CN104948872A - Expansion joint provided with elastic sealing structure and used for thermal insulation pipeline - Google Patents
Expansion joint provided with elastic sealing structure and used for thermal insulation pipeline Download PDFInfo
- Publication number
- CN104948872A CN104948872A CN201510316102.9A CN201510316102A CN104948872A CN 104948872 A CN104948872 A CN 104948872A CN 201510316102 A CN201510316102 A CN 201510316102A CN 104948872 A CN104948872 A CN 104948872A
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- China
- Prior art keywords
- pipe
- bellows
- outlet end
- expansion joint
- entrance point
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Classifications
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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
-
- 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)
- Joints Allowing Movement (AREA)
Abstract
The invention belongs to the technical field of compensation of thermal insulation pipeline compensators, and provides an expansion joint provided with an elastic sealing structure and used for a thermal insulation pipeline. The expansion joint provided with the elastic sealing structure and used for the thermal insulation pipeline comprises a work corrugated pipe (5), an inlet end pipe (1), an outlet end pipe (9) and seal end ring components (2); the work corrugated pipe (5) is sleeved with a protection corrugated pipe (4); clearance which is reserved between the protection corrugated pipe (4) and the work corrugated pipe (5) is filled with soft insulation materials (6); two ends of the protection corrugated pipe (4) extend towards two sides and are located at the outer portions of the inlet end pipe (1) and the outlet end pipe (9); two ends of the protection corrugated pipe (4) are directly connected with the thermal insulation pipeline or connected with the seal end ring components (2) which are arranged on the inlet end pipe (1) and the outlet end pipe (9) in an overlapped mode; clearance between a protection pipe and the inlet end pipe (1) and the outlet end pipe (9) is filled with solid insulation materials (7) and pipeline insulation materials (8). External impurities are effectively prevented from entering, too fast corrosion of the corrugated pipes is avoided, and the service lives of the corrugated pipes are prolonged.
Description
Technical field
The invention belongs to heat-insulating pipeline compensator compensates technical field, particularly a kind of heat-insulating pipeline expansion joint with elastic sealing structure.
Background technique
Along with the propelling of China's urbanization, central heat supply project is built on a large scale, the pipeline of conveying high-temperature steam, hot water has temperature variation, pipeline not only needs to carry out INSULATION DESIGN, need design expansion joint to compensate expanding with heat and contract with cold of pipeline simultaneously, to reduce pipe stress, ensure the safe operation of pipe-line system; Not only to consider the insulation requirement of high temperature media during design expansion joint, also should be specifically noted that and prevent introduced contaminants infiltration, corrosion bellows; Small-sized distributed air conditioner system (HVAC) needs the design buried cooling of conveying and heat medium pipeline, needs the elastic compensator of sealing thermal insulation to compensate.
Bellows expansion joint, in a large number for heat-insulating pipeline, has varied matured product structure to meet the compensation demand of pipeline; The expansion joint major part of existing selection for pipeline needs on-the-spot insulation, and during the construction of expansion joint insulating structure, changeover joint is many, and difficulty of construction is large, is unfavorable for ensureing heat insulation effect; Compensator operator guards is difficult to sealing, and introduced contaminants easily enters bellows, causes corrosion failure.
Summary of the invention
For solving the problems of the technologies described above, the object of the invention is to propose a kind of heat-insulating pipeline expansion joint with elastic sealing structure.
Following technological scheme is adopted for completing the present invention of foregoing invention object:
Have a heat-insulating pipeline expansion joint for elastic sealing structure, described expansion joint includes work bellows, entrance point pipe, outlet end pipe and sealed end ring member; Described entrance point pipe, outlet end pipe are connected to the two ends of described work bellows, and are connected with heat-insulating pipeline respectively; Described sealed end ring member is symmetrically arranged two covers; Described sealed end ring member includes sealing end ring and annular riser; Two sealing end ring are nested with respectively on described entrance point pipe, outlet end pipe, and connect firmly respectively by annular riser and described entrance point pipe, outlet end pipe; The outer cover of described work bellows is equipped with protection bellows; Between described protection bellows and work bellows, there is gap, and be filled with blanket type insulation in described gap; The two ends of described protection bellows extend respectively to both sides, and lay respectively at entrance point pipe, the outside formation entrance point pipe of outlet end pipe, the protective tube of outlet end pipe; The two ends of described protection bellows are directly connected with heat-insulating pipeline respectively, or, the two ends of described protection bellows overlap with the sealed end ring member on entrance point pipe, outlet end pipe respectively and are connected, form the elastic sealing structure of expansion joint, ensure compensator and extraneous sealing effect, avoid introduced contaminants to enter, cause corrosion; Hard insulating material and pipe insulation material is filled with between described protective tube and entrance point pipe, outlet end pipe; Described hard insulating material is between blanket type insulation and pipe insulation material, and described hard insulating material and described blanket type insulation form the composite heat-insulating layer of expansion joint jointly, carries out insulation compensate work bellows and heat-insulating pipeline.
Described protection bellows is rubber corrugated pipe.
Described protection bellows is polyfluortetraethylene pipe or pvc pipe, and polyfluortetraethylene pipe or the pvc pipe part corresponding with work bellows are bellows.
Described blanket type insulation is glass wool product or asbestos product or slag wool goods.
Described hard insulating material is silicate product or multi cellular glass or polyisocyanurate.
Described pipe insulation material is silicate product or multi cellular glass or polyisocyanurate.
A kind of heat-insulating pipeline expansion joint with elastic sealing structure that the present invention proposes, expansion joint outside adopts the insulating structure of composite heat-insulating layer as expansion joint of blanket type insulation and hard insulating material composition, both the temperature movement having met heat-insulating pipeline compensates, and reaches again the insulation of body effect of work bellows; The outside of insulating structure uses rubber hose or polyfluortetraethylene pipe to carry out elastic packing protection, effectively prevent introduced contaminants and enters, avoid the too fast corrosion of bellows, extend the working life of bellows; Expansion joint two ends only need be docked with pipeline, and the direct transition of insulating structure at two ends connects, and not only reduces in-site installation construction workload, and is conducive to the heat insulation effect ensureing compensator and pipeline docking site.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention 1.
Fig. 2 is the structural representation of the embodiment of the present invention 2.
In figure: 1, entrance point pipe, 2, sealed end ring member, 3, Stamping Steel Ribbon, 4, protection bellows 5, work bellows, 6, blanket type insulation, 7, hard insulating material, 8, pipe insulation material, 9, outlet end pipe.
Embodiment
With specific embodiment, the present invention is illustrated by reference to the accompanying drawings:
As shown in Figure 1, a kind of heat-insulating pipeline expansion joint with elastic sealing structure, described expansion joint includes work bellows 5, entrance point pipe 1, outlet end pipe 9 and sealed end ring member 2; Described entrance point pipe 1, outlet end pipe 9 are connected to the two ends of described work bellows 5, and are connected with heat-insulating pipeline respectively; Described sealed end ring member 2 is symmetrically arranged two covers; Described sealed end ring member 2 includes sealing end ring and annular riser; Two sealing end ring are nested with respectively on described entrance point pipe 1, outlet end pipe 9, and connect firmly respectively by annular riser and described entrance point pipe 1, outlet end pipe 9; The outer cover of described work bellows 5 is equipped with protection bellows 4; In this embodiment, described protection bellows 4 is rubber corrugated pipe; Between described protection bellows 4 and work bellows 5, there is gap, and be filled with blanket type insulation 6 in described gap; The two ends of described protection bellows 4 extend respectively to both sides, and lay respectively at entrance point pipe 1, the outside formation entrance point pipe of outlet end pipe 9, the protective tube of outlet end pipe; The two ends of described protection bellows 4 overlap with the sealed end ring member 2 on entrance point pipe 1, outlet end pipe 9 respectively and are connected, and at entrance point pipe 1, arrange Stamping Steel Ribbon 3 between outlet end pipe 9 and sealed end ring member 2, form the elastic sealing structure of expansion joint, ensure compensator and extraneous sealing effect, avoid introduced contaminants to enter, cause corrosion; Hard insulating material 7 and pipe insulation material 8 is filled with respectively between described protective tube and entrance point pipe 1, outlet end pipe 9; Described hard insulating material 7 is between blanket type insulation 6 and pipe insulation material 8, and described hard insulating material 7 and described blanket type insulation 6 form the composite heat-insulating layer of expansion joint jointly, carries out insulation compensate work bellows and heat-insulating pipeline.
Fig. 2 provides the structural representation of the embodiment of the present invention 2, the agent structure of this embodiment is with embodiment 1, in this embodiment, the two ends of described protection bellows 4 are directly connected with heat-insulating pipeline respectively, described protection bellows 4 is polyfluortetraethylene pipe, and the polyfluortetraethylene pipe part corresponding with work bellows is bellows; This embodiment is applicable to the situation that heat-insulating pipeline adopts jacket pipe.
Described blanket type insulation is glass wool product or asbestos product or slag wool goods.
Described hard insulating material is silicate product or multi cellular glass or polyisocyanurate.
Described pipe insulation material is silicate product or multi cellular glass or polyisocyanurate.
Claims (3)
1. have a heat-insulating pipeline expansion joint for elastic sealing structure, described expansion joint includes work bellows (5), entrance point pipe (1), outlet end pipe (9) and sealed end ring member (2); Described entrance point pipe (1), outlet end pipe (9) are connected to the two ends of described work bellows (5), and are connected with heat-insulating pipeline respectively; Described sealed end ring member (2) is symmetrically arranged two covers; Described sealed end ring member (2) includes sealing end ring and annular riser; Two sealing end ring are nested with respectively on described entrance point pipe (1), outlet end pipe (9), and connect firmly respectively by annular riser and described entrance point pipe (1), outlet end pipe (9); It is characterized in that: the outer cover of described work bellows (5) is equipped with protection bellows (4); Between described protection bellows (4) and work bellows (5), there is gap, and in described gap, be filled with blanket type insulation (6); The two ends of described protection bellows (4) extend respectively to both sides, and lay respectively at entrance point pipe (1), the outside formation entrance point pipe of outlet end pipe (9), the protective tube of outlet end pipe; The two ends of described protection bellows (4) are directly connected with heat-insulating pipeline respectively; Or, the two ends of described protection bellows (4) overlap with the sealed end ring member (2) on entrance point pipe (1), outlet end pipe (9) respectively and are connected, and form the elastic sealing structure of expansion joint, ensure compensator and extraneous sealing effect, avoid introduced contaminants to enter, cause corrosion; Hard insulating material (7) and pipe insulation material (8) is filled with between described protective tube and entrance point pipe (1), outlet end pipe (9); Described hard insulating material (7) is positioned between blanket type insulation (6) and pipe insulation material (8), described hard insulating material (7) and described blanket type insulation (6) form the composite heat-insulating layer of expansion joint jointly, carry out insulation compensate work bellows and heat-insulating pipeline.
2. a kind of heat-insulating pipeline expansion joint with elastic sealing structure according to claim 1, is characterized in that: described protection bellows (4) is rubber corrugated pipe.
3. a kind of heat-insulating pipeline expansion joint with elastic sealing structure according to claim 1; it is characterized in that: described protection bellows (4) is polyfluortetraethylene pipe or pvc pipe, and polyfluortetraethylene pipe or the pvc pipe part corresponding with work bellows are bellows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510316102.9A CN104948872B (en) | 2015-06-11 | 2015-06-11 | A kind of heat-insulating pipeline expansion joint with elastic sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510316102.9A CN104948872B (en) | 2015-06-11 | 2015-06-11 | A kind of heat-insulating pipeline expansion joint with elastic sealing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104948872A true CN104948872A (en) | 2015-09-30 |
| CN104948872B CN104948872B (en) | 2017-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510316102.9A Active CN104948872B (en) | 2015-06-11 | 2015-06-11 | A kind of heat-insulating pipeline expansion joint with elastic sealing structure |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105889688A (en) * | 2016-06-16 | 2016-08-24 | 江苏扬光机械制造有限公司 | External pressure axial corrosion-prevention and heat-insulation type direct burial bellows expansion joint |
| CN106394939A (en) * | 2016-09-22 | 2017-02-15 | 北京空间飞行器总体设计部 | Vacuum sealing device for compensating precision deviation of optical device and installation method of vacuum sealing device |
| CN107883106A (en) * | 2017-12-15 | 2018-04-06 | 马鞍山市飞达波纹管制造有限公司 | A kind of metal compensator |
| CN108843882A (en) * | 2018-07-09 | 2018-11-20 | 湖北新冶钢特种钢管有限公司 | Compensator leak-proof device, square type and straight barrel type FlexbleJoint |
| CN109695795A (en) * | 2019-02-14 | 2019-04-30 | 浙江中控太阳能技术有限公司 | A kind of thermal expansion pipeline attemperator filled automatically |
| RU189884U1 (en) * | 2018-10-22 | 2019-06-07 | АО "Владимирский завод металлорукавов" | BELLOW COMPENSATOR |
| CN110307432A (en) * | 2019-07-30 | 2019-10-08 | 刘进取 | A kind of expansion bellow |
| CN114542842A (en) * | 2022-01-17 | 2022-05-27 | 江苏同方机械制造有限公司 | Double-isolation high-temperature-resistant metal corrugated expansion joint |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2173892Y (en) * | 1993-10-07 | 1994-08-10 | 青岛浮山钢管防腐保温厂 | Full-embedded corrosion-resistant and thermal insulation multilayer corrugated expansion joint |
| WO1995001530A1 (en) * | 1993-06-29 | 1995-01-12 | Wes Technology Inc. | Bellows expansion joint |
| CN102278562A (en) * | 2011-05-29 | 2011-12-14 | 秦皇岛北方管业有限公司 | Direct burial type heat-preservation antiseptic expansion joint |
| CN103867844A (en) * | 2014-03-06 | 2014-06-18 | 泰州汇海管件科技有限公司 | Maintenance-free directly buried two-way external pressure bellows compensator |
-
2015
- 2015-06-11 CN CN201510316102.9A patent/CN104948872B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995001530A1 (en) * | 1993-06-29 | 1995-01-12 | Wes Technology Inc. | Bellows expansion joint |
| CN2173892Y (en) * | 1993-10-07 | 1994-08-10 | 青岛浮山钢管防腐保温厂 | Full-embedded corrosion-resistant and thermal insulation multilayer corrugated expansion joint |
| CN102278562A (en) * | 2011-05-29 | 2011-12-14 | 秦皇岛北方管业有限公司 | Direct burial type heat-preservation antiseptic expansion joint |
| CN103867844A (en) * | 2014-03-06 | 2014-06-18 | 泰州汇海管件科技有限公司 | Maintenance-free directly buried two-way external pressure bellows compensator |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105889688A (en) * | 2016-06-16 | 2016-08-24 | 江苏扬光机械制造有限公司 | External pressure axial corrosion-prevention and heat-insulation type direct burial bellows expansion joint |
| CN106394939A (en) * | 2016-09-22 | 2017-02-15 | 北京空间飞行器总体设计部 | Vacuum sealing device for compensating precision deviation of optical device and installation method of vacuum sealing device |
| CN107883106A (en) * | 2017-12-15 | 2018-04-06 | 马鞍山市飞达波纹管制造有限公司 | A kind of metal compensator |
| CN108843882A (en) * | 2018-07-09 | 2018-11-20 | 湖北新冶钢特种钢管有限公司 | Compensator leak-proof device, square type and straight barrel type FlexbleJoint |
| RU189884U1 (en) * | 2018-10-22 | 2019-06-07 | АО "Владимирский завод металлорукавов" | BELLOW COMPENSATOR |
| CN109695795A (en) * | 2019-02-14 | 2019-04-30 | 浙江中控太阳能技术有限公司 | A kind of thermal expansion pipeline attemperator filled automatically |
| CN109695795B (en) * | 2019-02-14 | 2019-11-01 | 浙江中控太阳能技术有限公司 | A kind of thermal expansion pipeline attemperator filled automatically |
| CN110307432A (en) * | 2019-07-30 | 2019-10-08 | 刘进取 | A kind of expansion bellow |
| CN110307432B (en) * | 2019-07-30 | 2021-04-13 | 江苏亚杏防腐科技有限公司 | Corrugated expansion joint |
| CN114542842A (en) * | 2022-01-17 | 2022-05-27 | 江苏同方机械制造有限公司 | Double-isolation high-temperature-resistant metal corrugated expansion joint |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104948872B (en) | 2017-01-04 |
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Address after: 471000, Binhe Road, hi tech Development Zone, Henan, Luoyang, 32 Patentee after: CSSC Shuangrui (Luoyang) special equipment Co.,Ltd. Address before: 471000, Binhe Road, hi tech Development Zone, Henan, Luoyang, 32 Patentee before: LUOYANG SUNRUI SPECIAL EQUIPMENT Co.,Ltd. |
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