Vulcanized pipe joint with anti-falling structure

Abstract

The utility model discloses a vulcanized pipe joint with an anti-drop structure, which comprises a metal pipe, a rubber layer is sleeved outside the metal pipe, a plurality of first grooves are arranged on the outer wall surface of the metal pipe, a plurality of second grooves are arranged on the two end surfaces of the metal pipe, and when the rubber layer wraps the metal pipe, the second grooves are arranged on the two end surfaces of the metal pipe. A first protrusion and a second protrusion which are matched in shape are arranged at the positions, attached to the first groove and the second groove in the metal pipe, of the rubber layer. The first groove and the first protrusion are matched to axially position the rubber layer, the second groove and the second protrusion are matched to circumferentially position the rubber layer, so that the rubber layer and the metal pipe are connected more firmly, the rubber layer and the metal pipe can still be tightly adhered even in a high-temperature gas working environment, and the rubber layer and the metal pipe can not be damaged under the impact of gas flow. And the rubber layer cannot be separated from the metal pipe, so that the air leakage fault caused by blow-broken rubber after separation is avoided, and the position of a vulcanized pipe joint used by an engine after-pressing pipeline is compacted.

Description

Technical Field

[0001] The utility model belongs to the technical field of engine compressor pipe joints, and particularly relates to a vulcanized pipe joint with an anti - detachment structure. Background Technique

[0002] The statements here only provide the background technique related to the utility model, and do not necessarily constitute the prior art.

[0003] In modern automotive engineering, the combined use of a turbocharger and an intercooler has greatly improved the efficiency and performance of the engine. A turbocharger is a device used to increase the intake air volume of the engine. It utilizes the waste gas energy in the engine exhaust pipe to drive a turbine, which is connected to a compressor. When the turbine rotates, the compressor also rotates, compressing more air and sending it into the engine combustion chamber. In this way, the engine can burn more fuel and thus generate greater power. During the turbocharging process, the temperature of the air increases after being compressed. The density of hot air is relatively low, which is not conducive to the combustion efficiency. At this time, the role of the intercooler becomes particularly important. An intercooler is a heat exchanger whose function is to cool the compressed air, thereby increasing the air density and enhancing the combustion efficiency of the engine.

[0004] Since the air temperature is relatively high after being compressed by the compressor, if a pipeline is directly used to connect the outlet of the compressor to the inlet of the intercooler, although this method is simple and convenient and does not require additional interface fittings. However, the high - temperature gas discharged from the compressor is likely to cause the pipeline to deform, resulting in unstable connection and easy leakage. In the prior art, a vulcanized pipe joint is usually used to connect the compressor and the intercooler. The inner layer of the vulcanized pipe joint is a metal pipe, and the outer layer is rubber. The rubber is adhered to the metal pipe through an adhesive. As Figure 1 shown, in order to prevent the end of the metal pipe from colliding with the connecting pipelines on both sides after the vulcanized pipe joint is skewed, a protruding structure is designed on the rubber at the end position. During the use of the existing vulcanized pipe joint, the high - temperature gas continuously impacts the protruding position of the rubber at the end of the vulcanized pipe joint, resulting in the gradual separation of the rubber from the metal matrix, and the rubber is gradually blown out, ultimately leading to air leakage. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a vulcanized pipe joint with an anti - detachment structure. Through the provided anti - detachment structure, even in a high - temperature gas working environment, the rubber layer and the metal pipe can still be tightly adhered. Under the impact of the air flow, the rubber layer will not detach from the metal pipe, avoiding the air leakage failure caused by the rubber being blown out after detachment.

[0006] In order to achieve the above purpose, the utility model is realized through the following technical solutions:

[0007] In a first aspect, an embodiment of the present utility model provides a vulcanized pipe joint with an anti - detachment structure, which includes a metal pipe. A rubber layer is sleeved outside the metal pipe. A plurality of first grooves are provided on the outer wall surface of the metal pipe, and a plurality of second grooves are provided on both end surfaces of the metal pipe. When the rubber layer wraps the metal pipe, first protrusions and second protrusions with matching shapes are provided at positions on the rubber layer that fit the first grooves and second grooves on the metal pipe. The first grooves and the first protrusions cooperate to axially position the rubber layer, and the second grooves and the second protrusions cooperate to circumferentially position it.

[0008] As a further technical solution, the first groove is an annular groove, and a plurality of first grooves are spaced at a set distance axially and are arranged in parallel on the outer wall surface of the metal pipe.

[0009] As a further technical solution, the first protrusion is an annular protrusion, and a plurality of first protrusions are spaced at a set distance axially and are arranged in parallel on the inner wall surface of the rubber layer.

[0010] As a further technical solution, the second groove is a circular groove, and a plurality of second grooves are evenly formed on the end surface of the metal pipe.

[0011] As a further technical solution, both ends of the rubber layer are in an L - shaped structure, and the end surfaces of both ends of the rubber layer cover the end surfaces of both ends of the metal pipe.

[0012] As a further technical solution, the second protrusion is a circular protrusion, and a plurality of second protrusions are evenly arranged at the positions where the L - shaped end surface of the rubber layer fits the end surface of the metal pipe.

[0013] As a further technical solution, annular protruding structures are provided at both ends of the outer wall surface of the rubber layer.

[0014] As a further technical solution, the rubber layer is covered on the outer wall surface and both end surfaces of the metal pipe by a vulcanization process.

[0015] As a further technical solution, during the vulcanization process, the rubber fills the first groove and forms the first protrusion on the rubber layer.

[0016] As a further technical solution, during the vulcanization process, the rubber fills the second groove and forms the second protrusion on the rubber layer.

[0017] The beneficial effects of the above - mentioned embodiments of the present utility model are as follows:

[0018] The vulcanized pipe joint with an anti - detachment structure provided by the present utility model forms an anti - detachment structure through the cooperation of the first groove and the first protrusion, and the cooperation of the second groove and the second protrusion. The cooperation of the first groove and the first protrusion axially positions the rubber layer, and the cooperation of the second groove and the second protrusion circumferentially positions it, making the connection between the rubber layer and the metal pipe more firm. Even in a high - temperature gas working environment, the rubber layer and the metal pipe can still be closely adhered. Under the impact of air flow, the rubber layer will not detach from the metal pipe, avoiding the air leakage failure caused by the rubber being blown and broken after detachment, and playing a role in compacting the position where the vulcanized pipe joint is used in the engine's post - compression pipeline.

[0019] The vulcanized pipe joint with an anti - detachment structure provided by the present utility model has a rubber layer wrapped around the outer surface of the metal pipe by vulcanization process. During the vulcanization process, the rubber filling can fill the first groove and the second groove on the metal pipe. Compared with the existing connection method where the rubber layer and the metal pipe are only adhesively connected, the structure is more firm, and the rubber layer does not separate from the metal pipe under the impact of high - temperature air flow, improving the service life of the vulcanized pipe joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The attached drawings forming a part of this utility model are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model.

[0021] Figure 1 is a cross - sectional view of the vulcanized pipe joint in the prior art;

[0022] Figure 2 is a cross - sectional view of the vulcanized pipe joint with an anti - detachment structure of the present utility model;

[0023] Figure 3 is a schematic structural view of the metal pipe of the present utility model;

[0024] Figure 4 is a schematic structural view of the rubber layer of the present utility model;

[0025] Figure 5 is a cross - sectional view of the rubber layer of the present utility model.

[0026] The schematic diagrams are for illustrative purposes only;

[0027] Among them, 1. Metal pipe; 101. First groove; 102. Second groove; 2. Rubber layer; 201. First protrusion; 202. Second protrusion; 203. Protrusion structure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present utility model. Unless otherwise specified, all technical and scientific terms used in the present utility model have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs.

[0029] Embodiment 1

[0030] In a typical implementation manner of the present utility model, as Figure 2-5 shown, a vulcanized pipe joint with an anti - detachment structure is provided, including a metal pipe 1. A rubber layer 2 is sleeved outside the metal pipe 1. A plurality of first grooves 101 are arranged on the outer wall surface of the metal pipe 1, and a plurality of second grooves 102 are arranged on both end faces of the metal pipe 1. When the rubber layer 2 wraps the metal pipe 1, first protrusions 201 and second protrusions 202 with matching shapes are arranged at positions on the rubber layer 2 that fit the first grooves 101 and second grooves 102 on the metal pipe 1. The first grooves 101 and the first protrusions 201 cooperate to axially position the rubber layer 2, and the second grooves 102 and the second protrusions 202 cooperate to circumferentially position it.

[0031] In this embodiment, the first groove 101 is an annular groove, and a plurality of first grooves 101 are spaced at a set distance axially and are arranged in parallel on the outer wall surface of the metal pipe 1.

[0032] In this embodiment, the first protrusion 201 is an annular protrusion, and a plurality of first protrusions 201 are spaced at a set distance axially and are arranged in parallel on the inner wall surface of the rubber layer 2.

[0033] The first protrusion 201 of the rubber layer 2 is engaged in the first groove 101 of the metal pipe 1, which plays a role in axially limiting the rubber layer 2, so that the rubber layer 2 will not fall off the metal pipe 1.

[0034] In this embodiment, the second groove 102 is a circular groove, and a plurality of second grooves 102 are evenly opened on the end face of the metal pipe 1.

[0035] In this embodiment, both ends of the rubber layer 2 are in an L - shaped structure, and both end faces of the rubber layer 2 cover both end faces of the metal pipe 1. Further, the second protrusion 202 is a circular protrusion, and a plurality of second protrusions 202 are evenly arranged at the position where the L - shaped end face of the rubber layer 2 fits the end face of the metal pipe 1.

[0036] The second protrusion 202 of the rubber layer 2 is engaged in the second groove 201 of the metal pipe 1, which plays a role in axially limiting the rubber layer, so that the rubber layer 2 will not rotate relative to the metal pipe 1.

[0037] In this embodiment, annular protruding structures 203 are provided at both ends of the outer wall surface of the rubber layer 2, which can prevent the end of the metal pipe from colliding with the connecting pipelines on both sides after the vulcanized pipe joint is skewed.

[0038] In this embodiment, the rubber layer 2 is covered on the outer wall surface and both end faces of the metal pipe 1 by vulcanization. During the vulcanization process, the rubber fills the first groove 101 to form the first protrusion 201 on the rubber layer 2, the rubber fills the second groove 102 to form the second protrusion 203 on the rubber layer, and the end rubber fills in the second groove 102, making the rubber structure at the end of the rubber layer more firm.

[0039] For the vulcanized pipe joint with an anti - detachment structure provided in this embodiment, the cooperation between the first groove 101 and the first protrusion 201, and the cooperation between the second groove 102 and the second protrusion 202 form an anti - detachment structure. The cooperation between the first groove 101 and the first protrusion 201 axially positions the rubber layer 2, and the cooperation between the second groove 102 and the second protrusion 202 circumferentially positions it, making the connection between the rubber layer 2 and the metal pipe 1 more firm. Even in a high - temperature gas working environment, the rubber layer and the metal pipe can still be closely adhered. Under the impact of air flow, the rubber layer will not detach from the metal pipe, avoiding the air leakage failure caused by the rubber being blown and broken after detachment, and playing a role in making the position of the vulcanized pipe joint used in the engine post - compression pipeline more compact.

[0040] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A vulcanized pipe joint with an anti - detachment structure, characterized in that, It includes a metal pipe, with a rubber layer sleeved outside the metal pipe. A plurality of first grooves are provided on the outer wall surface of the metal pipe, and a plurality of second grooves are provided on both end faces of the metal pipe. When the rubber layer wraps the metal pipe, first protrusions and second protrusions with matching shapes are provided at positions on the rubber layer that fit the first grooves and second grooves on the metal pipe. The first grooves and the first protrusions cooperate to axially position the rubber layer, and the second grooves and the second protrusions cooperate to circumferentially position.

2. The vulcanized pipe joint with an anti-loosening structure according to claim 1, characterized in that, The first grooves are annular grooves, and a plurality of first grooves are axially spaced apart by a set distance and are parallelly arranged on the outer wall surface of the metal pipe.

3. The vulcanized pipe joint with an anti-loosening structure according to claim 2, wherein, The first protrusions are annular protrusions, and a plurality of first protrusions are axially spaced apart by a set distance and are parallelly arranged on the inner wall surface of the rubber layer.

4. The vulcanized pipe joint with an anti - detachment structure according to claim 1, characterized in that, The second grooves are circular grooves, and a plurality of second grooves are evenly opened on the end faces of the metal pipe.

5. The vulcanized pipe joint with an anti-loosening structure according to claim 4, characterized in that, Both ends of the rubber layer are in an L-shaped structure, and the end faces of both ends of the rubber layer cover the end faces of both ends of the metal pipe.

6. The vulcanized pipe joint with an anti-loosening structure as described in claim 5, wherein The second protrusions are circular protrusions, and a plurality of second protrusions are evenly arranged at positions where the L-shaped end face of the rubber layer fits the end face of the metal pipe.

7. The vulcanized pipe joint with an anti - detachment structure according to claim 1, characterized in that, Annular protruding structures are provided at both ends of the outer wall surface of the rubber layer.

8. The vulcanized pipe joint with an anti - detachment structure according to claim 1, characterized in that, The rubber layer is covered on the outer wall surface and both end faces of the metal pipe by a vulcanization process.

9. The vulcanized pipe joint with an anti-loosening structure according to claim 8, characterized in that, During the vulcanization process, the rubber fills the first grooves and forms the first protrusions on the rubber layer.

10. The vulcanized pipe joint with an anti - detachment structure as claimed in claim 8, wherein, During the vulcanization process, the rubber fills the second grooves and forms the second protrusions on the rubber layer.

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