CN203560624U - Novel shrinkage-type heat-insulated pipeline joint - Google Patents
Novel shrinkage-type heat-insulated pipeline joint Download PDFInfo
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- CN203560624U CN203560624U CN201320695450.8U CN201320695450U CN203560624U CN 203560624 U CN203560624 U CN 203560624U CN 201320695450 U CN201320695450 U CN 201320695450U CN 203560624 U CN203560624 U CN 203560624U
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- Prior art keywords
- oversleeve
- heat insulation
- insulated piping
- insulation layer
- thermal shrinkage
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- 238000007789 sealing Methods 0.000 claims abstract description 41
- 238000009413 insulation Methods 0.000 claims description 66
- 230000004888 barrier function Effects 0.000 claims description 33
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 20
- 239000011496 polyurethane foam Substances 0.000 claims description 20
- 239000010409 thin film Substances 0.000 claims description 12
- 239000012634 fragment Substances 0.000 claims description 11
- 229920003020 cross-linked polyethylene Polymers 0.000 claims description 9
- 239000004703 cross-linked polyethylene Substances 0.000 claims description 9
- 238000010030 laminating Methods 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 8
- 229920003023 plastic Polymers 0.000 claims description 8
- 239000004033 plastic Substances 0.000 claims description 8
- 238000005187 foaming Methods 0.000 claims description 7
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 claims description 5
- 239000004964 aerogel Substances 0.000 claims description 5
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- 239000010408 film Substances 0.000 claims description 5
- 239000006260 foam Substances 0.000 claims description 5
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- 238000003032 molecular docking Methods 0.000 claims description 5
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 claims description 5
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 5
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 5
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 5
- -1 polyethylene terephthalate Polymers 0.000 claims description 4
- 239000005030 aluminium foil Substances 0.000 claims description 3
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- 239000011112 polyethylene naphthalate Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
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- 238000000576 coating method Methods 0.000 claims description 2
- 238000003475 lamination Methods 0.000 claims description 2
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Abstract
The utility model discloses a shrinkage-type heat-insulated pipeline joint. Sealing rubber strips are arranged in gaps formed by a heat-shrinkable sleeve and outer protecting pipes, a flexible bonding function and a waterproof function of the sealing rubber strips and a heat shrinkage function of the heat-shrinkable sleeve are combined, the airtightness between the outer protecting pipes and the heat-shrinkable sleeve is further improved, the heat-insulating performance of a heat-insulating layer is guaranteed, and the quality performance of the shrinkage-type heat-insulated pipeline joint is improved, so that the stability of the whole heat-insulated pipeline network is improved.
Description
Technical field
The utility model relates to a kind of Novel contracting formula insulated piping joint, belongs to the insulated piping joint technique field for medium transport
.
Background technique
In fields such as central heat supply, cooling and petroleum gases, the pipeline for medium transport is all needed to carry out insulation, to guarantee the heat-insulating property of pipeline in medium transport process.Insulated piping generally first need to be prefabricated in the factory by length, then carries out construction and installation to scene, in two insulated piping joints, forms joint, and in whole adiabatic pipe network, the quality of jiont treatment will be on producing larger impact the working life of whole pipe network.
The telescopic type insulated piping joint that prior art is carried out insulation formation to the joint without heat insulation layer mainly comprises following two kinds of forms:
1. thermal shrinkage belt oversleeve joint, it comprises heat insulation layer, HDPE oversleeve and pyrocondensation belt, described heat insulation layer is socketed on metal tube, described HDPE oversleeve is socketed on heat insulation layer, the two ends of described HDPE oversleeve are overlapped on respectively on the outer pillar of insulated piping end, described shrink belt is overlapped on the outer pillar of HDPE oversleeve and insulated piping simultaneously, thereby by described shrink belt, the outer pillar of described HDPE oversleeve and insulated piping is tightly connected.Yet the sealing of this kind of joint can be subject to the impact of shrink belt quality and site operation situation, when second-rate or site operation situation is poor at shrink belt, often cannot guarantee sealing and the reliability of telescopic type insulated piping joint.
2. electric heating melting formula joint, it comprises heat insulation layer and PE hot melt sleeve, described heat insulation layer is socketed on metal tube, described PE hot melt jacket casing is connected on heat insulation layer and its two ends are overlapped on respectively on the outer pillar of insulated piping, on described PE hot melt sleeve lining, be provided with electric heating wire, by heating electric heating wire, the joint of the outer pillar of described insulated piping and described PE hot melt sleeve is melt bonded together with.Yet, when the melt flow rate (MFR) difference of the material of or PE hot melt sleeve and outer pillar not good when construction quality is excessive, will cause producing gap between PE hot melt sleeve and outer pillar, reduce sealing between the two, and then reduce the heat-insulating property of telescopic type insulated piping joint.
In sum, the sealing of above-mentioned two kinds of telescopic type insulated piping joints of the prior art is all subject to the impact of the intrinsic defect of execution conditions and sealing configuration itself, in use often cannot guarantee sealing effect, the performance of heat insulation layer cannot be guaranteed, thereby has affected the heat-insulating property of insulated piping integral body.
Model utility content
For this reason, technical problem to be solved in the utility model is to overcome insulated piping joint of the prior art, and in use sealing is poor and cause the insulated piping heat-insulating property can not guaranteed problem, thereby provides a kind of good airproof performance, heat-insulating property is excellent and stay-in-grade telescopic type insulated piping joint.
For this reason, the utility model provides a kind of Novel contracting formula insulated piping joint, comprises the exposed working pipe in end being positioned on two sections of adjacent insulated pipings, and described working pipe connects at its uncoated end portion place; Heat insulation layer, is socketed in the described uncoated end portion of described working pipe; Also comprise the thermal shrinkage oversleeve being socketed on described heat insulation layer, the two ends of described thermal shrinkage oversleeve are overlapped on respectively the end of the outer pillar of two sections of adjacent insulated pipings, and form gap with described outer pillar respectively, in described gap, be provided with the sealing joint strip that described outer pillar and described heat-contraction sleeve are tightly connected.
Described thermal shrinkage oversleeve is crosslinked polyethylene oversleeve.
Described sealing joint strip is around being arranged on the outer wall of described outer pillar, and described sealing joint strip can be hot melt adhesive bar or horseshoe gum resin bar or hybrid type adhesive tape.
Described working pipe is coaxial welding metal tube together.
The inwall of described heat insulation layer and the laminating of the outer wall of described working pipe are fixing.
Described heat insulation layer is the composite adiabatic layer that lamination coating forms.
Described composite adiabatic layer comprises the polyurethane foam that the aerogel layer that the outer wall of the described working pipe of fitting arranges and the inwall of fitting described thermal shrinkage oversleeve arrange.
Described heat insulation layer is the polyurethane foam of on-the-spot mould foaming.
The polyurethane foam that described heat insulation layer forms for the foam hole perfusion foaming liquid by being opened on thermal shrinkage oversleeve.
Described heat insulation layer is prefabricated polyurethane foam tile fragment.
Described polyurethane foam tile fragment comprises around the first half rings of the outer wall sealing docking of described working pipe and the second half rings.
On the relative both sides of described the first half ring inwalls, correspondence arranges the first projection and the first groove; On the inwall of described the second half rings, corresponding described the first projection arranges the second groove, corresponding described the first groove arranges the second projection, and described second projection of described first groove of the second groove of described first projection of described the first half rings and described the second half rings, described the first half rings and described the second half rings is sealed and matched respectively.
The barrier layer that is provided for stoping gas in the described heat insulation layer of described thermal shrinkage oversleeve inside and/or the gas in external environment and moisture to see through described thermal shrinkage oversleeve between the outer wall of described heat insulation layer and the inwall of described thermal shrinkage oversleeve and circulates.
Plastic pellicle or aluminium foil that the outer wall that described barrier layer is the described heat insulation layer of laminating arranges.
Described plastic pellicle is the single thin film of a kind of formation in polyethylene terephthalate, PEN, polyethylene vinyl acetate copolymer or ethylene-vinyl alcohol copolymer or the single thin film that multiple mixing forms afterwards, or the laminated film being formed by a plurality of single thin film stacks.
The technical solution of the utility model has the following advantages compared to existing technology:
1. Novel contracting formula insulated piping joint of the present utility model, in the gap of described thermal shrinkage oversleeve and described outer pillar formation, sealing joint strip is set, by the flexible adhesion function of sealing joint strip and water-proof function and thermal shrinkage oversleeve heating radial contraction function are combined, further increased the sealing between outer pillar and thermal shrinkage oversleeve, improve the heat-insulating property of telescopic type insulated piping joint, thereby improved the heat-insulating property of whole insulated piping.
2. Novel contracting formula insulated piping joint of the present utility model is through the soil-stress test of standard EN 489, after guaranteeing to come and go 300 times, joint does not damage, and the adiabatic joint of prior art can only, under the testing conditions of standard EN 489, guarantee to come and go and not damage for 100 times.Illustrate that telescopic type insulated piping joint of the present utility model has good sealability.
3. Novel contracting formula insulated piping joint of the present utility model, described thermal shrinkage oversleeve is crosslinked polyethylene oversleeve, there is extremely excellent shrinkage and bond properties, even if sealing joint strip is because failure is not installed or installed to construction quality reason, also can carry out good sealing; Even if there is great melt flow rate (MFR) otherness between crosslinked polyethylene oversleeve and outer pillar, also can make crosslinked polyethylene oversleeve and intact being sealed of outer pillar, guarantee the integrality of joints structure form.
4. Novel contracting formula insulated piping joint of the present utility model, described sealing joint strip is around being arranged in the gap that described outer pillar and described thermal shrinkage oversleeve form.Described sealing joint strip and thermal shrinkage oversleeve and outer pillar are adhesively fixed respectively.。This kind is arranged so that sealing joint strip can arrange around described outer pillar 360 degree, guaranteed that outer pillar arranges on the whole excircle of sealing joint strip can form good sealability with thermal shrinkage oversleeve.
5. Novel contracting formula insulated piping joint of the present utility model, described composite adiabatic layer comprises the polyurethane foam that the inwall of aerogel layer that the outer wall of the described working pipe of fitting arranges and the described thermal shrinkage oversleeve of laminating arranges.Aerogel can bear the high temperature of 1000 ℃, is applicable to the thermal insulation that pipeline high temperature media is carried, and has extraordinary effect of heat insulation; Polyurethane foam is owing to containing many tiny foam holes, in foam hole, store in a large number again immobilising gas, as carbon dioxide, cyclopentane etc., these gases can not run off under the effect of barrier layer, make the thermal conductivity of heat insulation layer stable, this has guaranteed the insulation effect of heat insulation layer.
6. Novel contracting formula insulated piping joint of the present utility model, described heat insulation layer is prefabricated polyurethane foam tile fragment, described polyurethane foam tile fragment comprises around the first half rings of the outer wall sealing docking of described working pipe and the second half rings, adopts prefabricated polyurethane foam tile fragment can avoid ready-made foaming be subject to construction condition impact and cause the not good defect of heat insulation layer insulation effect as heat insulation layer.
7. Novel contracting formula insulated piping joint of the present utility model, on the relative both sides of described the first half ring inwalls, correspondence arranges the first projection and the first groove; On the inwall of described the second half rings, corresponding described the first projection arranges the second groove, corresponding described the first groove arranges the second projection, and described second projection of described first groove of the second groove of described first projection of described the first half rings and described the second half rings, described the first half rings and described the second half rings is sealed and matched respectively.By projection and the cooperation of groove, make together with described the first half rings are sealed and matched with described the second half rings, there is mounting type comparatively easily, and, on the relative both sides of each half ring, correspondence arranges groove and projection, when guaranteeing docking effect, can make the first half rings and the second half rings there is higher sealing effect, and be convenient to both dismounting.
8. telescopic type insulated piping joint of the present utility model is provided for stoping gas in the described heat insulation layer of described thermal shrinkage oversleeve inside and/or the gas in external environment and moisture to see through described thermal shrinkage oversleeve and the barrier layer that circulates between the outer wall of described heat insulation layer and the inwall of described thermal shrinkage oversleeve.In the using process of heat-insulated pipe joint, when the gas in external environment or the moisture tube wall by thermal shrinkage oversleeve is penetrated into barrier layer, being blocked layer stops, thereby make gas or moisture in external environment cannot continue to flow, barrier layer has intercepted flowing that gas in thermal shrinkage oversleeve external environment condition and moisture undertakies by its tube wall, and has reduced the impact of external environment on fed sheet of a media in the structures such as cover sleeve internal insulation or working pipe; In addition, when the gas existing in heat insulation layer is flowed by the impact of temperature, barrier layer plays the effect that intercepts gas permeation tube wall simultaneously, thereby has guaranteed the performance of heat insulation layer.In addition, because barrier layer is arranged between thermal shrinkage oversleeve and heat insulation layer, barrier layer is not contacted with external environment, the damage of having avoided external object to cause barrier layer, while having avoided the water of barrier layer directly and in external environment to contact and the reduction of the barrier property causing simultaneously, thereby guaranteed the life-span of barrier layer, guaranteed the life-span of cover sleeve, that is the life-span of having guaranteed heat-insulated pipe joint.
9. Novel contracting formula insulated piping joint of the present utility model, described plastic pellicle is the single thin film of a kind of formation in polyethylene terephthalate, PEN, polyethylene vinyl acetate copolymer or ethylene-vinyl alcohol copolymer or the single thin film that multiple mixing forms afterwards, or the laminated film being formed by a plurality of single thin film stacks.Because above-mentioned material is high barrier material, high barrier material has stronger gas and moisture barrier, prevent the problem that the insulation effect of heat insulation layer is reduced due to moisture and other infiltrations, for the insulated piping with a large amount of joints, be significant.
Accompanying drawing explanation
For content of the present utility model is more likely to be clearly understood, according to specific embodiment of the utility model also by reference to the accompanying drawings, the utility model is described in further detail, wherein below
Fig. 1 is embodiment 1 Novel contracting formula insulated piping joint schematic diagram;
Fig. 2 is the structural representation of the first half rings of polyurethane tile fragment of embodiment 2 Novel contracting formula insulated piping joint;
Fig. 3 is the structural representation of the second half rings of polyurethane foam tile fragment of embodiment 2 Novel contracting formula insulated piping joint;
In figure, reference character is expressed as: 1,2-insulated piping; 3,4-working pipe; 5-heat insulation layer; 51-the first half rings; 51a-the first projection; 51b-the first groove; 52-the second half rings; 52a-the second projection; 52b-the second groove; 6-outer protective layer; The outer pillar of 7,8-; 9,10-sealing joint strip.
Embodiment
For technical characteristics of the present utility model, object and effect being had more clearly, understand, now contrast accompanying drawing embodiment of the present utility model is described
.
embodiment 1
As shown in Figure 1, the utility model provides a kind of Novel contracting formula insulated piping joint, comprise and be positioned at adjacent insulated piping 1, 2 the exposed working pipe 3 in end, 4, described working pipe 3, 4 connect at its uncoated end portion place, described working pipe 3, on the outer wall at 4 uncoated end portion place, laminating is socketed with heat insulation layer 5, also comprise the thermal shrinkage oversleeve 6 being socketed on described heat insulation layer 5, the two ends of described thermal shrinkage oversleeve 6 are overlapped on respectively two sections of adjacent insulated pipings 1, 2 outer pillar 7, 8 end, the inwall of described thermal shrinkage oversleeve 6 ends and described outer pillar 7, between the outer wall of 8 ends, form gap, in described gap, be provided with and make described outer pillar 7, 8 sealing joint strips 9 that are tightly connected with described thermal shrinkage oversleeve 6, 10, described sealing joint strip 9, 10 with inwall and the described outer pillar 7 of described thermal shrinkage oversleeve 6 ends, the outer wall of 8 ends is fitted respectively fixing.
In the gap of the end of described thermal shrinkage oversleeve 6 and the formation of the end of described outer pillar 7,8, sealing joint strip 9,10 is set, by the heating radial contraction function of the water-proof function of sealing joint strip 9,10 flexible adhesions and thermal shrinkage oversleeve 6 is combined, increased the sealing between outer pillar 7,8 and thermal shrinkage oversleeve 6, guarantee the performance of the heat insulation layer of telescopic type insulated piping joint, thereby improved the stability of whole adiabatic pipe network.
In the present embodiment, described thermal shrinkage oversleeve 6 is crosslinked polyethylene oversleeve.Crosslinked polyethylene oversleeve has extremely excellent shrinkage and bond properties, even if sealing joint strip 9,10 is because failure is not installed or installed to construction quality reason, also can carry out good sealing; Even there is great melt flow rate (MFR) otherness between crosslinked polyethylene oversleeve 6 and outer pillar 7,8, also can make crosslinked polyethylene oversleeve and 7,8 intact being sealed of outer pillar, guarantee the integrality of joints structure form.
In the present embodiment, described sealer 9,10 is sealing joint strip, and described sealing joint strip is arranged in described holding space around the outer wall of described outer pillar 7,8.This kind is arranged so that sealing joint strip 9,10 can carry out 360 degree settings around described outer pillar 7,8, guaranteed all to have good sealability on the whole excircle that sealing joint strip 9,10 is set of outer pillar 7,8.Certainly, described sealing joint strip can be existing known hot melt adhesive tape or horseshoe gum resin bar or hybrid type adhesive tape.
In the present embodiment, described working pipe 3,4 is coaxial setting, and described working pipe 3 and working pipe 4 are coaxially arranged, and is convenient to guarantee the even thickness of heat insulation layer 5; In the present embodiment, the exposed end of described working pipe 3 and working pipe 4 is fixed together by welding manner, as the described working pipe 3 of a kind of distortion and working pipe 4, can also adopt other non-dismountable and dismountable mode to be fixed together.Described working pipe 3,4 is metal tube, is preferably steel pipe.
In the present embodiment, the laminating of the outer wall of the inwall of described heat insulation layer 5 and described working pipe 3,4 is fixing.Described heat insulation layer 5 comprises the aerogel layer of outer wall setting of the described working pipe 3,4 of fitting and the polyurethane foam that the inwall of the described thermal shrinkage oversleeve 6 of fitting arranges, and described heat insulation layer 5 adopts on-the-spot mould foaming to form.
As a kind of distortion of the present embodiment, the polyurethane foam that described heat insulation layer 5 forms for the foam hole perfusion foaming liquid by being opened on thermal shrinkage oversleeve 6.
The present embodiment provides a kind of Novel contracting formula insulated piping joint, and it is the distortion on embodiment 1 basis, and in the present embodiment, described heat insulation layer 5 is prefabricated polyurethane foam tile fragment.Described polyurethane foam tile fragment comprises around the first half rings 51 of the outer wall sealing docking of described working pipe 3,4 and the second half rings 52, sees Fig. 2 and Fig. 3.On the relative both sides of described the first half ring 51 inwalls, correspondence arranges the first protruding 51a and the first groove 51b; On the inwall of described the second half rings 52, corresponding described the first protruding 51a arranges the second groove 52b, corresponding described the first groove 51b arranges the second protruding 52a, and the described second protruding 52a of the described first groove 51b of the second groove 52b of the described first protruding 51a of described the first half rings 51 and described the second half rings 52, described the first half rings 51 and described the second half rings 52 is sealed and matched respectively.
The present embodiment provides a kind of Novel contracting formula insulated piping joint, it is the distortion on embodiment 1 or 2 bases, in the present embodiment, between the outer wall of described heat insulation layer 5 and the inwall of described thermal shrinkage oversleeve 6, be provided for stoping gas in the described heat insulation layer 5 of described thermal shrinkage oversleeve 6 inside and/or the gas in external environment and moisture to see through described thermal shrinkage oversleeve 6 and the barrier layer of circulation.
In the using process of heat-insulated pipe joint, when the gas in external environment or the moisture tube wall by thermal shrinkage oversleeve 6 is penetrated into barrier layer, being blocked layer stops, thereby make gas or moisture in external environment cannot continue to flow, barrier layer has intercepted flowing that gas in thermal shrinkage oversleeve 6 external environment conditions and moisture undertakies by its tube wall, and has reduced the impact of external environment on fed sheet of a media in the structures such as heat insulation layer 5 or working pipe; In addition, when the gas existing in heat insulation layer 5 is flowed by the impact of temperature, barrier layer plays the effect that intercepts gas permeation tube wall simultaneously, thereby has guaranteed the performance of heat insulation layer 5.In addition, because barrier layer is arranged between thermal shrinkage oversleeve 6 and heat insulation layer 5, barrier layer is not contacted with external environment, the damage of having avoided external object to cause barrier layer, while having avoided the water of barrier layer directly and in external environment to contact and the reduction of the barrier property causing simultaneously, thereby guaranteed the life-span of barrier layer, guaranteed the life-span of cover sleeve, that is the life-span of having guaranteed heat-insulated pipe joint.
In the present embodiment, the plastic pellicle that the outer wall that described barrier layer is the described heat insulation layer 5 of laminating arranges, described plastic pellicle is ethylene-vinyl alcohol copolymer film (EVOH).As a kind of distortion of the present embodiment, single thin film or above-mentioned material that described plastic pellicle can also mix rear formation for single thin film or the multiple above-mentioned material of a kind of formation in polyethylene terephthalate (PET), PEN (PEN), polyethylene vinyl acetate copolymer (EVA) form respectively the laminated film that is superimposed and forms after single thin film.Above-mentioned material is high barrier material, and high barrier material has good moisture and gas barrier property, prevents the increase of the heat insulation layer thermal conductivity that the infiltration of moisture and gas causes, has guaranteed that heat insulation layer has good insulation effect.
As a kind of distortion of the present embodiment, described barrier layer can also be aluminium foil.
Obviously, above-described embodiment is only for example is clearly described, not the restriction to mode of execution.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all mode of executions.And the apparent variation of being extended out thus or change are still among the protection domain in the invention.
Claims (15)
1. a Novel contracting formula insulated piping joint, comprises
Be positioned at the exposed working pipe (3,4) in end on adjacent two sections of insulated pipings (1,2), described working pipe (3,4) connects at its uncoated end portion place;
Heat insulation layer (5), is socketed in the described uncoated end portion of described working pipe (3,4);
It is characterized in that: also comprise the thermal shrinkage oversleeve (6) being socketed on described heat insulation layer (5), the two ends of described thermal shrinkage oversleeve (6) are overlapped on respectively two sections of adjacent insulated pipings (1,2) outer pillar (7,8) end, and form gap with described outer pillar (7,8) respectively, in described gap, be provided with the sealing joint strip (9,10) that described outer pillar (7,8) and described thermal shrinkage oversleeve (6) are tightly connected.
2. Novel contracting formula insulated piping joint according to claim 1, is characterized in that: described thermal shrinkage oversleeve is crosslinked polyethylene oversleeve.
3. Novel contracting formula insulated piping joint according to claim 1 and 2, is characterized in that: described sealing joint strip (9,10) is around being arranged on the outer wall of described outer pillar (7,8).
4. Novel contracting formula insulated piping joint according to claim 1 and 2, is characterized in that: described working pipe (3,4) is coaxial welding metal tube together.
5. Novel contracting formula insulated piping joint according to claim 1 and 2, is characterized in that: the outer wall laminating of the inwall of described heat insulation layer (5) and described working pipe (3,4) is fixing.
6. Novel contracting formula insulated piping joint according to claim 5, is characterized in that: the composite adiabatic layer that described heat insulation layer (5) forms for lamination coating.
7. Novel contracting formula insulated piping joint according to claim 6, it is characterized in that: described composite adiabatic layer comprises the polyurethane foam that the aerogel layer that the outer wall of the described working pipe of laminating (3,4) arranges and the inwall of fitting described thermal shrinkage oversleeve (6) arrange.
8. Novel contracting formula insulated piping joint according to claim 5, is characterized in that: the polyurethane foam that described heat insulation layer (5) forms for on-the-spot mould foaming.
9. Novel contracting formula insulated piping joint according to claim 5, is characterized in that: the polyurethane foam that described heat insulation layer (5) forms for the foam hole perfusion foaming liquid by being opened on thermal shrinkage oversleeve (6).
10. Novel contracting formula insulated piping joint according to claim 5, is characterized in that: described heat insulation layer (5) is prefabricated polyurethane foam tile fragment.
11. Novel contracting formula insulated piping joints according to claim 10, is characterized in that: described polyurethane foam tile fragment comprises around the first half rings (51) of the outer wall sealing docking of described working pipe (3,4) and the second half rings (52).
12. Novel contracting formula insulated piping joints according to claim 11, is characterized in that: on the relative both sides of described the first half ring (51) inwalls, correspondence arranges the first projection (51a) and the first groove (51b); On the inwall of described the second half rings (52), corresponding described the first projection (51a) arranges the second groove (52b), corresponding described the first groove (51b) arranges the second projection (52a), and described first groove (51b) of second groove (52b) of described first projection (51a) of described the first half rings (51) and described the second half rings (52), described the first half rings (51) is sealed and matched respectively with described second projection (52a) of described the second half rings (52).
13. according to the Novel contracting formula insulated piping joint described in any one in claim 12, it is characterized in that: between the outer wall of described heat insulation layer (5) and the inwall of described thermal shrinkage oversleeve (6), be provided for stoping gas in the inner described heat insulation layer (5) of described thermal shrinkage oversleeve (6) and/or the gas in external environment and moisture to see through described thermal shrinkage oversleeve (6) and the barrier layer of circulation.
14. telescopic type insulated piping joints according to claim 13, is characterized in that: plastic pellicle or aluminium foil that the outer wall that described barrier layer is the described heat insulation layer of laminating (5) arranges.
15. Novel contracting formula insulated piping joints according to claim 14, it is characterized in that: described plastic pellicle is the single thin film of a kind of formation in polyethylene terephthalate, PEN, polyethylene vinyl acetate copolymer or ethylene-vinyl alcohol copolymer or the single thin film that multiple mixing forms afterwards, or the laminated film being formed by a plurality of single thin film stacks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320695450.8U CN203560624U (en) | 2013-11-06 | 2013-11-06 | Novel shrinkage-type heat-insulated pipeline joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320695450.8U CN203560624U (en) | 2013-11-06 | 2013-11-06 | Novel shrinkage-type heat-insulated pipeline joint |
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| Publication Number | Publication Date |
|---|---|
| CN203560624U true CN203560624U (en) | 2014-04-23 |
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|---|---|---|---|
| CN201320695450.8U Expired - Lifetime CN203560624U (en) | 2013-11-06 | 2013-11-06 | Novel shrinkage-type heat-insulated pipeline joint |
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| Country | Link |
|---|---|
| CN (1) | CN203560624U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019302A (en) * | 2014-06-26 | 2014-09-03 | 王向林 | Heat insulation pipe joint structure |
| CN112049995A (en) * | 2020-09-03 | 2020-12-08 | 安徽恒振电力科技有限公司 | Double-composite steel-plastic composite pipe and manufacturing method thereof |
-
2013
- 2013-11-06 CN CN201320695450.8U patent/CN203560624U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019302A (en) * | 2014-06-26 | 2014-09-03 | 王向林 | Heat insulation pipe joint structure |
| CN112049995A (en) * | 2020-09-03 | 2020-12-08 | 安徽恒振电力科技有限公司 | Double-composite steel-plastic composite pipe and manufacturing method thereof |
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