CN108224804A - Towards the solar energy heat collector and implementation of seasonal frozen soil region subgrade engineering - Google Patents
Towards the solar energy heat collector and implementation of seasonal frozen soil region subgrade engineering Download PDFInfo
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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
- E01C3/00—Foundations for pavings
- E01C3/06—Methods or arrangements for protecting foundations from destructive influences of moisture, frost or vibration
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/44—Heat exchange systems
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- Engineering & Computer Science (AREA)
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- Road Paving Structures (AREA)
Abstract
The invention discloses a kind of solar energy heat collectors and implementation towards seasonal frozen soil region subgrade engineering, it is related to roadbed damage in permafrost regions Prevention Technique field, including ground heat collection unit and roadbed heating unit, ground heat collection unit includes endothermic tube, the outer cover of endothermic tube is equipped with outer tube, and heat-insulation chamber is formed between endothermic tube and outer tube；Endothermic tube is connected with the both ends of outer tube by sealing section；Roadbed heating unit includes heating tube, and the endothermic tube connects the heating tube；Heat-transfer working medium is filled in endothermic tube and the heating tube.The present invention rationally and effectively controls frozen earth roadbed seasonal heat budget to balance, and antifreezing expansion effect is more effective；The energy has been saved, has reduced cost and hand labor intensity；Collecting efficiency is high, frost resistance is good, anti-leak, and compact-sized, small, floor space is small, and laying mode is flexible, and dispersible arrangement compared to the Border Protection effect of existing thermal insulation material, can realize the comprehensive closely heat supply to frost heave stratum.
Description
Technical field
The present invention relates to permafrost region subgrade defect Prevention Technique fields, and in particular to a kind of towards seasonal frozen soil region roadbed
The solar energy heat collector and implementation of engineering.
Background technology
Frozen soil refers to temperature at 0 DEG C or 0 DEG C hereinafter, and various ground and soil containing ice.The soil body is a kind of to temperature pole
For sensitive material, under subzero temperature environment, water can congeal into ice and volume expansion in soil, thus reduce soil body pore volume, simultaneously
Soil skeleton further deforms under the action of ice expands additional stress, and soil body physico-mechanical properties can great changes will take place.Season
The freezing of frozen soil has soil strength variation larger impact with thaw cycle process, thus roadbed easily occur in winter frost heave protuberance,
Melt a series of freeze injuries such as rise soil in spring.
The generation of frost heaving must be provided simultaneously with the effect of soil property, temperature and water, as long as therefore eliminating these three factors
In a generation for being prevented from Road Frost ＆ Bulge phenomenon.In the case where engineering specifications is certain, temperature is to lead to subgrade defect
Key factor and ensureing all control measures effectively but disease still remains maximally efficient controllable factor.
At present, the engineering measure for preventing frost heave is mainly focused on improvement to soil property and the anti-row of water is handled, including displacement banket method,
Stablize soil facture, artificial salinization method and all kinds of waterproofs, draining, water proof measure.Displacement method, which refers to change using non-frost heave material, fills out
Swelling soil, earth volume is larger, and when needing long distance transportation displacement soil or larger soil removal and replacement depth, cost is higher.Stablize soil processing
Method refers to an appropriate number of cement treated weakness cohesive soil of incorporation, can improve subgrade strength and bearing capacity, increases freeze proof and water resistant
Performance, but cement dose is excessive is also easy to produce contraction fissure.Artificial salinization method refers to is mixed and stirred by punching note salt, dilution injection and earth salt
The salinity that the measures of grade make to be dissolved in water in soil increases, and body frost heaving temperature is made to be less than fresh water freezing point, and this method is suitable for low temperature pole
The slight section of the higher disease of value uses, the new roadbed salination disease of the excessive easy appearance of dosage.Heat-insulated insulating layer method, which refers to, is banketing
It is middle that the thermal insulation materials such as polystyrene are set, bed course is filled on insulating layer, temperature insulating material is more easily damaged during mechanical ramming.
Therefore, existing roadbed frozen prevention measures lack the active control to temperature, and existing insulating layer method is also limited by roadbed side
Boundary it is passive.
The starting point of more than measure is to overcome and delay roadbed frost damage, can only reduce frost heave, it is impossible to eradicate freeze injury, belong to
Preventative passive measure.Roadbed is still likely to occur a series of the problem of frost heaves cause under harsh climate, and needs continuous
Put into maintenance cost.Therefore, frost zone frost failure aims at prevention at present, occurs in foundation frost heaving and influences road just
Lack quickly and effectively control measures after normal safe operation.Cold area's high-speed railway, heavy haul railway construction satisfy the need base physical environment with
Environment conditioning technology proposes higher requirement, it is necessary to research and develop more efficiently active temperature regulation measure.
In regenerative resource, solar energy is resource one kind the abundantest, widely distributed, is easily obtained.Wherein, the sun
Energy solar thermal utilization is presently the most ripe solar utilization technique.It is fortunately that China seasonal frozen soil region is in the sun
Can it is good one using condition, two, three classes area, solar energy heat utilization has good applicable in cold area subgrade engineering
Property.
At present, solar energy heat utilization technology is mainly directed towards the industries such as living environment's control and commercial Application, is limited to subject
Difference, then there are no be related to for the Solar use applied towards roadbed environmental Kuznets Curves.
The diabatic process of roadbed and atmospheric environment includes two stages：In winter, when atmospheric environment is less than roadbed temperature,
It is conducted heat from roadbed to air, roadbed cooling；Except in winter, when atmospheric temperature is higher than roadbed temperature, passed from air to roadbed
Heat, roadbed heating.In severe cold area, reachable -40 DEG C of winter minimum temperature, roadbed and under cover between stratum and air in winter
The temperature difference will be generally higher than summer, while water becomes the thermal conductivity factor after ice and can also increase in soil, causes the heat transfer efficiency in winter will
More than summer.Therefore, the excessive heat loss in winter is the main reason for cold area's roadbed freeze-harm.So, from heat transfer improvement side
Always it sees, on the one hand, heat transfer efficiency of the air to roadbed should be improved, roadbed is made to reach higher temperature water before arriving in winter
It is flat to be conducive to offset cold season heat waste；On the other hand, an external heat source is provided in cold season, conducted heat to roadbed to compensate heat waste, it is real
Now active heat supply.Therefore, for seasonal frozen soil region roadbed and under cover ground frost failure prevent demand, based on solar energy
The abundant distribution of solar energy condition of heat utilization technology and China seasonal frozen soil region, develops towards seasonal frozen soil region subgrade engineering
The solar energy heat collector of frost failure has huge application potential.
Invention content
The purpose of the present invention is to provide a kind of can realize to store up and supplement in real time, collecting efficiency to the heat of roadbed in advance
Height, frost resistance are good, anti-leak, compact-sized, small, and laying mode is flexible, can realize to the comprehensive near of frost heave stratum
Apart from heat supply for preventing the solar energy heat collector and method of seasonal frozen soil region roadbed frost damage, to solve above-mentioned background skill
The technical issues of existing anti-freeze expansion technique effect is poor in art, and maintenance cost is high, and roadbed heat supply regulating effect is poor.
To achieve these goals, this invention takes following technical solutions：
One aspect of the present invention provides a kind of solar energy heat collector towards seasonal frozen soil region subgrade engineering, the device
Including ground heat collection unit and roadbed heating unit, the ground heat collection unit is used to convert the solar into thermal energy, and will be hot
The roadbed heating unit can be passed to；The roadbed heating unit is used for the thermal energy for transmitting the ground heat collection unit and transmits
To frozen earth roadbed；
The ground heat collection unit includes endothermic tube, and the outer cover of the endothermic tube is equipped with outer tube, the endothermic tube with
Heat-insulation chamber is formed between the outer tube；The endothermic tube is connected with the both ends of the outer tube by sealing section；
The roadbed heating unit includes heating tube, and the endothermic tube connects the heating tube；
Heat-transfer working medium is filled in the endothermic tube and the heating tube.
Further, the lower end of the endothermic tube passes through the sealing section to connect the heat supply by the first screwed flange
Pipe.
Further, several conducting-heat elements are uniformly provided on the outer wall of the heating tube.
Further, the conducting-heat elements are the thermally conductive sheet being fixed in the heat supply pipe outer wall；Alternatively, the heat-conducting part
Part is connected for one end with the heating tube, the heat conducting pipe of other end closing.
Further, the upper end of the endothermic tube is communicated with the second screwed flange, second spiral shell across the sealing section
The upper end of line flange is equipped with blank flange, and the upper end of the blank flange is connected with pressure gauge by union elbow.
Further, getter is equipped in the heat-insulation chamber.
Further, the heat-transfer working medium is conduction oil.
Further, the outer wall of the endothermic tube is equipped with sputtered coating absorbing solar energy selectively.
Further, the endothermic tube is made of metal material, and the outer tube is made of glass, and the heating tube is by gold
Belong to material to be made.
Another aspect of the present invention provides a kind of technical solution of the implementation of device as described above, this method packet
Include following steps：
Step S110：Determine to cover the frost heave depth bounds of seasonal frozen ground layer under roadbed；
In winter by laying the measurement method of thermometer hole and deformation monitoring hole, with reference to geology radar survey, season is determined
The frost heave depth bounds of frozen soil；
Step S120：Measure the thermal physical property parameter and thermic load on seasonal frozen ground stratum；
It is tested by geo-thermal response test, determines stratum thermal physical property parameter, set the modification scope of seasonal frozen ground temperature, calculated
The winter thermic load of seasonal frozen ground roadbed；
Step S130：Determine the design parameters such as height, diameter and the laying spacing of solar energy heat collection pipe；
According to the frost heave depth bounds and thermic load of seasonal frozen ground roadbed, installation position and the confession of solar energy heat collection pipe are determined
Heat rating determines the diameter of endothermic tube, outer tube and heating tube and height and the laying spacing of solar energy heat collector；
Step S140：Drilling construction installs solar energy heat collector；
Hole is drilled with by no-dig technique mechanical hole building mode, the roadbed heating unit of solar energy heat collector is embedded to pore-forming
In, the backfill of hole gap is closely knit after the completion of laying.
Advantageous effect of the present invention：The present invention can realize to be stored up the heat of roadbed and supplements in real time in advance, compensates for existing arrange
The passivity protective mechanism applied can efficiently control the seasonal heat budget of roadbed to balance；It is compact-sized, it is small, take up an area face
Product is small, has independent thermal-arrest and heating part, laying mode is flexible, meets the dispersed distribution characteristics of frost failure；Metal
Endothermic tube has the characteristics of collecting efficiency is high, frost resistance is good, and structural strength is big, sturdy and durable, and shock resistance is good, improves vibrations ring
The security performance of subgrade engineering in border；It can be according to the jelly depth range of seasonal frozen ground, the entire length of regulating device, compared to existing
The Border Protection effect of thermal insulation material can realize the comprehensive closely heat supply to frost heave stratum.
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
It obtains significantly or is recognized by the practice of the present invention.
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, the accompanying drawings in the following description is only some embodiments of the present invention, for this
For the those of ordinary skill of field, without creative efforts, others are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is the solar energy heat collector structure towards seasonal frozen soil region subgrade engineering described in the embodiment of the present invention
Figure.
Fig. 2 is sectional view at A-A in Fig. 1.
Fig. 3 is sectional view at B-B in Fig. 1.
Fig. 4 is sectional view at C-C in Fig. 1.
Fig. 5 is the implementation of the solar energy heat collector towards seasonal frozen soil region subgrade engineering described in the embodiment of the present invention
Method flow diagram.
Wherein：1- endothermic tubes；2- outer tubes；3- heat-insulation chambers；4- sealing sections；5- heating tubes；6- heat-transfer working mediums；The first spiral shells of 7-
Line flange；8- conducting-heat elements；The second screwed flanges of 9-；10- blank flanges；11- union elbows；12- pressure gauges；13- getters；
14- solar selectively absorbing coatings；15- flange gaskets；16- bolts；17- spring supports；18- vacuum tail mouths.
Specific embodiment
Embodiments of the present invention are described in detail below, and the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element is represented to same or similar label eventually or there is the element of same or like function.Below by attached
The embodiment of figure 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
Diction " comprising " refers to there are the feature, integer, step, operation, element and/or component, but it is not excluded that presence or addition
Other one or more features, integer, step, operation, element and/or their group.It should be understood that " connection " used herein
Or " coupling " can include wireless connection or coupling, the wording "and/or" used includes one or more associated list
Any cell of item and all combination.
Those skilled in the art of the present technique are appreciated that unless otherwise defined all terms used herein are (including technology art
Language and scientific terminology) there is the 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.
It is of the invention for ease of understanding, explanation is further explained the present invention with specific embodiment below in conjunction with the accompanying drawings, and
Specific embodiment does not form the restriction to the embodiment of the present invention.
It should be appreciated by those skilled in the art that attached drawing is the schematic diagram of embodiment, the component in attached drawing is not necessarily
Necessary to the implementation present invention.
Embodiment one
The embodiment of the present invention one provides a kind of solar energy heat collector for being used to prevent seasonal frozen soil region roadbed frost damage,
The device includes ground heat collection unit and roadbed heating unit, and the ground heat collection unit is used to convert the solar into thermal energy,
And transfer thermal energy to the roadbed heating unit；The roadbed heating unit is used for the heat for transmitting the ground heat collection unit
It can pass to frozen earth roadbed.
As shown in Figure 1, it is filled for the solar energy heating towards seasonal frozen soil region subgrade engineering described in the embodiment of the present invention
Structure chart is put, the ground heat collection unit includes endothermic tube 1, and the endothermic tube 1 is made of metal material, and heat-collecting temperature is high, tool
There are good heat conductivility and processing performance, it is corrosion-resistant；The outer cover of the endothermic tube 1 is equipped with outer tube 2, and outer tube 2 is boron
Silica glass 3.3 has many advantages, such as that transmittance is high, thermal stability is good, corrosion-resistant, resistance to mechanical impact.The endothermic tube 1 with it is described outer
Heat-insulation chamber 3 is formed between casing 2；The both ends of the endothermic tube 1 and the outer tube 2 are connected by sealing section 4；Due to heat absorption
It is the heat-insulation chamber 3 of vacuum insulation between pipe 1 and outer tube 2, the outside windage of thermal energy is minimum.
The roadbed heating unit includes heating tube 5, and the lower end of endothermic tube 1 passes through the first spiral shell across the sealing section 4
Line flange 7 connects the heating tube 5；Filled with heat-transfer working medium 6, the heat transfer work in the endothermic tube 1 and the heating tube 5
Matter 6 is conduction oil.In specifically used, the material of heat-transfer working medium is not limited by above-mentioned conduction oil.
As shown in figure 4, it is filled for the solar energy heating towards seasonal frozen soil region subgrade engineering described in the embodiment of the present invention
Heating tube sectional view is put, the thermal energy that endothermic tube 1 is converted is transferred inwardly to the heat-transfer working medium 6 in metal heat absorption tube 1, and thermal energy is through passing
Hot working fluid 6 is transferred in heating tube 5, and several conducting-heat elements 8 are uniformly provided on the outer wall of heating tube 5.Conducting-heat elements 8 can expand with
The contact area of frozen soil is conducive to improve transmission speed of the heat from heating tube 5 to frozen soil.The conducting-heat elements 8 is are fixed on
Heat transmission fin on 5 outer wall of heating tube, heat transmission fin are the stronger copper strips of thermal conductivity or aluminium strip fin；Conducting-heat elements 8
Can be that one end is connected with the heating tube 5, the metal heat-conducting tube of other end closing.
Getter 13 is equipped in the heat-insulation chamber 3.Getter 13 can absorb the gas generated in heat-insulation chamber 3 at any time, keep
The vacuum degree of heat-insulation chamber 3, prevents heat from transmitting outward, keeps heat utilization ratio.
Spring support 17 between endothermic tube 1 and outer tube 2 can be set, endothermic tube is fixed on central axis, enhancing dress
The structural stability put prevents high temperature coating from touching outer tube 2 and damaging.
As shown in Fig. 2, it is filled for the solar energy heating towards seasonal frozen soil region subgrade engineering described in the embodiment of the present invention
The sectional view of the second screwed flange and blank flange junction is put, the upper end of the endothermic tube 1 is communicated with across the sealing section 4
Second screwed flange 9, the upper end of second screwed flange 9 are equipped with blank flange 10, and the upper end of the blank flange 10 passes through
Union elbow 11 is connected with pressure gauge 12.When conduction oil when the temperature is excessively high, can generate volume expansion and volatilization steam phenomenon, lead to
Excess pressure table 12 can monitor the rising condition of solar energy heat collection pipe internal pressure in real time, when there are should be adopted in time during security risk
Take emergency measure.
As shown in figure 3, it is filled for the solar energy heating towards seasonal frozen soil region subgrade engineering described in the embodiment of the present invention
Endothermic tube and outer tube sectional view are put, the outer wall of the endothermic tube 1 is equipped with sputtered coating absorbing solar energy selectively 14, the sun
Energy coating for selective absorption is optical-thermal conversion material.When sunlight is incident upon through outer tube 2 on metal heat absorption tube 1, height is inhaled
Solar radiant energy is converted into thermal energy by the solar selectively absorbing coating 14 of yield.
Device concrete operating principle of the present invention is：There is daytime for shining upon, sunlight penetrates heat collection unit
Glass cloth pipe 2, be incident upon on metal heat absorption tube 1, solar radiant energy is converted into heat by solar selectively absorbing coating 14
Energy.Thermal energy passes to the conduction oil in pipe by the tube wall of endothermic tube 1, and the temperature raising of conduction oil makes leading inside endothermic tube 1
Conduction oil in deep fat and heating tube 5 generates temperature difference, and thermal energy is transmitted from endothermic tube 1 to the heating tube 5 of roadbed heating unit.
Under temperature difference driving effect, heat continuation is transmitted from heating tube 5 to conducting-heat elements 8, is passed to around pipe eventually by conducting-heat elements 8
Low temperature roadbed frozen soil, be achieved in the heat supply to seasonal frozen soil region roadbed.
Embodiment two
The embodiment of the present invention two provides the making group towards the solar energy heat collector of seasonal frozen soil region subgrade engineering
Dress method, in the present embodiment, the specific make step of the ground heat collection unit include：
(a) a certain length stainless steel tube is selected, in the outer wall sputtered coating absorbing solar energy selectively of stainless steel tube,
Each remaining 5cm blank in stainless steel tube both ends, as metal heat absorption tube；
(b) glass tube that 10cm is differed with metal heat absorption tube length is selected, using glass-to-metal seal section by metal
Endothermic tube and glass tube sealing socket, the blank parts of metal heat absorption tube end 5cm length are in the outer of glass-to-metal seal section
Side；
(c) interlayer space between metal heat absorption tube and glass tube is vacuumized by vacuum tail mouth 18, obtains heat-insulation chamber；
(d) screwed flange is respectively welded on the top of stainless steel tube and bottom end.
The specific make step of the roadbed heating unit includes：
(a) the metal base tube of a certain length is selected, bottom end welding is shut, top welding screwed flange；
(b) heat transmission fin is welded on the outer wall of metal base tube；
The specific assemble method of solar energy heat collector described in the embodiment of the present invention is：
(a) docking will be sealed with bolt 16 after the screwed flange of solar thermal unit bottom end placement flange gasket 15, gold
The inside for belonging to endothermic tube and metal base tube is through-void；
(b) by the screwed flange at the top of metal heat absorption tube, heat conduction is perfused to the inside of metal heat absorption tube and metal base tube
Oil；
(c) pressure gauge is welded on by curved pass joint on blank flange；
(d) use bolt 16 close after flange gasket 15 being placed between the screwed flange at the top of blank flange and metal heat absorption tube
Envelope docking.
Vertical type columnar structure is integrally formed in solar energy heat collector after assembling, and the structure type of vertical type columnar makes device
Structure is compacter, small, and floor space is small, and laying mode is flexible, meets the dispersed distribution characteristics of frost failure；May be used also
According to the jelly depth range of seasonal frozen ground, regulating device endothermic tube, heating tube length, compared to the Border Protection of existing thermal insulation material
Effect can realize the comprehensive closely heat supply to frost heave stratum.
Embodiment three
The embodiment of the present invention three provides the embodiment party of the solar energy heat collector towards seasonal frozen soil region subgrade engineering
Method, as shown in figure 5, for the solar energy heat collector towards seasonal frozen soil region subgrade engineering described in the embodiment of the present invention three
Implementation flow chart, the implementation include the following steps：
Step S110：Determine to cover the frost heave depth bounds of seasonal frozen ground layer under roadbed；In winter by lay thermometer hole and
The measurement method in deformation monitoring hole with reference to geology radar survey, determines the frost heave depth bounds of seasonal frozen ground；
Step S120：Measure the thermal physical property parameter and thermic load on seasonal frozen ground stratum；It is tested, determined by geo-thermal response test
Stratum thermal physical property parameter sets the modification scope of seasonal frozen ground temperature, calculates the thermic load of seasonal frozen ground roadbed；
Step S130：Determine the design parameter of solar energy heat collection pipe；According to the frost heave depth bounds of seasonal frozen ground roadbed and
Thermic load determines the installation position and heating range of solar energy heat collection pipe, determine endothermic tube, outer tube and heating tube diameter and
Highly and the laying spacing of solar energy heat collector；
Step S140：Drilling construction installs solar energy heat collector；Hole is drilled with by no-dig technique mechanical hole building mode,
By in the roadbed heating unit embedment pore-forming of solar energy heat collector, the backfill of hole gap is closely knit after the completion of laying.
In conclusion the operational effect of the present invention is that, in summer, intensity of solar radiation is big, solar energy collection more than earth's surface
The photothermal conversion efficiency of hot arc is higher, can enhance heat transfer efficiency of the air to roadbed, and passes through roadbed and supply hot arc will be hot
Amount passes to roadbed, using roadbed as a heat carrier, improves roadbed temperature and stores heat, for offsetting roadbed in winter
It is lost to the heat transfer of atmospheric environment.In winter, under fair weather, when heat conduction oil temperature is higher than roadbed in solar energy heating section
During temperature, it can also conduct heat to roadbed, with real-time compensation thermal loss.Heat condition is supplied in the whole year of summer heat accumulation and winter concurrent heating
Under, roadbed temperature is maintained into a higher level, to weaken frost heave degree, when temperature is higher than the solidification point of roadbed material
When, you can eliminate frost heaving.
Specifically, compared to the frozen prevention measures such as existing soil improvement, guarded drainage, thermal insulation material, the present invention realizes pair
The heat of roadbed is stored up and is supplemented in real time in advance, compensates for the passivity protective mechanism of existing measure, more efficiently controls roadbed
Seasonal heat budget balance, anti-freeze expansion mechanism are more effectively and advanced；Based on solar energy techniques, belong to utilization of new energy resources
Technology, can be realized compared to other heat supply process it is unattended, it is annual all in working condition, with huge in cold area subgrade engineering
Big application advantage；Compared to common all-glass vacuum thermal-collecting tube, the heat-collecting temperature of metal heat absorption tube is high, will not occur in winter
Bursting by freezing, has that collecting efficiency is high, frost resistance is good, anti-leak, structural strength are big, and sturdy and durable, shock resistance is good, applied to vibrations ring
Security performance is high during the subgrade engineering in border；The structure type of vertical type columnar makes compact-sized, and small, floor space is small, has
Independent thermal-arrest and heating part, laying mode is flexible, meets the dispersed distribution characteristics of frost failure；It can be according to seasonal frozen ground
Jelly depth range, adjust roadbed supply hot arc length, compared to the Border Protection effect of existing thermal insulation material, can realize to frost heave
The comprehensive closely heat supply on stratum.
One of ordinary skill in the art will appreciate that：The component in device in the embodiment of the present invention can be according to embodiment
Description be distributed in the device of embodiment, respective change can also be carried out and be located at one or more dresses different from the present embodiment
In putting.The component of above-described embodiment can be merged into a component, can also be further split into multiple subassemblies.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be 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 solar energy heat collector towards seasonal frozen soil region subgrade engineering, it is characterised in that：Including ground thermal-arrest list
Member and roadbed heating unit, the ground heat collection unit are used to convert the solar into thermal energy, and transfer thermal energy to the road
Base heating unit；The roadbed heating unit is frozen earth roadbed for the thermal energy that the ground heat collection unit is transmitted to be passed to；
The ground heat collection unit includes endothermic tube (1), and the outer cover of the endothermic tube (1) is equipped with outer tube (2), the heat absorption
Heat-insulation chamber (3) is formed between pipe (1) and the outer tube (2)；The both ends of the endothermic tube (1) and the outer tube (2) lead to
Cross sealing section (4) connection；
The roadbed heating unit includes heating tube (5), and the endothermic tube (1) connects the heating tube (5)；
Heat-transfer working medium (6) is filled in the endothermic tube (1) and the heating tube (5).
2. the solar energy heat collector according to claim 1 towards seasonal frozen soil region subgrade engineering, it is characterised in that：
The lower end of the endothermic tube (1) passes through the sealing section (4) to connect the heating tube (5) by the first screwed flange (7).
3. the solar energy heat collector according to claim 1 towards seasonal frozen soil region subgrade engineering, it is characterised in that：
Several conducting-heat elements (8) are uniformly provided on the outer wall of the heating tube (5).
4. the solar energy heat collector according to claim 3 towards seasonal frozen soil region subgrade engineering, it is characterised in that：
The conducting-heat elements (8) are the thermally conductive sheet being fixed on the heating tube (5) outer wall；Alternatively, the conducting-heat elements (8) are one end
It is connected with the heating tube (5), the heat conducting pipe of other end closing.
5. the solar energy heat collector according to claim 1 towards seasonal frozen soil region subgrade engineering, it is characterised in that：
The upper end of the endothermic tube (1) is communicated with the second screwed flange (9), second screwed flange (9) across the sealing section (4)
Upper end be equipped with blank flange (10), the upper end of the blank flange (10) is connected with pressure gauge by union elbow (11)
(12)。
6. the solar energy heat collector according to claim 5 towards seasonal frozen soil region subgrade engineering, it is characterised in that：
Getter (13) is equipped in the heat-insulation chamber (3).
7. the solar energy heat collector according to claim 1 towards seasonal frozen soil region subgrade engineering, it is characterised in that：
The heat-transfer working medium (6) is conduction oil.
8. the solar energy heat collector according to claim 1 towards seasonal frozen soil region subgrade engineering, it is characterised in that：
The outer wall of the endothermic tube (1) is equipped with solar selectively absorbing coating (14).
9. according to claim 1-8 any one of them towards the solar energy heat collector of seasonal frozen soil region subgrade engineering,
It is characterized in that：The endothermic tube (1) is made of metal material, and the outer tube (2) is made of glass, the heating tube (5) by
Metal material is made.
10. a kind of implementation of device as claimed in claim 9, which is characterized in that include the following steps：
Step S110：Determine to cover the frost heave depth bounds of seasonal frozen ground layer under roadbed；
Step S120：Measure the thermal physical property parameter and thermic load on seasonal frozen ground stratum；
Step S130：Determine the design parameter of solar energy heat collection pipe；
Step S140：Drilling construction installs solar energy heat collector.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109440559A (en) * | 2018-12-12 | 2019-03-08 | 石家庄铁道大学 | Roadbed internal-circulation type solar-heating device and roadbed anti-freeze expansion method |
| CN109577126A (en) * | 2019-01-22 | 2019-04-05 | 石家庄铁道大学 | Pipe type solar heat photo-thermal device and roadbed anti-freeze expansion method for roadbed frost damage |
| CN110502847A (en) * | 2019-08-27 | 2019-11-26 | 中铁西北科学研究院有限公司 | Permafrost Area hot-mix recycling design and calculation method based on heat budget equilibrium principle |
| CN112923584A (en) * | 2021-03-25 | 2021-06-08 | 中国科学院西北生态环境资源研究院 | Light-focusing type anti-freezing expansion heat-collecting device and roadbed thereof |
| CN112923579A (en) * | 2021-03-25 | 2021-06-08 | 中国科学院西北生态环境资源研究院 | Lying type anti-freezing expansion heat-collecting device and roadbed thereof |
| CN113048660A (en) * | 2021-03-25 | 2021-06-29 | 中国科学院西北生态环境资源研究院 | Air self-circulation unpowered heating device and roadbed thereof |
| CN115305840A (en) * | 2022-07-15 | 2022-11-08 | 湖北工业大学 | Mounting structure of pipe culvert |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3217791A (en) * | 1964-07-30 | 1965-11-16 | Erwin L Long | Means for maintaining perma-frost foundations |
| US3976125A (en) * | 1972-09-25 | 1976-08-24 | The Dow Chemical Company | Thermal bleed for permafrost environments |
| CN103590293A (en) * | 2013-11-18 | 2014-02-19 | 中铁西北科学研究院有限公司 | Method for maintaining thermal stability of permafrost foundation subgrade by using solar refrigeration device |
| CN204125812U (en) * | 2014-10-13 | 2015-01-28 | 胡田飞 | A kind of thawing apparatus of initiatively heating preventing and treating seasonal frozen soil region roadbed frost damage disease |
| CN104596122A (en) * | 2015-01-27 | 2015-05-06 | 江苏中圣压力容器装备制造有限公司 | Method for preventing and controlling freeze-expanded damage to water-containing subgrade in cold region and bunched low-temperature heat pipe |
| CN107782014A (en) * | 2017-11-28 | 2018-03-09 | 北京交通大学 | Towards the adsorption refrigeration device and method of Permafrost Area subgrade engineering |
| CN208124654U (en) * | 2018-03-13 | 2018-11-20 | 北京交通大学 | Solar energy heat collector towards seasonal frozen soil region subgrade engineering |
-
2018
- 2018-03-13 CN CN201810205427.3A patent/CN108224804A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3217791A (en) * | 1964-07-30 | 1965-11-16 | Erwin L Long | Means for maintaining perma-frost foundations |
| US3976125A (en) * | 1972-09-25 | 1976-08-24 | The Dow Chemical Company | Thermal bleed for permafrost environments |
| CN103590293A (en) * | 2013-11-18 | 2014-02-19 | 中铁西北科学研究院有限公司 | Method for maintaining thermal stability of permafrost foundation subgrade by using solar refrigeration device |
| CN204125812U (en) * | 2014-10-13 | 2015-01-28 | 胡田飞 | A kind of thawing apparatus of initiatively heating preventing and treating seasonal frozen soil region roadbed frost damage disease |
| CN104596122A (en) * | 2015-01-27 | 2015-05-06 | 江苏中圣压力容器装备制造有限公司 | Method for preventing and controlling freeze-expanded damage to water-containing subgrade in cold region and bunched low-temperature heat pipe |
| CN107782014A (en) * | 2017-11-28 | 2018-03-09 | 北京交通大学 | Towards the adsorption refrigeration device and method of Permafrost Area subgrade engineering |
| CN208124654U (en) * | 2018-03-13 | 2018-11-20 | 北京交通大学 | Solar energy heat collector towards seasonal frozen soil region subgrade engineering |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109440559A (en) * | 2018-12-12 | 2019-03-08 | 石家庄铁道大学 | Roadbed internal-circulation type solar-heating device and roadbed anti-freeze expansion method |
| CN109577126A (en) * | 2019-01-22 | 2019-04-05 | 石家庄铁道大学 | Pipe type solar heat photo-thermal device and roadbed anti-freeze expansion method for roadbed frost damage |
| CN109577126B (en) * | 2019-01-22 | 2023-10-20 | 石家庄铁道大学 | Heat pipe type solar thermal device for frost heaving of roadbed and frost heaving prevention method of roadbed |
| CN110502847A (en) * | 2019-08-27 | 2019-11-26 | 中铁西北科学研究院有限公司 | Permafrost Area hot-mix recycling design and calculation method based on heat budget equilibrium principle |
| CN110502847B (en) * | 2019-08-27 | 2021-04-20 | 中铁西北科学研究院有限公司 | Design and calculation method for permafrost region hot-rod roadbed based on heat balance principle |
| CN112923584A (en) * | 2021-03-25 | 2021-06-08 | 中国科学院西北生态环境资源研究院 | Light-focusing type anti-freezing expansion heat-collecting device and roadbed thereof |
| CN112923579A (en) * | 2021-03-25 | 2021-06-08 | 中国科学院西北生态环境资源研究院 | Lying type anti-freezing expansion heat-collecting device and roadbed thereof |
| CN113048660A (en) * | 2021-03-25 | 2021-06-29 | 中国科学院西北生态环境资源研究院 | Air self-circulation unpowered heating device and roadbed thereof |
| CN115305840A (en) * | 2022-07-15 | 2022-11-08 | 湖北工业大学 | Mounting structure of pipe culvert |
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Application publication date: 20180629 |