CN203202439U - Thermal-insulation heating pipeline made of composites - Google Patents
Thermal-insulation heating pipeline made of composites Download PDFInfo
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- CN203202439U CN203202439U CN 201320041450 CN201320041450U CN203202439U CN 203202439 U CN203202439 U CN 203202439U CN 201320041450 CN201320041450 CN 201320041450 CN 201320041450 U CN201320041450 U CN 201320041450U CN 203202439 U CN203202439 U CN 203202439U
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Abstract
The utility model relates to a thermal-insulation heating pipeline made of composites. The thermal-insulation heating pipeline comprises a working pipeline, a thermal-insulation layer and an outer protection layer. The working pipeline and the outer protection layer are made of glass reinforced plastics, and the thermal-insulation layer is made of polyurethane. The thermal-insulation heating pipeline made of composites is good in thermal-insulation property, anti-corrosion, not prone to scaling, convenient to construct and maintain, low in operation cost, good in comprehensive benefit and suitable for thermal-insulation works such as application region heating. The heat conductivity coefficient of glass reinforced plastic heat conductivity coefficient is low and only about 1% of that of a steel tube, and the glass reinforced plastic working pipeline can be treated as a thermal-insulation layer to be subjected to thermal-insulation design, accordingly, the thickness of the polyurethane thermal-insulation layer is reduced, and thermal-insulation costs are saved.
Description
Technical field
The utility model relates to New Building Materials, specially refers to the insulation heating pipe that a kind of composite material is made.
Background technique
District heating in China at present remains a large amount of use steel pipes, adopts the polyurethane material insulation, just uses glass fiber reinforced plastics composite material as external protection.The thermal insulation pipe that also has the part heat enginnering to use is enclosed within glass fiber reinforced plastics composite material on the steel pipe or with the glass fiber reinforced plastics composite material pipe box and (is referred to as " pipe-in-pipe ") on steel pipe, also adopts the external protection of polyurethane heat-insulation and other form then.
But show that according to investigation there are some commonplace shortcomings in the conventional steel tubing that is using at present: (1) antiseptic property is poor, working life is short, and the general life-span just needed to change about 10 years; (2) proportion is bigger, the mounting cost height, and construction is complicated; (3) hydraulic performance is poor, the energy consumption height; (4) comprehensive cost height.
In addition, steel heat distribution pipeline distinct issues in service are that decay resistance is relatively poor, at present, the natural resources in the whole world is deficient day by day, therefore energy-conservation and environment-friendly materials enjoy the extensive concern of countries in the world, and the ester heating pipe of new structure and composite material is compared with the conventional steel heat distribution pipeline, not only can save great deal of steel, and designability is strong, high insulating effect and long service life.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, the insulation heating pipe that provides a kind of novel composite material to make.Insulation heating pipe of the present utility model wants to overcome a series of shortcomings of present steel heat distribution pipeline, improves working life, reduces cost of installation and use, enhances productivity.
In order to reach the foregoing invention purpose, the technological scheme that the utility model provides is as follows:
A kind of insulation heating pipe of composite material; it is characterized in that; this insulation heating pipe includes service pipe, thermal insulation layer and external protection from inside to outside; described service pipe is the glass fibre reinforced plastics material; the outer wall of described service pipe is wrapped with described thermal insulation layer; the thermal insulation layer outside is provided with external protection, and described external protection also is the glass fibre reinforced plastics material, and described thermal insulation layer is made by polyurethane.
In the protection heating pipe of the utility model composite material, the fiber reinforced plastic pipe of described service pipe for adopting fixed length wet method spiral canoe to make.
In the protection heating pipe of the utility model composite material, described external protection is the glass fibre reinforced plastics external protection that mechanical winding method is made.
In the protection heating pipe of the utility model composite material, described thermal insulation layer injects the polyurethane protective layer that foaming is made for machinery.
Based on above-mentioned technology contents, insulation heating pipe of the present utility model is compared with the pipeline of prior art has following technological merit:
1. in order to reduce the cost of glass fibre reinforced plastics heating pipe, when carrying out the polyurethane insulation coating design, calculating on the basis of principle with reference to traditional heat distribution pipeline insulation, do following supposition: (1) regards the glass fibre reinforced plastics service pipe as one deck thermal insulation layer; (2) hot aqueous medium's temperature in the fiber reinforced plastic pipe inner wall temperature equals to manage; (3) owing to the thinner thickness of glass fibre reinforced plastics external protection, its insulation effect is ignored.Based on above supposition, adopt the double-layer heat insulation method to carry out designing and calculating to glass fiber reinforced plastics composite material heating pipe insulation layer thickness.
2. the glass fibre reinforced plastics thermal insulation pipe with inner diameter D N300 is example, its result of calculation shows: the insulation layer thickness value of calculating by double layer design is 50mm, should be 60mm with individual layer thermal insulation layer design-calculated insulation layer thickness value, namely identical with conventional steel heating power pipe, the two is compared every meter polyurethane insulation coating and differs 0.014m
3, the thermal insulation layer unit price differs 33 yuan/m, and every meter thermal insulation layer cost saves 24%.Therefore, take all factors into consideration from each side such as cost, constructions, glass fiber reinforced plastics composite material heating pipe should carry out the polyurethane insulation coating Thickness Design by the double-layer heat insulation layer method.
Description of drawings
Fig. 1 is glass fiber reinforced plastics composite material heating tubular construction schematic representation of the present utility model.
Fig. 2 is direct-burried glass fiber reinforced plastics composite material heating pipe sectional schematic diagram of the present utility model.
Embodiment
Below we come insulation heating pipe of the present utility model done further with specific embodiment by reference to the accompanying drawings and elaborate; form and production method in the hope of understand structure of the present utility model more cheer and brightly, but can not limit protection domain of the present utility model with this.
On structure, as shown in Figure 1, insulation heating pipe of the present utility model includes service pipe 1, thermal insulation layer 3 and external protection 2 from inside to outside.Service pipe 1 is the glass fibre reinforced plastics material, and the outer wall of service pipe 1 is wrapped with thermal insulation layer 3, and thermal insulation layer 3 outsides of being made by polyurethane are provided with the external protection 2 of glass fibre reinforced plastics material.
Insulation heating pipe of the present utility model is a kind of glass fiber reinforced plastics composite material heating pipe; it is to adopt fiber fw frp pipeline as the service pipe 1 of delivering hot water's medium; adopt polyurethane as the thermal insulation layer 3 of centre, adopt the fiber fw frp as a kind of advanced composite material (ACM) heating pipe of external protection 2.
In the protection heating pipe of the utility model composite material, the fiber reinforced plastic pipe of described 1 service pipe for adopting fixed length wet method spiral canoe to make.The glass fibre reinforced plastics external protection that described external protection 2 is made for mechanical winding method.Described thermal insulation layer 3 injects the polyurethane protective layer that foaming is made for machinery.
The utility model, is calculating on the basis of principle with reference to traditional heat distribution pipeline insulation when carrying out the polyurethane insulation coating design for reducing the cost of glass fibre reinforced plastics heating pipe, and do following supposition: (1) regards the glass fibre reinforced plastics service pipe as one deck thermal insulation layer; (2) hot aqueous medium's temperature in the fiber reinforced plastic pipe inner wall temperature equals to manage; (3) owing to the thinner thickness of glass fibre reinforced plastics external protection, its insulation effect is ignored.
Based on above supposition, as shown in Figure 2, adopt the double-layer heat insulation method to carry out designing and calculating to glass fiber reinforced plastics composite material heating pipe insulation layer thickness, it is h that heating pipe is positioned over the degree of depth of ground below 4, wherein the internal diameter of service pipe 1 is d0, external diameter is d1, is the internal diameter of thermal insulation layer, and the external diameter of thermal insulation layer is d2.Being positioned at the liquid of heating pipe or the temperature of gas is t0, and the inside and outside temperature of thermal insulation layer is respectively t1 and t2.Glass fibre reinforced plastics thermal insulation pipe with inner diameter D N300 is example, result of calculation shows: the insulation layer thickness value of calculating by double layer design is 50mm, should be 60mm with individual layer thermal insulation layer design-calculated insulation layer thickness value, namely identical with conventional steel heating power pipe, the two is compared every meter polyurethane insulation coating and differs 0.014m
3, the thermal insulation layer unit price differs 33 yuan/m, and every meter thermal insulation layer cost saves 24%.Therefore, take all factors into consideration from each side such as cost, constructions, glass fiber reinforced plastics composite material heating pipe should carry out the polyurethane insulation coating Thickness Design by the double-layer heat insulation layer method.
At different execution conditions, the structure of insulation heating pipe of the present utility model and be manufactured with dual mode is illustrated as with embodiment's form:
Glass fiber reinforced plastics composite material heating pipe in the present embodiment comprises the service pipe 1 of glass fibre reinforced plastics material, the thermal insulation layer 3 of polyurethane material, external protection 2 three part-structures of glass fibre reinforced plastics material.Wherein, the service pipe 1 of glass fibre reinforced plastics material adopts fixed length wet method spiral winding process in the plant produced manufacturing, and the thermal insulation layer 3 of polyurethane material adopts machinery to inject foaming, adopts machinery to twine legal system at last and makes glass fibre reinforced plastics as external protection 2.Heating pipe three-decker in the present embodiment is all in the factory process moulding, this kind mode manufacturing efficiency height.Characteristics such as glass fiber reinforced plastics composite material heating pipe of the present utility model has that lightweight, high-strength, corrosion resistance are strong, long service life, good heat insulating, performance can design can be used for heat enginnerings such as regional outdoor heating.
Embodiment 2
Glass fiber reinforced plastics composite material heating pipe in the present embodiment comprises the service pipe 1 of glass fibre reinforced plastics material, the thermal insulation layer 3 of polyurethane material, external protection 2 three part-structures of glass fibre reinforced plastics material.Wherein the service pipe 1 of glass fibre reinforced plastics material adopts fixed length wet method spiral winding process in the plant produced manufacturing, and the moulding of thermal insulation layer 3 then is to adopt the manual foaming that injects, and the external protection 2 of glass fibre reinforced plastics material is manual manufacture at the construction field (site).After the thermal insulation layer 3 of polyurethane material adopts foam-in-place to complete, twine three layers of glass cloth again by designing requirement, and alternately brush four road resins.
Characteristics such as glass fiber reinforced plastics composite material heating pipe of the present utility model has that lightweight, high-strength, corrosion resistance are strong, long service life, good heat insulating, performance can design can be used for heat enginnerings such as regional outdoor heating.
Claims (4)
1. the insulation heating pipe of a composite material; it is characterized in that; this insulation heating pipe includes service pipe (1), thermal insulation layer (3) and external protection (2) from inside to outside; described service pipe is the glass fibre reinforced plastics material; the outer wall of described service pipe (1) is wrapped with described thermal insulation layer (3), and thermal insulation layer (3) outside of being made by polyurethane is provided with the external protection (2) of glass fibre reinforced plastics material.
2. the insulation heating pipe of a kind of composite material according to claim 1 is characterized in that, the fiber reinforced plastic pipe of described service pipe (1) for adopting fixed length wet method spiral canoe to make.
3. the insulation heating pipe of a kind of composite material according to claim 1 is characterized in that, the glass fibre reinforced plastics external protection that described external protection (2) is made for mechanical winding method.
4. the insulation heating pipe of a kind of composite material according to claim 1 is characterized in that, described thermal insulation layer (3) injects the polyurethane insulation coating that foaming is made for machinery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320041450 CN203202439U (en) | 2013-01-25 | 2013-01-25 | Thermal-insulation heating pipeline made of composites |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320041450 CN203202439U (en) | 2013-01-25 | 2013-01-25 | Thermal-insulation heating pipeline made of composites |
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| Publication Number | Publication Date |
|---|---|
| CN203202439U true CN203202439U (en) | 2013-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320041450 Expired - Fee Related CN203202439U (en) | 2013-01-25 | 2013-01-25 | Thermal-insulation heating pipeline made of composites |
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| CN (1) | CN203202439U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151621A (en) * | 2021-11-16 | 2022-03-08 | 大连理工大学 | Composite interlayer heat-insulating pipeline for ocean temperature difference energy conversion |
-
2013
- 2013-01-25 CN CN 201320041450 patent/CN203202439U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151621A (en) * | 2021-11-16 | 2022-03-08 | 大连理工大学 | Composite interlayer heat-insulating pipeline for ocean temperature difference energy conversion |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130918 Termination date: 20140125 |