JPH05148807A - Railway snow-melting apparatus - Google Patents

Abstract

PURPOSE:To make snow melting executable in a wide area and to make emergencies happening to heat sources dealt with appropriately by a method wherein a snow-melting apparatus is constructed of main heat sources, an auxiliary heat source, pipes forming circulatory passages for heat medium liquid, and heat-generating panels. CONSTITUTION:A railway snow-melting apparatus B, constructed of main heat sources 6, 6, heat-generating panels 7, 7 placed over ballasts between sleepers 1, 1 around points 4, and pipes 8, 8 forming circulatory passages for heat medium liquid, is equipped with an auxiliary heat source 9 having branch supply pipes 14 and branch return pipes 17 that are connected to one of the circulatory passages of the heat sources 6. The auxiliary heat source 9 is available for working in an emergency where a breakdown or the like happens to the main heat sources 6, and the emergency can be dealt with immediately with the heat medium liquid supplied in circulation to the pipes 8. Thereby, troubles such as suspending railcar services for long hours can be avoided while running costs for the apparatus can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a snow melting device for a railroad track, which melts snow at a point portion of a track by utilizing circulation of a heat medium liquid.

[0002]

2. Description of the Related Art At present, at a point portion of a track in a snowfall area, a duct is installed outside a basic rail in order to prevent the point from being inoperative due to snowfall.
A hot air type snow melting device that melts snow by sending hot air from a combustor to the duct to warm the rail from the outside, and an electric heating element attached to a basic rail as disclosed in JP-A-63-125701. An electric heating type snow melting device is used that melts snow by energizing this electric heating element to warm the rail.

[0003]

By the way, in the case of the hot-air type snow melting apparatus, since a large-diameter duct having a large surface area is required because heat is transferred by air, not only the heat dissipation loss increases but also There is a problem that it is difficult to recover heat and efficient snow melting cannot be performed, and there is a problem that it is difficult to melt snow between the basic rails on which the tongue rails are placed. On the other hand, in the case of the electric heating type snow melting apparatus, there is a problem that heat loss to the atmosphere is large, snow melting in a wide range is difficult, power consumption is large, and running cost is very high.

Therefore, a plurality of heat generating panels are laid on the blast (gravel laid on the line) over a desired range of the line, and a pipe for passing a heat medium liquid circulated from a heat source machine such as a petroleum boiler is used. The above-mentioned problems can be solved by raising the temperature of each heating panel to warm the periphery of the rail. However, when an abnormal situation such as a malfunction of the heat source device suddenly occurs, it takes time to repair the heat source device, and there is a concern that the operation of the vehicle must be stopped for a long time.

The present invention has been made in view of the above-mentioned circumstances, and enables melting of snow in a wide range of the railroad track, while reducing running cost and promptly responding to an abnormality in the heat source machine. The purpose is to

[0006]

The present invention comprises a main heat source machine,
A pipe that constitutes a circulation path of the heat medium liquid that is circulated and supplied from the main heat source device, and a plurality of heat generating panels that are laid on the blast of the line and that receives heat of the heat medium liquid that flows through the pipes to raise the temperature. The pipe is connected to an auxiliary heat source device that is activated when the main heat source device is in an abnormal state and circulates the heat medium liquid to the pipe.

[0007]

With this structure, the heat medium liquid circulated and supplied from the main heat source machine raises the temperature of a plurality of heat generating panels laid on the blast of the line through the pipes, and the temperature of these heat generating panels increases. , Snow is melted over a wide area of the track. The heat transfer liquid that has exchanged heat with the heat generating panel is returned to the main heat source machine through the pipe and is heated again for use. Therefore, not only can the track be melted over a wide area,
Since the heat transfer fluid after heat exchange can be returned to the main heat source machine and reused, the running cost can be greatly reduced. Further, when the main heat source device does not operate normally due to a failure or the like, the auxiliary heat source device operates and the heat medium liquid can be circulated and supplied to the pipes, which causes a problem that the operation of the vehicle is stopped for a long time. There is no need to worry.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the embodiments shown in the drawings of FIGS. In the figure, 1,
1 ... is an existing sleeper installed on the blast 2, 2 ... at a predetermined interval, and the basic rails 3, 3 are laid on each of these sleepers 1, 1 ,. The basic rail 3 of the point part 4 of the track A,
Between the three, tongue rails 5 and 5 that change the orbit are installed.

Next, the snow melting device B for railroad tracks according to the present invention will be described. As shown in FIG. 1, a snow melting device B for a railroad track includes a plurality of (three in this embodiment) main heat source units 6, 6, 6 such as an oil boiler installed near the side of the track A, and a point section 4. A large number of heat generating panels 7, 7 laid on the blast 2 between the sleepers 1, 1 ...
, And the heat generating devices 7 are arranged in a meandering shape between the sleepers 1, 1, ..., and form the circulation paths A, B, and C of the heat medium liquid circulated and supplied from the heat source device 6 by the circulation pump 6A, and each heat generation panel 7 , 7 ... For heat conduction and temperature rise of the pipes 8, 8 ... And an auxiliary heat source device 9 installed side by side with the main heat source device 6.

The main heat source units 6, 6, 6 each have a circulation pump 6A and a heating value of 25,000 to 50,000K.
A cal / h oil burner 6B and a hot water storage type heat exchanger 6C heated by the burner 6B are housed in an exterior body 6D, and a snowfall sensor (not shown) detects snowfall. The operation is performed by.

As shown in FIG. 4, the heat generating panels 7, 7 ... Include a core material 7A made of a flat metal material having good thermal conductivity and high rigidity, and the core material 7A. 7A is a surface material 7B which covers the entire surface of 7A and is made of an electrically insulating material such as glass fiber reinforced plastic, and the pipe 8 is held at a substantially central portion on the lower surface side of the surface material 7B. The holding portion 10 is integrally formed. Then, as shown in FIG. 3, these heat generating panels 7, 7, ... Blast 2, 2 under the basic rail 3 so that the upper surfaces of both ends are in contact with the lower surfaces of the basic rails 3, 3, respectively.
It is laid on top and has a plurality of fixing brackets 11 and 11 and bolts 1.
2, 12 and nuts (not shown) and the like are used to connect to the basic rail 3.

The pipes 8 and 8 are made by bending and / or connecting metal pipes having good heat conductivity, and the portions located between the sleepers 1, 1 ...
.. are brought into contact with and held by a holding portion 10 on the lower surface of the heat-generating panels 7, 7 ... And fixed to the heat-generating panels 7, 7 ... By appropriate fixing means (not shown). A heat insulating material (not shown) is wound around a part of the pipes 8, 8 near the heat source device 6 to prevent heat loss.

The auxiliary heat source unit 9 uses the same petroleum boiler as the main heat source unit 6, and as shown in FIG. 1, a plurality of branch forward pipes 14 branched from the forward pipe 13 of the auxiliary heat source unit 9. , 14, 14 are provided with on-off valves 15, 15, 15 such as solenoid valves in the middle thereof, and their tip ends are connected to the pipes 8 on the forward side of the circulation paths a, b and c, respectively. On the other hand, the return pipe 1 of the auxiliary heat source unit 9
On-off valves 18, 18, 18 such as solenoid valves are provided in the middle of a plurality of branch return pipes 17, 17, 17 branched from 6, respectively, and their tip ends have a circulation path a,
(B) and (c) are connected to the return side pipes 8, respectively. Then, the auxiliary heat source machine 9 is operated in an abnormal state when any of the main heat source machines 6, 6, 6 fails.

In the above structure, when the snowfall sensor (not shown) detects snowfall, the operation of the main heat source units 6, 6, 6 is started. When the operation of these main heat source units 6 is started, the burner 6B burns and the heat transfer medium in the heat exchanger 6C is about 40 to
It is heated to a high temperature of 60 ° C., and the heat medium liquid heated to the high temperature flows into the pipes 8 and 8 of the circulation paths a, b, and c along with the driving of the circulation pump 6A, and the heat generation panels 7 and 7 ... ... raises the temperature by heat conduction. Each of these heating panels 7, 7
By the temperature rise of ......, snow is melted over a wide range inside and outside the basic rails 3, 3. Then, the heat medium liquid after heat exchange that has conducted heat to each heat generation panel 7, 7 is returned to the main heat source devices 6, 6, 6 through the pipes 8, 8 and is heated again in the heat exchanger 6C. Is used.

Here, when one of the main heat source units 6 fails, the auxiliary heat source unit 9 is activated, and the main heat source unit 6 is connected to one of the circulation paths A, B and C of the main heat source unit 6 which has failed. When the open / close valves 15 and 18 of the branch return pipe 14 and the branch return pipe 17 are opened, the heat transfer medium sent from the auxiliary heat source device 9 flows into the pipe 8 of the circulation path of the main heat source device 6 that has failed, and the main heat source device 6 All of the heat generation panels 7, 7 ...
... can be heated.

According to the above-mentioned embodiment, the snow melting device B for railway track according to the present invention has a large number of heat generating panels on the blast 2 between the sleepers 1, 1 ... Laying 7, 7 ... and each sleeper 1,
1 ... Circulating path of heat transfer medium arranged in a meandering pattern a, b,
The heat medium liquid heated to a high temperature of about 40 to 60 ° C. by the main heat source devices 6, 6, 6 is circulated and supplied to the pipes 8, 8 constituting the c to raise the temperature of each heat generation panel 7, 7. As a result, the heat generating panels 7, 7 ... Can heat the surroundings of the basic rails 3, 3 and the tongue rails 5, 5 placed between the basic rails 3, 3, thus widening the area of the line A. Melting of snow is possible. In addition, each heating panel 7, 7 ...
The heat transfer liquid after heat exchange to the main heat source devices 6, 6, 6 can be reused by returning the heat transfer liquid to the main heat source units 6, 6, 6 through the pipes 8, 8 so that the heat transfer liquid is hardly consumed and the heat dissipation loss is small. Furthermore, heat recovery can be performed, running costs can be kept low, and economical snow melting can be performed.

Further, since auxiliary pipes 8 and 8 are connected to an auxiliary heat source device 9 which is operated when the main heat source device 6 is in an abnormal state and circulates the heat medium liquid to the pipes 8 and 8, the main heat source device 6 is connected. If one does not operate normally due to a failure, the auxiliary heat source unit 9 can be operated to raise the temperature of all the heat generation panels 7, 7 ... It is possible to avoid inconvenience such as stopping.

FIG. 5 shows another embodiment of the heat generating panel. In this embodiment, the heat generating panels 7, 7 are formed in a substantially U-shaped vertical cross-section, and are crossed over the sleepers 1. By laying a plurality of heat generating panels 7, 7 on the blast 2 of the line A at a predetermined interval from each other, and arranging a pipe 8 between the heat generating panels 7, 7 in a heat conductive relationship, , 7 are designed to raise the temperature.

FIG. 6 shows still another embodiment of the heat generating panel, in which the vertical cross-sectional shape of each heat generating panel 7, 7 is formed into a substantially U-shape that widens toward the end, and each sleeper 1 is formed. A plurality of heat generation panels 7, 7 are laid on the blast 2 of the line A so as to straddle the heat conduction plate 2, and the outer circumference has a wedge-shaped heat conduction plate 2 in vertical cross section.
The pipe 8 to which 0 is attached is arranged in a heat conducting relationship between the heat generating panels 7 and 7 via the heat conducting plate 20 so that the temperature of the heat generating panels 7 and 7 is raised.

[0020]

As described above, according to the snow melting device for a railroad track of the present invention, not only can the snow be melted over a wide range, but also the running cost during operation can be significantly reduced, and the snow melting can be economical. In addition, even if an abnormal situation such as a failure occurs in the main heat source machine, by operating the auxiliary heat source machine, it is possible to respond promptly and there is no fear of causing inconvenience such as stopping the operation of the vehicle for a long time. It has excellent usability.

[Brief description of drawings]

FIG. 1 is a schematic plan view of a railway showing a state in which a snow melting device for a railway according to the present invention has been installed.

FIG. 2 is a detailed perspective view of a main part of FIG.

FIG. 3 is a cross-sectional view of a track showing a state in which a snow melting device for a railroad track has been installed.

FIG. 4 is a cross-sectional view of a main part of a heat generating panel portion.

FIG. 5 is a sectional view of an essential part showing another embodiment of the heat generating panel part.

FIG. 6 is a cross-sectional view of an essential part showing still another embodiment of a heat generating panel part.

[Explanation of symbols]

 A track B Snow melting device for railway track 2 Blast 6 Main heat source machine 7 Heating panel 8 Piping 9 Auxiliary heat source machine

Claims (1)

[Claims] 1. A main heat source device, a pipe constituting a circulation path of a heat medium liquid circulated and supplied from the main heat source device, and a line installed on a blast of a line and receiving heat of the heat medium liquid flowing through the pipe. A plurality of heat-generating panels that heat up by
A snow melting device for a railway line, which is connected to an auxiliary heat source device which is activated when the main heat source device is in an abnormal state and circulates a heat medium liquid to the pipe.