CN218543619U - Cold and hot water direct-buried heat preservation pipeline - Google Patents
Cold and hot water direct-buried heat preservation pipeline Download PDFInfo
- Publication number
- CN218543619U CN218543619U CN202221886136.3U CN202221886136U CN218543619U CN 218543619 U CN218543619 U CN 218543619U CN 202221886136 U CN202221886136 U CN 202221886136U CN 218543619 U CN218543619 U CN 218543619U
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- heat preservation
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- heat
- cold
- density polyethylene
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- 238000004321 preservation Methods 0.000 title claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 32
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 32
- 238000009413 insulation Methods 0.000 claims abstract description 30
- 229920006327 polystyrene foam Polymers 0.000 claims abstract description 26
- 229920005830 Polyurethane Foam Polymers 0.000 claims abstract description 18
- 239000011496 polyurethane foam Substances 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 229920003023 plastic Polymers 0.000 claims abstract description 9
- 239000004033 plastic Substances 0.000 claims abstract description 9
- 239000002131 composite material Substances 0.000 claims abstract description 6
- 238000004804 winding Methods 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 3
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 2
- 239000004800 polyvinyl chloride Substances 0.000 claims description 2
- 238000009933 burial Methods 0.000 claims 2
- 229920006328 Styrofoam Polymers 0.000 claims 1
- 230000001681 protective effect Effects 0.000 claims 1
- 239000008261 styrofoam Substances 0.000 claims 1
- 238000005253 cladding Methods 0.000 abstract description 3
- 239000004698 Polyethylene Substances 0.000 abstract 1
- 239000000155 melt Substances 0.000 abstract 1
- -1 polyethylene Polymers 0.000 abstract 1
- 229920000573 polyethylene Polymers 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 239000012774 insulation material Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
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
- F16L59/00—Thermal insulation in general
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
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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
- F16L9/00—Rigid pipes
- F16L9/12—Rigid pipes of plastics with or without reinforcement
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Insulation (AREA)
Abstract
The utility model provides a hot and cold water direct-burried insulating tube includes hot and cold water transmission pipeline and cladding in the composite insulation layer of hot and cold water transmission pipeline outer wall, and the heat preservation from interior to exterior is polyurethane foam layer, polystyrene foam heat preservation, thermal-insulated backplate and polyethylene wound form shell in proper order. The utility model adopts polyurethane foam plastic and polystyrene foam plastic as the heat preservation layer, compared with the traditional heat preservation pipe, the utility model greatly improves the thickness of the heat preservation layer, greatly improves the heat preservation performance and lowers the cost; furthermore, the utility model discloses be equipped with thermal-insulated backplate between heat preservation and high density polyethylene wound form shell, the high density polyethylene material that can avoid high temperature to extrude melts the polystyrene foam heat preservation.
Description
Technical Field
The utility model belongs to the technical field of the pipeline heat preservation technique and specifically relates to a hot and cold water direct-burried insulating tube way.
Background
Energy conservation is the basic national policy of China, and along with the implementation of the double-carbon target, effective utilization of energy and reduction of energy waste are increasingly emphasized by governments and related enterprises. In the heat supply industry, the heat dissipation of a cold and hot water direct-buried heat insulation pipeline is a very large heat loss source, heat insulation is needed to be carried out on the pipeline to reduce heat loss, and main factors determining heat insulation and heat dissipation losses are heat insulation materials and the thickness of a heat insulation layer, so that the selection of proper heat insulation materials and the selection of reasonable heat insulation thickness are very important.
The main structure of the existing cold and hot water direct-buried heat preservation pipe is as follows: the working pipe, the polyurethane foam heat-insulating layer and the high-density polyethylene sleeve pipe are arranged, and the heat-insulating thickness generally extends to about 40mm before years. The price of the heat insulation material is not changed greatly when the current heat price is greatly increased compared with the 80 s in the 20 th century. According to the standard
The calculation principle of the insulation economic thickness in GBT 8175-2008 equipment and pipeline insulation design guide: in order to obtain the best heat-preservation economic effect, the adopted heat-preservation thickness meets the following requirements: the investment of the heat preservation structure and the cost in a certain maintenance period do not exceed the cost of saving energy, namely the economic thickness is determined when the sum of the annual heat dissipation loss cost and the annual investment sharing cost after heat preservation is the minimum value. In addition, the severe reality of global continuous warming also urgently requires reduction of energy consumption in various industries. In the current context of hot (cold) prices and insulation prices, we should resort to greater insulation thicknesses to ensure optimum economy and reduce energy consumption.
Meanwhile, with the great rise of the current energy price, the prices of various heat-insulating materials are changed differently; such as rising costs of polyurethane foam. Therefore, it is necessary to use a combination of more cost effective insulating materials to make a hot and cold water direct-burried insulating pipe and determine the optimal insulating thickness.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a novel cold and hot water direct-buried heat preservation pipeline which is developed after comprehensive comparison of cost performance of various heat preservation material characteristics and prices, and comprises a cold and hot water transmission pipeline and a composite heat preservation layer coated on the outer wall of the cold and hot water transmission pipeline, wherein the composite heat preservation layer sequentially comprises a polyurethane foam layer, a polystyrene foam heat preservation layer, a heat insulation guard plate and a high-density polyethylene winding type shell from inside to outside;
and after the surface of the polystyrene foam plastic heat-insulating layer is wrapped with a heat-insulating protection plate, the extruded high-density polyethylene material is spirally wound layer by layer and covers the surface of the heat-insulating protection plate to form the high-density polyethylene wound shell.
Further, the highest temperature resistance of the heat insulation guard plate is not lower than the material extrusion temperature of the high-density polyethylene winding type shell.
Furthermore, the thickness of the polyurethane foam plastic layer is 10 mm-110 mm, and the thickness of the polystyrene foam plastic heat-insulating layer is 100-200mm.
Further, the maximum temperature endurance of the heat insulation protection plate is at least 120 ℃.
Further, the heat insulation guard plate is made of high-density polyethylene or polyvinyl chloride.
The utility model provides a novel hot and cold water insulating tube has improved waterproof and corrosion-resistant ability, simple structure, light in weight, and is with low costs, preparation construction convenience. Be equipped with the heat preservation outward in proper order at the hot and cold water steel pipe, thermal-insulated backplate, wound form shell, wherein, the heat preservation is polyurethane foam layer and polystyrene foam, and thermal-insulated backplate is High Density Polyethylene (HDPE), and the wound form shell is successive layer wound form High Density Polyethylene (HDPE) that the high temperature was extruded, and its advantage lies in:
1) Compared with the prior cold and hot water heat preservation pipe which adopts single polyurethane foam as the heat preservation layer material, the utility model brings in the polystyrene foam with better economical efficiency and the polyurethane foam layer to jointly form the heat preservation layer, simultaneously greatly improves the thickness of the heat preservation layer, and reduces the cost while greatly improving the heat preservation performance;
2) A polyurethane foam layer with good heat resistance is arranged between the polystyrene foam and the working steel pipe, so that the high-temperature working steel pipe can be prevented from melting the polystyrene foam;
3) A heat insulation guard plate is arranged between the heat insulation layer and the high-density polyethylene winding type shell, so that the polystyrene foam plastic heat insulation layer can be prevented from being melted due to high temperature in the process of manufacturing the heat insulation pipe, and the quality of the heat insulation layer is ensured;
4) Compared with the prior art, the high-density polyethylene sleeve is adopted, the utility model discloses an adopt high temperature to extrude high-density polyethylene material and be heliciform successive layer winding cover and form the shell on thermal-insulated backplate surface, can reduce shell thickness.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural view of a hot and cold water direct-buried heat-insulating pipeline provided by the present invention;
fig. 2 is a processing flow chart of the present invention.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.
In order to thoroughly understand the present invention, detailed steps and detailed structures will be provided in the following description so as to explain the technical solution of the present invention. The preferred embodiments of the present invention are described in detail below, however, the present invention can have other embodiments in addition to the detailed description.
Referring to fig. 1, the utility model provides a hot and cold water direct-burried insulating tube that machining efficiency is high includes hot and cold water transmission pipeline 1 and the cladding in the composite insulation layer of hot and cold water transmission pipeline 1 outer wall. Wherein, cold and hot water transmission pipeline 1 adopts common steel pipe, and compound heat preservation is polyurethane foam layer 2, polystyrene foam heat preservation 3, thermal-insulated backplate 4 and high density polyethylene wound form shell 5 in proper order from inside to outside.
Compared with the prior cold and hot water heat preservation pipe, the utility model adopts the sole thickness to be 40mm ~ 60mm polyurethane foam as the heat preservation material, the utility model discloses quote the more excellent polystyrene foam of economic nature and constitute the heat preservation, only have 1/3 of polyurethane foam at its purchase cost, greatly reduced manufacturing cost. Meanwhile, considering that the highest temperature (80 ℃) resistance of the polystyrene foam is lower than the temperature of the hot water transmission pipeline 1 in certain use scenes, a polyurethane foam layer 2 is further arranged between the polystyrene foam insulation layer 3 and the hot and cold water transmission pipeline 1, the heat-resistant temperature of the polyurethane foam layer can reach 160 ℃ at most, and the polystyrene foam insulation layer 3 is prevented from being melted by a high-temperature working steel pipe while the heat insulation effect is achieved.
Furthermore, the utility model discloses be equipped with the thermal-insulated backplate 4 of one deck between polystyrene foam heat preservation 3 and high density polyethylene wound form shell 5, the highest temperature that can withstand of thermal-insulated backplate 4 is not less than the extrusion temperature of high density polyethylene wound form shell 5, and the effect of thermal-insulated backplate 4 lies in: because the highest temperature that can withstand of polystyrene foam heat preservation 3 is only about 80 ℃, if direct high density polyethylene material winding that extrudes the high temperature is on 3 surfaces of polystyrene foam heat preservation, thereby can cause the heat preservation surface to melt and destroy insulation construction, thereby consider this factor, as shown in fig. 2, the utility model discloses behind shaping polystyrene foam heat preservation 3, at the prefabricated thermal-insulated backplate 4 of the outer wall surface of polystyrene foam heat preservation 3 cladding one deck earlier, can twine the high density polyethylene material successive layer that the high temperature was extruded at once at a later time at thermal-insulated backplate 4 formation high density polyethylene wound form shell 5, can avoid polystyrene foam heat preservation 3 to receive high temperature to influence and melt from this, guarantee the heat preservation quality.
In addition, be different from prior art and adopt the high density polyethylene sleeve pipe as the shell of comparing, the utility model discloses a high density polyethylene wound form shell can reduce the thickness of high density polyethylene shell.
In an optional embodiment, the thickness of polyurethane foam layer 2 is 10mm ~ 110mm, and the thickness of polystyrene foam heat preservation 3 is 100-200mm, and it is only 40mm thick to compare traditional heat preservation, the utility model discloses improved heat preservation thickness by a wide margin, though it has increased certain manufacturing cost, the economic benefits that it brought will be far more than the cost that material thickness increases, has reduced heat loss simultaneously, plays the positive role to the effective use of social energy.
The utility model discloses in, thermal-insulated backplate 4 chooses the high density polyethylene material that high temperature resistance can be superior to polystyrene foam for use, and the high density polyethylene wound form shell 5 that the high temperature was extruded is with the thermal-insulated backplate 4 of normal atmospheric temperature high density polyethylene, and the bonding material is the same, and both combine inseparabler.
The above description is directed to the preferred embodiment of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that equipment and structures not described in detail are understood to be practiced in a manner that is conventional in the art; without departing from the scope of the invention, it is intended that the present invention shall not be limited to the above-described embodiments, but that the present invention shall include all the modifications and variations of the embodiments. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention all still fall within the protection scope of the technical solution of the present invention, where the technical entity does not depart from the content of the technical solution of the present invention.
Claims (5)
1. A cold and hot water direct-buried heat preservation pipeline comprises a cold and hot water transmission pipeline (1) and a composite heat preservation layer coated on the outer wall of the cold and hot water transmission pipeline (1), and is characterized in that the composite heat preservation layer sequentially comprises a polyurethane foam plastic layer (2), a polystyrene foam plastic heat preservation layer (3), a heat insulation protection plate (4) and a high-density polyethylene winding type shell (5) from inside to outside;
after the surface of the polystyrene foam plastic heat-insulating layer (3) is wrapped with the heat-insulating protection plate (4), the extruded high-density polyethylene material is spirally wound layer by layer to cover the surface of the heat-insulating protection plate (4) to form the high-density polyethylene wound shell (5).
2. The direct burial thermal insulation piping for cold and hot water according to claim 1, wherein the thickness of the polyurethane foam layer (2) is 10mm to 110mm, and the thickness of the styrofoam insulation layer (3) is 100 mm to 200mm.
3. The pipeline according to claim 1, wherein the heat insulation shield (4) has a maximum temperature resistance not lower than the material extrusion temperature of the high density polyethylene wound housing (5).
4. A hot and cold water direct-burried heat preservation pipe according to claim 3, characterized in that the maximum tolerable temperature of the heat-insulating shield (4) is at least 120 ℃.
5. The direct burial thermal insulation pipeline for cold and hot water according to claim 1, wherein the thermal insulation protective plate (4) is made of high density polyethylene or polyvinyl chloride.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221886136.3U CN218543619U (en) | 2022-07-21 | 2022-07-21 | Cold and hot water direct-buried heat preservation pipeline |
| PCT/CN2023/108529 WO2024017360A1 (en) | 2022-07-21 | 2023-07-21 | Directly buried hot and cold water thermal insulation pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221886136.3U CN218543619U (en) | 2022-07-21 | 2022-07-21 | Cold and hot water direct-buried heat preservation pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218543619U true CN218543619U (en) | 2023-02-28 |
Family
ID=85266466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221886136.3U Active CN218543619U (en) | 2022-07-21 | 2022-07-21 | Cold and hot water direct-buried heat preservation pipeline |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN218543619U (en) |
| WO (1) | WO2024017360A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024017360A1 (en) * | 2022-07-21 | 2024-01-25 | 上海科华热力管道有限公司 | Directly buried hot and cold water thermal insulation pipeline |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2320877Y (en) * | 1997-06-28 | 1999-05-26 | 吴英华 | Insulating shell |
| AU2008233375A1 (en) * | 2007-10-24 | 2009-05-14 | Harrill Ashley CHALLENOR | Pipe Insulation |
| CN201866470U (en) * | 2010-11-24 | 2011-06-15 | 天津市管道工程集团有限公司保温管厂 | Rigid polyurethane-sprayed polyethylene-twined prefabrication buried thermal insulation pipe |
| DE102010054490A1 (en) * | 2010-12-14 | 2012-06-14 | Rehau Ag + Co. | Plastic composite pipe, its use and process for its production |
| CN203404562U (en) * | 2013-08-09 | 2014-01-22 | 中国石油天然气集团公司 | Polyurethane foaming plastic thermal insulation pipeline |
| CN218543619U (en) * | 2022-07-21 | 2023-02-28 | 上海科华热力管道有限公司 | Cold and hot water direct-buried heat preservation pipeline |
-
2022
- 2022-07-21 CN CN202221886136.3U patent/CN218543619U/en active Active
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2023
- 2023-07-21 WO PCT/CN2023/108529 patent/WO2024017360A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024017360A1 (en) * | 2022-07-21 | 2024-01-25 | 上海科华热力管道有限公司 | Directly buried hot and cold water thermal insulation pipeline |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024017360A1 (en) | 2024-01-25 |
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