CN2204909Y - Heat isolating pipe with composite layer structure - Google Patents
Heat isolating pipe with composite layer structure Download PDFInfo
- Publication number
- CN2204909Y CN2204909Y CN 94215778 CN94215778U CN2204909Y CN 2204909 Y CN2204909 Y CN 2204909Y CN 94215778 CN94215778 CN 94215778 CN 94215778 U CN94215778 U CN 94215778U CN 2204909 Y CN2204909 Y CN 2204909Y
- Authority
- CN
- China
- Prior art keywords
- pipe
- thermal insulation
- heat isolating
- layer
- composite
- 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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Abstract
The utility model relates to a heat isolating pipe with a composite layer structure, comprising an inner pipe 1, a heat isolating layer 2 and an outer pipe 3, wherein, a composite layer 4 made from composite silicate or magnesium silicate is added between the inner pipe 1 and the heat isolating layer 2; the heat isolating layer 2 adopts a modified PIR plastic foam; one layer of anti-corrosive paint with high temperature resistance can be coated on the outer side of the inner pipe 1. The heat isolating pipe has the advantages of high temperature resistance the maximum service temperature can reach to from 200 DEG C to 350 DEG C, good waterproof performance, corrosion resistance, simple manufacturing technique, etc.
Description
The utility model belongs to the heating system equipment technical field, relates to a kind of thermal insulation pipe with lamination layer structure.
The thermal insulation pipe that is adopted in present district heating system is generally " pipe-in-pipe " (claiming " jacket tube " again) structure, interior pipe 1 is a steel pipe, thermal insulation layer 2 adopts polyurethane rigid foam plastic (PUR), outer tube is the sleeve pipe that glass fibre reinforced plastics or polyethylene are made, and is coated with one deck cyanogen gelatin in the steel pipe appearance sometimes for anticorrosion.Just provide a kind of like this thermal insulation pipe at application number for the Chinese patent application file of CN85201017.The heatproof upper limit of this class thermal insulation pipe generally about 120 ℃, can not adapt to the required resistant to elevated temperatures requirement of city thermal development.
The purpose of this utility model be to provide a kind of can high temperature resistant thermal insulation pipe up to 200-350 ℃, to adapt to city heat supply and otherwise needs.
Basic design of the present utility model is: on the basis of existing thermal insulation pipe, between interior pipe 1 and thermal insulation layer 2, increase a composite bed 4, composite bed 4 is selected suitable thermal insulating material for use, simultaneously with thermal insulation layer 2 is optional can better the PIR cellular insulant, thereby improve the resistance to high temperature of thermal insulation pipe effectively.
Specified below in conjunction with drawings and Examples.Fig. 1 is a structural representation of the present utility model.
As shown in Figure 1, the utility model provides a kind of thermal insulation pipe with lamination layer structure, is made up of interior pipe 1, thermal insulation layer 2, outer tube 3, increases composite bed 4 between interior pipe 1 and thermal insulation layer 2.Composite bed 4 can adopt composite silicate thermal insulation material.This be a kind of be base-material with the nonmetallic ore sepiolite, add auxiliary materials such as a certain proportion of silicious marl and mineral fibre, take special process, the novel heat insulation thermal-protective material that is mixed and made into through tackiness agents such as polyvinyl alcohols.Composite bed 4 also can adopt magnesium silicate insulating material.Thermal insulation layer 2 preferably adopts modified polyisocyanurate (modification PIR) foamed plastics.In order to increase antiseptic effect, can between interior pipe 1 and composite bed 4, scribble one deck fire-resistant anticorrosion paint 5.
Materials such as composition silicate that composite bed 4 adopts and magnesium silicate are inorganic material, have high temperature resistant (maximum operation (service) temperature can reach 800 ℃), do not burn, advantage such as nontoxic dustless, corrosion-resistant, non-corrosiveness, but have the shortcoming of easy suction, poor adhesive force, thermal conductivity (at high temperature thermal conductivity is very little) bigger than normal at normal temperatures.The maximum operation (service) temperature of the modification PIR foamed plastics that thermal insulation layer 2 adopts has improved 50 ℃ than common PUR foam, can reach 180 ℃, has difficult suction, strong adhesion, low, the compressive strength advantages of higher of thermal conductivity.Employing has the thermal insulation pipe of lamination layer structure, and this two classes thermal insulating material is made up for each other's deficiencies and learn from each other, and complements each other, and obtains best heat insulation effect.
The mode that the making of composite bed 4 can be adopted and smear, spray is solidified by vapour seasoning in interior pipe 1.Thermal insulation layer 2 can adopt " one-process " of one side foaming one side moulding, also can adopt " two step method " of foaming in outer tube 3 to make.
The insulating tube that the utility model provides has the following advantages:
1. high temperature resistant, maximum operation (service) temperature can reach 200 ℃-350 ℃.
2. water proofing property is strong, and is corrosion-resistant.
3. manufacturing process is simple.
Claims (5)
1, a kind of thermal insulation pipe with lamination layer structure is made up of interior pipe (1), thermal insulation layer (2), outer tube (3), it is characterized in that, increases composite bed (4) between interior pipe (1) and thermal insulation layer (2).
2, thermal insulation pipe as claimed in claim 1 is characterized in that composite bed (4) adopts composite silicate thermal insulation material.
3, thermal insulation pipe as claimed in claim 1 is characterized in that composite bed (4) adopts magnesium silicate insulating material.
4, thermal insulation pipe as claimed in claim 1 is characterized in that, thermal insulation layer (2) adopts modified polyisocyanurate (modification PIR) foamed plastics.
5, thermal insulation pipe as claimed in claim 1 is characterized in that, scribbles one deck fire-resistant anticorrosion paint (5) between interior pipe (1) and composite bed (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94215778 CN2204909Y (en) | 1994-06-29 | 1994-06-29 | Heat isolating pipe with composite layer structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94215778 CN2204909Y (en) | 1994-06-29 | 1994-06-29 | Heat isolating pipe with composite layer structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2204909Y true CN2204909Y (en) | 1995-08-09 |
Family
ID=33831671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94215778 Expired - Fee Related CN2204909Y (en) | 1994-06-29 | 1994-06-29 | Heat isolating pipe with composite layer structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2204909Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105318144A (en) * | 2014-06-18 | 2016-02-10 | 天津鑫宇通防腐保温工程有限公司 | Prefabricated PIR copious cooling heat preservation pipe |
| CN111911716A (en) * | 2020-08-13 | 2020-11-10 | 江苏嘉德管道工程有限公司 | Cryogenic working condition prefabricated cold insulation pipe |
-
1994
- 1994-06-29 CN CN 94215778 patent/CN2204909Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105318144A (en) * | 2014-06-18 | 2016-02-10 | 天津鑫宇通防腐保温工程有限公司 | Prefabricated PIR copious cooling heat preservation pipe |
| CN111911716A (en) * | 2020-08-13 | 2020-11-10 | 江苏嘉德管道工程有限公司 | Cryogenic working condition prefabricated cold insulation pipe |
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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 |