CN104295849B - With the large compensation amount External Pressure Type expansion joint that insulation resets - Google Patents
With the large compensation amount External Pressure Type expansion joint that insulation resets Download PDFInfo
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- CN104295849B CN104295849B CN201410522996.2A CN201410522996A CN104295849B CN 104295849 B CN104295849 B CN 104295849B CN 201410522996 A CN201410522996 A CN 201410522996A CN 104295849 B CN104295849 B CN 104295849B
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- corrugated tube
- plate
- ring flat
- insulation
- displacement
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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
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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
- F16L59/00—Thermal insulation in general
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
- F16L59/021—Shape or form of insulating materials, with or without coverings integral with the insulating materials comprising a single piece or sleeve, e.g. split sleeve, two half sleeves
- F16L59/025—Shape or form of insulating materials, with or without coverings integral with the insulating materials comprising a single piece or sleeve, e.g. split sleeve, two half sleeves with more then two segments
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Insulation (AREA)
- Joints Allowing Movement (AREA)
Abstract
The present invention relates to a kind of large compensation amount external pressure expansion joint resetted with insulation, including outer tube and installation interior pipe within the outer tube, one end inner sleeve guide shell of interior pipe, guide shell external connection end pipe, end pipe is provided with the first pressure-bearing ring flat-plate, first pressure-bearing ring flat-plate is fixing with one end of outer tube to be connected, one group of corrugated tube that is coaxial with interior pipe and that be serially connected it is socketed outside interior pipe, in the corrugated tube being serially connected, head section corrugated tube is connected by nipple and ring flat-plate mounted on the inner tube are fixing, rear corrugated tube is connected by nipple and the second pressure-bearing ring flat-plate being arranged on the outer tube other end are fixing, the external oversheath of the other end of outer tube, insulation resetting means is set in oversheath, the equal distribution assembly of displacement it is provided with between adjacent corrugated tube. it is an advantage of the invention that while meeting big displacement quantity compensation requirement, moreover it is possible to meeting the requirement of expansion joint fatigue life, it is ensured that product stability, insulation material can reset with pipeline, it is prevented that heat-insulation layer vacancy, reduces energy consumption.
Description
Technical field
The present invention relates to a kind of expansion joint for pipeline, especially a kind of large compensation amount external pressure expansion joint of corrugated pipe resetted with insulation.
Background technology
Bellows expansion joint is to utilize the telescopic shape change of corrugated tube to absorb because the reason such as expand with heat and contract with cold causes a kind of compensation device of piping displacement or change in size, is widely used in as thermal compensation device in the pipeline of the industries such as petrochemical industry, metallurgy, electric power and heat supply network. External pressure expansion joint of corrugated pipe is mainly by bearing the corrugated tube of external pressure and outer tube and end ring forms, and this expansion joint carrys out extraction duct axial displacement also with the stretcher strain of corrugated tube. Absorbing displacement is one of performance indications weighing expansion joint compensation ability, and the compensation ability absorbing the more big expansion joint of displacement is more strong, and the economy of corresponding pipeline and safety in operation are also more high. Traditional external pressure expansion joint of corrugated pipe problem owing to there is decline fatigue life caused because multistage corrugated tube displacement distribution is uneven, it is only capable of adopting two sections of corrugated tubes to connect, and owing to the axial stability of corrugated tube is poor, limited by manufacturing process simultaneously, the wave number causing every section of corrugated tube is limited, and the global displacement compensation ability ultimately resulting in expansion joint is restricted. Therefore, how to break through restriction, under the premise of the stability and fatigue life requirements that meet product, improve the difficult problem that expansion joint compensation ability becomes urgently to be resolved hurrily at present.
Discovery is retrieved according to applicant, the Chinese patent that publication number is CN203176620 and CN102818083 all discloses a kind of interior external pressure mixed type flexible connecting pipe adopting inner corrugated pipe composition in parallel with outward corrugated tube, interior outward corrugated tube is nested and is possible to prevent post unstability, yet with corrugated tube Limited Number, only have two, make its displacement absorbed also limited, not yet break through the compensation restriction of expansion joint, the requirement of large compensation amount can not be met, and a corrugated tube damages and may result in the damage of whole parallel-connection structure.In the flexible connecting pipe that Chinese patent CN102818083 provides, while first corrugated tube and the 3rd corrugated tube are nested, it is connected further through the second banded penstock and the second corrugated tube, in this structure first, second is identical with the displacement of the 3rd corrugated tube, and the total displacement amount of this structure is first, second or the 3rd displacement of one of corrugated tube, in order to compensate bigger displacement, first, second and the 3rd corrugated tube all can be in series by the pipe of two joint even more more pieces, there will be the phenomenons such as the inhomogeneous deformation that unbalance stress causes during corrugated tube series connection, cause the compensation dosage of distribution on every pipe joint uneven, have impact on the stability of adapter and fatigue life. therefore, in the urgent need to a kind of big displacement adapter meeting uniformity compensation requirement.
For utilidor, the insulation material arranged in it is compressed when thermal expansion of pipeline, when after compression reaction insulation material cannot resilience, cause heat-insulation layer deviation that vacancy occurs, it is impossible to reach the purpose of insulation, add pipeline conveying energy consumption. Current expansion joint compensation ability is little, and insulation space is little, and in design of pipe networks, this section of tubing energy loss is negligible, but when displacement is very big, the loss of heat-insulation layer gap also can not be ignored. So, reset after heat-insulation layer compression the problem being must solve realizing expansion joint big bit shift compensation while.
Summary of the invention
It is an object of the invention to: for above-mentioned prior art Problems existing, a kind of large compensation amount External Pressure Type expansion joint resetted with insulation is proposed, optimize the design of corrugated tube, it is possible not only to compensate bigger axial displacement, stability is good, realize uniformity compensation, also there is the function making heat-insulation layer reset, decrease the energy consumption in pipeline transportation process.
In order to reach object above, the large compensation amount external pressure expansion joint resetted with insulation of the present invention, including outer tube and installation interior pipe within the outer tube, one end inner sleeve guide shell of interior pipe, guide shell external connection end pipe, end pipe is provided with the first pressure-bearing ring flat-plate, first pressure-bearing ring flat-plate is fixing with one end of outer tube to be connected, it thes improvement is that, one group of corrugated tube that is coaxial with interior pipe and that be serially connected it is socketed outside interior pipe, in the corrugated tube being serially connected, head section corrugated tube is connected by nipple and ring flat-plate mounted on the inner tube are fixing, in the corrugated tube being serially connected, rear corrugated tube is connected by nipple and the second pressure-bearing ring flat-plate being arranged on the outer tube other end are fixing, the external oversheath of the other end of outer tube, insulation resetting means is set in oversheath, one end of insulation resetting means is connected with the second pressure-bearing ring flat-plate, the other end contacts with fixed installation toroidal membrane on inner pipe, the equal distribution assembly of displacement it is provided with between adjacent corrugated tube.
Adopt multistage corrugated tube cascaded structure, the compensation quantitative change making expansion joint is big, and the equal distribution assembly of displacement is set between each section of corrugated tube, the equal distribution assembly of displacement solves each section of corrugated tube existed in multi-stage series structure and deforms the problems such as uneven, poor stability, make the displacement that each section of corrugated tube stretches identical, realize the uniformity compensation of each section of corrugated tube, it is to avoid single corrugated tube, because deforming the tensile damage excessively caused, improves the fatigue life of expansion joint.
Preferably, insulation resetting means includes the insulation material of built-in spring, insulation material is arranged in the second axial displacement clearance between toroidal membrane and the second pressure-bearing ring flat-plate, and one end of insulation material is fixing with the second pressure-bearing ring flat-plate to be connected, and the other end contacts with toroidal membrane. Insulation material is made up of heat-preservation cotton and the guard being wrapped in outside heat-preservation cotton, and heat-preservation cotton is soft insulation cotton blanket, and guard is made up of the braiding of soft fine wire. During thermal expansion of pipeline, along with interior pipe slides, insulation material in second axial displacement clearance is compressed by other part insulation materials on pipeline, after thermal expansion terminates, insulation material reinstatement under the effect of spring restoring force, in this course, insulation material is fitted pipeline all the time, and heat insulation effect is good.
Preferably, adjacent corrugated tube is connected with each other by nipple.
Further, the equal distribution assembly of displacement is between outer tube and corrugated tube, the equal distribution assembly of displacement includes at corrugated tube two ends the one group of ring flat-plate being fixed on nipple and the one group of spacing arm-tie being arranged between adjacent two ring flat-plates, wherein the first end of single spacing arm-tie is fixing with the ring flat-plate being positioned at described bellows first end is connected, spacing arm-tie is axially extending to the ring flat-plate being positioned at described corrugated tube the second end, and the second end of spacing arm-tie is provided with limiting plate, the ring flat-plate being positioned at described corrugated tube the second end is arranged on the inner side of limiting plate, and can fix with limiting plate. Limiting plate and have displacement gaps between the ring flat-plate of described corrugated tube the second end, displacement gaps is the axial displacement of corrugated tube.
Further, the equal distribution assembly of displacement is between interior pipe and corrugated tube, positive stop and mounted on the inner tube and be positioned at positive stop on the right side of a group below corrugated tube on the left of the equal distribution assembly of displacement include being arranged on the left of corrugated tube on nipple lower surface a group, wherein single left side positive stop can fix with adjacent right side positive stop. Having displacement gaps between left side positive stop and adjacent right side positive stop, this displacement gaps and corrugated tube displacement match.
Preferably, it is provided with the first axial displacement clearance between the first pressure-bearing ring flat-plate and interior pipe, in the first axial displacement clearance, is provided with guide shell.
Preferably, interior pipe is mutually inserted with end pipe by guide shell, and interior pipe can slide axially along guide shell. The internal one end of heat-preservation cotton is provided with along the axially extended sleeve of insulation material, sets spring in sleeve, and the internal other end of heat-preservation cotton is provided with spring pedestal, spring pedestal is cased with along the axially extended kuppe of insulation material, kuppe and sleeve grafting.
The invention have the advantage that employing multistage corrugated tube cascaded structure, can compensate for bigger axial displacement, and then make up the deficiency that existing expansion joint compensation dosage is little, decrease the quantity of expansion joint in piping, improve the safety of pipeline performance, reach the purpose of cost efficiency, and the distribution of displacement equal distribution assembly acts between each section of corrugated tube, make each section of corrugated tube homogeneous deformation, while meeting big displacement quantity compensation requirement, the requirement of expansion joint fatigue life can also be met, ensure product stability, additionally, spring enables insulation material to restore to the original state along with pipeline resets when pipeline Axial Thermal is flexible, avoid conventional expansion joint base insulating layer that the drawback that big compression displacement cannot reset occurs, prevent heat-insulation layer vacancy, reduce the energy consumption of pipeline medium conveying.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Fig. 1 is the structural representation of the embodiment of the present invention one.
Fig. 2 is the structural representation of the embodiment of the present invention two.
Fig. 3 is the structural representation that the present invention is incubated resetting means.
In figure: 1. the first corrugated tube, 2. the second corrugated tube, 3. the 3rd corrugated tube, 4. the first nipple, 5. the second nipple, 6. the 3rd nipple, 7. the 4th nipple, 8. end pipe, 9. pipe in, 10. the first pressure-bearing ring flat-plate, 11. the second pressure-bearing ring flat-plate, 12. the first ring flat-plate, 13. the second ring flat-plate, 14. the 3rd ring flat-plate, 15. outer tube, 16. toroidal membrane, 17. insulation material, 18. oversheath, 19. the first spacing arm-tie, 20. positive stop on the left of in the of first, 21. positive stop on the right side of in the of first, 22. positive stop on the left of in the of second, 23. positive stop on the right side of in the of second, 24. guide shell, 25. sleeve, 26. spring, 27. spring pedestal, 28. kuppe.
Detailed description of the invention
Embodiment one
The large compensation amount external pressure expansion joint that the present embodiment resets with insulation, its structure is as shown in Figure 1, including outer tube 15 and the interior pipe 9 being arranged in outer tube 15, one end inner sleeve guide shell 24 of interior pipe 9, guide shell 24 external connection end pipe 8, the right-hand member of end pipe 8 is provided with the first pressure-bearing ring flat-plate 10, and the upper end of the first pressure-bearing ring flat-plate 10 is fixed on the left end of outer tube 15, and lower end is fixed on the outer wall of end pipe 8. Being provided with the first axial displacement clearance between first pressure-bearing ring flat-plate 10 and interior pipe 9, be provided with guide shell 24 in the first axial displacement clearance, in so, pipe 9 is mutually inserted with end pipe 8 by guide shell 24 so that interior pipe 9 can slide axially along guide shell 24. It addition, interior pipe 9 is socketed outward first, second, and third corrugated tube 1,2,3 being serially connected, to meet the requirement of axial large compensation amount. The left end of the first corrugated tube 1 is connected by the first nipple 4 is fixing with the first ring flat-plate 12 being arranged on interior pipe 9, the right-hand member of the first corrugated tube 1 is connected with the left end of the second corrugated tube 2 by the second nipple 5, the right-hand member of the second corrugated tube 2 is connected with the left end of the 3rd corrugated tube 3 by the 3rd nipple 6, the right-hand member of the 3rd corrugated tube 3 is connected by the 4th nipple 7 is fixing with the second pressure-bearing ring flat-plate 11 being arranged on outer tube 15 right-hand member, the upper end of the second pressure-bearing ring flat-plate 11 is fixing with the inwall of outer tube 15 to be connected, and lower end is fixing with the upper surface of the 4th nipple 7 to be connected.
The external oversheath 18 of right-hand member at outer tube 15, insulation resetting means is set in oversheath 18, wherein insulation resetting means includes the insulation material 17 of built-in spring, insulation material 17 is arranged in the second axial displacement clearance between toroidal membrane 16 and the second pressure-bearing ring flat-plate 11, and one end of insulation material 17 is fixing with the second pressure-bearing ring flat-plate 11 is connected, the other end contacts with toroidal membrane 16, the upper end of toroidal membrane 16 contacts with oversheath 18, and toroidal membrane 16 can slide along the inwall of oversheath, lower end is fixing with interior pipe 9 to be connected. insulation material 17 is made up of heat-preservation cotton and the guard being wrapped in outside heat-preservation cotton, heat-preservation cotton is soft insulation cotton blanket, specifically adopt alumina silicate fibre blanket, guard is made up of the braiding of soft fine wire, the left end of heat-preservation cotton is provided with the sleeve 25 axially inwardly extended, spring 26 is set in sleeve 25, spring pedestal 27 is set in the right-hand member of heat-preservation cotton, spring pedestal 27 overlaps the internal axially extended kuppe 28 of oriented heat-preservation cotton, kuppe 28 and sleeve 25 grafting, sleeve 25 and kuppe 28 play the effect of guiding, in order to not interfere with compression displacement, adopt segmentation connected structure, both length is mated with compression displacement, so the two forms sheath, for consolidating spring 26, sleeve 25 can be made axially to plug to move (see Fig. 3) along kuppe 28 along with the flexible of spring 26.
The equal distribution assembly of displacement is between outer tube 15 and three sections of corrugated tubes, including at corrugated tube two ends and be fixed on one group of ring flat-plate on nipple and the one group of spacing arm-tie being arranged between adjacent two ring flat-plates. In the present embodiment, it is specifically described for three sections of corrugated tubes, between the first corrugated tube 1 and the second corrugated tube 2, is provided with two groups of equal distribution assembly of displacement, it is simple to the displacement of three sections of corrugated tubes of uniform distribution. One group of equal distribution assembly of displacement includes the first ring flat-plate the 12, second ring flat-plate 13 and the first spacing arm-tie 19, first ring flat-plate 12 is fixed on the first nipple 4, second ring flat-plate 13 is fixed on the second nipple 5, the right flank of the first ring flat-plate 12 is fixed in one end of first spacing arm-tie 19, the other end is axially extending to the second ring flat-plate 13, and it is provided with the first limiting plate at its other end, it is the notch of L-shaped that such first spacing arm-tie 19 and the first limiting plate constitute cross section, make the second ring flat-plate 13 be positioned at the inner side of the first limiting plate, notch, and can fix with the first limiting plate;Another group equal distribution assembly of displacement includes the second ring flat-plate the 13, the 3rd ring flat-plate 14 and the second spacing arm-tie, 3rd ring flat-plate 14 is fixed on the 3rd nipple 6, the left surface of the 3rd ring flat-plate 14 is fixed in one end of second spacing arm-tie, the other end is axially extending to the second ring flat-plate 13, and it is provided with the second limiting plate at its other end, it is the notch of L-shaped that such second spacing arm-tie and the second limiting plate constitute cross section, make the second ring flat-plate 13 be positioned at inside the second limiting plate, notch, and can with second limiting plate fix. First spacing arm-tie 19 and the second spacing arm-tie are arranged along the even circumferential of outer tube 15. Between the right side and the first limiting plate of the second ring flat-plate 13, there is axial displacement gaps, the setting axial displacement being sized to the first corrugated tube of this displacement gaps, between the left side and the second limiting plate of the second ring flat-plate 13, also there is axial displacement gaps, the setting axial displacement being sized to the second corrugated tube 2 of this displacement gaps; Between the right side and the left port of interior pipe 9 of the first pressure-bearing ring flat-plate 10, leave the first axial displacement clearance, the first axial displacement clearance be sized to three sections of corrugated tubes always set axial displacement.
Expansion joint is when compensating pipeline heat displacement amount, and interior pipe 9 moves to the left, drives the first corrugated tube the 1, second corrugated tube 2 and the 3rd corrugated tube 3 axial tension, simultaneously by the insulation material 17 of toroidal membrane 16 inward compression insulation resetting means. In corrugated tube axial tension process, first corrugated tube 1 is first stretched, when the first limiting plate of the first spacing arm-tie 19 and the right flank of the second ring flat-plate 13 fit, the axial tension length of the first corrugated tube 1 reaches it and sets axial displacement, first limiting plate and the second ring flat-plate 13 card are solidly connected, and the first corrugated tube 1 is no longer by axial tension; After first corrugated tube 1 reaches setting axial displacement, interior pipe 9 continues to be moved to the left, second corrugated tube 2 is by axial tension, when the second limiting plate of the second spacing arm-tie and the left surface of the second ring flat-plate 13 fit, the axial tension length of the second corrugated tube 2 reaches it and sets axial displacement, second limiting plate and the second ring flat-plate 13 card are solidly connected, and the second corrugated tube 2 is no longer by axial tension; After first corrugated tube the 1, second corrugated tube 2 all reaches setting axial displacement, interior pipe 9 continues to be moved to the left, 3rd corrugated tube 3 is stretched, when interior pipe 9 moves to the left end of the first axial displacement clearance along guide shell 24, what the global displacement amount of expansion joint reached three sections of corrugated tubes always sets displacement, and the 3rd corrugated tube 3 also reaches the axial displacement set, and finally makes three sections of corrugated tube stretching displacement amounts equal, deformation uniformly, reaches to ensure the purpose that expansion joint designs fatigue life. It addition, when pipeline resets, insulation material 17 can reinstatement under the effect of within it spring, it is to avoid heat-insulation layer vacancy.
Embodiment two
The present embodiment and embodiment one are different in that: the equal distribution assembly of displacement is between interior pipe 9 and three sections of corrugated tubes, including positive stop on the left of a group be arranged on the left of corrugated tube on nipple lower surface be arranged on interior pipe 9 and be positioned at positive stop on the right side of a group below corrugated tube. The equal distribution assembly of displacement of the present embodiment, its structure is as shown in Figure 2, including positive stop 23 on the right side of positive stop 22 and second on the left of positive stop 21, second on the right side of positive stop 20, first on the left of first, wherein positive stop 20 is fixed on the lower surface of the second nipple 5 on the left of first, on the left of in the of second, positive stop 22 is fixed on the lower surface of the 3rd nipple 6, and on the right side of in the of first, on the right side of positive stop 21 and second, positive stop 23 is fixed on the outer wall of interior pipe 9.During resting state, between positive stop 21, there is axial displacement gaps on the right side of positive stop 20 and first on the left of the first of expansion joint, the setting axial displacement being sized to the first corrugated tube 1 of this displacement gaps, on the left of second, between positive stop 23, also there is axial displacement gaps on the right side of positive stop 22 and second, the setting axial displacement sum being sized to the first corrugated tube 1 and the second corrugated tube 2 of this displacement gaps. It addition, leave the first axial displacement clearance between the right side and the left port of interior pipe 9 of the first pressure-bearing ring flat-plate 10, the first axial displacement clearance be sized to three sections of corrugated tubes always set axial displacement.
Expansion joint is when compensating pipeline heat displacement amount, interior pipe 9 moves to the left, drive the first corrugated tube 1, second corrugated tube 2 and the 3rd corrugated tube 3 axial tension, drive on the right side of in the of be fixed on interior pipe 9 first positive stop 23 on the right side of positive stop 21 and second to be moved to the left simultaneously, when interior pipe 9 moves to the left end of the first axial displacement clearance along guide shell 24, what expansion joint global displacement amount reached three sections of corrugated tubes always sets displacement, on the left of in the of first, on the right side of the right flank and first of positive stop 20, the left surface of positive stop 21 fits, on the left of in the of second, on the right side of the right flank and second of positive stop 22, the left surface of positive stop 23 fits, three sections of corrugated tubes stop stretching, now the stretching displacement amount of three sections of corrugated tubes is impartial, deformation is uniformly.
In addition to the implementation, the present invention can also have other embodiments. Steel plate and studs fit system and steel wire rope etc. such as also can be adopted between each section of corrugated tube as the equal distribution assembly of displacement. All employings are equal to replacement or the technical scheme of equivalent transformation formation, all fall within the protection domain of application claims.
Claims (10)
1. the large compensation amount external pressure expansion joint resetted with insulation, including outer tube and installation interior pipe within the outer tube, one end inner sleeve guide shell of said inner tube, described guide shell external connection end pipe, described end pipe is provided with the first pressure-bearing ring flat-plate, described first pressure-bearing ring flat-plate is fixing with one end of outer tube to be connected, it is characterized in that: outside said inner tube, be socketed one group of corrugated tube that is coaxial with interior pipe and that be serially connected, in the described corrugated tube being serially connected, head section corrugated tube is connected by nipple and ring flat-plate mounted on the inner tube are fixing, in the described corrugated tube being serially connected, rear corrugated tube is connected by nipple and the second pressure-bearing ring flat-plate being arranged on the outer tube other end are fixing, the external oversheath of the other end of described outer tube, insulation resetting means is set in described oversheath, one end of described insulation resetting means is connected with the second pressure-bearing ring flat-plate, the other end contacts with fixed installation toroidal membrane on inner pipe, the equal distribution assembly of displacement it is provided with between adjacent described corrugated tube.
2. the large compensation amount external pressure expansion joint resetted with insulation according to claim 1, it is characterized in that: described insulation resetting means includes the insulation material of built-in spring, described insulation material is arranged in the second axial displacement clearance between toroidal membrane and the second pressure-bearing ring flat-plate, one end of described insulation material is fixing with the second pressure-bearing ring flat-plate to be connected, and the other end contacts with toroidal membrane.
3. the large compensation amount external pressure expansion joint resetted with insulation according to claim 1, is characterized in that: adjacent described corrugated tube is connected with each other by nipple.
4. the large compensation amount external pressure expansion joint resetted with insulation according to claim 3, it is characterized in that: the equal distribution assembly of described displacement includes at corrugated tube two ends the one group of ring flat-plate being fixed on nipple and the one group of spacing arm-tie being arranged between adjacent two ring flat-plates, wherein the first end of single described spacing arm-tie is fixing with the ring flat-plate being positioned at bellows first end is connected, described spacing arm-tie is axially extending to the ring flat-plate being positioned at described corrugated tube the second end, and the second end of described spacing arm-tie is provided with limiting plate, the ring flat-plate being positioned at described corrugated tube the second end is arranged on the inner side of limiting plate, and can fix with described limiting plate.
5. the large compensation amount external pressure expansion joint resetted with insulation according to claim 4, is characterized in that: described limiting plate and have displacement gaps between the ring flat-plate of described corrugated tube the second end, and described displacement gaps is the axial displacement of corrugated tube.
6. the large compensation amount external pressure expansion joint resetted with insulation according to claim 3, it is characterized in that: positive stop and mounted on the inner tube and be positioned at positive stop on the right side of a group below corrugated tube on the left of the equal distribution assembly of described displacement include being arranged on the left of corrugated tube on nipple lower surface a group, wherein single described left side positive stop can fix with adjacent right side positive stop.
7. the large compensation amount external pressure expansion joint resetted with insulation according to claim 6, is characterized in that: having displacement gaps between described left side positive stop and adjacent right side positive stop, described displacement gaps and corrugated tube displacement match.
8. the large compensation amount external pressure expansion joint resetted with insulation according to claim 1, is characterized in that: be provided with the first axial displacement clearance between described first pressure-bearing ring flat-plate and interior pipe, be provided with guide shell in described first axial displacement clearance.
9. the large compensation amount external pressure expansion joint resetted with insulation according to claim 8, is characterized in that: said inner tube is mutually inserted with end pipe by guide shell, and said inner tube can slide axially along guide shell.
10. the large compensation amount external pressure expansion joint resetted with insulation according to claim 2, it is characterized in that: described insulation material is made up of heat-preservation cotton and the guard being wrapped in outside heat-preservation cotton, described heat-preservation cotton is soft insulation cotton blanket, and described guard is made up of the braiding of soft fine wire; The internal one end of described heat-preservation cotton is provided with sleeve, sets spring in described sleeve, and the internal other end of described heat-preservation cotton is provided with spring pedestal, and described spring pedestal is cased with kuppe, described kuppe and sleeve grafting.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410522996.2A CN104295849B (en) | 2014-09-30 | 2014-09-30 | With the large compensation amount External Pressure Type expansion joint that insulation resets |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410522996.2A CN104295849B (en) | 2014-09-30 | 2014-09-30 | With the large compensation amount External Pressure Type expansion joint that insulation resets |
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| CN104295849B true CN104295849B (en) | 2016-06-08 |
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| CN104847986B (en) * | 2015-05-27 | 2017-02-01 | 大连科华热力管道有限公司 | Closing device for steam pipe |
| CN107035966A (en) * | 2017-05-22 | 2017-08-11 | 上海宇航系统工程研究所 | A kind of carrier rocket gas cylinder fixing device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2338586Y (en) * | 1998-08-18 | 1999-09-15 | 南京晨光东螺波纹管有限公司 | Full sealed and built-in type corrugated compensation arrangement |
| US5967193A (en) * | 1996-05-29 | 1999-10-19 | Calsonic Corporation | Flexible pipe unit for use in exhaust pipe line of automotive engine |
| CN201661811U (en) * | 2010-03-19 | 2010-12-01 | 江苏扬光机械制造有限公司 | Coaxial two-way external compression type expansion joint |
| CN102818083A (en) * | 2012-09-04 | 2012-12-12 | 航天晨光股份有限公司 | Internal and external pressure mixed type straight pipe pressure balance flexible connecting pipe |
| CN202901675U (en) * | 2012-10-08 | 2013-04-24 | 江苏恒丰波纹管有限公司 | Maintenance-free external pressure directly-buried expansion joint |
| CN203823331U (en) * | 2014-03-06 | 2014-09-10 | 泰州汇海管件科技有限公司 | Maintenance-free directly buried two-way external pressure corrugated compensator |
-
2014
- 2014-09-30 CN CN201410522996.2A patent/CN104295849B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5967193A (en) * | 1996-05-29 | 1999-10-19 | Calsonic Corporation | Flexible pipe unit for use in exhaust pipe line of automotive engine |
| CN2338586Y (en) * | 1998-08-18 | 1999-09-15 | 南京晨光东螺波纹管有限公司 | Full sealed and built-in type corrugated compensation arrangement |
| CN201661811U (en) * | 2010-03-19 | 2010-12-01 | 江苏扬光机械制造有限公司 | Coaxial two-way external compression type expansion joint |
| CN102818083A (en) * | 2012-09-04 | 2012-12-12 | 航天晨光股份有限公司 | Internal and external pressure mixed type straight pipe pressure balance flexible connecting pipe |
| CN202901675U (en) * | 2012-10-08 | 2013-04-24 | 江苏恒丰波纹管有限公司 | Maintenance-free external pressure directly-buried expansion joint |
| CN203823331U (en) * | 2014-03-06 | 2014-09-10 | 泰州汇海管件科技有限公司 | Maintenance-free directly buried two-way external pressure corrugated compensator |
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|---|---|
| CN104295849A (en) | 2015-01-21 |
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