CN2305543Y - Composite sandwich thermal insulation pipeline - Google Patents
Composite sandwich thermal insulation pipeline Download PDFInfo
- Publication number
- CN2305543Y CN2305543Y CN 96213085 CN96213085U CN2305543Y CN 2305543 Y CN2305543 Y CN 2305543Y CN 96213085 CN96213085 CN 96213085 CN 96213085 U CN96213085 U CN 96213085U CN 2305543 Y CN2305543 Y CN 2305543Y
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- CN
- China
- Prior art keywords
- thermal insulation
- composite sandwich
- layer
- insulation pipeline
- pipeline
- 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.)
- Expired - Fee Related
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- Thermal Insulation (AREA)
- Laminated Bodies (AREA)
Abstract
The utility model relates to a composite sandwich thermal insulation pipeline, which belongs to the field of pipelines. The composite sandwich thermal insulation pipeline of the utility model solves the problem of complicated technology which is desired by traditional thermal insulation modes of pipelines and the nonideal thermal insulation effect of pipelines. A structure mode that an inner layer, an outer layer and a middle sandwich insulating layer are combined into one body is adopted by the composite sandwich thermal insulation pipeline of the utility model. The composite sandwich thermal insulation pipeline of the utility model is used for the conveying of liquids and gases, and the liquids and the gases are need to remain a certain temperature.
Description
The utility model composite sandwich insulation pipe is to be used to carry the pipe special that needs to keep the uniform temperature medium.The conventional pipelines heat preserving method has been carried out great improvement.
Traditional heat preserving method all is to use one deck thermal insulating material, adds protective layer.As tying and roping brushing paint after the windings such as cotton, glass fibre cloth.Perhaps outsourcing plastic tab.The shared shortcoming of these materials is easily aging, and the short time just needs maintain and replace.It costs an arm and a leg to also have outsourcing iron sheet, aluminium skin, aluminium foil etc., and metal heat-conducting coefficient height, and heat insulation effect is poor.Although the thermal insulating material difference that each applying unit adopts, the material of external protection is different with method, and its common shortcoming is an imprecision, and water inlet and air are accelerated heat dissipation of pipeline, thereby do not reached desirable heat insulation effect easily.(ZL 922040478) sandwich heat preservation pipeline is although adopt polyurethane foam as thermal insulation layer, because polyurethane can only bear the temperature below 90 ℃.Just can't use for fed sheet of a media temperature (oil field and central heat supply are all more than 350 ℃) more than 90 ℃ the time.Therefore through improving, adopt the multi-layer heat preserving method.Promptly when the fed sheet of a media temperature surpassed more than 90 ℃, inner thermal insulating layer adopted exotic materials such as rock wool, alumina silicate.For thermal insulation layer and pipeline body are combined closely and the manufacturing conveniently of external protection glass fibre reinforced plastics, added one deck external thermal insulation again, promptly adopt mould to make the polyurethane foam moulding.So just single sandwich heat preservation pipeline has been become compound sandwich heat preservation pipeline.
This structure is characterized in that inner thermal insulating layer can be high temperature resistant.But when bag is tied up no matter adopt to breathe out the type of tiing up or twining to tie up with rock wool to make all that thermal insulation layer and pipeline body are tight to be combined.But second layer thermal insulation layer adopts the polyurethane foam moulding, and this problem has been separated with regard to answering sword.Because of using mould-forming, in foamed forming process, can produce sizable expansive force, inner thermal insulating layer and pipeline body are combined closely.The glass fibre reinforced plastics of external protection is to form with spraying or pasting with the appearance in the polyurethane foam moulding.Thereby whole pipe just become a kind of tight combination, can not reach air and do not intake, and its effect is very desirable.
December nineteen ninety-five, rolling stock section made contrast test in Nanjing by Jiangsu Province planned economy committee energy-saving monitoring center test department, and energy-saving effect is very obvious.(radiation loss of pipe surface is 40.90～48.90W/m
2Be significantly less than national regulation value 116W/m
2)
Its structure description of drawings is as follows:
(1) external protection (glass fibre reinforced plastics) among the figure
(2) external thermal insulation (polyurethane foam)
(3) inner thermal insulating layer (exotic material--rock wool, alumina silicate etc.)
(4) pipeline body (steel pipe)
When mounted, can directly weld or connect with flange plate.Prefabricated when manufacturing in factory according to user's needs.If connect with flange plate, before manufacturing, thermal insulation layer earlier flange plate is welded, and thermal insulation layer can be done to the end, the flange plate place is incubated after the installation again.If the way with welding connects, then when insulation is manufactured, certain distance is reserved so that welding in iron pipe two.Go out to vacate partly by identical craftwork manufacture again after the welding.
In sum: owing to adopted multi-layer structure, so inner thermal insulating layer has adopted exotic material can carry high temperature media.External thermal insulation adopts polyurethane foam, and the pressure that produces in foaming process can make the falsity of inner thermal insulating layer compress.External protection adopts that thermal conductivity is low, proportion is little, shock resistance, corrosion-resistant, ageing-resistant, glass fibre reinforced plastics that the life-span is long, is in the appearance spraying of the polyurethane foam of manufacturing with mould in manufacturing process or pastes and form.So external protection, thermal insulation layer and pipeline body are combined as a whole closely, reach airtight, do not intake, high insulating effect, long characteristics of life-span.
The characteristics of the utility model composite sandwich insulation pipe:
(1) be widely used, can be used for oil field, mine, factory (as chemical industry, rubber, papermaking, food, medicine, power station etc.) resident's central heat supply, all in a word pipelines of the medium (as oil, vapour, water etc.) of conveying maintenance uniform temperature that needs all are suitable for.
(2) composite structured characteristics are that the external thermal insulation polyamine ester produces certain pressure and the falsity of inner thermal insulating layer can be compressed when foaming, make it thermal insulation layer and pipeline body is closely as one.
(3) manufacture technology is simple, need not heat when doing the polyamine ester foaming layer.
(4) fitting operation conveniently can process the back to the field welding installation indoor manufacturing as if new pipeline.If mounted pipeline, then the whole operation process can be carried out at the scene.
The utility model composite sandwich insulation pipe has following advantage compared with the prior art:
(1) simple in structurely is convenient to operation and installs.
(2) be convenient to produce extensive series product in factory.
(3) thermal insulation property is superior, energy-saving effect is obvious.
(4) external protection shock resistance, corrosion-resistant, ageing-resistant can well playing a protective role.
(5) specious.
(6) long service life need not keeped in repair substantially.
Embodiment;
According to the temperature design of fed sheet of a media and calculate the thickness of each thermal insulation layer.First layer is that flocculence then is wrapped on the pipeline body uniformly as if what adopt, simply binds to get final product.If what adopt is shaping material, then only need tie up on pipeline body, carry out second layer insulation-carry out the polyamine ester foaming again, and then paste the glass fibre reinforced plastics protective layer with mold.When producing the glass fibre reinforced plastics protective layer, factory also can adopt the way of spraying.
Claims (3)
1. composite sandwich insulation pipe, it is characterized in that: external protection I and thermal insulation layer 2.3 and body 4 closely combine.
2. according to the described composite sandwich insulation pipe of claim 1, it is characterized in that: outer protective layer 1 adopts glass fibre reinforced plastic material, and thermal insulation layer 2 adopts the foaming of polyamine fat, and thermal insulation layer 3 adopts exotic material.
3. it is characterized in that according to the described composite sandwich insulation pipe of claim 1: can use flange plate to connect and also can directly weld.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96213085 CN2305543Y (en) | 1996-06-13 | 1996-06-13 | Composite sandwich thermal insulation pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96213085 CN2305543Y (en) | 1996-06-13 | 1996-06-13 | Composite sandwich thermal insulation pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2305543Y true CN2305543Y (en) | 1999-01-27 |
Family
ID=33895551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96213085 Expired - Fee Related CN2305543Y (en) | 1996-06-13 | 1996-06-13 | Composite sandwich thermal insulation pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2305543Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329539A (en) * | 2014-10-28 | 2015-02-04 | 宁夏天纵泓光余热发电技术有限公司 | Submerged arc furnace flue gas vacuum heat-preserving pipe with zirconium oxide fiber refractory casting material layer |
| CN104455932A (en) * | 2014-10-28 | 2015-03-25 | 宁夏天纵泓光余热发电技术有限公司 | Novel submerged arc furnace smoke heat preservation pipe |
| CN106641584A (en) * | 2016-11-21 | 2017-05-10 | 无锡金顶石油管材配件制造有限公司 | Antifreezing petroleum pipeline |
-
1996
- 1996-06-13 CN CN 96213085 patent/CN2305543Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329539A (en) * | 2014-10-28 | 2015-02-04 | 宁夏天纵泓光余热发电技术有限公司 | Submerged arc furnace flue gas vacuum heat-preserving pipe with zirconium oxide fiber refractory casting material layer |
| CN104455932A (en) * | 2014-10-28 | 2015-03-25 | 宁夏天纵泓光余热发电技术有限公司 | Novel submerged arc furnace smoke heat preservation pipe |
| CN104329539B (en) * | 2014-10-28 | 2016-08-17 | 宁夏天纵泓光余热发电技术有限公司 | There is the mineral heating furnace flue vacuum heat-preserving tube of the Zirconium oxide fibre refractory casting bed of material |
| CN104455932B (en) * | 2014-10-28 | 2016-08-24 | 宁夏天纵泓光余热发电技术有限公司 | Novel mineral heating furnace flue insulating tube |
| CN106641584A (en) * | 2016-11-21 | 2017-05-10 | 无锡金顶石油管材配件制造有限公司 | Antifreezing petroleum pipeline |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |