CN106870860A - A kind of new prefabricated direct-buried heat insulation elbow - Google Patents
A kind of new prefabricated direct-buried heat insulation elbow Download PDFInfo
- Publication number
- CN106870860A CN106870860A CN201510944963.1A CN201510944963A CN106870860A CN 106870860 A CN106870860 A CN 106870860A CN 201510944963 A CN201510944963 A CN 201510944963A CN 106870860 A CN106870860 A CN 106870860A
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- Prior art keywords
- elbow
- plastics
- arc
- pieces
- weld
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L43/00—Bends; Siphons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
- F16L59/021—Shape or form of insulating materials, with or without coverings integral with the insulating materials comprising a single piece or sleeve, e.g. split sleeve, two half sleeves
- F16L59/025—Shape or form of insulating materials, with or without coverings integral with the insulating materials comprising a single piece or sleeve, e.g. split sleeve, two half sleeves with more then two segments
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Insulation (AREA)
Abstract
A kind of new prefabricated direct-buried heat insulation elbow, is constituted by protecting elbow, polyurethane foam insulation layer, support block, steel elbow outside double slit hot melt reinforced plastics, it is characterised in that:Elbow is protected outside the double slit hot melt reinforced plastics, it is to be heated and formed with two pieces of plastics arcs hot-forming in advance and two electric heating melting plates, two electric heating melting plates are ridden press against and two pieces of closing up for plastics arc locate and mutually fuse to form two reinforcements of weld, when two pieces of plastics arc plate shapes are identical, its two reinforcements of weld are respectively positioned at the outer arc surface of elbow and inner arcuate surface, when two pieces of plastics arc plate shapes are different, its two reinforcements of weld are symmetrically positioned in the split of elbow:The electric heating melting plate is material identical with plastics arc material, and width is more than 40mm, and thickness is more than 0.5 times of arc plate thickness, and one side inlays the plastic slat of heating wire net.Advantages of the present invention:Aesthetic in appearance, insulation layer thickness is uniform, and weld seam is few, and production efficiency is high, and plastics arc and electric heating melting plate are produced in batches by specialized factory, dimensionally stable, reliable in quality.
Description
First, technical field:
The invention belongs to prefabricated direct-buried thermal insulation pipe road technical field, be it is a kind of with《High-density polyethylene external protective pipe polyurethane foam is moulded
Material prefabricated direct-buried thermal insulation pipe》The heat insulation elbow for matching.
2nd, background technology:
According to GB/T29047-2012《High-density polyethylene external protective pipe RPUF prefabricated direct-buried thermal insulation pipe and
Pipe fitting》Standard production《Heat insulation elbow》, elbow is protected outside the vinyon used by it to be welded into vinyl tube
Dried shrimp waist type elbow, is made of welding dried shrimp waist type elbow《Heat insulation elbow》, there is that welding processing amount is big, production efficiency
The low, shortcoming that insulation layer thickness deviation is big.
ZL200920268946 is disclosed《A kind of welded elbow of butt-jointed seam reinforced polyvinyl plastic pipe》, the patented technology
The easily cracking defect of knee bend weld seam is solved well, but in practice, it has been found that technology presence is manufactured into
This height, welding job amount is big, and vinyon enhancement layer is fitted not tight problem, and patented technology use with elbow mother metal
Can not solve the problems, such as that froth bed deviation is big in polyurethane foam insulation elbow.
ZL201020002477 is disclosed《A kind of polyurethane foam heat insulation bent pipe with outer polyethylene protective pipe》, the patented technology is fine
Solve the problems, such as that froth bed deviation is big, but elbow outer protection tube difficult to realize for bending radius less than 3D does not have weld seam,
And steel elbow cannot be formed directly into plastics outer protection tube.
3rd, the content of the invention:
For the deficiency of welding dried shrimp waist plastic elbow, meanwhile, also directed to《Heat insulation elbow》Steel elbow diameter used and curved
The features such as head bending radius excursion is big, steel elbow can carry straight length, the present invention provides a kind of new prefabricated direct-buried insulation
Elbow, it is to protect elbow outside double slit hot melt reinforced plastics that elbow is protected outside the plastics used by the heat insulation elbow, according to the bending of elbow
Radius is different, and its two reinforcements of weld positioned at the outer arc surface of elbow and inner arcuate surface or can be symmetrically positioned in elbow respectively
Facet;Heat insulation elbow for steel elbow with straight length and flow development length more than 30cm, can take first on steel elbow
Binding support block, then two pieces of plastics arcs are wrapped up into steel elbow welding moulding process, and for steel elbow without straight length or
Heat insulation elbow of the straight length less than 20cm, can again penetrate steel elbow using elbow is protected outside first shaping double slit hot melt reinforced plastics
Production technology.
New prefabricated direct-buried heat insulation elbow of the present invention, by protecting elbow, polyurethane foam insulation outside double slit hot melt reinforced plastics
Layer, support block, steel elbow are constituted, it is characterised in that:The prefabricated direct-buried heat insulation elbow, outside its double slit hot melt reinforced plastics
Shield elbow is formed by two pieces of plastics arcs hot-forming in advance and two electric heating melting plate melting welding, two electric heating melting plate difference
Ride press against and two pieces of closing up for plastics arc locate and mutually fuse to form two reinforcements of weld, when two pieces of plastics arc plate shape phases
With and when being arranged symmetrically, its two strip hot melts reinforcement of weld is respectively positioned at the outer arc surface of elbow and inner arcuate surface;When two pieces of modelings
When material arc plate shape is different, its two strip hot melts reinforcement of weld is symmetrically positioned in the split of elbow, and steel elbow adds in double slit hot melt
Protected in elbow chamber outside strong plastics, the exposed 10~25cm in two ends, set in the annular gap that steel elbow is formed with shield elbow outside plastics
There are support block and polyurethane foam insulation layer.
Described riding press against the electric heating melting plate that two pieces of plastics arcs close up place and mutually fuse, its material and plastics arc phase
Same, width studs with the plastic slat of heating wire net more than 30mm, thickness more than 0.5 times of arc plate thickness, one side.
4th, illustrate:
It is described further with implementation method below in conjunction with the accompanying drawings.
Specification digest accompanying drawing 1 is the new prefabricated direct-buried heat insulation elbow schematic cross-section, its two reinforcement of weld difference positions
In the extrados and intrados of elbow, the structure type is suitable for heat insulation elbow of the bending radius less than 3D.
Figure of description 1 is the new prefabricated direct-buried heat insulation elbow schematic cross-section, and its two reinforcements of weld are symmetrically positioned in curved
The split of head, the structure type is suitable for heat insulation elbow of the bending radius more than 3D.
Figure of description 2 is electric heating melting plate schematic cross-section.
Figure of description 3 is the reinforcement of weld sectional view that plastics arc and electric heating melting plate mutually fuse formation.
In figure:1 is steel elbow;2 is to constitute the plastics arc that elbow is protected outside double slit hot melt reinforced plastics;3 is polyurethane
Foam heat-insulation layer;4 is support block;5 is the reinforcement of weld that plastics arc and electric heating melting plate mutually fuse formation;6 is electricity
Hot-melt plate plastic slat;7 is the heating wire net for being embedded in plastic slat surface.
5th, specific embodiment:
Implement main material needed for the present invention:Plastics arc, electric heating melting plate, steel elbow, support block, polyurethane material etc..
Required equipment has:Polyurethane foaming machine, electrothermal fusion welding machine, crane tool etc..
For the heat insulation elbow that steel elbow is more than 20cm with straight length and flow development length, embodiments thereof is:(1) steel
Elbow eliminates rust and bundlees support block, and the thickness of support block used is slightly less than heat-insulation layer theoretic throat;(2) by two pieces of plastics arcs
Plate wraps up steel elbow, and 10~25cm is exposed at steel elbow two ends;(3) at least with three cards being adapted with plastic elbow specification
Ring or device of tying tight close up two pieces of plastics arcs;(4) ride and press against two pieces of plastics arc places of closing up and lay electric heating melting plate;(5)
Electrified regulation, makes two electric heating melting plate plastic slats fuse to be formed protect curved outside double slit hot melt reinforced plastics with two pieces of plastics arcs
Head;(6) treat that weld seam cools down backward steel elbow with injection polyurethane in shield elbow interlayer outside double slit hot melt reinforced plastics;(8) treat
Take snap ring trimming outward appearance and size after polyurethane foam solidification apart.
Heat insulation elbow for steel elbow without straight length or flow development length less than 20cm, can use implementation below:
(1) first it is made on corresponding moulds of industrial equipment " protecting elbow outside double slit hot melt reinforced plastics ";(2) steel elbow eliminates rust and only exists
Elbow middle part bundlees support block, and the thickness of support block is less than heat-insulation layer theoretic throat;(3) steel elbow is inserted in molded
" double slit hot melt reinforced plastics outside protect elbow ", 10~25cm of arc port is exposed at steel elbow two ends;(4) pressed from both sides at two ends
Support block centering is filled in layer;(5) pressed from both sides in interlayer to shield elbow outside steel elbow and double slit hot melt reinforced plastics and inject polyurethane;
(6) after trimming outward appearance and size after foam curing.
6th, beneficial effect of the present invention:
New prefabricated direct-buried heat insulation elbow of the present invention, strengthens due to dried shrimp waist type welding plastic elbow is changed into double slit hot melt
Elbow is protected outside plastics, aesthetic in appearance, insulation layer thickness is uniform, required plastics arc and electric heating melting plate by specialized factory in batches
Production, production efficiency is high, dimensionally stable, reliable in quality.
Claims (2)
1. a kind of new prefabricated direct-buried heat insulation elbow, by protected outside double slit hot melt reinforced plastics elbow, polyurethane foam insulation layer,
Support block, steel elbow are constituted, it is characterised in that:The prefabricated direct-buried heat insulation elbow, protects curved outside its double slit hot melt reinforced plastics
Head is formed by two pieces of plastics arcs hot-forming in advance and two electric heating melting plate melting welding, and two electric heating melting plates ride pressure respectively
Two pieces of closing up for plastics arc to locate and mutually fuse to form two reinforcements of weld, when two pieces of plastics arc plate shapes are identical simultaneously
And when being arranged symmetrically, its two strip hot melts reinforcement of weld is respectively positioned at the outer arc surface of elbow and inner arcuate surface;When two pieces of plastics arcs
When shape plate shape is different, its two strip hot melts reinforcement of weld is symmetrically positioned in the split of elbow, and steel elbow strengthens modeling in double slit hot melt
In the outer shield elbow chamber of material, the exposed 10~25cm in two ends is provided with branch in the annular gap that steel elbow is formed with shield elbow outside plastics
Bracer and polyurethane foam insulation layer.
2. new prefabricated direct-buried heat insulation elbow according to claim 1, it is characterised in that:Described riding press against two blocks of plastics
Arc closes up place and the electric heating melting plate for mutually fusing, and its material is identical with plastics arc, width is more than 30mm, thickness
Heating wire net is studded with more than 0.5 times of arc plate thickness, one side.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201510944963.1A CN106870860A (en) | 2015-12-11 | 2015-12-11 | A kind of new prefabricated direct-buried heat insulation elbow |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201510944963.1A CN106870860A (en) | 2015-12-11 | 2015-12-11 | A kind of new prefabricated direct-buried heat insulation elbow |
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CN106870860A true CN106870860A (en) | 2017-06-20 |
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CN201510944963.1A Pending CN106870860A (en) | 2015-12-11 | 2015-12-11 | A kind of new prefabricated direct-buried heat insulation elbow |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111336326A (en) * | 2020-03-09 | 2020-06-26 | 天津市中通管道保温有限公司 | Flame-retardant type heat-insulation pipe with hollow interlayer |
CN113883352A (en) * | 2018-08-23 | 2022-01-04 | 山西理工红日节能服务有限公司 | Prefabricated heat preservation double-deck return bend |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000304191A (en) * | 1999-04-21 | 2000-11-02 | Adeia Kk | Heat reserving material for bent pipe coupling |
CN1464217A (en) * | 2002-06-12 | 2003-12-31 | 高文兴 | Process for manufacturing steel sheet made butt-welded single seam pulling bend |
US7360799B1 (en) * | 2004-08-17 | 2008-04-22 | Price Todd C | Insulation cladding for bends |
CN201982896U (en) * | 2011-04-13 | 2011-09-21 | 河北洪浩管道制造有限公司 | Heat-preserving bent pipe |
CN204852742U (en) * | 2015-09-23 | 2015-12-09 | 齐克先 | Double slit hot melt board reinforced weld plastics elbow |
-
2015
- 2015-12-11 CN CN201510944963.1A patent/CN106870860A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000304191A (en) * | 1999-04-21 | 2000-11-02 | Adeia Kk | Heat reserving material for bent pipe coupling |
CN1464217A (en) * | 2002-06-12 | 2003-12-31 | 高文兴 | Process for manufacturing steel sheet made butt-welded single seam pulling bend |
US7360799B1 (en) * | 2004-08-17 | 2008-04-22 | Price Todd C | Insulation cladding for bends |
CN201982896U (en) * | 2011-04-13 | 2011-09-21 | 河北洪浩管道制造有限公司 | Heat-preserving bent pipe |
CN204852742U (en) * | 2015-09-23 | 2015-12-09 | 齐克先 | Double slit hot melt board reinforced weld plastics elbow |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113883352A (en) * | 2018-08-23 | 2022-01-04 | 山西理工红日节能服务有限公司 | Prefabricated heat preservation double-deck return bend |
CN113883352B (en) * | 2018-08-23 | 2023-11-21 | 山西理工红日节能服务有限公司 | Prefabricated heat-insulating double-layer bent pipe |
CN111336326A (en) * | 2020-03-09 | 2020-06-26 | 天津市中通管道保温有限公司 | Flame-retardant type heat-insulation pipe with hollow interlayer |
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Application publication date: 20170620 |