CN2347035Y - Heating duct with compound insulation layer - Google Patents
Heating duct with compound insulation layer Download PDFInfo
- Publication number
- CN2347035Y CN2347035Y CN 98217319 CN98217319U CN2347035Y CN 2347035 Y CN2347035 Y CN 2347035Y CN 98217319 CN98217319 CN 98217319 CN 98217319 U CN98217319 U CN 98217319U CN 2347035 Y CN2347035 Y CN 2347035Y
- Authority
- CN
- China
- Prior art keywords
- insulation layer
- steel pipe
- heat insulation
- layer
- utility
- Prior art date
- 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.)
- Expired - Fee Related
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- Thermal Insulation (AREA)
Abstract
The utility model relates to a heat insulation pipeline for conveying high temperature fluid, particularly a heat supply pipeline with a compound heat insulation layer. The utility model comprises a heat insulation layer and a steel pipe. A high temperature resistant paint layer is bonded on the surface of the steel pipe. A polyurethane frothing heat insulation layer is arranged on the paint layer. A polyethylene protection cover is arranged on the heat insulation layer. The utility model overcomes the defect that the traditional heat insulation layer which is fastened on the steel pipe is not bonded with the steel pipe, and can not form a whole. The utility model avoids the abuse that the polyurethane heat insulation layer is directly contacted with high temperature steel pipe wall to cause the polyurethane to be carbonized. The utility model can be buried in under ground, and has the advantages of low cost, convenient installation, small maintenance and small thermal losses.
Description
The utility model relates to the insulation pipe of carrying high temperature fluid, particularly has the heat supply pipeline of composite heat-insulating layer.
At present, the outdoor pipe network of central heating system adopts the thermal insulation pipe with polyurethane insulation coating directly to be embedded in underground in a large number, it is low that this mode has cost, easy for installation, duration is short, advantages such as amount of maintenance is little, and thermal loss is little, but can make the polyurethane insulation coating carbonization for the high-temperature steam of temperature above 150 ℃, thereby the broken structure of having encircled polyurethane has shortened working life and thermal insulation property, the pipe network that many conveying high-temperature steams are therefore arranged still adopts and traditional makes insulation tile with the silicate product or the cotton of delaying, and is fastened on the steel pipe, adopt the trench laying mode, its cost height, the construction period is long, and thermal loss is big.Be fastened on the steel pipe with insulation tile in addition, bonding not between insulation tile and the steel pipe can not form integral body, can not transmit soil and allow friction and what thrust of steel shaft.
The purpose of this utility model is to provide a kind of heat supply pipeline with composite heat-insulating layer, not only thermal insulation layer can directly be bonded on the steel pipe, the good integrity of thermal insulation layer, and the transmission temperature surpasses 150 ℃ high wet vapor and also can not make the polyurethane insulation coating carbonization, can directly be embedded in undergroundly, and cost is low, easy for installation, amount of maintenance is little, and thermal loss is little, long service life.
The utility model is achieved in that a kind of heat supply pipeline with composite heat-insulating layer; comprise thermal insulation layer and steel pipe; fixed resistant to elevated temperatures coating layer is being provided with the polyurethane foam thermal insulation layer on coating layer on steel tube surface, and containment vessel is being set on thermal insulation layer.
Because the utility model is provided with polyurethane insulation coating again because the high-temperature resistant coating layer is bonded on the steel pipe on coating layer, containment vessel is set on thermal insulation layer.Promptly overcome the traditional insulation tile and the steel pipe that are fastened on the steel pipe and be provided with bonding, can not form whole shortcoming, avoided polyurethane heat-insulation directly to contact again and make the polyurethane carbonization, the shortcoming that reduces working life with the High tem perature steel tube wall.The utility model can directly be managed underground, and cost is low, and is easy for installation, and amount of maintenance is little, and thermal loss is little.Because the composite heat-insulating layer good integrity, be consolidated with steel pipe and can transmit soil and allow the end thrust of friction and steel pipe.
Accompanying drawing is the utility model sectional structure schematic representation; below in conjunction with accompanying drawing the utility model is further described; a kind of heat supply pipeline with composite heat-insulating layer; comprise thermal insulation layer and steel pipe; fixed resistant to elevated temperatures coating layer (3) on steel pipe (4) surface; coating layer (3) can be magnesium silicate layer or rare earth layer; thermal insulation layer (2) is being set on coating layer (3); thermal insulation layer (2) is the polyurethane foam layer; polyethylene containment vessel (1) is being set on polyurethane foam thermal insulation layer (2), and polyethylene containment vessel (1) constitutes with high density polyethylene (HDPE).
The utility model is before construction and installation; earlier coating is made starchiness; be coated in steel pipe (4) after last a few hours; condense into solid coating layer (3); tightly be bonded to integral body with steel pipe (4); the outside constitutes thermal insulation layer (2) with polyurethane foam again, makes polyethylene containment vessel (1) in thermal insulation layer (2) outside, can directly bury underground underground.
Claims (3)
1, a kind of heat supply pipeline with composite heat-insulating layer; comprise thermal insulation layer and steel pipe; it is characterized in that fixed resistant to elevated temperatures coating layer (3) on steel pipe (4) surface, polyurethane foam thermal insulation layer (2) is being set on coating layer (3), containment vessel (1) is being set on thermal insulation layer (2).
2, the heat supply pipeline with composite heat-insulating layer according to claim 1 is characterized in that coating layer (3) can be the silicic acid aluminium lamination, also can be the rare earth layer.
3, the heat supply pipeline with composite heat-insulating layer according to claim 1 is characterized in that containment vessel (1) constitutes with high density polyethylene (HDPE).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98217319 CN2347035Y (en) | 1998-07-18 | 1998-07-18 | Heating duct with compound insulation layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98217319 CN2347035Y (en) | 1998-07-18 | 1998-07-18 | Heating duct with compound insulation layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2347035Y true CN2347035Y (en) | 1999-11-03 |
Family
ID=33969961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98217319 Expired - Fee Related CN2347035Y (en) | 1998-07-18 | 1998-07-18 | Heating duct with compound insulation layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2347035Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155599A (en) * | 2011-04-28 | 2011-08-17 | 钜电(昆山)科技管线有限公司 | Bridging-type seamless polyethylene foamed thermal insulation pipe |
| CN102305530A (en) * | 2011-10-10 | 2012-01-04 | 江苏金辰针纺织有限公司 | Energy-saving drying unit |
| CN101769410B (en) * | 2010-01-27 | 2012-05-23 | 傅礼铭 | Hot/cold flow medium supplying pipeline with air cavity |
| CN105782591A (en) * | 2014-12-26 | 2016-07-20 | 天津恒实通工程技术发展有限公司 | Heat supply pipeline coated with nano ceramic coating with high heat insulating efficiency |
| CN108626521A (en) * | 2017-03-24 | 2018-10-09 | 天津宝丽杰涂料有限公司 | A kind of hot duct being sprayed with thermal insulation coatings |
| CN110594531A (en) * | 2019-09-24 | 2019-12-20 | 内蒙古伟之杰节能装备有限公司 | Rigid polyurethane spraying polyethylene winding prefabricated direct-buried heat insulation pipe and preparation method thereof |
-
1998
- 1998-07-18 CN CN 98217319 patent/CN2347035Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101769410B (en) * | 2010-01-27 | 2012-05-23 | 傅礼铭 | Hot/cold flow medium supplying pipeline with air cavity |
| CN102155599A (en) * | 2011-04-28 | 2011-08-17 | 钜电(昆山)科技管线有限公司 | Bridging-type seamless polyethylene foamed thermal insulation pipe |
| CN102305530A (en) * | 2011-10-10 | 2012-01-04 | 江苏金辰针纺织有限公司 | Energy-saving drying unit |
| CN105782591A (en) * | 2014-12-26 | 2016-07-20 | 天津恒实通工程技术发展有限公司 | Heat supply pipeline coated with nano ceramic coating with high heat insulating efficiency |
| CN108626521A (en) * | 2017-03-24 | 2018-10-09 | 天津宝丽杰涂料有限公司 | A kind of hot duct being sprayed with thermal insulation coatings |
| CN110594531A (en) * | 2019-09-24 | 2019-12-20 | 内蒙古伟之杰节能装备有限公司 | Rigid polyurethane spraying polyethylene winding prefabricated direct-buried heat insulation pipe and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |