JPH0660601U - Heat pipe panel type snow melting equipment for railroad tracks - Google Patents

Abstract

(57) [Summary] [Purpose] To quickly and efficiently melt snow on railway tracks. [Structure] The other end of the heat pipe 4, one end of which is brought into close contact with a heat source, is extended and arranged near the rail, and the other end of the heat pipe 4 is arranged on the ground surface near the rail 2. It is connected to the heat sink 1 so that heat can be transferred.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a snow melting device for melting snow on a railway line via a heat pipe.

[0002]

[Prior art]

 If there is a large amount of snow on the railroad track in a snowfall area, the operation of the train will be hindered. Therefore, snow removal on the tracks is an indispensable and important task in order to ensure the safety and accuracy of train operation.Therefore, conventionally, snow removal by a machine such as a Russell car or a method directly below the rail was used. The method of melting snow by the kerosene cantera was adopted.

[0003]

[Problems to be solved by the device]

 However, the Russell car is intended for large-scale and high-speed snow removal, and can remove snow efficiently on a straight track, but at the point where the rails intersect, equipment such as snow blades is used There was a risk that they would interfere with each other, so that it was not possible to invade the switching branch point (point part) and snow could not be removed from this part.

On the other hand, kerosene cantera is often misfired due to the wind pressure generated by the passage of a vehicle, and the snow melting area is small, and almost all snow is left outside the kerosene cantera. In other words, kerosene cantera is suitable for local snow melting, but is not suitable for snow melting in areas where there is some extent of spread, so when it is used for melting points, the number of uses increases, and Due to wind pressure and fuel shortage, a misfire occurred, which required inspections and snow removal work by workers, etc., and ultimately there was the inconvenience of not being able to remove snow quickly and efficiently.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a snow melting device for a railroad line that can perform uniform and wide range snow melting.

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention is arranged such that the other end of a heat pipe whose one end is in close contact with a heat source is extended near the rail, and the other end of the heat pipe is near the rail. It is characterized in that it is connected to a heat sink placed on the ground surface so that heat can be transferred.

[0007]

[Action]

 One end of the heat pipe, which is in close contact with the heat source, becomes an evaporation part, and the working fluid in the liquid phase enclosed in the vacuum degassed container is heated to become steam. The vapor flows to the other end where the pressure is low, where it is cooled, radiates heat and condenses. Then, the working fluid returns to the evaporator, and is heated again to become vapor. After that, the same cycle is repeated, and the working fluid continuously transfers heat. On the other hand, the heat released from the heat pipe is transferred to the heat sink that is in contact with the heat transfer, and is released to the atmosphere. As a result, the snow that is in contact with or near the heat sink is melted. In this way, heat can be transferred to a location away from the heat source by the heat pipe, and the linear heat radiation of the heat pipe can be converted to planar heat radiation by the heat radiation plate, so it is possible to secure a wide snow melting area while being compact. You can

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram schematically showing an arrangement state, in which a heat radiating plate 1 made of a copper plate or an aluminum alloy plate is arranged between a pair of rails 2 and under the rails 2. As shown in FIGS. 2 to 4, the heat dissipation plate 1 is attached in close contact with the upper surface of the heat transfer plate 3 made of a material having a high thermal conductivity. Note that two heat sinks 1 are installed at a distance slightly wider than the width of the rail 2 in consideration of ease of installation on the track, and are greatly extended to the front, rear, left and right to expand the snow melting area. . Inside the heat transfer plate 3, a heat pipe 4 is arranged so as to transfer heat to and from the heat transfer plate 3. As shown in FIGS. 5 and 6, the heat pipe 4 is composed of a double pipe portion 4a and two single pipe portions 4b branched from the double pipe portion 4a. An electric heater 5, which is a heat source, is inserted into the hollow portion formed in the center of the double pipe portion 4a so as to be able to exchange heat. Further, a heat insulating material 6 made of expanded polystyrene or the like is attached to the lower surface side of the single pipe portion 4b.

Next, the operation of the apparatus having the above-mentioned configuration will be described. The electric heater 5 is heated to a temperature of, for example, about 80 ° C. Therefore, the working fluid of the heat pipe 4 is overheated to become steam, which flows to the other end having a low pressure, that is, the single pipe portion 4b. , Where it is cooled, radiates heat and condenses. At that time, since the heat insulating material 6 is arranged below the single pipe portion 4b to block the electric heat to the lower side, wasteful heat dissipation is reduced. On the other hand, the heat released to the rail 2 side is transferred to the heat radiating plate 1 via the heat transfer plate 3, and is radiated from there to the atmosphere. As a result, the snow in contact with the heat sink 1 or the snow around it is melted.

The heat dissipation plate 1 may be a detachable type in order to replace it due to corrosion or damage and to adjust the increase or decrease of the snow melting area. One example is a method of fixing the heat dissipation plate 3 to the heat transfer plate 3 with bolts.

Further, although the electric heater 5 is used as the heat source in the above-mentioned embodiment, the present invention is not limited to the above-mentioned embodiment, and a metal whose one end is sealed in the hollow portion of the double pipe portion 4a is used. It is also possible to insert a pipe in close contact so that heat can be transferred, and inject hot water into it to use it as a heat source.

[0012]

[Effect of device]

 As described above, according to the heat pipe panel type snow melting device for a railroad track of the present invention, the heat pipe conveys heat to a location away from the heat source, and the heat radiating plate converts the linear heat of the heat pipe into a plane. Since it can be released in a compact manner, it is possible to remove snow on a track quickly and easily because it is compact, and it is possible to melt snow in a detailed and uniform and wide area that was conventionally done by hand. Not only can the load on the train be reduced, but the accuracy of train operation can be secured and safety can be improved.

[Brief description of drawings]

FIG. 1 is a schematic view showing an embodiment of the present invention.

FIG. 2 is a perspective view showing an example of the structure of the present invention.

3 is a sectional view taken along line III-III in FIG.

4 is a sectional view taken along line IV-IV of FIG.

FIG. 5 is a cross-sectional view of a part of the heat pipe.

FIG. 6 is a vertical cross-sectional view of a part of the heat pipe.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Radiating plate, 2 ... Rail, 3 ... Heat transfer plate, 4 ... Heat pipe, 4a ... Double pipe part, 4b ... Single pipe part, 5 ...
Electric heater, 6 ... Insulation material.

Continuation of the front page (72) Tadao Yamada 1007 Izumisawa, Chitose City, Hokkaido 151 151 Fujikura Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. The other end of a heat pipe, one end of which is in close contact with a heat source, is arranged so as to extend near the rail, and the other end of the heat pipe is arranged on the ground surface near the rail. A heat pipe panel type snow melting device for a line, which is connected to a heat radiating plate so that heat can be transferred.