CN213360196U - Corrugated pipe structure with multiple corrosion-resistant layers - Google Patents
Corrugated pipe structure with multiple corrosion-resistant layers Download PDFInfo
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- CN213360196U CN213360196U CN202022172342.5U CN202022172342U CN213360196U CN 213360196 U CN213360196 U CN 213360196U CN 202022172342 U CN202022172342 U CN 202022172342U CN 213360196 U CN213360196 U CN 213360196U
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Abstract
The utility model discloses a multilayer corrosion-resistant layer corrugated pipe structure, the corrugated pipe comprises a corrugated section and horizontal connecting parts arranged at two ends of the corrugated section, the corrugated section is of a double-layer structure and comprises an outer corrosion-resistant material layer and an inner corrosion-resistant material layer; a first corrosion-resistant spraying layer is sprayed on the inner side of the outer corrosion-resistant material layer; and a second corrosion-resistant spraying layer is sprayed on the inner side of the inner corrosion-resistant material layer. The utility model has the advantages of reasonable structure, good corrosion resistance, reliable performance and the like.
Description
Technical Field
The utility model relates to an engine accessory assembly technical field especially relates to multilayer corrosion-resistant layer bellows structure.
Background
The vortex rear connecting pipe is an important connecting structure of a compression ignition type engine and a spark ignition type engine, is generally arranged between an engine exhaust pipe and a silencer or a postprocessor, and is also arranged between split type and sectional type postprocessors, so that the vortex rear connecting pipe is changeable and flexible in shape, an exhaust silencing system of a passenger car, a commercial car and an engineering car is convenient to arrange, the space of the whole car is utilized more efficiently, and the diversion effect of high-temperature gas is borne. According to the space condition and the application field of the whole vehicle, the vortex rear pipe can adopt a cast pipeline, a welded steel pipe, a corrugated pipe, a reducing pipeline, a conformal pipeline and the like. The welded corrugated pipe is widely applied, but the welded corrugated pipe structure is designed aiming at high temperature, corrosive tail gas, urea mixed gas (the tail gas and urea solution are subjected to chemical reaction, and harmful pollutant emission is reduced) and the like without pertinence at present, and an inner gas layer conduit is unreasonable in design, so that corrosive gas flows back and impacts, the corrugated pipe is corroded, high-temperature gas is leaked, and the fire danger of the whole vehicle is caused; meanwhile, the tail gas leakage leads to the increase of the noise of the whole vehicle, and untreated gas is discharged to pollute the environment.
The above background disclosure is only provided to aid in understanding the concepts and technical solutions of the present invention, and it does not necessarily belong to the prior art of the present patent application, and it should not be used to assess the novelty and inventive step of the present application without explicit evidence that the above content has been disclosed at the filing date of the present patent application.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a corrosion-resistant, long service life, safe and reliable's bellows structure.
Therefore, the utility model provides a multilayer corrosion-resistant layer bellows structure
Preferably, the present invention may also have the following technical features:
the corrugated pipe comprises a corrugated section and horizontal connecting parts arranged at two ends of the corrugated section, wherein the corrugated section is of a double-layer structure and comprises an outer corrosion-resistant material layer and an inner corrosion-resistant material layer; a first corrosion-resistant spraying layer is sprayed on the inner side of the outer corrosion-resistant material layer; and a second corrosion-resistant spraying layer is sprayed on the inner side of the inner corrosion-resistant material layer.
Further, the outer corrosion-resistant material layer and the inner corrosion-resistant material layer are made of the same material.
Further, the inner corrosion-resistant material layer is one of chrome-nickel alloy, nickel-base alloy and nickel-copper alloy.
Further, the outer layer corrosion-resistant material layer is made of one of chrome-nickel alloy, nickel-base alloy and nickel-copper alloy.
Furthermore, the connecting parts at the two ends of the corrugated pipe are respectively communicated with an air outlet pipe and an air inlet pipe and are welded and sealed, a gas guide pipe is further arranged inside the corrugated pipe, the air inlet end of the gas guide pipe is welded and sealed with the air inlet pipe, and the air outlet end extends to the inside of the air outlet pipe along the axial direction of the corrugated pipe and is arranged in a hanging manner; the gas guide pipe is of a structure that the gas inlet end is gradually reduced towards the gas outlet end.
Further, the spraying material of the first corrosion-resistant spraying layer and the second corrosion-resistant spraying layer is ceramic or alloy or fluoroplastic.
The utility model discloses beneficial effect with the prior art contrast includes: design multilayer corrosion-resistant layer to reduce corrosive gas and hoard the hidden danger that causes the bellows section to corrode the leakage at the bellows section cavity, promote the reliability and the life of overall design scheme, reduce hidden danger and the environmental pollution of starting a fire that gas leakage leads to, furthest's protection personal and property safety and atmospheric environment.
Drawings
Fig. 1 is an assembly view of the present invention.
Fig. 2 is a partial cross-sectional view of a corrugated section of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following embodiments. It should be emphasized that the following description is merely exemplary in nature and is not intended to limit the scope of the invention or its application.
Non-limiting and non-exclusive embodiments will be described with reference to the following figures, wherein like reference numerals refer to like parts, unless otherwise specified.
The multi-layer corrosion-resistant layer corrugated pipe structure shown in fig. 1-2 includes a corrugated section 41 and horizontal connection portions (42,43) provided at both ends of the corrugated section 41. The corrugated section 41 has a double-layer structure including an outer corrosion-resistant material layer 8 and an inner corrosion-resistant material layer 10. A first corrosion-resistant spraying layer 9 is sprayed on the inner side of the outer corrosion-resistant material layer 8; the inner side (the side opposite to the gas conduit 5) of the inner layer corrosion resistant material layer 10 is sprayed with a second corrosion resistant sprayed layer 11. Preferably, the material of the inner and outer corrosion-resistant material layers is one of chrome-nickel alloy, nickel-based alloy and nickel-copper alloy or one of chrome-nickel alloy, nickel-nickel alloy and nickel-copper alloy which are respectively selected. And spraying ceramic or alloy or oxide or fluoroplastic and other spraying layers on the inner side surfaces of the outer layer corrosion-resistant material layer and the inner layer corrosion-resistant material layer by adopting plasma spraying.
The right end connecting part 42 of the corrugated pipe 4 is welded and sealed with the gas outlet pipe 6, and the left end connecting part 43 is welded and sealed with the outer side of the gas inlet end 3 of the gas guide pipe 5; the gas guide pipe 5 is arranged inside the corrugated pipe 4, the inner side of the gas inlet end 3 of the gas guide pipe is welded and sealed with the gas inlet pipe 1, and the gas outlet end 7 extends to the inside of the gas outlet pipe 6 along the axial direction of the corrugated pipe 4 and is arranged in a suspended manner; the gas conduit 5 is of a structure that the gas inlet end 3 is gradually reduced towards the gas outlet end 7. The inner side of the corrugated pipe 4, the outer side of the gas guide pipe 5 and the gas outlet pipe enclose a cavity 2.
Those skilled in the art will recognize that numerous variations are possible in light of the above description, and therefore the examples and drawings are merely intended to describe one or more specific embodiments.
While there has been described and illustrated what are considered to be example embodiments of the present invention, it will be understood by those skilled in the art that various changes and substitutions can be made therein without departing from the spirit of the invention. In addition, many modifications may be made to adapt a particular situation to the teachings of the present invention without departing from the central concept described herein. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but may include all embodiments and equivalents falling within the scope of the present invention.
Claims (6)
1. Multilayer corrosion-resistant layer bellows structure, the bellows includes the ripple section and establishes the horizontal joint portion at ripple section both ends, its characterized in that: the corrugated section is of a double-layer structure and comprises an outer corrosion-resistant material layer and an inner corrosion-resistant material layer; a first corrosion-resistant spraying layer is sprayed on the inner side of the outer corrosion-resistant material layer; and a second corrosion-resistant spraying layer is sprayed on the inner side of the inner corrosion-resistant material layer.
2. The multilayer corrosion resistant corrugated pipe structure of claim 1, wherein: the outer layer corrosion-resistant material layer and the inner layer corrosion-resistant material layer are made of the same material.
3. The multilayer corrosion resistant corrugated pipe structure of claim 1, wherein: the inner corrosion-resistant material layer is one of chromium-nickel alloy, nickel-based alloy and nickel-copper alloy.
4. The multilayer corrosion resistant corrugated pipe structure of claim 1, wherein: the outer corrosion-resistant material layer is made of one of chromium-nickel alloy, nickel-based alloy and nickel-copper alloy.
5. The multilayer corrosion resistant corrugated pipe structure of claim 1, wherein: the connecting parts at two ends of the corrugated pipe are respectively communicated with an air outlet pipe and an air inlet pipe and are welded and sealed, a gas guide pipe is also arranged in the corrugated pipe, the air inlet end of the gas guide pipe is welded and sealed with the air inlet pipe, and the air outlet end extends to the interior of the air outlet pipe along the axial direction of the corrugated pipe and is arranged in a hanging manner; the gas guide pipe is of a structure that the gas inlet end is gradually reduced towards the gas outlet end.
6. The multilayer corrosion resistant corrugated pipe structure of claim 1, wherein: the spraying materials of the first corrosion-resistant spraying layer and the second corrosion-resistant spraying layer are ceramics, alloys or fluoroplastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022172342.5U CN213360196U (en) | 2020-09-28 | 2020-09-28 | Corrugated pipe structure with multiple corrosion-resistant layers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022172342.5U CN213360196U (en) | 2020-09-28 | 2020-09-28 | Corrugated pipe structure with multiple corrosion-resistant layers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213360196U true CN213360196U (en) | 2021-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022172342.5U Active CN213360196U (en) | 2020-09-28 | 2020-09-28 | Corrugated pipe structure with multiple corrosion-resistant layers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213360196U (en) |
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2020
- 2020-09-28 CN CN202022172342.5U patent/CN213360196U/en active Active
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