CN215293923U - Large-diameter prefabricated direct-buried heat-insulation pipe - Google Patents
Large-diameter prefabricated direct-buried heat-insulation pipe Download PDFInfo
- Publication number
- CN215293923U CN215293923U CN202121360361.9U CN202121360361U CN215293923U CN 215293923 U CN215293923 U CN 215293923U CN 202121360361 U CN202121360361 U CN 202121360361U CN 215293923 U CN215293923 U CN 215293923U
- Authority
- CN
- China
- Prior art keywords
- layer
- heat
- pipe
- prefabricated direct
- fiber cloth
- 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.)
- Active
Links
- 238000009413 insulation Methods 0.000 title claims abstract description 34
- 239000004698 Polyethylene Substances 0.000 claims abstract description 20
- 239000004744 fabric Substances 0.000 claims abstract description 20
- -1 polyethylene Polymers 0.000 claims abstract description 20
- 229920000573 polyethylene Polymers 0.000 claims abstract description 20
- 239000011491 glass wool Substances 0.000 claims abstract description 19
- 239000003365 glass fiber Substances 0.000 claims abstract description 18
- 239000006260 foam Substances 0.000 claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 11
- 239000010959 steel Substances 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 238000005187 foaming Methods 0.000 claims abstract description 7
- 239000004964 aerogel Substances 0.000 claims description 4
- 229920002635 polyurethane Polymers 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 3
- 238000010030 laminating Methods 0.000 abstract description 5
- 230000001681 protective effect Effects 0.000 abstract 1
- 238000004321 preservation Methods 0.000 description 16
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Thermal Insulation (AREA)
Abstract
The utility model discloses a large-diameter prefabricated direct-buried heat-insulating pipe, which particularly comprises a working steel pipe, wherein a first heat-insulating layer is arranged outside the working steel pipe, a first glass wool glass fiber cloth layer is wrapped outside the first heat-insulating layer, a polyethylene foaming buffer layer is wrapped outside the first glass wool glass fiber cloth layer, a second heat-insulating layer is wrapped outside the polyethylene foaming buffer layer, a second glass wool glass fiber cloth layer is wrapped outside the second heat-insulating layer, and an outer protective pipe is arranged outside the second glass wool glass fiber cloth layer; a plurality of grooves are uniformly arranged on the outer surface of the polyethylene foam buffer layer, a plurality of lugs matched with the grooves are uniformly distributed on the inner surface of the second heat insulation layer, and the lugs are embedded into the grooves so that the polyethylene foam buffer layer and the second heat insulation layer are tightly combined; the outer parts of the joints of the two prefabricated direct-buried heat-insulation pipes are provided with annular clamps, and the inner sides of the clamps are provided with sealing rings; the utility model provides a prefabricated direct-burried insulating tube inner structure laminating of big pipe diameter is not tight, the problem of the easy seepage of joint seam.
Description
Technical Field
The utility model relates to a thermal insulation pipe specifically is a prefabricated direct-burried thermal insulation pipe of big pipe diameter.
Background
The prefabricated direct-buried heat-insulating energy-saving pipe is used as a heat supply pipeline, is widely applied to the aspects of chemical pipeline engineering, electric power, petroleum, central air-conditioning ventilation pipelines, central heat supply, municipal engineering and the like, and has the advantages of high-efficiency heat insulation, water resistance, corrosion resistance, flame retardance, cold resistance, light capacity, high strength, convenience in construction and the like.
At present, the prefabricated direct-buried heat-insulating pipeline tends to use a large-pipe-diameter specification so as to meet the requirements of engineering projects; but along with the increase of pipe diameter, the phenomenon that can not closely laminate appears easily between heat preservation and the working pipeline to influence the heat preservation effect of insulating tube, along with the increase of pipe diameter, the seepage appears easily in the seam crossing of insulating tube moreover, also can influence the heat preservation effect of insulating layer.
SUMMERY OF THE UTILITY MODEL
The utility model overcomes prior art's is not enough, provides a prefabricated direct-burried insulating tube of big pipe diameter, solves the prefabricated direct-burried insulating tube inner structure laminating of big pipe diameter not tight, the easy seepage problem of joint seam.
In order to achieve the above purpose, the present invention is achieved by the following technical solutions.
A large-diameter prefabricated direct-buried heat insulation pipe comprises a working steel pipe, wherein a first heat insulation layer is arranged on the outer side of the working steel pipe, a first glass wool glass fiber cloth layer is wrapped on the outer side of the first heat insulation layer, a polyethylene foaming buffer layer is wrapped on the outer side of the first glass wool glass fiber cloth layer, a second heat insulation layer is wrapped on the outer side of the polyethylene foaming buffer layer, a second glass wool glass fiber cloth layer is wrapped on the outer side of the second heat insulation layer, and an outer protection pipe is arranged on the outer side of the second glass wool glass fiber cloth layer; a plurality of grooves are uniformly formed in the outer surface of the polyethylene foam buffer layer, a plurality of lugs matched with the grooves are uniformly formed in the inner surface of the second heat insulation layer, and the lugs are embedded into the grooves so that the polyethylene foam buffer layer and the second heat insulation layer are tightly combined; the outside of the interface of two prefabricated direct burial insulating pipes is provided with a hoop with a ring, and the inner side of the hoop is provided with a sealing ring.
Further, the first heat-insulating layer and the second heat-insulating layer are composite heat-insulating layers of polyurethane and aerogel felt.
Furthermore, the end face of the prefabricated direct-buried heat preservation pipe is coated with a waterproof layer.
The utility model discloses produced beneficial effect for prior art does:
the utility model discloses set up the buffer layer between first heat preservation and second heat preservation, improve the thermal insulation performance of pipeline on the one hand, on the other hand is to the work steel pipe and the heat preservation protection of inlayer, reduce its pressure that receives, two-layer heat preservation outside through the cotton glass fiber cloth layer parcel of glass make it closely laminate with the inlayer, in order to make the polyethylene foam buffer layer and the second heat preservation of the intermediate position of easy production staggered floor combine closely in the lug embedding recess to the tight laminating degree of big prefabricated direct-burried heat preservation inner structure of pipe diameter has been improved. The clamp provided with the sealing ring is used for sealing and fastening the interfaces of the two prefabricated direct-buried heat-insulation pipes, so that the problem of interface leakage is solved.
Drawings
Fig. 1 is a sectional view of the large-diameter prefabricated direct-buried heat-insulating pipe of the utility model.
Fig. 2 is the external structure schematic diagram of the prefabricated direct-burried insulating tube of big pipe diameter.
In the figure, 1 is a working steel pipe; 2 is a first heat-preserving layer; 3 is a first glass wool glass fiber cloth layer; 4 is a polyethylene foaming buffer layer; 5 is the second heat preservation, 6 is the second glass wool glass silk fiber cloth layer, 7 is the outer pillar, 8 is the clamp, 9 is the waterproof layer, 10 is the recess, 11 is the lug.
Detailed Description
In order to make the technical problem, technical scheme and beneficial effect that the utility model will solve more clearly understand, combine embodiment and attached drawing, it is right to go on further detailed description the utility model discloses. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The technical solution of the present invention is described in detail below with reference to the embodiments and the drawings, but the scope of protection is not limited thereto.
As shown in fig. 1, the large-diameter prefabricated direct-buried heat insulation pipe comprises a working steel pipe 1, wherein a first heat insulation layer 2 is arranged on the outer side of the working steel pipe 1, a first glass wool glass fiber cloth layer 3 is wrapped on the outer side of the first heat insulation layer 2, a polyethylene foam buffer layer 4 is wrapped on the outer side of the first glass wool glass fiber cloth layer 3, a second heat insulation layer 5 is wrapped on the outer side of the polyethylene foam buffer layer 4, a second glass wool glass fiber cloth layer 6 is wrapped on the outer side of the second heat insulation layer 5, and an outer protection pipe 7 is arranged on the outer side of the second glass wool glass fiber cloth layer 6; a plurality of grooves 10 are uniformly arranged on the outer surface of the polyethylene foam buffer layer 4, a plurality of bumps 11 matched with the grooves 10 are uniformly distributed on the inner surface of the second heat-insulating layer 5, and the bumps 11 are embedded into the grooves 10 so that the polyethylene foam buffer layer 4 and the second heat-insulating layer 5 are tightly combined; the joint of the two prefabricated direct-buried heat-insulation pipes is externally provided with a hoop 8 which is annularly arranged, the inner side of the hoop 8 is provided with a sealing ring, and the end surfaces of the prefabricated direct-buried heat-insulation pipes are coated with a waterproof layer 9 (as shown in figure 2). The first heat-insulating layer 2 and the second heat-insulating layer 5 are both composite heat-insulating layers of polyurethane and aerogel felt, wherein the thickness of the aerogel felt is 10mm, and the thickness of the polyurethane is 30 mm.
This embodiment the prefabricated direct-burried insulating tube of big pipe diameter set up polyethylene foam buffer layer 4 between first heat preservation 2 and second heat preservation 5, improve the thermal insulation performance of pipeline on the one hand, on the other hand is to the work steel pipe 1 and the heat preservation protection of inlayer, reduce its pressure that receives, two-layer heat preservation is outer to make its inseparable and the inlayer laminating through the parcel of glass wool fiber cloth layer, lug 11 imbeds in the recess 10 so that produce the easy intermediate position's of staggered floor polyethylene foam buffer layer 4 and the 5 inseparable combinations of second heat preservation, thereby the tight laminating degree of the prefabricated direct-burried insulating tube inner structure of big pipe diameter has been improved. The clamp provided with the sealing ring is used for sealing and fastening the interfaces of the two prefabricated direct-buried heat-insulation pipes, so that the problem of interface leakage is solved.
The above description is for further details of the present invention with reference to specific preferred embodiments, and it should not be understood that the embodiments of the present invention are limited thereto, and it will be apparent to those skilled in the art that the present invention can be implemented in a plurality of simple deductions or substitutions without departing from the scope of the present invention, and all such alterations and substitutions should be considered as belonging to the present invention, which is defined by the appended claims.
Claims (3)
1. A large-diameter prefabricated direct-buried heat insulation pipe comprises a working steel pipe (1), wherein a first heat insulation layer (2) is arranged on the outer side of the working steel pipe (1), and is characterized in that a first glass wool glass fiber cloth layer (3) is wrapped on the outer side of the first heat insulation layer (2), a polyethylene foaming buffer layer (4) is wrapped on the outer side of the first glass wool glass fiber cloth layer (3), a second heat insulation layer (5) is wrapped on the outer side of the polyethylene foaming buffer layer (4), a second glass wool glass fiber cloth layer (6) is wrapped on the outer side of the second heat insulation layer (5), and an outer protection pipe (7) is arranged on the outer side of the second glass wool glass fiber cloth layer (6); a plurality of grooves (10) are uniformly arranged on the outer surface of the polyethylene foam buffer layer (4), a plurality of bumps (11) matched with the grooves (10) are uniformly distributed on the inner surface of the second heat-insulating layer (5), and the bumps (11) are embedded into the grooves (10) so that the polyethylene foam buffer layer (4) and the second heat-insulating layer (5) are tightly combined; the joint of the two prefabricated direct-buried heat-insulation pipes is externally provided with a hoop (8) with a ring, and the inner side of the hoop (8) is provided with a sealing ring.
2. The prefabricated direct-buried heat-insulating pipe with the large pipe diameter as claimed in claim 1, wherein the first heat-insulating layer (2) and the second heat-insulating layer (5) are composite heat-insulating layers of polyurethane and aerogel felt.
3. The prefabricated direct-burried thermal insulation pipe with large pipe diameter according to claim 1, characterized in that the end surface of the prefabricated direct-burried thermal insulation pipe is coated with a waterproof layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121360361.9U CN215293923U (en) | 2021-06-18 | 2021-06-18 | Large-diameter prefabricated direct-buried heat-insulation pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121360361.9U CN215293923U (en) | 2021-06-18 | 2021-06-18 | Large-diameter prefabricated direct-buried heat-insulation pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215293923U true CN215293923U (en) | 2021-12-24 |
Family
ID=79516845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121360361.9U Active CN215293923U (en) | 2021-06-18 | 2021-06-18 | Large-diameter prefabricated direct-buried heat-insulation pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215293923U (en) |
-
2021
- 2021-06-18 CN CN202121360361.9U patent/CN215293923U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102797916B (en) | Multilayer structure glass fiber reinforced plastic tube | |
| CN202203581U (en) | Nonmetal expansion joint | |
| CN113266711A (en) | Prefabricated soft thermal insulation pipe | |
| CN103195985B (en) | There is the conveyance conduit of multilayer composite heat insulation structure | |
| CN203230966U (en) | Conveying pipeline with multilayer composite heat insulation structure | |
| CN215293923U (en) | Large-diameter prefabricated direct-buried heat-insulation pipe | |
| CN206861152U (en) | A kind of double inner tube formula polyurethane thermal pipe | |
| CN218510443U (en) | Prefabricated direct-burried insulating tube of high density polyethylene | |
| CN215172873U (en) | Prefabricated direct-burried energy-conserving insulating tube of nanometer heat preservation | |
| CN215173297U (en) | High-strength heat insulation structure of prefabricated direct-buried heat insulation pipe | |
| JP2000213675A (en) | Connection coupler for duplex tube and duplex tube type adiabatic piping connected by this coupler | |
| CN210240925U (en) | Buried medium pipeline with anti-freezing and damp-proof effects | |
| CN216078665U (en) | Prefabricated direct-burried heat preservation energy-saving pipe | |
| CN110925500A (en) | Composite heat-insulating water pipe | |
| CN210623926U (en) | Polyurethane thermal insulation pipe | |
| CN221097772U (en) | Low-heat-loss direct-buried heat insulation structure for mobile energy storage steam direct-buried pipeline | |
| CN210424184U (en) | Multilayer heat preservation steel pipe | |
| CN215445385U (en) | Insulating tube with corrosion-resistant structure | |
| CN213512677U (en) | Reinforced prefabricated direct-buried heat-insulation pipe | |
| CN213598750U (en) | Steel faucet prestressed steel cylinder concrete thermal insulation pipe | |
| CN210600688U (en) | PIR composite telescopic cold insulation pipe shell | |
| CN215410603U (en) | PE-RT thermal tube with composite heat insulation structure | |
| CN212775998U (en) | Corrosion-resistant polyurethane insulating tube | |
| CN217208322U (en) | Wear-resisting type PE pipe | |
| CN212804622U (en) | Prefabricated direct-burried anticorrosive heat preservation pipeline |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231018 Address after: 041500 Qiaozigou Village, Xincheng Town, Xiangfen County, Linfen City, Shanxi Province (Xiangfen Economic and Technological Development Zone High end Equipment Manufacturing Park) Patentee after: Shanxi Liyuan Zhongtian Energy Saving Technology Co.,Ltd. Address before: 041500 west of Zhaodian village, Xiangfen County, Linfen City, Shanxi Province Patentee before: Shanxi Liyuan Zhongtian thermal insulation and anti-corrosion Engineering Co.,Ltd. |
|
| TR01 | Transfer of patent right |