CN207112202U - Self sealss sleeve expansion joint - Google Patents
Self sealss sleeve expansion joint Download PDFInfo
- Publication number
- CN207112202U CN207112202U CN201720969605.0U CN201720969605U CN207112202U CN 207112202 U CN207112202 U CN 207112202U CN 201720969605 U CN201720969605 U CN 201720969605U CN 207112202 U CN207112202 U CN 207112202U
- Authority
- CN
- China
- Prior art keywords
- inner cylinder
- sealing shroud
- outer barrel
- ring
- flange ring
- 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
A kind of self sealss sleeve expansion joint, for compensating expanding with heat and contract with cold for pipeline, it includes inner cylinder（1）, outer barrel（2）, left section of inner cylinder is located in outer barrel, and left section of inner cylinder is provided with a sealing shroud（5）, the through holes of multiple communication sealing shroud cavitys and inner cylinder cavity are evenly distributed on left section of wall of inner cylinder（3）；The characteristics of the utility model is, the barrel of inner cylinder is provided with through hole, and the fluid via through holes in inner cylinder enter sealing shroud, and the pressure of fluid expands sealing shroud, sealing shroud is in close contact with outer barrel, the pressure of fluid is bigger, and contact of the sealing shroud with outer barrel is closer.As long as sealing shroud is not worn, sealing property would not decline.Self sealss sleeve expansion joint knot small volume of the present utility model, simple production process, solderless fitting is easy to make on the inwall of outer barrel, with enter outer barrel in interior wound packages during without use welding sequence, efficiency of assembling is high, assembles quality and is easily controlled.
Description
Technical field
The present invention relates to a kind of sleeve expansion joint, and it is used to compensate expanding with heat and contract with cold for pressure piping.
Background technology
The structure of sleeve expansion joint generally comprises outer barrel, inner cylinder, and one end of inner cylinder is stretched in outer barrel, outer barrel and inner cylinder it
Between be provided with airtight and watertight padding, the both sides of airtight and watertight padding, which are clamped, to be produced airtight and watertight padding to be radially expanded, and airtight and watertight padding is with respect to outer barrel
Position immobilizes, and the position between inner cylinder and outer barrel can axially move, and produces and rubs between airtight and watertight padding when inner cylinder moves
Wipe, wear airtight and watertight padding, cause sealing property to decline；What is interlocked in addition on outer barrel and inner cylinder is welded with annular element,
Need to weld in assembling in assembling process, work efficiency is low, and quality control is more difficult, it is therefore necessary to is improved.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of self sealss sleeve expansion joint, the self sealss sleeve expansion joint energy
Reliable compensation sealing performance.
The technical scheme is that a kind of self sealss sleeve expansion joint, it includes inner cylinder 1, outer barrel 2, left section of inner cylinder
In outer barrel, it is characterized in that, multiple through holes 3 are evenly distributed on the wall that left section of inner cylinder, the sealing welding of two panels annular solid 4 exists
Inner cylinder it is cylindrical on, described annular solid respectively be located at through hole the left and right sides, two panels annular solid is " door " by a radial section
The sealing shroud 5 of font is covered, and sealing shroud is made up of elastomeric material, and the inwall of the cylindrical and outer barrel of sealing shroud is affixed, sealing shroud
Be respectively arranged on the left side and the right side left flange ring 6 and right flange ring 7, left flange ring 6 and the external diameter of right flange ring 7 and the internal diameter of outer barrel
It is engaged, is mutually privately provided with bolt 8 vertically on the anchor ring of two panels annular solid, tightens the nut 11 on bolt, the left He of flange ring 6
Right flange ring 7 is tight by the left and right ends face pressure of sealing shroud.
It is a feature of the present invention that the barrel of inner cylinder is provided with through hole, the fluid via through holes in inner cylinder enter sealing shroud, fluid
Pressure expand sealing shroud, be in close contact sealing shroud and outer barrel, realize and sealed between inner cylinder and outer barrel, the pressure of fluid is got over
Greatly, contact of the sealing shroud with outer barrel is closer.When inner cylinder moves in outer barrel, sealing shroud has abrasion, as long as sealing shroud is not
It is worn, sealing property would not decline.
The structure of the present invention causes volume to reduce, and production technology becomes simple, solderless fitting making side on the inwall of outer barrel
Just, only have with the part of inner cylinder welding after the part such as annular solid, flange ring, sealing shroud is assembled on annular solid and inner cylinder is linked as one
Body, without using welding sequence during interior wound packages enters outer barrel, efficiency of assembling is high, and assembling quality is easily controlled.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Accompanying drawing mark represents respectively：1- inner cylinders, 2- outer barrels, 3- through holes, 4- annular solids, 5- sealing shrouds, the left flange rings of 6-, 7-
Right flange ring, 8- bolts, 9- sealing rings, 10- back-up rings, 11- nuts.
Embodiment
In conjunction with the embodiment of the brief description of the drawings present invention.
A kind of self sealss sleeve expansion joint, it includes inner cylinder 1, outer barrel 2, and left section of inner cylinder is located in outer barrel, left section of inner cylinder
Wall on be evenly distributed multiple through holes 3, the sealing welding of two panels annular solid 4 inner cylinder it is cylindrical on, described annular solid point
Not Wei Yu through hole the left and right sides, two panels annular solid covered by sealing shroud 5 of the radial section by " door " font, sealing shroud
Middle part is body, and the both ends of body have the anchor ring to extend internally, and sealing shroud is made up of elastomeric material, sealing shroud it is cylindrical with it is outer
The inwall of cylinder is affixed, and sealing shroud is respectively arranged on the left side and the right side left flange ring 6 and right flange ring 7, left flange ring 6 and right flange ring
7 external diameter is engaged with the internal diameter of outer barrel, and multiple blind holes, one end of bolt 8 are symmetrically provided with the anchor ring of the annular solid on the left side
It is fixed in blind hole, bolt is stretched to the left, through sealing shroud and left flange ring；Blind hole also is provided with the anchor ring of the annular solid on the right,
Bolt in blind hole is stretched to the right, and through sealing shroud and right flange ring, bolt is provided with nut 11, tightens nut, the left He of flange ring 6
Right flange ring 7 is tight by the left and right ends face pressure of sealing shroud, makes to seal between sealing shroud and inner cylinder.
Inner cylinder and outer barrel are distinguished seal for pipe joints adjacent thereto and connected during use, the flow direction of medium from left to right, medium from
Through hole on inner cylinder enters sealing shroud, and it is real that there is medium certain pressure energy be in close contact the inwall of sealing shroud expansion and outer tube
Existing self sealss, and contact of the bigger sealing shroud of pressure with outer tube is closer.Fluid pressure on the right side of sealing shroud is not more than close
Pressure in big envelope, additionally by the damping of right flange ring, pressure of the fluid matasomatism outside sealing shroud on the right side of sealing shroud is big
It is big to reduce, fluid be difficult to from sealing shroud it is cylindrical from leak.
When the pressure in pipeline is far below rated value, it is insufficient to allow sealing shroud fully to expand, it is possible that leakage, prevents
The only leakage of medium and the impact of the fluid to sealing shroud on damping seal set right side, right flange ring it is cylindrical on extend to the right
Go out a flange, sealing ring 9 is provided with flange, the external diameter of flange is equal with the external diameter of right flange ring.
To prevent inner tube from deviating from from outer barrel, back-up ring 10 is provided with the left end inwall of outer barrel, back-up ring leads to pin or screw
It is fixed.
The structure of the present invention causes the volume of sleeve expansion joint to reduce, and production technology becomes simple, nothing on the inwall of outer barrel
Weldment, it is easy to make；Only have the part such as annular solid, flange ring, sealing shroud with the part of inner cylinder welding to be assembled on annular solid
It is connected as a single entity afterwards with inner cylinder, without using welding sequence during interior wound packages enters outer barrel, efficiency of assembling is high, and assembling quality is held
It is easy to control.
Claims (3)
1. a kind of self sealss sleeve expansion joint, it includes inner cylinder（1）, outer barrel（2）, left section of inner cylinder is located in outer barrel, its feature
It is that multiple through holes have been evenly distributed on the wall that left section of inner cylinder（3）, two panels annular solid（4）Sealing welding inner cylinder it is cylindrical on,
Described annular solid is located at the left and right sides of through hole, sealing shroud of the two panels annular solid by a radial section for " door " font respectively
（5）Covered, sealing shroud is made up of elastomeric material, and the inwall of the cylindrical and outer barrel of sealing shroud is affixed, the left and right sides of sealing shroud
It is respectively equipped with left flange ring（6）With right flange ring（7）, left flange ring（6）With right flange ring（7）External diameter and outer barrel internal diameter phase
Coordinate, mutually bolt is privately provided with vertically on the anchor ring of two panels annular solid（8）, tighten the nut on bolt（11）Make left flange ring
（6）With right flange ring（7）The left and right ends face pressure of sealing shroud is tight.
2. self sealss sleeve expansion joint according to claim 1, it is characterized in that, right flange ring it is cylindrical on extend to the right
Go out a flange, sealing ring is provided with flange（9）, the external diameter of flange is equal with the external diameter of right flange ring.
3. self sealss sleeve expansion joint according to claim 1 or 2, it is characterized in that, it is provided with gear in the left end inwall of outer barrel
Circle（10）, back-up ring fixed with pin or screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720969605.0U CN207112202U (en) | 2017-08-04 | 2017-08-04 | Self sealss sleeve expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720969605.0U CN207112202U (en) | 2017-08-04 | 2017-08-04 | Self sealss sleeve expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207112202U true CN207112202U (en) | 2018-03-16 |
Family
ID=61582024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720969605.0U Expired - Fee Related CN207112202U (en) | 2017-08-04 | 2017-08-04 | Self sealss sleeve expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207112202U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107289222A (en) * | 2017-08-04 | 2017-10-24 | 高玉琴 | Self sealss sleeve expansion joint |
| CN108756826A (en) * | 2018-07-23 | 2018-11-06 | 西安石油大学 | A kind of reducing self-operated type water pumping gas production plunger |
| CN110307421A (en) * | 2019-07-11 | 2019-10-08 | 万新 | Composite connecting pipe |
| CN113237612A (en) * | 2021-05-06 | 2021-08-10 | 郑州大学 | Test device for simulating grouting reinforcement of offshore wind turbine |
-
2017
- 2017-08-04 CN CN201720969605.0U patent/CN207112202U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107289222A (en) * | 2017-08-04 | 2017-10-24 | 高玉琴 | Self sealss sleeve expansion joint |
| CN108756826A (en) * | 2018-07-23 | 2018-11-06 | 西安石油大学 | A kind of reducing self-operated type water pumping gas production plunger |
| CN110307421A (en) * | 2019-07-11 | 2019-10-08 | 万新 | Composite connecting pipe |
| CN113237612A (en) * | 2021-05-06 | 2021-08-10 | 郑州大学 | Test device for simulating grouting reinforcement of offshore wind turbine |
| CN113237612B (en) * | 2021-05-06 | 2024-03-19 | 郑州大学 | Test device for simulating grouting reinforcement of offshore wind turbine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180316 Termination date: 20190804 |