CN107781566A - External pressure straight pipe pressure-equalizing self- steering expansion joint - Google Patents
External pressure straight pipe pressure-equalizing self- steering expansion joint Download PDFInfo
- Publication number
- CN107781566A CN107781566A CN201610796582.8A CN201610796582A CN107781566A CN 107781566 A CN107781566 A CN 107781566A CN 201610796582 A CN201610796582 A CN 201610796582A CN 107781566 A CN107781566 A CN 107781566A
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- China
- Prior art keywords
- outer tube
- iii
- bellows
- ring flat
- plate
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L51/00—Expansion-compensation arrangements for pipe-lines
- F16L51/02—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube
- F16L51/03—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube comprising two or more bellows
- F16L51/035—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube comprising two or more bellows for cancelling the axial loading resulting from fluid pressure
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints Allowing Movement (AREA)
Abstract
The present invention relates to external pressure straight pipe pressure-equalizing self- steering expansion joint, including entrance sleeve, mozzle, discharge connection, outer tube and bellows；Outer tube III is provided with outer tube I, bellows III is provided with outer tube III, the outside of outer tube III is provided with bellows I, bellows II is provided with outer tube II；Bellows I is connected with ring flat-plate I and outer tube III, and bellows II is connected with outer tube III and ring flat-plate III, and bellows III is connected with outer tube III and entrance sleeve；SDeflector is provided between filler flange and discharge connection.The present invention is provided with guider, axially stablizes preferable, and pipeline is not susceptible to twist.Bellows can play preferable sealing function if there is leakage, the filler of filler chamber.The present invention injects airtight and watertight padding by filling mouth, strengthens the sealing property of expansion joint, the long-term reliable sealing for keeping expansion joint, realizes non-maintaining purpose.The present invention is not easy to leak, service life is long, maintenance cost is low, safe and reliable.
Description
Technical field
The present invention relates to pipeline compensator technical field, especially one kind to be provided with guider, using external pressure straight tube pressure
The maintenance-free corrugated tube expansion joint of force balance type.
Background technology
Heat supply pipeline needs to be segmented that installation is some to be used to compensate the expansion joints of pipeline extension, be particularly used to conveying high temperature,
The long range heat supply pipeline of high-pressure medium, the wall thickness of expansion joint is larger, intensity is higher, and the axial displacement of extraction duct is more.Cause
This is higher for the reliability requirement of expansion joint for pipeline.
At present, it is common to use bellows expansion joint be inner pressed working method mostly.After medium being passed through in pipeline, medium
It can enter in the inner chamber of bellows, i.e. pressure of the inwall of bellows by medium.Pipeline extends or received because expanding with heat and contract with cold
During contracting, active force that bellows is stretched or compressed, easily causes the torsion of expansion joint at the pressure born plus ripple inside pipe wall
It is dynamic.During long-term use, because stroke is larger caused by heat supply pipeline, the wave number of bellows is more, the ripple of expansion joint
Tube capacity easily leaks because of fatigue, and inner pressed bellows, which once leaks, can make whole expansion joint fail.Therefore periodically dimension is needed
Shield changes expansion joint for pipeline, causes the service life of expansion joint shorter, the workload safeguarded and changed is big, and cost is higher.Have
When can also because fail in time find and change failure expansion joint caused by industrial accident.
The content of the invention
It is an object of the invention to provide one kind to be provided with guider, and reliability is higher, is not easy to leak, service life length,
Non-maintaining external pressure straight-pipe pressure balanced expansion joint is realized during use.
The purpose of the present invention is achieved by the following technical solution：
External pressure straight pipe pressure-equalizing self- steering expansion joint, including entrance sleeve, mozzle, discharge connection and two or more
Outer tube and bellows；The inner surface of the entrance sleeve is connected with mozzle, and mozzle is extend into discharge connection, and import connects
The outer surface of pipe is connected by ring flat-plate I with the left end of outer tube I, and the right-hand member of outer tube I passes through a left side for ring flat-plate II and outer tube II
End connection, the right-hand member of outer tube II are connected with ring flat-plate III, and ring flat-plate III is set in the outer surface of discharge connection, the outer tube I
Outer tube III is provided with inner chamber, the inner side of outer tube III is provided with bellows III, and the outside of outer tube III is provided with bellows I, described
Bellows II is provided with the inner chamber of outer tube II；The left end of the bellows I is connected with ring flat-plate I, and the right-hand member of bellows I passes through end
Ring I is connected with outer tube III, and the left end of the bellows II is connected with outer tube III, the right-hand member of bellows II and the ring flat-plate III
Connection, the left end of the bellows III are connected with the left end of outer tube III, and the right-hand member of bellows III is outer with the entrance sleeve
Surface connects；The right side of the ring flat-plate III is provided with filler chamber, and airtight and watertight padding is provided with filler chamber；The filler chamber by loading pipe and
Filler flange is formed, and filler flange is connected by bolt with ring flat-plate III, and the contact surface of filler flange and discharge connection is provided with groove,
SDeflector is provided with groove.
As the preferred technical solution of the present invention, the right-hand member of the outer tube III passes through the appearance of end ring II and discharge connection
Face is welded and fixed, and the left end of bellows II is connected by end ring II with outer tube III.
As the preferred technical solution of the present invention, the left end of the bellows III passes through end ring III and the left end of outer tube III
It is welded and fixed.
As the preferred technical solution of the present invention, the filler tube wall of the filler chamber is provided with filling mouth.
As the preferred technical solution of the present invention, collar aperture is provided with the tube wall of the outer tube III so that outer tube I with
The inner chamber that bellows I is formed and the intracavity inter-connection of the discharge connection.
As the preferred technical solution of the present invention, ball valve is installed on the tube wall of the outer tube I.
As the preferred technical solution of the present invention, ring flat-plate hole is provided with the ring flat-plate I so that bellows I and bellows III
The inner chamber of composition is connected with the open space in the outside of ring flat-plate I.
As the preferred technical solution of the present invention, gusset is provided between the ring flat-plate II and outer tube II, gusset is simultaneously
It is welded and fixed with ring flat-plate II and outer tube II.
As the preferred technical solution of the present invention, the discharge connection outer wall on the right side of ring flat-plate III is provided with otic placode, otic placode
It is connected by pull bar with the outer wall of outer tube II.
The beneficial effects of the invention are as follows：Relative to prior art, after expansion joint of the present invention is passed through medium in pipeline, medium
It can enter in the exterior chamber of bellows, i.e. external-compression type working method.The pulling force and pressure that expansion joint is subject in pipeline extension
Power mutually balances, and axially stablizes preferable, and pipeline is not susceptible to twist.Even if bellows is because fatigue failure leaks, expansion joint
The filler of filler chamber can play preferable sealing function.
The present invention is provided with guider, can also inject airtight and watertight padding by filling mouth, strengthen the close of expansion joint
Sealing property, the long-term reliable sealing for keeping expansion joint and flexible motion, realize automatic guide and non-maintaining purpose.The present invention is not
Easily leak, service life is long, maintenance cost is low, safe and reliable.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the mplifying structure schematic diagram at A in Fig. 1.
In figure：1st, entrance sleeve, 2, ring flat-plate I, 3, bellows I, 4, outer tube III, 5, outer tube I, 6, ball valve, 7, ring flat-plate
II, 8, gusset, 9, outer tube II, 10, ring flat-plate III, 11, pull bar, 12, otic placode, 13, filler chamber, 14, discharge connection, 15, water conservancy diversion
Pipe, 16, filling mouth, 17, airtight and watertight padding, 18, bellows III, 19, collar aperture, 20, bellows II, 21, end ring I, 22, end
Ring II, 23, end ring III, 24, ring flat-plate hole, 25, filler flange, 26, SDeflector.
Embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings：
As depicted in figs. 1 and 2, external pressure straight pipe pressure-equalizing self- steering expansion joint, including entrance sleeve 1, mozzle 15, go out
Mouth adapter 14 and two or more outer tube and bellows；The inner surface of the entrance sleeve 1 is connected with mozzle 15, mozzle
15 are extend into discharge connection 14, and the outer surface of entrance sleeve 1 is connected by ring flat-plate I 2 with the left end of outer tube I 5, outer tube I 5
Right-hand member be connected by ring flat-plate II 7 with the left end of outer tube II 9, the right-hand member of outer tube II 9 is connected with ring flat-plate III 10, ring flat-plate III 10
The outer surface of discharge connection 14 is set in, outer tube III 4 is provided with the inner chamber of outer tube I 5, the inner side of outer tube III 4 is provided with ripple
Line pipe III 18, the outside of outer tube III 4 are provided with bellows I 3, bellows II 20 are provided with the inner chamber of outer tube II 9；Bellows I 3
Left end be connected with ring flat-plate I 2, the right-hand member of bellows I 3 is connected by end ring I 21 with outer tube III 4, the left end of bellows II 20
It is connected with outer tube III 4, the right-hand member of bellows II 20 is connected with ring flat-plate III 10, left end and the outer tube III 4 of bellows III 18
Left end is connected, and the right-hand member of bellows III 18 is connected with the outer surface of entrance sleeve 1；The right side of ring flat-plate III 10 is provided with filler chamber 13,
Airtight and watertight padding 17 is provided with filler chamber 13；Filler chamber 13 is made up of loading pipe and filler flange 25, and filler flange 25 passes through bolt
It is connected with ring flat-plate III 10, the contact surface of filler flange 25 and discharge connection 14 is provided with groove, and SDeflector 26 is provided with groove.
In the present embodiment, the right-hand member of outer tube III 4 is welded and fixed by the outer surface of end ring II 22 and discharge connection 14, ripple
The left end of line pipe II 20 is connected by end ring II 22 with outer tube III 4.The left end of bellows III 18 passes through end ring III 23 and outer tube
III 4 left end is welded and fixed.The filler tube wall of filler chamber 13 is provided with filling mouth 16.
Collar aperture 19 is provided with the tube wall of the present embodiment outer tube III 4 so that outer tube I 5 forms interior with bellows I 3
The intracavity inter-connection of chamber and discharge connection 14.Ball valve 6 is installed on the tube wall of outer tube I 5；Ring flat-plate hole 24 is provided with ring flat-plate I 2,
So that the inner chamber that bellows I 3 and bellows III 18 are formed is connected with the open space in the outside of ring flat-plate I 2.Ring flat-plate II 7 and overcoat
Gusset 8 is provided between pipe II 9, gusset 8 is welded and fixed with ring flat-plate II 7 and outer tube II 9 simultaneously.The outlet on the right side of ring flat-plate III 10
The outer wall of adapter 14 is provided with otic placode 12, and otic placode 12 is connected by pull bar 11 with the outer wall of outer tube II 9.Pull bar 11 and otic placode 12 are led
It is used to fixing and protecting expansion joint, avoids product from being damaged in packaging and transportation, be installed in expansion joint in pipeline
Need to remove pull bar 11 during operating position.
Claims (9)
1. a kind of external pressure straight pipe pressure-equalizing self- steering expansion joint, including entrance sleeve, mozzle, discharge connection and two with
Upper outer tube and bellows；The inner surface of the entrance sleeve is connected with mozzle, and mozzle is extend into discharge connection, import
The outer surface of adapter is connected by ring flat-plate I with the left end of outer tube I, and the right-hand member of outer tube I passes through ring flat-plate II and outer tube II
Left end is connected, and the right-hand member of outer tube II is connected with ring flat-plate III, and ring flat-plate III is set in the outer surface of discharge connection, it is characterized in that：Institute
State and outer tube III is provided with the inner chamber of outer tube I, the inner side of outer tube III is provided with bellows III, and the outside of outer tube III is provided with ripple
Line pipe I, bellows II is provided with the inner chamber of the outer tube II；
The left end of the bellows I is connected with ring flat-plate I, and the right-hand member of bellows I is connected by end ring I with outer tube III, the ripple
The left end of line pipe II is connected with outer tube III, and the right-hand member of bellows II is connected with the ring flat-plate III, the left end of the bellows III
It is connected with the left end of outer tube III, the right-hand member of bellows III is connected with the outer surface of the entrance sleeve；The right side of the ring flat-plate III
Side is provided with filler chamber, and airtight and watertight padding is provided with filler chamber；The filler chamber is made up of loading pipe and filler flange, and filler flange leads to
Cross bolt to be connected with ring flat-plate III, the contact surface of filler flange and discharge connection is provided with groove, and SDeflector is provided with groove.
2. external pressure straight pipe pressure-equalizing self- steering expansion joint according to claim 1, it is characterized in that：The outer tube III
Right-hand member is welded and fixed by the outer surface of end ring II and discharge connection, and the left end of bellows II passes through end ring II and outer tube III
Connection.
3. external pressure straight pipe pressure-equalizing self- steering expansion joint according to claim 1, it is characterized in that：The bellows III
Left end is welded and fixed by the left end of end ring III and outer tube III.
4. external pressure straight pipe pressure-equalizing self- steering expansion joint according to claim 1, it is characterized in that：The filler chamber fills out
Expects pipe wall is provided with filling mouth.
5. the external pressure straight pipe pressure-equalizing self- steering expansion joint according to any one of Claims 1-4, it is characterized in that：It is described
Collar aperture is provided with the tube wall of outer tube III so that outer tube I and the inner chamber that bellows I is formed and the inner chamber of the discharge connection
It is connected.
6. external pressure straight pipe pressure-equalizing self- steering expansion joint according to claim 5, it is characterized in that：The outer tube I
Ball valve is installed on tube wall.
7. external pressure straight pipe pressure-equalizing self- steering expansion joint according to claim 5, it is characterized in that：Opened on the ring flat-plate I
Annulate lamella hole so that the inner chamber that bellows I and bellows III are formed is connected with the open space in the outside of ring flat-plate I.
8. external pressure straight pipe pressure-equalizing self- steering expansion joint according to claim 1, it is characterized in that：The ring flat-plate II with it is outer
Gusset is provided between sleeve pipe II, gusset is welded and fixed with ring flat-plate II and outer tube II simultaneously.
9. external pressure straight pipe pressure-equalizing self- steering expansion joint according to claim 1, it is characterized in that：The right side of ring flat-plate III
Discharge connection outer wall be provided with otic placode, otic placode is connected by pull bar with the outer wall of outer tube II.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610796582.8A CN107781566A (en) | 2016-08-31 | 2016-08-31 | External pressure straight pipe pressure-equalizing self- steering expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610796582.8A CN107781566A (en) | 2016-08-31 | 2016-08-31 | External pressure straight pipe pressure-equalizing self- steering expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107781566A true CN107781566A (en) | 2018-03-09 |
Family
ID=61451406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610796582.8A Withdrawn CN107781566A (en) | 2016-08-31 | 2016-08-31 | External pressure straight pipe pressure-equalizing self- steering expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107781566A (en) |
-
2016
- 2016-08-31 CN CN201610796582.8A patent/CN107781566A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180309 |
|
| WW01 | Invention patent application withdrawn after publication |