CN1862070A - Self-compensation high-temp resistance prefabricated direct-buried heat insulation pipe - Google Patents
Self-compensation high-temp resistance prefabricated direct-buried heat insulation pipe Download PDFInfo
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- CN1862070A CN1862070A CN 200510200572 CN200510200572A CN1862070A CN 1862070 A CN1862070 A CN 1862070A CN 200510200572 CN200510200572 CN 200510200572 CN 200510200572 A CN200510200572 A CN 200510200572A CN 1862070 A CN1862070 A CN 1862070A
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- thermoinsulation material
- heat insulation
- thermoinsulation
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- thermal insulation
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Abstract
The invention comprises a core tube, an insulating layer and an outer protecting jacket. There is the insulating layer outside the core and the outer protecting jacket outside the insulating layer. There are more than one hard thermal insulation supporting rings between the core tube and the outer protecting jacket. Because of having the expansion self-compensating effect when used at high temp., the structure of the invention can't be destroyed, so as to make it have a good thermal insulation effect.
Description
One, technical field:
The present invention relates to the buried thermal insulation pipe of energy, is a kind of self-compensation high-temp resistance prefabricated direct-buried heat insulation pipe.
Two, background technique:
The buried thermal insulation pipe of existing energy generally has the thermal insulation pipe of following structure, that is: the thermal insulation pipe of the thermal insulation pipe of thermal insulation pipe, hard insulating material and the polyurethane foam composite structure of the thermal insulation pipe of hard heat-insulated tile fragment structure, rigid poly urethanes foaming thermal-insulating structure, steel bushing steel insulating structure, specific as follows:
1, the thermal insulation pipe of hard heat-insulated tile fragment structure.It adopts perlite tile fragment parcel medium steel pipe, with the perlite tile fragment as the insulation main body.Because the perlite tile fragment is a hard insulating material, thereby can be used for withstand voltage directly buried type insulation, this heat insulation system protects the mode that adopts waterproof roll or glass fibre reinforced plastics to twine outward.Because it adopts hard insulating material, when the medium steel pipe produces stress deformation owing to temperature variation, can't be out of shape, and makes it destructurized thereupon, thereby produce the heat leak phenomenon, cause outer protection to be decreased, thereby destroy whole heat insulation system; Simultaneously, the perlite tile fragment does not have water-proof function, and after external protection coating was damaged, stratum water and dew entered, and directly causes heat insulation layer to damage, maintenance maintenance difficulty, construction and engineering cost height.
2, the thermal insulation pipe of rigid poly urethanes foaming thermal-insulating structure.Its heat insulation layer is the high density polyethylene (HDPE) sleeve pipe, because of being organic material, thus be only applicable to the low-temperature heat medium thermal insulation below 150 ℃, and ageing-resistant performance is relatively poor.
3, the thermal insulation pipe of hard insulating material and polyurethane foam composite structure.It adopts the perlite tile fragment is the internal layer thermal insulating material, is outer thermal insulating material with polyurethane foam, does outer protection with PE or other material; Stop that with the perlite tile fragment high temperature to reach the temperature range that outer polyurethane can bear, carries out the low-temperature zone insulation with polyurethane heat insulation material, play withstand voltage and waterproof action with external protection coating; But because the insulation of hard perlite tile fragment is adopted in its internal layer insulation, perlite tile fragment internal layer contacts with the medium steel pipe, outer bond together with the polyurethane adiabatic layer thereby steel pipe is subjected in the medium temperatures involved and produce axial and radial deformation bigger, can cause internal layer and steel pipe surface of contact the slit to occur, outer formation with polyurethane bonding face ruptured, thereby the heat leak phenomenon can appear, the high temperature that leaks the heat place directly acts on polyurethane adiabatic layer and external protection coating, cause this two place to be decreased, directly destroy whole heat insulation system.Its basic reason is because this insulating structure does not have the result of " self-compensation high-temp resistance " effect.
4, the thermal insulation pipe of steel bushing steel insulating structure.Its by fed sheet of a media with steel pipe, protect steel pipe outward, graphite drag reduction layer is formed; It is placed on outer protecting tube on the insulation steel pipe, and space-number rice is placed graphite drag reduction layer between the steel pipe; To vacuumize between the steel pipe then, adopt the vacuum heat-preserving mode.But because the requirement for anticorrosion height, construction is difficulty, and overall cost is too expensive, thereby its application is not very extensive.
Three, summary of the invention:
The invention provides a kind of self-compensation high-temp resistance prefabricated direct-buried heat insulation pipe, overcome the deficiency of above-mentioned prior art, the problems such as infiltration, insulation failure of leaking that cause heat leak to be damaged occurring because of distortion have been solved, its radiation loss is lower, and be easy to production and processing, during construction, a large amount of civil engineerings and construction have been reduced.
Technological scheme of the present invention realizes by following measure: a kind of self-compensation high-temp resistance prefabricated direct-buried heat insulation pipe; it comprises core pipe, heat insulation layer and outside protective case; outside the core pipe, heat insulation layer is arranged; outside protective case is arranged outside heat insulation layer, the adiabatic bracing ring of the hard that is no less than is arranged between core pipe and outside protective case.
Be further optimization and/or improvements below to the invention described above technological scheme:
Above-mentioned outside protective case can adopt the outer pillar of planomural or outer pillar of ripple or the outer pillar of spiral.
The thermal insulation pipe that above-mentioned outside protective case can adopt thermal insulation pipe that thermal insulation pipe that thermal insulation pipe that rigid plastic of polyvinyl chloride makes or high density polyethylene (HDPE) rigid plastics make or glass fibre reinforced plastic material make or metallic material to make.
Above-mentioned heat insulation layer can adopt one or more in hard thermoinsulation material, semi-rigid thermoinsulation material, soft thermoinsulation material, elastic foam thermoinsulation material, porous inorganic insulating material, organic cellular insulant, inorganic organic compound porous thermoinsulation material, inorganic fibrous insulating material, organic fiber thermoinsulation material and the inorganic organic composite fiber thermoinsulation material.
Above-mentioned heat insulation layer can adopt one or more in foamed polyurethane insulating material, rubber and plastic foam-thermal insulation, polyethylene thermoinsulation material, expanded vermiculite thermoinsulation material, expansion pearlite thermal insulation material, ultralight pottery gravel thermoinsulation material, fibrous glass insulation material, aluminum silicate fiber thermoinsulation material, composition silicate foaming particle thermoinsulation material, multi cellular glass thermoinsulation material and the cenosphere thermoinsulation material.
The bracing ring that the adiabatic bracing ring of above-mentioned hard can adopt material with adiabatic heat insulating effect to make.
The adiabatic bracing ring of above-mentioned hard can adopt one or more bracing rings made in composition silicate foam-thermal insulation, multi cellular glass thermoinsulation material, foamed ceramics thermoinsulation material, coal fly ash hollow micro bead thermoinsulation material, hollow glass bead thermoinsulation material, glass fibre cotton thermoinsulation material, aluminosilicate fiber cotton thermoinsulation material, the cotton thermoinsulation material of coal ash fiber and the rock cellucotton thermoinsulation material.
Reasonable and compact in structure of the present invention, do not destroy its structure owing to have the self-compensating effect of expansion when it at high temperature uses, thereby make it have heat insulation effect preferably, and be easy to production and processing, and having resistance to compression waterproof preferably, mechanical and physical performance such as anticorrosion, its overall tightness is good, radiation loss is lower, good energy-conserving effect, ageing-resistant performance are better; During construction, reduced a large amount of civil engineerings and construction, thereby greatly reduced engineering cost, saved about about 25-30% than trench laying.
Four, description of drawings:
Accompanying drawing 1 is the main TV structure schematic representation of the embodiment of the invention 1,
Accompanying drawing 3 is the main TV structure schematic representation of the embodiment of the invention 2,
Accompanying drawing 5 is the main TV structure schematic representation of the embodiment of the invention 3,
Accompanying drawing 6 is the sectional structure schematic representation of accompanying drawing 5;
Coding in the accompanying drawing is respectively: 1 is the core pipe, and 2 is heat insulation layer, and 3 is outside protective case, and 4 is the adiabatic bracing ring of hard.
Five, embodiment:
The present invention is not subjected to following embodiment's restriction, can determine concrete mode of execution according to technological scheme of the present invention and actual conditions.
Below in conjunction with embodiment and accompanying drawing the present invention is further described:
At the foregoing description 1; in 2 and 3: according to actual needs; the thermal insulation pipe that outside protective case 3 can adopt thermal insulation pipe that thermal insulation pipe that thermal insulation pipe that rigid plastic of polyvinyl chloride of the prior art makes or high density polyethylene (HDPE) rigid plastics make or glass fibre reinforced plastic material make or metallic material to make; heat insulation layer 2 can adopt hard thermoinsulation material of the prior art; the semi-rigid thermoinsulation material; soft thermoinsulation material; the elastic foam thermoinsulation material; the porous inorganic insulating material; organic cellular insulant; inorganic organic compound porous thermoinsulation material; the inorganic fibrous insulating material; in organic fiber thermoinsulation material and the inorganic organic composite fiber thermoinsulation material one or more; heat insulation layer 2 can adopt foamed polyurethane insulating material of the prior art; the rubber and plastic foam-thermal insulation; the polyethylene thermoinsulation material; the expanded vermiculite thermoinsulation material; the expansion pearlite thermal insulation material; ultralight pottery gravel thermoinsulation material; the fibrous glass insulation material; the aluminum silicate fiber thermoinsulation material; composition silicate foaming particle thermoinsulation material; in multi cellular glass thermoinsulation material and the cenosphere thermoinsulation material one or more; the bracing ring that the adiabatic bracing ring of hard adopts the material with adiabatic heat insulating effect of prior art to make, the adiabatic bracing ring of hard adopts the composition silicate foam-thermal insulation of prior art; the multi cellular glass thermoinsulation material; the foamed ceramics thermoinsulation material; the coal fly ash hollow micro bead thermoinsulation material; the hollow glass bead thermoinsulation material; the glass fibre cotton thermoinsulation material; the aluminosilicate fiber cotton thermoinsulation material; one or more bracing rings of making in cotton thermoinsulation material of coal ash fiber and the rock cellucotton thermoinsulation material.Core pipe 1 can adopt seamless steel pipe of the prior art or welded steel pipe or Stainless Steel Tube or copper pipe or carbon steel tubing or seamless steel pipe or steel pipes with straight or Spiral Steel Pipe.
The foregoing description has stronger adaptability and preferable implementation result, but can increase and decrease non-essential technical characteristics according to actual needs, satisfies the demand of different situations.
" expansion self compensation structure " of the present invention solved following problem of the prior art: in use, because the core pipe produces axially because of thermal expansion and radial deformation causes heat insulating construction destroyed greatly, thereby causes problems such as insulation failure, fed sheet of a media steel pipe are corroded, damage.
The present invention makes unworkable operations such as the rust cleaning of original job site, antirust, anticorrosion, insulation finish in advance in factory, thereby has realized the simplification field operation, shortens construction period, the effect of energy efficiency.Because it can direct-burried, need not build pipe trench, overcast need be set, and does not take ground space, does not influence traffic above-ground, the comprehensive cost cost is low.
Of the present invention having the following advantages:
1, can be according to actual needs (as: temperature, mechanicalness, mechanical property, corrosion-resistant, acid and alkali-resistance, ageing-resistant etc.) select Use heat-insulating material, thereby make the present invention have broad Applicable temperature scope, good mechanical strength and mechanical property, splendid Stability (that is: corrosion-resistant, acid and alkali-resistance, ageing-resistant etc.).
3, heat-insulating property excellence is that is: about thermal conductivity factor 0.040W/ (km).
4, have preferably resistance to compression waterproof, the mechanical and physical performance such as anticorrosion, overall tightness is good, radiation loss is lower, energy-conservation Effective, ageing-resistant performance is better.
5, the work progress breakage less, the utilization rate height, be convenient to transportation, low price, long service life etc.
The present invention respectively has characteristics with the comparing of non-direct burial of prior art:
1, the present invention is because reducing a large amount of civil engineerings and construction, so total engineering output investment ratio trench laying is saved about about 25-30%.
2, non-direct burial generally be applicable to middle high-temperature heat insulation, but cost is higher.
The comparing result of the present invention and existing prefabricated direct-buried heat insulation pipe and other product is as follows:
| The kind sequence number | Index | The polyurethane prefabricated direct-buried thermal insulation pipe | The present invention | The heat insulation tile prefabricated direct-buried |
| 1 | The technology environmental protection | Chemical process | Physical process | |
| 2 | Make efficient | Higher | Higher | Lower |
| 3 | Serviceability temperature scope ℃ | -110～130 | -200～1200 | -200～400 |
| 4 | Compression strength MPa | 0.20 | 0.50 | 0.50 |
| 5 | Flammable | Flammable | Do not fire | Do not fire |
| 6 | Thermal conductivity W/mk | 0.030 | 0.040 | 0.08 |
| 7 | Resistance to ag(e)ing | Relatively poor | Good | Good |
| 8 | Application property | Well | Well | Well |
| 9 | The expansion self-compensating property | Do not possess | Well | Difference |
Claims (10)
1, a kind of self-compensation high-temp resistance prefabricated direct-buried heat insulation pipe; it is characterized in that comprising core pipe, heat insulation layer and outside protective case; outside the core pipe, heat insulation layer is arranged, outside protective case is arranged outside heat insulation layer, the adiabatic bracing ring of the hard that is no less than is arranged between core pipe and outside protective case.
2, self-compensation high-temp resistance prefabricated direct-buried heat insulation pipe according to claim 1 is characterized in that outside protective case adopts the outer pillar of planomural or outer pillar of ripple or the outer pillar of spiral.
3, self-compensation high-temp resistance prefabricated direct-buried heat insulation pipe according to claim 2 is characterized in that the thermal insulation pipe that outside protective case adopts thermal insulation pipe that thermal insulation pipe that thermal insulation pipe that rigid plastic of polyvinyl chloride makes or high density polyethylene (HDPE) rigid plastics make or glass fibre reinforced plastic material make or metallic material to make.
4,, it is characterized in that heat insulation layer adopts one or more in hard thermoinsulation material, semi-rigid thermoinsulation material, soft thermoinsulation material, elastic foam thermoinsulation material, porous inorganic insulating material, organic cellular insulant, inorganic organic compound porous thermoinsulation material, inorganic fibrous insulating material, organic fiber thermoinsulation material and the inorganic organic composite fiber thermoinsulation material according to claim 1 or 2 or 3 described self-compensation high-temp resistance prefabricated direct-buried heat insulation pipes.
5,, it is characterized in that heat insulation layer adopts one or more in foamed polyurethane insulating material, rubber and plastic foam-thermal insulation, polyethylene thermoinsulation material, expanded vermiculite thermoinsulation material, expansion pearlite thermal insulation material, ultralight pottery gravel thermoinsulation material, fibrous glass insulation material, aluminum silicate fiber thermoinsulation material, composition silicate foaming particle thermoinsulation material, multi cellular glass thermoinsulation material and the cenosphere thermoinsulation material according to claim 1 or 2 or 3 described self-compensation high-temp resistance prefabricated direct-buried heat insulation pipes.
6, self-compensation high-temp resistance prefabricated direct-buried heat insulation pipe according to claim 4 is characterized in that heat insulation layer adopts one or more in foamed polyurethane insulating material, rubber and plastic foam-thermal insulation, polyethylene thermoinsulation material, expanded vermiculite thermoinsulation material, expansion pearlite thermal insulation material, ultralight pottery gravel thermoinsulation material, fibrous glass insulation material, aluminum silicate fiber thermoinsulation material, composition silicate foaming particle thermoinsulation material, multi cellular glass thermoinsulation material and the cenosphere thermoinsulation material.
7,, it is characterized in that the bracing ring that the adiabatic bracing ring of hard adopts material with adiabatic heat insulating effect to make according to claim 1 or 2 or 3 described self-compensation high-temp resistance prefabricated direct-buried heat insulation pipes.
8, self-compensation high-temp resistance prefabricated direct-buried heat insulation pipe according to claim 4 is characterized in that the bracing ring that the adiabatic bracing ring of hard adopts material with adiabatic heat insulating effect to make.
9, self-compensation high-temp resistance prefabricated direct-buried heat insulation pipe according to claim 6 is characterized in that the bracing ring that the adiabatic bracing ring of hard adopts material with adiabatic heat insulating effect to make.
10, self-compensation high-temp resistance prefabricated direct-buried heat insulation pipe according to claim 9 is characterized in that the adiabatic bracing ring of hard adopts one or more bracing rings made in composition silicate foam-thermal insulation, multi cellular glass thermoinsulation material, foamed ceramics thermoinsulation material, coal fly ash hollow micro bead thermoinsulation material, hollow glass bead thermoinsulation material, glass fibre cotton thermoinsulation material, aluminosilicate fiber cotton thermoinsulation material, the cotton thermoinsulation material of coal ash fiber and the rock cellucotton thermoinsulation material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510200572 CN1862070A (en) | 2005-09-29 | 2005-09-29 | Self-compensation high-temp resistance prefabricated direct-buried heat insulation pipe |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200510200572 CN1862070A (en) | 2005-09-29 | 2005-09-29 | Self-compensation high-temp resistance prefabricated direct-buried heat insulation pipe |
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| CN1862070A true CN1862070A (en) | 2006-11-15 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104364077A (en) * | 2012-06-07 | 2015-02-18 | 陶氏环球技术有限责任公司 | Polymeric foam insulation system for pipes |
| US20150111001A1 (en) * | 2012-06-07 | 2015-04-23 | Dow Global Technologies Llc | Foam wall insulation system |
| CN104930270A (en) * | 2015-07-06 | 2015-09-23 | 长春燃气热力设计研究院有限责任公司 | Prefabricated pipe fitting for fuel gas and manufacturing method of prefabricated pipe fitting |
| CN105276337A (en) * | 2015-12-08 | 2016-01-27 | 朗格斯特哈尔滨环保节能产品制造有限公司 | Rigid polyurethane plastic foam insulation pipe and machining method |
| CN105299389A (en) * | 2015-12-08 | 2016-02-03 | 朗格斯特哈尔滨环保节能产品制造有限公司 | Thermal insulation pipe with corrugated outer protective pipe and manufacturing method for thermal insulation pipe |
| CN109799163A (en) * | 2017-11-16 | 2019-05-24 | 朗阁仪器(北京)股份有限公司 | A kind of refrigerating plant for physical adsorption appearance and the physical adsorption appearance without using refrigerant |
| CN111981211A (en) * | 2020-08-11 | 2020-11-24 | 山东新朗华科技有限公司 | Heat distribution pipeline |
| CN112175263A (en) * | 2020-09-22 | 2021-01-05 | 苏州市桔园管业有限公司 | High-toughness flame-retardant heat-insulation pipe |
| CN112431966A (en) * | 2020-12-18 | 2021-03-02 | 新疆零碳节能科技有限公司 | Soft and hard combined prefabricated steam overhead thermal insulation pipe |
-
2005
- 2005-09-29 CN CN 200510200572 patent/CN1862070A/en active Pending
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9617729B2 (en) * | 2012-06-07 | 2017-04-11 | Dow Global Technologies Llc | Foam wall insulation system |
| US20150111001A1 (en) * | 2012-06-07 | 2015-04-23 | Dow Global Technologies Llc | Foam wall insulation system |
| US9897245B2 (en) | 2012-06-07 | 2018-02-20 | Dow Global Technologies Llc | Polymeric foam insulation system for pipes |
| CN104364077A (en) * | 2012-06-07 | 2015-02-18 | 陶氏环球技术有限责任公司 | Polymeric foam insulation system for pipes |
| CN104364077B (en) * | 2012-06-07 | 2017-03-15 | 陶氏环球技术有限责任公司 | The polymeric foam insulation system of pipe |
| CN104930270A (en) * | 2015-07-06 | 2015-09-23 | 长春燃气热力设计研究院有限责任公司 | Prefabricated pipe fitting for fuel gas and manufacturing method of prefabricated pipe fitting |
| CN104930270B (en) * | 2015-07-06 | 2016-05-25 | 长春燃气热力设计研究院有限责任公司 | A kind of prefabricated pipe fitting and preparation method thereof for combustion gas |
| CN105299389A (en) * | 2015-12-08 | 2016-02-03 | 朗格斯特哈尔滨环保节能产品制造有限公司 | Thermal insulation pipe with corrugated outer protective pipe and manufacturing method for thermal insulation pipe |
| CN105276337A (en) * | 2015-12-08 | 2016-01-27 | 朗格斯特哈尔滨环保节能产品制造有限公司 | Rigid polyurethane plastic foam insulation pipe and machining method |
| CN105299389B (en) * | 2015-12-08 | 2018-05-29 | 朗格斯特哈尔滨环保节能产品制造有限公司 | Insulating tube and production method with ripple outer protection tube |
| CN105276337B (en) * | 2015-12-08 | 2019-02-22 | 朗格斯特哈尔滨环保节能产品制造有限公司 | Hard polyaminoester plastic foam insulating tube and processing method |
| CN109799163A (en) * | 2017-11-16 | 2019-05-24 | 朗阁仪器(北京)股份有限公司 | A kind of refrigerating plant for physical adsorption appearance and the physical adsorption appearance without using refrigerant |
| CN109799163B (en) * | 2017-11-16 | 2023-05-05 | 朗阁仪器(北京)有限公司 | Refrigerating device for physical adsorption instrument and physical adsorption instrument without using refrigerant |
| CN111981211A (en) * | 2020-08-11 | 2020-11-24 | 山东新朗华科技有限公司 | Heat distribution pipeline |
| CN111981211B (en) * | 2020-08-11 | 2022-02-25 | 山东新朗华科技有限公司 | Heat distribution pipeline |
| CN112175263A (en) * | 2020-09-22 | 2021-01-05 | 苏州市桔园管业有限公司 | High-toughness flame-retardant heat-insulation pipe |
| CN112431966A (en) * | 2020-12-18 | 2021-03-02 | 新疆零碳节能科技有限公司 | Soft and hard combined prefabricated steam overhead thermal insulation pipe |
| CN112431966B (en) * | 2020-12-18 | 2022-02-08 | 新疆零碳节能科技有限公司 | Soft and hard combined prefabricated steam overhead thermal insulation pipe |
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