CN214535059U - Expansion joint, engine and automobile - Google Patents
Expansion joint, engine and automobile Download PDFInfo
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- CN214535059U CN214535059U CN202022897482.9U CN202022897482U CN214535059U CN 214535059 U CN214535059 U CN 214535059U CN 202022897482 U CN202022897482 U CN 202022897482U CN 214535059 U CN214535059 U CN 214535059U
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- expansion joint
- connecting end
- guide pipe
- corrugated part
- free end
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Abstract
The utility model relates to an expansion joint, which comprises a corrugated part, a first connecting end and a second connecting end, a first flow guide pipe and a second flow guide pipe, wherein the first connecting end and the second connecting end are positioned at two ends of the corrugated part; the free end of the second flow guide pipe extends into the inner cavity of the expansion joint from the second connecting end and is used for being welded with the pipeline corresponding to the second connecting end, and the second flow guide pipe is fixedly connected with the second connecting end; the free end of the first honeycomb duct and the free end of the second honeycomb duct are mutually nested, and the free ends are bent towards each other to form an installation cavity, and a flexible vibration damping ring is embedded in the installation cavity. The expansion joint can reduce the space occupied by the connection of the two ends of the expansion joint and the pipeline and can ensure the reliability of the connection of the expansion joint and the pipeline. The utility model also discloses an engine and car.
Description
Technical Field
The utility model relates to a pipeline connecting elements design production technical field, in particular to expansion joint, engine and car.
Background
The expansion joint is a part which contains one or more sections of corrugations and compensates the displacement (generated by assembly, thermal expansion and cooling and vibration) of a pipeline through the deformation of the corrugations under certain pressure or temperature.
To enable the deformation, the corrugations are usually made of a relatively thin material so as to be flexible, and to avoid damage to the corrugations, it is required that the two ends of the expansion joint be firmly fixed to the pipeline, and damage to the corrugations due to excessive relative vibration is avoided.
As shown in fig. 1, at present, both ends of the expansion joint are mainly fixedly connected with the pipeline through the mounting flanges 02, however, in some application occasions, there may be no fixing space on both sides of the expansion joint, which results in that the expansion joint with the mounting flanges 02 cannot be used; or the fixing space is available, but the mounting flange 02 and the pipeline cannot be firmly fixed, so that the corrugated part 01 of the expansion joint is easy to vibrate and damage.
Therefore, it is an urgent technical problem to provide an expansion joint which occupies a small space when both ends are fixed and can ensure the firm fixation with a pipeline.
SUMMERY OF THE UTILITY MODEL
One of the objects of the utility model is to provide an expansion joint to occupy the space as little as possible when can making the both ends of expansion joint fixed, and can effectively guarantee simultaneously that the both ends of expansion joint are firm fixed with the pipeline that corresponds.
Another object of the present invention is to provide an engine using the above expansion joint;
still another object of the present invention is to provide an automobile using the above engine.
In order to achieve the above object, the expansion joint provided by the present invention comprises a corrugated portion, and a first connecting end and a second connecting end respectively located at both ends of the corrugated portion and used for connecting with a pipeline, the expansion joint further comprises a first flow guide pipe and a second flow guide pipe extending into an inner cavity of the expansion joint, wherein,
the free end of the first flow guide pipe extends into the inner cavity of the expansion joint from the first connecting end and extends to the corrugated part, the first flow guide pipe is used for being welded and connected with a pipeline corresponding to the first connecting end of the corrugated part, and the first flow guide pipe is fixedly connected with the first connecting end of the corrugated part;
the free end of the second flow guide pipe extends into the inner cavity of the expansion joint from the second connecting end and extends to the corrugated part, the second flow guide pipe is used for being welded and connected with a pipeline corresponding to the second connecting end of the corrugated part, and the second flow guide pipe is fixedly connected with the second connecting end of the corrugated part;
the free end of the first flow guide pipe and the free end of the second flow guide pipe are mutually nested and are bent towards each other to form an installation cavity, and a flexible vibration damping ring is embedded in the installation cavity.
Preferably, the first guide pipe is connected with the first connecting end of the corrugated portion in a welding mode, and the second guide pipe is connected with the second connecting end of the corrugated portion in a welding mode.
Preferably, the diameters of the first draft tube and the second draft tube are equal, a closing part is arranged at the free end of the first draft tube, and the closing part is embedded into the free end of the second draft tube.
Preferably, the closing-in portion includes a conical contraction section and a straight wall section connected to the conical contraction section, and a generatrix of the straight wall section is parallel to a generatrix of a tube wall of the second flow guide tube.
Preferably, the corrugated portion has a cylindrical structure.
Preferably, the first draft tube and the second draft tube are fabricated from 304 stainless steel.
Preferably, the flexible damping ring is formed from a stack of 304 stainless steel wires.
Preferably, the corrugated portion is made of stainless steel.
The utility model discloses an engine, including intake pipe and blast pipe, and the intake pipe and/or be provided with the expansion joint disclosed in above-mentioned arbitrary one on the blast pipe.
The utility model discloses in still disclose an automobile to this automobile is provided with above-mentioned engine.
In the expansion joint disclosed in the embodiment of the utility model, the two ends of the corrugated part are respectively a first connecting end and a second connecting end, and a first flow guide pipe and a second flow guide pipe are further arranged in the first connecting end and the second connecting end, the first connecting end is fixedly connected with the first flow guide pipe, the second connecting end is fixedly connected with the second flow guide pipe, the first flow guide pipe is used for welding and connecting with a pipeline corresponding to the first connecting end of the corrugated part, the second flow guide pipe is used for welding and connecting with a pipeline corresponding to the second connecting end of the corrugated part, the free end of the first flow guide pipe and the free end of the second flow guide pipe are mutually nested and are bent towards each other to form an installation cavity, a flexible damping ring is embedded in the installation cavity, when the corrugated part generates axial deformation, the installation cavity correspondingly increases or reduces, and the flexible damping ring can consume the vibration when the corrugated part generates deformation through self deformation, and the vibration reduction effect is realized.
It can be seen that, the utility model discloses an expansion joint links to each other with the pipeline welding at both ends through first honeycomb duct and second honeycomb duct, and the welding links to each other and does not have great connection structure, therefore can effectively reduce the shared space when expansion joint both ends link to each other with the pipeline, and the welding links to each other simultaneously can also effectively guarantee expansion joint both ends and tube coupling's firm nature to effectively avoid the expansion joint to take place to damage because of the vibration is too big.
Drawings
FIG. 1 is a schematic diagram of a prior art expansion joint;
fig. 2 is a schematic structural view of an expansion joint disclosed in an embodiment of the present invention.
Wherein, 1 is the first honeycomb duct, 2 is the flexible damping circle, 3 is the second honeycomb duct, 4 is the ripple part.
Detailed Description
One of the cores of the utility model is to provide an expansion joint so that occupy the space as little as possible when the both ends that can make the expansion joint are fixed, and can effectively guarantee that the both ends of expansion joint are firm fixed with the pipeline that corresponds simultaneously.
The other core of the utility model is to provide an engine adopting the expansion joint;
the utility model discloses a still another core lies in providing the car that adopts above-mentioned engine.
Referring to fig. 2, the expansion joint disclosed in the embodiment of the present invention includes a corrugated portion 4, wherein two ends of the corrugated portion 4 are a first connecting end and a second connecting end for connecting to pipelines at two ends of the expansion joint, and in addition, the expansion joint further includes a first flow guide tube 1 and a second flow guide tube 3 extending into an inner cavity of the expansion joint; wherein the content of the first and second substances,
the free end of the first draft tube 1 extends into the inner cavity of the expansion joint from the first connecting end and extends to the corrugated part 4, as shown in fig. 2, the first draft tube 1 is used for being welded and connected with a pipeline corresponding to the first connecting end of the corrugated part 4, and the first draft tube 1 is fixedly connected with the first connecting end of the corrugated part 4;
the free end of the second guide pipe 3 extends into the inner cavity of the expansion joint from the second connecting end and extends to the corrugated part 4, the second guide pipe is used for being welded and connected with a pipeline corresponding to the second connecting end of the corrugated part 4, and the second guide pipe 3 is fixedly connected with the second connecting end of the corrugated part 4;
the free end of the first honeycomb duct 1 and the free end of the second honeycomb duct 3 are mutually nested, and are bent towards each other to form an installation cavity, and a flexible damping ring 2 is embedded in the installation cavity.
Referring to fig. 2, the expansion joint in the above embodiment is welded to the pipelines at both ends through the first flow guide tube 1 and the second flow guide tube 3, and there is no large-sized connection structure in the welded connection, so that the space occupied by the connection between the two ends of the expansion joint and the pipelines can be effectively reduced by adopting the welded connection; meanwhile, the welding connection can also effectively ensure the reliability of the connection between the two ends of the expansion joint and the pipeline, thereby effectively avoiding the damage of the expansion joint caused by overlarge vibration.
When the pipelines at the two ends of the expansion joint expand with heat and contract with cold, the first guide pipe 1 and the second guide pipe 3 can move relatively, so that the corrugated part 4 can be ensured to be stretched normally; when the corrugated part 4 generates telescopic motion, the size of the installation cavity can be changed, the flexible vibration damping ring 2 in the installation cavity can also deform, and the energy generated by the vibration of pipelines at two ends of the expansion joint can be consumed when the flexible vibration damping ring deforms, so that an excellent vibration damping effect is achieved, and the vibration impact on the corrugated part 4 is reduced; meanwhile, the first guide pipe 1 and the second guide pipe 3 form sealing on the corrugated part to a certain degree, and particularly when the temperature of fluid in the pipeline is high, the structure can reduce the temperature of the corrugated part to a certain degree, so that the working reliability of the expansion joint is improved.
Can adopt connecting piece (like bolt or screw) to link to each other between the first link of first honeycomb duct 1 and corrugated part 4 and between the second link of second honeycomb duct 3 and corrugated part 4, also can adopt the welding to link to each other, the utility model discloses in the preferred adoption welding of expansion joint link to each other.
Referring to fig. 2, in the present embodiment, the diameters of the first draft tube 1 and the second draft tube 3 are equal, and the free end of the first draft tube 1 is provided with a closing portion, which is embedded into the free end of the second draft tube 3; more specifically, the closing-in portion includes a conical contraction section and a straight wall section connected with the conical contraction section, and a generatrix of the straight wall section is parallel to a generatrix of the tube wall of the second flow guide tube 3.
It will be understood by those skilled in the art that the overall shape of the bellows portion 4 is not limited and may be a cylindrical shape or a polygonal shape, and the bellows portion 4 in the expansion joint in the present embodiment has a cylindrical structure in consideration of convenience in design, manufacture, and installation.
In the present embodiment, the first draft tube 1 and the second draft tube 3 are made of 304 stainless steel (06Cr19Ni 10); the flexible damping ring 2 is formed by a stack of 304 stainless steel (06Cr19Ni10) wires; the corrugated portion 4 is made of stainless steel; depending on the temperature, the bellows portion 4 may be made of 0Cr18Ni12Mo3Ti, 06Cr17Ni12Mo2Ti, 0Cr18Ni10Ti, 06Cr18Ni11Ti, 16Cr23Ni13, or may be made of an alloy material such as NS1101 or NS 3306. Of course, the above materials are some materials for manufacturing each component, and it should be understood that the expansion joint may be manufactured by replacing other materials for each component according to different use requirements.
In addition, the utility model discloses in still disclose an engine, this engine includes intake pipe and blast pipe to still be provided with the expansion joint disclosed in the arbitrary embodiment of above-mentioned on intake pipe and/or the blast pipe.
Since the expansion joint disclosed in the above embodiment is adopted, the engine has the corresponding technical advantages of the expansion joint, and those skilled in the art can understand the embodiment with reference to the technical advantages of the expansion joint in the above embodiment, which is not described herein again.
The utility model discloses in still disclose an automobile including above-mentioned engine, owing to adopted above-mentioned engine, this automobile possesses above-mentioned engine and the corresponding technical advantage of expansion joint equally, and this is not repeated here again.
It is right above that the utility model provides an expansion joint, engine and car have carried out detailed introduction. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (10)
1. An expansion joint comprises a corrugated part (4), a first connecting end and a second connecting end which are respectively positioned at two ends of the corrugated part (4) and are used for connecting with a pipeline, and is characterized by also comprising a first guide pipe (1) and a second guide pipe (3) which extend into an inner cavity of the expansion joint, wherein,
the free end of the first guide pipe (1) extends into the inner cavity of the expansion joint from the first connecting end and extends to the corrugated part (4), the first guide pipe (1) is used for being connected with a pipeline corresponding to the first connecting end of the corrugated part (4) in a welding mode, and the first guide pipe (1) is fixedly connected with the first connecting end of the corrugated part (4);
the free end of the second guide pipe (3) extends into the inner cavity of the expansion joint from the second connecting end and extends to the corrugated part (4), the second guide pipe (3) is used for being connected with a pipeline corresponding to the second connecting end of the corrugated part (4) in a welding mode, and the second guide pipe (3) is fixedly connected with the second connecting end of the corrugated part (4);
the free end of the first honeycomb duct (1) and the free end of the second honeycomb duct (3) are mutually nested and are bent towards each other to form an installation cavity, and a flexible vibration damping ring (2) is embedded in the installation cavity.
2. Expansion joint according to claim 1, characterized in that the first duct (1) is welded to the first connecting end of the corrugated portion (4) and the second duct (3) is welded to the second connecting end of the corrugated portion (4).
3. Expansion joint according to claim 1, characterized in that the first duct (1) and the second duct (3) have the same diameter and the free end of the first duct (1) is provided with a mouth that is embedded in the free end of the second duct (3).
4. An expansion joint according to claim 3, characterized in that the mouth-piece comprises a conical constriction and a straight wall section connected to the conical constriction, the generatrix of the straight wall section being parallel to the generatrix of the wall of the second draft tube (3).
5. An expansion joint according to any of claims 1-4, characterized in that the bellows (4) is of cylindrical construction.
6. Expansion joint according to claim 1, characterized in that the first (1) and second (3) draft tubes are manufactured from 304 stainless steel.
7. An expansion joint according to claim 1, characterized in that the flexible damping ring (2) is formed by a stack of 304 stainless steel wires.
8. Expansion joint according to claim 1, characterized in that the corrugated portion (4) is made of stainless steel.
9. An engine comprising an inlet line and an outlet line, characterized in that the inlet line and/or the outlet line is provided with an expansion joint according to any one of claims 1-8.
10. A vehicle, characterized in that the vehicle comprises an engine according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022897482.9U CN214535059U (en) | 2020-12-03 | 2020-12-03 | Expansion joint, engine and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022897482.9U CN214535059U (en) | 2020-12-03 | 2020-12-03 | Expansion joint, engine and automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214535059U true CN214535059U (en) | 2021-10-29 |
Family
ID=78290520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022897482.9U Active CN214535059U (en) | 2020-12-03 | 2020-12-03 | Expansion joint, engine and automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214535059U (en) |
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2020
- 2020-12-03 CN CN202022897482.9U patent/CN214535059U/en active Active
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