CN220415505U - Composite corrugated pipe for engine exhaust - Google Patents
Composite corrugated pipe for engine exhaust Download PDFInfo
- Publication number
- CN220415505U CN220415505U CN202322070336.2U CN202322070336U CN220415505U CN 220415505 U CN220415505 U CN 220415505U CN 202322070336 U CN202322070336 U CN 202322070336U CN 220415505 U CN220415505 U CN 220415505U
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- CN
- China
- Prior art keywords
- corrugated pipe
- net sleeve
- engine exhaust
- expansion joint
- main body
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- 239000002131 composite material Substances 0.000 title claims abstract description 19
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 10
- 239000010935 stainless steel Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 claims description 8
- 230000001681 protective effect Effects 0.000 claims description 7
- 239000010963 304 stainless steel Substances 0.000 claims description 5
- 239000002356 single layer Substances 0.000 claims description 4
- 239000010410 layer Substances 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims 1
- 230000008602 contraction Effects 0.000 claims 1
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000013016 damping Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009661 fatigue test Methods 0.000 description 1
- 230000030279 gene silencing Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Landscapes
- Exhaust Silencers (AREA)
Abstract
The utility model belongs to the technical field of automobile accessories, in particular to a composite corrugated pipe for engine exhaust, which comprises a corrugated pipe main body, an expansion joint and a net sleeve; the corrugated pipe comprises a corrugated pipe body, wherein two ends of the corrugated pipe body are respectively provided with an air inlet seat and an air outlet seat, the inner side wall of the corrugated pipe body is provided with an expansion joint, the outer side wall of the corrugated pipe body is provided with a net sleeve, gaps are reserved among the corrugated pipe body, the expansion joint and the net sleeve to prevent mutual friction damage and form a sealing heat-insulating layer, two sides of the corrugated pipe body, the expansion joint and the net sleeve are provided with protection brackets, and the joint between the protection brackets and two ends of the net sleeve is provided with a retainer; the corrugated pipe has reasonable structure, and solves the problems of low stretching rate, high weight, high cost, low fatigue resistance, short service life and the like caused by the corrugated pipe shape structure in the prior art.
Description
Technical Field
The utility model relates to the technical field of automobile accessories, in particular to a composite corrugated pipe for engine exhaust.
Background
The automobile exhaust corrugated pipe is also called an automobile exhaust pipe hose, and is arranged in an exhaust system between an engine exhaust pipe and aftertreatment, so that the whole exhaust system is flexibly connected and used for compensating displacement and isolating vibration between the engine and the aftertreatment, and meanwhile, the automobile exhaust corrugated pipe has the functions of reducing exhaust temperature loss, avoiding leakage, reducing vibration and noise, facilitating installation and prolonging service life of the exhaust silencing system. The structure is that a single SS shrinkage joint and an annular corrugated pipe are covered with a steel wire mesh sleeve, and two straight edge sections of the two ends are sleeved with snap rings. Material quality: the main material is stainless steel SUS304, and the cutting ferrule and the connecting tube can be made of stainless steel or common low-carbon steel. The structure has strong flexibility and is widely applied.
At present, the corrugated pipe installed on the automobile has a damping function due to the fact that the corrugated pipe is provided with the corrugated hose and the stainless steel net sleeve, but in a long-term working state of an engine, the corrugated hose is broken due to long-term shock absorption and deformation of the corrugated hose, and the service life of the corrugated pipe is shortened.
The existing exhaust corrugated pipe structure for the vehicle has the following defects: when the airflow reaches a certain pressure and flow rate in the use process, obvious noise can be generated. In addition, when the exhaust temperature is relatively high, combustion waste gas directly washes the inner surface of the corrugated pipe, and the temperature rise is obvious in a short time due to the fact that the material is thinner, so that the problem of premature burning through and cracking is caused.
At present, manufacturers at home and abroad adopt structures such as U-shaped corrugated pipes, 2S winding pipes, 3S winding pipes and the like. With the development of the automobile market, higher requirements are put forward on the fracture rate, high flexibility, assembly efficiency, cost reduction and synergy of the device, and popularization and implementation of national VII emission standards, the structure gradually shows the defects, and the efficiency of treating the automobile exhaust is low.
Accordingly, in view of the above, an improvement has been made in view of the conventional structure and drawbacks, and a composite bellows for engine exhaust is provided.
Disclosure of Invention
This section is intended to outline some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description summary and in the title of the application, to avoid obscuring the purpose of this section, the description summary and the title of the utility model, which should not be used to limit the scope of the utility model.
The present utility model has been made in view of the problems occurring in the prior art.
Therefore, the utility model aims to provide the composite corrugated pipe for engine exhaust, which solves the problems of low stretching rate, high weight, high cost, low fatigue resistance, short service life and the like caused by the corrugated pipe shape structure in the prior art.
In order to solve the technical problems, according to one aspect of the present utility model, the following technical solutions are provided:
a composite corrugated pipe for engine exhaust comprises a corrugated pipe main body, an expansion joint and a net sleeve;
wherein,
the corrugated pipe comprises a corrugated pipe body, and is characterized in that an air inlet seat and an air outlet seat are respectively arranged at two ends of the corrugated pipe body, an expansion joint is arranged on the inner side wall of the corrugated pipe body, a net sleeve is arranged on the outer side wall of the corrugated pipe body, gaps are reserved among the corrugated pipe body, the expansion joint and the net sleeve to prevent mutual friction and damage, a sealing heat preservation layer is formed, protective brackets are arranged on two sides of the corrugated pipe body, the expansion joint and the net sleeve, and guard rings are arranged at the joints of the protective brackets and two ends of the net sleeve.
As a preferable embodiment of the composite bellows for engine exhaust according to the present utility model, wherein: the air inlet seat and the air outlet seat are made of 304 stainless steel pipes.
As a preferable embodiment of the composite bellows for engine exhaust according to the present utility model, wherein: the protective bracket and the guard ring are formed by one-step stamping of stainless steel plates.
As a preferable embodiment of the composite bellows for engine exhaust according to the present utility model, wherein: the telescopic joint is of a single-layer SS structure and has the thickness of 0.13mm.
As a preferable embodiment of the composite bellows for engine exhaust according to the present utility model, wherein: the corrugated pipe body is a tubular element formed by connecting a plurality of transverse corrugations along the expansion direction, is formed by processing and welding 304 steel belts in a wave shape, the inner diameter of the corrugated pipe is 123mm, the wave height is 16.25mm, the curvature radius of the wave trough is 3mm, the material thickness is 0.23mm, and the wave number is 31 waves.
As a preferable embodiment of the composite bellows for engine exhaust according to the present utility model, wherein: the net sleeve is a multi-strand 72-spindle 8-strand woven stainless steel woven twill net made of 304 stainless steel.
Compared with the prior art, the utility model has the beneficial effects that: the corrugated pipe structure solves the problems of low stretching rate, high weight, high cost, low fatigue resistance, short service life and the like caused by the corrugated pipe shape structure in the prior art, accords with the national VII emission standard, and has the advantages of light weight, low cost, high expansion rate, long service life, high fatigue resistance, high temperature resistance, high air tightness, high corrosion resistance and obvious damping and noise absorption effects.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following detailed description of the embodiments of the present utility model will be given with reference to the accompanying drawings, which are to be understood as merely some embodiments of the present utility model, and from which other drawings can be obtained by those skilled in the art without inventive faculty. Wherein:
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of the telescopic joint structure of the present utility model;
FIG. 3 is a schematic view of the main structure of the bellows of the present utility model;
fig. 4 is a schematic diagram of the structure of the net cover of the present utility model.
In the figure; 1 air inlet seat, 2 protective bracket, 3 guard ring, 4 expansion joint, 5 bellows main body, 6 net cover, 7 air outlet seat.
Detailed Description
In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present utility model is not limited to the specific embodiments disclosed below.
Next, the present utility model will be described in detail with reference to the drawings, wherein the sectional view of the device structure is not partially enlarged to general scale for the convenience of description, and the drawings are only examples, which should not limit the scope of the present utility model. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings.
The utility model provides the following technical scheme: the composite corrugated pipe for engine exhaust solves the problems of low stretching rate, high weight, high cost, low fatigue resistance, short service life and the like caused by the shape and the structure of the corrugated pipe in the prior art;
fig. 1 to 4 are schematic structural views showing an embodiment of a composite bellows for engine exhaust according to the present utility model, the main body portion of which includes a bellows main body 5, an expansion joint 4 and a mesh 6;
please refer again to fig. 1-4: the two ends of the corrugated pipe main body 5 are respectively provided with an air inlet seat 1 and an air outlet seat 7, the inner side wall of the corrugated pipe main body 5 is provided with an expansion joint 4, the outer side wall of the corrugated pipe main body 5 is provided with a net sleeve 6, the corrugated pipe main body 5 is protected from being damaged by stones, stretching is limited, and the expansion joint 4 is protected; gaps are reserved among the corrugated pipe main body 5, the expansion joint 4 and the net sleeve 6 to prevent mutual friction and damage and form a sealing heat-insulating layer, the bearing temperature is high, noise and vibration of an engine are filtered, the two sides of the corrugated pipe main body 5, the expansion joint 4 and the net sleeve 6 are provided with protection brackets 2, and the joints of the protection brackets 2 and the two ends of the net sleeve 6 are provided with guard rings 3;
please refer again to fig. 1-4: the materials of the air inlet seat 1 and the air outlet seat 7 are 304 stainless steel pipes;
please refer again to fig. 1-4: stainless steel plates are selected for the protective bracket 2 and the guard ring 3 to be formed by one-step stamping;
please refer again to fig. 1-4: the telescopic joint 4 is of a single-layer SS structure, the amplitude of the single-layer SS structure is small, the resistance of tail gas passing through can be effectively reduced, the high-temperature tail gas of the engine passes through a sufficient thermal expansion space, and the pipe body cannot be hardened. The weight of the whole structure is reduced, the cost is reduced, the thickness of the material is 0.13mm, the vibration of equipment is absorbed, the expansion compensation amount is large, the bearing temperature is high, and the bearing pressure is large;
please refer again to fig. 1-4: the corrugated pipe body 5 is a tubular element formed by connecting a plurality of transverse corrugations along the expansion direction, the corrugated pipe body is formed by processing and welding 304 steel belts in a wave form, the inner diameter of the corrugated pipe is 123mm, the wave height is 16.25mm, the curvature radius of the trough is 3mm, the material thickness is 0.23mm, the structural pipe wall is composed of different arc sections, as the deformation of each wave is larger, a certain amount of wave numbers can ensure the stretching rate, the corrugated pipe body has good flexibility, displacement compensation can be carried out in any direction of the pipe body, the corrugated pipe body is light in weight, the corrugated pipe body 5 is obtained through fatigue test, the expansion rate achieved by the wave number of the corrugated pipe body 5 is not easy to damage when the wave number is 31, but the shape strength of the corrugated pipe body 5 is not large enough, the collision capability is not strong, the protective net sleeve 6 is needed to be added, the corrugated pipe body has good expansion, heat resistance, pressure resistance and corrosion resistance, the noise and vibration of an engine can be greatly absorbed, the effects of vibration reduction are achieved, the continuous damping vibration reduction and the probability of resonance with the engine is greatly reduced;
please refer again to fig. 1-4: the net sleeve 6 is a stainless steel woven twill net woven by a plurality of 72-strand 8-strand woven stainless steel, has good elasticity, can be large and small, has good protectiveness, corrosion resistance and wear resistance, improves the bearing performance of a pipe body, resists high temperature, prolongs the service life of the pipe body, reduces the cost, has good collision performance, can effectively resist splashed sand, slurry and other foreign matters, and protects the structure of the corrugated pipe body 5.
Working principle: in the use process of the utility model, the problems of low stretching rate, high weight, high cost, low fatigue resistance, short service life and the like caused by the corrugated pipe shape structure in the prior art are solved, the utility model meets the national VII emission standard, and has the advantages of light weight, low cost, high stretching rate, long service life, high fatigue resistance, high temperature resistance, high air tightness, high corrosion resistance and obvious effects of shock absorption and noise absorption.
Although the utility model has been described hereinabove with reference to embodiments, various modifications thereof may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. In particular, the features of the disclosed embodiments may be combined with each other in any manner as long as there is no structural conflict, and the exhaustive description of these combinations is not given in this specification merely for the sake of omitting the descriptions and saving resources. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.
Claims (6)
1. The utility model provides a compound bellows for engine exhaust which characterized in that: comprises a corrugated pipe main body (5), an expansion joint (4) and a net sleeve (6);
wherein,
the novel corrugated pipe is characterized in that an air inlet seat (1) and an air outlet seat (7) are respectively arranged at two ends of a corrugated pipe main body (5), an expansion joint (4) is arranged on the inner side wall of the corrugated pipe main body (5), a net sleeve (6) is arranged on the outer side wall of the corrugated pipe main body (5), gaps are reserved among the corrugated pipe main body (5), the expansion joint (4) and the net sleeve (6) to prevent mutual friction damage and form a sealing heat preservation layer, a protection support (2) is arranged at two sides of the corrugated pipe main body (5), the expansion joint (4) and the net sleeve (6), and a retainer (3) is arranged at the joint of the protection support (2) and two ends of the net sleeve (6).
2. A composite bellows for engine exhaust according to claim 1, characterized in that: the materials of the air inlet seat (1) and the air outlet seat (7) are 304 stainless steel pipes.
3. A composite bellows for engine exhaust according to claim 1, characterized in that: the protective bracket (2) and the guard ring (3) are formed by one-step stamping of stainless steel plates.
4. A composite bellows for engine exhaust according to claim 1, characterized in that: the telescopic joint (4) is of a single-layer SS structure and has the thickness of 0.13mm.
5. A composite bellows for engine exhaust according to claim 1, characterized in that: the corrugated pipe body (5) is a tubular element formed by connecting a plurality of transverse corrugations along the expansion and contraction direction, is formed by processing and welding 304 steel belts in a wave shape, the inner diameter of the corrugated pipe is 123mm, the wave height is 16.25mm, the curvature radius of the trough is 3mm, the thickness of the material is 0.23mm, and the wave number is 31 waves.
6. A composite bellows for engine exhaust according to claim 1, characterized in that: the net sleeve (6) is a multi-strand 72-spindle 8-strand woven stainless steel woven twill net made of 304 stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322070336.2U CN220415505U (en) | 2023-08-03 | 2023-08-03 | Composite corrugated pipe for engine exhaust |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322070336.2U CN220415505U (en) | 2023-08-03 | 2023-08-03 | Composite corrugated pipe for engine exhaust |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220415505U true CN220415505U (en) | 2024-01-30 |
Family
ID=89643189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322070336.2U Active CN220415505U (en) | 2023-08-03 | 2023-08-03 | Composite corrugated pipe for engine exhaust |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220415505U (en) |
-
2023
- 2023-08-03 CN CN202322070336.2U patent/CN220415505U/en active Active
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| GR01 | Patent grant |