CN103836292A - Compound straight pipe bypass externally-pressing type pressure balance expansion joint - Google Patents
Compound straight pipe bypass externally-pressing type pressure balance expansion joint Download PDFInfo
- Publication number
- CN103836292A CN103836292A CN201410101163.9A CN201410101163A CN103836292A CN 103836292 A CN103836292 A CN 103836292A CN 201410101163 A CN201410101163 A CN 201410101163A CN 103836292 A CN103836292 A CN 103836292A
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- Prior art keywords
- balance
- bellows
- expansion joint
- corrugated pipe
- blind plate
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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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints Allowing Movement (AREA)
Abstract
The invention discloses a compound straight pipe bypass externally-pressing type pressure balance expansion joint. According to the technical scheme, the compound straight pipe bypass externally-pressing type pressure balance expansion joint comprises two balance corrugated pipes and a sealing corrugated pipe, wherein the balance corrugated pipes are provided with pull rod assemblies, and the sealing corrugated pipe is of a sealing structure. One end of each balance corrugated pipe is connected with a connecting pipe, the other end of the balance corrugated pipe is connected with the sealing corrugated pipe, one connecting pipe is connected with one end of the sealing corrugated pipe through a welding ring in a sliding mode, the other end of the sealing corrugated pipe is fixedly connected with the other balance corrugated pipe, the two balance corrugated pipes with the pull rod assemblies are symmetrically distributed at the two ends of an outer sheath, a left air hole and a right air hole are formed in two shell rings connected with the sealing corrugated pipe respectively, a left blind plate and a right blind plate are arranged inside the sealing corrugated pipe, a sealed space is formed inside the sealing corrugated pipe, a hose penetrates through the right blind plate, is used for fixing the shell rings, at the connecting ends, of the balance corrugated pipes, and is connected with a water drainage port in the outer sheath. The compound straight pipe bypass externally-pressing type pressure balance expansion joint has the following advantages that thermal deformation and axial displacement stress can be absorbed, the rigidity and the boundary dimension of the expansion joint are small.
Description
Technical field
The present invention relates to expansion joint application, relate in particular to compound straight tube bypass external pressure balance expansion joint.
Background technique
Expansion joint more and more uses on metallurgy, oil, heat supply network official road, especially general straight-through type expansion joint can compensate the thermal distortion that pipeline causes due to high temperature, high pressure, although can heat-absorbing deformation, can not compensating axial thrust, and they generally bulky, cost is high.
Summary of the invention
In order to address the above problem, the object of this invention is to provide a kind of compound straight tube bypass external pressure balance expansion joint, this expansion joint has three bellowss, and wherein two is balance bellows, and middle one is seal bellows.The thermal distortion so both can extraction duct Yin Gaowen causing, the end thrust producing in again can bucking-out system, and the present invention has, and rigidity is little, boundary dimension is little, compensation effect outstanding feature.
To achieve these goals, technological scheme of the present invention is achieved in that compound straight tube bypass external pressure balance expansion joint, it comprises the balance bellows 3 of two groups of band pull bar combinations and the seal bellows 7 of sealing configuration, described balance bellows 3 one end are connected with adapter 14, the other end is connected with described seal bellows 7, on described adapter 14 outer surfaces, be symmetrical arranged two risers 1, pull bar 13 couples together described adapter 14 and described oversheath 8 by described riser 1, nut 2 is fixed on described pull bar 13 on described riser 1, wherein described in one group, taking over 14 is slidably connected by weld-ring 5 with one end of described seal bellows 7, described weld-ring 5 is fixedly connected with described oversheath 8, and described oversheath 8 sealing parts are provided with seal ring 4, the other end of described seal bellows 7 is fixedly connected with balance bellows 3 described in other a group, the balance bellows 3 of described two groups of band pull bars combination is symmetrically distributed in the two ends of described oversheath 8, joint is provided with stiffening ring 12, connect on two shell rings of described seal bellows 7 and have respectively left pore 6 and right pore 9, described seal bellows 7 inside are provided with left blind plate 15 and right blind plate 16, described left blind plate 15, right blind plate 16, seal bellows 7 forms a seal space, flexible pipe 11 is through described right blind plate 16, the shell ring that is fixedly connected with the described balance bellows 3 of end is connected with the drain port 10 on described oversheath 8.
Further, described balance bellows 3, seal bellows 7 are the identical ripple original paper of geometric parameter and the flexible element of taking over formation.
Further, described left pore 6, right pore 9 area sum separately equals respectively cross-section of pipeline area.
Further, described flexible pipe 11 external layers are wire, and nexine is that high temperature resistant, corrosion-resistant material is made.
The present invention has following beneficial effect: the bellows with pull bar in the present invention absorbs lateral displacement stress, and compound structure is more stable.And the bellows absorption axes of by-pass structure is to displacement stress, the end thrust being caused by interior pressure like this will can not be passed to the related facilities such as equipment in pipeline system, container, pipe support.The present invention also has that rigidity is little, boundary dimension is little, compensation effect outstanding feature.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described in detail.
With reference to accompanying drawing 1 description of symbols: 1, riser, 2, nut, 3, balance bellows, 4, seal ring, 5, weld-ring, 6, left pore, 7, seal bellows, 8, oversheath, 9, right pore, 10, drain port, 11, flexible pipe, 12, stiffening ring, 13, pull bar, 14, take over 15, left blind plate, 16, right blind plate.
The compound straight tube bypass of the present invention external pressure balance expansion joint, it comprises the balance bellows 3 of two groups of band pull bar combinations and the seal bellows 7 of sealing configuration, described balance bellows 3 one end are connected with adapter 14, the other end is connected with described seal bellows 7, on described adapter 14 outer surfaces, be symmetrical arranged two risers 1, pull bar 13 couples together described adapter 14 and described oversheath 8 by described riser 1, nut 2 is fixed on described pull bar 13 on described riser 1, wherein described in one group, taking over 14 is slidably connected by weld-ring 5 with one end of described seal bellows 7, described weld-ring 5 is fixedly connected with described oversheath 8, and described oversheath 8 sealing parts are provided with seal ring 4, the other end of described seal bellows 7 is fixedly connected with balance bellows 3 described in other a group, the balance bellows 3 of described two groups of band pull bars combination is symmetrically distributed in the two ends of described oversheath 8, joint is provided with stiffening ring 12, play the effect of enhanced leaktightness.Connect on two shell rings of described seal bellows 7 and have respectively left pore 6 and right pore 9, described left pore 6, right pore 9 area sum separately equal respectively cross-section of pipeline area.Described seal bellows 7 inside are provided with left blind plate 15 and right blind plate 16, described left blind plate 15, right blind plate 16, seal bellows 7 form a seal space, flexible pipe 11 is connected with the drain port 10 on described oversheath 8 through described right blind plate 16, the shell ring that is fixedly connected with the described balance bellows 3 of end, flexible pipe 11 is channels of communication seals space and external environment, described flexible pipe 11 external layers are wire, and nexine is that high temperature resistant, corrosion-resistant material is made.
In the present embodiment, described balance bellows 3, seal bellows 7 are the identical ripple original paper of geometric parameter and the flexible element of taking over formation.
Finally explanation is, above embodiment is only unrestricted in order to technological scheme of the present invention to be described, other amendments that those of ordinary skill in the art make technological scheme of the present invention or be equal to replacement, only otherwise depart from the spirit and scope of technical solution of the present invention, all should be encompassed in the middle of claim scope of the present invention.
Claims (4)
1. compound straight tube bypass external pressure balance expansion joint, it comprises the balance bellows (3) of two groups of band pull bar combinations and the seal bellows (7) of sealing configuration, it is characterized in that, described balance bellows (3) one end is connected with adapter (14), the other end is connected with described seal bellows (7), on described adapter (14) outer surface, be symmetrical arranged two risers (1), pull bar (13) couples together described adapter (14) and described oversheath (8) by described riser (1), nut (2) is fixed on described pull bar (13) on described riser (1), wherein described in one group, taking over (14) is slidably connected by weld-ring (5) with one end of described seal bellows (7), described weld-ring (5) is fixedly connected with described oversheath (8), and described oversheath (8) sealing part is provided with seal ring (4), the other end of described seal bellows (7) is fixedly connected with balance bellows (3) described in other a group, the balance bellows (3) of described two groups of band pull bars combination is symmetrically distributed in the two ends of described oversheath (8), joint is provided with stiffening ring (12), connect on two shell rings of described seal bellows (7) and have respectively left pore (6) and right pore (9), described seal bellows (7) inside is provided with left blind plate (15) and right blind plate (16), described left blind plate (15), right blind plate (16), seal bellows (7) forms a seal space, flexible pipe (11) is through described right blind plate (16), the shell ring that is fixedly connected with the described balance bellows (3) of end is connected with the drain port (10) on described oversheath (8).
2. compound straight tube bypass external pressure balance expansion joint according to claim 1, is characterized in that, described balance bellows (3), seal bellows (7) are the identical ripple original paper of geometric parameter and the flexible element of taking over formation.
3. compound straight tube bypass external pressure balance expansion joint according to claim 1, is characterized in that, described left pore (6), right pore (9) area sum separately equal respectively cross-section of pipeline area.
4. compound straight tube bypass external pressure balance expansion joint according to claim 1, is characterized in that, described flexible pipe (11) external layer is wire, and nexine is that high temperature resistant, corrosion-resistant material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410101163.9A CN103836292B (en) | 2014-03-19 | 2014-03-19 | Compound straight tube bypass external pressure balance expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410101163.9A CN103836292B (en) | 2014-03-19 | 2014-03-19 | Compound straight tube bypass external pressure balance expansion joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103836292A true CN103836292A (en) | 2014-06-04 |
| CN103836292B CN103836292B (en) | 2016-03-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410101163.9A Active CN103836292B (en) | 2014-03-19 | 2014-03-19 | Compound straight tube bypass external pressure balance expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103836292B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061398A (en) * | 2014-06-25 | 2014-09-24 | 苏荣华 | Rubber-ring sealed by-pass pressure-balance sleeve compensator |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4239267A (en) * | 1979-09-10 | 1980-12-16 | The Dow Chemical Company | Internal-bellows, pressure-balanced, angled-flowpath expansion joint |
| US6382682B1 (en) * | 2000-09-21 | 2002-05-07 | Tozen Sangyo Co., Ltd. | Extendable pipe joint |
| CN201162914Y (en) * | 2008-01-03 | 2008-12-10 | 上海沪强管道设备有限公司 | High pressure by-pass type straight pipe pressure balancing type corrugated compensator |
| CN202252582U (en) * | 2011-10-29 | 2012-05-30 | 重庆川仪自动化股份有限公司 | External-pressure straight-pipe pressure balance type bellow expansion joint |
| CN203162422U (en) * | 2013-01-13 | 2013-08-28 | 江苏贝特管件有限公司 | Internal-external pressure balanced corrugated compensator |
-
2014
- 2014-03-19 CN CN201410101163.9A patent/CN103836292B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4239267A (en) * | 1979-09-10 | 1980-12-16 | The Dow Chemical Company | Internal-bellows, pressure-balanced, angled-flowpath expansion joint |
| US6382682B1 (en) * | 2000-09-21 | 2002-05-07 | Tozen Sangyo Co., Ltd. | Extendable pipe joint |
| CN201162914Y (en) * | 2008-01-03 | 2008-12-10 | 上海沪强管道设备有限公司 | High pressure by-pass type straight pipe pressure balancing type corrugated compensator |
| CN202252582U (en) * | 2011-10-29 | 2012-05-30 | 重庆川仪自动化股份有限公司 | External-pressure straight-pipe pressure balance type bellow expansion joint |
| CN203162422U (en) * | 2013-01-13 | 2013-08-28 | 江苏贝特管件有限公司 | Internal-external pressure balanced corrugated compensator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104061398A (en) * | 2014-06-25 | 2014-09-24 | 苏荣华 | Rubber-ring sealed by-pass pressure-balance sleeve compensator |
| CN104061398B (en) * | 2014-06-25 | 2016-08-24 | 苏荣华 | The processing method of rubber sealing bypass pressure balancing sleeve compensator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103836292B (en) | 2016-03-02 |
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