CN202252575U - Expansion joint for pipeline - Google Patents
Expansion joint for pipeline Download PDFInfo
- Publication number
- CN202252575U CN202252575U CN2011203588820U CN201120358882U CN202252575U CN 202252575 U CN202252575 U CN 202252575U CN 2011203588820 U CN2011203588820 U CN 2011203588820U CN 201120358882 U CN201120358882 U CN 201120358882U CN 202252575 U CN202252575 U CN 202252575U
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- CN
- China
- Prior art keywords
- pipeline
- ring
- fixing
- seal
- expansion joint
- 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
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Abstract
The utility model relates to an expansion joint for a pipeline. The expansion joint for the pipeline comprises a pipeline fixing device and a pipeline sealing device, wherein the pipeline fixing device comprises an upper fixing ring for fixing an upper pipeline and a lower fixing ring for fixing a lower pipeline; the upper fixing ring is connected with the lower fixing ring through a double-screw bolt; and the pipeline sealing device comprises a sealing ring, an outer sleeve ring which is matched with the sealing ring and tightly pressed against the external part of the sealing ring, and an upper sealing baffle ring and a lower sealing baffle ring which are tightly clamped outside the sealing ring and the outer sleeve ring. The expansion joint for the pipeline is arranged at a connection part between the upper pipeline and the lower pipeline; the upper fixing ring is used for fixing the upper pipeline, and the lower fixing ring is used for fixing the lower pipeline; when a centrifugal compressor exhausts hot air, the upper pipeline and the lower pipe are expanded axially due to a distance between the upper pipeline and the lower pipeline, so that temperature difference stress caused by a temperature difference can be released; and furthermore, the expansion joint for the pipeline is easy to manufacture and install.
Description
Technical field
The utility model relates to the technical field of pipeline expansion joint and seal for pipe joints.
Background technique
Various metallic conduits all have the phenomenon of expanding with heat and contract with cold; Particularly for the pipeline of carrying hot fluid such as steam, coal gas, deep fat etc., because operating temperature is higher, thereby its swell increment is also bigger; This will play destruction to pipeline to producing huge axial tensile force on the pipeline.For this reason, on heat distribution pipeline, generally all to install slip joint, with to pipeline expansion compensation in addition.Delivery temperature reaches more than 105 ℃ during the centrifugal compressor running, and the temperature difference causes the flexible of pipeline, produces temperature difference stress.Traditional pipe expansion joint can not well guarantee the release of pipeline temperature difference stress, and external carbuncle can cause the machine fuselage to receive an additional external force always for a long time, causes frame deflection and machine vibration to strengthen.And traditional pipe expansion restraining is made, difficult installation, is difficult for guaranteeing assemblage gap, is easy to generate the Installation Stress distortion.
The model utility content
The purpose of the utility model provides a kind of pipeline expansion joint, can discharge the pipeline temperature difference stress, and is easy to make and install.
For realizing above-mentioned purpose; The technological scheme of the utility model is: a kind of pipeline expansion joint; Comprise pipeline fixing device and pipeline sealing device; Said pipeline fixing device comprises fixing the last retaining ring and the fixing following retaining ring of pipeline down of going up pipeline, and last retaining ring is connected through double-screw bolt with following retaining ring, and said pipeline sealing device comprises seal ring, and the outer sleeve that is pressed on the seal ring outside that is complementary of seal ring, tightly is stuck in the last seal stopper ring and the lower seal baffle ring of seal ring and outer sleeve outside.
The said seal stopper ring of going up is connected with last retaining ring through bolt, and the said seal stopper ring of going up is connected through double-screw bolt with the lower seal baffle ring.
Said outer sleeve is arranged in the annular groove of said seal ring, and the junction plane of outer sleeve upper and lower end and seal ring is a tilted conical, and said seal ring is that silicone rubber material is processed.
Said pipeline expansion joint is installed in pipeline junction up and down, the fixing pipeline of going up of last retaining ring, the fixing pipeline down of following retaining ring; When centrifugal compressor is discharged hot gas; Because the spacing of pipeline up and down, pipeline axial expands up and down, and the temperature difference stress that makes the temperature difference cause can access release.And said pipeline expansion joint is made easily, simple installation.
Description of drawings
Structural representation when Fig. 1 is the pipeline expansion joint use.
Embodiment
As shown in Figure 1; A kind of pipeline expansion joint comprises pipeline fixing device and pipeline sealing device, and said pipeline fixing device comprises the fixing last retaining ring 3 and the fixing following retaining ring 5 of pipeline 4 down of going up pipeline 2; Said going up on the retaining ring 3 has last screw 10; Have on the said retaining ring 5 down and last screw 10 corresponding screws 11 down, last retaining ring 3 is connected through double-screw bolt 12 with following retaining ring 5, and grooved nut 14 is installed on the double-screw bolt 12 of last retaining ring 3 tops; On the double-screw bolt 12 of last retaining ring 3 belows and following retaining ring 5 tops nut 18 is installed; Following retaining ring 5 belows are equipped with nut 17, and double-screw bolt 12 tops have hole 13, and cotter pin 16 is passed hole 13 and fixed grooved nut 14.Said going up used packing ring 15 between retaining ring 3 and the grooved nut 14, also use packing ring 15 between following retaining ring 5 and the nut 17, and packing ring 15 is a spherical structure, allows certain amount of misaligning.Said pipeline sealing device comprises seal ring 6, is pressed on the outside outer sleeve 7 of seal ring, tightly is stuck in seal ring 6 and outer sleeve 7 outside last seal stopper ring 8 and lower seal baffle ring 9 with seal ring 6 is complementary.Last seal stopper ring 8 is connected with last retaining ring 3 through bolt 1, and last seal stopper ring 8 is connected through double-screw bolt 19 with lower seal baffle ring 9.Said outer sleeve 7 is arranged in the annular groove of said seal ring 6, and the junction plane of outer sleeve 7 upper and lower end and seal ring 6 is a tilted conical, and said seal ring 6 is processed for silicone rubber material.Said going up between pipeline 2 and the following pipeline 4 has certain distance.
When installing and using, last retaining ring 3 is enclosed within around the pipeline 2, and following retaining ring 5 is enclosed within down around the pipeline 4, and last seal stopper ring 8 is enclosed within around the pipeline 2, and lower seal baffle ring 9 is enclosed within down around the pipeline 4.Seal ring 6 is enclosed within pipeline 2 and following pipeline 4 junction points, and outer sleeve 7 is pressed on seal ring 6 outsides, uses the top of seal stopper ring 8 chucking seal rings 6, with the bottom of lower seal baffle ring 9 chucking seal rings 6.Fastening nut 17, nut 18 and grooved nut 14 fix pipeline 2 and following pipeline 4.Through bolt 1 fixing device and seal arrangement are linked together.To go up retaining ring 3 and be welded to respectively on pipeline 2 and the following pipeline 4, will go up seal stopper ring 8 and be welded to respectively on pipeline 2 and the following pipeline 4 with lower seal baffle ring 9 with following retaining ring 5.The nut 18 of last retaining ring 3 belows and following retaining ring 5 tops is unscrewed.When centrifugal compressor was discharged hot gas, because the spacing of pipeline up and down, pipeline axial expanded up and down, and the temperature difference stress that makes the temperature difference cause can access release.
Claims (3)
1. pipeline expansion joint; It is characterized in that: comprise pipeline fixing device and pipeline sealing device; Said pipeline fixing device comprises the fixing last retaining ring and the fixing following retaining ring of pipeline down of going up pipeline; Last retaining ring is connected through double-screw bolt with following retaining ring, and said pipeline sealing device comprises seal ring, is pressed on the outside outer sleeve of seal ring, tightly is stuck in seal ring and outer sleeve outside last seal stopper ring and lower seal baffle ring with seal ring is complementary.
2. pipeline expansion joint as claimed in claim 1 is characterized in that: the said seal stopper ring of going up is connected with last retaining ring through bolt, and the said seal stopper ring of going up is connected through double-screw bolt with the lower seal baffle ring.
3. according to claim 1 or claim 2 pipeline expansion joint, it is characterized in that: said outer sleeve is arranged in the annular groove of said seal ring, and the junction plane of outer sleeve upper and lower end and seal ring is a tilted conical, and said seal ring is that silicone rubber material is processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203588820U CN202252575U (en) | 2011-09-23 | 2011-09-23 | Expansion joint for pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203588820U CN202252575U (en) | 2011-09-23 | 2011-09-23 | Expansion joint for pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202252575U true CN202252575U (en) | 2012-05-30 |
Family
ID=46113817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203588820U Expired - Fee Related CN202252575U (en) | 2011-09-23 | 2011-09-23 | Expansion joint for pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202252575U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104995444A (en) * | 2013-02-22 | 2015-10-21 | 三菱重工压缩机有限公司 | Expansion joint and compression system |
| CN107906506A (en) * | 2017-11-30 | 2018-04-13 | 江苏中科重工股份有限公司 | Pendant superheater |
-
2011
- 2011-09-23 CN CN2011203588820U patent/CN202252575U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104995444A (en) * | 2013-02-22 | 2015-10-21 | 三菱重工压缩机有限公司 | Expansion joint and compression system |
| CN104995444B (en) * | 2013-02-22 | 2017-03-08 | 三菱重工压缩机有限公司 | Flexible connector and compressibility |
| US10240700B2 (en) | 2013-02-22 | 2019-03-26 | Mitsubishi Heavy Industries Compressor Corporation | Expansion joint and compression system |
| CN107906506A (en) * | 2017-11-30 | 2018-04-13 | 江苏中科重工股份有限公司 | Pendant superheater |
| CN107906506B (en) * | 2017-11-30 | 2019-07-16 | 江苏中科重工股份有限公司 | Pendant superheater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20140923 |
|
| EXPY | Termination of patent right or utility model |