CN202937892U - Compound buried thermal insulation pipe - Google Patents
Compound buried thermal insulation pipe Download PDFInfo
- Publication number
- CN202937892U CN202937892U CN 201220552651 CN201220552651U CN202937892U CN 202937892 U CN202937892 U CN 202937892U CN 201220552651 CN201220552651 CN 201220552651 CN 201220552651 U CN201220552651 U CN 201220552651U CN 202937892 U CN202937892 U CN 202937892U
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- Prior art keywords
- thermal insulation
- compound
- insulation pipe
- glass fibre
- aluminum silicate
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Abstract
The utility model relates to a buried thermal insulation pipe, in particular to the compound buried thermal insulation pipe. The compound buried thermal insulation pipe comprises an inner work steel tube, a compound thermal insulation layer and a glass reinforced plastic outer protection layer, wherein the compound thermal insulation layer comprises an aluminum silicate fiberboard and a rigid polyurethane foam plastic; the inner work steel tube is embedded into the aluminum silicate fiberboard; the aluminum silicate fiberboard is connected with the rigid polyurethane foam plastic through an adhesive; and the glass reinforced plastic outer protection layer is wound outside the tube shell of the rigid polyurethane foam plastic. A first layer adopts an aluminum silicate heat insulating material, so that the usage amount of a polyurethane heat insulating material is reduced, and the material cost is saved. The glass reinforced plastic outer protection layer has the characteristics that the manufacture process is simple, the integrity, the corrosion resistance and the water resistance are good, and the bonding force is high. The buried thermal insulation pipe does not need to be prefabricated in factories and can be directly manufactured on a construction site, and the prefabrication construction period is effectively shortened.
Description
(1) technical field
The utility model relates to a kind of buried heat insulation pipe, particularly relates to a kind of compound buried heat insulation pipe.
(2) background technique
Buried heat insulation pipe is all generally the structural type that adopts polyethylene parcel working steel tube at present, finds Chinese patent " patent name: buried thermal-insulative pipe with polythene through retrieving existing patent documentation; Patent application day: 2004.9.7; Application number: 200410041900.7 " a kind of buried heat insulation pipe is disclosed, comprise working steel tube, hard polyurethane foams thermal insulation layer and high-density polyethylene plastics external protection; Outer surface of steel tube first carries out the solidifying anticorrosion process of cyanogen to be processed; High-density polyethylene plastics external protection inwall carries out corona treatment, and then the injection moulding hard polyurethane foams; There is the shortcoming of non-refractory in the urethane foam thermal insulation layer, in medium temperature during greater than 120 ℃, polyurethane heat insulation material is for a long time under the hot environment effect, can accelerate aging, distortion, the heat insulation effect decrease, and the heat supply pipeline in the underground pipe of heat supply initial station and the medium temperature of drain water piping are respectively 130 ℃ and 300 ℃, and thermal insulation layer directly adopts polyurethane heat insulation material improper; In addition, adopt intrinsic external protection to adopt the high density polyethylene (HDPE) sleeve pipe, more and the negligible amounts of caliber specification, and this sleeve pipe can increase on-the-spot repaired mouth quantity, and the outside protective case of elbow, big or small head makes the waste of tailing in the time of all can increasing blanking, caused purchase cost higher; At last, adopt intrinsic heat preservation method specifically to be had relatively high expectations in prefabricated place and work machine, need to go out that it is prefabricated to carry out in precast plant, increased cost of transportation and fabrication cycle.
(3) model utility content
The utility model according to the deficiency of existing design technology, provides a kind of compound buried heat insulation pipe just.
The technological scheme that the utility model addresses the above problem is as follows: a kind of compound buried heat insulation pipe; comprise interior working steel tube, compound thermal insulation layer and glass fibre reinforced plastics external protection; compound thermal insulation layer comprises aluminosilicate fiberboard, RPUF; interior working steel tube embeds in aluminosilicate fiberboard; aluminosilicate fiberboard external application binder connects a RPUF shell, and the hard polyaminoester plastic case adopts Wet Winding Process one glass fibre reinforced plastics external protection outward.
Seam between the RPUF shell adopt foamed material fill up, floating.
The glass fibre reinforced plastics external protection adopts glass fibre cloth and polyester resin as raw material, on thermal insulation layer, forms external protection after solidifying by Wet Winding Process.
The beneficial effects of the utility model:
1, thermal insulation layer adopts compound heat insulation layer structure first layer insulation first to adopt aluminum silicate insulation material, calculate effective thermal resistance thickness, the appearance temperature of working steel tube is reduced in the allowable temperature of polyurethane heat insulation material (less than 120 ℃) shortcoming of having avoided polyurethane material to be out of shape, to lose efficacy greater than 120 ℃ the time; The second layer adopts the RPUF shell, adopts binder to be connected between shell and aluminosilicate material, and the seam employing foamed material between shell fills up, floating, has guaranteed the integrity of two-layer thermal insulating material.Simultaneously, first layer has adopted aluminum silicate insulation material, has reduced the consumption of polyurethane heat insulation material, has saved the expense of material.
2, the glass fibre reinforced plastics external protection have that preparation process is simple, integrity and corrosion-resistanting waterproofing performance is good, bonding force is strong characteristic.
3, adopting glass fibre cloth to be wound around can carry out at the construction field (site); only need to make two simple pipeline swinging mountings; rotating at any time steel pipe in winding process gets final product; when being wound around, glass fibre cloth can select as required consumption; do not have the waste of tailing, the employing of glass fibre reinforced plastics external protection simultaneously also needn't be considered the problem of casing diameter.
4, adopt the heat preservation method of compound thermal insulation layer and glass fibre reinforced plastics external protection, do not need to carry out prefabrication, can directly carry out at the construction field (site), effectively shortened the prefabricated duration.In addition, the workmen of this technological requirement operative skill that only need have a common heat preservation construction gets final product.
(4) description of drawings
Fig. 1 is the cross-sectional configuration schematic diagram of compound insulation underground pipe.
(5) specific embodiment
By reference to the accompanying drawings 1; described compound insulation underground pipe; interior working steel tube 1 embeds in aluminosilicate fiberboard 2; adopt binder to be connected between RPUF shell 3 and aluminosilicate fiberboard 2; the seam of RPUF shell 3 adopt scared material fill up, floating, glass fibre reinforced plastics external protection 4 adopts Wet Winding Process in RPUF shell 3 outsides.
The above is only the schematic embodiment of the utility model; be not to limit scope of the present utility model; equivalent variations and modification that any those skilled in the art makes under the prerequisite that does not break away from the utility model design and principle all should belong to the scope that the utility model is protected.
Claims (3)
1. compound buried heat insulation pipe; comprise interior working steel tube, compound thermal insulation layer and glass fibre reinforced plastics external protection; it is characterized in that: compound thermal insulation layer comprises aluminosilicate fiberboard, RPUF; working steel tube embeds in aluminosilicate fiberboard; aluminosilicate fiberboard external application binder connects a RPUF shell, and the hard polyaminoester plastic case adopts Wet Winding Process one glass fibre reinforced plastics external protection outward.
2. compound buried heat insulation pipe according to claim 1 is characterized in that: the seam between described RPUF shell adopt foamed material fill up, floating.
3. compound buried heat insulation pipe according to claim 1 is characterized in that: described glass fibre reinforced plastics external protection adopts glass fibre cloth and polyester resin as raw material, on thermal insulation layer, forms external protection after solidifying by Wet Winding Process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220552651 CN202937892U (en) | 2012-10-26 | 2012-10-26 | Compound buried thermal insulation pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220552651 CN202937892U (en) | 2012-10-26 | 2012-10-26 | Compound buried thermal insulation pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202937892U true CN202937892U (en) | 2013-05-15 |
Family
ID=48322130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220552651 Expired - Fee Related CN202937892U (en) | 2012-10-26 | 2012-10-26 | Compound buried thermal insulation pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202937892U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912734A (en) * | 2014-04-18 | 2014-07-09 | 辽宁久大管业有限公司 | Directly buried prefabricated heat-insulation high-temperature hot water tube and production method thereof |
| CN105465553A (en) * | 2015-12-15 | 2016-04-06 | 中投（天津）热能装备发展有限公司 | Glass fiber reinforced plastic composite heat-insulating steam pipe |
| CN109323083A (en) * | 2018-10-30 | 2019-02-12 | 中投（天津）热力股份有限公司 | A kind of efficient, durable heat-insulation pipe manufacturing process |
| CN112026217A (en) * | 2020-09-07 | 2020-12-04 | 安徽祥欣新材料科技有限公司 | Preparation method of polyurethane foamed plastic part |
-
2012
- 2012-10-26 CN CN 201220552651 patent/CN202937892U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912734A (en) * | 2014-04-18 | 2014-07-09 | 辽宁久大管业有限公司 | Directly buried prefabricated heat-insulation high-temperature hot water tube and production method thereof |
| CN103912734B (en) * | 2014-04-18 | 2015-10-28 | 辽宁久大管业有限公司 | A kind of direct-burried prefabricated thermal insulation high-temperature hot water pipe and production method thereof |
| CN105465553A (en) * | 2015-12-15 | 2016-04-06 | 中投（天津）热能装备发展有限公司 | Glass fiber reinforced plastic composite heat-insulating steam pipe |
| CN109323083A (en) * | 2018-10-30 | 2019-02-12 | 中投（天津）热力股份有限公司 | A kind of efficient, durable heat-insulation pipe manufacturing process |
| CN112026217A (en) * | 2020-09-07 | 2020-12-04 | 安徽祥欣新材料科技有限公司 | Preparation method of polyurethane foamed plastic part |
| CN112026217B (en) * | 2020-09-07 | 2022-06-28 | 安徽祥欣新材料科技有限公司 | Preparation method of polyurethane foaming plastic part |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130515 Termination date: 20141026 |
|
| EXPY | Termination of patent right or utility model |