CN108286840A - Geothermal heat pump for preventing Frozen Area roadbed frost damage and implementation - Google Patents
Geothermal heat pump for preventing Frozen Area roadbed frost damage and implementation Download PDFInfo
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- CN108286840A CN108286840A CN201810190025.0A CN201810190025A CN108286840A CN 108286840 A CN108286840 A CN 108286840A CN 201810190025 A CN201810190025 A CN 201810190025A CN 108286840 A CN108286840 A CN 108286840A
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- compressor
- heat pump
- release section
- hot arc
- heat release
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/06—Heat pumps characterised by the source of low potential heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
Abstract
An embodiment of the present invention provides a kind of geothermal heat pumps and implementation for preventing Frozen Area roadbed frost damage.The device includes：Condensation heat release section positioned at frost heave stratum is located at the evaporation collection hot arc of good ground, and compressor, capillary, device for drying and filtering and intelligent controller more than earth's surface；Condensation heat release section and evaporation integrate hot arc as screw type copper coil pipe; it is recycled by the gas-liquid two-phase of refrigerant under the driving of compressor and the geothermal energy of good ground is transferred to frost heave stratum, intelligent controller is controlled heat supply temperature in fixed range by controlling the shutdown of compressor and starting.The present invention is the independent heat supply unit of vertical type columnar, laying mode is flexible, heat supply temperature is high, compensate for the deficiency that existing roadbed frozen prevention measures are confined to passivity protection, make full use of the geothermal energy resource that Frozen Area is abundant, heat is inputted to compensate nature heat waste to roadbed in real time in winter, and season matching is good, and calorifics regulation and control are efficient.
Description
Technical field
The present invention relates to subgrade engineering technical field more particularly to a kind of ground for preventing Frozen Area roadbed frost damage
Source heat pump device and implementation.
Background technology
China's seasonal frozen ground is mainly distributed on each provinces and regions of North of Yangtze River, accounts for about the 53.5% of national territorial area.Season is frozen
The heat exchange of the subgrade engineering in soil area, atmospheric environment and roadbed makes the positive and negative variation of soil temperature Growth season, soil
The solid-liquid phase change of middle water generating period therewith, and then generate apparent frost heave and thaw collapse phenomenon.Especially Heilongjiang Province south,
The ground such as northeastern Inner Mongolia, In Northwest Jilin, up to 3 meters or more, subgrade engineering faces the maximum frozen depth in winter extensively
It serious winter frost heave and spring break-up emits the freeze injury phenomenon of the series such as mud.Therefore, rationally effective roadbed frost damage control is arranged
Apply be China Frozen Area road project one of underlying issue.
Roadbed frozen prevention measures are based primarily upon three soil property, water and temperature element expansion, and wherein soil property and water are current
Prevention and control emphasis uses anti-freeze expansion filler and control moisture.Actual monitoring show to improve roadbed filling and waterproof and drain measure for
Slow down frost heave and play positive effect, but can not still be inherently eliminated frost heaving.The reason is that, in roadbed and air
In the heat transfer process of environment, ground surface soil is substantially at opposite high temperature heat source state in winter, since the temperature difference drives oneself of heat transfer
Hair property and irreversibility, the heat loss of roadbed in winter and cooling frost heave are uncontrollable.In present high-level highway, high speed
Under railway Large-scale programming and the form of construction, existing roadbed frozen prevention measures cannot fully meet requirement, therefore, have
Necessity research and development antifreezing expansion effect better method and measure.
Cold area's roadbed freeze-harm is substantially caloic exchange and transport phenomena under outside air temperature and load action, roadbed freeze-harm
Be in the nature excess calories loss after effects of reduced temperature.Therefore, it on the basis of guarded drainage and improvement soil property measure, creates and controls
It is to cope with the ultimate measure of roadbed frost damage to make rational temperature range.But it is also lacked at present to temperature this key factor
Control measure.Therefore, it is Frozen Area subgrade engineering to develop heat transfer efficiency height and the good temperature regulation measure of season matching
One of Main way of development.
According to heat transfer principle, roadbed winter, heat-staple realize included two approach, first, reduce heat output, i.e., it is existing
The Insulations such as some roadbed stratum thermal insulation board and boundary thermal insulation berm, mechanism are increase roadbed thermal boundary resistance, belong to passive
Property protection；Second is that increasing heat input, i.e. heating measures, mechanism is to realize the heat to low temperature roadbed by a high temperature heat source
Amount transmission belongs to initiative maintenance.Currently, the existing use of Insulation, but due to the presence of temperature difference between roadbed and air,
Heat loss experience can not possibly completely eliminate.Therefore, effective temperature control needs of Frozen Area roadbed further carry out in winter
Heat supplement in real time is needed to provide an external heat source in cold season, be conducted heat to roadbed to compensate heat waste, this substantially belongs to
One for heat problem.
In Heat Supply Engineering field, in many artificial and natural heat sources, geothermal energy is a kind of contains in the day of earth interior
Right heat compares other heat sources, and there is hot-fluid to stablize and continuous significant advantage.Particularly with shallow layer surface, earth's surface stratum phase
When in a huge solar thermal collector, having collected 47% solar energy.Usually, in earth's surface number meter~20 meter hereinafter,
Formation temperature will not just be influenced by factors such as region, seasons substantially, referred to as normal temperature layer, be maintained at 10~15 DEG C throughout the year, tool
It is distributed extensive, large storage capacity, stablizes the advantages such as lasting, production technique difficulty is low.
China's geothermal energy distribution has apparent regularity and zonality, western part, the west and south, southeastern coast, North China and east
There is high-grade geothermal distribution in backlands area, has certain repeatability in geographical distribution with seasonal frozen ground.Currently, geothermal utilization is
The popular direction of utilization of new energy resources is mainly directed towards the fields such as living environment's adjusting and commercial Application, has developed various informative ground
Heat energy utilization method and technology.But it is limited to differences of disciplines, the geothermal energy utilization towards the application of roadbed environmental Kuznets Curves is then not yet
It is related to.
Therefore, the geothermal energy distribution occasion based on China Frozen Area and geothermal utilization technology ripe at present, underground heat
It can dive with good development condition and application using in the frost failure prevention and control field of China Frozen Area subgrade engineering
Power.
Invention content
The embodiment provides a kind of geothermal heat pumps and reality for preventing Frozen Area roadbed frost damage
Applying method compensates nature heat waste that roadbed can be actively entered heat in real time in winter, realize to roadbed frost heaving into
Row prevention.
To achieve the goals above, this invention takes following technical solutions：
One aspect of the present invention provides a kind of geothermal heat pump for Frozen Area roadbed frost damage.
A kind of geothermal heat pump for preventing Frozen Area roadbed frost damage that the embodiment of the present invention provides, it is special
Sign is that the device includes：The ground source heat pump line being embedded under earth's surface, be placed in steel holder in earth's surface, compressor, capillary,
Device for drying and filtering and intelligent controller, the steel branch are placed on the surface of the ground source heat pump line, and the compressor is fixed
In the upper layer of the steel holder, the capillary and the device for drying and filtering are fixed on the lower layer of the steel holder, described
Capillary is connect with the device for drying and filtering, and the intelligent controller is electrically connected with the compressor；
The part that the ground source heat pump line is embedded in frost heave stratum is condensation heat release section, and the part for being embedded in good ground is
Evaporation collection hot arc forms closed follow between the condensation heat release section, compressor, evaporation collection hot arc, capillary, device for drying and filtering
Refrigerant is discharged into the condensation heat release section by the control compressor and is condensed into liquid by loop back path, the intelligent controller,
And the control compressor sucks the gaseous refrigerant of the sweat cooling section, and the temperature of seasonal frozen ground layer is regulated and controled reasonable
In range.
Preferably, which further includes：Protection shell, heat emission hole, temperature sensor and power supply, the protection shell are placed in
The outside of the steel holder, the heat emission hole are placed on a side of the protection shell, and the temperature sensor is placed in
Frost heave stratum on the outside of the ground source heat pump line, the power supply are connect with the intelligent controller and the compressor；
It is arranged on the side of heat emission hole in the protection shell, the intelligent controller, the intelligent controller position is set
In the lower section of the heat emission hole；
The temperature sensor is attached with the intelligent controller by conducting wire, the target area for will detect
Temperature be sent to the intelligent controller；
The circuit interface of the power supply and the compressor, the intelligent controller circuit interface between led using power supply
Line is sequentially docked, and carries out insulation processing.
Preferably, which further includes：Refrigerant, the refrigerant are located at the condensation heat release section, compressor, evaporation collection
It is formed between hot arc, capillary, device for drying and filtering in closed circulation loop；
The refrigerant switchs to gaseous state in evaporation collection hot arc by liquid, and the gaseous refrigerant is inhaled by the compressor
Enter rear boil down to high temperature and high pressure gaseous refrigerant, the high temperature and high pressure gaseous refrigerant is condensed into liquid into the condensation heat release section
State simultaneously transfers thermal energy to surrounding formation, and the liquid refrigerant is drawn by the capillary and flows through the device for drying and filtering again
One cycle is completed, the refrigerant recycles next time since the device for drying and filtering reenters the evaporation collection hot arc.
Preferably, the ground source heat pump line includes：The shell of PVC base tubes, copper pipe and position limiting clamp, the ground source heat pump line is
The PVC base tubes of a piece preset length, the limit are folded between condensation heat release section and evaporation collection hot arc, and the copper pipe is described
Columnar screw type coil pipe is wound up as in PVC base tubes；
The ground source heat pump line is divided into：Heat release section and evaporation collection hot arc are condensed, the evaporation collection hot arc is put in the condensation
The lower section of hot arc；
Between the entrance and the outlet of the compressor of the condensation heat release section gas welding overlap joint, institute are carried out using the copper pipe
It states exporting for condensation heat release section and carries out gas welding overlap joint using the copper pipe between the entrance of the device for drying and filtering, in the future
It is condensed into liquid from the high temperature and high pressure gaseous refrigerant cooling of the compressor, and the heat discharged in cooling condensation process is passed
It is handed to the frost heave stratum of surrounding, roadbed is offset in real time and is lost to the heat transfer of atmospheric environment；
Between the entrance and the outlet of the capillary of the evaporation collection hot arc gas welding overlap joint, institute are carried out using the copper pipe
State exporting for evaporation collection hot arc utilizes the copper pipe to carry out gas welding overlap joint, the evaporation thermal-arrest between the entrance of the compressor
Section is in good ground, and the liquid refrigerant is evaporated gasification by the geothermal energy for collecting earth's surface deep good ground
The heat on Vapor recovery unit stratum；
The position limiting clamp, the height for adjusting the condensation heat release section and the evaporation collection hot arc, meets different depth
The heat demand on frost heave stratum；
The copper pipe is divided into two parts in the PVC base tubes, respectively to preset the spiral that spacing is coiled into vertical type columnar
Type coil pipe is placed in the condensation heat release section and evaporation collection hot arc, and the circulation loop of reserved preset length；
The copper pipe is additionally operable to connect the condensation heat release section, compressor, evaporation collection hot arc, capillary, device for drying and filtering,
Overlapped welding manner is carried out using by the copper pipe, in the condensation heat release section, compressor, evaporation collection hot arc, capillary, is done
Closed circulation loop is formed between dry filter.
Preferably, the entrance of the compressor with it is described evaporation collection hot arc outlet be connected, the outlet of the compressor and
The entrance of the condensation heat release section is connected；
The compressor is connect with the intelligent controller, the continuous cycle for driving the refrigerant, the compression
Machine consumes electric energy under the control of the intelligent controller, sucks the gaseous refrigerant that the evaporation collection hot arc generates, and
By mechanical work by the gaseous refrigerant boil down to high temperature and high pressure gaseous refrigerant, then the high pressure gaseous freezed
Agent is discharged into the condensation heat release section.
Preferably, the entrance of the device for drying and filtering is connected with the outlet of the condensation heat release section, the device for drying and filtering
Outlet be connected with the entrance of the capillary；
The device for drying and filtering avoids the moisture in circulation line and dirt for excluding the moisture in circulation line and dirt
Object invades the compressor or is condensed into ice and passage.
Preferably, the entrance of the capillary is connected with the outlet of the device for drying and filtering, the outlet of the capillary with
The entrance of the evaporation collection hot arc is connected；
The liquid refrigerant is cooled down for throttling, is depressurized to gas-liquid two-phase mixing by the capillary
It is saturated damp steam state.
Preferably, the intelligent controller, for the refrigeration control temperature and return difference temperature by presetting the compressor
The compressor is controlled；
The intelligent controller receives the formation temperature that the temperature sensor is sent, when the formation temperature reaches default
Refrigeration control temperature when, the intelligent controller cuts off the power supply and allows the compressor shutdown, waits for that the formation temperature increases
When adding to the return difference temperature, the intelligent controller restores the power supply, allows the compressor to be again started up and freezes.
Another aspect of the present invention provides a kind of for preventing the geothermal heat pump of Frozen Area roadbed frost damage
Implementation,
A kind of reality for preventing the geothermal heat pump of Frozen Area roadbed frost damage that the embodiment of the present invention provides
Applying method, which is characterized in that the implementation includes：
Determine the frost heave depth bounds that seasonal frozen ground layer is covered under roadbed；
Measure the thermal physical property parameter and thermic load on seasonal frozen ground stratum；
Determine the design parameters such as height, diameter and the laying spacing of geothermal heat pump；
Drilling construction installs ground source heat pump line.
Preferably, the design parameters such as the height of the determination geothermal heat pump, diameter and laying spacing, including：
According to the frost heave depth bounds and thermic load of seasonal frozen ground roadbed, determine the ground source heat pump line installation position and
Heating range, respectively determine it is described evaporation collection hot arc and it is described condensation heat release section in copper pipe model and length, determine described in
The integral diameter and height of heat release section and the condensation heat release section are condensed, and determines the laying spacing of the ground source heat pump line.
The embodiment of the present invention passes through in seasonal frozen ground it can be seen from the technical solution that embodiments of the invention described above provide
Frost failure region setting under area's roadbed extends to the ground source heat pump line of earth's surface, will by the evaporation collection hot arc of ground source heat pump line
Liquid refrigerant is evaporated endothermic gasification, collects the geothermal energy of earth's surface deep good ground, then, is sucked and is steamed using compressor
The gaseous refrigerant that hair collection hot arc generates, and boil down to high temperature and high pressure gaseous refrigerant, will be compressed by condensing heat release section later
The high temperature and high pressure gaseous refrigerant cooling that machine generates is condensed into liquid, and discharges the frost heave stratum that thermal energy passes to surrounding, in real time
Offset roadbed to the heat transfer of atmospheric environment lose, finally, by the throttling process of capillary make liquid refrigerant again into
Enter sweat cooling section, be thus continued for the collection, promotion and release of geothermal energy, roadbed temperature is maintained one compared with Gao Shui
It is flat, to weaken frost heave degree, when the temperature of roadbed material is higher than solidification point, you can eliminate frost heaving.The present invention utilizes
Geothermal energy in stratum efficiently controls the heat budget state of roadbed in winter, and heating efficiency is high；Structural shape is vertical
Column, compact-sized, laying mode is flexible, meets the dispersed distribution characteristics of frost failure, has preferable applicability.
The additional aspect of the present invention and advantage will be set forth in part in the description, these will become from the following description
Obviously, or practice through the invention is recognized.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill of field, without having to pay creative labor, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is provided in an embodiment of the present invention a kind of for preventing the geothermal heat pump of Frozen Area roadbed frost damage
Structural schematic diagram；
Fig. 2 is provided in an embodiment of the present invention a kind of for preventing the geothermal heat pump of Frozen Area roadbed frost damage
The side view of earth's surface above section；
Fig. 3 is provided in an embodiment of the present invention a kind of for preventing the geothermal heat pump of Frozen Area roadbed frost damage
Section A-A schematic diagram；
Fig. 4 is provided in an embodiment of the present invention a kind of for preventing the geothermal heat pump of Frozen Area roadbed frost damage
Section B-B schematic diagram；
Fig. 5 is provided in an embodiment of the present invention a kind of for preventing the geothermal heat pump of Frozen Area roadbed frost damage
The process chart of implementation；
Wherein, 1-condensation heat release section, 2-evaporation collection hot arcs, 3-compressors, 4-capillaries, 5-devices for drying and filtering,
6-steel holders, 7-bolts, 8-protection shells, 9-heat emission holes, 10-intelligent controllers, 11-copper pipes, 12-PVC bases
Pipe, 13-position limiting clamps, 14-temperature sensors, 15-temperature sensor leads, 16-power leads, 17-refrigerants, 18-
Power supply.
Specific implementation mode
Embodiments of the present invention are described below in detail, the example of the embodiment is shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the present invention, and is not construed as limiting the claims.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singulative " one " used herein, " one
It is a ", " described " and "the" may also comprise plural form.It is to be further understood that is used in the specification of the present invention arranges
It refers to there are the feature, integer, step, operation, element and/or component, but it is not excluded that presence or addition to take leave " comprising "
Other one or more features, integer, step, operation, element, component and/or their group.It should be understood that when we claim member
Part is " connected " or when " coupled " to another element, it can be directly connected or coupled to other elements, or there may also be
Intermediary element.In addition, " connection " used herein or " coupling " may include being wirelessly connected or coupling.Wording used herein
"and/or" includes any cell of one or more associated list items and all combines.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art
Language and scientific terminology) there is meaning identical with the general understanding of the those of ordinary skill in fields of the present invention.Should also
Understand, those terms such as defined in the general dictionary, which should be understood that, to be had and the meaning in the context of the prior art
The consistent meaning of justice, and unless defined as here, will not be with idealizing or the meaning of too formal be explained.
For ease of the understanding to the embodiment of the present invention, done further by taking several specific embodiments as an example below in conjunction with attached drawing
Explanation, and each embodiment does not constitute the restriction to the embodiment of the present invention.
Embodiment one
An embodiment of the present invention provides a kind of geothermal heat pump and implementations for preventing Frozen Area roadbed frost damage
Method can be actively entered heat to compensate nature heat waste, to realize prevention roadbed frost damage phenomenon to roadbed in real time in winter.
The one side of the embodiment of the present invention provides a kind of earth source heat pump dress for preventing Frozen Area roadbed frost damage
It sets.
A kind of structure for preventing the geothermal heat pump of Frozen Area roadbed frost damage provided in an embodiment of the present invention
Schematic diagram is as shown in Figs 1-4, which includes：Condense heat release section 1, evaporation collection hot arc 2, compressor 3, capillary 4, dry filter
Device 5, steel holder 6, bolt 7, protection shell 8, heat emission hole 9, intelligent controller 10, copper pipe 11, PVC base tubes 12, position limiting clamp 13,
Temperature sensor 14, temperature sensor lead 15, power lead 16, refrigerant 17 and power supply 18.Copper pipe 11 is along a PVC base
Pipe 12 is wound up as columnar screw type coil pipe and constitutes ground source heat pump line, and ground source heat pump line, which is embedded under earth's surface, to be divided into：Condense heat release section 1
Collect hot arc 2 with evaporation；Compressor 3, capillary 4, device for drying and filtering 5, steel holder 6, protection shell 8 and intelligent controller 10 are set
In in earth's surface, protection shell 8 is placed in the outside of steel holder 6, and steel holder 6 is placed in the surface of ground source heat pump line, compressor 3
It is secured by bolts in the upper layer of steel holder 6, capillary 4 and device for drying and filtering 5 are secured by bolts under steel holder 6
Layer；Intelligent controller 10 is electrically connected with compressor 3, temperature sensor 14, and temperature sensor 14 is placed in by ground source heat pump line
In frost heave stratum.
The device is arranged in the protection shell on the side of heat emission hole, and the intelligent controller is arranged；The temperature passes
Sensor is attached with the intelligent controller by conducting wire, for the temperature of the target area detected to be sent to the intelligence
It can controller；The circuit interface of the power supply and the compressor, the intelligent controller circuit interface between use power supply
Conducting wire is sequentially docked, and carries out insulation processing.
The particular content of each critical piece of the device is as follows：
(1) ground source heat pump line
Ground source heat pump line includes：It condenses heat release section, evaporate collection hot arc, copper pipe and position limiting clamp, outside the ground source heat pump line
Shell is the PVC base tubes of a preset length, and the evaporation collection hot arc is folded in the lower section of the condensation heat release section, the limit
Between the condensation heat release section and evaporation collection hot arc, the copper pipe is wound up as columnar screw type in the PVC base tubes
Coil pipe.
Gas welding overlap joint is carried out using the copper pipe between the entrance and the outlet of the compressor of condensation heat release section, it is described cold
Gas welding overlap joint is carried out using the copper pipe between the outlet and the entrance of the device for drying and filtering of solidifying heat release section, for institute will to be come from
The high temperature and high pressure gaseous refrigerant cooling for stating compressor is condensed into liquid, and extremely by the heat transfer discharged in cooling condensation process
The frost heave stratum of surrounding is offset roadbed and is lost to the heat transfer of atmospheric environment in real time.
Between the entrance and the outlet of the capillary of evaporation collection hot arc gas welding overlap joint, the steaming are carried out using the copper pipe
Between the outlet and the entrance of the compressor of hair collection hot arc gas welding overlap joint, the evaporation Ji Reduanchu are carried out using the copper pipe
In good ground, the liquid refrigerant is evaporated gasification and absorbed by the geothermal energy for collecting earth's surface deep good ground
The heat of good ground.
Position limiting clamp, the height for adjusting the condensation heat release section and the evaporation collection hot arc, meets different depth frost heave
The heat demand on stratum.
Copper pipe is divided into two parts in the PVC base tubes, respectively to preset the screw type disk that spacing is coiled into vertical type columnar
Pipe is placed in the condensation heat release section and evaporation collection hot arc, and the circulation loop of reserved preset length.
Copper pipe is additionally operable to connect the condensation heat release section, compressor, evaporation collection hot arc, capillary, device for drying and filtering, utilizes
The copper pipe is subjected to overlapped welding manner, collects hot arc, capillary, dried in the condensation heat release section, compressor, evaporation
Closed circulation loop is formed between filter.
(2) compressor
The entrance of compressor is connected with the outlet of the evaporation collection hot arc, the outlet of the compressor and the condensation heat release
The entrance of section is connected.
Compressor is connect with the intelligent controller, and the continuous cycle for driving the refrigerant, the compressor exists
Electric energy is consumed under the control of the intelligent controller, sucks the gaseous refrigerant that the evaporation collection hot arc generates, and pass through
Mechanical work is arranged by the gaseous refrigerant boil down to high temperature and high pressure gaseous refrigerant, then by the high temperature and high pressure gaseous refrigerant
Enter the condensation heat release section.
(3) device for drying and filtering
The entrance of device for drying and filtering is connected with the outlet of the condensation heat release section, the outlet of device for drying and filtering and the capillary
The entrance of pipe is connected.
Device for drying and filtering avoids moisture and dirt in circulation line from invading for excluding the moisture in circulation line and dirt
Enter the compressor or is condensed into ice and passage.
(4) capillary
The entrance of capillary is connected with the outlet of the device for drying and filtering, the outlet of the capillary and the evaporation thermal-arrest
The entrance of section is connected.
Capillary is for throttling, the saturation for gas-liquid two-phase mixing that the liquid refrigerant is cooled down, is depressurized to
Damp steam state.
(5) intelligent controller
Intelligent controller, for the refrigeration control temperature and return difference temperature by the default compressor to the compressor
It is controlled.
Intelligent controller receives the formation temperature that the temperature sensor is sent, when the formation temperature reaches preset system
When cold control temperature, the intelligent controller cuts off the power supply and allows the compressor shutdown, waits for that the formation temperature increases to
When the return difference temperature, the intelligent controller restores the power supply, allows the compressor to be again started up and freezes.
The embodiment of the present invention is between the condensation heat release section, compressor, evaporation collection hot arc, capillary, device for drying and filtering
Closed circulation loop is formed, refrigerant is discharged into the condensation heat release section condensation by intelligent controller by controlling the compressor
The gaseous refrigerant of the sweat cooling section is sucked for liquid, and the control compressor, by the temperature tune of seasonal frozen ground layer
Control is in the reasonable scope.It is formed between condensation heat release section, compressor, evaporation collection hot arc, capillary, device for drying and filtering closed
Specific works mechanism in circulation loop is：
(a) throttling process, the liquid refrigerant that condensation heat release section generates cool down through capillary adiabatic throttling, are depressurized to gas
The saturation damp steam state of liquid two-phase mixtures.
(b) entrance of evaporation process, saturation damp steam state refrigerant is located at the evaporation collection hot arc of good ground, passes through steaming
Endothermic process is sent out, the geothermal energy of surrounding is collected, compressor is inhaled into after being evaporated to vapor state refrigerant.
(c) compression process, compressor are high by the gaseous refrigerant boil down to of sucking by mechanical work under supply of electric power
The superheated vapor refrigerant of warm high pressure, i.e., by the higher high-grade thermal energy of low-grade geothermal energy conversion temperature.
(d) condensation process, superheated vapor refrigerant finally enter condensation heat release section, freeze around under temperature difference driving effect
Swollen stratum discharges heat, and is condensed into liquid refrigerant, is again introduced into capillary, completes heating cycle.
The above process is the operational process of ground source heat pump line, is achieved in the real-time heat to Frozen Area frost heave stratum
Amount input.
The another aspect of the embodiment of the present invention provides a kind of earth source heat pump for preventing Frozen Area roadbed frost damage
The implementation of device.It is as follows：
S410：Determine the frost heave depth bounds that seasonal frozen ground layer is covered under roadbed.
In winter season is determined in conjunction with geology radar survey by laying the measurement method of thermometer hole and deformation monitoring hole
The frost heave depth bounds of frozen soil.
S420：Measure the thermal physical property parameter and thermic load on seasonal frozen ground stratum.
By geo-thermal response test, the thermal physical property parameter on stratum is determined, calculate the thermic load of seasonal frozen ground roadbed.
S430；Determine the design parameters such as height, diameter and the laying spacing of geothermal heat pump.
According to the frost heave depth bounds and thermic load of seasonal frozen ground roadbed, determine the ground source heat pump line installation position and
Heating range, respectively determine it is described evaporation collection hot arc and it is described condensation heat release section in copper pipe model and length, determine described in
The integral diameter and height of heat release section and the condensation heat release section are condensed, and determines the laying spacing of the ground source heat pump line.
S440；Drilling construction installs ground source heat pump line.
Using the mechanical drilling mode pore-forming of no-dig technique, by the evaporation collection hot arc of ground source heat pump line and condensation heat release section embedment
In hole, the backfill of hole gap is closely knit after the completion of laying.
Embodiment two
This embodiment offers a kind of for preventing the geothermal heat pump and implementation of Frozen Area roadbed frost damage,
Its specific implementation structure is as shown in Figs. 1-3, can specifically include following structure：
It is embedded in the ground source heat pump line of underground, including：Positioned at the condensation heat release section on frost heave stratum and positioned at the steaming of good ground
Hair collection hot arc.The condensation heat release section and evaporation collection hot arc are the screw type copper pipe of vertical type columnar, respectively by certain length
Copper pipe is process along a PVC base tubes winding.
The entrance of condensation heat release section is connected with compressor outlet, and effect is will to freeze from the high pressure gaseous of compressor
Agent cooling is condensed into liquid, and the condenser heat of release is transferred to frost heave stratum around.
Evaporation collection hot arc is the collector of good ground heat, the entrance of sweat cooling section and the outlet phase of capillary
Even, effect is that the liquid refrigerant for feeding capillary is evaporated to gaseous state, thus absorbs the geothermal energy of surrounding.
Compressor, capillary, device for drying and filtering, steel holder, intelligent controller more than earth's surface and protection shell.
Compressor is the drive component of vapor-compression refrigerant cycle system, the outlet phase of suction port of compressor and evaporation collection hot arc
Even, effect is to suck the gaseous refrigerant of sweat cooling section by consuming certain electric energy, and by mechanical work by gaseous state system
Thus cryogen boil down to high temperature and high pressure gaseous refrigerant promotes thermal energy quality, and drives the continuous cycle of refrigerant.
Capillary is a throttling set, and the entrance of capillary is connected with the outlet of device for drying and filtering, and effect is by liquid
The pressure of refrigerant is reduced to evaporating pressure by condensing pressure, and a part of liquid refrigerant is converted into steam.
Device for drying and filtering entrance is connected with condensator outlet, for excluding the moisture in refrigeration cycle and dirt, such as oil
Dirt, iron filings etc. prevent it from invading compressor or are condensed into ice and passage.
Steel holder by it is more than earth's surface compressor, capillary, intelligent controller and earth's surface condensation heat release section below and
Evaporation collection hot arc is fixed as a set of whole vertical type columnar device.
Intelligent controller can control the startup and shutdown of compressor with this with default control temperature and return difference temperature.Work as temperature
When the seasonal frozen ground temperature value of a certain position of degree Sensor monitoring reaches control temperature, Intelligent temperature controller can cut off the power
Supply allows compressor shutdown, and when temperature is reduced to return difference temperature, Intelligent temperature controller, which can restore power supply supply, allows compressor
It is again started up to the heat supply of frost heave stratum, in the reasonable scope by the regulation and control of seasonal frozen ground temperature.
The making step of ground source heat pump line includes：
(a) processing of condensation heat release section 1 and evaporation collection hot arc 2：Along the upper and lower part of a PVC base tube 12, respectively
The copper pipe 11 of certain length and diameter is coiled into the screw type coil pipe of vertical type columnar with a determining deviation, and reserves sufficient length
Circulation loop.
(b) condensation heat release section 1 and evaporation collection hot arc 2 are fixed within the scope of preset height respectively with position limiting clamp 13.
(c) double-deck steel holder 6 is built, compressor 3 is fixed on to the upper layer of steel holder 6, capillary using bolt 7
4 and device for drying and filtering 5 be mounted on steel holder 6 lower layer, the top of PVC base tubes 12 is fixed on steel holder 6 by bolt 7
Bottom end.
(d) the inlet copper pipe 11 for condensing heat release section 1 is connected with the outlet of compressor 3, the entrance of compressor 3 and evaporation
The exit copper pipe 11 for collecting hot arc 2 is connected, and the inlet copper pipe 11 of evaporation collection hot arc 2 is connected with the outlet of capillary 4, capillary
4 entrance is connected with the outlet of device for drying and filtering 5,11 phase of exit copper pipe of the entrance and condensation heat release section 1 of device for drying and filtering 5
Even, the circulation loop of closure is consequently formed, the connected position is all made of welded seal.
(e) closed system processed in step (d) is vacuumized, refrigerant is perfused to compressor 3 using system vacuum
17。
(f) protection shell 8 is installed in the outside of steel holder 6, heat emission hole 9 is drilled on a side of protection shell 8.
(g) it is embedded in intelligent controller 10 on protection shell, the temperature sense module of intelligent controller 10 is passed by temperature
Sensor conducting wire 15 is connect with temperature sensor 14, and the power output end of intelligent controller 10 passes through one section of power lead 16 and compression
Machine 3 connects electric box connection, and the power input power supply 18 of Intelligent temperature controller 7 is connected by one section of power lead 16.
The present invention application effect be：The ground source heat pump line is installed in roadbed frost damage disease position, in winter, roadbed by
Excessive heat waste is generated in the diabatic process of ground vapour temperature difference driving, when frost heave occurs in cooling, starts ground source heat pump line.First, it steams
The evaporation endothermic gasification of liquid refrigerant 17, collects the geothermal energy of earth's surface deep good ground in hair collection hot arc 2；Then, it compresses
The gaseous refrigerant 17 that the sucking evaporation collection hot arc 2 of machine 3 generates, and boil down to high temperature and high pressure gas, the low product that thus will be collected
Position geothermal energy is promoted to high-grade thermal energy；Later, the high-temperature high-pressure refrigerant 17 generated compressor 3 by condensing heat release section 1
Gas cooling is condensed into liquid, and geothermal energy is passed to frost heave stratum by condensation process, offsets heat of the roadbed to atmospheric environment in real time
Amount transmits loss；Finally, so that liquid refrigerant 17 is reentered sweat cooling section 2 by the throttling process of capillary 4, thus hold
The collection, promotion and release of geothermal energy are carried out continuously.Ground temperature is passed through temperature by the temperature sensor 14 in frost heave stratum in real time
Sensor conductor 15 feeds back to intelligent controller 7, and intelligent controller 7 is adjusted according to preset control temperature and return difference temperature
Roadbed temperature is maintained a higher level, to weaken frost heave degree, when roadbed material by the shutdown and startup of compressor 3 with this
When the temperature of material is higher than solidification point, you can eliminate frost heaving.
The implementation of the embodiment of the present invention specifically carries out according to the following steps：
(a) the frost heave depth bounds that seasonal frozen ground layer is covered under roadbed are determined.
In 12~March by the measured data of thermometer hole and deformation monitoring hole, provided in conjunction with the image of geology radar survey
Material determines that the maximum frost heave depth of seasonal frozen ground is 1.2m.
(b) thermal physical property parameter and thermic load on seasonal frozen ground stratum are measured.
The value range of the parameters such as thermal capacity and the thermal coefficient on stratum is determined by the geo-thermal response test at scene, sets season
The modification scope of frozen soils temperature is saved, the winter thermic load of seasonal frozen ground roadbed is calculated.
(c) design parameters such as height, diameter and the laying spacing of geographical heat pump pipe are determined.
According to the frost heave depth bounds and thermic load of seasonal frozen ground roadbed, installation position and the heat supply of earth source heat pump pipe are determined
Range determines evaporation collection hot arc and condenses the model and length of heat release section copper pipe, condenses the integral diameter and height of heat release section respectively
Degree takes 110mm and 1.2m respectively, and the integral diameter and height of evaporation collection hot arc take 110mm and 5m respectively, to prevent drilling from influencing
The laying spacing of roadbed military service performance, ground source heat pump line takes 3.0m.
(d) drilling construction installs ground source heat pump line.
Drilling construction is carried out using drilling machine, Hole deviation should not exceed 0.5%；After pore-forming, by the steaming of ground source heat pump line
In hair collection hot arc and condensation heat release section embedment pore-forming, the backfill of hole gap is closely knit after the completion of laying；It is connected to power supply supply, you can throw
Enter operation.
Compared with the prior art, the present invention has the following advantages：
(1) frozen prevention measures, the present invention such as existing soil improvement, guarded drainage, thermal insulation material is compared to may be implemented in the winter
Season supplements the real-time heat of roadbed, compensates for the passivity protective mechanism of existing measure, more effectively controls roadbed in the winter
The heat budget state in season, anti-freeze expansion mechanism are more effectively and advanced.
(2) China's geothermal energy resource and frozen soil have a preferable consistency in Regional Distribution, geothermal energy resource is inexhaustible,
Nexhaustible, hot-fluid is stable and continuous.The present invention is based on ground source heat pump technologies, belong to new energy use technology, in cold area roadbed
There is huge application advantage in engineering.
(3) present invention directly carries out collection, promotion and the release of geothermal energy by the evaporation of refrigerant, compression and condensation,
The thermal energy improved to frost heave stratum samples high, heating efficiency height.
(4) overall structure pattern of the invention is vertical type columnar, and compact-sized, small, floor space is small, is had independent
Thermal-arrest and heating part, the independent heating unit of self-contained lays that mode is flexible, and the dispersibility distribution for meeting frost failure is special
Sign.It can adjust condensation heat release section according to the depth bounds and good ground geothermal energy distribution occasion on frost heave stratum and evaporation collect
The length of hot arc, heat supply depth is big, compares the Border Protection effect of existing thermal insulation material, the full side to frost heave stratum may be implemented
Position short distance heat supply.
In conclusion the embodiment of the present invention extends to ground by the frost failure region setting under the roadbed of Frozen Area
Liquid refrigerant is evaporated endothermic gasification by the evaporation collection hot arc of ground source heat pump line, collects ground by the ground source heat pump line of table
The geothermal energy of table deep good ground, sucking the gaseous refrigerant that evaporation collection hot arc generates using compressor, simultaneously boil down to high temperature is high
Gaseous refrigerant is pressed, the high temperature and high pressure gaseous refrigerant cooling that compressor generates is condensed by liquid by condensation heat release section and is released
Heat release can pass to the frost heave stratum of surrounding, offset roadbed in real time and lost to the heat transfer of atmospheric environment, pass through capillary
Throttling process makes liquid refrigerant reenter sweat cooling section, is thus continued for the collection, promotion and release of geothermal energy,
Roadbed temperature is maintained into a higher level, to weaken and eliminate frost heaving.The present invention is the independent heat supply of vertical type columnar
Unit, laying mode is flexible, and heat supply temperature is high, compensates for the deficiency that existing roadbed frozen prevention measures are confined to passivity protection,
The geothermal energy resource that Frozen Area is abundant is made full use of, in winter in real time to roadbed input heat to compensate nature heat waste,
Season matching is good, and calorifics regulation and control are efficient.
One of ordinary skill in the art will appreciate that：Attached drawing is the schematic diagram of one embodiment, module in attached drawing or
Flow is not necessarily implemented necessary to the present invention.
As seen through the above description of the embodiments, those skilled in the art can be understood that the present invention can
It is realized by the mode of software plus required general hardware platform.Based on this understanding, technical scheme of the present invention essence
On in other words the part that contributes to existing technology can be expressed in the form of software products, the computer software product
It can be stored in a storage medium, such as ROM/RAM, magnetic disc, CD, including some instructions are used so that a computer equipment
(can be personal computer, server either network equipment etc.) executes the certain of each embodiment of the present invention or embodiment
Method described in part.
Each embodiment in this specification is described in a progressive manner, identical similar portion between each embodiment
Point just to refer each other, and each embodiment focuses on the differences from other embodiments.Especially for device or
For system embodiment, since it is substantially similar to the method embodiment, so describing fairly simple, related place is referring to method
The part of embodiment illustrates.Apparatus and system embodiment described above is only schematical, wherein the conduct
The unit that separating component illustrates may or may not be physically separated, the component shown as unit can be or
Person may not be physical unit, you can be located at a place, or may be distributed over multiple network units.It can root
According to actual need that some or all of module therein is selected to achieve the purpose of the solution of this embodiment.Ordinary skill
Personnel are without creative efforts, you can to understand and implement.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, the change or replacement that can be readily occurred in,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with scope of the claims
Subject to.
Claims (10)
1. a kind of for preventing the geothermal heat pump of Frozen Area roadbed frost damage, which is characterized in that the device includes：It is embedded in
Ground source heat pump line under earth's surface, steel holder, compressor, capillary, device for drying and filtering and the intelligent controller being placed in earth's surface,
The steel branch is placed on the surface of the ground source heat pump line, and the compressor is fixed on the upper layer of the steel holder, institute
It states capillary and the device for drying and filtering is fixed on the lower layer of the steel holder, the capillary connects with the device for drying and filtering
It connects, the intelligent controller is electrically connected with the compressor；
The part that the ground source heat pump line is embedded in frost heave stratum is condensation heat release section, and the part for being embedded in good ground is evaporation
Collect hot arc, closed be recycled back to is formed between the condensation heat release section, compressor, evaporation collection hot arc, capillary, device for drying and filtering
Refrigerant is discharged into the condensation heat release section by the control compressor and is condensed into liquid by road, the intelligent controller, and
The gaseous refrigerant that the compressor sucks the sweat cooling section is controlled, the temperature of seasonal frozen ground layer is regulated and controled in zone of reasonableness
It is interior.
2. the geothermal heat pump according to claim 1 for preventing Frozen Area roadbed frost damage, which is characterized in that
The device further includes：Protection shell, heat emission hole, temperature sensor and power supply, the protection shell are placed in the steel holder
Outside, the heat emission hole are placed on a side of the protection shell, and the temperature sensor is placed in the ground source heat pump line
The frost heave stratum in outside, the power supply are connect with the intelligent controller and the compressor；
It is arranged on the side of heat emission hole in the protection shell, the intelligent controller is set, and the intelligent controller is located at institute
State the lower section of heat emission hole；
The temperature sensor is attached with the intelligent controller by conducting wire, for by the temperature of the target area detected
Degree is sent to the intelligent controller；
The circuit interface of the power supply and the compressor, the intelligent controller circuit interface between using power lead into
Row sequentially docks, and carries out insulation processing.
3. the geothermal heat pump according to claim 1 or 2 for preventing Frozen Area roadbed frost damage, feature exists
In the device further includes：Refrigerant, the refrigerant be located at the condensation heat release section, compressor, evaporation collection hot arc, capillary,
It is formed between device for drying and filtering in closed circulation loop；
The refrigerant collects hot arc in the evaporation and switchs to gaseous state by liquid, after the gaseous refrigerant is sucked by the compressor
Boil down to high temperature and high pressure gaseous refrigerant, the high temperature and high pressure gaseous refrigerant are condensed into liquid simultaneously into the condensation heat release section
Surrounding formation is transferred thermal energy to, the liquid refrigerant is drawn by the capillary and flow through the device for drying and filtering and completed again
One cycle, the refrigerant recycle next time since the device for drying and filtering reenters the evaporation collection hot arc.
4. the geothermal heat pump according to claim 3 for preventing Frozen Area roadbed frost damage, which is characterized in that
The ground source heat pump line includes：The shell of PVC base tubes, copper pipe and position limiting clamp, the ground source heat pump line is a preset length
PVC base tubes, the limit are folded between condensation heat release section and evaporation collection hot arc, and the copper pipe is wound in the PVC base tubes
For columnar screw type coil pipe；
The ground source heat pump line is divided into：Heat release section and evaporation collection hot arc are condensed, the evaporation collects hot arc in the condensation heat release section
Lower section；
Gas welding overlap joint is carried out using the copper pipe between the entrance and the outlet of the compressor of the condensation heat release section, it is described cold
Gas welding overlap joint is carried out using the copper pipe between the outlet and the entrance of the device for drying and filtering of solidifying heat release section, for institute will to be come from
The high temperature and high pressure gaseous refrigerant cooling for stating compressor is condensed into liquid, and extremely by the heat transfer discharged in cooling condensation process
The frost heave stratum of surrounding is offset roadbed and is lost to the heat transfer of atmospheric environment in real time；
Between the entrance and the outlet of the capillary of the evaporation collection hot arc gas welding overlap joint, the steaming are carried out using the copper pipe
Between the outlet and the entrance of the compressor of hair collection hot arc gas welding overlap joint, the evaporation Ji Reduanchu are carried out using the copper pipe
In good ground, the liquid refrigerant is evaporated gasification and absorbed by the geothermal energy for collecting earth's surface deep good ground
The heat of good ground；
The position limiting clamp, the height for adjusting the condensation heat release section and the evaporation collection hot arc, meets different depth frost heave
The heat demand on stratum；
The copper pipe is divided into two parts in the PVC base tubes, respectively to preset the screw type disk that spacing is coiled into vertical type columnar
Pipe is placed in the condensation heat release section and evaporation collection hot arc, and the circulation loop of reserved preset length；
The copper pipe is additionally operable to connect the condensation heat release section, compressor, evaporation collection hot arc, capillary, device for drying and filtering, utilizes
The copper pipe is subjected to overlapped welding manner, collects hot arc, capillary, dried in the condensation heat release section, compressor, evaporation
Closed circulation loop is formed between filter.
5. the geothermal heat pump according to claim 4 for preventing Frozen Area roadbed frost damage, which is characterized in that
The entrance of the compressor is connected with the outlet of the evaporation collection hot arc, the outlet of the compressor and the condensation heat release section
Entrance is connected；
The compressor is connect with the intelligent controller, and the continuous cycle for driving the refrigerant, the compressor exists
Electric energy is consumed under the control of the intelligent controller, sucks the gaseous refrigerant that the evaporation collection hot arc generates, and pass through
Mechanical work is arranged by the gaseous refrigerant boil down to high temperature and high pressure gaseous refrigerant, then by the high temperature and high pressure gaseous refrigerant
Enter the condensation heat release section.
6. the geothermal heat pump according to claim 5 for preventing Frozen Area roadbed frost damage, which is characterized in that
The entrance of the device for drying and filtering is connected with the outlet of the condensation heat release section, the outlet of the device for drying and filtering and the capillary
The entrance of pipe is connected；
The device for drying and filtering avoids moisture and dirt in circulation line from invading for excluding the moisture in circulation line and dirt
Enter the compressor or is condensed into ice and passage.
7. the geothermal heat pump according to claim 6 for preventing Frozen Area roadbed frost damage, which is characterized in that
The entrance of the capillary is connected with the outlet of the device for drying and filtering, and the outlet of the capillary collects hot arc with the evaporation
Entrance is connected；
The capillary is for throttling, the saturation for gas-liquid two-phase mixing that the liquid refrigerant is cooled down, is depressurized to
Damp steam state.
8. the geothermal heat pump according to claim 7 for preventing Frozen Area roadbed frost damage, which is characterized in that
The intelligent controller carries out the compressor for the refrigeration control temperature and return difference temperature by presetting the compressor
Control；
The intelligent controller receives the formation temperature that the temperature sensor is sent, when the formation temperature reaches preset system
When cold control temperature, the intelligent controller cuts off the power supply and allows the compressor shutdown, waits for that the formation temperature increases to
When the return difference temperature, the intelligent controller restores the power supply, allows the compressor to be again started up and freezes.
9. a kind of implementation for preventing the geothermal heat pump of Frozen Area roadbed frost damage is based on claim 1-8
Any one of them device, which is characterized in that the implementation includes：
Determine the frost heave depth bounds that seasonal frozen ground layer is covered under roadbed；
Measure the thermal physical property parameter and thermic load on seasonal frozen ground stratum；
Determine the design parameters such as height, diameter and the laying spacing of geothermal heat pump；
Drilling construction installs ground source heat pump line.
10. the implementation according to claim 9 for preventing the geothermal heat pump of Frozen Area roadbed frost damage,
It is characterized in that, the design parameters such as the height of the determination geothermal heat pump, diameter and laying spacing, including：
According to the frost heave depth bounds and thermic load of seasonal frozen ground roadbed, installation position and the heat supply of the ground source heat pump line are determined
Range determines the model and length of the evaporation collection hot arc and the copper pipe in the condensation heat release section, determines the condensation respectively
The integral diameter and height of heat release section and the condensation heat release section, and determine the laying spacing of the ground source heat pump line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810190025.0A CN108286840A (en) | 2018-03-08 | 2018-03-08 | Geothermal heat pump for preventing Frozen Area roadbed frost damage and implementation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810190025.0A CN108286840A (en) | 2018-03-08 | 2018-03-08 | Geothermal heat pump for preventing Frozen Area roadbed frost damage and implementation |
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| CN108286840A true CN108286840A (en) | 2018-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810190025.0A Pending CN108286840A (en) | 2018-03-08 | 2018-03-08 | Geothermal heat pump for preventing Frozen Area roadbed frost damage and implementation |
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| CN109268648A (en) * | 2018-10-08 | 2019-01-25 | 王春阳 | A kind of adjustable height geothermal energy equipment |
| WO2020143468A1 (en) * | 2019-01-09 | 2020-07-16 | 石家庄铁道大学 | Device for adjusting heat transfer capacity of roadbed in cold region and control method therefor |
| US20210355639A1 (en) * | 2020-05-13 | 2021-11-18 | Southwest University Of Science And Technology | Vertical ground heat exchanger for reducing temperature in carbonaceous shale rock mass and preventing roadbed frost heave |
| CN114438994A (en) * | 2022-01-28 | 2022-05-06 | 洛阳理工学院 | Temperature control device for frozen soil foundation |
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