CN216378977U - Frozen soil roadbed protective structure - Google Patents
Frozen soil roadbed protective structure Download PDFInfo
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- CN216378977U CN216378977U CN202122508224.1U CN202122508224U CN216378977U CN 216378977 U CN216378977 U CN 216378977U CN 202122508224 U CN202122508224 U CN 202122508224U CN 216378977 U CN216378977 U CN 216378977U
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- roadbed
- frozen soil
- refrigeration
- protective structure
- electric energy
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- 239000002689 soil Substances 0.000 title claims abstract description 58
- 230000001681 protective effect Effects 0.000 title claims description 24
- 238000005057 refrigeration Methods 0.000 claims abstract description 61
- 238000009413 insulation Methods 0.000 claims abstract description 23
- 230000001932 seasonal effect Effects 0.000 claims abstract description 15
- 238000010248 power generation Methods 0.000 claims description 19
- 239000004814 polyurethane Substances 0.000 claims description 4
- 239000004793 Polystyrene Substances 0.000 claims description 3
- 229920006248 expandable polystyrene Polymers 0.000 claims description 3
- 229920002223 polystyrene Polymers 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims 1
- 238000001816 cooling Methods 0.000 abstract description 6
- 239000013589 supplement Substances 0.000 abstract description 6
- 230000000593 degrading effect Effects 0.000 abstract description 3
- 238000004321 preservation Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 2
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- 230000009545 invasion Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
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Abstract
The utility model relates to the technical field of frozen soil protection, and discloses a frozen soil roadbed protection structure which comprises a roadbed, a refrigerating device, an electric energy supply device and a main controller, wherein the refrigerating device comprises a refrigerating driver, a condenser and a refrigerating pipe; the roadbed is arranged on the seasonal frozen soil layer, the heat insulation board is arranged in the roadbed along the paving direction of the roadbed, the refrigeration conveying section is arranged in the seasonal frozen soil layer or the roadbed and is positioned below the heat insulation board, and the loopback section is arranged in the roadbed and is positioned above the heat insulation board; the main controller is respectively connected with the refrigerating device and the electric energy supply device, and the electric energy supply device supplies power for the main controller and the refrigerating device. The utility model can actively refrigerate to supplement the frozen soil layer for real-time cooling, ensure the stable structure of the roadbed and prevent the frozen soil layer from degrading for many years.
Description
Technical Field
The utility model relates to the technical field of frozen soil protection, in particular to a frozen soil roadbed protection structure.
Background
Frozen earth is a generic term for all kinds of earth (rocks) containing ice at temperatures below 0 ℃. And can be divided into short-term frozen soil, seasonal frozen soil and perennial frozen soil according to duration. China is third in the world in permafrost distribution area and is second to Russia and Canada. The physical and mechanical properties of frozen earth are significantly affected by temperature. Under the condition of negative temperature, water in soil is frozen into ice and the frost heaving deformation is caused by water migration; under the normal temperature condition, ice in frozen soil is melted into water to cause hot melt settlement, and the deformation and damage of an engineering structure system are more easily caused by the freeze-thaw cycle action.
In frozen soil engineering construction, it is widely accepted at home and abroad that: the frozen soil region in seasons mainly faces the problem of frost heaving, and the frozen soil region in years primarily considers the problem of hot melting. The roadbed structure is built in a permafrost region, so that the heat exchange condition between the earth surface and the atmosphere is changed inevitably, the water-heat balance of the permafrost covered under the roadbed is broken, and the influence of global warming causes the permafrost to be degraded, the depth of an active layer to be increased, a series of frozen soil heat damage problems are caused, and the long-term service performance of a road is seriously influenced.
In the past, measures for protecting permafrost are provided in Qinghai-Tibet highways and Qinghai-Tibet railways. Such as high fill subgrade, heat preservation subgrade, etc., which rely on increasing thermal resistance to protect the subgrade from being covered with permafrost for many years, and belongs to a passive protection type. In addition, active cooling type roadbeds such as a broken stone roadbed, a ventilation pipe roadbed, a rubble slope protection roadbed and the like mainly rely on air convection to achieve the purpose of cooling the roadbeds, are easy to be blocked by wind sand, and are relatively difficult to operate and maintain at the later stage; the hot rod roadbed transfers the heat in the roadbed to the atmospheric environment by means of working medium phase change, but the heat can only play a role in cooling in cold seasons, and the seasonal matching is poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problem of providing a frozen soil roadbed protective structure which can actively refrigerate to supplement the frozen soil layer in real time, ensure the structural stability of the roadbed and prevent the permafrost layer from deteriorating.
In order to solve the technical problems, the utility model provides a frozen soil roadbed protection structure which comprises a roadbed, a refrigeration device, an electric energy supply device and a main controller, wherein the refrigeration device comprises a refrigeration driver, a condenser and a refrigeration pipe, the refrigeration pipe comprises a refrigeration conveying section and a return section connected with the output end of the refrigeration conveying section, the output end of the refrigeration driver is connected with the input end of the refrigeration conveying section through the condenser, and the output end of the return section is connected with the input end of the refrigeration driver; the roadbed is arranged on a seasonal frozen soil layer, heat insulation plates are arranged in the roadbed along the paving direction of the roadbed, the refrigeration conveying section is arranged in the seasonal frozen soil layer or the roadbed and located below the heat insulation plates, and the loopback section is arranged in the roadbed and located above the heat insulation plates;
the main controller is respectively connected with the refrigerating device and the electric energy supply device, and the electric energy supply device supplies power for the main controller and the refrigerating device.
As a preferable scheme of the present invention, a temperature sensor is disposed on a tube wall of the refrigeration tube, the main controller is connected to the temperature sensor, and the electric energy supply device supplies power to the temperature sensor.
As a preferable scheme of the utility model, the electric energy supply device is a photovoltaic power generation device, a wind power generation device or a photovoltaic wind power generation device; the refrigeration driver is a DC compressor.
In a preferred embodiment of the present invention, a restrictor is provided between the condenser and the refrigerant pipe.
As a preferable scheme of the present invention, the dc compressor is a steam type dc compressor, the condenser is an air-cooled condenser, and the restrictor is a capillary tube or an electronic throttle valve.
The direct current compressor, the condenser, the throttler and the main controller are arranged in the protective shell.
As a preferable aspect of the present invention, the cooling pipe is provided in plural and arranged in a width direction of the roadbed.
In a preferred embodiment of the present invention, the insulation board is one of an extruded polystyrene board, an expandable polystyrene insulation board, and a polyurethane insulation board.
As a preferable scheme of the utility model, the part of the refrigeration conveying section and the return conveying section, which is exposed to the air, is wrapped by the heat insulation material.
The utility model also comprises a wireless transmitter connected with the master controller.
Compared with the prior art, the frozen soil roadbed protection structure has the beneficial effects that:
the roadbed, the covered seasonal frozen soil layer and the covered perennial frozen soil layer can be subjected to real-time supplementary cooling through the refrigerating device, so that the influence of the thawing of the seasonal frozen soil layer on the roadbed structure is avoided, and the cold storage capacity of the covered perennial frozen soil layer of the roadbed is improved; the loopback section and the refrigeration conveying section are respectively arranged at the upper side and the lower side of the heat-insulating plate, on one hand, the heat-insulating plate can obstruct heat flow invasion of the earth surface and the side slope, on the other hand, the cold loss of the refrigeration conveying section can be reduced, and the loopback section is arranged above the heat-insulating plate to prevent the temperature of the loopback section from influencing the temperature of the cold conveying section; therefore, the utility model can actively refrigerate to supplement the frozen soil layer in real time, ensure the stable structure of the roadbed and prevent the frozen soil layer from degrading for many years.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.
Fig. 1 is a schematic structural view of a frozen soil roadbed protective structure provided by the utility model;
in the figure, 1 is a roadbed; 2 is a refrigerating device; 21 is a refrigerating pipe; 211 is a refrigeration conveying section; 212 is a loopback section; 3 is an electric energy supply device; 4 is a heat insulation plate; 5 is a protective shell; 6 is a seasonal frozen soil layer; and 7 is a permafrost layer.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "top", "bottom", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, which are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.
As shown in fig. 1, a frozen soil roadbed protecting structure according to a preferred embodiment of the present invention includes a roadbed 1, a refrigeration device 2, an electric energy supply device 3 and a main controller, where the refrigeration device 2 includes a refrigeration driver, a condenser and a refrigeration pipe 21, the refrigeration pipe 21 includes a refrigeration conveying section 211 and a return section 212 connected to an output end of the refrigeration conveying section 211, an output end of the refrigeration driver is connected to an input end of the refrigeration conveying section 211 through the condenser, and an output end of the return section 212 is connected to an input end of the refrigeration driver; the roadbed 1 is arranged on a seasonal frozen soil layer 6, the heat insulation board 4 is arranged in the roadbed 1 along the paving direction of the roadbed 1, the refrigeration conveying section 211 is arranged in the seasonal frozen soil layer 6 or the roadbed 1 and is positioned below the heat insulation board 4, and the loopback section 212 is arranged in the roadbed 1 and is positioned above the heat insulation board 4;
the main controller is respectively connected with the refrigerating device 2 and the electric energy supply device 3, and the electric energy supply device 3 supplies power for the main controller and the refrigerating device 2.
Illustratively, a temperature sensor is arranged on the pipe wall of the refrigerating pipe 21, the main controller is connected with the temperature sensor, the electric energy supply device 3 supplies power to the temperature sensor, a refrigerating temperature and a return difference temperature can be preset through the main controller, and when an actually measured temperature fed back by the temperature sensor is smaller than a difference between the set refrigerating temperature and the return difference temperature, the refrigerating device 2 stops working; otherwise, the refrigerating device 2 is started to carry out active refrigeration; in addition, the starting and stopping time of the refrigerating device 2 can be controlled through the main controller; the frozen soil roadbed protective structure can realize accurate cold supplement to the frozen soil roadbed 1, and freeze-thaw diseases of the permafrost roadbed 1 caused by too much or too little cold supply are avoided.
Illustratively, the electric energy supply device 3 is a photovoltaic power generation device, a wind power generation device or a photovoltaic wind power generation device; the refrigeration driver is a direct current compressor; a generator set (a photovoltaic panel, a wind driven generator and the like) of the electric energy supply device 3 is fixed on the ground surface through a metal bracket; the solar energy and wind power generation is environment-friendly, and off-grid power generation is adopted, so that the problem of mains supply in permafrost areas is solved; by adopting the direct current compressor, direct current generated by the electric energy supply device 3 can be directly applied without passing through an inverter, so that the electric quantity loss in the inversion process can be reduced on the one hand, and the equipment cost is also reduced on the other hand. Preferably, in this embodiment, the electric energy supply device 3 is preferably a photovoltaic power generation device, the photovoltaic power generation device includes a photovoltaic power generation panel and a photovoltaic controller, the photovoltaic controller is connected with the master controller, and the photovoltaic power generation panel is fixed at a certain height from the ground surface through a metal bracket, so that the influence of ground environmental factors and human factors on the power generation efficiency can be avoided; the output current of the photovoltaic power generation panel is direct current, the output voltage of a single photovoltaic power generation panel is generally 18V-36V, and the output voltage can be controlled to be 80V-380V by connecting a plurality of photovoltaic power generation panels in series so as to meet the direct current voltage condition of the refrigerating device 2.
Illustratively, a restrictor is arranged between the condenser and the refrigerating pipe 21; a closed-loop refrigeration loop is formed among the compressor, the condenser, the throttle valve and the refrigeration pipe 21, a refrigerant is filled in the closed-loop refrigeration loop, and the refrigeration pipe 21 is preferably a copper pipe; specifically, the compressor is a steam type direct current compressor; in practical application, typical permafrost regions such as the Qinghai-Tibet region and the northwest region often have severe cold climate and much strong wind, and the condenser is preferably an air-cooled condenser, so that the heat dissipation effect of the condenser is effectively improved; the flow restrictor is a capillary or an electronic throttle valve.
Exemplarily, frozen soil roadbed protective structure still includes protective housing 5, direct current compressor, condenser, flow controller and master controller set up in protective housing 5, convenient whole transportation transport and fixed mounting, the fretwork of 5 fronts and backs of protective housing can satisfy the condensation heat dissipation requirement.
Illustratively, the plurality of refrigeration pipes 21 are arranged along the width direction of the roadbed 1, the output port of the throttler is provided with a liquid separation head connected with the plurality of refrigeration conveying sections 211, so that the refrigeration conveying sections 211 can be conveniently arranged, and the refrigeration conveying sections 211 are connected with the returning section 212 through a plurality of Y-shaped tee joints or reducing tee joints; wherein, the application form of the refrigeration conveying section 211 can be a straight pipe or a spiral pipe; the application form of the loop-back section 212 is preferably a straight pipe.
Illustratively, the insulation board 4 is any one of an extruded polystyrene board (XPS), an expandable polystyrene insulation board (EPS) and a polyurethane insulation board (PU), and has good heat preservation and hydrophobicity, thereby playing an effective heat preservation and insulation role.
Illustratively, the exposed parts of the refrigeration conveying section 211 and the back conveying section 212 in the air are wrapped with heat insulation materials, so that the loss of refrigeration of the refrigeration pipe 21 is reduced.
Exemplarily, the frozen soil roadbed protective structure further comprises a wireless transmitter connected with the master controller, and the wireless transmitter can be connected with a remote terminal through a wireless network to feed back the real-time condition of the frozen soil roadbed protective structure.
Therefore, the roadbed 1 and the underlying seasonal frozen soil layer 6 and the perennial frozen soil layer 7 can be subjected to real-time cold supplement through the refrigerating device 2, so that the influence of the melting of the seasonal frozen soil layer 6 on the structure of the roadbed 1 is avoided, and the cold reserve of the underlying perennial frozen soil layer 7 of the roadbed 1 is increased; the loopback section 212 and the refrigeration conveying section 211 are respectively arranged at the upper side and the lower side of the heat-insulating plate 4, on one hand, the heat-insulating plate 4 can obstruct heat flow invasion of the earth surface and a side slope, on the other hand, the cold loss of the refrigeration conveying section 211 can be reduced, the loopback section 212 is arranged above the heat-insulating plate 4, and the temperature of the loopback section 212 is prevented from influencing the temperature of the refrigeration conveying section; therefore, the utility model can actively refrigerate to supplement the frozen soil layer in real time, ensure the stable structure of the roadbed and prevent the permafrost layer 7 from degrading.
In summary, in the description of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the terms "connected" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. The frozen soil roadbed protection structure is characterized by comprising a roadbed, a refrigeration device, an electric energy supply device and a main controller, wherein the refrigeration device comprises a refrigeration driver, a condenser and a refrigeration pipe, the refrigeration pipe comprises a refrigeration conveying section and a returning section connected with the output end of the refrigeration conveying section, the output end of the refrigeration driver is connected with the input end of the refrigeration conveying section through the condenser, and the output end of the returning section is connected with the input end of the refrigeration driver; the roadbed is arranged on a seasonal frozen soil layer, heat insulation plates are arranged in the roadbed along the paving direction of the roadbed, the refrigeration conveying section is arranged in the seasonal frozen soil layer or the roadbed and located below the heat insulation plates, and the loopback section is arranged in the roadbed and located above the heat insulation plates;
the main controller is respectively connected with the refrigerating device and the electric energy supply device, and the electric energy supply device supplies power for the main controller and the refrigerating device.
2. The frozen soil roadbed protective structure of claim 1, wherein the pipe wall of the refrigeration pipe is provided with a temperature sensor, the main controller is connected with the temperature sensor, and the electric energy supply device supplies power to the temperature sensor.
3. The frozen soil roadbed protective structure of claim 1, wherein the electric energy supply device is a photovoltaic power generation device, a wind power generation device or a photovoltaic wind power generation device; the refrigeration driver is a DC compressor.
4. The frozen soil roadbed protective structure of claim 3, wherein a restrictor is arranged between the condenser and the refrigerating pipe.
5. The frozen soil roadbed protective structure of claim 4, wherein the direct current compressor is a steam type direct current compressor, the condenser is an air-cooled condenser, and the throttling device is a capillary tube or an electronic throttling valve.
6. The frozen soil roadbed protective structure of claim 4, further comprising a protective shell, wherein the direct current compressor, the condenser, the throttler and the main controller are arranged in the protective shell.
7. The frozen soil roadbed protective structure of claim 1, wherein the refrigeration pipe is provided in a plurality of numbers and arranged in a width direction of the roadbed.
8. The frozen soil roadbed protective structure as claimed in claim 1, wherein the insulation board is any one of extruded polystyrene board, expandable polystyrene insulation board and polyurethane insulation board.
9. The frozen soil roadbed protective structure of claim 1, wherein the part of the refrigeration conveying section and the return conveying section exposed to the air is wrapped with an insulating material.
10. The frozen soil roadbed protective structure of claim 1, further comprising a wireless transmitter connected with the master controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122508224.1U CN216378977U (en) | 2021-10-18 | 2021-10-18 | Frozen soil roadbed protective structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122508224.1U CN216378977U (en) | 2021-10-18 | 2021-10-18 | Frozen soil roadbed protective structure |
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| Publication Number | Publication Date |
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| CN216378977U true CN216378977U (en) | 2022-04-26 |
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| CN202122508224.1U Active CN216378977U (en) | 2021-10-18 | 2021-10-18 | Frozen soil roadbed protective structure |
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| CN (1) | CN216378977U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114687337A (en) * | 2022-05-11 | 2022-07-01 | 交通运输部公路科学研究所 | A cold stick initiative cold conduction roadbed structure for Qinghai-Tibet plateau frozen soil district |
| CN116556235A (en) * | 2023-03-13 | 2023-08-08 | 中国科学院西北生态环境资源研究院 | Gear system for preventing and controlling hot-melt landslide in plateau frozen soil area |
-
2021
- 2021-10-18 CN CN202122508224.1U patent/CN216378977U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114687337A (en) * | 2022-05-11 | 2022-07-01 | 交通运输部公路科学研究所 | A cold stick initiative cold conduction roadbed structure for Qinghai-Tibet plateau frozen soil district |
| CN114687337B (en) * | 2022-05-11 | 2024-02-23 | 交通运输部公路科学研究所 | Cold bar active cold guide roadbed structure for frozen soil area of Qinghai-Tibet plateau |
| CN116556235A (en) * | 2023-03-13 | 2023-08-08 | 中国科学院西北生态环境资源研究院 | Gear system for preventing and controlling hot-melt landslide in plateau frozen soil area |
| CN116556235B (en) * | 2023-03-13 | 2023-09-29 | 中国科学院西北生态环境资源研究院 | Gear system for preventing and controlling hot-melt landslide in plateau frozen soil area |
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