CN108486989A - Passive geothermal snow melt deicing device and its construction technology - Google Patents
Passive geothermal snow melt deicing device and its construction technology Download PDFInfo
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- CN108486989A CN108486989A CN201810466691.2A CN201810466691A CN108486989A CN 108486989 A CN108486989 A CN 108486989A CN 201810466691 A CN201810466691 A CN 201810466691A CN 108486989 A CN108486989 A CN 108486989A
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/24—Methods or arrangements for preventing slipperiness or protecting against influences of the weather
- E01C11/26—Permanently installed heating or blowing devices ; Mounting thereof
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a kind of passive geothermal snow melt deicing devices, road-surface heating pipe group including being laterally embedded in shallow layer surface, required heating road surface both sides are provided with the level header parallel with road surface length direction and the inbuilt underground pipe group of vertical deep layer, road-surface heating pipe group and underground pipe group are connect with level header, and water pump is equipped on level header；Road-surface heating Guan Zuyou manifold and branch pipe composition, manifold is installed on the outside of road surface and parallel with road surface length direction, manifold includes the outer tube nested together and inner tube, is filled with inorganic heat-conducting medium layer between inner and outer pipes, the inner cavity between branch pipe and the inner and outer pipes of manifold is connected to；Level header is connected with the inner tube of road-surface heating pipe group manifold, the heat transfer that level header collects is to heating tube group manifold inner tubes, and heat the inorganic heat-conducting medium between inner and outer tubes, heat is transferred to face by the branch pipe of road-surface heating pipe group, realizes snow melt ice-melt.The invention also discloses the construction technologies of the device.
Description
Technical field
The present invention relates to a kind of road heating technique, especially a kind of passive geothermal snow melt deicing device and its construction work
Skill.
Background technology
The large area open air facilities such as airfield runway, highway, town road in use, ice and snow weather can bring it is huge
Big influence is gently then delayed traffic passage, heavy then can lead to safety accident.Therefore, above-mentioned facility is answered in ice and snow weather use
The needs carry out snow melt and thaw operation, and traditional mode is to spread snow melt ice melting agent, but it is higher to spread snow melt ice melting agent cost, over the ground
Face setting causes to corrode, while also polluting the environment.
A kind of super conducting heat transfer medium is disclosed in the Chinese invention patent that Patent publication No is CN1238721A, it can be quick
Transmit heat.
A kind of underground heat heat pipe-type ablation is disclosed in the Chinese utility model patent that Authorization Notice No. is CN201236307Y
Subsurface temperature is transferred to earth's surface using more heat pipes, carries out snow melt, but there are disadvantages for this scheme by ice and snow on road surfaces device.Heat
Under pipe is difficult in depth, cold district only leans on the geothermal energy of pole shallow-layer to be difficult to carry out snow melt operation, in addition, in order to ensure that heat supply is equal
It is even, also intensive punching heat pipe need to be placed at use, ground intensity is impacted, while inconvenient later maintenance or renovation.
Road snow can be eliminated in time by disclosing one kind in the Chinese invention patent that Authorization Notice No. is CN201459566U
Geothermal road surface thawing device, using recirculated water road pavement heat, prevent shallow freezing.This scheme equally exists disadvantage, profit
With the scheme of buried circulating water pipe, although heating effect is good, liquid is easy to be expanded with heat and contract with cold, and influences earth's surface quality, and
It needs to destroy sheet pavement when damage, and cold season, recirculated water freezed in order to prevent, needed continuous heating, it is most of
Fair weather also needs to be heated, and wastes mass energy.
Authorization Notice No. is that the patent of CN1194145C discloses a kind of device for melting snow using underground heat, by vertically burying
Heating device in underground, and the first non-freezing solution recycled between heat exchanger acquire underground heat, and the underground heat of acquisition passes through heat and hands over
Parallel operation, and with the passage of the second non-freezing solution recycled between heat exchanger and the heat outting pipe of snow melt place setting, in snow melt
Place discharges heat to melt accumulated snow, is equipped with toward road and returns to make the first non-freezing solution recycle between heating device and heat exchanger
Road is provided with the circulating pump for recycling the first non-freezing solution on the circuit.This patent is to utilize the first non-freezing solution of underground
Heat exchanger exchanges to the second non-freezing solution, which is exchanged heat using heat exchanger, and heat transfer process increases thermal loss, the
Two non-freezing solutions cannot fully absorb the heat of the first non-freezing solution, reduce Snow-melting speed.With heat exchanger prolonged use,
Easily there is the problems such as blocking, fouling, reduces heat exchange efficiency.Circulating pump is increased in non-freezing solution circulation line, increases energy consumption.
Heat outting pipe uses horizontal S types coil pipe, and pipeline is long, increases the on-way resistance of pipeline, also increases the energy consumption of water pump.Heating device, S
Type heat-releasing pipeline, heat exchanger, circulating pump, the connection of each section increase the quantity of connector, are applied to the connection of pipeline, equipment
Work precision has higher requirement, if quality control on construction is not stringent, system is revealed, then can pollute Rock And Soil and underground
Water.
Authorization Notice No. is that the patent of CN103225281B discloses and a kind of melting airfield runway immediately using geothermal
The ground source heat pump heat accumulation heating system of snowfall, by this three parts group of ground heat exchanger, runway heating tube and earth source heat pump equipment
At between each other by piping connection, thermal change medium is inoculated in pipeline, three closed circuits are formed, to meet system not
Heating together, accumulation of heat pattern, respectively：Ground heat exchanger is taken into heat by the first disengaging supply mains and earth source heat pump equipment
End is linked to be closed circuit one；Runway heating tube is linked to be by the heat supply end of the second disengaging supply mains and earth source heat pump equipment to be closed back
Road two；Ground heat exchanger is linked to be by third disengaging supply mains with heating tube below runway can independent loops closed circuit three；
The laying of heating tube uses " the graduate stringing scheme in subregion " below the runway, wherein different zones pipeline is using simultaneously
Connection mode；The same area different brackets pipeline is in parallel.The medium that the art of this patent carries out snow melt is thermal change medium, does not disclose Jie
The specific ingredient of matter, generic media heat transfer is slow, and heat exchange efficiency is low.Increase earth source heat pump equipment, that is, investment cost is increased, in product
When snow is not thick or does not freeze, the operating cost that heat pump unit increases system is opened.Heat outting pipe uses horizontal S types coil pipe,
And third disengaging supply mains is increased, pipeline is longer, is susceptible to three aspect problems：One increase heating pipeline along journey
Resistance, the distalmost end of pipeline influence the speed of snow melt ice-melt since the decline of flow rate of water flow can reduce heat exchange efficiency；Second,
A large amount of pipeline is buried under road face, and certain destruction, and the characteristic due to expanding with heat and contract with cold are caused to the bearing capacity in road face, can be caused
Heating tube and airfield runway are different degrees of to expand with heat and contract with cold, and then influences the service life of runway；Third, using horizontal S types disk
Pipe, increases the connector of pipeline enclosure, increases the risk of leakage.Accumulation of heat pattern in this programme is relatively difficult to achieve, and thermal change is situated between
Matter is stored in pipeline, and storage heat ability is limited, the ground that can not be stored in a large amount of solar heat near runway
In.
Authorization Notice No. is that the patent of CN104594156B discloses a kind of deicing or snow melting system using underground heat in tunnel,
Including heat pump unit, heating tube and heat-exchange tube, the heating tube and heat-exchange tube are formed mutually with heat pump unit unicom respectively
Independent two circulation lines；Fluid in heating tube and heat-exchange tube is provided the power circulated by heat pump unit and is led to
It crosses heat pump unit and carries out heat exchange.The heat-exchange tube of the system is arranged in the vault and both sides abutment wall in tunnel, available ground
The calorie value of body is relatively low, and is only applicable to high-temperature geothermal area and the abundant region of geothermal energy resources, applicable surface are relatively narrow.Heating tube
Interior circulatory mediator is fluid, and the pipeline of a large amount of circulation of fluid is buried under road face, is caused to the bearing capacity in road face certain
It destroys, and fluid generally has the characteristic expanded with heat and contract with cold, heating tube can be caused and road face is different degrees of expands with heat and contract with cold, to
Influence the service life of road；Third, using horizontal S types coil pipe, the connector of pipeline enclosure is increased, fluid leakage is increased
Risk.
Application publication number is that the patent of CN107245923A is disclosed and a kind of melted using the intelligent bridge floor of shallow layer geothermal energy
Snowization ice system, including underground collecting system, bridge floor cooling system, earth source heat pump, roadway-surface-conddetector detector and PLC controls system
System, underground collecting system constitute circulation loop by horizontal and numerical value underground pipe, and bridge floor cooling system is by delivery pipe, heat-dissipating pipe and returns
Flow tube constitutes circulation loop, and roadway-surface-conddetector detector is embedded into bridge deck overlays and is connect with PLC control system.Underground collecting system
It is connect by earth source heat pump between bridge floor cooling system.Vertical pendulum tiltmeters are embedded in inside bridge pile foundation, and heat is led to by pile foundation
Crossing during bridge pier is transferred to bridge floor can be exposed in air, and bridge pier is generally concrete structure, be the good conductor of heat,
The underground heat that Vertical pendulum tiltmeters absorb cannot be discharged into bridge floor to deicing or snow melting by therefore serious heat loss completely.Flatly
Pipe laying is embedded in inside roadbed, and since roadbed is departing from the earth Rock And Soil, the amount of stored heat of roadbed is less, and also because of exposure
In air, thermal loss is also more serious.Therefore the collecting system of the technology is insufficient there are heat-collecting capacity and heat loss is serious
Defect.The heat transferring medium of underground collecting system and bridge floor cooling system is sodium chloride, calcium chloride salt aqueous solution or ethylene glycol, the third two
Alcohol solution, the above heat transferring medium are anti-icing fluid, are that heat transferring medium freezes in cyclic process in order to prevent.Saline solution pair
Most metal has corrosivity, although the tubing in the technology uses polyethylene or pp pipeline, but still can be to heat
It pumps heat exchanger and generates corrosion, and have stimulation to skin and eyes, have an impact to the quality of underground water if occurring to leak.Second two
Alcohol, aqueous solution of propylene glycol service life are limited and toxic.Ethylene glycol viscosity under worst cold case increases, this, which just needs to increase, pumps
Power consumption, reduce the efficiency of entire heat pump system.
Invention content
The purpose of the present invention is to overcome above-mentioned the deficiencies in the prior art, provide a kind of passive geothermal snow melt deicing device
And its construction technology, the device simple structure quickly into the heating of trade face, progress snow melt and can change ice operation.
To achieve the above object, the present invention uses following technical proposals：
A kind of passive geothermal snow melt deicing device, including it is laterally embedded in the road-surface heating pipe group of shallow layer surface, in required liter
Warm road surface both sides are provided with the level header parallel with road surface length direction and the inbuilt underground pipe group of vertical deep layer, the road surface
Heating tube group and underground pipe group are connect with level header, and promising circulation fluid is installed on level header in underground pipe group and level set
Cycle between pipe provides the water pump of driving force；
The road-surface heating Guan Zuyou manifold and branch pipe composition, manifold are installed on the outside of road surface and parallel with road surface length direction,
Manifold includes the outer tube nested together and inner tube, and inorganic heat-conducting medium layer, and inorganic heat-conducting medium are filled between inner and outer pipes
The both ends of layer seal, branch pipe and outer tube vertical connection, and the cavity between manifold inner and outer pipes is connected with branch tube cavity, is formed closed
Inner cavity；
Manifold inner tubes both ends are connect with level header respectively, and the inner tube of level header and road-surface heating pipe group manifold is connected,
The heat transfer that level header collects inorganic is led to heating tube group manifold inner tubes, and by what is filled between the inner and outer tubes of manifold
Thermal medium heats, the branch pipe of heat transfer to road-surface heating pipe group, and branch pipe transfers heat to face, realizes that the snow melt in road face is melted
Ice.
Said inner tube length is more than outer length of tube, and the both ends of inner tube are extended except outer tube.
The branch pipe wall is coated with the inorganic heat-conducting medium layer that thickness is 8~12 μm.
The branch pipe is laid on the state horizontal by 1~2 ° of the elevation angle in pavement concretec layer, and peak is away from ground
For 80~100mm.
The branch pipe is fixed using Steel bar rack, and Steel bar rack is inserted directly into concrete cushion and fixes.
The branch tube outer surface is provided with the erosion resistant coating of bituminous epoxy and glass wool cloth winding, using " three oily two cloth " formula
Construction technology.
The underground pipe group includes the more U-shaped underground pipes being set up in parallel.
The U-shaped underground pipe is list U or double U tube, and caliber is De32 or De25, and tubing and pipe fitting use high-density polyethylene
Alkene PE pipes.
The level header is connect with U-shaped underground pipe group using hot melting way.
The quantity of level header connection U-shaped underground pipe group is set according to header length, collector caliber ranging from De40-
De90, the caliber of rational level header can be selected according to the quantity of connection U-shaped underground pipe group and the length of level header.
Water circulating pump, thermometer, pressure gauge and the height being set in the inspection shaft of face both sides are installed on level header
Position water tank, inspection shaft is brickwork construction.Thermometer and pressure gauge, which is arranged, can conveniently check the temperature and pressure situation of level header；
High water tank can be that system carries out moisturizing, while the gas that generated in water system cyclic process can be discharged in time, reduce system
The resistance of operation.
A kind of construction technology of passive geothermal snow melt deicing device, includes the following steps：
A. underground pipe group and level header construction and installation：
1）Field investigation before pipeline engineering construction, should be investigated, and should grasp the feelings along pipeline according to construction
Condition and data：Site contour, landforms and various line conditions；Engineering geology and hydrogeologic data；Meteorological data；Engineering is used
Ground, communications and transportation and draining, water supply for construction, condition of power supply；
2) line setting determines pipeline change point, branch point and knick point according to drawing, and determines therefrom that pipeline moves towards, true
It sits in meditation on fixed point stake, marks pipe trench center and ditching depth, stretched with cotton rope along stake, spread lime；
3) drilling operating：Trepanning-reaming-drilling to the secondary inspecting hole-down tube-landfill in whole hole-it is closely knit-rise pull out casing；
4) Vertical pendulum tiltmeters group down tube, to ensure that down tube depth meets design requirement, it is necessary to accomplish to carry do not stop after finishing drilling bar it is vertical
That is down tube
5) drilling backfill, drilling finishes, under after complete U-shaped underground pipe group, carry out mechanical backfill, it is ensured that backfill compactness；
6) channel excavation and backfill, the construction of Vertical pendulum tiltmeters group road finish and through after the assay was approved, carrying out the excavation of horizontal channel,
It is laid with after installation is complete after level header and backfills in time；
7) hot-melt adhesive paste of pipeline, to ensure that construction quality, level header connection use hot melting way；Hot melt spigot-and-socket connection is divided into
Five stages：Warm-up phase, endothermic phase, heating plate take out stage, socket joint stage and cooling stage；8) road face both sides are built by laying bricks or stones
Inspection shaft, and water circulating pump, thermometer, pressure gauge and the high water tank in portion disposed within are installed；
B road-surface heating pipe group construction and installation
1）Road-surface heating pipe group（Manifold and branch pipe）Construction site is transported to by workshop processing finished product, is lifted using small crane, together
When by move flat car be responsible for heating tube group carry；
2）Subregion is put after road-surface heating pipe group is transported to scene, and specific placement area will be according to the setting of live flowing water Job partition
Position；
3）The adjustment of plane fixed point position is carried out using theodolite, Sopwith staff and steel ruler, and the adjustment of heating tube group elevation location uses level
Instrument, Sopwith staff instrument are checked in place, fixed to use banding fixed mode.
4）Heating tube group branch pipe is fixed in concrete cushion using Steel bar rack；
5）The inner tube and level header of road surface heating tube group manifold are connected using steel-plastic flange；It, will be buried by U-shaped after the completion of connection
The circulatory system of pipe group, level header and heating tube group inner tube composition carries out the water pressure test, it is ensured that the tightness of circulation line；And
Complete the backfill of groove.
The technology that inorganic heat-conducting medium in the present invention in inorganic heat-conducting medium layer is used with Chinese patent CN1238721A
Scheme is identical, and the inorganic heat-conducting medium has sale in the market, belongs to known technology, details are not described herein.
Heat transfer medium of the present invention in the heating tube group under road face is phase change material, and medium will along cavity wall after by thermal excitation
Heating end thermal energy is transmitted to cold end.Heating tube group surface has good heat transfer property, and thermal resistance is almost nil, and heat transfer rate is fast,
Heat exchange efficiency is high.
In the present invention, snow melt deicing device is made of U-shaped underground pipe group, level header, road-surface heating pipe group, and U-shaped is buried
Circulation power is provided by water pump between Guan Zuyu level headers, heat is transferred to road-surface heating pipe group by way of heat transfer.Ground
Pipe laying is exchanged heat using circulation fluid and the earth, geothermal energy can be transferred to level header, circulating pump makes circulation fluid in underground pipe
It is recycled between level header, the heat in level header is transferred to road-surface heating pipe, road-surface heating by way of heat transfer
Pipe, by geothermal energy rapid Cover ground, is prevented surface temperature relatively low and freezed by heat-conducting medium.
The temperature of winter underground temperature field is about 12~16 DEG C（According to the latitude of project location and groundwater occurrence situation
Depending on）, i.e. only water circulating pump, such heat riser are fully complied with green the road face heating device of passive type using clean energy resource
Colour circle protects energy-efficient theory, has saved investment and administration fee.The device only need to be before road construction, disposably by heat exchange pipeline
It is embedded to underground, and does not influence the physical property on road surface, does not influence service life.The PE that U-shaped underground pipe group and level header use
Tubing matter, have it is anticorrosive, anti-oxidant, service life is long, the higher advantage of heat conductivility.
The present invention is as follows relative to traditional road snow melt mode investment cost and advantage comparison：
Advantages of the present invention is as follows：
1. application field is wide, bridge floor snow melt ice-melt problem can be solved in Roadway Construction；
2. walking fluid under avoiding face, the destruction in face will not be caused because of Pipeline damage；
Be not in secondary accumulated snow icing phenomenon 3. sustainable heat road face；
4. environment protecting and power-saving, meets national policy, face structure is not destroyed, does not cause environmental pollution；
5. once mounting is molded, without needing to change, service life is long, has saved the cost of later maintenance and replacement；
6. being not required to drill under runway, road surface, foundation strength is not destroyed, the maintenance of later stage system is facilitated.
7. road or the full-time use of airfield runway, will not because of accumulated snow, ice presence and deactivate, improve service efficiency,
Also increase economic benefit.
8. completing the laying of road face heating tube group before road surface construction, it is not take up the duration of surface construction..
Traditional is that the single spreading used time is short by the advantages of deicing salt deicing technology, easy to operate.The disadvantage is that：
1. a pair concrete road surface facility causes to corrode, roadside soil property and water quality are polluted, great environmental pollution is caused；
2. snow melt ice-melt cannot be carried out immediately, deicing salt need to be spread immediately, and personnel's machine cost is high；
3. after snowfall causes temperature to reduce, the case where accumulated snow freezes again occur, needing repeatedly to carry out spreading deicing salt, occupy big
Measure labour's material resources；
4. Snow-melting speed is slow, time-consuming, reduces the economic benefit of road or runway.
Description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is A-A profile structure diagram in Fig. 1；
Fig. 3 is underground pipe heat exchange Hole cross-section plotting of the present invention；
Fig. 4 is B-B direction sectional view in Fig. 3；
Fig. 5 is construction technology figure of the present invention；
Wherein, 1. level header, 2. road-surface heating pipe groups, 3. manifold, 4. branch pipes, 5. underground pipe groups, 6. water pumps, 7. inspection shafts,
8. copper ball valve, 9. steel-plastic flanges, 10. pavement concrete layers, 11. inorganic heat-conducting medium layers, 12. circulation fluids, 13. roads or machine
Field runway, 14. backfilling materials, 15. to feed pipe.
Specific implementation mode
Present invention will be further explained below with reference to the attached drawings and examples.
Structure, ratio, size etc. depicted in this specification institute accompanying drawings, only to coordinate specification it is revealed in
Hold, so that those skilled in the art understands and reads, is not limited to the enforceable qualifications of the present invention, therefore does not have skill
Essential meaning in art, the modification of any structure, the change of proportionate relationship or the adjustment of size can be produced not influencing the present invention
Under raw effect and the purpose that can reach, should all still it fall in the range of disclosed technology contents obtain and can cover.
Meanwhile cited such as "upper" in this specification, "lower", "left", "right", " centre " and " one " term, be merely convenient to
Narration is illustrated, rather than to limit the scope of the invention, relativeness is altered or modified, without substantive change
Under technology contents, when being also considered as the enforceable scope of the present invention.
As Figure 1-Figure 4, passive geothermal snow melt deicing device, including laterally it is embedded in the road-surface heating of shallow layer surface
Pipe group 2 is provided with the level header 1 parallel with road surface length direction in required heating road surface both sides and vertical deep layer is inbuilt
Pipe laying group 5, the road-surface heating pipe group 2 and underground pipe group 5 are connect with level header 1, and promising cycle is installed on level header 1
Cycle of the liquid 12 between underground pipe group 5 and level header 1 provides the water pump 6 of driving force；
Road-surface heating pipe group 2 is made of manifold 3 and branch pipe 4, and manifold 3 is installed on the outside of road surface and parallel with road surface length direction,
Manifold 3 includes the outer tube that nests together and inner tube, and inner tube length is more than outer length of tube, the both ends of inner tube extend outer tube it
Outside.Inorganic heat-conducting medium layer 11 is filled between inner and outer pipes, outer tube uses DN65~DN150 seamless steel pipes.It is single to heat manifold 3
Length is 2~3m, can more series connection, the cavity between manifold inner and outer pipes is connected with branch tube cavity, forms closed inner cavity, inorganic
Heat-conducting medium will not be revealed.
Level header 1 and the inner tube of the manifold 3 of road-surface heating pipe group 2 are connected, and inner tube moulds method with level header 1 by steel
Orchid 9 connects, and it is circulation fluid 12 to flow through liquid, and inner tube uses DN32~DN80 seamless steel pipes；The heat transfer that level header 1 collects
It is heated to the inner tube of the manifold 3 of heating tube group, and by the inorganic heat-conducting medium layer 11 filled between the inner and outer tubes of manifold 3,
To the branch pipe 4 of road-surface heating pipe group 2, branch pipe 4 transfers heat to road surface, realizes the snow melt ice-melt on road surface heat transfer.
4 spacing of branch pipe is 300mm~400mm, is connected to the group number of heating manifold 3 determines according to actual conditions.Branch pipe 4 is adopted
With steel pipe material, caliber 32mm, wall thickness 3mm, length is that 2m~20m is differed, and can be determined according to road face width.Branch pipe 4 is vertical
Yu manifold 3, are layed in face lower part；4 inner wall of branch pipe is coated with the inorganic heat-conducting medium layer 11 that thickness is 8~12um.Branch pipe 4 with
Horizontal plane is laid in the state at 1~2 ° of the elevation angle in pavement concrete layer 10, and peak is 80~100mm away from ground.Branch pipe 4 is adopted
It is inserted directly into concrete cushion and is fixed with Steel bar rack.4 outer surface of branch pipe is provided with bituminous epoxy and glass wool cloth winding
Erosion resistant coating.
Underground pipe group 5 includes the more U-shaped underground pipes being set up in parallel.U-shaped underground pipe is list U or double U tube, caliber are
De32 or De25, tubing and pipe fitting are using high density polyethylene (HDPE) PE pipes.
The skill that inorganic heat-conducting medium in the present invention in inorganic heat-conducting medium layer 11 is used with Chinese patent CN1238721A
Art scheme is identical, and the inorganic heat-conducting medium has sale in the market, belongs to known technology, details are not described herein.The present invention
The heat transfer medium in heating tube group under road face is inorganic heat-conducting medium, and medium is after by thermal excitation along cavity wall by heating end thermal energy
It is transmitted to cold end.Heating tube group surface has good heat transfer property, and thermal resistance is almost nil, and heat transfer rate is fast, and heat exchange efficiency is high.
In the present invention, snow melt deicing device is made of, U-shaped U-shaped underground pipe group 5, level header 1, road-surface heating pipe group 2
Circulation power is provided by water pump 6 between underground pipe group 5 and level header, heat is transferred to road-surface heating pipe by way of heat transfer
Group 2.
Drilling construction is carried out in road or 13 both sides of airfield runway, drilling depth may be selected to be 80~200m, aperture 150
~200mm, drill interior embedded U-shaped underground pipe, filling circulation liquid 12 in underground pipe.The heat that U-shaped underground pipe group 5 contains underground
Pass through the circulating transfer of circulation fluid to level header 1.
U-shaped underground pipe is buried to be entered to drill, and manages interior injection circulation fluid, and the cycle for passing through circulation fluid extracts the heat of underground temperature field
Amount, U-shaped underground pipe are arranged in the both sides in the road face that needs to heat up, and pattern is list U or double U tube, the optional De32 of caliber or
De25, tubing and pipe fitting are using high density polyethylene (HDPE) PE pipes (pressure-bearing 1.6MPa).U-shaped underground pipe group is returned immediately after burying drilling
Sealing of hole is filled out, is backfilled using machinery, it is ensured that backfill compactness.Drilling is vertical direction, and depth can be according to project scale and engineering institute
Geological structure on ground is selected, generally 80~200m；The spacing of wells is 4~6m.
Level header 1 is installed on face both sides, is in parastate with road.Using PE materials, level header caliber range
For De40-De90, the caliber of rational level header can be set according to the quantity and header length of connection U-shaped underground pipe group.Water
Flat collector is attached with U-shaped underground pipe group using hot melting way.Before and after hot-melt adhesive paste, the dirt on fastening means heating surface is answered
It is cleaned with clean cotton；The connecting pin of hot-melt adhesive paste tubing should be cut vertically, be used in combination clean cotton to clean tubing and connected with pipe fitting
Dirt on face, marks insertion depth, strikes off its epidermis；Tubing and pipe heating finish, and should be disconnected tool rapidly, be used in combination
Uniform external force is inserted to mark depths；The pressurize of hot-melt adhesive paste, cooling time, should meet hot-melt adhesive paste tool production factory and pipe fitting,
The regulation of tubing factory mobile connection part or must not apply on connector external force in pressurize, cooling period.Level header connects
The quantity for connecing U-shaped underground pipe group is all determined according to the actual conditions of project.
Be equipped on level header 1 water circulating pump 6 in the inspection shaft 7 for being set to face both sides, thermometer, pressure gauge and
High water tank, inspection shaft 7 are brickwork construction.Thermometer and pressure gauge, which is arranged, can conveniently check the temperature and pressure of level header 1
Situation；High water tank can be that system carries out moisturizing, while the gas that generated in water system cyclic process can be discharged in time, reduce
The resistance of system operation.
Water pump 6 provides driving force for cycle of the circulation fluid between U-shaped underground pipe group 5 and level header 1.Water pump 6 is mounted on
On level header 1, it is attached by steel-plastic flange 9.The depth of burying of the selection of water pump 6 according to U-shaped underground pipe group, level set
The actual conditions that pipe 1 connects the projects such as the quantity of U-shaped underground pipe group are determined.
Level header 1 and the inner tube of road-surface heating pipe group 2 are attached using steel-plastic flange 9；And mould method in lengths of steel pipes steel
Copper ball valve 8 is installed in the both sides of orchid 9, with easy to clean, dismounting.
The construction technology of passive geothermal snow melt deicing device（As shown in Figure 5）, include the following steps：
A. underground pipe group and level header construction and installation：
1）Field investigation before pipeline engineering construction, should be investigated, and should grasp the feelings along pipeline according to construction
Condition and data：Site contour, landforms and various line conditions；Engineering geology and hydrogeologic data；Meteorological data；Engineering is used
Ground, communications and transportation and draining, water supply for construction, condition of power supply；
2) line setting determines pipeline change point, branch point and knick point according to drawing, and determines therefrom that pipeline moves towards, true
It sits in meditation on fixed point stake, marks pipe trench center and ditching depth, stretched with cotton rope along stake, spread lime；
3) drilling operating：Trepanning-reaming-drilling to the secondary inspecting hole-down tube-landfill in whole hole-it is closely knit-rise pull out casing；
4) Vertical pendulum tiltmeters group down tube, to ensure that down tube depth meets design requirement, it is necessary to accomplish to carry do not stop after finishing drilling bar it is vertical
That is down tube
5) drilling backfill, drilling finishes, under after complete U-shaped underground pipe group, backfilled using machinery, it is ensured that backfill compactness；
6) channel excavation and backfill, the construction of Vertical pendulum tiltmeters group road finish and through after the assay was approved, carrying out the excavation of horizontal channel,
It is laid with after installation is complete after level header and backfills in time；
7) hot-melt adhesive paste of pipeline, to ensure that construction quality, level header connection use hot melting way；Hot melt spigot-and-socket connection is divided into
Five stages：Warm-up phase, endothermic phase, heating plate take out stage, socket joint stage and cooling stage；
8) road face both sides build inspection shaft by laying bricks or stones, and install water circulating pump, thermometer, pressure gauge and the high water tank in portion disposed within；
B road-surface heating pipe group construction and installation
1）Road-surface heating pipe group（Manifold and branch pipe）Construction site is transported to by workshop processing finished product, is lifted using small crane, together
When by move flat car be responsible for heating tube group carry；
2）Subregion is put after road-surface heating pipe group is transported to scene, and specific placement area will be according to the setting of live flowing water Job partition
Position；
3）The adjustment of plane fixed point position is carried out using theodolite, Sopwith staff and steel ruler, and the adjustment of heating tube group elevation location uses level
Instrument, Sopwith staff instrument are checked in place, fixed to use banding fixed mode.
4）Heating tube group branch pipe is fixed in concrete cushion using Steel bar rack；
5）The inner tube and level header of road surface heating tube group manifold are connected using steel-plastic flange；It, will be buried by U-shaped after the completion of connection
The circulatory system of pipe group, level header and heating tube group inner tube composition carries out the water pressure test, it is ensured that the tightness of circulation line；And
Complete the backfill of groove.
The temperature of winter underground temperature field is about 12~16 DEG C（According to the latitude of project location and groundwater occurrence situation
Depending on）, i.e. only water circulating pump, such heat riser are fully complied with green the road face heating device of passive type using clean energy resource
Colour circle protects energy-efficient theory, has saved investment and administration fee.Pipeline only need to be disposably embedded to by the device before road construction
Underground, and the physical property on road surface is not influenced, do not influence service life.The PE tubing that U-shaped underground pipe group and level header use
Matter, have it is anticorrosive, anti-oxidant, service life is long, the high advantage of heat conductivility.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention
The limitation enclosed, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not
Need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.
Claims (10)
1. a kind of passive geothermal snow melt deicing device, characterized in that the road-surface heating pipe including being laterally embedded in shallow layer surface
Group is provided with the level header parallel with road surface length direction and the inbuilt underground pipe of vertical deep layer in required heating road surface both sides
Group, the road-surface heating pipe group and underground pipe group are connect with level header, and promising circulation fluid is installed on level header buried
Cycle between pipe group and level header provides the water pump of driving force；
The road-surface heating Guan Zuyou manifold and branch pipe composition, manifold are installed on the outside of road surface and parallel with road surface length direction,
Manifold includes the outer tube nested together and inner tube, and inorganic heat-conducting medium layer and inorganic heat-conducting medium layer are filled between inner and outer pipes
Both ends sealing, branch pipe and outer tube vertical connection, the cavity between manifold inner and outer pipes is connected with branch tube cavity, formed closed interior
Chamber；
Manifold inner tubes both ends are connect with level header respectively, and the inner tube of level header and road-surface heating pipe group manifold is connected,
The heat transfer that level header collects inorganic is led to heating tube group manifold inner tubes, and by what is filled between the inner and outer tubes of manifold
Thermal medium heats, the branch pipe of heat transfer to road-surface heating pipe group, and branch pipe transfers heat to face, realizes that the snow melt in road face is melted
Ice.
2. passive geothermal snow melt deicing device as described in claim 1, characterized in that the branch pipe wall is coated with thickness and is
8~12 μm of inorganic heat-conducting medium layer.
3. geothermal snow melt deicing device as claimed in claim 1 or 2 passive, characterized in that the branch pipe with horizontal plane
It is laid in pavement concretec layer in 1~2 ° of the state in the elevation angle, peak is 80~100mm away from ground.
4. passive geothermal snow melt deicing device as claimed in claim 3, characterized in that the branch pipe is solid using Steel bar rack
It is scheduled in concrete cushion.
5. passive geothermal snow melt deicing device as claimed in claim 4, characterized in that the branch tube outer surface is provided with ring
The erosion resistant coating of oxygen pitch and glass wool cloth winding.
6. geothermal snow melt deicing device as described in claim 1 passive, characterized in that the underground pipe group include more simultaneously
Arrange the U-shaped underground pipe of setting；The U-shaped underground pipe is list U or double U tube, and caliber is De32 or De25, and tubing and pipe fitting use
High density polyethylene (HDPE) PE pipes.
7. passive geothermal snow melt deicing device as described in claim 1, characterized in that the level header and U-shaped are buried
Pipe group is connected using hot melting way.
8. passive geothermal snow melt deicing device as described in claim 1, characterized in that level header connects U-shaped underground pipe
Group quantity is set according to header length.
9. passive geothermal snow melt deicing device as described in claim 1, characterized in that be equipped with and be set on level header
Water circulating pump, thermometer, pressure gauge and high water tank in the inspection shaft of road face both sides, inspection shaft are brickwork construction.
10. a kind of construction technology of geothermal snow melt deicing device passive as described in claim 1, characterized in that including following
Step：
A. underground pipe group and level header construction and installation：
1）Field investigation before pipeline engineering construction, should be investigated, and should grasp the feelings along pipeline according to construction
Condition and data：Site contour, landforms and various line conditions；Engineering geology and hydrogeologic data；Meteorological data；Engineering is used
Ground, communications and transportation and draining, water supply for construction, condition of power supply；
2) line setting determines pipeline change point, branch point and knick point according to drawing, and determines therefrom that pipeline moves towards, true
It sits in meditation on fixed point stake, marks pipe trench center and ditching depth, stretched with cotton rope along stake, spread lime；
3) drilling operating：Trepanning-reaming-drilling to the secondary inspecting hole-down tube-landfill in whole hole-it is closely knit-rise pull out casing；
4) Vertical pendulum tiltmeters group down tube, to ensure that down tube depth meets design requirement, it is necessary to accomplish to carry do not stop after finishing drilling bar it is vertical
That is down tube；
5) drilling backfill, drilling finishes, under after complete U-shaped underground pipe group, backfilled using machinery, it is ensured that backfill compactness；
6) channel excavation and backfill, the construction of Vertical pendulum tiltmeters group road finish and through after the assay was approved, carrying out the excavation of horizontal channel,
It is laid with after installation is complete after level header and backfills in time；
7) hot-melt adhesive paste of pipeline, to ensure that construction quality, level header connection use hot melting way；Hot melt spigot-and-socket connection is divided into
Five stages：Warm-up phase, endothermic phase, heating plate take out stage, socket joint stage and cooling stage；
8) road face both sides build inspection shaft by laying bricks or stones, and install water circulating pump, thermometer, pressure gauge and the high water tank in portion disposed within；
B. road-surface heating pipe group construction and installation
1）Road-surface heating pipe group is transported to construction site by workshop processing finished product, is lifted using small crane, while by mobile tablet
Vehicle is responsible for the carrying of heating tube group；
2）Subregion is put after road-surface heating pipe group is transported to scene, and specific placement area will be according to the setting of live flowing water Job partition
Position；
3）The adjustment of plane fixed point position is carried out using theodolite, Sopwith staff and steel ruler, and the adjustment of heating tube group elevation location uses level
Instrument, Sopwith staff instrument are checked in place, fixed to use banding fixed mode；
4）Heating tube group branch pipe is fixed in concrete cushion using Steel bar rack；
5）The inner tube and level header of road surface heating tube group manifold are connected using steel-plastic flange；It, will be buried by U-shaped after the completion of connection
The circulatory system of pipe group, level header and heating tube group inner tube composition carries out the water pressure test, it is ensured that the tightness of circulation line；And
Complete the backfill of groove.
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| CN2018202007367 | 2018-02-05 | ||
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| CN201820726129.4U Active CN208201567U (en) | 2018-02-05 | 2018-05-16 | Passive geothermal snow melt deicing device |
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Cited By (4)
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| CN110318314A (en) * | 2019-05-23 | 2019-10-11 | 中国中元国际工程有限公司 | Fluid heats stringing construction method under road snow-melting system road surface |
| CN110373970A (en) * | 2019-07-29 | 2019-10-25 | 湖北工业大学 | A kind of overhead road surface underground heat ice-melting structure and its construction method |
| CN112048963A (en) * | 2020-09-05 | 2020-12-08 | 唐山公路建设总公司 | Highway anti-settlement system |
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| CN108486989A (en) * | 2018-02-05 | 2018-09-04 | 山东亚特尔集团股份有限公司 | Passive geothermal snow melt deicing device and its construction technology |
| CN111426085B (en) * | 2020-05-13 | 2021-06-22 | 西南科技大学 | Vertical type ground heat exchanger for preventing and treating frost heaving of roadbed |
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| CN208201567U (en) | 2018-12-07 |
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