CN205244636U - Outer ripple type heat preservation plastics heating / cooling pipe - Google Patents
Outer ripple type heat preservation plastics heating / cooling pipe Download PDFInfo
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- CN205244636U CN205244636U CN201520826994.2U CN201520826994U CN205244636U CN 205244636 U CN205244636 U CN 205244636U CN 201520826994 U CN201520826994 U CN 201520826994U CN 205244636 U CN205244636 U CN 205244636U
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Abstract
The utility model belongs to the technical field of construction pipe, concretely relates to wide application is in heat -resisting type polyethylene heating / the cooling pipe of the secondary heat supply pipe network that carries life hot water, hot spring water and central heating and concentrated cooling's usefulness. Outer ripple type heat preservation plastics heating / cooling pipe, the heat -resisting polyethylene inner tube and the polyethylene outer tube that set gradually including from interior to exterior, heat -resisting polyethylene inner tube with it has polyurethane foam plastics heat preservation to fill between the polyethylene outer tube. Heat -resisting polyethylene inner tube application temperature can reach 85 DEG C, has good temperature resistance behavior, can carry general life hot water and hot spring water etc.. And this material has good resistance to low temperature, and lower -temperature using can reach - 40 DEG C, and cooling pipeline use in the centralized refrigeration engineering can be regarded as to the whole tubular product of event.
Description
Technical field
The utility model belongs to building pipe technical field, is specifically related to one and is widely used in carrying rawThe heat resistant type of the secondary heating pipe network of hot water, thermal water and central heating and the use of central cooling of living is poly-Ethene heating/cooling pipe.
Background technology
Polyethylene (PE) is high, the nonpolar thermoplastic resin of a kind of degree of crystallinity. Ortho states is polyMilky appearance, is to a certain degree translucent in meagre cross section. PE have good resistance to mostlyThe characteristic of number life and chemicals for industrial use, the application of PE material is boundless, and tubing field is also poly-An importance in ethene application.
Vinyon tubing mainly divides two large classes: high density polyethylene (low-pressure polyethylene) andLow density polyethylene (polyethylene from high pressure process). Owing to existing in HDPE and LDPE physical propertyDifference, so bi-material is had nothing in common with each other on pipe applications field: low density polyethylene (LDPE) (LDPE)There is good pliability, but resistance to compression compressive resistance is lower, so can only be used for low-pressure minor diameterTubing, it is often made into coil pipe and for the occasion of rural water improvement and some non-long-term uses; AndHigh-density polyethylene material (HDPE) is owing to having good compressive property, so be widely used in pressingSolenoid field. Common polythene tubing have connect reliable, low-temperature impact resistance is good, resistance to chemical attackProperty is good, ageing-resistant, long service life, the advantage such as wearability is good, pliability is good, convenient in carrying. ButBeing that common polythene tubing is just difficult to long-term use above at 60 DEG C, is also limit its development one scarce greatlyFall into.
At the initial stage of Plastic Pipe Development, the use of PE pressure pipe is much smaller than polyvinyl chloride,And along with the appearance of HDPE new material, new technology, the difference on this cost (weight) has occurredVery large variation. Along with second generation polyethylene pipe material (being equivalent to PE80) and third generation polyethylene pipeThe appearance of material (being equivalent to PE100), under the same same pressure rating of diameter 200 and condition,The weight of the polyvinyl piping materials of equal length is 93% of UPVC tubing weight. So, the second generationNot only show to land with the polyethylene pipe material of the third generation and improved the minimum desired strength of PE, Er QietiHigh environmental stress crack resistance energy, has the cracking resistance seam rapid growth ability showing, and the more important thing isUnder same working pressure, can reduce wall thickness, increase and carry cross section, and increase institute under same wall thicknessWith pressure, improve conveying capacity. Along with the improvement of polyethylene technology, economic benefit is significant.It was reported that recently, the 4th generation polyethylene pipe material PE125 succeeds in developing, can predict thus,Larger diameter, the polyethylene pressure pipe road that has more economy have more wide use field.
The new material that heat-proof polythene (PE-RT) tubing develops especially on this basis, it bothHave advantages of that cross-linked polyethylene pipe is high temperature resistant, non-scaling, the tubing having made up again after being cross-linked can notHot melt connects, the shortcoming that waste product, substandard products can not regenerations. Compared with common PE pipe, PE-RT pipeMaterial has retained hot melt connection, health, nontoxic, low temperature resistant, flexible, easy working advantage, again moreHaving mended the short shortcoming of deficiency, life-span of PE tubing high-temperature behavior aspect, is current floor heating tubingIn economic and practical novel environment friendly tubing. But because its tubing is not processed through insulation, therefore, meetingWhile causing direct delivering hot water, there is very large thermal loss, cause great waste.
Utility model content
For this reason, technical problem to be solved in the utility model is heat-resisting polyethylene tube in prior artThere is the problem of very large thermal loss in material, and then it is defeated to provide one to be widely used in the time of delivering hot waterSend the heat-resisting of the secondary heating pipe network of domestic hot-water, thermal water and central heating and the use of central coolingType polyethylene heating/cooling pipe.
For solving the problems of the technologies described above, outer ripple type insulating plastic pipe heating/cooling described in the utility modelPipe, comprises the heat-proof polythene inner tube and the polyethylene outer tube that set gradually from the inside to the outside; Described heat-resisting poly-Between ethene inner tube and described polyethylene outer tube, be filled with polyurethane foam plastics heat-insulation layer.
The nominal outside diameter of described heating/cooling pipe is 50mm-520mm.
The nominal outside diameter of described heat-proof polythene inner tube is 16mm-400mm.
The thickness of pipe wall of described heat-proof polythene inner tube is 2.3mm-36.6mm.
The wall thickness of described polyurethane foam plastics heat-insulation layer is 10mm-50mm.
The pipe thickness of described polyethylene outer tube is 2.5mm-8mm.
Described polyethylene outer tube is outer ripple type pipe.
Described polyurethane foam plastics heat-insulation layer is hard foamed layer or flexible foamed layer.
With regard to preparing material, described heat-proof polythene inner tube extruded through extruder by heat-proof polythene and; After the polyethylene outer tube that is set forth in is fully mixed with Masterbatch and antioxidant by polyvinyl resin through extrudingMachine is extruded and is obtained; Described polyurethane foam plastics heat-insulation layer is in heat-resisting poly-second by polyurethane foaming machineThe polyurethane foam material of spraying between alkene inner tube and polyethylene outer tube is processed and is obtained through conventional foaming.
With regard to preparation technology, described heat-proof polythene inner tube and described polyethylene outer tube can be twoExtruder coextrusion obtains concentric sleeve pipe, and in coextrusion, between the interlayer of two sleeve pipesCarry out conventional polyurethane foam process, i.e. One-step production; This tubing also can adopt two-step method rawProduce, first extrude heat-proof polythene inner tube and outer ripple type polyethylene outer tube, then inner tube is inserted inOuter ripple type polyethylene outer tube, adjusts core shift, the polyurethane foam material of finally spraying between inner and outer pipes interlayerMaterial, finally obtains product described in the utility model. Described polyurethane foam is hard foamed or softOne in foaming.
In outer ripple type insulating plastic pipe heating/cooling pipe described in the utility model, in described heat-proof polytheneThe serviceability temperature of tubing can reach 85 DEG C, and thermal conductivity factor is low, can effectively reduce the heat waste of inner tubeLose; Simultaneously described heat-proof polythene inner tube is compared metal pipe material to have thermal conductivity factor low, can less heatLoss; And heat-proof polythene has superpower lower temperature resistance, low temperature uses can reach-40 DEG C, therefore canUse as central cooling pipeline; Outer ripple type insulating plastic pipe heating/cooling pipe described in the utility modelPipe material inner wall is smooth, and transporting resistance is little, can reduce conveying energy consumption; Heat-proof polythene inner tube has excellentGood decay resistance, can reduce maintenance cost.
Say from preparation technology, the foaming method of described insulating foam layer is flexible, simple and easy to control, can beMeet under product requirement prerequisite, optimize production cost. And described polyethylene outer tube is outer corrugated form,Can improve the external force resistance effect of tubing, selected its nominal outside diameter is below 250mm, and can makeThe coil pipe that 1km is long, had both been convenient to transport the connecting interface that also can reduce tubing.
The utility model, by preparing the method for multi-layer tubes, has complementary advantages each layer of tubing, outer rippleType outer tube can increase tubing buried after with the contact area of soil, the external force resistance effect of raising tubing.The existence of intermediate urethane foaming layer can ensure the heat loss that hot fluid is little. Heat-proof polythene inner tubeServiceability temperature can reach 85 DEG C, has good heat resistance, can carry general domestic hot-water and hot springWater etc. This material has again good resistance to low temperature, and low temperature uses can reach-40 DEG C, therefore can be used asIn central refrigerating engineering, cooling pipeline uses.
Brief description of the drawings
For content of the present utility model is more likely to be clearly understood, below according to the utility modelSpecific embodiment by reference to the accompanying drawings, the utility model is described in further detail, wherein
Fig. 1 is the structural representation of heat supply/cooling pipe described in the utility model;
In figure, Reference numeral is expressed as: 1-heat-proof polythene inner tube, and 2-polyurethane foam plastics heat-insulation layer,3-polyethylene outer tube.
Detailed description of the invention
Outer ripple type insulating plastic pipe heating/cooling pipe described in the utility model, comprises from the inside to the outside successivelyThe heat-proof polythene inner tube 1 and the polyethylene outer tube 3 that arrange; Described heat-proof polythene inner tube 1 and described poly-Between ethene outer tube 3, be filled with polyurethane foam plastics heat-insulation layer 2. Described polyurethane foam plastics insulationLayer 2 is hard foamed layer or flexible foamed layer.
With regard to the size of product, the nominal outside diameter of described heating/cooling pipe is 50mm-520mm. ItsIn, the nominal outside diameter of described heat-proof polythene inner tube 1 is 16mm-400mm, described heat-proof polytheneThe thickness of pipe wall of inner tube 1 is 2.3mm-36.6mm; The wall thickness of described polyurethane foam plastics heat-insulation layer 2For 10mm-50mm, the pipe thickness of described polyethylene outer tube 3 is 2.5mm-8mm.
As more preferred embodiment, described polyethylene outer tube 3 is outer ripple type pipe.
With regard to preparing material, described heat-proof polythene inner tube 1 is extruded through extruder by heat-proof polytheneAnd obtain; Warp after the polyethylene outer tube 3 that is set forth in is fully mixed with Masterbatch and antioxidant by polyvinyl resinExtruder is extruded and is obtained; Described polyurethane foam plastics heat-insulation layer 2 is resistance to by polyurethane foaming machineThe polyurethane foam material of spraying between hot polymerization ethene inner tube 1 and polyethylene outer tube 3 is through conventional foaming placeManage and obtain. Described polyurethane foam is the one in hard foamed or flexible foamed.
With regard to preparation technology, described heat-proof polythene inner tube 1 and described polyethylene outer tube 3 can beTwo extruders coextrusion obtains concentric sleeve pipe, and in coextrusion, at the folder of two sleeve pipesInterlayer carries out conventional polyurethane foam process, i.e. One-step production; This tubing also can adopt two stepsMethod is produced, and first extrudes heat-proof polythene inner tube and outer ripple type polyethylene outer tube, then by inner tubeBe inserted in outer ripple type polyethylene outer tube, adjust core shift, the polyurethane of finally spraying between inner and outer pipes interlayer is sent outFoam material, finally obtains product described in the utility model.
Obviously, above-described embodiment is only for example is clearly described, and not to the side of enforcementThe restriction of formula. For those of ordinary skill in the field, also can on the basis of the above descriptionTo make other changes in different forms. Here without also giving all embodimentsWith exhaustive. And the apparent variation of being extended out thus or the still guarantor in the invention of variationProtect among scope.
Claims (7)
1. an outer ripple type insulating plastic pipe heating/cooling pipe, is characterized in that, comprises from the inside to the outside and complying withThe heat-proof polythene inner tube (1) of inferior setting and polyethylene outer tube (3); Described heat-proof polythene inner tube (1)And between described polyethylene outer tube (3), be filled with polyurethane foam plastics heat-insulation layer (2).
2. outer ripple type insulating plastic pipe heating/cooling pipe according to claim 1, is characterized in that,The nominal outside diameter of described heating/cooling pipe is 50mm-520mm.
3. outer ripple type insulating plastic pipe heating/cooling pipe according to claim 2, is characterized in that,The nominal outside diameter of described heat-proof polythene inner tube (1) is 16mm-400mm.
4. outer ripple type insulating plastic pipe heating/cooling pipe according to claim 3, is characterized in that,The thickness of pipe wall of described heat-proof polythene inner tube (1) is 2.3mm-36.6mm.
5. outer ripple type insulating plastic pipe heating/cooling pipe according to claim 2, is characterized in that,The wall thickness of described polyurethane foam plastics heat-insulation layer (2) is 10mm-50mm.
6. outer ripple type insulating plastic pipe heating/cooling pipe according to claim 2, is characterized in that,The pipe thickness of described polyethylene outer tube (3) is 2.5mm-8mm.
7. outer ripple type insulating plastic pipe heating/cooling pipe according to claim 6, is characterized in that,Described polyethylene outer tube (3) is outer ripple type pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520826994.2U CN205244636U (en) | 2015-10-22 | 2015-10-22 | Outer ripple type heat preservation plastics heating / cooling pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520826994.2U CN205244636U (en) | 2015-10-22 | 2015-10-22 | Outer ripple type heat preservation plastics heating / cooling pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205244636U true CN205244636U (en) | 2016-05-18 |
Family
ID=55943713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520826994.2U Active CN205244636U (en) | 2015-10-22 | 2015-10-22 | Outer ripple type heat preservation plastics heating / cooling pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205244636U (en) |
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2015
- 2015-10-22 CN CN201520826994.2U patent/CN205244636U/en active Active
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |