CN108601129B - Ice and snow melting electromagnetic heating system - Google Patents
Ice and snow melting electromagnetic heating system Download PDFInfo
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- CN108601129B CN108601129B CN201711483835.7A CN201711483835A CN108601129B CN 108601129 B CN108601129 B CN 108601129B CN 201711483835 A CN201711483835 A CN 201711483835A CN 108601129 B CN108601129 B CN 108601129B
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/36—Coil arrangements
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/06—Control, e.g. of temperature, of power
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/36—Coil arrangements
- H05B6/44—Coil arrangements having more than one coil or coil segment
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2214/00—Aspects relating to resistive heating, induction heating and heating using microwaves, covered by groups H05B3/00, H05B6/00
- H05B2214/02—Heaters specially designed for de-icing or protection against icing
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Road Paving Structures (AREA)
- Cleaning Of Streets, Tracks, Or Beaches (AREA)
Abstract
The invention discloses an ice and snow melting electromagnetic heating system which comprises a high-frequency current generator and a plurality of electromagnetic heating devices pre-embedded in a road surface or a bridge floor, wherein each electromagnetic heating device comprises a protective shell, an electromagnetic coil, a heating metal carrier and a temperature sensor, and the temperature sensor is used for monitoring the temperature change of the heating metal carrier; the protective shell is a groove body, a raised electromagnetic coil pile is arranged on the bottom surface of the protective shell, the electromagnetic coil is wound on the electromagnetic coil pile, a high-strength heat insulation layer is laid on the electromagnetic coil, a heating metal carrier is placed on the high-strength heat insulation layer, and the high-strength heat insulation layer is coated on the bottom surface and the periphery of the heating metal carrier; the upper surfaces of the protective shell, the high-strength heat-insulating layer and the heating metal carrier are parallel and level; the electromagnetic coils of the electromagnetic heating devices are connected through copper wires to form an electromagnetic heating system. The invention utilizes the high-frequency alternating magnetic field generated by the high-frequency current flowing into the electromagnetic coil, and when the magnetic induction lines pass through the steel sheet, a large amount of dense eddy currents are generated in the steel sheet to rapidly heat the steel sheet, thereby heating the ice and snow on the road surface or the bridge floor.
Description
Technical Field
The invention relates to the field of ice and snow melting, in particular to an electromagnetic heating system for melting ice and snow, which is characterized in that a high-frequency alternating magnetic field generated by a high-frequency current flowing into an electromagnetic coil is utilized, when a magnetic induction line passes through a steel sheet, a large amount of dense eddy currents are generated inside the steel sheet, so that the steel sheet is rapidly heated, and the electromagnetic heating system heats an ice and snow melting road surface and a bridge floor of the road surface.
Background
In snow disasters or freezing areas, snow and ice often appear on road surfaces, airport pavement and bridge floors, and the incidence rate of vehicle accidents in special sections such as large longitudinal slopes, bridge floor ramps, turns and the like also tends to rise, so that the normal traveling of residents is seriously influenced, and even life risks are caused. Therefore, the research of timely melting ice and snow on the road has important significance for the normal life and property safety of people. The common road snow and ice melting modes at present mainly comprise the following modes:
(1) and (5) manually removing ice and snow. The manual ice and snow removing means that the snow on the road surface is removed manually by adopting simple tools such as shovels, shovels and the like. The method is flexible and convenient, but needs to consume a large amount of manpower and material resources, and the traffic can be recovered to be normal only after a certain lag time.
(2) And (5) mechanically removing ice and snow. The mechanical ice and snow removal means that the ice and snow in the road are removed outside the road range by adopting a machine with a large area. The method has the advantages of large workload and high speed, but the method has high early investment, great influence by seasons, no long-term operation, low use frequency and easy permanent damage to the pavement.
(3) The snow-melting agent removes ice and snow. The principle of the snow-melting agent is that the snow-melting agent such as salt is scattered to lower the freezing point of the road surface, so as to achieve the purpose of melting snow and ice. The method has the characteristics of simplicity and convenience, and is a method for melting ice and snow which is widely used at home and abroad at present. It is statistically up to 1300 million tons of snow-melting agent for melting snow and ice on roads in the united states every year. However, the long-term use of a large amount of salt snow-melting agents can easily cause salinization of soil, deteriorate the living environment of vegetation, corrode reinforcing steel bars, and cause permanent damage to pavement and the like. The newly developed environment-friendly snow-melting agent does not contain sodium chloride, has small influence on the environment and roads, but is expensive, and is generally 3-4 times of the common snow-melting agent.
(4) Energy conversion type ice and snow melting road surface. The energy conversion type ice and snow melting road surface refers to a road which converts solar energy, a soil heat source, electric energy and the like into heat energy. The method has clean energy and environment protection, but has low energy utilization rate and poor ice and snow melting effect, and is difficult to solve the fundamental problem.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides the ice and snow melting electromagnetic heating system, which utilizes a high-frequency alternating magnetic field generated by the fact that high-frequency current flows into an electromagnetic coil, and when magnetic induction lines pass through a steel sheet, a large amount of dense eddy currents are generated inside the steel sheet to rapidly heat the steel sheet, so that ice and snow on a road surface or a bridge deck are heated.
In order to solve the technical problems, the invention adopts the following technical scheme:
an ice and snow melting electromagnetic heating system comprises a high-frequency current generator 10 and a plurality of electromagnetic heating devices 1 pre-buried in a road surface or a bridge floor, wherein each electromagnetic heating device 1 comprises a protective shell 2, an electromagnetic coil 3, a heating metal carrier 5 and a temperature sensor 6, and the temperature sensor 6 is used for monitoring the temperature change of the heating metal carrier 5; the protective shell 2 is a groove body, a raised electromagnetic coil pile 9 is arranged on the bottom surface of the protective shell 2, the electromagnetic coil 3 is wound on the electromagnetic coil pile 9, a high-strength heat insulation layer 4 is paved on the electromagnetic coil 3, a heating metal carrier 5 is placed on the high-strength heat insulation layer 4, and the high-strength heat insulation layer 4 is coated on the bottom surface and the periphery of the heating metal carrier 5; the upper surfaces of the protective shell 2, the high-strength heat-insulating layer 4 and the heating metal carrier 5 are flush; the electromagnetic coil 3 of each electromagnetic heating device 1 is connected with a high-frequency current generator 10 through a copper wire to form an electromagnetic heating system.
The thickness of the electromagnetic heating device 1 is H, the thickness H of the electromagnetic heating device 1 is less than or equal to the thickness H of the paved layer minus 2.5 times of the maximum nominal diameter r of the aggregate of the paved layermaxI.e. H is less than or equal to H-2.5rmax。
An electromagnetic shielding adhesive tape 7 is adhered to the outer side of the protective shell 2.
The upper surface of the electromagnetic heating device 1 is coated with an ultrathin waterproof heat-conducting daub layer 8.
The diameter of each copper wire is 2.2mm, and the copper wires are formed by stranding a plurality of enamelled copper wires with the diameter of 0.4 mm.
The input current of the electromagnetic heating device 1 is I, the single heating working time is t, the value range of I is 17.5-25A, and the value range of t is 8-15 s.
The height of the electromagnetic coil pile 9 is consistent with the thickness of the electromagnetic coil 3, and the electromagnetic coil 3 is wound from inside to outside in a concentric circle winding mode by utilizing copper wires until the bottom surface of the protective shell 2 is full of the copper wires.
The temperature sensor 6 is disposed around the heat-generating metal carrier 5.
Compared with the prior art, the invention has the following beneficial technical effects:
1. the electromagnetic shielding adhesive tapes are adhered to the periphery and the bottom of the protective shell of the electromagnetic heating device, so that the overflow of magnetic lines of force and the loss of magnetic energy can be reduced, the utilization efficiency of energy is improved, meanwhile, the bridge structure is protected, the strength reduction caused by the heating of the bridge steel structure due to the eddy generated by the alternating electric field is avoided, and the safety of the bridge structure is ensured; high-strength asbestos cloth is arranged between the electromagnetic coil and the steel sheet, insulation and heat insulation are realized, and after the steel sheet is heated, heat can only be transferred upwards, so that the energy utilization rate is improved; the ultrathin waterproof heat-conducting daub layer is coated on the top of the electromagnetic heating device, so that the electromagnetic heating device is good in heat-conducting performance, waterproof, anticorrosive and capable of protecting the internal structure of the electromagnetic heating device.
2. The electromagnetic heating devices of the electromagnetic heating system are distributed in a staggered manner, so that the overlapping of heating ranges among the devices can be reduced to the greatest extent, the heating is more uniform, the utilization efficiency of energy is improved, and the damage to the bridge deck structure caused by temperature gradient can be reduced.
3. The electromagnetic heating device heats the heating metal carrier by using the electromagnetic coil according to the electromagnetic induction principle, the heating rate is high, and the electromagnetic field generated by the alternating current only plays a role in the heating metal carrier, so the energy utilization rate is high.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention.
Fig. 2 is a schematic structural diagram of an electromagnetic heating device according to the present invention.
Detailed Description
Referring to the attached drawings, the ice and snow melting electromagnetic heating system comprises a high-frequency current generator 10 and a plurality of electromagnetic heating devices 1 pre-embedded in a road surface or a bridge floor, wherein each electromagnetic heating device 1 comprises a protective shell 2, an electromagnetic coil 3, a heating metal carrier 5 and a temperature sensor 6, and the temperature sensor 6 is used for monitoring the temperature change of the heating metal carrier 5; the protective shell 2 is a groove body, a raised electromagnetic coil pile 9 is arranged on the bottom surface of the protective shell 2, the electromagnetic coil 3 is wound on the electromagnetic coil pile 9, a high-strength heat insulation layer 4 is paved on the electromagnetic coil 3, a heating metal carrier 5 is placed on the high-strength heat insulation layer 4, and the high-strength heat insulation layer 4 is coated on the bottom surface and the periphery of the heating metal carrier 5; the upper surfaces of the protective shell 2, the high-strength heat-insulating layer 4 and the heating metal carrier 5 are flush; the electromagnetic coils 3 of the electromagnetic heating devices 1 are connected with a high-frequency current generator 10 through copper wires to form an electromagnetic heating system; the thickness of the electromagnetic heating device 1 is H, the thickness H of the electromagnetic heating device 1 is less than or equal to the thickness H of the paved layer minus 2.5 times of the maximum nominal diameter r of the aggregate of the paved layermaxI.e. H is less than or equal to H-2.5rmax(ii) a An electromagnetic shielding adhesive tape 7 is stuck to the outer side of the protective shell 2; the upper surface of the electromagnetic heating device 1 is coated with an ultrathin waterproof heat-conducting daub layer 8; the diameters of the copper wires are 2.2mm, and the copper wires are formed by stranding a plurality of enamelled copper wires with the diameters of 0.4 mm; the input current of the electromagnetic heating device 1 is I, the single heating working time is t, the value range of I is 17.5-25A, and the value range of t is 8-15 s; the height of the electromagnetic coil pile 9 is consistent with the thickness of the electromagnetic coil 3, and the electromagnetic coil 3 is wound from inside to outside in a concentric circle winding mode by utilizing copper wires until the bottom surface of the protective shell 2 is full of the copper wires.
Claims (5)
1. An ice and snow melting electromagnetic heating system is characterized in that: the device comprises a high-frequency current generator (10) and electromagnetic heating devices (1) which are pre-embedded in a road surface or a bridge deck and are distributed in a staggered mode, wherein each electromagnetic heating device (1) comprises a protective shell (2), an electromagnetic coil (3), a heating metal carrier (5) and a temperature sensor (6), and the temperature sensor (6) is used for monitoring the temperature change of the heating metal carrier (5) so as toAnd the ultrathin waterproof heat-conducting daub layer (8) is coated on the upper surface of the base; the electromagnetic shielding heat insulation structure is characterized in that the protective shell (2) is a groove body, an electromagnetic shielding adhesive tape (7) is adhered to the outer side of the protective shell, a raised electromagnetic coil pile (9) is arranged on the bottom surface of the protective shell (2), the electromagnetic coil (3) is wound on the electromagnetic coil pile (9), a high-strength heat insulation layer (4) is laid on the electromagnetic coil (3), a heating metal carrier (5) is placed on the high-strength heat insulation layer (4), and the high-strength heat insulation layer (4) is coated on the bottom surface and the periphery of the heating metal carrier (; the upper surfaces of the protective shell (2), the high-strength heat-insulating layer (4) and the heating metal carrier (5) are flush; the electromagnetic coils (3) of the electromagnetic heating devices (1) are connected with the high-frequency current generator (10) through copper wires to form an electromagnetic heating system, the thickness of each electromagnetic heating device (1) is H, and the thickness H of each electromagnetic heating device (1) is less than or equal to the thickness H of the paved layer minus 2.5 times of the maximum nominal diameter r of the paved layer aggregatemaxI.e. H is less than or equal to H-2.5rmax。
2. The electromagnetic heating system for melting ice and snow according to claim 1, wherein the diameters of the copper wires are all 2.2mm, and the heating system is formed by stranding a plurality of strands of enameled copper wires with the diameters of 0.4 mm.
3. The electromagnetic heating system for melting ice and snow according to claim 1, wherein the input current of the electromagnetic heating device (1) is I, the single heating working time is t, the value range of I is 17.5-25A, and the value range of t is 8-15 s.
4. The electromagnetic heating system for melting ice and snow according to claim 1, characterized in that the height of the electromagnetic coil pile (9) is consistent with the thickness of the electromagnetic coil (3), and the electromagnetic coil (3) is wound from inside to outside in a concentric circle winding manner by using copper wires until the bottom surface of the protective shell (2) is filled.
5. Ice and snow melting electromagnetic heating system according to claim 1, characterized in that said temperature sensor (6) is arranged around a heat generating metal carrier (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711483835.7A CN108601129B (en) | 2017-12-29 | 2017-12-29 | Ice and snow melting electromagnetic heating system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711483835.7A CN108601129B (en) | 2017-12-29 | 2017-12-29 | Ice and snow melting electromagnetic heating system |
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| CN108601129A CN108601129A (en) | 2018-09-28 |
| CN108601129B true CN108601129B (en) | 2020-12-25 |
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| CN201711483835.7A Active CN108601129B (en) | 2017-12-29 | 2017-12-29 | Ice and snow melting electromagnetic heating system |
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| CN112362523B (en) * | 2020-10-27 | 2022-12-09 | 合肥工业大学 | Energy utilization rate evaluation method of induction heating functional pavement based on ice melting test |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2006004828A (en) * | 2004-06-18 | 2006-01-05 | Haidetsuku Kk | Flat induction heating device |
| CN2773151Y (en) * | 2005-02-06 | 2006-04-19 | 董陆长 | Snow-removing and anti-skidding electromagnetic induction heater on roadface and bridge in winter |
| CN101280554A (en) * | 2007-04-02 | 2008-10-08 | 上海奇谋能源技术开发有限公司 | Method for melting road surface ice and snow and road |
| CN105019331A (en) * | 2015-08-03 | 2015-11-04 | 科莱斯（天津）电热科技有限公司 | Intelligent electric induction snow and ice melting system |
| CN105648875A (en) * | 2016-02-02 | 2016-06-08 | 吴婷婷 | Airplane anti-icing runway |
| CN106255247B (en) * | 2016-11-05 | 2019-03-29 | 河南理工大学 | A kind of uniform electromagnetic induction heating plate of surface temperature |
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- 2017-12-29 CN CN201711483835.7A patent/CN108601129B/en active Active
Non-Patent Citations (1)
| Title |
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| 王宇军.电热法用于水泥混凝土路面融雪化冰技术研究.《硕士论文工程科技II辑》.2015,C034-103. * |
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Inventor after: Liu Kai Inventor after: Huang Silu Inventor after: Li Yao Inventor after: Dai Dongling Inventor after: Wu Shaopeng Inventor after: Liu Quantao Inventor after: Li Linglin Inventor after: Xie Hongzhou Inventor after: Zhang Xiang Inventor after: Fu Chaoliang Inventor after: Wang Fang Inventor before: Liu Kai Inventor before: Dai Dongling Inventor before: Li Linglin Inventor before: Xie Hongzhou Inventor before: Zhang Xiang Inventor before: Fu Chaoliang Inventor before: Wang Fang Inventor before: Huang Silu Inventor before: Li Yao |
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