CN106402562B - Vapour-pressure type sleeve expansion joint - Google Patents
Vapour-pressure type sleeve expansion joint Download PDFInfo
- Publication number
- CN106402562B CN106402562B CN201611110754.8A CN201611110754A CN106402562B CN 106402562 B CN106402562 B CN 106402562B CN 201611110754 A CN201611110754 A CN 201611110754A CN 106402562 B CN106402562 B CN 106402562B
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- CN
- China
- Prior art keywords
- pipe
- seal receptacle
- connect
- sealing material
- pipeline inner
- 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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Classifications
-
- 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
-
- 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
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/12—Adjustable joints, Joints allowing movement allowing substantial longitudinal adjustment or movement
Abstract
The present invention provides a kind of vapour-pressure type sleeve expansion joint, including：Pipeline inner sleeve, duct wrap, the pipeline inner sleeve are mounted in duct wrap, and the two is connect by both ends by flange with external stability；It is provided with 2 grooves on the duct wrap as seal receptacle, respectively primary seal seat and auxiliary seal receptacle, sealing material is placed in each seal receptacle；The primary seal seat is connect by first pipe with external gas source；The auxiliary seal receptacle is connect by second pipe with bailout gas；Spring is provided in first pipe, one end of spring connects trigger switch, and the trigger switch is connect by control line of electromagnetic valve with the solenoid valve being arranged on second pipe；The present invention realizes the sealing between sealing material and pipeline inner-outer sleeve using gas pressure, and sealed pressure is adjustable, expands the applicable pressure limit of the present apparatus.In addition, the present apparatus places sealing material using concave structure, it is made not generate displacement, not fall off.
Description
Technical field
The present invention relates to field of mechanical technique more particularly to a kind of vapour-pressure type sleeve expansion joints.
Background technology
Traditional expansion bend has sleeve expansion piece, bellow-type expansion joint, rectangular natural compensation telescopic joint etc., major function
For：1. compensation extraction duct is axial, laterally, be angularly heated caused dilatation.2. absorption equipment vibrates, vibration equipment is reduced
Influence to pipeline.3. absorb earthquake, earth subsidence to the deflection of pipeline, 4, closed line system system installation etc..Existing pipeline is heated
The factors such as expansion influence, and are axially and radially generating certain displacement, conventional telescopic device can compensate these displacements, but tie
Structure is complicated, applicable pressure rating is non-adjustable, radial displacement is small, easy to aging.
Invention content
It is an object of the invention to solve the problems of the above-mentioned prior art, when a kind of simple in structure, installation is provided
Also it can guarantee the excellent vapour-pressure type sleeve expansion joint of leakproofness in the case that radial displacement is big.
A kind of vapour-pressure type sleeve expansion joint, including：Pipeline inner sleeve, duct wrap, the pipeline inner sleeve are mounted on outside pipeline
In set, the two is connect by both ends by flange with external stability；2 grooves are provided on the duct wrap as sealing
Seat, respectively primary seal seat and auxiliary seal receptacle, sealing material is placed in each seal receptacle；The primary seal seat passes through first
Pipeline is connect with external gas source；The auxiliary seal receptacle is connect by second pipe with bailout gas；It is provided in first pipe
One end of spring, spring is connected with trigger switch, and the trigger switch is arranged by control line of electromagnetic valve on second pipe
Solenoid valve connection；Cause spring to extend when primary seal seat is sealed with leakage, so that trigger switch triggering solenoid valve is opened, to logical
Bailout gas is crossed to be sealed to auxiliary seal receptacle gas injection.
Further, compensator as described above, the sealing material are polytetrafluoroethylene (PTFE).
Further, compensator as described above is respectively arranged with anti-inner and outer pipes in the end of pipeline inner sleeve, duct wrap
The dropping structure of road casing separation.
Further, compensator as described above, is provided with shut-off valve in first pipe, and the shut-off valve passes through quick
Air pressure connector is connect with external gas source.
Further, the section of compensator as described above, the primary seal seat and auxiliary seal receptacle is trapezium structure.
Advantageous effect：
Vapour-pressure type sleeve expansion joint provided by the invention carries out radially, axially bit shift compensation using air inflated structure, radial
It is larger that displacement is installed, it is easy for installation, maintenance is small, while also ensuring the leakproofness of pipeline；In addition, its is simple in structure, easily
In operation, the sealing between sealing material and pipeline inner-outer sleeve is realized using gas pressure, sealed pressure is adjustable, expands
The applicable pressure limit of the present apparatus.In addition, the present apparatus places sealing material using concave structure, it is made not generate displacement, no
It falls off.
Description of the drawings
Fig. 1 is vapour-pressure type sleeve expansion joint cross-sectional view of the present invention.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, the technical solution below in the present invention carries out clear
Chu is fully described by, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without creative efforts
Embodiment shall fall within the protection scope of the present invention.
Fig. 1 is vapour-pressure type sleeve expansion joint cross-sectional view of the present invention, as shown in Figure 1, one kind provided by the invention
Vapour-pressure type sleeve expansion joint, including：Pipeline inner sleeve 13, duct wrap 2, the pipeline inner sleeve 13 are mounted in duct wrap 2, and two
The two is connect by end by flange 1 with external stability；2 grooves are provided on the duct wrap 2 as seal receptacle, respectively
For main seal receptacle 12 and auxiliary seal receptacle 14, sealing material 10 is placed in each seal receptacle；The primary seal seat 12 passes through
One pipeline is connect with external gas source 8；The auxiliary seal receptacle 14 is connect by second pipe with bailout gas 3；In first pipe
It is provided with spring 7, one end of spring 7 is connected with trigger switch 6, and the trigger switch 6 is by control line of electromagnetic valve 5 and second
The solenoid valve 4 being arranged on pipeline connects；Cause spring 7 to extend when primary seal seat 12 is sealed with leakage, trigger switch 6 is made to trigger electricity
Magnet valve 4 is opened, to be sealed to 14 gas injection of auxiliary seal receptacle by bailout gas 3.
The present invention uses two stage atmospheric pressure formula sealing structure, and primary seal is main sealing device, and secondary seal is auxiliary seal
Device, when primary seal device because usage time length etc. is sealed with leakage etc. caused by reasons, when leaking into air pressure less than using
It is required that when, since primary seal pressure reduces, the spring in first pipe is caused to extend, spring elongation leads to trigger switch 6 and electricity
Magnet valve control line triggers solenoid valve, so that solenoid valve is opened to allow, bailout gas is injected two stage sealing device, plays sealing
Effect.The present invention improves equipment safety using two-stage sealing device structure.Present invention employs vapour-pressure type telescoping structure,
Installation operation is simple, in particular improves the installation effectiveness of close conduit system.The present invention is using gas pressure in closed system
The identical principle of interior each point air pressure so that sealing material uniform force on entire sealing ring, sealed pressure is identical, to reach sealing
Effect.
The present apparatus carries out radially, axially bit shift compensation using air inflated structure, and radially installed displacement is larger, installation side
Just, maintenance is small, as a kind of novel piping displacement compensation device, can effectively solve conventional telescopic device installation requirement radial direction position
Shifting amount is small, is applicable in the nonadjustable defect of pressure rating.It can freely stretch between inventive pipeline inner-outer sleeve, variable size is big.
The primary seal seat and auxiliary seal receptacle are the double concave structure seats of an annular, and seal receptacle is close for placing on duct wrap
Closure material polytetrafluoroethylene (PTFE), due to that for concave, sealing material can be kept not generate displacement, do not fall off.Traditional enclosed pipe
Road system is in repair, and due to system category closed system, when repair, all connections are rigid Hard link, are not pacified effectively
Space is filled, gasket etc. cannot be installed effectively, and sealing effect is poor greatly and between flange for installation difficulty.Using the present apparatus, due to can be with
By the variation between pipeline inner-outer sleeve, first device axial dimension is reduced, after equipment is installed, carry out again the present apparatus with
Pipe flange connects, and identical as open system installation, installation difficulty is small, and sealing effect is good between flange.Pipe-line system is normal
In operation, since the factors such as thermal expansion cause pipeline to expand with heat and contract with cold so that pipeline length changes, and the present apparatus can pass through pipe
The mutual movement of road inner-outer sleeve, makes change in displacement appropriate, becomes to offset the piping displacement caused by the factors such as thermal expansion
Change.
Preferably, the sealing material 10 is polytetrafluoroethylene (PTFE).
Specifically, the present invention has good plastic deformation performance, with air pressure using polytetrafluoroethylene (PTFE) as sealing material
Mode squeeze and make its plastic deformation to achieve the effect that sealing, service using life, sealing effect and flexible spirit is greatly improved
Activity.It is contacted by air pressure between polytetrafluoroethylene (PTFE) and metal sleeve, polytetrafluoroethylene (PTFE) has good free telescopicing performance sliding
Performance and wear-resisting property etc..
Preferably, in order to improve the safety of vapour-pressure type sleeve expansion joint of the present invention, in pipeline inner sleeve 13, duct wrap 2
End be respectively arranged with the dropping structure 11 of anti-inside and outside pipe sleeve separation.
Preferably, for the ease of installing and using, the present invention is provided with shut-off valve 9 in first pipe, and the shut-off valve 9 is logical
Quick air pressure connector is crossed to connect with external gas source 8.
Preferably, in order to improve the leakproofness of the present invention, the section of the primary seal seat 12 and auxiliary seal receptacle 14 is trapezoidal
Structure.
The present invention places sealing material using concave structure, it is made not generate displacement, not fall off.
The present invention, as sealing material, improves the service life of sealing material, duct wrap (sealing using polytetrafluoroethylene (PTFE)
Material) sliding between pipeline inner sleeve is easier.
The present invention realizes the sealing between sealing material and pipeline inner sleeve using gas pressure, and sealed pressure is adjustable,
Expand the applicable pressure limit of the present apparatus.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, it will be understood by those of ordinary skill in the art that：It still may be used
With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features；
And these modifications or replacements, various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (4)
1. a kind of vapour-pressure type sleeve expansion joint, which is characterized in that including：Pipeline inner sleeve (13), duct wrap (2), the pipeline
Inner sleeve (13) be mounted on duct wrap (2) in, pipeline inner sleeve (13), duct wrap (2) both ends by flange (1) by the two with
External stability connects；2 grooves are provided on the duct wrap (2) as seal receptacle, respectively primary seal seat (12) and
Auxiliary seal receptacle (14), is placed with sealing material (10) in each seal receptacle；The primary seal seat (12) by first pipe with
External gas source (8) connects；The auxiliary seal receptacle (14) is connect by second pipe with bailout gas (3)；It is set in first pipe
Be equipped with spring (7), one end connection trigger switch (6) of spring (7), the trigger switch (6) by control line of electromagnetic valve (5) with
Solenoid valve (4) connection being arranged on second pipe；Cause spring (7) to extend when primary seal seat (12) is sealed with leakage, makes to touch
Hair switch (6) triggering solenoid valve (4) is opened, to be sealed to auxiliary seal receptacle (14) gas injection by bailout gas (3).
2. compensator according to claim 1, which is characterized in that the sealing material (10) is polytetrafluoroethylene (PTFE).
3. compensator according to claim 1, which is characterized in that it is provided with shut-off valve (9) in first pipe, described section
Only valve (9) is connect by quick air pressure connector with external gas source (8).
4. compensator according to claim 1, which is characterized in that section of the primary seal seat (12) and auxiliary seal receptacle (14)
Face is trapezium structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611110754.8A CN106402562B (en) | 2016-12-06 | 2016-12-06 | Vapour-pressure type sleeve expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611110754.8A CN106402562B (en) | 2016-12-06 | 2016-12-06 | Vapour-pressure type sleeve expansion joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106402562A CN106402562A (en) | 2017-02-15 |
| CN106402562B true CN106402562B (en) | 2018-11-02 |
Family
ID=58084032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611110754.8A Active CN106402562B (en) | 2016-12-06 | 2016-12-06 | Vapour-pressure type sleeve expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106402562B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113898790B (en) * | 2020-06-22 | 2023-03-14 | 中国航发商用航空发动机有限责任公司 | Pipe support and thermal deformation compensation device for same |
| CN114962826B (en) * | 2022-06-16 | 2024-03-08 | 中海石油(中国)有限公司 | Underwater hydraulic loading telescopic connector |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB904266A (en) * | 1960-06-15 | 1962-08-29 | Zallea Brothers | Improvements in expansion joints |
| DE2437138A1 (en) * | 1974-08-01 | 1976-02-12 | Linde Ag | Expansion closure ring for pipes - has pressure ring with seal made from braided hose filled with pulverised material |
| CN2530126Y (en) * | 2001-02-20 | 2003-01-08 | 文长朴 | Two-way extension filling pipeline compensator |
| CN101900235B (en) * | 2010-07-29 | 2013-03-06 | 江苏贝特管件有限公司 | Zero-thrust sleeve type compensator |
| KR20120098009A (en) * | 2011-02-28 | 2012-09-05 | 주식회사 진흥기공 | Bellows type joint using function safety and alarm |
| CN103148311B (en) * | 2013-03-22 | 2015-08-05 | 航天晨光股份有限公司 | Spherical shell type universal angle expansion joint |
| CN204213520U (en) * | 2014-09-30 | 2015-03-18 | 上海梅山钢铁股份有限公司 | A kind of shatter-proof wear-resisting compensation leakage monitoring tube equipment |
| CN105697790A (en) * | 2015-12-09 | 2016-06-22 | 中国空气动力研究与发展中心超高速空气动力研究所 | Air inflation axial sealing device used in vacuum environment |
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2016
- 2016-12-06 CN CN201611110754.8A patent/CN106402562B/en active Active
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| Publication number | Publication date |
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| CN106402562A (en) | 2017-02-15 |
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