CN202521137U - Metal bellows expansion joint - Google Patents
Metal bellows expansion joint Download PDFInfo
- Publication number
- CN202521137U CN202521137U CN 201220128111 CN201220128111U CN202521137U CN 202521137 U CN202521137 U CN 202521137U CN 201220128111 CN201220128111 CN 201220128111 CN 201220128111 U CN201220128111 U CN 201220128111U CN 202521137 U CN202521137 U CN 202521137U
- Authority
- CN
- China
- Prior art keywords
- expansion joint
- metal
- bellows
- isolating material
- heat isolating
- 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.)
- Expired - Fee Related
Links
- 239000002184 metal Substances 0.000 title claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 24
- 238000006073 displacement reaction Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 230000004323 axial length Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
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Abstract
The utility model discloses a metal bellows expansion joint comprising two end tubes and a bellows which is connected between the two end tubes; a heat isolating material is filled in the bellows; and a first metal wire mesh is coated outside the heat isolating material. A heat isolating material filling port is arranged on the bellows, and a second metal wire mesh is arranged outside the heat isolating material filling port. The metal bellows expansion joint also comprises a metal pull rod which is arranged and is fixedly connected between the two end tubes. The metal pull rod and the end tubes are in threaded connection. According to the metal bellows expansion joint, because the first metal wire mesh is coated outside the heat isolating material and the second metal wire mesh is arranged at the heat isolating material filling port, the heat isolating material can be effectively prevented from falling off. A metal ring is arranged between the two end tubes, so that permissible compensation quantity is not exceeded, and displacement and deformation during a transportation process can be prevented.
Description
Technical field
The utility model relates to a kind of expansion joint, relates in particular to a kind of metal corrugated pipe expansion joint.
Background technique
The additional stress that expansion joint causes because of temperature difference and mechanical vibration for compensation, and be arranged on a kind of flexible structure on container shell or the pipeline.Because it is as a kind of elastic compensating element that can freely stretch, advantages such as reliable operation, functional, compact structure have been widely used in departments such as chemical industry, metallurgy, nuclear energy.Expansion joint also is slip joint traditionally; Or corrugated expansion joint; Be that effective dilatation in order to the elastic element that utilizes corrugated expansion joint absorbs pipeline, conduit or the container a kind of compensation device by former thereby the dimensional changes that produces such as expand with heat and contract with cold, belong to a kind of compensating element.Can be to axially, laterally and the absorption of angular displacement, be used for adding thermal walking, mechanical displacement absorbed oscillation, reduce noise etc. in pipeline, equipment and system.The additional stress that expansion joint causes because of temperature difference and mechanical vibration for compensation, and be arranged on a kind of flexible structure on container shell or the pipeline.Because it is as a kind of elastic compensating element that can freely stretch, advantages such as reliable operation, functional, compact structure have been widely used in departments such as chemical industry, metallurgy, nuclear energy.The expansion joint that on container, adopts has various ways, with regard to the shape of ripple, uses the most extensively with the U-shaped expansion joint, secondly also has Ω shape and C shape etc.And the expansion joint that on pipeline, adopts has universal, pressure balance type, hinge type and universal joint formula etc. again with regard to structure compensation.Bellows expansion joint is a kind of expansion joint of processing with metal bellows.It can be flexible along axial direction, also allows a small amount of crooked.Fig. 2 is common axial type bellows expansion joint, is used in to carry out the axial length compensation on the pipeline.But the thermal-protective material generality in the bellows expansion joint is insecure, comes off easily.
The model utility content
The utility model technical problem to be solved is the deficiency to above-mentioned existing technology, provides a kind of and can effectively prevent the metal corrugated pipe expansion joint that thermal-protective material comes off.
For solving the problems of the technologies described above, the technological scheme that the utility model is taked is: a kind of metal corrugated pipe expansion joint, and comprise two end pipes and be connected two bellowss between the end pipe, be filled with thermal-protective material in the said bellows; It is characterized in that: be coated with first wire gaze in said thermal-protective material outside.
As the further improved technological scheme of the utility model, said bellows is provided with thermal-protective material and fills mouth, outside thermal-protective material is filled mouth, second wire gaze is installed.
As the further improved technological scheme of the utility model, also comprise metal pull bar, affiliated metal pull bar is fixedly connected between two end pipes.
As the further improved technological scheme of the utility model, be connected for thread type between said metal pull bar and the end pipe.
The utility model is filled a mouthful place at thermal-protective material second wire gaze is set through coating first wire gaze in the thermal-protective material outside, can prevent effectively that thermal-protective material from coming off.Between the pipe of two ends, be provided with metal and draw, can prevent to surpass the compensation rate that allows, also can prevent displacement and distortion in transportation process.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Further specify below in conjunction with the embodiment of accompanying drawing the utility model.
Embodiment
Referring to Fig. 1, this metal bellows expansion joint comprises two end pipes 3 and is connected two bellowss 4 between the end pipe 3, is filled with thermal-protective material in the said bellows 4; Be coated with first wire gaze 2 in said thermal-protective material outside.Said bellows 4 is provided with thermal-protective material and fills mouth 5, fills mouthful 5 places at thermal-protective material second wire gaze 1 is installed.Also comprise metal pull bar 6, said metal pull bar 6 is fixedly connected between two end pipes 3.Between two ends pipe 3, be provided with metal pull bar, can prevent to surpass the compensation rate that allows, also can prevent displacement and distortion in transportation process.Be connected for thread type between said metal pull bar 6 and the end pipe 3.The axial length of thread type free adjusting bellows easy to connect.
Claims (4)
1. a metal corrugated pipe expansion joint comprises two end pipes (3) and is connected the bellows (4) between two end pipes (3), and said bellows is filled with thermal-protective material in (4); It is characterized in that: be coated with first wire gaze (2) in said thermal-protective material outside.
2. metal corrugated pipe expansion joint according to claim 1 is characterized in that: said bellows (4) is provided with thermal-protective material and fills mouthful (5), fills mouthful (5) at thermal-protective material and locates to be equipped with second wire gaze (1).
3. metal corrugated pipe expansion joint according to claim 1 and 2 is characterized in that: also comprise metal pull bar (6), affiliated metal pull bar (6) is fixedly connected between two end pipes (3).
4. metal corrugated pipe expansion joint according to claim 3 is characterized in that: said metal pull bar (6) is managed between (3) with end and is connected for thread type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220128111 CN202521137U (en) | 2012-03-30 | 2012-03-30 | Metal bellows expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220128111 CN202521137U (en) | 2012-03-30 | 2012-03-30 | Metal bellows expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202521137U true CN202521137U (en) | 2012-11-07 |
Family
ID=47104089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220128111 Expired - Fee Related CN202521137U (en) | 2012-03-30 | 2012-03-30 | Metal bellows expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202521137U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102661467A (en) * | 2012-03-30 | 2012-09-12 | 南通三创机械制造有限公司 | Metal corrugated pipe expansion joint |
-
2012
- 2012-03-30 CN CN 201220128111 patent/CN202521137U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102661467A (en) * | 2012-03-30 | 2012-09-12 | 南通三创机械制造有限公司 | Metal corrugated pipe expansion joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20130330 |