JP6865577B2 - Rail cooling system - Google Patents

Description

The present invention relates to a rail cooling system for suppressing thermal expansion of rail rails.

The turnout rail, which is one of the rails of the railway, is required to operate reliably even when the environmental temperature changes. As an example, there is a conventional technique for sprinkling water on a turnout rail laid in a cold region when the temperature drops below zero degrees Celsius to prevent freezing (see, for example, Patent Document 1).

More specifically, in Patent Document 1, when the temperature drops below zero degrees Celsius, the water accumulated in the water tank is sprinkled from the sprinkler hole toward the turnout by using the pressurization by the pump. There is. As a result, it is possible to abolish the method of preventing the turnout from freezing by sprinkling water, which conventionally relied on the main line snow-melting sprinkler. Furthermore, satisfactory reliability can be ensured under the minimum optimum amount of watering.

In addition, as a technology for sprinkling water on the rail, in order to prevent the generation of rail squeaking noise, there is also a conventional technology that obtains the maximum sound reduction effect after sprinkling water on the upper part of the rail in as little amount as possible to reduce the effect on the trackbed. (See, for example, Patent Document 2).

Jitsukaisho 61-184703 Japanese Unexamined Patent Publication No. 7-17402

However, the prior art has the following problems.
When watering as in Patent Documents 1 and 2, the bottom of the ballast (paving stone) under the rail is wetted. The ballast is scraped and granulated by the vibration caused by the running of the train, and is deposited under the ballast (so-called roadbed). If the ballast is wetted by sprinkling water, the finely divided stones may stick to the ballast, which may hinder maintenance and maintenance.

Further, as in Patent Document 1, the turnout is required to operate reliably not only when the temperature drops below zero degrees Celsius but also in the summer when the temperature rises. Specifically, the turnout rail thermally expands due to the direct sunlight, causing elongation and distortion. In the worst case, such extension or distortion of the turnout rail causes derailment of the vehicle.

However, as a cooling method in the summer, as in Patent Document 1 described above, watering by hand or automatic equipment is common, and in this case as well, the above-mentioned problems can be mentioned.

Therefore, in order to avoid such a problem, it is necessary to reduce the amount of water sprinkled under the ballast, and when the amount of sprinkled water is restricted for that purpose, a sufficient cooling effect is obtained. There was a risk that it could not be done.

Further, the rail to which the cooling technology is applied is not limited to the turnout rail, and a technology for efficiently cooling the rail of the railway is desired.

The present invention has been made to solve the above problems, and an object of the present invention is to obtain a rail cooling system capable of cooling a rail without extremely wetting the ballast.

The rail cooling system according to the present invention is a rail cooling system that cools rails for traveling of a rail vehicle, and among the rails, a branch rail provided between a pair of main rails is targeted for cooling, and the branch rail. A plurality of spray nozzles for spraying mist toward the rail are provided, and each of the plurality of spray nozzles is arranged at a position where mist can be sprayed on the inner side surface of the branch rail provided between the pair of main rails. , Placed at a position where the distance from the tip of the spray nozzle to the inner side surface of the brancher rail is in the range of 25 cm to 150 cm, and placed at one end or both ends of the spray section by a plurality of spray nozzles in the direction orthogonal to the brancher rail. The mist sprayed from each of the plurality of spray nozzles is further provided with a windbreak plate that suppresses the influence of the wind.

According to the present invention, a spray nozzle installed near the rail sprays mist toward the rail. As a result, it is possible to obtain a rail cooling system capable of cooling the rail without extremely wetting the ballast.

It is explanatory drawing of the turnout rail which is the object of cooling in Embodiment 1 of this invention. It is explanatory drawing which shows the state which provided the rail cooling system which concerns on Embodiment 1 of this invention inside the turnout rail, and is the figure which looked at the turnout rail 10 from above. It is explanatory drawing which showed the structure seen from the AA cross section of FIG. 2 about the rail cooling system which concerns on Embodiment 1 of this invention. It is a figure which showed the layout of the plurality of spray nozzles 32 which concerns on Embodiment 1 of this invention. It is an overall view of the rail cooling system which concerns on Embodiment 1 of this invention. It is a figure which showed an example of the spray control executed by the spray control unit 1 of the rail cooling system which concerns on Embodiment 1 of this invention. It is explanatory drawing which shows the state which provided the rail cooling system which concerns on Embodiment 2 of this invention on both sides of a turnout rail, and is the figure which looked at the turnout rail 10 from above. It is explanatory drawing which showed the structure seen from the AA cross section of FIG. 7 about the rail cooling system which concerns on Embodiment 2 of this invention. It is a figure which showed the layout of the plurality of spray nozzles 32 which concerns on Embodiment 2 of this invention. It is an overall view of the rail cooling system which concerns on Embodiment 2 of this invention.

Hereinafter, preferred embodiments of the rail cooling system of the present invention will be described with reference to the drawings. In the following description, the turnout rail will be described as an example of the rail to be cooled, but the present invention can be applied to all the rails for traveling of a railway vehicle.

Embodiment 1.
FIG. 1 is an explanatory view of a turnout rail to be cooled according to the first embodiment of the present invention. The turnout rail 10 is provided between the main line rail 11 and the main line rail 12, and the vehicle entering from the first main line 21 on the left side of FIG. 1 is transferred to the second main line 22 or the second main line 22 or the second after branching. It serves as a switch for entering any of the main lines 23 of 3.

FIG. 1A shows a case where the turnout rail 10 is switched to the first state to guide the vehicle from the first main line 21 to the second main line 22. On the other hand, FIG. 1B shows a case where the turnout rail 10 is switched to the second state to guide the vehicle from the first main line 21 to the third main line 23.

When the turnout rail 10 is thermally expanded by direct sunlight, elongation and distortion occur, which causes train failure. When the turnout rail is cooled by sprinkling water, as described above, there is a problem that finely divided stones are stuck. Therefore, in order to solve such a problem, the technical feature of the first embodiment is to provide a configuration in which the side surface of the turnout rail 10 is cooled by spraying mist. , The following will be described in detail with reference to the drawings.

FIG. 2 is an explanatory view showing a state in which the rail cooling system according to the first embodiment of the present invention is provided inside the turnout rail, and is a view of the turnout rail 10 viewed from above. In FIG. 2, of the two turnout rails, the one described above (left side in the train traveling direction) is described above the turnout rail 10 (1), and the one described below (right side in the train traveling direction) is described. It is identified as the turnout rail 10 (2). Similarly, with respect to the main rail, the one described above is identified as the main rail 11, and the one described below is identified as the main rail 12.

Then, as shown in FIG. 2, two water distribution pipes 31 (1) and 31 (2) are arranged between the turnout rail 10 (1) and the turnout rail 10 (2). Further, each of these two water distribution pipes 31 (1) and 31 (2) has an appropriate interval (for example, 50 to 100 cm) and is a turnout rail 10 (1) or a turnout rail 10 (2). ) Within a predetermined range (the distance within which the mist sprayed from the spray nozzle 32 reaches the turnout rail 10 (2), for example, 25 to 150 cm). A plurality of spray nozzles 32 are arranged substantially perpendicular to (1) and 10 (2).

The water distribution pipes 31 (1) and 31 (2) are non-conductors. For example, the outer cover is made of polyurethane and the inner pipe is made of nylon 12. By making the water pipes 31 (1) and 31 (2) non-conductors, even if the water pipes 31 (1) and 31 (2) are provided near the rails such as the turnout rail 10, the train operation will be hindered. Do not come.

Depending on the height at which the spray nozzle 32 is installed, the rail may be installed diagonally upward with an elevation angle so as not to wet the ballast as much as possible while wetting the rail. Even in that case, the spray nozzle 32 is provided so as to be perpendicular to the turnout rails 10 (1) and (2) when the turnout rail 10 is viewed from above.

FIG. 3 is an explanatory view showing a configuration of the rail cooling system according to the first embodiment of the present invention as viewed from the AA cross section of FIG. The water distribution pipes 31 (1) and 31 (2) arranged between the main line rail 11 and the main line rail 12 are arranged outside the main line rail 12 via the water distribution pipe 31 passing under the main line rail 12. It is connected to the pump unit 33.

By driving the pump unit 33, water from the water supply that has passed through the reverse osmosis membrane 34 is supplied to the two water distribution pipes 31 (1) and 31 (2) via the water distribution pipe 31. To. The water supplied to the two water distribution pipes 31 (1) and 31 (2) has a particle size from a plurality of spray nozzles 32 arranged in the immediate vicinity of the turnout rails 10 (1) and 10 (2). Is sprayed as a small mist that easily vaporizes. The reverse osmosis membrane 34 is not an essential configuration.

As shown in FIG. 3, the rail cooling system according to the first embodiment sprays mist toward the inner side surface of the turnout rail 10 to directly press the side surfaces of the two turnout rails 10. Cooling. The side surface of the turnout rail 10 has a larger surface area than the upper part, and by directly cooling the side surface, the turnout rail can be efficiently cooled.

FIG. 4 is a diagram showing a layout of a plurality of spray nozzles 32 according to the first embodiment of the present invention. The plurality of spray nozzles 32 are connected to the water distribution pipe 31 at appropriate intervals according to the installation environment. Further, the plurality of spray nozzles 32 select the particle size of the mist to be sprayed so as to have an appropriate value according to the installation environment.

Unlike the conventional watering method, the rail cooling system in the first embodiment uses a plurality of spray nozzles 32 to make the water supplied from the water distribution pipe 31 into a fine mist state on the side surface of the turnout rail 10. The mist method of spraying is adopted.

According to this mist method, the mist having a large particle size is directly applied to the side surface of the turnout rail 10 without being vaporized in the air, and vaporization is promoted on the surface of the overheated turnout rail 10 to be efficient. Removes heat from the turnout rail 10. On the other hand, the mist having a small particle size contributes to cooling the ambient air by vaporizing in the air before the turnout rail 10 or on the surface of the ballast that is overheated.

Therefore, when both the large particle size and the small particle size work efficiently, it is possible to cool the turnout rail 10 and reduce ballast wetting with a small amount of water. As a result of the verification experiment, it was confirmed that the cooling efficiency was good when the average particle size of the sprayed mist was 50 μm or less. It should be noted that preferably, by setting the average particle size of the sprayed mist to 16 μm or less, a sufficient cooling effect can be realized while further reducing ballast wetting.

Next, the control operation of the rail cooling system according to the first embodiment will be specifically described. FIG. 5 is an overall view of the rail cooling system according to the first embodiment of the present invention.

The rail cooling system according to the first embodiment includes a spray control unit 1, a turnout rail temperature sensor 2, a rainfall sensor 3, a water distribution pipe 31, 31 (1), 31 (2), a spray nozzle 32, a pump unit 33, and a reverse osmosis. It is configured to include a permeable membrane 34 and a valve 35. The spray control unit 1, the turnout rail temperature sensor 2, the rainfall sensor 3, and the valve 35 are components that are not shown in FIG. 3 above.

The reverse osmosis membrane 34 is a membrane that allows water to pass through and does not allow impurities other than water to pass through. In the present invention, the reverse osmosis membrane 34 is not an essential configuration.

The turnout rail temperature sensor 2 is installed on the turnout rails 10 (1) and 10 (2), and measures the temperature of the turnout rails 10 (1) and 10 (2). Further, the rainfall sensor 3 detects the rainfall state of whether or not it is raining in the environment in which the turnout rails 10 (1) and 10 (2) are installed. The rainfall sensor 3 may be installed outdoors in the rain and in a place not affected by the spray from the nozzle. For example, the rainfall sensor 3 is provided on a box body for accommodating the pump unit 33.

Then, the spray control unit 1 controls the spray / stop of the mist by controlling the pump unit 33 and the valve 35 based on the detection results of the turnout rail temperature sensor 2 and the rainfall sensor 3.

FIG. 6 is a diagram showing an example of spray control executed by the spray control unit 1 of the rail cooling system according to the first embodiment of the present invention. When the spray control unit 1 determines from the detection result of the rainfall sensor 3 that it is raining, the spray control unit 1 stops the operation of the spray system because it is cooled by the rain.

On the other hand, when it is determined from the detection result of the rainfall sensor 3 that it is not raining, the spray control unit 1 switches and controls the operation / stop of the spray system according to the temperature measurement result of the turnout rail 10. .. In the specific example shown in FIG. 6, the spray control unit 1 pumps when it is not raining and the measurement result by the turnout rail temperature sensor 2 is a predetermined temperature, for example, 30 ° C. or higher. By driving the unit 33 and switching the valve 35 to the open state, the spray system is put into the operating state and mist is sprayed.

Further, the spray control unit 1 determines that cooling by mist is unnecessary when the measurement result by the turnout rail temperature sensor 2 is less than a predetermined temperature, for example, 30 ° C., although it is not raining, and the pump is pumped. By stopping the driving of the unit 33 and switching the valve 35 to the closed state, the spraying system is stopped and the mist spraying is stopped.

The temperature sensor may measure the air temperature instead of the turnout rail temperature sensor 2, and when the temperature exceeds a predetermined temperature, the spray system may be put into an operating state to spray mist. ..

Further, the temperature sensor may be provided on a rail other than the turnout rail 10. In that case, since the rail does not move, it becomes easy to construct wiring and the like when the temperature sensor is provided.

Since mist having an average particle size of 50 μm or less, particularly 16 μm or less, is easily vaporized, continuous operation may be performed during the daytime when it is not raining (particularly during the daytime in summer). In that case, the spray control unit 1 determines the operation of the spray system only from the detection result of the rainfall sensor 3 without using the measurement result by the turnout rail temperature sensor 2.

Further, even when the spraying condition is satisfied, the spray control unit 1 in the first embodiment may intermittently perform spraying from the spray nozzle 32 instead of executing spraying by continuous operation. .. As a result, it is possible to further prevent the ballast from getting wet.

Specifically, it is conceivable to repeat spraying for 5 minutes and stopping for 2 minutes as an example according to preset intermittent operation data. It is also possible to set intermittent operation data in advance so that the spray time and the stop time can be switched to appropriate values according to the temperature of the turnout rail 10 measured by the turnout rail temperature sensor 2. ..

Further, depending on the installation environment of the turnout rail 10, the sprayed mist may be washed downwind when there is wind, and the turnout rail 10 cannot be efficiently wetted, so that a sufficient cooling effect cannot be obtained. Conceivable.

However, as shown in FIGS. 2 and 3, the plurality of spray nozzles 32 in the first embodiment are between the turnout rail 10 (1) and the turnout rail 10 (2) and are the turnout rails. The layout is such that it is installed at a position lower than the height of 10 (1) and 10 (2). Therefore, for the wind in the direction orthogonal to the turnout rails 10 (1) and 10 (2), by adopting such a layout, the turnout rails 10 (1) and 10 (2) themselves are blown. Can be avoided.

Further, for the wind in the direction parallel to the turnout rails 10 (1) and 10 (2), it is conceivable to install a windbreak plate between the spray nozzles or at one end or both ends of the spray section. Here, the windshield is a flat plate that is provided substantially perpendicular to the turnout rails 10 (1) and (2) and the ground, and by installing this windshield at the above-mentioned location. , The influence of wind can be reduced.

In addition to providing a windbreak plate, it is designed to extend both ends of the spray section so that even if mist is swept downwind during wind, it will be applied to the turnout rails 10 (1) and 10 (2). It is also conceivable to add a spray nozzle 32 and adopt a configuration capable of spraying on a wider area.

As described above, according to the first embodiment, the spray nozzle installed between the turnout rails has a configuration for spraying mist toward the side surface of the rail. As a result, it is possible to realize a rail cooling system capable of cooling the rail without extremely wetting the ballast, that is, without wetting the wreckage deposited under the ballast.

Further, the control configuration can be configured so that the mist spraying / stopping can be switched according to the detection result of the temperature sensor or the rainfall sensor. Further, it is provided with a configuration in which intermittent operation can be executed when it is determined that spraying is necessary according to the detection result. As a result, it is possible to prevent the vaporization action on the surface of the turnout rail from becoming saturated, and to perform efficient cooling.

Further, as a measure against the mist being washed away by the wind, a configuration such as providing a windbreak plate or extending the installation section of the spray nozzle can be added. As a result, a sufficient cooling effect can be realized even when there is wind.

Embodiment 2.
In the first embodiment, the spraying direction by the spray nozzle 32 is substantially perpendicular to the side surface of the rail to be cooled, and the spray nozzle 32 is connected to the turnout rail 10 (1) and the turnout rail 10. The case where it was installed between (2) and (2) was explained. On the other hand, in the second embodiment, the spray nozzles 32 are installed on both sides of the rail to be cooled, and the spray direction is tilted so as to be deviated from the vertical direction. Therefore, the further effect obtained by such installation of the spray nozzle 32 will be described below.

FIG. 7 is an explanatory view showing a state in which the rail cooling system according to the second embodiment of the present invention is provided on both sides of the turnout rail, and is a view of the turnout rail 10 viewed from above. In FIG. 7, of the two turnout rails, the one described above (left side in the train traveling direction) is described above the turnout rail 10 (1), and the one described below (right side in the train traveling direction) is described. It is identified as the turnout rail 10 (2). Similarly, with respect to the main rail, the one described above is identified as the main rail 11, and the one described below is identified as the main rail 12.

Then, as shown in FIG. 7, two water pipes 31 (1) and 31 (3) are arranged on both sides of the turnout rail 10 (1), and on both sides of the turnout rail 10 (2). , Two water pipes 31 (2) and 31 (4) are arranged. Further, each of these four water distribution pipes 31 (1) to 31 (4) should be at an appropriate interval and have a distance within a range in which the mist sprayed from the spray nozzle 32 reaches the turnout rail 10. A plurality of spray nozzles 32 are arranged in the air.

FIG. 8 is an explanatory view showing a configuration of the rail cooling system according to the second embodiment of the present invention as viewed from the AA cross section of FIG. Water pipes 31 (1) and 31 (3) arranged on both sides of the turnout rail 10 (1), and water pipes 31 (2) and 31 (4) arranged on both sides of the turnout rail 10 (2). Each of the above is connected to a pump unit 33 arranged outside the main rail 12 via a water pipe 31 passing under the main rail 12.

By driving the pump unit 33, water from the water supply that has passed through the reverse osmosis membrane 34 is supplied to the water distribution pipes 31 (1) to 31 (4) branched into four via the water distribution pipe 31. To. The water supplied to the four water distribution pipes 31 (1) to 31 (4) has a particle size from a plurality of spray nozzles 32 arranged in the immediate vicinity of the turnout rails 10 (1) and 10 (2). Is sprayed as a small mist that easily vaporizes. The reverse osmosis membrane 34 is not an essential configuration.

As shown in FIG. 8, the rail cooling system according to the second embodiment is formed by spraying mist toward both side surfaces of the turnout rail 10 (1) and the turnout rail 10 (2). Both sides of the turnout rail 10 of the above are directly cooled. The side surface of the turnout rail 10 has a larger surface area than the upper surface, and by directly cooling both side surfaces, the turnout rail can be efficiently cooled.

FIG. 9 is a diagram showing a layout of a plurality of spray nozzles 32 according to the second embodiment of the present invention. The plurality of spray nozzles 32 are connected to the water distribution pipe 31 at appropriate intervals according to the installation environment. Further, the plurality of spray nozzles 32 select the particle size of the mist to be sprayed so as to have an appropriate value according to the installation environment.

Further, each of the plurality of spray nozzles 32 in the second embodiment is arranged so that the spray direction is inclined from a direction perpendicular to the side surface of the rail to be cooled (when the turnout rail 10 is viewed from above). ing. By directing the spray nozzle 32 diagonally in this way, the distance from the tip of the spray nozzle 32 to the rail can be further increased.

Therefore, it is possible to further widen the spray range on the side surface of the rail by one spray nozzle. As a result, the number of spray nozzles 32 to be installed in a limited space can be reduced as compared with the case where the spray nozzles 32 are installed in a substantially vertical direction as in the first embodiment, and the system can be constructed. It becomes easy and the price can be reduced.

Further, by increasing the distance from the tip of the spray nozzle 32 to the rail, the mist to be sprayed is easily vaporized, and it is possible to reduce the wetting of the ballast.

Depending on the height at which the spray nozzle 32 is installed, the rail may be installed diagonally upward with an elevation angle so as not to wet the ballast as much as possible while wetting the rail.

Further, by installing the spray nozzle 32 at an angle from the vertical direction, the cooling effect is reduced due to the deviation of the spray direction due to the influence of the wind in the direction parallel to the turnout rails 10 (1) and 10 (2). It has the effect of suppressing that. Therefore, this effect will be described next.

As shown in FIGS. 7 and 9, the plurality of spray nozzles 32 in the second embodiment are installed so as to be inclined from a direction perpendicular to the side surface of the rail. Further, looking at the turnout rail 10 (1), the spray nozzle 32 connected to the water distribution pipe 31 (1) and the spray nozzle 32 connected to the water distribution pipe 31 (3) are tilted in different directions. is set up.

Specifically, the tip of the spray nozzle 32 connected to the water distribution pipe 31 (1) is arranged so as to face the train traveling direction side (right side on the paper in FIG. 7), while the water distribution pipe is arranged. The tip of the spray nozzle 32 connected to 31 (3) is arranged so as to face the opposite side (left side on the paper in FIG. 7) in the traveling direction of the train.

Here, assuming that the direction in which the tip of the spray nozzle 32 faces the train traveling direction side is the positive direction, the direction in which the tip of the spray nozzle 32 faces the opposite side of the train traveling direction can be expressed as the negative direction. That is, the spray nozzles 32 arranged so as to sandwich the turnout rail 10 are arranged so that one faces the plus direction and the other faces the minus direction.

Specifically, the spray nozzle 32 may be tilted by 30 to 60 ° in the plus direction or the minus direction from the direction perpendicular to the side surface of the rail.

Similarly, looking at the turnout rail 10 (2), the spray nozzle 32 connected to the water pipe 31 (2) and the spray nozzle 32 connected to the water pipe 31 (4) are tilted in different directions. is set up.

Specifically, the tip of the spray nozzle 32 connected to the water distribution pipe 31 (2) is arranged at an angle so as to face the positive direction, that is, the train traveling direction side (the right side on the paper in FIG. 7). On the other hand, the tip of the spray nozzle 32 connected to the water distribution pipe 31 (4) is arranged so as to face in the minus direction, that is, the opposite side of the train traveling direction (the left side on the paper in FIG. 7). ..

In this way, by tilting the direction of the spray nozzle 32 on both side surfaces of the rail so as to be tilted from the direction perpendicular to the rail side surface and in different directions from each other, the turnout rails 10 (1) and 10 (2) can be obtained. The influence of winds in parallel directions can be mitigated.

Specifically, the turnout rail 10 (1) will be described as an example. First, consider the case where the spray nozzle 32 is installed substantially perpendicular to the water distribution pipe 31 (1) and the water distribution pipe 31 (3). In this case, when the wind blows in the direction parallel to the turnout rail 10 (1), the turnout rail 10 (1) is transmitted from the spray nozzle 32 connected to each of the water distribution pipe 31 (1) and the water distribution pipe 31 (3). The mist sprayed on both sides of the rail is displaced from the spraying direction or the substantially vertical direction due to the influence of the wind, so that the mist is flown in the direction along the side surface of the rail, and the cooling effect on both sides is reduced. Will end up.

Next, the cooling effect of the turnout rail 10 (1) by the spray nozzles 32 arranged as shown in FIG. 7 will be described. Assuming that the wind is blowing from right to left on the paper surface of FIG. 7, the mist sprayed from the spray nozzle 32 connected to the water distribution pipe 31 (3) shifts in the spray direction due to the influence of the wind. As a result, the air is washed away along the side surface of the rail, and the cooling effect is reduced.

However, the mist sprayed from the spray nozzle 32 connected to the water distribution pipe 31 (1) is displaced in the spray direction due to the influence of the wind, so that the mist is flowed in a direction approaching perpendicular to the rail side surface. Therefore, the side surface of the rail can be reliably cooled, and the cooling effect is enhanced by shifting the spraying direction due to the influence of the wind.

As a result, on one side surface of the turnout rail 10 (1), the cooling effect is reduced due to the deviation of the spraying direction due to the influence of the wind, but the cooling effect is conversely enhanced on the other side surface, and cooling by one side surface is performed. By offsetting the reduction in the effect by the improvement in the cooling effect on the other side surface, it is possible to suppress the reduction in the cooling effect of the turnout rail 10 (1) as a whole.

Therefore, when the spray nozzles 32 are arranged at an angle from the vertical direction as shown in FIG. 7, the number, pitch, and rail side surfaces of the spray nozzles 32 can be obtained so that a desired cooling effect can be obtained in the absence of wind. By designing the distance, it is possible to mitigate the reduction of the cooling effect due to the influence of the wind in the direction parallel to the turnout rails 10 (1) and 10 (2).

FIG. 10 is an overall view of the rail cooling system according to the second embodiment of the present invention. The rail cooling system according to the second embodiment includes a spray control unit 1, a turnout rail temperature sensor 2, a rainfall sensor 3, a water distribution pipe 31, 31 (1) to 31 (4), a spray nozzle 32, a pump unit 33, and a reverse osmosis. It is configured to include a permeable membrane 34 and a valve 35. The spray control unit 1, the turnout rail temperature sensor 2, the rainfall sensor 3, and the valve 35 are components that are not shown in FIG. 8 above.

The configuration of FIG. 10 in the second embodiment is only changed from two systems to four water pipes 31 as compared with the configuration of FIG. 5 in the previous embodiment 1. Therefore, the basic control is the same in the first and second embodiments, and the description thereof will be omitted.

As described above, according to the second embodiment, the spray nozzles installed on both sides of the rail spray mist toward both side surfaces of the rail. As a result, it is possible to realize a rail cooling system in which the rail can be cooled without extremely wetting the ballast, that is, without wetting the crushed stones accumulated under the ballast, and the system is easy to install.

Further, the control configuration can be configured so that the mist spraying / stopping can be switched according to the detection result of the temperature sensor or the rainfall sensor. Further, it is provided with a configuration in which intermittent operation can be executed when it is determined that spraying is necessary according to the detection result. As a result, more efficient cooling can be performed.

Furthermore, as a measure against the mist being washed away by the wind, the spray nozzles installed on both sides of the rail can be tilted from the direction perpendicular to the rail side surface and in different directions. It is possible to suppress the reduction of the cooling effect. As a result, a sufficient cooling effect can be realized even when there is wind.

In the above-described first and second embodiments, the turnout rail will be described as an example of the rail to be cooled, and the case where mist is sprayed on the side surface of the rail will be described in detail. However, the effect of "cooling the rail without extremely wetting the ballast" can be obtained even when the mist is sprayed on a portion other than the side surface of the rail.

Finally, a specific fixing method of the spray nozzle 32 will be supplementarily described.
As shown in FIG. 1, the position of the turnout rail 10 moves between the first state of FIG. 1 (a) and the second state of FIG. 1 (b). Therefore, when the spray nozzle 32 is fixedly installed on a sleeper or the like, the distance between the side surface of the turnout rail 10 and the spray nozzle 32 actually varies between the first state and the second state.

Therefore, in the present invention, a desired cooling effect is realized by devising the arrangement of the spray nozzles when fixing the spray nozzles 32 to the sleepers arranged so as to cross the rails. That is, the distances from the side surfaces of the plurality of spray nozzles 32 fixed to the sleepers are predetermined within the movable range in which the turnout rails 10 (1) and 10 (2) move in order to switch the traveling lane. It is placed in an appropriate position so that it fits within the specified range. As a result, a desired cooling effect can be realized even when the distance between the side surface of the turnout rail 10 and the spray nozzle 32 fluctuates as the turnout rail 10 moves.

When the rail to be cooled does not move like a turnout rail, the distance between the spray nozzle and the rail to be cooled is always constant by arranging a plurality of spray nozzles 32 using sleepers. It becomes possible to keep it in.

1 Spray control unit, 2 Turnout rail temperature sensor, 3 Rainfall sensor, 10, 10 (1), 10 (2) Turnout rail, 11, 12 main line rail, 21 1st main line, 22 2nd main line, 23 Third main line, 31, 31 (1) to 31 (4) water distribution pipe, 32 spray nozzle, 33 pump unit, 34 reverse osmosis membrane, 35 valves.

Claims (3)

A rail cooling system that cools the rails for running railroad vehicles.
Of the rails, the turnout rail provided between the pair of main rails is targeted for cooling.
A plurality of spray nozzles for spraying mist having an average particle size of 50 μm or less toward the turnout rail are provided.
Each of the plurality of spray nozzles is arranged at a position where mist can be sprayed on the inner side surface of the turnout rail provided between the pair of main rails, and from the tip of the spray nozzle to the turnout rail. It is placed at a position where the distance to the inner side surface is in the range of 25 cm to 150 cm.
A wind that is arranged at one end or both ends of the spray section by the plurality of spray nozzles in a direction orthogonal to the turnout rail and suppresses the mist sprayed from each of the plurality of spray nozzles from being affected by the wind. Plate
Rail cooling system further equipped with. The rail cooling system according to claim 1, wherein each of the plurality of spray nozzles is installed at a position lower than the height of the turnout rail. The rail cooling system according to claim 1 or 2 , wherein each of the plurality of spray nozzles sprays intermittently.

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