JPH0718137B2 - Snow melting equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a snow melting apparatus that melts and removes snow accumulated and removed by a train on an elevated track, for smooth running of the train.

[Prior Art] For example, a conventional snow melting device is disclosed in Japanese Utility Model Laid-Open No. 56-68017, which is used for melting snow accumulated in a snow storage groove provided beside an elevated track of an viaduct. If you do the fifth
Figure 5 and Figure 6, Figure 5 shows a vertical cross-sectional view, Figure 6 shows a horizontal cross-sectional view, respectively. In these figures, (1) is a pier whose foundation is buried in soil (2), (3) is a viaduct provided at the upper part of the pier (1) and has an viaduct side wall (3a) and an viaduct floor (3b). (4) is an elevated track of the train laid on the viaduct floor (3b), and is composed of sleepers (5) and rails (6). (7) is a snow storage groove provided parallel to the elevated track (4), (8)
Is the snow that was removed by the train and accumulated in the snow storage trench (7),
In (9), one side (9a) is buried in the soil (2), the other side (9b) is buried under the bottom of the snow storage trench (7) of the viaduct (3), and the operation of water, ammonia, etc. inside. It is a heat pipe in which a fluid is enclosed.

Next, the operation will be described. If there is snowfall in the winter, it is necessary to remove the snow accumulated on the train track outside the track so that the train travels smoothly. When the track is located on the viaduct (3), it is difficult to remove snow to the outside of the viaduct (3) because of the viaduct side wall (3a).
Snow storage groove (7) parallel to the elevated track (4) on the viaduct floor (3b)
Is provided, the removed snow (8) is accumulated and stored in the snow storage groove (7), and the snow (8) is heat pipe (9).
Is melted by the heat transport effect of. That is, when the temperature on the local side (9b) of the heat pipe (9) becomes lower than the temperature on the one side (9a) of the heat pipe (9), heat transport is performed. For example, the temperature in the snow storage groove (7) is
It becomes about ℃. On the other hand, the temperature in soil (2) is 10
The average temperature is about 13 to 15 ℃ even in winter at about m. The one side (9a) of the heat pipe (9) is heated by the heat in the soil (2), the working fluid in the heat pipe (9) is vaporized, and the amount of heat in the soil (2) is taken as evaporation latent heat. It moves through the inside of (9) to the other side (9b) of the heat pipe (9). The other side (9b) of the heat pipe (9)
Since the temperature of the working fluid vapor that has moved to the side is lower on the side of the snow storage groove (7) than on the side of the soil (2), it is condensed and liquefied to form the snow storage groove (7).
Release latent heat of condensation to the side. The liquefied working fluid travels along the inner wall surface of the heat pipe (9) and is returned to one side (9a) of the heat pipe (9). By repeating the above operation naturally, the amount of heat of the soil (2) is transferred to the snow storage groove (7) side, and the inside of the snow storage groove (7) can be heated to 0 ° C. or higher. The snow (8) deposited in the groove (7) is melted.

[Problems to be Solved by the Invention] However, since the soil (2) is used as a heat source in the above-described conventional apparatus, sufficient snow melting is performed when the temperature of the heat source is low and the amount of snow accumulated in the snow storage groove (7) is large. It cannot exert its effect. Further, if the period during which the melting process is continued continues, the heat possessed by the soil (2) is consumed for the melting process, so the temperature of the soil (2) gradually decreases, and the snow melting effect gradually decreases. Also, one side (9a) of the heat pipe (9) was buried in the soil (2) to a depth of about 10 m, which made the burying work very troublesome.
Also, since the other side (9b) of the heat pipe (9) is buried in the concrete under the bottom of the snow storage groove (7), the burying work becomes very troublesome and the snow storage groove (7)
The melting process of the snow inside is the other side (9b) of the heat pipe (9).
Since it was through concrete, the heat transfer efficiency was poor and the snow melting performance was low. As a result, the load responsiveness is poor, and there is also the problem that snow melting performance cannot be promptly exhibited when necessary.

The present invention has been made to solve the above problems, and an object thereof is to obtain a snow melting device having high snow melting performance.

[Means for Solving the Problems] In the snow melting device according to the present invention, a heat radiation panel is arranged beside the track, one side of the heat pipe is brought into thermal contact with the hot water circulation portion, and the other side of the heat pipe is placed on the heat radiation panel. A water supply pump for supplying hot water to the hot water distribution part is provided on one side of the water supply pipe, and the water introduced by the water supply pump is heated downstream of this water supply pump and discharged as hot water to the hot water distribution part side. It is equipped with a boiler.

In another invention, a heat dissipation panel is installed beside the track,
One side of the heat pipe is brought into thermal contact with the hot water flow section, the other side of the heat pipe is provided in thermal contact with one side of the heat dissipation panel, and a water feed pump for feeding hot water is provided in the hot water flow section. A boiler that heats the water introduced by the water pump and discharges it as hot water to the hot water circulation part is installed on the downstream side, and a sensor that measures the temperature or the amount of snowfall is installed, and the combustion control of the boiler is controlled according to the output of this sensor. It is provided with a control means for performing.

In another invention, a heat dissipation panel is installed beside the track,
One side of the heat pipe is brought into thermal contact with the hot water flow section, the other side of the heat pipe is provided in thermal contact with one side of the heat dissipation panel, and a water feed pump for feeding hot water is provided in the hot water flow section. A boiler is installed on the downstream side to heat the water introduced by the water pump and draw it out as hot water to the hot water circulation side, and the water discharged from the water pump is installed in the pipe between the water pump and the boiler. Bypass means for bypassing is provided on the side, a sensor for measuring the temperature or the amount of snowfall is provided, and a control means for performing bypass control of the bypass means according to the output of this sensor is provided.

[Operation] In the snow melting device according to the present invention, the water introduced into the boiler by the water pump is heated by the boiler to become hot water, which is then sent to the hot water distribution unit. Heat is transported from one side to the other side of the heat pipe, and heat is efficiently transferred from the other side of the heat pipe to the heat dissipation panel, and the snow accumulated on the heat dissipation panel is rapidly melted.

In another, the combustion control of the boiler is performed by the control means according to the output of the sensor that measures the temperature or the amount of snowfall.
The snow accumulated on the heat radiation panel is effectively and promptly melted according to the temperature or the amount of snowfall.

On the other hand, according to the output of the sensor for measuring the temperature or the amount of snowfall, the control means performs the bypass control of the bypass means, so that the snow accumulated on the heat radiation panel can be effectively and quickly adjusted according to the temperature or the snowfall amount. Melt.

[Embodiment] An embodiment of the present invention will be described below with reference to FIG. In Fig. 1, (1) is a pier, (3) is an viaduct,
(3a) is a viaduct side wall, (3b) is a viaduct floor, (4) is an elevated track, (5) is a sleeper, (6) is a rail, (7) is a snow storage trench, (8) is snow, and (10) is Water pipe for supplying hot water, (1
1) is a return pipe, (12) is a hot water distribution part in which hot water from the water supply pipe (10) is arranged inside the snow storage groove (7), and (13) is a water supply pipe (10) and hot water distribution part (12). ) Is connected to the inlet side of (1), (14) is the return pipe (11) and the hot water flow section (1
The second connecting pipe (15), which connects the outlet side of 2), is a heat pipe which is arranged in the snow storage groove (7) and in which a working fluid such as water or ammonia is enclosed. (15a)
Is in thermal contact with and connected to the hot water flow section (12).
Reference numeral (16) is a heat radiation panel mounted in thermal contact with the other side (15b) of the heat pipe (15), and snow is deposited on the heat radiation panel (16). (17) is the hot water distribution section (12)
A water supply pump (18) for supplying hot water to the water is installed on the downstream side of the water supply pump (17), and the water introduced by the water supply pump (17), that is, the outflow water from the hot water distribution unit (12) is supplied. The boiler is heated and discharged as hot water to the hot water flow section (12) side, and (18a) is the combustion section.

Next, the operation will be described. When there is snowfall in the winter, snow accumulates on the elevated track (4) of the train and on the heat dissipation panel (16) arranged in the snow storage groove (7). Snow on the elevated track (4) is removed by a rotary car or a leading train (not shown) running on the rail (6), and is accumulated on the heat dissipation panel (16) in the snow storage groove (7). On the other hand, the outflow water from the hot water flow section (12) is discharged by the water feed pump (17) and introduced into the boiler (18), where it is heated in the boiler (18) to become high-temperature hot water and is led out to the water pipe (10). ) From the first
Through the connection pipe (13) in the hot water flow section (12) disposed below the heat dissipation panel (16). One side (15a) of the heat pipe (15) is in thermal contact with the hot water flow section (12), and the one side (15a) of the heat pipe (15) is heated by the hot water in the hot water flow section (12). Then, the working fluid in the heat pipe (15) is vaporized and deprives the heat quantity of the warm water as latent heat of vaporization, and moves through the heat pipe (15) to the other side (15b) of the heat pipe (15). Heat pipe (1
The vapor of the working fluid that has moved to the other side (15b) of 5) is condensed and liquefied in the snow storage groove (7) because the heat radiation panel (16) arranged in the snow storage groove (7) has a lower temperature than hot water. The latent heat of condensation is radiated to the heat dissipation panel (16) arranged at. The latent heat of condensation heats the heat dissipation panel (16) to raise its temperature. The liquefied working fluid travels along the inner wall surface of the heat pipe (15) and is returned to one side (15a) of the heat pipe (15). By the above operation being naturally repeated, the heat quantity of the hot water flowing from the water supply pipe (10) to the hot water flowing portion (12) is radiated by the heat pipe (15) to the heat dissipation panel (16).
The heat dissipation panel (16) is heated to 0 ° C. or higher, and the snow (8) accumulated on the heat dissipation panel (16) in the snow storage groove (7) is melted. The heat pipe (15)
The hot water that has lost heat due to heat is reduced to a low temperature by the hot water distribution unit (12).
Through the second connecting pipe (14) to the return pipe (11) for recirculation, and is again introduced into the boiler (18) by the water pump (17) and heated in the boiler (18) to generate hot water. And is led out and is distributed from the water supply pipe (10) to the hot water distribution unit (12).

In the above embodiment, the case of one snow storage groove (7) on the viaduct (3) was described, but when there are two elevated tracks (4) on the viaduct (3) as shown in FIG. Three snow storage grooves (7) are provided, and each of the snow storage grooves (7) has a heat radiation panel (16), a heat pipe (15), and a hot water distribution section (12).
A water supply pipe (10) and a return pipe (11) may be connected to each hot water flow section (12). In this case, it is advisable to install an expansion tank (19) on the viaduct floor (3b) to absorb the thermal expansion of hot water due to the temperature rise of the piping system.

Further, as in another invention shown in FIG. 3, a temperature sensor (20) for measuring the hot water temperature is provided in the water supply pipe (10) on the downstream side of the boiler (18), and as a sensor for measuring weather conditions, for example, the temperature A sensor (21) that measures snow and a sensor (22) that measures the amount of snowfall are provided, and these sensors (20), (21), (22)
The control means (23) for controlling the combustion of the combustion part (18a) of the boiler (18) may be provided to melt the snow (8) deposited on the heat radiation panel (16). . That is, for example, if the output value of the sensor (20) becomes equal to or greater than a predetermined value, the control means (23) controls the combustion stop of the combustion section (18a) of the boiler (18), and the output value of the sensor (20) becomes the predetermined value. Up to the combustion section (18) of the boiler (18) up to the control means (23)
When the combustion control in (a) is performed and the output value of the sensor (21) exceeds a predetermined value, the control means (23) controls combustion stop of the combustion section (18a) of the boiler (18), and the output of the sensor (21). The control means (23) controls combustion of the combustion part (18a) of the boiler (18) until the value reaches a predetermined value, and when the output value of the sensor (22) becomes less than or equal to the predetermined value, the control means (23) controls the boiler ( 18)
Combustion stop control of the combustion section (18a) of the
Control unit (23) controls the combustion of the combustion section (18a) of the boiler (18) to effectively melt the snow (8) accumulated on the heat dissipation panel (16) when the output value of the You may make it process.

Further, as another invention shown in FIG. 4, a temperature sensor (20) for measuring the hot water temperature of the water supply pipe (10) on the downstream side of the boiler (18) is provided, and as a sensor for measuring weather conditions, for example, the temperature A sensor (21) for measuring the snowfall and a sensor (22) for measuring the amount of snowfall are provided, and the water discharged by the water pump (17) into the water pipe (10) between the water pump (17) and the boiler (18). By-passing means (24) such as a three-way valve for bypassing the downstream side of the boiler (18) is provided, and these sensors (20),
A control means (25) for performing bypass control of the bypass means (24) according to the outputs of (21) and (22) is provided to melt the snow (8) accumulated on the heat dissipation panel (16). Good. That is, for example, if the output value of the sensor (20) becomes a predetermined value or more, the control means (25) performs bypass control of the bypass means (24) to adjust the hot water temperature, and the output value of the sensor (20) reaches the predetermined value. Performs the bypass stop control of the bypass means (24) by the control means (25), and if the output value of the sensor (21) becomes a predetermined value or more, the control means (25) performs the bypass control of the bypass means (24). Adjust the temperature,
Until the output value of the sensor (21) reaches a predetermined value, the control means (25) controls the bypass means (24) to stop bypassing, and if the output value of the sensor (22) becomes equal to or less than the predetermined value, the control means (2
5) Bypass control of the bypass means (24) is performed to adjust the hot water temperature, and when the output value of the sensor (22) is above a predetermined value, the bypass stop control of the bypass means (24) is performed by the control means (25). The snow (8) deposited on the heat dissipation panel (16) may be effectively melted. When the temperature of the hot water is simply adjusted, the bypass means (24) is controlled by the control means (25) according to the output of the sensor (20).
By-pass control may be performed.

Also, as shown in FIGS. 3 to 5, the heat dissipation panel (1
6), heat pipes (15), hot water distribution unit (12) units are arranged in the extension direction of the snow storage groove (7), and the water supply pipe (10) and return pipe are placed in each snow storage groove (7). (11)
And the first connecting pipe (1
3), connected by the second connecting pipe (14), and the water supply pipe (10) is branched into three to supply hot water, and the return pipe (11) collects three into one for reflux. It may be configured. In short, if a plurality of units are arranged in the extending direction of the snow storage groove (7), the snow melting distance of the elevated track (4) can be extended accordingly.

In addition, in the above-mentioned embodiment, as a sensor for measuring weather conditions,
Although the case of providing a plurality of snows has been described, it is needless to say that the snow melting may be performed by each combination or any sensor.

Further, in the above-mentioned embodiment, the case where the outflow water from the hot water circulation unit (12) is introduced into the boiler (18) by the water feed pump (17) has been described, but a tank (not shown) is provided upstream of the water feed pump (17). ) May be provided to store the outflow water from the hot water circulation part (12) and to introduce the water in the tank to the boiler (18) by the water supply pump (17). In this case, a stable supply of hot water is possible. As a result, it becomes possible to sufficiently cope with a sudden load request.

As described above, by using geothermal heat instead of hot water as the heat source, a stable heat quantity can be secured and the heat quantity of hot water can be adjusted according to the load. In addition, since the heat pipe is not buried in soil or concrete but placed in the snow storage ditch, the heat pipe installation work is simplified and the heat radiation panel is used directly instead of the indirect melting treatment through concrete. This is a typical melting process, and the snow melting performance is extremely high. As a result, the load response is improved and the snow melting performance can be promptly and sufficiently exhibited when necessary.

By the way, in the above explanation, the case of snow melting on the elevated track of the viaduct was described, but in the case of snow melting on the flat track instead of the viaduct, a heat pipe, a heat radiation panel, a hot water circulation unit are arranged beside the flat track, and a water pipe, It suffices to connect the return water pipe to the hot water circulation portion by the first connecting pipe and the second connecting pipe to configure the snow melting device, and the same effect as that of the above-described embodiment is obtained.

[Effects of the Invention] As described above, the present invention allows the water introduced into the boiler by the water pump to be heated by the boiler to become hot water, which is then sent to the hot water distribution unit, and the amount of heat of the hot water flowing through the hot water distribution unit is reduced. Since heat is transferred from one side of the heat pipe to the other side and heat is efficiently transferred from the other side of the heat pipe to the heat dissipation panel, the snow accumulated on the heat dissipation panel can be directly melted. It is possible to obtain a snow melting device with high snow melting performance and quick response.

In another, the combustion control of the boiler is performed by the control means according to the output of the sensor that measures the temperature or the amount of snowfall.
It is possible to obtain a snow melting device capable of effectively and promptly melting the snow accumulated on the heat dissipation panel according to the temperature or the amount of snowfall.

On the other hand, according to the output of the sensor for measuring the temperature or the amount of snowfall, the control means performs the bypass control of the bypass means, so that the snow accumulated on the heat radiation panel can be effectively and quickly adjusted according to the temperature or the snowfall amount. It is possible to obtain a snow melting device that can be subjected to melting treatment.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross sectional view showing a snow melting device according to an embodiment of the present invention, FIG. 2 is a cross sectional view showing a snow melting device according to another embodiment of the present invention, and FIG. FIG. 4 is a system diagram showing a snow melting device according to another embodiment of the invention, FIG. 4 is a system diagram showing a snow melting device according to another embodiment of the invention, and FIGS. 5 and 6 are vertical sectional views showing a conventional snow melting device. FIG. In the figure, (4) is a track, (8) is snow, (12) is a hot water flow section, (15) is a heat pipe, (16) is a heat dissipation panel,
(17) is a water pump, (18) is a boiler, (21), (22)
Is a sensor, (23) and (25) are control means, and (24) is a bypass means. The same reference numerals in the drawings indicate the same or corresponding parts.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Toshige Fujii 2-8, Hikarimachi, Kokubunji, Tokyo 38 Inside the Railway Technical Research Institute (72) Inventor Mochio Morimoto 4-9 Shinkino, Abiko-shi, Chiba No. 20 (72) Inventor Iwa ▲ Maki Mitsumi 1-2-2 Futamata, Ichikawa-shi, Chiba (72) Inventor Hitoshi Inoue 1-2 1-2 Wadazaki-cho, Hyogo-ku, Kobe-shi, Hyogo Mitsubishi Electric Corporation Inside the Kobe Works (72) Inventor Hisaaki Yamain 1-2 No. 1-2 Wadazaki-cho, Hyogo-ku, Kobe-shi, Hyogo Mitsubishi Electric Corporation Kobe Works (56) Reference JP-A-55-122901 (JP, A) Showa 49-42125 (JP, A) JP-A-3-241103 (JP, A)

Claims (3)

[Claims] 1. A heat-dissipation panel disposed on the side of the track, on which snow accumulates, a hot water flow section disposed on the side of the track, through which hot water flows, and a hot water flow section disposed on the side of the track, one side of which is the hot water flow section. A heat pipe connected in thermal contact with the other side, the other side being in thermal contact with one surface of the heat dissipation panel, a water pump for supplying the hot water to the hot water circulating portion, and a water pump downstream side. A snow melting device, comprising: a boiler that is provided and heats water introduced by the water pump to draw it as hot water to the hot water circulation unit side. 2. A heat dissipation panel disposed on the side of the track, on which snow accumulates, a hot water distribution section disposed on the side of the track for circulating hot water, and a warm water distribution section disposed on the side of the track, one side of which is the hot water distribution section. A heat pipe connected in thermal contact with the other side, the other side being in thermal contact with one surface of the heat dissipation panel, a water pump for supplying the hot water to the hot water circulating portion, and a water pump downstream side. A boiler that is disposed and heats the water introduced by the water pump to draw out as hot water to the hot water circulation unit side, a sensor that measures the temperature or snowfall, and combustion of the boiler according to the output of the sensor A snow melting apparatus, comprising: a control unit that performs control. 3. A heat dissipation panel disposed on the side of the track, on which snow accumulates, a hot water distribution part disposed on the side of the track, through which warm water flows, and a hot water distribution part disposed on the side of the track, one side of which is the hot water distribution part. A heat pipe connected in thermal contact with the other side, the other side being in thermal contact with one surface of the heat dissipation panel, a water pump for supplying the hot water to the hot water circulating portion, and a water pump downstream side. A boiler that is provided and heats the water introduced by the water pump to draw it out as hot water to the hot water flow section side, and is provided in the water pipe between the water pump and the boiler, and the water pump Bypass means for bypassing the water discharged by the downstream of the boiler,
A snow melting device comprising: a sensor for measuring an air temperature or an amount of snowfall; and a control means for performing bypass control of the bypass means according to an output of the sensor.