CN103867844A - Maintenance-free directly buried two-way external pressure bellows compensator - Google Patents
Maintenance-free directly buried two-way external pressure bellows compensator Download PDFInfo
- Publication number
- CN103867844A CN103867844A CN201410078426.9A CN201410078426A CN103867844A CN 103867844 A CN103867844 A CN 103867844A CN 201410078426 A CN201410078426 A CN 201410078426A CN 103867844 A CN103867844 A CN 103867844A
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- Prior art keywords
- external pressure
- tube
- outer tube
- bellows
- pipe
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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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- 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
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
- F16L57/06—Protection of pipes or objects of similar shape against external or internal damage or wear against wear
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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
- F16L59/14—Arrangements for the insulation of pipes or pipe systems
- F16L59/16—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like
- F16L59/21—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like adapted for expansion-compensation devices
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Insulation (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention discloses a maintenance-free directly buried two-way external pressure bellows compensator, which comprises inner pipes, adapters, thermal insulation material, outer annular plates, an outer pipe, inner annular plates, a flow guide pipe, long bellows, a housing, short bellows, filler and baffles. The two inner pipes are mounted in the hole of the outer pipe, the flow guide pipe is arranged between the two spaced inner pipes, the long bellows, the inner annular plates, the short bellows, the outer annular plates and the adapters are sequentially sleeved and tightly connected with the outer walls of the inner pipes from the inner ends to the outer ends, and thereby an external pressure compensation structure which can move along with the inner pipes is formed. The housing is coaxially sleeved on the outer pipe, and the thermal insulation material is filled up in the gap between the housing and the outer pipe to form a thermal insulation layer. The orifices of the housing are directly sealed by the baffles which are fixedly connected with both ends of the outer pipe, and the holes of the baffles are smaller than the outer diameter of the outer annular plates, so that an axial anti-separation structure for the outer pipe is formed. In order to achieve the purpose of maintenance-freeness in the lifetime, chrome platings are added on the walls of the thin-walled inner pipes and the thin-walled outer pipe, which move relative to each other.
Description
Technical field
The present invention relates to a kind of pipe safety device, specifically, the present invention relates to a kind of pipe line compensating device, a kind of supporting pipeline compensator in buried pipe network.
Background technique
In city heat supply and industrial pipe network often because of structure or technological requirement, pipe network is partly or entirely directly embedded in underground, for guaranteeing the pipeline compensator reliable operation supporting with buried pipe network, must be on the pipeline compensator of conventional structure supporting case.The ground-burying type pipe compensator being in case can be protected accordingly structure, except exempting from the obstruction of periphery earth, also reaches good heat insulation effect.But the ground-burying type pipe compensator of prior art lacks axial limit structure to the case of configuration, goes through compensating movement frequently between the spreadable life, external case easily axially channels bit with the generation of built-in pipe compensator.The excessive working environment that must worsen built-in pipe compensator that channels bit of case, the most obvious problem is periphery clay contaminated shaft seal, reduces heat insulation effect.In addition, the shaft seal structure of prior art products exposes, and does nose balance when motion easily to form condition of negative pressure and suck earth dirt, the dirt of accumulation is sneaked into shaft seal structure and just worsens the working environment of sealing pair, strengthen wear extent, dwindle compensation space, finally cause the worn out damage of bellows.Ground-burying type pipe compensator is underground because being embedded in, inconvenience is directly observed, and can not find in time if there are the problems referred to above, can not get timely correction, the problem of accumulation easily forms potential safety hazard, and the external case positional stability of ground-burying type pipe compensator seems very important thus.
Summary of the invention
The present invention is stable poor mainly for the case axial position in prior art products, easily channels bit problem, propose a kind of axial limiting reliable, simple in structure, make the two-way external pressure FlexbleJoint of non-maintaining directly buried type easy, easy for installation.
The present invention is achieved through the following technical solutions technical goal.
The two-way external pressure FlexbleJoint of non-maintaining directly buried type, it comprises inner tube, adapter, thermal insulating material, outer ring plate, outer tube, inner ring plate, honeycomb duct, lengthy bellows, case, short corrugated pipe, filler and baffle plate.Described outer tube is straight pipe, outer pipe orifice is equipped with two inner tubes that specification is identical but towards the opposite, liner honeycomb duct between two axial alternate inner tubes, on outer wall of inner tube, be set with successively and be tightly connected from inside to outside lengthy bellows, inner ring plate, short corrugated pipe, outer ring plate and adapter, form the external pressure collocation structure moving with inner tube thus.Described outer ring plate ring cylindrical wall is provided with groove embedded sealing ring, seal ring and the outer tube wall formation shaft seal that is slidably matched.Described short corrugated pipe is a kind of rubber mass bellows, and between the outer wall of short corrugated pipe and outer tube, gap is pressed 50%～70% of volume and loaded filler.Its improvements are: described case is circular tube shaped, case and outer coaxial tube gap fit, in both gaps, tamp thermal insulating material and form into thermal insulation layer, the direct plugging hood faucal of the baffle plate portion that outer tube two is fixedly connected with, baffle plate endoporus is less than outer ring plate external diameter and forms outer axial tube to disconnecting prevention structure.Described adapter overcoat pillar, nozzle inner wall coordinates slug dress thermal insulating material with outer wall of inner tube, and this structure, except to inner tube insulation, also forms the proofing dust and protecting to shaft seal.
Thermal insulating material described in said structure is polyurethane foam plastics, and filler is super glass vinylon and cotton blend, and the pillar being set with on case and adapter outer wall is PE pipe.In order to improve the wear resistance of inner and outer tubes, coordinate section surface chromium plating in inner tube with outer ring plate with the inner ring plate section of cooperation and outer tube, chromium plating bed thickness 0.10mm～0.30mm, increases wearing layer and can realize object non-maintaining between the spreadable life.Case endoporus and outer tube outer wall diameter are poor is 50mm～60mm.Described short corrugated pipe is a kind of rubber mass bellows.
The present invention compared with prior art, has following good effect:
1, on outer tube outer wall, configure thermal insulation layer, simple in structure, high insulating effect;
2, the baffle plate internal diameter that outer tube two ends are fixedly connected with is less than outer ring plate external diameter, effectively prevents external thermal insulation layer play or slippage;
3, shaft seal, by the adjacent insulating structure block in outer end, has been improved shaft seal working environment, avoids earth to sneak into shaft seal, effectively improves the working life of shaft seal;
4, have on relative movement tube wall and set up chromium coating in the inner and outer tubes of thin-walled, effectively improve wear-resisting property, easily realize non-maintaining object in operational phase.
Brief description of the drawings
Fig. 1 is that structure of the present invention is partly cutd open schematic diagram.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, the invention will be further described.
The two-way external pressure FlexbleJoint of non-maintaining directly buried type shown in Fig. 1, it comprises inner tube 1, adapter 2, thermal insulating material 3, outer ring plate 4, outer tube 5, inner ring plate 6, honeycomb duct 7, lengthy bellows 8, case 9, short corrugated pipe 10, filler 11 and baffle plate 12.Described outer tube 5 is straight pipe, be main component, outer tube 5 endoporus are equipped with two inner tubes 1 that specification is identical but towards the opposite, and one end that inner tube 1 has a flange edge inwardly, liner honeycomb duct 7 between two axial alternate inner tubes 1, honeycomb duct 7 is fixedly connected with inner tube 1 inwall of entrance point.On inner tube 1 outer wall, be set with successively from inside to outside and be tightly connected lengthy bellows 8, inner ring plate 6, short corrugated pipe 10, outer ring plate 4 and take over 2, form the moving external pressure collocation structure with inner tube 1 thus.The present invention is symplex structure, two differences towards external pressure collocation structure can make bidirectional compensating simultaneously, also can separate compensation.Described outer ring plate 4 encircles cylindrical wall and is provided with groove embedded sealing ring 4.1, seal ring 4.1 and the outer tube 5 inwalls formation shaft seal that is slidably matched.In order to prevent that shaft seal from forming negative pressure while moving; the present invention is set with pillar 2.1 on adapter 2 outer walls in shaft seal outside; take over 2 inwalls and coordinate slug dress thermal insulating material 3 with inner tube 1 outer wall; this structure is except being incubated inner tube 1; also form the proofing dust and protecting to shaft seal; avoid earth to sneak in shaft seal, effectively improve the working life of shaft seal.Described lengthy bellows 8 and short corrugated pipe 10 are all elastic compensating elements, lengthy bellows 8 is stainless steel, short corrugated pipe 10 is rubber mass, in order to prevent at high temperature unstability of short corrugated pipe 10, the present invention presses gap between the outer wall of shortwave pipe 10 and outer tube 5 50%～70% of volume and loads filler 11.The present embodiment medium temperature is 360 DEG C, and built-in filler 11 is selected super glass vinylon and cotton blend, and the amount of inserting is 50% of both void volumes.Described case 9 is in the outermost surface of structure, is PE pipe.Case 9 and outer tube 5 concentric gap fits tamp thermal insulating material 3 and form thermal insulation layer in both gaps.In the present embodiment the diameter of case 9 endoporus and outer tube 5 outer walls poor be 50mm, the thermal insulating material 3 tamping in gap is during this time polyurethane foam plastics, the thermal insulation layer of this thickness can meet the insulation requirement of built-in collocation structure.In order to prevent the unordered play of outer tube 5 or slippage, the present invention is at outer tube 5 two ends fixed dams 12, and baffle plate 12 external diameters coordinate with case 9 endoporus, and baffle plate 12 endoporus are less than outer ring plate 4 external diameters, makes the outer tube 5 must not axial float or slippage, guarantees collocation structure reliable operation.The present invention is in order to realize object non-maintaining within the spreadable life, has on the tube wall of relative movement set up chromium coating at the inner tube 1 of thin walled structures and outer tube 5, effectively improves the abrasive resistance between counterpart.Chromium plating bed thickness 0.2mm in the present embodiment, can accomplish that 25 year spreadable life is interior non-maintaining, greatly saves user's user cost.
Claims (7)
1. the two-way external pressure FlexbleJoint of non-maintaining directly buried type, it comprises inner tube (1), takes over (2), thermal insulating material (3), outer ring plate (4), outer tube (5), inner ring plate (6), honeycomb duct (7), lengthy bellows (8), case (9), short corrugated pipe (10), filler (11) and baffle plate (12); Described outer tube (5) is straight pipe, outer tube (5) endoporus is equipped with two inner tubes (1) that specification is identical but towards the opposite, liner honeycomb duct (7) between two axial alternate inner tubes (1), on inner tube (1) outer wall, be set with successively from inside to outside and the lengthy bellows that is tightly connected (8), inner ring plate (6), short corrugated pipe (10), outer ring plate (4) and adapter (2), form thus the moving external pressure collocation structure with inner tube (1); Described outer ring plate (4) ring cylindrical wall is provided with groove embedded sealing ring (4.1), seal ring (4.1) and outer tube (5) the inwall formation shaft seal that is slidably matched; Described short corrugated pipe (10) is a kind of nonmetal bellows, and between the outer wall of short corrugated pipe (10) and outer tube (5), gap is pressed 50%～70% of volume and loaded filler (11); It is characterized in that: described case (9) is circular tube shaped, case (9) and outer tube (5) concentric gap fit, in both gaps, tamp thermal insulating material (3) and form into thermal insulation layer, the baffle plate (12) that outer tube (5) two is fixedly connected with is shutoff case (9) oral area directly, and baffle plate (12) endoporus is less than outer ring plate (4) external diameter and forms axially disconnecting prevention structure of outer tube (5); Described adapter (2) overcoat pillar (2.1), takes over (2) inwall and coordinates slug dress thermal insulating material (3) with inner tube (1) outer wall, and this structure, except to inner tube (1) insulation, also forms the proofing dust and protecting to shaft seal.
2. the two-way external pressure FlexbleJoint of non-maintaining directly buried type according to claim 1, is characterized in that: described thermal insulating material (3) is polyurethane foam plastics.
3. the two-way external pressure FlexbleJoint of non-maintaining directly buried type according to claim 1, is characterized in that: the pillar (2.1) being set with on described case (9) and adapter (2) outer wall is PE pipe.
4. the two-way external pressure FlexbleJoint of non-maintaining directly buried type according to claim 1, is characterized in that: described filler (11) is super glass vinylon and cotton blend.
5. the two-way external pressure FlexbleJoint of non-maintaining directly buried type according to claim 1, is characterized in that: described inner tube (1) coordinates section surface chromium plating with outer ring plate (4), chromium plating bed thickness 0.10mm～0.30mm with inner ring plate (6) section of cooperation and outer tube (5).
6. the two-way external pressure FlexbleJoint of non-maintaining directly buried type according to claim 1, is characterized in that: described case (9) endoporus and outer tube (5) outer diameter are poor is 50mm～60mm.
7. the two-way external pressure FlexbleJoint of non-maintaining directly buried type according to claim 1, is characterized in that: described short corrugated pipe (10) is a kind of rubber mass bellows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410078426.9A CN103867844B (en) | 2014-03-06 | 2014-03-06 | The two-way external pressure FlexbleJoint of non-maintaining directly buried type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410078426.9A CN103867844B (en) | 2014-03-06 | 2014-03-06 | The two-way external pressure FlexbleJoint of non-maintaining directly buried type |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103867844A true CN103867844A (en) | 2014-06-18 |
| CN103867844B CN103867844B (en) | 2016-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410078426.9A Active CN103867844B (en) | 2014-03-06 | 2014-03-06 | The two-way external pressure FlexbleJoint of non-maintaining directly buried type |
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| CN (1) | CN103867844B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104948872A (en) * | 2015-06-11 | 2015-09-30 | 洛阳双瑞特种装备有限公司 | Expansion joint provided with elastic sealing structure and used for thermal insulation pipeline |
| CN106122658A (en) * | 2016-09-08 | 2016-11-16 | 江苏五星波纹管有限公司 | Direct-burried external pressure triple seal height anti-corrosion type corrugated sleeve compensator |
| CN107606370A (en) * | 2017-10-13 | 2018-01-19 | 江苏恒润波纹管有限公司 | A kind of bellows component with slip-preventing structure |
| CN115076494A (en) * | 2022-05-16 | 2022-09-20 | 刘晨 | Double-flow outward pressure type compensator and implementation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2168156Y (en) * | 1993-05-26 | 1994-06-08 | 于宁 | External pressure bidirectional compensation type corrugated expansion joint |
| US20020113435A1 (en) * | 2001-02-16 | 2002-08-22 | Mcgrath David F. | Method and apparatus for monitoring pipeline expansion joint conditions |
| CN200968466Y (en) * | 2006-02-17 | 2007-10-31 | 中国船舶重工集团公司第七二五研究所 | Totally-enclosed direct-burried corrugated pipe 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
- 2014-03-06 CN CN201410078426.9A patent/CN103867844B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2168156Y (en) * | 1993-05-26 | 1994-06-08 | 于宁 | External pressure bidirectional compensation type corrugated expansion joint |
| US20020113435A1 (en) * | 2001-02-16 | 2002-08-22 | Mcgrath David F. | Method and apparatus for monitoring pipeline expansion joint conditions |
| CN200968466Y (en) * | 2006-02-17 | 2007-10-31 | 中国船舶重工集团公司第七二五研究所 | Totally-enclosed direct-burried corrugated pipe 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 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104948872A (en) * | 2015-06-11 | 2015-09-30 | 洛阳双瑞特种装备有限公司 | Expansion joint provided with elastic sealing structure and used for thermal insulation pipeline |
| CN104948872B (en) * | 2015-06-11 | 2017-01-04 | 洛阳双瑞特种装备有限公司 | A kind of heat-insulating pipeline expansion joint with elastic sealing structure |
| CN106122658A (en) * | 2016-09-08 | 2016-11-16 | 江苏五星波纹管有限公司 | Direct-burried external pressure triple seal height anti-corrosion type corrugated sleeve compensator |
| CN107606370A (en) * | 2017-10-13 | 2018-01-19 | 江苏恒润波纹管有限公司 | A kind of bellows component with slip-preventing structure |
| CN115076494A (en) * | 2022-05-16 | 2022-09-20 | 刘晨 | Double-flow outward pressure type compensator and implementation method thereof |
| CN115076494B (en) * | 2022-05-16 | 2023-10-31 | 江苏远通波纹管有限公司 | Double-flow outward-pressing compensator and implementation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103867844B (en) | 2016-03-23 |
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