CN204114436U - Sleeve expansion joint - Google Patents
Sleeve expansion joint Download PDFInfo
- Publication number
- CN204114436U CN204114436U CN201420520163.8U CN201420520163U CN204114436U CN 204114436 U CN204114436 U CN 204114436U CN 201420520163 U CN201420520163 U CN 201420520163U CN 204114436 U CN204114436 U CN 204114436U
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- CN
- China
- Prior art keywords
- outer tube
- interior pipe
- flange
- expansion joint
- covering
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model relates to a kind of expansion joint, particularly relate to a kind of sleeve expansion joint, it is not convenient that he overcomes the installation of conventional expanded joint, the shortcoming of the large and poor air-tightness of installing space, structure comprises outer tube, interior pipe, described outer tube sleeve is connected on outside interior pipe, also comprise covering, pipe adapter in the relative outer tube one end of described interior pipe is connected by No. one, flange, described outer tube mutually internal pipe one end is taken over by flange No. two connection outer tubes, described covering one end is fixedly connected with No. one, flange, and the other end is fixedly connected with No. two, flange, is provided with packing material in described covering.The beneficial effects of the utility model are easy to install and maintain, and tightness is good, and compensation effect is remarkable, and reliability is high.
Description
Technical field
The utility model relates to a kind of expansion joint, particularly relates to a kind of sleeve expansion joint.
Background technique
Expansion joint is used to absorb the device of pipeline because the reason such as to expand with heat and contract with cold causes and equipment size change, generally can be divided into type metal expansion joint, non-metal expansion joint.Type metal expansion joint the most common is bellows expansion joint, and it can only stretch along conduit axis direction, is difficult to the expanding needs meeting multiple directions.In addition, single bellows can only provide limited nose balance amount, if when swell increment is large, must be realized, therefore need enough installing spaces by multiple combined bellows.And non-metal expansion joint can provide the compensation rate of multiple directions on less axial mounting distance, but its nose balance amount is little, and cannot use in high temperature environments, and meanwhile, the direct contact corrosion medium of fabric, rubber material, affects working life.
Summary of the invention
For above-mentioned existing issue, the utility model aims to provide the sleeve expansion joint that a kind of installation and maintenance are convenient, high temperature resistant, compensation rate large, long service life, reliability are high.
The technological scheme solved the problems of the technologies described above is as follows:
A kind of sleeve expansion joint, comprise outer tube, interior pipe, described outer tube sleeve is connected on outside interior pipe, also comprise covering, pipe adapter in the relative outer tube one end of described interior pipe is connected by No. one, flange, internally pipe one end is by flange No. two connection outer tube adapters mutually for described outer tube, and described covering one end is fixedly connected with No. one, flange, the other end is fixedly connected with No. two, flange, is provided with packing material in described covering.
Further, gap is left between described interior pipe and outer tube.
Further, described packing material is aluminosilicate fiber cotton.
Further, the material that described interior pipe, outer tube, the adapter of interior pipe and outer tube are taken over is heat-resistance stainless steel.
Further, described interior pipe adapter is identical with interior pipe specification, and described outer tube adapter is identical with outer tube specification.
The beneficial effect that the utility model is new is as follows:
1. the setting of pipe and outer tube in, covering and packing material is avoided directly to contact high temperature corrosion medium, such as flue gas, flying dust etc., increase the service life, be applicable to the pipelines such as the flue under hot environment, ash tube, inner and outer tubes are made up of steel pipe, compared to the tube-in-tube structure be made up of steel plate simultaneously, reliability is higher, not easily temperature distortion;
2. in, pipe adapter and interior pipe and outer tube are taken over and are passed through Flange joint with outer tube, are conducive to the installation, maintenance of expansion joint;
3. covering is as the main telescopic body of non-metal expansion joint, both can absorb swell increment, can prevent dielectric leakage again, and the packing material of covering inside has high temperature resistant, heat insulation, telescopic function, effectively can reduce the vibration of tube wall;
4. covering two ends are connected with No. one, flange and No. two, flange respectively, make to change covering more convenient, in turn ensure that expansion joint tightness simultaneously, ensure the tightness of pipeline;
5. in, pipe is arranged with the gap between outer tube, for lateral displacement provides space, interior pipe, outer tube temperature distortion also can be prevented stuck;
6. compared with bellows expansion joint, sleeve expansion joint of the present utility model provides the installing space required for same axial compensation rate less, structure is more compact, medium first enters from interior pipe adapter, taken over by outer tube through interior pipe, outer tube again and discharge, high temperature corrosion medium can be avoided to be entered in covering by the gap between inner and outer pipe affects working life;
7. sleeve expansion joint of the present utility model is applicable to the pipeline of various sizes, shape, and structure is simple, and it is convenient to install, and compensation effect is remarkable, and processing technology is simple.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
As shown in Figure 1, a kind of sleeve expansion joint, comprises outer tube 3, interior pipe 2 and covering 5, and outer tube 3 is socketed in outside interior pipe 2, leaves gap between interior pipe 2 and outer tube 3.Outer tube 3 one end is by pipe adapter 1 in Flange joint relatively for interior pipe 2, and interior pipe adapter 1 specification is identical with interior pipe 2.Outer tube 3 mutually internal pipe 2 one end is by Flange joint outer tube adapter 4, and outer tube adapter 4 specification is identical with outer tube 3.The material of interior pipe 2, outer tube 3, interior pipe adapter 1 and outer tube adapter 4 is heat-resistance stainless steel.Covering 5 one end is clipped between two flanges of flange No. one 7, and is fixed by bolt and flange.The other end of covering 5 is clipped between two flanges of flange No. two 8, and is fixed by bolt and flange.Be provided with packing material 6 in covering 5, this packing material 6 is aluminosilicate fiber cotton.
During use, interior pipe adapter 1 is fixedly connected with the import of pipeline, outer tube adapter 4 is connected with the outlet of pipeline, make the medium in pipeline enter into outer tube 3 from interior pipe 2, then enter lower length of tubing.Such mounting type medium avoided in air-flow enters the situation damaging packing and covering in packing and occurs.
The operation changing covering 5 is separated with the bolts and nuts on flange No. two 8 by flange No. one 7, flange No. one 7 and flange No. two 8 are unclamped, extract bad covering 5 again out, new covering 5 is sandwiched in flange No. one 7 and flange No. two 8, finally by bolt tightening.
Claims (5)
1. a sleeve expansion joint, comprise outer tube (3), interior pipe (2), described outer tube (3) is socketed in interior pipe (2) outward, characterized by further comprising covering (5), described interior pipe (2) relatively outer tube (3) one end connects interior pipe adapter (1) by No. one, flange (7), described outer tube (3) is internally managed (2) one end mutually and is connected outer tube adapter (4) by No. two, flange (8), described covering (5) one end and flange No. one (7) are fixedly connected with, the other end and flange No. two (8) are fixedly connected with, and are provided with packing material (6) in described covering (5).
2. sleeve expansion joint according to claim 1, is characterized in that leaving gap between described interior pipe (2) and outer tube (3).
3. sleeve expansion joint according to claim 1, is characterized in that described packing material (6) is aluminosilicate fiber cotton.
4. sleeve expansion joint according to claim 1, it is characterized in that the material of (4) taken over by described interior pipe (2), outer tube (3), interior pipe adapter (1) and outer tube is heat-resistance stainless steel.
5. sleeve expansion joint according to claim 1, it is characterized in that described interior pipe adapter (1) is identical with interior pipe (2) specification, described outer tube adapter (4) is identical with outer tube (3) specification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420520163.8U CN204114436U (en) | 2014-09-11 | 2014-09-11 | Sleeve expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420520163.8U CN204114436U (en) | 2014-09-11 | 2014-09-11 | Sleeve expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204114436U true CN204114436U (en) | 2015-01-21 |
Family
ID=52331747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420520163.8U Active CN204114436U (en) | 2014-09-11 | 2014-09-11 | Sleeve expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204114436U (en) |
-
2014
- 2014-09-11 CN CN201420520163.8U patent/CN204114436U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |