced to prevent water leakage.

[0027] Furthermore, the mounting plate 1 is provided with a plurality of through holes suitable for the pipe joint to pass through; a second sealant layer (not shown in the drawings) is filled between the inner wall of the through hole and the pipe joint. The second sealant layer itself can play a role in bonding the pipe joint and the inner wall of the through hole, and combined with the riveting of the flange connection part 5 and the mounting plate 1, the connection stability between the pipe joint and the mounting plate 1 is further improved.

[0028] Furthermore, the mounting plate 1 is riveted to the roof skin 6 by a plurality of second rivets 7. Compared with the conventional method in which the mounting plate 1 is bonded to the roof skin 6 by a sealant, when the mounting plate 1 is riveted to the roof skin 6 by the second rivets 7, the connection between the mounting plate 1 and the roof skin 6 is more reliable and will not be loosened, thereby further improving the sealing performance of the entire vehicle.

[0029] Furthermore, a third sealant layer (not shown in the drawings) is filled between the mounting plate 1 and the roof skin 6. The third sealant layer is an existing setting, and the third sealant layer is retained so that it can cooperate with the second rivet 7 in the riveting manner during the service life, so that the connection stability between the mounting plate 1 and the roof skin 6 is further improved.

[0030] Furthermore, the pipe joints include at least two main water pipe joints 2, at least one water supply pipe joint 3 and at least two degassing pipe joints 4. The pipeline connection structure of the fuel cell cooling system also includes a throat clamp 8; the throat clamp 8 is used to fix the main water pipe, the water supply pipe and the degassing pipe on the corresponding pipe joints.

[0031] When the main water pipe, water supply pipe and degassing pipe need to be replaced, it is only necessary to loosen the throat clamp 8 to separate the pipeline from the pipe joint. There is no need to remove the pipeline connection structure provided by the utility model from the roof skin 6, so the replacement of the pipeline saves time and effort.

[0032] Furthermore, the first sealant layer, the second sealant layer and the third sealant layer can all be glass glue layers. Glass glue has a longer service life than other types of sealants and can play a role in preventing water leakage for a long time.

[0033] The utility model also provides a fuel cell vehicle, comprising the pipeline connection structure of the fuel cell cooling system.

[0034] To sum up, the utility model can further improve the connection stability between the pipe joint and the mounting plate by arranging a flange connection portion riveted to the mounting plate on the outer wall of the pipe joint, so that the pipe joint is not easy to loosen, and the problem of poor sealing of the whole vehicle caused by loose pipe joint will not occur.

[0035] It should be understood that the application of the present invention is not limited to the above examples. For ordinary technicians in this field, improvements or changes can be made according to the above description. All these improvements and changes should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A pipe connection structure of a fuel cell cooling system, comprising a mounting plate and a plurality of pipe joints; the plurality of pipe joints are vertically penetrated on the mounting plate; characterized in that: An annular flange connection portion is fixedly provided on the outer wall of the pipe joint; the flange connection portion is located above the mounting plate, and the flange connection portion is riveted to the mounting plate through a plurality of first rivets.

2. The pipeline connection structure of the fuel cell cooling system according to claim 1, characterized in that: A first sealing adhesive layer is filled between the mounting plate and the flange connection portion.

3. The pipeline connection structure of the fuel cell cooling system according to claim 2, characterized in that: The mounting plate is provided with a plurality of through holes suitable for the pipe joints to pass through; a second sealing adhesive layer is filled between the inner walls of the through holes and the pipe joints.

4. The pipeline connection structure of the fuel cell cooling system according to claim 1, characterized in that: The mounting plate is riveted to the roof skin via a plurality of second rivets.

5. The pipeline connection structure of the fuel cell cooling system according to claim 4, characterized in that: A third sealant layer is filled between the mounting plate and the roof skin.

6. The pipeline connection structure of the fuel cell cooling system according to claim 1, characterized in that: The pipe joints include at least two main water pipe joints, at least one water supply pipe joint and at least two degassing pipe joints.

7. The pipeline connection structure of the fuel cell cooling system according to claim 6, characterized in that: It also includes a throat clamp, which is used to fix the main water pipe, the water supply pipe and the degassing pipe on the corresponding pipe joints.

8. The pipeline connection structure of the fuel cell cooling system according to claim 3, characterized in that: The first sealant layer and the second sealant layer are both glass sealant layers.

9. The pipeline connection structure of the fuel cell cooling system according to claim 5, characterized in that: The third sealing adhesive layer is a glass adhesive layer.

10. A fuel cell vehicle, characterized in that: A pipeline connection structure comprising a fuel cell heat dissipation system as described in any one of claims 1 to 9.

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