CN108930844A - A kind of steel modeling slip casting multiple tube for fluid heating snow melt - Google Patents
A kind of steel modeling slip casting multiple tube for fluid heating snow melt Download PDFInfo
- Publication number
- CN108930844A CN108930844A CN201810938784.0A CN201810938784A CN108930844A CN 108930844 A CN108930844 A CN 108930844A CN 201810938784 A CN201810938784 A CN 201810938784A CN 108930844 A CN108930844 A CN 108930844A
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- Prior art keywords
- pipe
- slip casting
- steel
- multiple tube
- tube
- Prior art date
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Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 63
- 239000010959 steel Substances 0.000 title claims abstract description 63
- 238000007569 slipcasting Methods 0.000 title claims abstract description 55
- 239000012530 fluid Substances 0.000 title claims abstract description 40
- 238000010438 heat treatment Methods 0.000 title claims abstract description 33
- 239000005413 snowmelt Substances 0.000 title claims abstract description 25
- 229920003023 plastic Polymers 0.000 claims abstract description 90
- 239000004033 plastic Substances 0.000 claims abstract description 90
- 239000002184 metal Substances 0.000 claims abstract description 44
- 239000004567 concrete Substances 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims description 21
- 239000004570 mortar (masonry) Substances 0.000 claims description 16
- -1 polyethylene Polymers 0.000 claims description 12
- 239000004698 Polyethylene Substances 0.000 claims description 10
- 229920000573 polyethylene Polymers 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 238000011049 filling Methods 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 abstract description 10
- 238000005260 corrosion Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 238000002347 injection Methods 0.000 description 11
- 239000007924 injection Substances 0.000 description 11
- 238000012546 transfer Methods 0.000 description 10
- 239000002131 composite material Substances 0.000 description 9
- 239000002689 soil Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 238000002360 preparation method Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 244000035744 Hura crepitans Species 0.000 description 5
- 238000013461 design Methods 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 229920001169 thermoplastic Polymers 0.000 description 5
- 239000004416 thermosoftening plastic Substances 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000004800 polyvinyl chloride Substances 0.000 description 3
- 229920000915 polyvinyl chloride Polymers 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 210000004262 dental pulp cavity Anatomy 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229920006324 polyoxymethylene Polymers 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 239000004831 Hot glue Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229920001617 Vinyon Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000002742 anti-folding effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005183 dynamical system Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000009955 starching Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
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
- F16L9/00—Rigid pipes
- F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
-
- 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
- F16L53/00—Heating of pipes or pipe systems; Cooling of pipes or pipe systems
- F16L53/30—Heating of pipes or pipe systems
- F16L53/32—Heating of pipes or pipe systems using hot fluids
Abstract
The invention discloses a kind of steel for fluid heating snow melt to mould slip casting multiple tube, is formed in plastic inner pipe and metal outer pipe between by plastic inner pipe, metal outer pipe and by slip casting and fills up the concrete layer in space between the two and is constituted.The multiple tube long service life, corrosion resistance is strong, small on the influence of the fracture resistance of concrete road surface, and heating conduction is strong.
Description
Technical field
The present invention relates to pavement snow melting technical fields, multiple more particularly to a kind of steel modeling slip casting for fluid heating snow melt
Close pipe.
Background technique
It is using dynamical system that the energy of external heat source is flexibly defeated as carrier progress using hot fluid that fluid heats snow-melting system
It is equipped with realization snow melt, compared with dispensing the passive snow melt mode such as Chemical deicers, mechanical deicing's snow method, fluid heats snow melt system
System can carry out preventative active according to snowfall and weather condition and remove the snow, and system controllability and measurability is strong, energy utilization rate is high, heat source is wide
General (can be conventional heat sources or renewable heat source), simple installation.
It is to recycle hot fluid in the pipeline being embedded in inside face that fluid, which heats snow-melting system, is passed through
Heat convection heat exchange method at tube wall makes the heat transfer of fluid give road face structure, will by the heat transfer inside structure sheaf
Heat transfer is to road body surface face, and then logical heat transfer and ice and snow carry out heat exchange, to achieve the purpose that deicing or snow melting.Herein
In system, the low-freezings solution such as aqueous solution of propylene glycol, glycol water can be used as circulatory mediator；And it is embedded in face and works as
In tubing, good heatproof, corrosion resistance and good intensity and flexibility are needed, so as in construction and installation
Cheng Dangzhong and using working stage there is good resistances tube fluid to corrode and resist pavement loading such as automobile, winged
The ability of machine load action.
Currently, fluid heating pipeline tubing generally has metal tube such as steel pipe, PSP steel-plastics composite pipe and plastic tube etc..
Steel pipe has intensity height, and linear expansion coefficient and concrete are close, is mainly used for heat donor fluid conveying and uses, thermal conductivity
It can be strong.But since fluid generally adds anti-icing fluid, there is microcorrosion, therefore steel pipe is not suitable for making directly as heating tube
With.
It is raw material that plastic tube, which is usually with synthetic resin, that is, polyester, stabilizer, lubricant, plasticizer is added etc., with
The method of " modeling " forms in tuber through extrusion process, be mainly used as building construction tap water supply system piping, draining,
Exhaust and blowdown sanitary pipe, subsoil drain system, rain pipe and electric wire install matched penetration pipe etc..Plastic tube, point
For thermoplastic pipes and thermosetting plastics pipe two major classes.Belonging to thermoplastic has polyvinyl chloride pipe, polyethylene pipe, polypropylene
Pipe, polyformaldehyde pipe etc.；Belonging to heat cured has phenola plastics pipe etc..The major advantage of plastic tube be good corrosion resisting property, light weight, at
Type convenience, handling ease, the pipeline flexibility of thermoplastics type and ductility are relatively preferable；But the heating conduction of plastic tube and anti-folding
Compressive property is poor.The impact force of traffic loading is larger on blocking the way face or pavement slab between faulting of slab ends quiet shifting when, the resistance of plastic tube
Ability is weaker, there is the risk for being cut off and forming leakage.
PSP steel-plastic composite pressure pipe is novel metal and the compound tubing of plastics, interior generally using welded still pipe as middle layer
Outer layer is vinyon, using hot melt adhesive special, the tubing being combined into one by extruding forming method.The tubing overcomes
Easy-to-rust existing for steel pipe, have pollution, heaviness, service life it is short it is low with intensity existing for plastic tube, swell increment is big, easily-deformable
Defect, and the Common advantages with steel pipe and plastic tube, if oxygen barrier is good, has higher rigidity, underground pipe is easy detection etc..
But PSP steel-plastics composite pipe there are integral strengths smaller, the poor disadvantage of heating conduction.In addition when using PSP steel-plastics composite pipe
When, to long-distance transmission pipeline, longest 12m need to have hot melt or electric fusion joint at one, by taking F class runway designs width 60m as an example,
Need connector at least 4.If needing connector at one at 5m in conjunction with runway working procedure, 60m is needed at least 11
Connector.More connector will cause fluid leakage risk.
Therefore, it is necessary to novel pipelines, and to solve, above-mentioned there are technical problems.
Summary of the invention
In order to overcome disadvantage mentioned above, it is an object of that present invention to provide a kind of steel modeling slip casting for fluid heating snow melt is compound
Pipe and preparation method, the multiple tube long service life, corrosion resistance is strong, small on the influence of the fracture resistance of concrete road surface,
Heating conduction is strong.
According to an aspect of the present invention, a kind of steel modeling slip casting multiple tube for fluid heating snow melt is provided, by plastics
It pipe 30, metal outer pipe 10 and is formed between plastic inner pipe and metal outer pipe by slip casting and fills up the mixed of space between the two
Solidifying soil layer 20 is constituted.
An embodiment according to the present invention, wherein the plastic inner pipe 30 is polyethylene pipe.
An embodiment according to the present invention, wherein the polyethylene pipe is De25 plastic tube.
An embodiment according to the present invention, wherein the metal outer pipe is DN32 steel pipe.
An embodiment according to the present invention, wherein the length of steel modeling slip casting multiple tube is 1-60 meters.
An embodiment according to the present invention, wherein steel modeling slip casting multiple tube is eccentric pipe, the plastic inner pipe
Cross section geometric center be not overlapped with the cross section geometric center of the metal outer pipe.
An embodiment according to the present invention, wherein the plastic inner pipe locally reclines with the metal outer pipe.
An embodiment according to the present invention, wherein press mortar used in slip casting or grouting material meet mark
Quasi- TB/T3192-2008 or JTG/TF502011.
An embodiment according to the present invention, wherein the press mortar or grouting material include H-60 grouting agent.
An embodiment according to the present invention, wherein the thermal coefficient of steel modeling slip casting multiple tube is greater than 1.0W/
Such as 2.0W/ (mK), 3.0W/ (mK), 4.0W/ (mK), 5.0W/ (mK), 6.0W/ (mK) etc. (mK),.
According to another aspect of the present invention, a kind of preparation of steel modeling slip casting multiple tube for fluid heating snow melt is provided
Method, the steel modeling slip casting multiple tube are formed in outside plastic inner pipe and metal by plastic inner pipe, metal outer pipe and by slip casting
Between pipe and fills up the concrete layer in space between the two and is constituted, which comprises
The metal outer pipe is provided；
The plastic inner pipe is provided, and plastic inner pipe is placed among metal outer pipe；With
There is provided press mortar or grouting material, and by its pressure injection between the plastic inner pipe and metal outer pipe in space,
To form the concrete layer.
An embodiment according to the present invention, wherein the press mortar or grouting material comply with standard TB/T3192-
2008 or JTG/TF502011.
An embodiment according to the present invention, wherein the press mortar or grouting material include H-60 grouting agent.
An embodiment according to the present invention, wherein the pressure when pressure injection is about 1.0~1.4MPa, preferably
1.1~1.3MPa, more preferably 1.2MPa.
An embodiment according to the present invention, wherein the injection speed when pressure injection is about 0.3-0.7m/s, preferably
For 0.5m/s.
An embodiment according to the present invention, wherein the system of the steel modeling slip casting multiple tube for fluid heating snow melt
Preparation Method further includes blocking the both ends of the plastic tube, and water is injected in it before the pressure injection.
An embodiment according to the present invention, wherein the pressure for injecting water in the plastic tube is no more than 0.4MPA.
An embodiment according to the present invention, wherein the system of the steel modeling slip casting multiple tube for fluid heating snow melt
Preparation Method also further includes adding solids in the plastic tube before closure, such as add thinner mass such as steel wire,
For adjusting the weight of plastic tube.
The invention solves many technical problems tubing that fluid heating snow-melting system was selected in the past present in, produces
Beneficial technical effect:
1) service life can be up to 50 years.The service life of plastic tube can be up to 50 years, therefore by the plastics of innermost layer
Pipe undertakes heating fluid conveying function, it can be achieved that the pipeline more than road face design period (generally 30 years) uses duration.
2) corrosion resistance is strong.Steel pipe corrosion resistance itself is weaker, is not suitable for conveying heating fluid, plastic tube corrosion resistant
Erosion ability is most strong, can be used for directly transporting fluid.Using steel pipe as the outer protective shell of plastic tube, mortar is filled between the two, it can
Further strengthen the intensity and resistance to corrosion of compound pipeline complex pipeline.
3) " steel moulds slip casting multiple tube " thermal coefficient of the invention is preferable, is much better than PSP pipe and plastic tube.It therefore can be real
Existing good heat transfer and snow melt effect.
Detailed description of the invention
Fig. 1 is the steel modeling slip casting composite pipe structure signal for fluid heating snow melt according to an embodiment of the invention
Figure.
Fig. 2 is the preparation side of the steel modeling slip casting multiple tube for fluid heating snow melt according to an embodiment of the invention
The flow diagram of method.
Fig. 3 is the structural representation that pipeline heating conduction is detected using sandbox model according to an embodiment of the invention
Figure.
Specific embodiment
Present invention is further described in detail in the following with reference to the drawings and specific embodiments, but not as to limit of the invention
It is fixed.
Fig. 1 is that the steel modeling slip casting composite pipe structure for fluid heating snow melt of an embodiment according to the present invention shows
It is intended to.As shown in Figure 1, steel modeling slip casting multiple tube includes three parts namely plastic inner pipe 30, metal outer pipe 10 and concrete
Layer 20, wherein the concrete layer 20 is formed between plastic inner pipe and metal outer pipe by slip casting and fills up sky between the two
Between, the high temperature fluid 40 for providing thermal energy is flowed in plastic inner pipe 30.
Metal outer pipe 10 for example can be steel pipe, such as DN32 steel pipe, specifically can according to need to select steel appropriate
Tubing type.The length of steel pipe and diameter etc. can select according to specific needs, such as when the longer length such as 60 of needs
More steel pipes can be carried out silk and connect or weld by meter Shi.Metal outer pipe 10 is used as outer layer pipe, can mould slip casting multiple tube for steel
Good intensity and protection are provided.
Plastic inner pipe 30 can be thermoplastic pipes and thermosetting plastics pipe, such as can be polyvinyl chloride pipe, poly- second
Alkene pipe, PA tube, polyformaldehyde pipe, phenola plastics pipe etc..The internal diameter and length of plastic tube, which can according to need, to be selected, example
If its internal diameter can be selected with the design discharge of snow melt fluid, but its outer diameter should be suitably less than above-mentioned metal outer pipe
Internal diameter.Such as difference between the two can be 5mm-20mm, such as 6mm, 7mm, 8mm, 10mm, 15mm etc..Art technology
Personnel can according to need to be readily selected diameter appropriate.The length of plastic inner pipe 30, which can according to need, comes appropriate section
It takes, such as 1m, 5m, 10m, 30m, 60m etc..
Such as 30 major advantage of plastic inner pipe is good corrosion resisting property, light weight, convenient formation, handling ease, thermoplastics type
Pipeline flexibility and ductility are relatively preferable.An embodiment according to the present invention, wherein the plastic inner pipe 30 is De25
Polyethylene pipe.
In order to ensure snow melt effect, enhancing is thermally conductive, and the present invention is between outer tube (steel pipe) and heating tube (plastic tube)
Void layer is filled closely knit.As shown in Figure 1, multiple tube of the invention further includes setting outside the plastic inner pipe 30 and metal
Concrete layer 20 between pipe 10.The concrete layer 20 can be formed between plastic inner pipe and metal outer pipe and be filled up by slip casting
Space between the two.Concrete layer 20 makes plastic inner pipe 30 fixed, also support is provided for metal outer pipe 10, so that multiple tube
It is firmer on the whole, realize the technologies effects such as resistance to compression shock resistance, corrosion-resistant strong, good heat conductivity and long service life
Fruit.
More specifically, concrete layer 20 of the invention utilizes press mortar or grouting material, through slip casting in plastics
It is formed between pipe 30 and metal outer pipe 10.Be perfused mud jacking after formed concrete layer 20 it is closely knit, without hollowing, bubble-free, and
Integrated piping is in close contact ungauged regions without deformation, the outer wall and injecting paste material of outer tube wall and inner tube.In addition, integrated piping is also
With good thermal conductivity, hence it is evident that managed better than plastic tube or PSP, such as the thermal coefficient that can have is greater than 1.0W/ (m
), such as 2.0,3.0,4.0,5.0W/ (mK) etc. K.
For this purpose, can for example preferably conform to those of standard TB/T3192-2008 or JTG/TF502011 press mortar or
Grouting material, more preferably those include the press mortar or grouting material of H-60 grouting agent.Based on the teachings of the present invention and combine
The prior art, those skilled in the art can be readily selected suitable press mortar or grouting material.
As shown in Figure 1, steel modeling slip casting multiple tube of the invention can be the section of eccentric pipe namely the plastic inner pipe 30
Geometric center is not overlapped with the cross section geometric center of the metal outer pipe 10.It means that concrete layer 20 is in plastic inner pipe 30
Thickness between metal outer pipe 10 is not uniform.Such as shown in figure, the thickness of concrete layer 20 from top to bottom gradually becomes
Small, upper thickness is less than the thickness of lower part.Further, the top section of plastic inner pipe 30 or even the metal outer pipe 10 that can recline
Inner wall.
When by such eccentric pipe according to embedment underground as shown in the figure, due to accommodating the plastic inner pipe 30 of high temperature fluid more
Add close to the metal outer pipe 10 that even reclines, therefore the heating conduction on the top of multiple tube is more preferable, is more easier thermal energy conduction extremely
Ground can be realized better snow melt effect.
The formation process of 2 the present invention is further explained multiple tubes with reference to the accompanying drawing.With reference to attached drawing 2, use of the invention
It may include steps of in the preparation method of the steel modeling slip casting multiple tube of fluid heating snow melt:
Firstly, providing metal outer pipe 10, can according to need to select metal pipe material appropriate such as DN32 steel pipe.Steel pipe
Length and diameter etc. can select according to specific needs, can will such as when needing longer such as 60 meters of length
More steel pipes are welded；
Plastic inner pipe 30 is provided, and plastic inner pipe is placed among metal outer pipe, such as De25 polyvinyl chloride can be provided
Whole plastic tube is carried out poling using the manually or mechanically modes such as traction by pipe.The diameter of plastic tube can be according to snow melt fluid
Design discharge selected, outer diameter is suitably less than the internal diameter of above-mentioned metal outer pipe.Such as difference between the two can be
5mm-30mm, such as 6mm, 7mm, 8mm, 10mm, 1mm, 20mm, 25mm etc..The length of plastic inner pipe 30 can be according to metal
The degree of outer tube intercepts, for example, can the length appropriate that metal outer pipe is slightly longer than, reserve plastic tube two sides end length, so as to
In subsequent operation；
There is provided press mortar or grouting material, and by its pressure injection between the plastic inner pipe and metal outer pipe in space,
To form the concrete layer 20 for being full of the space.Press mortar or grouting material can choose those and comply with standard TB/
The material of T3192-2008 or JTG/TF502011, preferably those include the press mortar or grouting material of H-60 grouting agent.It will
The press mortar or grouting material modulated is by grouting equipment indentation pipeline clearance layer (namely the plastic inner pipe and metal outer pipe
Between space).Can select grouting pressure appropriate as the case may be, for example, can for 1.0~1.4MPa, for example
1.1MPa,1.2MPa,1.3MPa.It can control injection speed, such as 0.3-0.7m/s, such as 0.5m/s appropriate or so, and
And with suitable control and slip casting time of every root canal can be selected, such as every root canal the slip casting time can at 1.5~3 minutes, 2~
2.5 minute.Grouting equipment is well known to those skilled in the art, and is not repeated herein.
Due to the comprehensive function of the gravity and buoyancy of fluid, plastic inner pipe 30 floats bias during slip casting, thus
Cause to be formed by steel modeling slip casting multiple tube to be outside the cross section geometric center and the metal of eccentric pipe namely the plastic inner pipe
The cross section geometric center of pipe is not overlapped or even the top of the plastic inner pipe and the inner wall of the metal outer pipe locally recline.When
When by such eccentric pipe according to embedment underground as shown in Figure 1, due to accommodating the plastic inner pipe 30 of high temperature fluid closer to very
To the metal outer pipe 10 that reclines, therefore the heating conduction on the top of multiple tube is more preferable, is more easier thermal energy conduction to ground, can
Realize better snow melt effect.
Preferably, further include according to the method for the present invention the both ends of the plastic inner pipe 30 are blocked before slip casting, and
Water is injected in it.The weight for injecting the adjustable plastic inner pipe of water, it is possible thereby to adjust bias of the plastic inner pipe in slip casting
Degree.Mass such as steel wire etc. can certainly be added in plastic inner pipe, to adjust the weight of plastic inner pipe, adjust inclined
Heart degree, thus it is even possible that multiple tube it is not eccentric.Meanwhile water filling additionally aids the inside pressure for keeping plastic inner pipe 30
Power prevents from flattening plastic inner pipe 30 during slip casting.,
Those skilled in the art should be readily appreciated that.It can choose water injection pressure appropriate, prevent water injection pressure excessively high and cause
Plastics tube swelling, such as the pressure of injection water can be no more than 0.4MPa.It, can be by the water in plastic tube after slurry condensation
Or other mass remove.
Below with reference to embodiment, the present invention is further explained.
Embodiment-preparation of steel modeling slip casting multiple tube and the detection of performance parameter
Material and parameter:
Metal outer pipe be DN32 welded still pipe, 24 meters of length, outer diameter 41.23mm, wall thickness 2.47mm；
Plastic inner pipe be De25 polyethylene pipe, 24 meters of length, outer diameter 24.57mm, wall thickness 3.1mm；
Injecting paste material: the weight ratio of 30:10:90 measures water, grouting agent (H-60), cement, reference standard TB/T3192-
2008；
Grouting pressure: about 1.2MPa, injection speed: about 0.5m/s or so；
Water is full of in plastic inner pipe, both ends block, overpressure about 0.4MPa；
Steel modeling slip casting multiple tube is prepared using method of the invention, multiple samples are averaged, finally obtained steel modeling note
The length for starching multiple tube is 2496mm, eccentricity 4mm；
In addition, comparing group using DN32 welded still pipe, De25 polyethylene pipe, De25PSP steel-plastics composite pipe.Each product
Performance parameter see the table below 1.
Table 1: different pipe performance contrast tables 1
Wherein, the detection of concrete flexural strength is according to GBT 50082-2009 " normal concrete long-term behaviour and durable
Method for testing performance standard " and GBT 50081-2002 " standard for test methods of mechanical properties of ordinary concrete " carry out, most
The present invention and the addition FC fiber of other control tubes are obtained eventually, add 28d concrete flexural strength after pipe: as shown above, this
The steel modeling slip casting multiple tube of invention shows preferable concrete flexural strength, higher than the requirement of design standard 5.0MPa, and
Performance is better than other most of control tubes.
The detection of heating conduction is as follows:
By test section (including steel of the present invention modeling slip casting multiple tube, DN32 welded still pipe, De25PSP steel-plastics composite pipe,
De25 polyethylene pipe) it is respectively embedded in the soil that thermal coefficient is 1.25W/m.K, pipeline center's wheelbase ground 1m utilizes perseverance
Tepidarium circulates 40 DEG C of temperature of hot water with the speed of 2.0m/s and 1.2m/s in the duct, in test section length side
Thermal resistance temperature sensor (tube wall temperature being measured, in Fig. 3 shown in bullet) and hot-fluid is respectively set in tube top, tube bottom to center
Sensor surveys piece；In soil right above away from tube top at 0.95m, 3 thermal resistance temperature sensing are arranged along pipeline section axial direction
Device (number 1,2,3 is spaced 0.3m, the soil moisture close to soil surface is measured, referring to attached drawing 3).
30 DEG C of environment temperature of test, by 3 hours stabilizations, temperature sensor numerical fluctuations were less than 0.5 DEG C.
Medium is flowed with the speed of 2m/s and 1.2m/s, the convection transfer rate flowed in computer tube.Heat exchange amount depends on
The temperature difference of tube wall and medium, in stage on-test, since tube wall and the medium temperature difference are larger, exchange heat it is more violent, developmental tube into
The medium temperature drop of outlet is obvious, and tube wall temperature is relatively stable after 3 hours, and with medium temperature temperature difference very little, heat transfer effect
It is suppressed.But heat exchange is still main means, relatively thin in view of structure, and heat transfer is not still principal element, and examination is covered in sandbox
The soil mass volumetric heat capacity tested around pipe is tabled look-up as 2J/g.cm3, sandbox peripheral air thermal coefficient is 0.02W/ (mK),
Much smaller than soil thermal conductivity 1.25W/ (mK), environment temperature is higher, be equivalent to sandbox carry out isothermal holding, can approximation recognize
Be under adiabatic condition for sandbox, when test single developmental tube 3 hours time to soil transmitting heat to soil temperature rise not
Obviously.
Testing result shows: being λ 25 when the comprehensive thermal coefficient in eccentric structure top of the invention is at 25 DEG C of mean temperature
=5.09W/ (mK)；It is λ 25=2.37W/ (m when the comprehensive thermal coefficient in this eccentric structure lower part is at 25 DEG C of mean temperature
K)。
That is, the heating conduction of steel modeling slip casting multiple tube of the invention be better than PSP steel-plastics composite pipe, polyethylene pipe and
Concrete is only second to steel pipe, therefore heating conduction is very good, is conducive to conduct heat.And eccentric structure be also advantageous to fluid to
Upper heat transfer snow melt.
Previous fluid heating snow melt pipe material selection is single, and there are some problems.The present invention solves fluid heating and melts
Avenge pipeline some FAQs, such as burn into connector leakage, on pavement condition influence, plastic pipe itself it is anti-shearing difference ask
Topic.
In addition, the present invention is eccentric pipe.Plastic conduit is under the pressure head of slurry on built-in plastic tube nature in process
It is floating, close to steel duct upper wall is even close to, causes heating conduction superior, be advantageous to heat transfer.
Inventive pipeline by length limitation, can not flexibly construct according to the construction demand in municipal road face, changeable.
The above is only the preferable embodiment of the present invention, not does in any form to technical solution of the present invention
Limitation.Any simple modification, form variation and modification are made to above embodiments according to the technical essence of the invention, fallen
Enter protection scope of the present invention.
Claims (10)
1. a kind of steel for fluid heating snow melt moulds slip casting multiple tube, by plastic inner pipe, metal outer pipe and pass through slip casting shape
At between plastic inner pipe and metal outer pipe and filling up the concrete layer in space between the two and constituted.
2. steel as described in claim 1 moulds slip casting multiple tube, wherein the plastic inner pipe is polyethylene pipe.
3. steel as claimed in claim 2 moulds slip casting multiple tube, wherein the polyethylene pipe is De25 plastic tube.
4. steel as described in claim 1 moulds slip casting multiple tube, wherein the metal outer pipe is DN32 steel pipe.
5. steel as described in claim 1 moulds slip casting multiple tube, wherein the length of steel modeling slip casting multiple tube is 1-60 meters.
6. steel as described in claim 1 moulds slip casting multiple tube, wherein steel modeling slip casting multiple tube is eccentric pipe, the plastics
The cross section geometric center of inner tube is not overlapped with the cross section geometric center of the metal outer pipe.
7. steel as claimed in claim 6 moulds slip casting multiple tube, wherein the plastic inner pipe locally reclines with the metal outer pipe.
8. steel as described in claim 1 moulds slip casting multiple tube, wherein press mortar used in slip casting or grouting material symbol
Standardization TB/T3192-2008 or JTG/TF502011.
9. steel as claimed in claim 8 moulds slip casting multiple tube, wherein the press mortar or grouting material include H-60 mud jacking
Agent.
10. steel as described in claim 1 moulds slip casting multiple tube, wherein the thermal coefficient of steel modeling slip casting multiple tube is greater than
1.0W/(m·K)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810938784.0A CN108930844B (en) | 2018-08-17 | Steel-plastic grouting composite pipe for heating and melting snow by fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810938784.0A CN108930844B (en) | 2018-08-17 | Steel-plastic grouting composite pipe for heating and melting snow by fluid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108930844A true CN108930844A (en) | 2018-12-04 |
| CN108930844B CN108930844B (en) | 2024-05-14 |
Family
ID=
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112959705A (en) * | 2021-02-04 | 2021-06-15 | 广东韶钢松山股份有限公司 | Production process of wear-resistant composite pipe filled with adhesive mortar |
| CN114591041A (en) * | 2022-03-21 | 2022-06-07 | 绍兴市水联管业有限公司 | Formula of filling concrete for composite pipe fitting |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1109026A (en) * | 1965-09-30 | 1968-04-10 | Moore & Co Samuel | Composite tubing |
| US3400737A (en) * | 1966-07-07 | 1968-09-10 | Moore & Co Samuel | Composite tubing product and apparatus for manufacturing the same |
| CN2090037U (en) * | 1990-07-31 | 1991-12-04 | 王道仁 | Eccentric heating pipe |
| JPH1161722A (en) * | 1997-08-11 | 1999-03-05 | Hokkaido Sekisui Kogyo Kk | Pipe for heating medium-circulation |
| CN2317377Y (en) * | 1998-03-17 | 1999-05-05 | 张俊梅 | Composite corrosion-resisting industrial pipeline |
| CN1435669A (en) * | 2002-01-30 | 2003-08-13 | 三星电机株式会社 | Heat pipe and mfg. method thereof |
| US20040050443A1 (en) * | 2002-08-15 | 2004-03-18 | Enrique Trivelli | Composite pipe formed by a metallic outer pipe with inner lining of plastic material, method for manufacturing said pipe, and its use |
| CN200989490Y (en) * | 2006-06-05 | 2007-12-12 | 梁宇成 | Cement material reinforced composite pipe |
| CN105909885A (en) * | 2016-06-27 | 2016-08-31 | 山东鲍尔浦塑胶股份有限公司 | Prestressed cylinder concrete and plastic composite pipe and construction method thereof |
| CN106247030A (en) * | 2016-08-15 | 2016-12-21 | 中国石油大学(北京) | A kind of novel Land petroleum delivery combined tube |
| CN107191695A (en) * | 2017-07-19 | 2017-09-22 | 深圳市昱意科技有限公司 | A kind of antisiludging constant temperature conveying pipeline device of chemical industry feed liquid |
| CN206974258U (en) * | 2017-05-11 | 2018-02-06 | 昆山莹帆精密五金有限公司 | A kind of eccentric heat tube capillary structure |
| CN208845883U (en) * | 2018-08-17 | 2019-05-10 | 中国中元国际工程有限公司 | A kind of steel modeling slip casting multiple tube for fluid heating snow melt |
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1109026A (en) * | 1965-09-30 | 1968-04-10 | Moore & Co Samuel | Composite tubing |
| US3400737A (en) * | 1966-07-07 | 1968-09-10 | Moore & Co Samuel | Composite tubing product and apparatus for manufacturing the same |
| CN2090037U (en) * | 1990-07-31 | 1991-12-04 | 王道仁 | Eccentric heating pipe |
| JPH1161722A (en) * | 1997-08-11 | 1999-03-05 | Hokkaido Sekisui Kogyo Kk | Pipe for heating medium-circulation |
| CN2317377Y (en) * | 1998-03-17 | 1999-05-05 | 张俊梅 | Composite corrosion-resisting industrial pipeline |
| CN1435669A (en) * | 2002-01-30 | 2003-08-13 | 三星电机株式会社 | Heat pipe and mfg. method thereof |
| US20040050443A1 (en) * | 2002-08-15 | 2004-03-18 | Enrique Trivelli | Composite pipe formed by a metallic outer pipe with inner lining of plastic material, method for manufacturing said pipe, and its use |
| CN200989490Y (en) * | 2006-06-05 | 2007-12-12 | 梁宇成 | Cement material reinforced composite pipe |
| CN105909885A (en) * | 2016-06-27 | 2016-08-31 | 山东鲍尔浦塑胶股份有限公司 | Prestressed cylinder concrete and plastic composite pipe and construction method thereof |
| CN106247030A (en) * | 2016-08-15 | 2016-12-21 | 中国石油大学(北京) | A kind of novel Land petroleum delivery combined tube |
| CN206974258U (en) * | 2017-05-11 | 2018-02-06 | 昆山莹帆精密五金有限公司 | A kind of eccentric heat tube capillary structure |
| CN107191695A (en) * | 2017-07-19 | 2017-09-22 | 深圳市昱意科技有限公司 | A kind of antisiludging constant temperature conveying pipeline device of chemical industry feed liquid |
| CN208845883U (en) * | 2018-08-17 | 2019-05-10 | 中国中元国际工程有限公司 | A kind of steel modeling slip casting multiple tube for fluid heating snow melt |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112959705A (en) * | 2021-02-04 | 2021-06-15 | 广东韶钢松山股份有限公司 | Production process of wear-resistant composite pipe filled with adhesive mortar |
| CN114591041A (en) * | 2022-03-21 | 2022-06-07 | 绍兴市水联管业有限公司 | Formula of filling concrete for composite pipe fitting |
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