CN110307405A - A kind of centering type Double-layer sleeve-type heat supply pipeline - Google Patents
A kind of centering type Double-layer sleeve-type heat supply pipeline Download PDFInfo
- Publication number
- CN110307405A CN110307405A CN201910557375.0A CN201910557375A CN110307405A CN 110307405 A CN110307405 A CN 110307405A CN 201910557375 A CN201910557375 A CN 201910557375A CN 110307405 A CN110307405 A CN 110307405A
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- Prior art keywords
- heat supply
- inner tube
- supply pipeline
- double
- centering type
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- F16L21/00—Joints with sleeve or socket
- F16L21/08—Joints with sleeve or socket with additional locking means
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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
- F16L59/06—Arrangements using an air layer or vacuum
- F16L59/07—Arrangements using an air layer or vacuum the air layer being enclosed by one or more layers of insulation
-
- 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
- F16L59/08—Means for preventing radiation, e.g. with metal foil
-
- 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
- F16L9/00—Rigid pipes
- F16L9/18—Double-walled pipes; Multi-channel pipes or pipe assemblies
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Insulation (AREA)
Abstract
The invention discloses a kind of centering type Double-layer sleeve-type heat supply pipelines, the logical double-deck heat supply pipeline is sequentially connected including several, wherein, each bilayer heat supply pipeline includes inner tube, outer tube and centering type annular shape support construction, outer tube is socketed on the outer wall of inner tube, centering type annular shape support construction is fixed between inner tube and outer tube, it is tightly connected between the end of outer tube and the outer wall of inner tube by end plate, so that forming annular closed cavity between inner tube and outer tube, the end of inner tube is connected by connection structure in the adjacent two double-deck heat supply pipelines, the radiation loss of the heat supply pipeline is small, low cost, it is small using difficulty, pipe surface Temperature Distribution, durability and stability are stronger.
Description
Technical field
The invention belongs to heat distribution pipeline design fields, are related to a kind of centering type Double-layer sleeve-type heat supply pipeline.
Background technique
Conveying pipe is important infrastructure, carries important logistics transmission task in economic construction and development.
As urbanization process is accelerated, city heat supply area constantly expands, heating network Quick Extended.Statistical data shows state
Interior high-temperature pipe system surfaces heat loss over-standard phenomenon has generality.Currently, equal thickness guarantor is widely used in industrial thermal pipe
Warm structure design.Now there are three types of common installation of heating pipeline modes: aerial laying, directly buried installation and trench laying.It is aerial to apply
If analyzing its boundary layer can find that pipe surface temperature has " upper height there are heat transfer free convection mode outside formula heat supply pipeline
Under it is low " the regularity of distribution；For directly buried installation and trench laying formula heat supply pipeline, since surface temperature is low, and it is downward from earth's surface
The soil moisture gradually rises, so pipe surface temperature shows the regularity of distribution of " upper low high ".Therefore, industrial pipeline uses
The design of equal thickness heat supply pipeline is simultaneously unreasonable.
In existing equal thickness heat supply pipeline heat preservation technology, common method is to wrap up adiabator layer in heat supply pipeline outer wall.
Currently, the thermal insulation material huge number used in heat distribution pipeline engineering, such as asbestos, rock wool, perlite, mineral wool, foaming rubber plastic
Equal heat insulating products, with thermal coefficient is small, bulk density is small, non-ignitable or fire retardant, lower-price characteristic.But most thermal insulation materials
In the presence of decomposing aging fast, less robust, the problems such as collapsing breakage easily occur；Part thermal insulation material will appear after long-term operation
The problems such as material hydroscopicity quickly increases, thermal coefficient can obviously increase.The modes such as labyrinth design are carried out to insulating layer
The structures such as radiation loss, such as multilayer sleeve, vacuum layer, interior outer heat insulation layer, heat-reflecting layer can also be reduced, but its cost is high, hard
Solidity is poor, engineer application difficulty is big.
According to retrieval, the document of following publication relevant to the application is found, specific disclosure is as follows:
Patent document CN108626521A discloses a kind of heating pipe for being sprayed with thermal insulation coatings of hot duct technical field
Road, including pipeline body, inner tube, resistance oxygen antibiotic layer, erosion resistant coating, protective layer, thermal insulation coatings layer etc..It is sprayed at pipeline body outer wall
Thermal insulation coatings layer, can effectively avoid scattering and disappearing for heat in hot duct, the excessively high scald of pipeline external surface temperature is avoided to transport
Row service personnel, protective layer play sufficient protective effect to internal structure.The inventive structure is simple, practical, Neng Gouyou
The lost and excessively high scald operating maintenance personnel of pipeline external surface temperature for avoiding heat in hot duct of effect, can play good
Anti-corrosion, antibacterial and antioxidation.
Patent document CN207906704U discloses a kind of Novel hollow building enclosure heat supply pipeline device, including defeated heat
Pipe, hollow gas insulating layer, support frame, the airtight protective layer of steel band；Hollow building enclosure is by the airtight protective layer of steel strip reinforced
It based on structure, is equipped with low thermal conductivity material and makees skeleton, there is radiation protection hot material composition in soak pipeline, hollow layer exists
When pumped (conveying) medium temperature is lower than 100 DEG C, air and CO2 gas or vacuum can be.
Patent document CN207880242U discloses a kind of water and heat provision pipeline, is related to heat supply process field, solves existing
The problem for having heat supply pipeline installation inconvenient, be characterized in that: including tube body, inner tube and outer tube, the both ends of outer tube are fixedly welded
There is ring flange, the both ends of ring flange are welded with mounting plate, linking arm is equipped between two pieces of mounting plates, is set between tube body described in two groups
There are the assembly parts of fitting inner tube wall.The pressure of every section of tube body is reduced by the tube body of multiple splicings for longer pipeline,
The ring flange of two outer tubes is docked again, and is bolted, the connection between tube body can be fast implemented；Connect the pipe finished
Body is fixed on wall or heating network bracket by linking arm, convenient and efficient；When connecting two neighboring tube body, by connecting
Place adds assembly parts, and cooperates with rubber ring, thus the leakproofness between improving tube body.
Above-mentioned patent does not solve pipe surface temperature distributing disproportionation, radiation loss in existing heat supply ductwork simultaneously
Greatly, cost height, insulating layer less robust, it is big using difficulty the problems such as.
Summary of the invention
It is an object of the invention to overcome the above-mentioned prior art, a kind of centering type Double-layer sleeve-type heat supply is provided
The radiation loss of pipeline, the heat supply pipeline is small, and low cost is small using difficulty, pipe surface Temperature Distribution, durability and stability
It is relatively strong.
In order to achieve the above objectives, centering type Double-layer sleeve-type heat supply pipeline of the present invention include it is several be sequentially connected it is logical
The double-deck heat supply pipeline, wherein it is each bilayer heat supply pipeline include inner tube, outer tube and centering type annular shape support construction, outer tube
It is socketed on the outer wall of inner tube, centering type annular shape support construction is fixed between inner tube and outer tube, the end of outer tube and inner tube
Outer wall between be tightly connected by end plate so that form annular closed cavity between inner tube and outer tube, adjacent two double-deck to be supplied
The end of inner tube is connected by connection structure in heat pipeline.
Heat insulation coating is provided on the inner wall of outer tube and on the outer wall of inner tube.
Centering type annular shape support construction is 360 ° of annular structures, and the centering type annular shape support construction includes two
Semicircular ring centering type support construction, two semicircular ring centering type support constructions are block form drum steel construction.
The material of heat insulation coating is ZS-211 reflecting heat insulation paint.
The connection structure includes that seal washer and rigid clip, the outer wall of inner tube offer groove, and the groove is located at
Outside outer tube, the side of rigid clip is pressed in the groove on the double-deck heat supply pipeline, and the other side of rigid clip is pressed in
In groove on another double-deck heat supply pipeline, and it is arranged between the outer wall of inner tube in rigid clip and two double-deck heat supply pipelines
There is seal washer.
Rigid clip is endless tube road self-centering type structure.
The distance between groove and inner pipe end are 25mm；
The depth of groove is 3.5mm, and the diameter of groove is 20mm.
The distance between axis and the axis of outer tube of inner tube are 10mm.
The invention has the following advantages:
Centering type Double-layer sleeve-type heat supply pipeline of the present invention is when specific operation, centering type annular shape support construction
It is fixed between inner tube and outer tube, the support of inner tube and outer tube is realized by centering type annular shape support construction, at supporting zone
The uniform force of inner tube and outer tube, inner tube and outer tube are designed using eccentric type structure, to efficiently reduce by free convection band
The radiation loss come, and make pipe surface Temperature Distribution.In practical operation, can it is appropriate reduce pipeline wall thickness, subtract
The feed consumption of small pipeline, better economy.In addition, be tightly connected between the end of outer tube and the outer wall of inner tube by end plate, so that
Annular closed cavity is formed between inner tube and outer tube, to reduce air flowing, heat-conducting mode and convection type, which is effectively reduced, to be caused
Radiation loss, in addition, the annular closed cavity can effectively reduce Radiant exothermicity, the outside wall temperature of outer tube is lower, from
And radiation loss caused by heat radiation mode is effectively reduced, so that heat supply pipeline has small radiation loss, low cost, using difficulty
Small, durability and the stronger feature of stability are spent, structure is simple, and practicability is extremely strong.
Further, it is provided with heat insulation coating on the inner wall of outer tube and on the outer wall of inner tube, to increase thermal conduction resistance, simultaneously
Reduce radiant heat loss.
Further, it is connected between adjacent inner tube by rigidity clip, connects simplicity reliably, good airproof performance, there is no welderings
The problem of slag and destruction zinc coat, it can be ensured that pipeline is unimpeded, while can reduce thermal stress within certain limits to heat supply pipeline
It influences.
Detailed description of the invention
Fig. 1 is the sectional view of invention；
Fig. 2 is the schematic three dimensional views of centering type annular shape support construction in the present invention；
Fig. 3 is the structural schematic diagram of connection structure in the present invention.
Wherein, 1 it is outer tube, 2 be semicircular ring centering type support construction, 3 be heat insulation coating, 4 be inner tube, 5 be end plate, 6 is
Groove, 7 be seal washer, 8 be rigid clip.
Specific embodiment
The invention will be described in further detail with reference to the accompanying drawing:
Referring to Figure 1 and Figure 2, centering type Double-layer sleeve-type heat supply pipeline of the present invention include it is several be sequentially connected it is logical
The double-deck heat supply pipeline, wherein each bilayer heat supply pipeline includes inner tube 4, outer tube 1 and centering type annular shape support construction, outer tube 1
Be socketed on the outer wall of inner tube 4, centering type annular shape support construction is fixed between inner tube 4 and outer tube 1, the end of outer tube 1 with
It is tightly connected between the outer wall of inner tube 4 by end plate 5, so that annular closed cavity is formed between inner tube 4 and outer tube 1, adjacent two
The end of inner tube 4 is connected by connection structure in root bilayer heat supply pipeline.
Heat insulation coating 3 is provided on the inner wall of outer tube 1 and on the outer wall of inner tube 4；Centering type annular shape support construction is
360 ° of annular structures, the centering type annular shape support construction include two semicircular ring centering type support constructions 2, two semicircles
Ring centering type support construction 2 is block form drum steel construction.
The connection structure includes that seal washer 7 and rigid clip 8, the outer wall of inner tube 4 offer groove 6, the groove 6
Outside outer tube 1, the side of rigid clip 8 is pressed in the groove 6 on the double-deck heat supply pipeline, rigid clip 8 it is another
Side compression is in the groove 6 on another double-deck heat supply pipeline, and rigid clip 8 and inner tube 4 in two bilayer heat supply pipelines
Seal washer 7 is provided between outer wall；Rigid clip 8 is endless tube road self-centering type structure.
The material of inner tube 4 is stainless steel, internal diameter 500mm, wall thickness 10mm, pipe range 6000mm；4 edge of inner tube is far from end
Indent processing is carried out at portion 25mm, indent diameter is 20mm, and indent depth is 3.5mm；The material of outer tube 1 is carbon steel, and internal diameter is
580mm, wall thickness 5mm, pipe range 5900mm, the axle center of outer tube 1 are 10mm at a distance from inner tube axle center；The material of end plate 5 is
Stainless steel, inner hole 520mm, outer diameter 600mm, with a thickness of 5mm；The material of heat insulation coating 3 is ZS-211 reflecting heat insulation
Coating is arranged at the outer wall of inner tube 4 and the inner wall of outer tube 1 with a thickness of 1mm.
Centering type annular shape support construction uses five groups of block form drum steel constructions, presents outside 180 ° of semicircular ring centering types
Type, two semicircular ring centering type support constructions 2 form 360 ° of cyclic annular centering type support constructions, and the material of drum steel is stainless steel,
Width is 20mm, and the edge of a wing is gradually increased to 30mm by 10mm with a thickness of 5mm, web thickness 5mm, web height, and semicircular ring is inclined
The internal diameter of core type support construction 2 is 520mm, and outer diameter 580mm, inner hole axle center is 10mm at a distance from outer wall axle center.
The principle of the present invention are as follows:
Equal thickness heat supply pipeline surface boundary layer thickness is inconsistent, leads to problems such as its surface temperature distribution uneven, this hair
The bright eccentric type structure for devising inner tube 4 and outer tube 1 according to this phenomenon designs, and comes according to boundary layer thickness and surface temperature distribution
The spacing between inner tube 4 and outer tube 1 is adjusted, is radiated so as to efficiently reduce by free convection bring, nature, which exists, leads
Three kinds of heat, convection current and heat radiation heat transfer types.The present invention can be dissipated to caused by three kinds of heat transfer types of thermally conductive, convection current and heat radiation
Heat loss is cut down, and is described as follows:
The inner wall of outer tube 1 and the outer wall of inner tube 4 are disposed with heat insulation coating 3, form annular closed between outer tube 1 and inner tube 4
Cavity (being full of air) all has lower thermal coefficient, therefore the present invention can be effectively reduced heat dissipation damage caused by heat-conducting mode
It loses.
Annular closed cavity between outer tube 1 and inner tube 4 can reduce air flowing, and convection transfer rate is effectively reduced；This
Outside, the outer wall of outer tube 1 has lower temperature, and the temperature difference of pipeline outer wall and atmospheric environment is small, can effectively reduce heat convection
Amount, therefore the present invention can be effectively reduced radiation loss caused by convection type.
Annular closed cavity between outer tube 1 and inner tube 4 can be effectively reduced Radiant exothermicity, the outside wall temperature of outer tube 1
It is low, and carbon steel material has lower emissivity, therefore the present invention can be effectively reduced radiation loss caused by heat radiation mode.
Above said content only expresses one embodiment of the present invention, and the description thereof is more specific and detailed, but not
Limitations on the scope of the patent of the present invention therefore can be interpreted as.It should be pointed out that coming for those of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, structure without departing from invention or
Person beyond the scope defined by this claim, is within the scope of protection of the invention.
Claims (8)
1. a kind of centering type Double-layer sleeve-type heat supply pipeline, which is characterized in that be sequentially connected the logical double-deck heating tube including several
Road, wherein each bilayer heat supply pipeline includes inner tube (4), outer tube (1) and centering type annular shape support construction, outer tube (1) socket
In on the outer wall of inner tube (4), centering type annular shape support construction is fixed between inner tube (4) and outer tube (1), the end of outer tube (1)
It is tightly connected between portion and the outer wall of inner tube (4) by end plate (5), so that forming annular closed between inner tube (4) and outer tube (1)
Cavity, the end of inner tube (4) is connected by connection structure in adjacent two double-deck heat supply pipelines.
2. centering type Double-layer sleeve-type heat supply pipeline according to claim 1, which is characterized in that on the inner wall of outer tube (1)
And heat insulation coating (3) are provided on the outer wall of inner tube (4).
3. centering type Double-layer sleeve-type heat supply pipeline according to claim 1, which is characterized in that the support of centering type annular shape
Structure is 360 ° of annular structures, and the centering type annular shape support construction includes two semicircular ring centering type support constructions (2),
Two semicircular ring centering type support constructions (2) are block form drum steel construction.
4. centering type Double-layer sleeve-type heat supply pipeline according to claim 2, which is characterized in that the material of heat insulation coating (3)
Material is ZS-211 reflecting heat insulation paint.
5. centering type Double-layer sleeve-type heat supply pipeline according to claim 1, which is characterized in that the connection structure includes
Seal washer (7) and rigid clip (8), the outer wall of inner tube (4) offer groove (6), and the groove (6) is located at outer tube (1) outside,
The side of rigid clip (8) is pressed in the groove (6) on the double-deck heat supply pipeline, another side compression of rigid clip (8)
It is interior in the groove (6) on another double-deck heat supply pipeline, and rigid clip (8) and inner tube (4) in two double-deck heat supply pipelines
Seal washer (7) are provided between outer wall.
6. centering type Double-layer sleeve-type heat supply pipeline according to claim 5, which is characterized in that rigid clip (8) is ring
Pipeline self-centering type structure.
7. centering type Double-layer sleeve-type heat supply pipeline according to claim 5, which is characterized in that
The distance between groove (6) and inner tube (4) end are 25mm；
The depth of groove (6) is 3.5mm, and the diameter of groove (6) is 20mm.
8. centering type Double-layer sleeve-type heat supply pipeline according to claim 1, which is characterized in that the axis of inner tube (4) with
The distance between axis of outer tube (1) is 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910557375.0A CN110307405B (en) | 2019-06-25 | 2019-06-25 | Eccentric double-layer sleeve type heat supply pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910557375.0A CN110307405B (en) | 2019-06-25 | 2019-06-25 | Eccentric double-layer sleeve type heat supply pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110307405A true CN110307405A (en) | 2019-10-08 |
| CN110307405B CN110307405B (en) | 2021-04-20 |
Family
ID=68076317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910557375.0A Active CN110307405B (en) | 2019-06-25 | 2019-06-25 | Eccentric double-layer sleeve type heat supply pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110307405B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2481779A1 (en) * | 1980-04-30 | 1981-11-06 | Mansson Karl | Buried insulated pipeline - with pipe eccentrically arranged in outer envelope with interposed insulating material to optimise insulation |
| JPH08277994A (en) * | 1995-04-05 | 1996-10-22 | Suzuki Motor Corp | Hollow double pipe |
| CN2580259Y (en) * | 2002-11-29 | 2003-10-15 | 亓登利 | Metal composite vacuum thermal insulation pipe |
| CN201269382Y (en) * | 2008-10-24 | 2009-07-08 | 山东泉林纸业有限责任公司 | Fluid thermal insulation pipe and thermal insulating pipe sheath used for the same |
| CN102979991A (en) * | 2012-11-26 | 2013-03-20 | 中国平煤神马集团阳光物业有限公司 | Method for arranging cotton insulation material on heat supply pipeline |
| CN203671146U (en) * | 2013-12-06 | 2014-06-25 | 安徽科达洁能股份有限公司 | Heat-preserving pipeline |
| DE102014114878A1 (en) * | 2014-10-14 | 2016-04-14 | Richard und Herbert Möck Erdwärme GmbH | Pipe installation, floor heating, floor heating system and method for this |
| CN205592529U (en) * | 2016-05-09 | 2016-09-21 | 开封市翰园石油科技有限公司 | Clamp connection piece |
| CN205859500U (en) * | 2016-08-08 | 2017-01-04 | 中石化炼化工程（集团）股份有限公司 | A kind of jet chimney |
-
2019
- 2019-06-25 CN CN201910557375.0A patent/CN110307405B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2481779A1 (en) * | 1980-04-30 | 1981-11-06 | Mansson Karl | Buried insulated pipeline - with pipe eccentrically arranged in outer envelope with interposed insulating material to optimise insulation |
| JPH08277994A (en) * | 1995-04-05 | 1996-10-22 | Suzuki Motor Corp | Hollow double pipe |
| CN2580259Y (en) * | 2002-11-29 | 2003-10-15 | 亓登利 | Metal composite vacuum thermal insulation pipe |
| CN201269382Y (en) * | 2008-10-24 | 2009-07-08 | 山东泉林纸业有限责任公司 | Fluid thermal insulation pipe and thermal insulating pipe sheath used for the same |
| CN102979991A (en) * | 2012-11-26 | 2013-03-20 | 中国平煤神马集团阳光物业有限公司 | Method for arranging cotton insulation material on heat supply pipeline |
| CN203671146U (en) * | 2013-12-06 | 2014-06-25 | 安徽科达洁能股份有限公司 | Heat-preserving pipeline |
| DE102014114878A1 (en) * | 2014-10-14 | 2016-04-14 | Richard und Herbert Möck Erdwärme GmbH | Pipe installation, floor heating, floor heating system and method for this |
| CN205592529U (en) * | 2016-05-09 | 2016-09-21 | 开封市翰园石油科技有限公司 | Clamp connection piece |
| CN205859500U (en) * | 2016-08-08 | 2017-01-04 | 中石化炼化工程（集团）股份有限公司 | A kind of jet chimney |
Non-Patent Citations (1)
| Title |
|---|
| 张新兵等: "《建筑工程质量问题控制方法及应用》", 31 December 2016, 东南大学出版社 * |
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| CN110307405B (en) | 2021-04-20 |
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