JPH074501U - Snow melting equipment for railway tracks - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a snow melting device for a railroad track, which can safely and reliably remove snow on the railroad track and sufficiently. [Structure] A heating medium circulation path such as a heat pipe 11 or a hot water circulation pipe is formed in a rail supporting concrete layer 3 laid under a rail 1 for a railroad track,
A heater 12 that provides the heat of the heating medium is provided. Therefore, as the temperature of the concrete layer 3 rises, the snow around the railroad track is melted and snow is prevented.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a snow melting device for a railroad track that melts snow on the railroad track.

[0002]

[Prior art]

 In a snowfall area, a large amount of snow is also generated on a railway line (hereinafter referred to as a line), and this snowfall tends to hinder the progress of trains and vehicles. Therefore, in snowy areas, various measures to remove snow and melt snow are taken to eliminate snow on the tracks. For example, as a countermeasure against these problems, a Russell car is run on the track to mechanically remove snow from the track, or a plurality of kerosene-fired canteras are installed on the track, and the heat of the cantera causes the There are cases such as melting snow.

[0003]

[Problems to be solved by the device]

 However, the snow removal method using the Russell car has a problem that the Russell car cannot fully remove the snow on the track because the Russell car cannot enter the branch point where the rails intersect. Also, with the snow melting method by the cantera, it is necessary to manually ignite and extinguish the cantera during each snowfall, and there is a safety problem in work such as occurrence of contact with a traveling train during work, and There was a risk that the Cantera fire would be extinguished when the train passed, and there would be no reliable snowmelt on the track.

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 track that can safely and reliably remove snow on the railroad track. .

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention forms a heating medium circulation path in a rail supporting concrete layer laid under a rail for railroad tracks, and provides a heating source for applying heat to the heating medium. It is characterized by being provided.

[0006]

[Action]

 In the device of this invention, the heating medium is heated by the heating source during snowfall. The heating medium gives heat to the concrete layer to heat it while flowing inside the circulation path, so that the snow adhering to the concrete layer is immediately melted and thus hinders running on the track. It prevents snowfall.

[0007]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view around a rail of a railroad track (hereinafter referred to as a railroad track) showing an embodiment of the present invention, in which reference numerals 1A and 1B indicate a pair of rails for parallel railroad tracks. The pair of rails 1A and 1B are positioned and attached by the fastening device 2 on the concrete panel 3 to which the heat pipe type snow melting device 10 is attached.

The rail 1 is formed in a predetermined shape for running a railroad train or vehicle, and the distance (gauge) between the pair of rails 1A and 1B is also set to a predetermined length. The fastening device 2 is provided at a predetermined pitch in the longitudinal direction of the rail 1. For example, a tie plate 2a on which the rail 1 is placed and positioned, and a pair of fastening bolts for fixing the tie plate 2a to the concrete panel 3. 2a, 2b, etc., and as shown in FIG. 2, the rail 1 is positioned on the concrete panel 3 in a state of being slightly raised above the surface of the concrete panel 3.

The concrete panel 3 forms a concrete layer for railroad tracks for supporting the pair of rails 1A and 1B, and can support the load of a train or a vehicle traveling on the pair of rails 1A and 1B. Sufficient strength is maintained by having reinforcing bars inside. Further, the concrete panel 3 has a width W in the width direction to determine the range of snowmelt, and a length L in the longitudinal direction of the line in consideration of ease of transportation. The heat pipe type snow melting device 10 is attached in advance in a factory or the like and manufactured into a predetermined shape, which is laid in the longitudinal direction of the track to be installed in the track. The concrete panel 3 is installed by directly positioning and fixing it on the roadbed of the track, or by positioning and fixing it in the roadbed (for example, crushed stone) on the roadbed.

The heat pipe type snow melting device 10 forms a circulation path for accommodating a heating medium. The heat pipe 11 has a closed tube on one end side as a header, and an electrical device installed in the header. It is composed of a heater 12. The heat pipe 11 is composed of an evaporation section 11a whose closed tube forms a header and a plurality of condensation sections 11b branched from the evaporation section 11a at a predetermined pitch. It is arranged on one side of the concrete panel 3 along the direction, and the electric heater 12 is attached to the central portion thereof. The heat pipe 11 has a compression portion 11b which serves as a heating means for snow melting, and is embedded in the concrete panel 3 so as to extend in the width direction of the line. From the evaporation portion 11a side to the end portion side. The concrete panel 3 is arranged so as to be inclined slightly upward. The evaporating portion 11a side of the condensing portion 11b is bent downward and then connected to the evaporating portion 11a.

Here, the heat pipe 11 is a vacuum degassed closed tube in which a fluid such as CFC or alcohol that evaporates and condenses in a target temperature range is enclosed as a working fluid. The working fluid is evaporated by the heat absorption from the working fluid, the vapor is moved to the condensing portion 11b, and the working fluid is condensed and liquefied in the condensing portion 11b, so that the heat is released into the concrete panel 3. Further, the liquid recirculation of the working fluid from the condensing part 11b to the evaporating part 11a can be performed by the action of gravity when the condensing part 11b is on the upper side with respect to the evaporating part 11a as in this embodiment. However, if necessary, a wick (capillary structure) may be provided in the heat pipe 11 to perform liquid reflux by this wick.

The heat generation capacity of the electric heater 12 and the arrangement pitch of the condenser section 11b of the heat pipe 11 in the longitudinal direction of the track are appropriately determined based on the temperature and the amount of snowfall so that the snow on the track can be sufficiently melted. Can be set.

Next, the operation of the heat pipe type snow melting device 10 will be described. If there is snowfall when the temperature is low such as in winter, snow will also adhere to the concrete panel 3 of this track. In this case, when the electric heater 12 of the heat pipe type snow melting device 10 is energized, the liquid working fluid in the evaporation portion 11a of the heat pipe 11 is heated and evaporated by the electric heater 12, and the vapor is dispersed in the concrete panel 3. To the condenser section 11b side. Then, the working fluid vapor reaching the condensing portion 11b releases its heat into the concrete panel 3 to condense and liquefy, and then is returned to the evaporating portion 11a side by the action of gravity or the like. By repeating evaporation and condensation of the working fluid in the heat pipe 11, the heat from the electric heater 12 is transported into the concrete panel 3 and the concrete panel 3 as a whole is heated. Even if there is any, this snow is immediately melted and flows through the gap between the rail 1 and the concrete panel 3 to the side of the track as water.

As described above, the condensing part 11b of the heat pipe 11 which is a heating means for snow melting is embedded in the concrete panel 3 which supports the rail 1 of the railroad track, and the heat from the electric heater 12 is introduced into the concrete panel 3. Since the snow is released and then used to melt snow on the track, compared to the conventional method of melting snow using a cantera, it is possible to safely melt snow without the need for a person to go to the track and at the time of melting snow on the track. There is no inconvenience that snow can be blown out by trains and snow cannot be reliably melted. Moreover, if the rail 1 is supported by the concrete panel 3 to which the heat pipe type snow melting device 10 is attached, the snow can be melted at any place on the track, and the snow can be removed like a Russell car. There is no difficult place. Furthermore, since the concrete panel 3 is heated by the heat pipe 11 using the latent heat of the working fluid, the concrete panel 3 is uniformly heated, and uniform snow melting is performed in the longitudinal direction of the track.

The heating source is replaced with the electric heater described above, and the sealed tube of the evaporation section 11 a of the heat pipe 11 is a double tube, and hot water is caused to flow to the inner tube side, and this hot water causes the heat pipe 11 to cool. You may comprise so that the evaporation part 11a may be heated.

Further, in this invention, as shown in FIG. 3, the concrete panel 3 is provided with a concave portion 3a for fixing the sleeper 4, and the sleeper 4 is positioned and fixed in the concave portion 3a, as shown in FIG. As described above, the rails 1 may be directly supported by the sleepers 4. In this case, since the sleeper 4 can transmit the load applied to the rail 1 to the concrete panel 3 more uniformly, the design of the concrete panel 3 can be facilitated. Since the sleeper 4 is heated by the concrete panel 3, snow does not occur on the sleeper 4.

Also, hot water can be used as a heating medium. For example, as shown in FIG. 5, a hot water circulation pipe 5 serving as a heating means for snow melting is embedded in the concrete panel 3 and, at the time of snowfall, Even if the hot water heated by the heating source (not shown) is passed through the hot water circulation pipe 5 by the pump (not shown) to melt the snow on the concrete panel 3 of the track, It is possible to obtain the same effect as when the pipe type snow melting device 10 is used. In this case, too, the concrete panel 3 may be provided with a recess for sleepers, and the sleepers may be attached to the recesses so that the rail 1 is directly supported by the sleepers.

Further, concrete having a predetermined strength is directly placed under the rail 1 without using the concrete panel 3, and the condensing portion 11b of the heat pipe 11 of the heat pipe type snow melting device 10 and the hot water circulation are placed in the concrete layer. Even if the pipe 5 is embedded, the same effect can be obtained. Also in this case, a recess may be provided on the concrete layer, and a sleeper may be attached to this recess so that the rail 1 is directly supported by the sleeper.

[0019]

[Effect of device]

 As is clear from the above description, according to the present invention, since the circulation layer for flowing the heating medium to be heated is provided in the concrete layer for rail support laid under the rail for railroad tracks, With this heating medium, the heat carried can ensure and sufficient melting of snow on the track through the concrete layer. In addition, it is possible to ensure safety because it is not necessary for workers to enter the track when snow is melting on the track.

[Brief description of drawings]

FIG. 1 is a perspective view around a rail of a track showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line II-II of FIG.

FIG. 3 is a perspective view around a concrete panel under a rail showing another embodiment of the present invention.

FIG. 4 is a side view showing a case where a sleeper is attached to the concrete panel shown in FIG. 3 to support the rail.

FIG. 5 is a perspective view around a rail of a line showing another embodiment of the present invention.

[Explanation of symbols]

 1 rail 3 concrete panel 5 hot water circulation pipe 10a heat pipe condensing part 11 heat pipe

Continuation of the front page (72) Tadao Yamada, Inventor Fujikura, 1-5-1, Kiba, Koto-ku, Tokyo

Claims (1)

[Scope of utility model registration request] 1. A railway characterized in that a heating medium circulation path is formed in a rail supporting concrete layer laid under a rail for railroad tracks, and a heating source for applying heat to the heating medium is provided. Snow melting equipment for railroad tracks.