CN105927803A - Installation method of waterproof-type electric-melting heat-preservation joint - Google Patents
Installation method of waterproof-type electric-melting heat-preservation joint Download PDFInfo
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- CN105927803A CN105927803A CN201610566619.8A CN201610566619A CN105927803A CN 105927803 A CN105927803 A CN 105927803A CN 201610566619 A CN201610566619 A CN 201610566619A CN 105927803 A CN105927803 A CN 105927803A
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- Prior art keywords
- electric heating
- oversleeve
- melting
- heating melting
- shell
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Classifications
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- 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
- F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
- F16L13/02—Welded joints
- F16L13/0245—Welded joints with holes in the sleeve or spigot being filled with weld
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- 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
- F16L59/14—Arrangements for the insulation of pipes or pipe systems
- F16L59/16—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like
- F16L59/18—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like adapted for joints
- F16L59/20—Arrangements specially adapted to local requirements at flanges, junctions, valves or the like adapted for joints for non-disconnectable joints
Abstract
The invention belongs to the field of heat preservation and relates to an installation method of a heat-preservation joint of a directly embedded high-temperature-hot-water pipe network used for heat-supply engineering, in particular to an installation method of a waterproof-type electric-melting heat-preservation joint. The method comprises following technical steps of: cleaning a working environment, installing an electric-melting sleevelet, welding gaps, foaming polyfoam, plugging a feeding port and sealing a seamless heat shrink sleeve. The installation method of the waterproof-type electric-melting heat-preservation joint has following beneficial effects: by utilizing the electric-melting sleevelet and the seamless heat shrink sleeve outside a pipeline, sealing and water-proof performance of the heat-preservation joint can be improved; through two-time heating and welding of the electric-melting sleevelet, especially transverse seam heating, engineering construction quality can be further improved, which is of great importance to improving construction quality of heat-preservation pipelines; the method is reliable in principle, easy and convenient in operation, mature in installation technology and is safe; and the waterproof-type electric-melting heat-preservation joint used in simple in structure, low in manufacture cost, user-friendly in application environment and broad in application scope.
Description
Technical field:
The invention belongs to heat supply heat preservation technology field, relate to a kind of for Heat Supply Engineering direct-buried high temperature hot water pipe net
The installation method of thermal insulation joint, particularly to a kind of water-proof type electric heating melting thermal insulation joint installation method, by setting
Put the electric heating melting oversleeve outside pipeline and two kinds of sealing shrouds of seamless thermal shrinkable sleeve ensure that the sealing of thermal insulation joint
Water resistance, adds thermal weld by twice of electric heating melting oversleeve and improves engineering construction quality further.
Background technology:
Since the eighties in 20th century China since introducing Northern Europe prefabricated direct-buried thermal insulation pipe, China's direct-burried heat supply
The construction technology of utilidor develops quickly, by foreign technology, add constantly the summing up of domestic industry,
Improving, thermal insulation joint technology also has relatively much progress；Mesh is universal along with high-temperature-hot-water directly buried pipeline technology, protects
The problem that temperature joint is caused also becomes increasingly conspicuous, by highest attention in the industry.Work as directly-buried thermal insulation pipes at present
When being laid in underground water compared with horn of plenty regional, if any one place of pipe-line system is from outside damaged, cause
Underground water enters pipeline heat-insulating system, and under high temperature, the vaporization of water can be accelerated the carbonization of polyurethane insulation coating and makes it lose
Effect, underground water can directly contact steel pipe, has more heat and outwards transmits and cause pipeline external surface rotten
Erosion, the high-temperature medium in pipeline will heat more underground water, form more steam, and more promptly
Extend to two ends, destroy more polyurethane insulation coating, form vicious circle, cause pipeline completely the most at last
Insulation failure, underground water corrosion working steel tube, brings huge economic loss to heating enterprise and can not be ignored
Potential safety hazard.In pipe-line system, utilidor is generally prefabrication, and quality is relatively easy to ensure；And
Joint insulation needs to make at the construction field (site), is affected by all many condition of practice of construction, the jail of thermal insulation joint
Gu degree prefabricated thermal insulation to be far below pipeline, become the short slab of heat supply ductwork.Therefore, design one is anti-
Ability of swimming electric heating melting thermal insulation joint installation method has good Social benefit and economic benefit.
Summary of the invention:
It is an object of the invention to the shortcoming overcoming prior art to exist, seek to design a kind of water-proof type electric heating melting
Thermal insulation joint installation method, by utilizing the electric heating melting oversleeve outside pipeline and seamless thermal shrinkable sleeve two kinds sealing
Set ensure that the sealing water resistance of thermal insulation joint, adds thermal weld by twice of electric heating melting oversleeve further
Ground improves engineering construction quality.
For achieving the above object, the mounting process of the water-proof type electric heating melting thermal insulation joint that the present invention relates to include with
Lower step:
(1), prune job environment: clean sandy soil and the foreign material of construction location, use electric grinding machine polishing
Steel pipe and steel pipe seam surface, remove the oil stain of steel tube surface, dust, floating rust and oxide layer；Cleaning PE
The width of shell more than the width 200-400mm of PE shell with electric heating melting oversleeve contact portion, then must use alcohol
Wiped clean；Dryer is used to carry out PE shell and electric heating melting oversleeve drying 5-20 minute；
(2), electric heating melting oversleeve is installed: electric heating melting oversleeve jacket formula be placed on the PE shell of interface,
Two clamping bands are arranged on electric heating melting oversleeve, by two clamping band centers and electric heating melting oversleeve during installation
The center of two vertical ferroalloy electrical heating silk screens keeps consistent, in order to the strength of clamping band concentrates on vertical iron
Alloy electrical heating silk screen, then and with binding clasp clamps；Electric heating cable is once added with outer by stretch out from sprue
Connect bonding machine electric wire to connect, start bonding machine and vertical ferroalloy electrical heating silk screen is vertically added thermal weld；
Adding thermal weld time control system and adding thermocurrent is 15-25A, and the heat time is 7-20 minute, and heating-up temperature is 90-120
Degree Celsius；Then, then the secondary of electric heating melting oversleeve both sides is added electric heating cable to be connected with bonding machine, to laterally
Ferroalloy electrical heating silk screen carries out Transverse Heated welding, and the thermocurrent that adds adding thermal weld is 11-20A, during heating
Between be 3-5 minute, heating-up temperature is 90-120 degree Celsius；Add thermal weld for twice and terminate rear normal temperature cooling 1-1.5
Hour；
(3) welding gap: check that step (2) adds after thermal weld completes between PE shell and electric heating melting oversleeve
Gap and slit surfaces is cleaned out；To mould with small-sized flame gun, extrusion welding gun or small-sized extruder again
It is tight that material weldering carries out welding along seam gap；
(4) foam plastic foaming: the polyurathamc of employing includes polyalcohol and two kinds of components of isocyanates,
By two kinds of components according to putting in blender mixing after, run through sprue and pour into foam chamber and react
Within 10-20 minute, realizing foaming, foaming formation polyurethane foam plastics is full of and seals whole foam chamber；
(5) closure charging aperture: the foam plastic produced after step (4) foams around cleaning charging aperture
Material, uses electric drill by charging aperture increasing radius to 15-25mm；Again by inside charging aperture and surrounding 10-20mm half
Polishing in circle region, footpath, the plug of heating taper plug-like structure and charging aperture, to molten condition, clamp plug
Press-in charging aperture stands 5-10 minute after firm welding；
(6) seamless thermal shrinkable sleeve seals: seamless thermal shrinkable sleeve is inserted on PE shell before steel-pipe welding, to seamless
The part that thermal shrinkable sleeve and electric heating melting oversleeve and insulation PE shell contact is polished, by electric heating melting oversleeve shell
After being heated to 60-80 DEG C with insulation PE shell polishing region warm fire seamless thermal shrinkable sleeve be pulled to electric heating melting oversleeve and
On PE shell, the width of seamless thermal shrinkable sleeve more than the width of electric heating melting oversleeve, the center line of seamless thermal shrinkable sleeve and
The center line of electric heating melting oversleeve and steel pipe seam are on same cross section, and seamless thermal shrinkable sleeve heat shrinkable seals；
Realize the installation of thermal insulation joint.
The agent structure of the water-proof type electric heating melting thermal insulation joint that the present invention relates to includes PE shell, steel pipe, steel pipe
Weld seam, electric heating melting oversleeve, sprue, once add electric heating cable, secondary adds electric heating cable, seamless thermal shrinkable sleeve, stifled
The weldering of head, polyurethane foam plastics, foam chamber, plastics, clamping band, PE overlapping the slot and binding clasp；Tubulose is tied
Being cased with steel pipe in the PE shell of structure, between adjacent steel pipe, weldering connects；The electric heating melting oversleeve of circulus is wrapped in
PE housing exterior, in order to seal electric heating melting oversleeve, the foam chamber formed between PE shell and steel pipe；Electric heating melting
Welded seal welds by plastics in the lap-joint of oversleeve and PE shell, forms PE overlapping the slot；On electric heating melting oversleeve
Have sprue, in order to polyurethane foam plastics injects foaming；Electric heating melting oversleeve two ends are respectively provided with once
Add electric heating cable and secondary adds electric heating cable, in order to successively switch on power heating electric heating melting oversleeve；Taper plug-like structure
Plug be fixedly welded in sprue after urethane foam plastic foaming terminates；Seamless thermal shrinkable sleeve is wrapped in
Electric heating melting oversleeve and PE housing exterior, the width of seamless thermal shrinkable sleeve is more than the width of electric heating melting oversleeve, seamless warm
The center line of contracting set and the center line of electric heating melting oversleeve are on same cross section with steel pipe seam, heat seamless
Thermal shrinkable sleeve is to seal and shrink electric heating melting oversleeve and PE shell；Clamping band is dismountable fixing by binding clasp
On electric heating melting oversleeve, in order to fix electric heating melting oversleeve during heating.
The structure of the electric heating melting oversleeve that the present invention relates to includes PE base material, vertical ferroalloy electrical heating silk screen, horizontal stroke
To ferroalloy electrical heating silk screen, sprue, once add electric heating cable, secondary adds electric heating cable, clamping band and clamping
Device；Inside PE base material, the left and right sides is fixedly installed vertical ferroalloy electrical heating silk screen, once adds electric heating cable one
End electrically connects with vertical ferroalloy electrical heating silk screen, once adds electric heating cable by being arranged on entering of PE base material top
Material mouth stretches out；A left side, PE base material bottom side is fixedly installed horizontal ferroalloy electrical heating silk screen, and secondary adds electric heating cable one
End electrically connects with horizontal ferroalloy electrical heating silk screen, and stretches out from horizontal ferroalloy electrical heating silk screen two ends.
The present invention compared with prior art, by utilizing electric heating melting oversleeve outside pipeline and seamless thermal shrinkable sleeve
Two kinds of sealing shrouds strengthen the sealing water resistance of thermal insulation joint, add thermal weld by twice of electric heating melting oversleeve,
The heating of the most secondary transverse joint improves engineering construction quality further, to improving utilidor construction matter
Measurer is of great importance, and its principle is reliable, easy and simple to handle, and its mounting process is ripe, safety, and it uses
The simple in construction of water-proof type electric heating melting thermal insulation joint, preparation cost is low, and applied environment is friendly, and range is wide.
Accompanying drawing illustrates:
Fig. 1 is the water-proof type electric heating melting thermal insulation joint structural principle schematic diagram that the present invention relates to.
Fig. 2 is the water-proof type electric heating melting thermal insulation joint mounting structure principle schematic that the present invention relates to.
Fig. 3 is the structural principle schematic diagram of the electric heating melting oversleeve that the present invention relates to.
Detailed description of the invention:
The invention will be further described below in conjunction with the accompanying drawings and by embodiment.
Embodiment 1:
The mounting process of the water-proof type electric heating melting thermal insulation joint that the present embodiment relates to comprises the following steps:
(1), prune job environment: clean sandy soil and the foreign material of construction location, use electric grinding machine polishing
Steel pipe 2 and steel pipe seam 3 surface, remove the oil stain on steel pipe 2 surface, dust, floating rust and oxide layer；Clearly
The width of reason PE shell 1 must be more than the width 200-400mm of PE shell 1 and electric heating melting oversleeve 4 contact portion,
Clean by alcohol wipe again；Use dryer that PE shell 1 and electric heating melting oversleeve 4 carry out dry 5-20 to divide
Clock；
(2), electric heating melting oversleeve is installed: electric heating melting oversleeve 4 jacket formula is placed on the PE shell 1 of interface
On, two clamping bands 13 are arranged on electric heating melting oversleeve 4, during installation by two clamping band 13 centers with
In electric heating melting oversleeve 4, the center of two vertical ferroalloy electrical heating silk screens 42 keeps consistent, in order to clamping band 13
Strength concentrate on vertical ferroalloy electrical heating silk screen 42, then and with binding clasp 15 clamp；Will be from sprue
5 electric heating cables 6 that once add stretched out connect with external bonding machine electric wire, start bonding machine and add vertical ferroalloy electricity
Heated filament net 42 vertically adds thermal weld；Adding thermal weld time control system and adding thermocurrent is 15-25A, and the heat time is
7-20 minute, heating-up temperature was 90-120 degree Celsius；Then, then by the secondary of electric heating melting oversleeve 4 both sides add
Electric heating cable 7 is connected with bonding machine, horizontal ferroalloy electrical heating silk screen 43 is carried out Transverse Heated welding, adds
The thermocurrent that adds of thermal weld is 11-20A, and the heat time is 3-5 minute, and heating-up temperature is 90-120 degree Celsius；
Add thermal weld for twice and terminate rear normal temperature cooling 1-1.5 hour；Twice heating welding parameter should refer to following table:
Table 1: water-proof type thermal insulation joint electric heating melting set construction table
Remarks: this numerical value is reference value, on-the-spot parameters can fluctuate 10%
(3) welding gap: check that step (2) adds PE shell 1 and electric heating melting oversleeve 4 after thermal weld completes
Between gap and slit surfaces is cleaned out；Again with small-sized flame gun, extrusion welding gun or small-sized extruder
Plastics weldering 12 is carried out welding along seam gap tight；
(4) foam plastic foaming: the polyurathamc of employing includes polyalcohol and two kinds of components of isocyanates,
By two kinds of components according to putting in blender mixing after, run through sprue 5 and pour into foam chamber and react
Within 10-20 minute, realizing foaming, foaming formation polyurethane foam plastics 10 is full of and seals whole foam chamber；
(5) closure charging aperture: the foam that cleaning charging aperture 5 surrounding produces after step (4) foams
Plastics, use electric drill by charging aperture increasing radius to 15-25mm；Again by inside charging aperture 5 and surrounding 10-20mm
Polish in radius circle region, the plug 9 of heating taper plug-like structure and charging aperture 5 to molten condition, folder
Firmly plug 9 is pressed in charging aperture 5 and stands 5-10 minute after firm welding；
(6) seamless thermal shrinkable sleeve seals: seamless thermal shrinkable sleeve 8 is inserted on PE shell, to seamless before steel pipe 2 welds
The part that thermal shrinkable sleeve 8 and electric heating melting oversleeve 4 and insulation PE shell 1 contact is polished, by electric heating melting oversleeve 4
Shell and insulation PE shell 1 polish region warm fire be heated to 60-80 DEG C after seamless thermal shrinkable sleeve 8 be pulled to electric heating melting
On oversleeve 4 and PE shell 1, the width of seamless thermal shrinkable sleeve 8 is more than the width of electric heating melting oversleeve 4, seamless thermal shrinkable sleeve 8
Center line and center line and the steel pipe seam 3 of electric heating melting oversleeve 4 be on same cross section, seamless thermal shrinkable sleeve 8
Heat shrinkable seals；Realize the installation of thermal insulation joint.
The thermal insulation joint warp of the mounting process installation of the water-proof type electric heating melting thermal insulation joint that the present embodiment relates to
Hermeticity experiment inspection qualification rate 100%, the test pressure of hermeticity experiment is 0.02MPa, pressurize 2-5 minute,
There is no pressure release and bubble produces, its concrete testing result such as table 2.
Table 2: thermal insulation joint quality testing
Above table 2 result illustrates that the present embodiment achieves the requirement of goal of the invention, has reached index of correlation.
The agent structure of the water-proof type electric heating melting thermal insulation joint that the present embodiment relates to include PE shell 1, steel pipe 2,
Steel pipe seam 3, electric heating melting oversleeve 4, sprue 5, once add electric heating cable 6, secondary adds electric heating cable 7, seamless
Thermal shrinkable sleeve 8, plug 9, polyurethane foam plastics 10, foam chamber 11, plastics weldering 12, clamping band 13, PE
Overlapping the slot 14 and binding clasp 15；Steel pipe 2 it is cased with, between adjacent steel pipe 2 in the PE shell 1 of tubular structure
Weldering connects；It is outside that the electric heating melting oversleeve 4 of circulus is wrapped in PE shell 1, in order to seals electric heating melting oversleeve
4, the foam chamber 11 formed between PE shell 1 and steel pipe 2；The overlap joint of electric heating melting oversleeve 4 and PE shell 1
12 welded seals weld by plastics in place, form PE overlapping the slot 14；Sprue 5 is had on electric heating melting oversleeve 4,
So that polyurethane foam plastics 10 injects foaming；Electric heating melting oversleeve 4 two ends are respectively provided with once heats cable
6 and secondary add electric heating cable 7, in order to successively switch on power heating electric heating melting oversleeve 4；Blocking up of taper plug-like structure
9 are fixedly welded in sprue 5 after polyurethane foam plastics 10 foaming terminates；Seamless thermal shrinkable sleeve 8 wraps
Being rolled in electric heating melting oversleeve 4 and PE shell 1 outside, the width of seamless thermal shrinkable sleeve 8 is more than electric heating melting oversleeve 4
Width, the center line of seamless thermal shrinkable sleeve 8 and the center line of electric heating melting oversleeve 4 are in same with steel pipe seam 3
On cross section, heat seamless thermal shrinkable sleeve 8 to seal and shrinking electric heating melting oversleeve 4 and PE shell 1；Clamping
Band 13 is detachably mounted on electric heating melting oversleeve 4 by binding clasp 15, in order to fix electric heating melting during heating
Oversleeve 4.
The structure of the electric heating melting oversleeve 4 that the present embodiment relates to includes PE base material 41, vertical ferroalloy electrical heating wire
Net 42, horizontal ferroalloy electrical heating silk screen 43, sprue 5, once add electric heating cable 6, secondary adds electric heating cable 7,
Clamping band 13 and binding clasp 15；Inside PE base material 41, the left and right sides is fixedly installed vertical ferroalloy electrical heating
Silk screen 42, once adds electric heating cable 6 one end and electrically connects with vertical ferroalloy electrical heating silk screen 42, once add thermoelectricity
Cable 6 stretches out by being arranged on the charging aperture 5 on PE base material 41 top；A left side, PE base material 41 bottom side is fixedly installed
Laterally ferroalloy electrical heating silk screen 43, secondary adds electric heating cable 7 one end and horizontal ferroalloy electrical heating silk screen 43 electricity
Connect, and stretch out from horizontal ferroalloy electrical heating silk screen 43 two ends.
When the electric heating melting oversleeve 4 that the present embodiment relates to is installed and used, it is enclosed on request interface, will
Two clamping bands 13 are arranged on electric heating melting oversleeve 4, by two clamping band 13 centers and electric heating melting during installation
In oversleeve 4, the center of two vertical ferroalloy electrical heating silk screens 42 keeps consistent, in order to the power of clamping band 13
Amount concentrates on vertical ferroalloy electrical heating silk screen 42, then and with binding clasp 15 clamps.
The seamless thermal shrinkable sleeve 8 that the present embodiment relates to uses radiant crosslinked polyethylene plastic material and structure.
Claims (3)
1. a water-proof type electric heating melting thermal insulation joint installation method, it is characterised in that its erector
Skill comprises the following steps:
(1), prune job environment: clean sandy soil and the foreign material of construction location, use electronic beating
Grinding machine polishing steel pipe and steel pipe seam surface, remove the oil stain of steel tube surface, dust, floating rust and
Oxide layer；The width of cleaning PE shell must be more than PE shell and electric heating melting oversleeve contact portion
Width 200-400mm, cleaner by alcohol wipe；Use dryer by PE shell and electricity
Hot melt oversleeve carries out drying 5-20 minute；
(2), electric heating melting oversleeve is installed: electric heating melting oversleeve jacket formula is placed on the PE of interface
On shell, two clamping bands are arranged on electric heating melting oversleeve, by two clamping bands during installation
The heart keeps consistent with the center of in electric heating melting oversleeve two vertical ferroalloy electrical heating silk screens, in order to
The strength of clamping band concentrates on vertical ferroalloy electrical heating silk screen, then and with binding clasp clamps；
The electric heating cable that once adds stretched out from sprue is connected with external bonding machine electric wire, starts bonding machine
Vertical ferroalloy electrical heating silk screen is vertically added thermal weld；Add thermal weld time control system and add thermoelectricity
Stream is 15-25A, and the heat time is 7-20 minute, and heating-up temperature is 90-120 degree Celsius；So
After, then the secondary of electric heating melting oversleeve both sides is added electric heating cable be connected with bonding machine, to horizontal iron
Alloy electrical heating silk screen carries out Transverse Heated welding, and the thermocurrent that adds adding thermal weld is 11-20A,
Heat time is 3-5 minute, and heating-up temperature is 90-120 degree Celsius；Add thermal weld twice to terminate
Rear normal temperature cools down 1-1.5 hour；
(3) welding gap: check that step (2) adds PE shell and electric heating after thermal weld completes
Melt the gap between oversleeve and slit surfaces is cleaned out；Again with small-sized flame gun, extrusion weldering
It is tight that plastics weldering is carried out welding along seam gap by rifle or small-sized extruder；
(4) foam plastic foaming: the polyurathamc of employing includes polyalcohol and isocyanates
Two kinds of components, by two kinds of components according to putting in blender mixing after, run through sprue and fill
Entering foam chamber and carry out reaction realization foaming in 10-20 minute, foaming forms polyurethane foam plastics and fills
Completely seal whole foam chamber；
(5) closure charging aperture: produce after step (4) foams around cleaning charging aperture
Foamed plastics, use electric drill by charging aperture increasing radius to 15-25mm；Again by charging aperture
Side and surrounding 10-20mm radius circle region polish, heating taper plug-like structure plug and
Charging aperture, to molten condition, is clamped and is stood 5-10 after firm welding in plug press-in charging aperture and divide
Clock；
(6) seamless thermal shrinkable sleeve seals: seamless thermal shrinkable sleeve is inserted on PE shell before steel-pipe welding,
Seamless thermal shrinkable sleeve and electric heating melting oversleeve are polished with the part that insulation PE shell contacts,
After electric heating melting oversleeve shell and insulation PE shell polishing region warm fire are heated to 60-80 DEG C
Seamless thermal shrinkable sleeve is pulled on electric heating melting oversleeve and PE shell, and the width of seamless thermal shrinkable sleeve is more than electricity
The width of hot melt oversleeve, the center line of seamless thermal shrinkable sleeve and the center line of electric heating melting oversleeve and steel pipe
Commissure is on same cross section, and seamless thermal shrinkable sleeve heat shrinkable seals；Realize thermal insulation joint
Install.
Water-proof type electric heating melting thermal insulation joint installation method the most according to claim 1, its
Be characterised by the agent structure of described water-proof type electric heating melting thermal insulation joint include PE shell, steel pipe,
Steel pipe seam, electric heating melting oversleeve, sprue, once add electric heating cable, secondary adds electric heating cable, nothing
Seam thermal shrinkable sleeve, plug, polyurethane foam plastics, foam chamber, plastics weldering, clamping band, PE take
Seam and binding clasp；Being cased with steel pipe in the PE shell of tubular structure, between adjacent steel pipe, weldering is even
Connect；The electric heating melting oversleeve of circulus is wrapped in PE housing exterior, in order to seal electric heating melting set
Sleeve, the foam chamber formed between PE shell and steel pipe；Electric heating melting oversleeve and the overlap joint of PE shell
Welded seal welds by plastics in place, forms PE overlapping the slot；Sprue is had on electric heating melting oversleeve,
So that polyurethane foam plastics injects foaming；Electric heating melting oversleeve two ends are respectively provided with once heats
Cable and secondary add electric heating cable, in order to successively switch on power heating electric heating melting oversleeve；Taper plug-like
The plug of structure is fixedly welded in sprue after urethane foam plastic foaming terminates；Seamless
Thermal shrinkable sleeve is wrapped in electric heating melting oversleeve and PE housing exterior, and the width of seamless thermal shrinkable sleeve is more than electricity
The width of hot melt oversleeve, the center line of seamless thermal shrinkable sleeve and the center line of electric heating melting oversleeve and steel pipe
Seamless thermal shrinkable sleeve, on same cross section, is heated to seal and shrinking electric heating melting oversleeve in commissure
With PE shell；Clamping band is detachably mounted on electric heating melting oversleeve by binding clasp, in order to
Electric heating melting oversleeve is fixed during heating.
Water-proof type electric heating melting thermal insulation joint installation method the most according to claim 1, its
It is characterised by that the structure of described electric heating melting oversleeve includes PE base material, vertical ferroalloy electrical heating wire
Net, horizontal ferroalloy electrical heating silk screen, sprue, once add electric heating cable, secondary adds electric heating cable,
Clamping band and binding clasp；Inside PE base material, the left and right sides is fixedly installed vertical ferroalloy electricity and adds
Heated filament net, once adds electric heating cable one end and electrically connects with vertical ferroalloy electrical heating silk screen, once add
Electric heating cable stretches out by being arranged on the charging aperture on PE base material top；A left side, PE base material bottom side is fixing to be set
Being equipped with horizontal ferroalloy electrical heating silk screen, secondary adds electric heating cable one end and horizontal ferroalloy electrical heating
Silk screen electrically connects, and stretches out from horizontal ferroalloy electrical heating silk screen two ends.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107504309A (en) * | 2017-08-17 | 2017-12-22 | 北京中科九章科技有限公司 | High sealing is seamless hot melt set and preparation method thereof and application method |
| CN107763356A (en) * | 2017-11-17 | 2018-03-06 | 北京豪特耐管道设备有限公司 | A kind of utilidor joint design and its construction method |
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| JPH06182872A (en) * | 1992-12-22 | 1994-07-05 | Nippon Steel Corp | Preventing method for partial corrosion of steel tube |
| CN101526158A (en) * | 2009-04-16 | 2009-09-09 | 黑龙江省科学院技术物理研究所 | Hot shrinkage/melt bush and manufacturing method and construction method thereof |
| CN202140730U (en) * | 2011-06-09 | 2012-02-08 | 广东联塑科技实业有限公司 | Electric hot melting pipe fitting |
| CN102767663A (en) * | 2012-07-20 | 2012-11-07 | 天津天地龙管业有限公司 | Electric melting type thermal insulation joint and installation method thereof |
| CN103363233A (en) * | 2013-06-29 | 2013-10-23 | 联塑科技发展(武汉)有限公司 | Plastic pipe connecting method |
| CN203979777U (en) * | 2014-08-08 | 2014-12-03 | 青岛泰能科技实业发展有限公司 | A kind of PE cover steel thermal pipe repaired mouth structure |
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| CN107504309A (en) * | 2017-08-17 | 2017-12-22 | 北京中科九章科技有限公司 | High sealing is seamless hot melt set and preparation method thereof and application method |
| CN107763356A (en) * | 2017-11-17 | 2018-03-06 | 北京豪特耐管道设备有限公司 | A kind of utilidor joint design and its construction method |
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Effective date of registration: 20211019 Address after: 266034 No. 29, Xingzhong Road, Sifang District, Qingdao, Shandong Patentee after: HUADIAN QINGDAO THERMAL Co.,Ltd. Patentee after: QINGDAO BONDELY HEAT ENGINEEING Ltd. Address before: 266034 No. 137, Fuzhou North Road, Shibei District, Qingdao, Shandong Patentee before: HUADIAN QINGDAO THERMAL Co.,Ltd. |