CN106402562A - Air pressure type sleeve compensator - Google Patents
Air pressure type sleeve compensator Download PDFInfo
- Publication number
- CN106402562A CN106402562A CN201611110754.8A CN201611110754A CN106402562A CN 106402562 A CN106402562 A CN 106402562A CN 201611110754 A CN201611110754 A CN 201611110754A CN 106402562 A CN106402562 A CN 106402562A
- Authority
- CN
- China
- Prior art keywords
- pipeline
- sleeve
- sealing
- inner sleeve
- spring
- 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.)
- Granted
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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 invention provides an air pressure type sleeve compensator which comprises a pipeline inner sleeve and a pipeline outer sleeve, wherein the pipeline inner sleeve is mounted in the pipeline outer sleeve; the pipeline inner sleeve and the pipeline outer sleeve are fixedly connected with the outer part of the air pressure sleeve type compensator through flanges at the two ends; two grooves are formed in the pipeline outer sleeve as sealing bases which are separately a primary sealing base and an auxiliary sealing sleeve; a sealing material is arranged in each sealing base; the primary sealing base is connected with an external gas source through a first pipeline; the auxiliary sealing base is connected with a standby gas source through a second pipeline; a spring is arranged in the first pipeline; one end of the spring is connected with a trigger switch; and the trigger switch is connected with a solenoid valve arranged on the second pipeline through a solenoid valve control line. The air pressure type sleeve compensator provided by the invention adopts gas pressure to realize sealing among the sealing material, the pipeline inner sleeve and the pipeline outer sleeve, and sealing pressure is adjustable, so that applicable pressure range of the device is expanded. Besides, the device adopts an inner concave type structure to place the sealing material, so that displacement and dropping are avoided.
Description
Technical field
The present invention relates to field of mechanical technique, more particularly, to a kind of vapour-pressure type sleeve expansion joint.
Background technology
Traditional compensator has sleeve expansion piece, bellow-type expansion joint, square natural compensation telescopic joint etc., its major function
For：1. compensate extraction duct and axially, laterally, be angularly subject to thermally-induced dilatation.2. absorption equipment vibration, reduces vibration equipment
Impact to pipeline.3. absorb earthquake, the deflection to pipeline for the earth subsidence, 4, closed line system system install etc..Existing pipeline is heated
The impact of the factors such as expansion, is axially and radially all producing certain displacement, conventional telescopic device can compensate these displacements, but knot
Structure is complicated, applicable pressure rating is non-adjustable, radial displacement is little, easily aging.
Content of the invention
It is an object of the invention to solving the defect that above-mentioned prior art exists, when providing that a kind of structure is simple, installing
Also the excellent vapour-pressure type sleeve expansion joint of sealing is can guarantee that in the case that radial displacement is big.
A kind of vapour-pressure type sleeve expansion joint, including：Pipeline inner sleeve, duct wrap, described pipeline inner sleeve is arranged on outside pipeline
In set, both are connected with external stability by two ends by flange；2 grooves are provided with described duct wrap as sealing
Seat, respectively primary seal seat and auxiliary seal receptacle, it is placed with encapsulant in each seal receptacle；Described primary seal seat passes through first
Pipeline is connected with external gas source；Described auxiliary seal receptacle is connected with bailout gas by second pipe；It is provided with the first pipeline
Spring, one end of spring is connected with trigger switch, and described trigger switch is passed through control line of electromagnetic valve and arranged with second pipe
Electromagnetic valve connect；Lead to spring to extend when primary seal seat is sealed with leakage, make trigger switch trigger electromagnetic valve and open, thus logical
Cross bailout gas to be sealed to auxiliary seal receptacle gas injection.
Further, compensator as above, described encapsulant is politef.
Further, compensator as above, is respectively arranged with anti-inner and outer pipes in the end of pipeline inner sleeve, duct wrap
The detached dropping structure of road sleeve pipe.
Further, compensator as above, is provided with stop valve on the first pipeline, and described stop valve passes through quick
Air pressure union joint is connected with external gas source.
Further, compensator as above, the section of described primary seal seat and auxiliary seal receptacle is trapezium structure.
Beneficial effect：
The vapour-pressure type sleeve expansion joint that the present invention provides, carries out radially, axially bit shift compensation using air inflated structure, radially
Installation displacement is larger, and easy for installation, maintenance is little, also ensures that the sealing of pipeline simultaneously；In addition, its structure is simple, easily
In operation, realize the sealing between encapsulant and pipeline inner-outer sleeve, seal pressure scalable using gas pressure, expand
The applicable pressure limit of this device.Additionally, this device places encapsulant using concave structure so as to not produce displacement, no
Come off.
Brief description
Fig. 1 is vapour-pressure type sleeve expansion joint cross-sectional view of the present invention.
Specific embodiment
For making the object, technical solutions and advantages of the present invention clearer, below technical scheme in the present invention carry out clearly
Chu, it is fully described by it is clear that described embodiment a part of embodiment that is the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work
Embodiment, broadly falls into the scope of protection of the invention.
Fig. 1 is vapour-pressure type sleeve expansion joint cross-sectional view of the present invention, as shown in figure 1, one kind that the present invention provides
Vapour-pressure type sleeve expansion joint, including：Pipeline inner sleeve 13, duct wrap 2, described pipeline inner sleeve 13 is arranged in duct wrap 2, and two
Both are connected with external stability by end by flange 1；2 grooves are provided with described duct wrap 2 as seal receptacle, difference
Based on seal receptacle 12 and auxiliary seal receptacle 14, be placed with encapsulant 10 in each seal receptacle；Described primary seal seat 12 passes through the
One pipeline is connected with external gas source 8；Described auxiliary seal receptacle 14 is connected with bailout gas 3 by second pipe；In the first pipeline
Be provided with spring 7, one end of spring 7 is connected with trigger switch 6, described trigger switch 6 pass through control line of electromagnetic valve 5 with second
On pipeline, the electromagnetic valve 4 of setting connects；Lead to spring 7 to extend when primary seal seat 12 is sealed with leakage, make trigger switch 6 trigger electricity
Magnet valve 4 is opened, thus being sealed to the gas injection of auxiliary seal receptacle 14 by bailout gas 3.
The present invention adopts 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 is sealed with leakage etc. because what the reasons such as use time length caused, is less than use when leaking into air pressure
During requirement, because primary seal pressure reduces, the spring in the first pipeline is caused to extend, spring elongation leads to trigger switch 6 and electricity
Magnet valve control line triggers electromagnetic valve, thus allow making electromagnetic valve open, bailout gas being injected two stage sealing device, playing 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 utilizes gas pressure in closed system
So that encapsulant uniform force on whole sealing ring, seal pressure is identical, to reach sealing for interior each point air pressure identical principle
Effect.
This device carries out radially, axially bit shift compensation using air inflated structure, and radially installed displacement is larger, installation side
Just, maintenance is little, as a kind of new piping displacement compensation device, can effectively solving conventional telescopic device installation requirement radial direction position
Shifting amount is little, be suitable for the nonadjustable defect of pressure rating.Can freely stretch between inventive pipeline inner-outer sleeve, variable-sized big.
Described primary seal seat and auxiliary seal receptacle are the double concave structure seat of an annular, and seal receptacle is on duct wrap, close for placing
Closure material politef, due to for concave, can keep encapsulant not produce displacement, do not fall off.Traditional enclosed pipe
In maintenance, because system belongs to closed system, during maintenance, all connections are rigid Hard link to road system, effectively do not pacify
Dress space, sealing gasket etc. can not effectively install, installation difficulty is big and flange between sealing effectiveness poor.Using this device, due to permissible
By the change between pipeline inner-outer sleeve, first device axial dimension is reduced, after equipment is installed, carry out again this device with
Pipe flange connects, and identical with open system installation, installation difficulty is little, good sealing effect between flange.Tubing is normal
In operation, because the factors such as thermal expansion cause pipeline to expand with heat and contract with cold so that pipeline length changes, this device can be by pipe
The mutual motion of road inner-outer sleeve, makes suitable change in displacement, to offset and to be become due to the piping displacement that the factors such as thermal expansion cause
Change.
Preferably, described encapsulant 10 is politef.
Specifically, the present invention adopts politef as encapsulant, and it has good plastic deformation performance, with air pressure
Mode extrude and make its plastic deformation reaching the effect of sealing, device service life, sealing effectiveness and flexible spirit are greatly improved
Activity.Contacted by air pressure between politef and metal sleeve, politef has good free telescopicing performance and slides
Performance and anti-wear performance 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 anti-inside and outside detached dropping structure of pipe sleeve 11.
Preferably, for the ease of installing and using, the present invention is provided with stop valve 9 on the first pipeline, and described stop valve 9 leads to
Cross quick air pressure union joint to be connected with external gas source 8.
Preferably, in order to improve the sealing of the present invention, the section of described primary seal seat 12 and auxiliary seal receptacle 14 is trapezoidal
Structure.
The present invention places encapsulant so as to not producing displacement, not falling off using concave structure.
The present invention adopts politef as encapsulant, improves the service life of encapsulant, duct wrap (sealing
Material) slip and pipeline inner sleeve between is easier.
The present invention realizes the sealing between encapsulant and pipeline inner sleeve using gas pressure, seal pressure scalable,
Expand the applicable pressure limit of this device.
Finally it should be noted that：Above example only in order to technical scheme to be described, is not intended to limit；Although
With reference to the foregoing embodiments the present invention is described in detail, it will be understood by those within the art that：It still may be used
To modify to the technical scheme described in foregoing embodiments, or equivalent is carried out to wherein some technical characteristics；
And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (5)
1. a kind of vapour-pressure type sleeve expansion joint is it is characterised in that include：Pipeline inner sleeve (13), duct wrap (2), described pipeline
Inner sleeve (13) is arranged in duct wrap (2), and two ends are passed through flange (1) and are connected both with external stability；Outside described pipeline
It is provided with 2 grooves as seal receptacle, respectively primary seal seat (12) and auxiliary seal receptacle (14), in each seal receptacle on set (2)
In be placed with encapsulant (10)；Described primary seal seat (12) is connected with external gas source (8) by the first pipeline；Described auxiliary sealing
Seat (14) is connected with bailout gas (3) by second pipe；It is provided with spring (7) in the first pipeline, one end of spring (7) is even
Connect trigger switch (6), described trigger switch (6) passes through the electromagnetic valve (4) of control line of electromagnetic valve (5) and setting on second pipe
Connect；Lead to spring (7) to extend when primary seal seat (12) is sealed with leakage, make trigger switch (6) trigger electromagnetic valve (4) and open,
Thus being sealed to auxiliary seal receptacle (14) gas injection by bailout gas (3).
2. compensator according to claim 1 is it is characterised in that described encapsulant (10) is politef.
3. compensator according to claim 1 is it is characterised in that end part in pipeline inner sleeve (13), duct wrap (2)
It is not provided with the anti-inside and outside detached dropping structure of pipe sleeve (11).
4. compensator according to claim 1 is it is characterised in that be provided with stop valve (9) on the first pipeline, described section
Only valve (9) is connected with external gas source (8) by quick air pressure union joint.
5. compensator according to claim 1 is it is characterised in that the cutting of described 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 true CN106402562A (en) | 2017-02-15 |
| CN106402562B 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) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113898790A (en) * | 2020-06-22 | 2022-01-07 | 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 |
| CN114962826A (en) * | 2022-06-16 | 2022-08-30 | 中海石油(中国)有限公司 | Underwater hydraulic loading telescopic connector |
Citations (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 |
| CN101900235A (en) * | 2010-07-29 | 2010-12-01 | 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 |
| CN103148311A (en) * | 2013-03-22 | 2013-06-12 | 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 |
-
2016
- 2016-12-06 CN CN201611110754.8A patent/CN106402562B/en active Active
Patent Citations (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 |
| CN101900235A (en) * | 2010-07-29 | 2010-12-01 | 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 |
| CN103148311A (en) * | 2013-03-22 | 2013-06-12 | 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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113898790A (en) * | 2020-06-22 | 2022-01-07 | 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 |
| 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 |
| CN114962826A (en) * | 2022-06-16 | 2022-08-30 | 中海石油(中国)有限公司 | Underwater hydraulic loading telescopic connector |
| CN114962826B (en) * | 2022-06-16 | 2024-03-08 | 中海石油(中国)有限公司 | Underwater hydraulic loading telescopic connector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106402562B (en) | 2018-11-02 |
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