JP6932504B2 - 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. If the ballast is wetted by watering, 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 for cooling a rail for traveling of a rail vehicle, and includes a plurality of nozzles for injecting water toward the side surface of the rail, and each of the plurality of nozzles has a side surface. It has an injection port that injects water in a water discharge pattern that matches the shape of the area to be cooled , and one of the directions along the rail is the positive direction and the other is the negative direction. When the tilt direction of the nozzle is positive, the tilt direction of the second nozzle arranged on the other side surface of the rail is negative, and the first nozzle and the second nozzle are in different directions. It is installed so that it can be tilted.

According to the present invention, a nozzle installed toward the side surface of the rail is provided to inject water in a water discharge pattern corresponding to the shape of the rail on the side surface. 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 a turnout rail. 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 nozzles which concerns on Embodiment 1 of this invention. It is a figure which shows the structure of the nozzle which concerns on Embodiment 1 of this invention. It is a figure for demonstrating the effect at the time of injecting water toward a rail which is a cooling target by the nozzle which concerns on Embodiment 1 of this invention. It is a figure which showed the variation of the shape pattern of the water ejected from the nozzle 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 water discharge control executed by the water discharge control part 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. It is explanatory drawing which showed the structure seen from the AA cross section of FIG. 10 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 nozzles 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 rails for traveling of railway vehicles.

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, and in the worst case, it causes derailment of the vehicle. When the turnout rail 10 is cooled by discharging water, as described above, there is a problem that finely divided stones are fixed. Therefore, in order to solve such a problem, in the first embodiment, it is technically applied to apply a nozzle capable of injecting cooling water in a pattern corresponding to the side shape of the rail to be cooled. It is a feature, and will be described in detail below 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 200 cm) and is a turnout rail 10 (1) or a turnout rail 10 (2). ) Within a predetermined range (the distance within which the water jetted from the nozzle 32 reaches the turnout rail 10 (2), for example, 25 to 150 cm) so that the turnout rail 10 ( A plurality of nozzles 32 are arranged substantially perpendicular to 1) and 10 (2).

Depending on the height at which the 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 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 is supplied to the water distribution pipes 31 (1) and 31 (2) branched into two via the water distribution pipe 31. The water supplied to the two water distribution pipes 31 (1) and 31 (2) is suitable for cooling from the plurality of nozzles 32 arranged in the immediate vicinity of the turnout rails 10 (1) and 10 (2). Water adjusted to the discharge pressure and flow rate is injected.

As shown in FIG. 3, in the rail cooling system according to the first embodiment, water is sprayed 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 nozzles 32 according to the first embodiment of the present invention. The plurality of nozzles 32 are connected to the water distribution pipe 31 at appropriate intervals according to the installation environment, and inject cooling water toward the side surface of the rail 10 to be cooled. The water discharge pressure and the flow rate of the plurality of nozzles 32 can be selected in advance so as to have appropriate values according to the installation environment.

Unlike the conventional water discharge method, the rail cooling system in the first embodiment has a water discharge shape that allows the water supplied from the water distribution pipe 31 by a plurality of nozzles 32 to match the side shape of the rail 10 to be cooled. As a result, a cooling method is adopted.

That is, as the nozzle 32, it is common to adopt a nozzle that injects water in a conical pattern. On the other hand, in the first embodiment, the nozzle 32a capable of injecting water in a pattern corresponding to the shape of the side surface of the rail so as to secure the cooling effect of the rail and reduce the amount of water discharged to the ballast. It is a technical feature that it has. Therefore, the nozzle 32a having such technical features will be described in detail with reference to the drawings.

FIG. 5 is a diagram showing the configuration of the nozzle 32a according to the first embodiment of the present invention. As shown in FIG. 5, in the nozzle 32a in the first embodiment, the injection port 32b for injecting water has a rectangular shape.

FIG. 6 is a diagram for explaining the effect of injecting water toward the rail 10 to be cooled by the nozzle 32a according to the first embodiment of the present invention. FIG. 6A is a top view of the rail 10 as viewed from above, and FIG. 6B is a side view showing the water discharge state of the side surface of the rail 10 to be cooled.

Further, in order to explain the effect of the nozzle 32a according to the first embodiment, water is sprayed from a general nozzle 32 on the left side in FIGS. 6 (a) and 6 (b) in a conical pattern. The state is shown, and on the right side in FIGS. 6 (a) and 6 (b), the state in which water is ejected from the nozzle 32a according to the first embodiment in a rectangular pattern is shown.

As is clear from FIG. 6B, when water is sprayed from the nozzle 32 in a conical pattern, the area S2 that does not directly hit the side surface of the rail 10 other than the area S1 that hits the side surface of the rail 10 However, water is discharged. Therefore, the cooling efficiency is lowered, and the water discharged to the region S2 is dropped onto the ballast.

On the other hand, when water is sprayed from the nozzle 32a in the first embodiment in a rectangular pattern, all of the rectangular region S3 directly hits the side surface of the rail 10. As a result, as compared with the case where the nozzle 32 is used, the nozzle 32a requires only the amount of water required for cooling and is not wasted. That is, the cooling efficiency can be increased and the amount of water discharged onto the ballast can be reduced.

Further, as is clear from FIGS. 6A and 6B, when the nozzle 32a is used, all the amount of water discharged is sprinkled on the area S3 corresponding to the area of the area S1 + the area S2. be able to. Therefore, the nozzle 32a can discharge water at a wider angle than when the nozzle 32 is used.

As a result, when the pitch when installing the nozzle 32 is P1 and the pitch when installing the nozzle 32a is P2, P2 can be set to a larger value than P1, and the number of nozzles 32a installed can be reduced. It is also possible.

FIG. 7 is a diagram showing variations in the shape pattern of water ejected from the nozzle 32a according to the first embodiment of the present invention. In FIGS. 5 and 6 above, a case where water is discharged from the nozzle 32a in a rectangular pattern as shown in FIG. 7A has been illustrated. However, the water discharge pattern that can be adopted in the first embodiment is not limited to such a rectangular pattern, and is an elliptical pattern as shown in FIG. 7 (b) and a small circular pattern as shown in FIG. 7 (c). Even if the continuous arrangement of the nozzles is adopted, it is possible to realize a water discharge pattern that matches the shape of the cooling target area on the side surface. The water discharge patterns are not continuous, and the rail cooling effect occurs even if they are separated.

Next, the control operation of the rail cooling system according to the first embodiment will be specifically described. FIG. 8 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 water discharge control unit 1, a turnout rail temperature sensor 2, a rainfall sensor 3, a water distribution pipe 31, 31 (1), 31 (2), a nozzle 32, a pump unit 33, and a valve. It is configured with 35. The water discharge 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 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 water discharged from the nozzle. For example, the rainfall sensor 3 is provided on a box body for accommodating the pump unit 33.

Then, the water discharge control unit 1 controls the injection / stop of water 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. 9 is a diagram showing an example of water discharge control executed by the water discharge control unit 1 of the rail cooling system according to the first embodiment of the present invention. When the water discharge control unit 1 determines from the detection result of the rainfall sensor 3 that it is raining, the water discharge control unit 1 stops the operation of the water discharge 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 water discharge control unit 1 switches and controls the operation / stop of the water discharge system according to the temperature measurement result of the turnout rail 10. .. In the specific example shown in FIG. 9, the water discharge 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 water discharge system is put into the operating state and water is discharged.

Further, the water discharge control unit 1 determines that cooling with water 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 drive of the unit 33 and switching the valve 35 to the closed state, the water discharge system is stopped and the water discharge 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 water discharge system may be put into an operating state to discharge water.

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.

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

Specifically, according to the intermittent operation data set in advance, as an example, it is conceivable to repeat water discharge for 5 seconds and stop for 2 minutes. It is also possible to set intermittent operation data in advance so that the water discharge 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. ..

In addition, depending on the installation environment of the turnout rail 10, the jetted water may flow downwind when there is wind, and the turnout rail 10 may not be efficiently wetted, so that a sufficient cooling effect cannot be obtained. Conceivable.

However, as shown in FIGS. 2 and 3, the plurality of nozzles 32 in the first embodiment are between the turnout rail 10 (1) and the turnout rail 10 (2), and the turnout rail 10 is used. The layout is such that it is installed at a position lower than the heights of (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 nozzles or at one end or both ends of the water discharge 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 water discharge section so that it will be applied to the turnout rails 10 (1) and 10 (2) even if water is swept downwind when there is wind. It is also conceivable to add a nozzle 32 and adopt a configuration in which water can be discharged to a wider area.

As described above, according to the first embodiment, all or most of the injected water can be discharged directly to the side surface of the rail to be cooled. As a result, it is possible to realize a rail cooling system capable of cooling the rail more effectively without extremely wetting the ballast. Further, the number of installed nozzles can be reduced, and the cost of the system can be reduced.

Further, the control configuration can be configured so that injection / stop can be switched according to the detection result of the temperature sensor or the rainfall sensor. Further, it is provided with a configuration capable of executing intermittent operation when it is determined that water discharge is necessary according to the detection result. As a result, it is not necessary to use wasted water, so that efficient cooling can be performed.

Further, as a measure against the flow of water by the wind, a configuration such as providing a windbreak plate or extending the installation section of the 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 injection direction by the nozzle 32 is substantially perpendicular to the side surface of the rail to be cooled, and the nozzle 32 is connected to the turnout rail 10 (1) and the turnout rail 10 (2). ) And the case where it was installed was explained. On the other hand, in the second embodiment, the nozzles 32 are installed on both sides of the rail to be cooled, and the injection direction is tilted so as to be deviated from the vertical direction. Therefore, the further effect obtained by such installation of the nozzle 32 will be described below.

In the second embodiment, the differences from the first embodiment will be described in detail, and the members corresponding to the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

FIG. 10 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. 10, 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. 10, 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 at a distance within a range in which the water jetted from the nozzle 32 reaches the turnout rail 10. , A plurality of nozzles 32 are arranged.

FIG. 11 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 is supplied to the water distribution pipes 31 (1) to 31 (4) branched into four via the water distribution pipe 31. The water supplied to the four water distribution pipes 31 (1) to 31 (4) is suitable for cooling from the plurality of nozzles 32 arranged in the immediate vicinity of the turnout rails 10 (1) and 10 (2). Water adjusted to the discharge pressure and flow rate is injected.

As shown in FIG. 11, the rail cooling system according to the second embodiment is formed by spraying water 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 part, and by directly cooling both side surfaces, the turnout rail can be efficiently cooled.

FIG. 12 is a diagram showing a layout of a plurality of nozzles 32 according to the second embodiment of the present invention. The plurality of nozzles 32 are connected to the water distribution pipe 31 at appropriate intervals according to the installation environment, and inject cooling water toward the side surface of the rail 10 to be cooled. The water discharge pressure and the flow rate of the plurality of nozzles 32 can be selected in advance so as to have appropriate values according to the installation environment.

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

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

Depending on the height at which the 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 nozzle 32 at an angle from the vertical direction, the cooling effect is reduced due to the deviation of the water discharge direction due to the influence of the wind in the direction parallel to the turnout rails 10 (1) and 10 (2). Has the effect of suppressing. Therefore, this effect will be described next.

As shown in FIGS. 10 and 12, the plurality of 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 nozzle 32 connected to the water distribution pipe 31 (1) and the nozzle 32 connected to the water distribution pipe 31 (3) are installed so as to be tilted in different directions. ing.

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

Here, assuming that the direction in which the tip of the nozzle 32 faces the train traveling direction side is the positive direction, the direction in which the tip of the nozzle 32 faces the opposite side of the train traveling direction can be expressed as the negative direction. That is, the 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 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 nozzle 32 connected to the water pipe 31 (2) and the nozzle 32 connected to the water pipe 31 (4) are installed at different directions. ing.

Specifically, the tip of the nozzle 32 (corresponding to the first nozzle) connected to the water pipe 31 (2) faces in the positive direction, that is, the train traveling direction side (right side on the paper in FIG. 7). On the other hand, the tip of the nozzle 32 (corresponding to the second nozzle) connected to the water pipe 31 (4) is in the minus direction, that is, on the opposite side of the train traveling direction (paper in FIG. 7). It is tilted so that it faces the left side on the top).

In this way, by tilting the directions of the nozzles 32 on both side surfaces of the rail from the direction perpendicular to the rail side surfaces and in different directions from each other, they are parallel to the turnout rails 10 (1) and 10 (2). The influence of the wind in the direction of the rail can be mitigated.

Specifically, the turnout rail 10 (1) will be described as an example. First, consider the case where the nozzle 32 is installed substantially perpendicular to the water pipe 31 (1) and the water 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 nozzle 32 connected to each of the water distribution pipe 31 (1) and the water distribution pipe 31 (3). The water sprayed on both sides of the rail is discharged in the direction along the side of the rail due to the influence of the wind, and the cooling effect on both sides is reduced. It ends up.

Next, the cooling effect of the turnout rail 10 (1) by the nozzles 32 arranged as shown in FIG. 10 will be described. Assuming that the wind is blowing from right to left on the paper of FIG. 10, the water discharged from the nozzle 32 connected to the water distribution pipe 31 (3) is displaced due to the influence of the wind. Therefore, the water is washed away along the side surface of the rail, and the cooling effect is reduced.

However, the water ejected from the nozzle 32 connected to the water distribution pipe 31 (1) is flowed in a direction approaching perpendicular to the rail side surface due to the deviation of the water discharge direction due to the influence of the wind. Therefore, the side surface of the rail can be reliably cooled, and the water discharge direction shifts due to the influence of the wind, so that the cooling effect is enhanced.

As a result, on one side surface of the turnout rail 10 (1), the cooling effect is reduced due to the deviation of the water discharge 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 nozzles 32 are arranged at an angle from the vertical direction as shown in FIG. 10, the number, pitch, and distance from the rail side surface of the nozzles 32 are adjusted so that a desired cooling effect can be obtained in the absence of wind. By designing the inclination from the vertical direction, 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. 13 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 water discharge control unit 1, a turnout rail temperature sensor 2, a rainfall sensor 3, a water distribution pipe 31, 31 (1) to 31 (4), a nozzle 32, a pump unit 33, and a valve. It is configured with 35. The water discharge 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. 11 above.

The configuration of FIG. 13 in the second embodiment is only changed from two systems to four water pipes 31 as compared with the configuration of FIG. 8 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, all or most of the water ejected from the nozzles installed on both sides of the rail can be directly discharged to the side surface of the rail to be cooled. As a result, it is possible to realize a rail cooling system capable of cooling the rail more effectively without extremely wetting the ballast. Further, the number of installed nozzles can be reduced, and the cost of the system can be reduced.

Further, the control configuration can be configured so that the water discharge / stop can be switched according to the detection result of the temperature sensor or the rainfall sensor. Further, it is provided with a configuration capable of executing intermittent operation when it is determined that water discharge is necessary according to the detection result. As a result, more efficient cooling can be performed.

Furthermore, as a measure against water being washed away by the wind, the nozzles installed on both sides of the rail are tilted so that they are tilted from the direction perpendicular to the rail side surface and in different directions for cooling. The reduction of the effect can be suppressed. 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 water is injected onto the side surface of the rail will be described in detail. However, the effect of "cooling the rail without extremely wetting the ballast" can also be obtained when water is sprayed onto a portion other than the side surface of the rail, for example, the upper surface of the rail.

Finally, a specific method for fixing the 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 nozzle 32 is fixedly installed on a sleeper or the like, the distance between the side surface of the turnout rail 10 and the 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 nozzles when fixing the nozzles 32 to the sleepers arranged so as to cross the rails. That is, the distances from the side surfaces of the plurality of 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 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 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 nozzle and the rail to be cooled is always kept constant by arranging a plurality of nozzles 32 using sleepers. It becomes possible.

1 Water discharge 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 nozzles, 33 pump unit, 35 valves.

Claims (1)

A rail cooling system that cools the rails for running railroad vehicles.
It is equipped with multiple nozzles that inject water toward the sides of the rail.
Each of the plurality of nozzles has an injection port for injecting water in a water discharge pattern that matches the shape of the cooling target region on the side surface.
For each of the plurality of nozzles, one of the directions along the rail was a plus direction and the other was a minus direction, and the inclination direction of the first nozzle arranged on one side surface of the rail was the plus direction. In this case, the tilt direction of the second nozzle arranged on the other side surface of the rail is the minus direction, and the first nozzle and the second nozzle are installed so as to tilt in different directions from each other. Rail cooling system.

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