CN111979966A - Plug-in type road ice and snow melting heat pipe and construction method - Google Patents
Plug-in type road ice and snow melting heat pipe and construction method Download PDFInfo
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- CN111979966A CN111979966A CN202010886357.XA CN202010886357A CN111979966A CN 111979966 A CN111979966 A CN 111979966A CN 202010886357 A CN202010886357 A CN 202010886357A CN 111979966 A CN111979966 A CN 111979966A
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- Prior art keywords
- heat pipe
- section
- pipe
- snow melting
- upper heat
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
- E01H5/00—Removing snow or ice from roads or like surfaces; Grading or roughening snow or ice
- E01H5/10—Removing snow or ice from roads or like surfaces; Grading or roughening snow or ice by application of heat for melting snow or ice, whether cleared or not, combined or not with clearing or removing mud or water, e.g. burners for melting in situ, heated clearing instruments; Cleaning snow by blowing or suction only
- E01H5/102—Self-contained devices for melting dislodged snow or ice, e.g. built-in melting chambers, movable melting tanks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
Abstract
The invention discloses a plug-in road ice and snow melting heat pipe and a construction method, and the technical scheme is as follows: the heat exchanger comprises a lower heat pipe and an upper heat pipe, wherein the lower heat pipe is connected with the upper heat pipe through a plug-pull heat exchange structure; wherein, plug heat transfer structure is pegged graft by lower heat pipe condensation segment and last heat pipe evaporation zone and is formed. The invention solves the problems that the road with the heat pipe is difficult to maintain and the heat pipe can not be reused, and greatly reduces the maintenance cost of the heat pipe road surface.
Description
Technical Field
The invention relates to the technical field of road ice and snow removal, in particular to a plug-in type road ice and snow melting heat pipe and a construction method.
Background
In winter, the probability of road traffic jam and traffic accidents is increased due to rain and snow disasters, and great potential safety hazards and great economic loss are brought to highway operation. Meanwhile, rainwater permeates into the pavement to cause frost heaving, and the service life of the pavement is also seriously influenced.
The prior art discloses a heat pipe formula ground temperature snow melt structure, utilizes the vertical evaporation zone of heat pipe to collect the geothermol power in the underground ground layer, and the horizontal condensation section of burying underground in the earth's surface is transmitted to the section of carrying, realizes that green initiative snow melt on ground is snow. The horizontal condensation section of the heat pipe is embedded in a pavement structure and is used for melting ice and snow on the road in winter.
However, in the engineering application process, the service life of the heat pipe is far longer than the road maintenance period (the major and middle repair period of the highway is 10-15 years, and the minor repair maintenance period is shorter according to the standard) by more than 30 years, and the heat pipe embedded in the pavement structure causes difficulty in road maintenance. Because the vertical evaporation section is fixed by cement mortar in a compact manner, the whole heat pipe cannot be pulled out for recycling, and only abandonment can be completely eliminated, which undoubtedly causes huge waste and brings great repeated investment.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a plug-in type road ice and snow melting heat pipe and a construction method, which solve the problems that the road with the heat pipe is difficult to maintain and the heat pipe cannot be reused, and greatly reduce the maintenance cost of the heat pipe road surface.
In order to achieve the purpose, the invention is realized by the following technical scheme:
in a first aspect, an embodiment of the present invention provides a plug-in type road ice and snow melting heat pipe, which includes a lower heat pipe and an upper heat pipe, wherein the lower heat pipe and the upper heat pipe are connected by a plug-in heat exchange structure; wherein, plug heat transfer structure is pegged graft by lower heat pipe condensation segment and last heat pipe evaporation zone and is formed.
As a further implementation mode, the lower heat pipe condensation section is provided with a circular truncated cone-shaped structure, and the upper heat pipe evaporation section is provided with an inwards concave structure matched with the circular truncated cone-shaped structure.
As a further implementation manner, a cavity is formed inside the lower heat pipe, and a gaseous inorganic heat-conducting medium is arranged in the cavity.
As a further implementation mode, the whole upper heat pipe is of an inverted L-shaped structure, and a liquid inorganic heat-conducting medium is arranged inside the upper heat pipe.
As a further implementation manner, the upper heat pipe includes a first pipe section and a second pipe section which are connected into a whole, and an included angle between the first pipe section and the second pipe section is greater than 90 °.
As a further implementation manner, the first pipe section is an upper heat pipe condensation section, the second pipe section comprises a first connecting portion and a second connecting portion, and the first connecting portion and the second connecting portion are connected through a telescopic adjusting device.
As a further implementation manner, the first connecting portion is an upper heat pipe conveying section, and the second connecting portion is an upper heat pipe evaporation section.
As a further implementation manner, the length of the plugging heat exchange structure is greater than one fourth of the length of the condensation section of the upper heat pipe.
In a second aspect, an embodiment of the present invention further provides a construction method for a plug-in type road ice and snow melting heat pipe, including: fixed point paying-off → drilling → hoisting, installing and fixing the lower heat pipe → recharging and curing cement mortar at the evaporation section of the lower heat pipe → positioning the upper heat pipe and connecting the plugging heat exchange structure → adjusting the telescopic adjusting device of the conveying section of the upper heat pipe, and making the elevation and the gradient of the condensing section of the upper heat pipe accord with the design requirements → fixing the upper heat pipe → constructing the transmission section of the lower heat pipe, plugging heat exchange structure and the heat preservation of the transmission section of the upper heat pipe → backfilling and curing the condensing section of the upper heat pipe → constructing the upper pavement structure.
As a further implementation mode, the lower heat pipe is not required to be pulled out in the later maintenance process, and the upper heat pipe is only required to be pulled out vertically and upwards integrally.
The beneficial effects of the above-mentioned embodiment of the present invention are as follows:
(1) the lower heat pipe in one or more embodiments of the invention is a vertical cavity structure, is integrally embedded in a rock-soil layer below a pavement structure, is used for absorbing geothermal heat and uploading the geothermal heat to the upper heat pipe, and takes on the functions of an evaporation section and a part of a conveying section in the whole road ice and snow melting heat pipe;
(2) the whole upper heat pipe in one or more embodiments of the invention is of an inverted L-shaped structure, a horizontal part (a first pipe section) is embedded in a pavement structure, a vertical part (a second pipe section) downwards passes through the pavement structure and is connected with a lower heat pipe, and the functions of a condensation section and a part of a conveying section are borne in the whole road ice and snow melting heat pipe; the upper heat pipe and the lower heat pipe are firmly connected and reliably transfer heat through the plugging heat exchange structure;
(3) the round platform-shaped structure arranged inside the pluggable heat exchange structure in one or more embodiments of the invention can facilitate the extraction and reinstallation of the upper heat pipe in the subsequent maintenance process of the road, the structure can not accumulate rock-soil particles, and the upper and lower heat pipes can still be tightly attached and exchange heat efficiently in the secondary installation process; the outer side of the plug heat exchange structure is reliably insulated, and heat basically cannot be lost at the part.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic block diagram of the present invention according to one or more embodiments;
FIG. 2 is an enlarged view of a plug heat exchange structure according to one or more embodiments of the present disclosure;
wherein, 1, a lower heat pipe; 2. an upper heat pipe; 3. plugging and unplugging the heat exchange structure; 3-1, a lower heat pipe condensation section; 3-2, gaseous inorganic heat-conducting medium; 3-3, an upper heat pipe evaporation section; 3-4, liquid inorganic heat-conducting medium; 4. a telescopic adjusting device.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;
for convenience of description, the words "up", "down", "left" and "right" in this application, if any, merely indicate correspondence with the directions of up, down, left and right of the drawings themselves, and do not limit the structure, but merely facilitate the description of the invention and simplify the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the application.
The terms "mounted", "connected", "fixed", and the like in the present application should be understood broadly, and for example, the terms "mounted", "connected", and "fixed" may be fixedly connected, detachably connected, or integrated; the two components can be connected directly or indirectly through an intermediate medium, or the two components can be connected internally or in an interaction relationship, and the terms can be understood by those skilled in the art according to specific situations.
The first embodiment is as follows:
this embodiment provides a plug-in road ice and snow melting heat pipe, as shown in fig. 1, including lower heat pipe 1, upper heat pipe 2 and plug heat exchange structure 3, lower heat pipe 1 and upper heat pipe 2 are connected through plug heat exchange structure 3.
The lower heat pipe 1 is a complete heat pipe and is made of a cold-drawn (rolled) seamless steel pipe, and a cavity is formed inside the lower heat pipe. The lower heat pipe 1 is internally provided with gaseous inorganic heat-conducting media 3-2, and the lower heat pipe 1 is provided with a perfect evaporation section, a perfect conveying section and a perfect condensation section.
The lower heat pipe 1 is divided into an upper part and a lower part, and the lower part of the lower heat pipe is an evaporation section and a conveying section which are of equal-diameter tubular structures and used for absorbing and conveying geothermal heat. The upper part of the lower heat pipe 1 is provided with a condensation section with a truncated cone structure, which is used for transferring heat to the upper heat pipe 2 and absorbing the cold of the upper heat pipe 2, and finally condensing and refluxing under the action of gravity. The lower heat pipe 1 takes on the functions of an evaporation section and a part of a conveying section in the whole pluggable road ice and snow melting heat pipe and is a heat source of the upper heat pipe 2.
The upper heat pipe 2 is also a complete heat pipe, the interior of the upper heat pipe is a cavity, liquid inorganic heat-conducting media 3-4 are contained in the cavity, and the upper heat pipe has a perfect evaporation section, a perfect conveying section and a perfect condensation section. Go up heat pipe 2 and wholly be the structure of falling L shape, go up heat pipe 2 and include first pipeline section, the second pipeline section of connecting as an organic whole, first pipeline section and second pipeline section adopt the circular arc transition, and the link contained angle of the two is greater than 90.
Wherein, the vertical setting of second pipeline section is divided into first connecting portion and second connecting portion again according to the difference of function, and first connecting portion are the transport section of last heat pipe 2, and the transport section outside should have reliably keeps warm, ensures that the heat does not run off at this part. First connecting portion and second connecting portion are connected through flexible adjusting device 4, can adjust the transport segment length, conveniently go up heat pipe 2 construction installation.
Furthermore, the telescopic adjusting device 4 may have various structural forms, such as a plug-in sealing structure, in which the outer diameter of the insertion portion is slightly smaller than the inner diameter of the inserted portion, an annular sealing ring is arranged between the two portions, and the sealing ring has good sealing performance and durability.
The second connecting part and the lower heat pipe condensation section 3-1 form a plug-pull heat exchange structure 3, and the second connecting part is an upper heat pipe evaporation section 3-3 and is used for absorbing heat from the lower heat pipe 2. The length of the plug-pull heat exchange structure 3 should be greater than one fourth of the length of the upper heat pipe condensation section 3-3. In order to avoid the overlarge outer diameter of the plugging heat exchange structure 3, the included angle between the generatrix of the circular truncated cone on the upper part of the lower heat pipe 1 and the vertical line is not easy to be overlarge, and generally the included angle is controlled to be about 2 degrees.
The first pipe section is a condensation section of the upper heat pipe 2 and is used for transferring heat to the pavement structure layer and condensing and refluxing under the action of gravity. As shown in fig. 2, the second connecting portion of the upper heat pipe 2 has an inward concave structure, the inward concave structure is matched with the circular truncated cone structure of the lower heat pipe condensation section 3-1, the two have the same gradient and are tightly attached to the side surface, sand and soil are not easily bonded, the connection is convenient and firm, the heat exchange is reliable, other additional connecting structures are not needed, and the heat exchange efficiency is good.
The upper heat pipe 2 is processed and manufactured by cold-drawn (rolled) seamless steel pipes except for the plugging heat exchange part, and the plugging heat exchange part is independently processed according to the upper circular truncated cone structure of the lower heat pipe 1. The upper heat pipe 2 bears the functions of part of the conveying section and the condensing section in the whole pluggable road ice and snow melting heat pipe, and is a heat source of a road structure and a cold source of the lower heat pipe 1.
Furthermore, the inner and outer walls of the upper heat pipe 2, the lower heat pipe 1 and the plug heat exchange structure 3 are all reliably corrosion-resistant, and the corrosion resistance has no adverse effect on heat transfer. The bottom of the lower heat pipe 1 is provided with a sharp-angled structure which is beneficial to the downward placement of the heat pipe, and the corrosion resistance of the part is enhanced.
The road active ice and snow melting system based on the heat pipes is characterized in that the evaporation and condensation gravity backflow heat transfer mechanism of the heat transfer working medium in the heat pipes is utilized to transfer the heat of deep soil to the ground to increase the temperature of a road surface, so that the maintenance-free, active and environment-friendly snow and ice melting of the road is realized. The embodiment solves the problems that the road with the heat pipes is difficult to maintain and the heat pipes cannot be reused through the evaporation, condensation, backflow and heat transfer circulation of the two heat pipes, and greatly reduces the maintenance cost of the road surface with the heat pipes.
Example two:
the embodiment provides a construction method of a plug-in type road ice and snow melting heat pipe, which mainly comprises the following implementation processes: fixed point paying-off → drilling → hoisting, installing and fixing of the lower heat pipe 1 → cement mortar recharging and curing of the evaporation section of the lower heat pipe 1 → positioning of the upper heat pipe 2 and connection of the plug-in heat exchange structure 3 → adjustment of the telescopic adjusting device 4 of the conveying section of the upper heat pipe, and making the elevation and gradient of the condensation section of the upper heat pipe 2 meet the design requirements → fixing of the upper heat pipe 2 → construction of the transmission section of the lower heat pipe 1, the plug-in heat exchange structure 3 and the transmission section of the upper heat pipe 2 heat preservation → backfilling and curing of the condensation section of the upper heat pipe 2 → construction of the upper.
In addition, in order to avoid causing troubles to the later maintenance of the road, the highest point of the lower heat pipe 1 is lower than the elevation of the lower surface of the pavement structure. For the convenience of pipe laying, the drilling depth should be at least 0.5m greater than the buried depth of the lower heat pipe 1, and the drilling diameter should be more than 2cm greater than the heat pipe diameter.
Preferably, the lower heat pipe 1 is a transmission sectionThe plug heat exchange structure 3 and the transmission section of the upper heat pipe 2 are insulated by adopting a polyurethane on-site foaming insulation mode, and the requirements are met: the volume filling rate is more than 98 percent, and the density is more than 35kg/m3The coefficient of thermal conductivity is less than or equal to 0.025W (m.K). The transverse distance between the heat pipes of the snow melting road is preferably 0.4 m; on the basis of balancing snow melting effect and ground temperature heat preservation, the embedding depth of the condensation section of the heat pipe 2 is preferably the top surface of the base layer or the lower surface layer.
The processing scheme of the road provided with the road ice and snow melting heat pipe in the first embodiment in the later maintenance process is as follows:
the lower heat pipe 1 is not required to be pulled out in the later maintenance process, and the upper heat pipe 2 is only required to be pulled out vertically and upwards integrally.
The following process is executed after the construction of the related pavement structure layer is carried out: the method comprises the following steps of maintaining a lower heat pipe condensation section 3-1, pulling out an upper heat pipe 2, preventing corrosion → connecting the upper heat pipe 2 in place and a plug-in heat exchange structure 3 → adjusting a telescopic adjusting device 4 of an upper heat pipe conveying section, enabling the elevation and the gradient of the upper heat pipe 2 condensation section to meet design requirements → fixing the upper heat pipe 2 → constructing a lower heat pipe 1 transmission section, the plug-in heat exchange structure 3 and the upper heat pipe 2 transmission section for heat preservation → backfilling and maintaining the upper heat pipe 2 condensation section (horizontal section) → constructing an upper pavement structure.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A plug-in road ice and snow melting heat pipe is characterized by comprising a lower heat pipe and an upper heat pipe, wherein the lower heat pipe is connected with the upper heat pipe through a plug-in heat exchange structure; wherein, plug heat transfer structure is pegged graft by lower heat pipe condensation segment and last heat pipe evaporation zone and is formed.
2. The pluggable road ice and snow melting heat pipe as claimed in claim 1, wherein the lower heat pipe condensation section has a truncated cone-shaped structure, and the upper heat pipe evaporation section has a concave structure matched with the truncated cone-shaped structure.
3. The pluggable road ice and snow melting heat pipe as claimed in claim 1, wherein a cavity is formed inside the lower heat pipe, and a gaseous inorganic heat-conducting medium is arranged in the cavity.
4. The pluggable road ice and snow melting heat pipe as claimed in claim 1, wherein the upper heat pipe is integrally of an inverted L-shaped structure, and a liquid inorganic heat-conducting medium is arranged inside the upper heat pipe.
5. The pluggable road ice and snow melting heat pipe as claimed in claim 4, wherein the upper heat pipe comprises a first pipe section and a second pipe section which are connected into a whole, and the included angle between the first pipe section and the second pipe section is greater than 90 °.
6. The pluggable road ice and snow melting heat pipe according to claim 4, wherein the first pipe section is an upper heat pipe condensation section, the second pipe section comprises a first connecting part and a second connecting part, and the first connecting part and the second connecting part are connected through a telescopic adjusting device.
7. The pluggable road ice and snow melting heat pipe according to claim 6, wherein the first connecting part is an upper heat pipe conveying section, and the second connecting part is an upper heat pipe evaporating section.
8. The pluggable road de-icing and snow-melting heat pipe as claimed in claim 1, wherein the length of the pluggable heat exchange structure is greater than one quarter of the length of the condensation section of the upper heat pipe.
9. The construction method of the pluggable road ice and snow melting heat pipe according to any one of claims 1 to 8, characterized by comprising the following steps: fixed point paying-off → drilling → hoisting, installing and fixing the lower heat pipe → recharging and curing cement mortar at the evaporation section of the lower heat pipe → positioning the upper heat pipe and connecting the plugging heat exchange structure → adjusting the telescopic adjusting device of the conveying section of the upper heat pipe, and making the elevation and the gradient of the condensing section of the upper heat pipe accord with the design requirements → fixing the upper heat pipe → constructing the transmission section of the lower heat pipe, plugging heat exchange structure and the heat preservation of the transmission section of the upper heat pipe → backfilling and curing the condensing section of the upper heat pipe → constructing the upper pavement structure.
10. The construction method of the pluggable road ice and snow melting heat pipe as claimed in claim 9, wherein the lower heat pipe is not required to be pulled out in the later maintenance process, and the upper heat pipe is only required to be pulled out vertically and upwards integrally.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010886357.XA CN111979966A (en) | 2020-08-28 | 2020-08-28 | Plug-in type road ice and snow melting heat pipe and construction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010886357.XA CN111979966A (en) | 2020-08-28 | 2020-08-28 | Plug-in type road ice and snow melting heat pipe and construction method |
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| CN205373376U (en) * | 2016-01-08 | 2016-07-06 | 山东鹏耀能源有限公司 | Superconductive formula heat pipe axle of heat |
| JP3206700U (en) * | 2016-07-20 | 2016-09-29 | 株式会社有我工業所 | Snow melting equipment |
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| CN110055853A (en) * | 2018-01-19 | 2019-07-26 | 山东省交通规划设计院 | A kind of honest formula bridge floor inorganic medium heat pipe snow-melting system of bridge and mounting arrangements method |
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| CN110134214A (en) * | 2019-05-29 | 2019-08-16 | 英业达科技有限公司 | Portable electronic devices |
| CN209619790U (en) * | 2019-01-28 | 2019-11-12 | 山东交通学院 | One kind being used for bituminous pavement underground heat heat-transfer tube layout stracture |
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| DE3103857A1 (en) * | 1981-02-05 | 1982-09-02 | Erno Raumfahrttechnik Gmbh, 2800 Bremen | Device for heat dissipation |
| CN201726630U (en) * | 2010-01-18 | 2011-01-26 | 奇鋐科技股份有限公司 | Heat conducting pipe bridging structure and radiating module thereof |
| CN102269534B (en) * | 2011-07-25 | 2012-11-28 | 天津空中代码工程应用软件开发有限公司 | Spiral-flow-type heat conducting pipe |
| CN104358204A (en) * | 2014-11-25 | 2015-02-18 | 井浩 | Energy-consumption-free system and method for regulating temperature of pavement to melt ice without energy consumption |
| CN204626312U (en) * | 2015-01-09 | 2015-09-09 | 吴心玉 | A kind of road surface automatic snow-melting device |
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Address after: 250031 No. 576 Wushanxi Road, Tianqiao District, Jinan City, Shandong Province Applicant after: Shandong transportation planning and Design Institute Group Co.,Ltd. Address before: 250031 No. 576 Wushanxi Road, Tianqiao District, Jinan City, Shandong Province Applicant before: Shandong transportation planning and Design Institute Co.,Ltd. |
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Application publication date: 20201124 |