KR101529935B1 - A Rail temperature adjusting device for Rail buckling - Google Patents

Abstract

The present invention relates to a railway rail temperature controlling device and, more specifically, to a railway rail temperature controlling device capable of being easily installed by using the heat conductivity difference of materials, reducing maintenance expenses by comprising few components due to a simple structure, and desirable for a railroad, an eco-friendly transportation means if using renewable energy. In the railway rail temperature controlling device, the present invention includes a connecting wire transmitting thermal energy to a radiating device; the radiating device having a large surface area enabling a convection current to the outside of a radiation plate and radiative heat transmission; and a rail temperature controlling device receiving power generated by renewable energy generation such as a natural cooling method using a train draft or solar power generation or wind power generation to forcibly circulate; and a thermal grounding rod grounded to transmit the heat of the radiating device.

Description

[0001] The present invention relates to a rail temperature adjusting device for rail buckling,

The present invention relates to a railway rail temperature control device, and more particularly, to a railway rail temperature control device that uses a difference in thermal conductivity of a material and thermal grounding with a ground to easily install, The present invention relates to a railway rail temperature control apparatus suitable for an environmentally friendly railway by utilizing renewable energy.

Most of the railway railways are subject to seasonal changes such as swelling in hot summer and severe shrinkage in cold winter due to natural phenomena. The temperature that causes the deformation of the railway rail is the most important factor that is essential for the safe operation of the train.

Generally, in case of gravel surface, extrusion or buckling due to track misalignment and extension and contraction of the rail is the main cause of orbital maintenance. In particular, damage caused by new construction can lead to a major accident if it is wrong. On May 31, 2013, at 15:11, the 3385 freight train was orbited from the 12th to the first rear 20th track from the center during the operation between the castle stations, But it caused economic loss such as train delays (see FIG. 1). The temperature of the rail at the time of the accident was 55 ℃. In order to prepare for such an accident, it is urgent to identify the cause.

The cause of the line expansion is the temperature of the rail. If the atmospheric temperature is around 35 ℃, the line temperature will rise to more than 55 ℃, which is about 15 ~ 20 ℃ depending on the surrounding environment, and the rail may expand and warp. In summer, the maximum temperature of the rail will rise to 80 ℃ . When a stretch of a straight rail (a rail with a length of 25 m) is 10 cm, a long rail (a rail with a length of 200 m or more) is stretched eight times, 80 cm.

If the axial force is excessively increased due to such a temperature change, it causes a serious problem in the train operation such as buckling of the track or breaking of the rail. As soon as the temperature applied to the rail rail orbit reaches the buckling temperature, buckling occurs in the orbit.

Also, even if the buckling temperature is below the safe temperature, the trajectory may become unstable due to the external load due to the train.

To compensate for this, we use stretch joints, but damage due to stretching is not solved properly.

In addition, lowering the temperature of the rail using water is only a temporary effect and requires a lot of water and manpower, which is inefficient (see FIGS. 1 (b) and (c)).

The rail temperature measurement system according to the prior art is shown in FIGS. 2 and 3. FIG.

FIG. 2 shows a preventive maintenance system to cope with raising the rail temperature by monitoring the outside temperature and the rail temperature in real time.

The server 1, the client 2, the data transmission device 3, the temperature collecting device 4, the rail temperature detecting device 5, etc., are used for this purpose.

Fig. 3 shows the connection of the conventional complex (a) product temperature sensing device and (b) the appearance of the temperature collecting device and the connection with rails and the like.

In addition to this, in the prior art, Korean Patent No. 0174771 discloses a conventional method of measuring and confirming the temperature information of the rail and the measured position information in real time on a running train

When the rail temperature detection device detects danger information in the measuring section, there is a risk of derailment of the train if there is insufficient response in the train engine room for the above danger information, and when there is a risk of train derailment, There is a problem that the safe operation of the train is hindered.

Therefore, in order to reduce the temperature of the rail, which is the cause of the expansion and contraction of the railway rail, the difference in the thermal conductivity of the material is used to simplify the structure so that the heat can be released separately. A new, economical rail temperature controller is needed.

KR 100174771 Issue B1

In order to solve the above-mentioned problems, the present invention is intended to prevent railway accidents such as derailment of a railway vehicle, which may occur due to rail buckling or track misalignment, by adjusting the rail temperature which changes greatly during a hot or cold weather, And the second purpose is to reduce the huge line maintenance cost caused by this.

The present invention relates to a railway rail temperature control apparatus, a railway rail temperature control apparatus, a railway rail temperature control apparatus, and a railway rail temperature control apparatus. The railway rail temperature control apparatus includes a heat dissipation device A fan unit that is provided with a heat dissipation device and forcedly circulates power by renewable energy generation including solar or wind power generation, and a heat ground rod for grounding and conducting heat by grounding thermal energy of the heat dissipation plate.

In one embodiment, the seam is adapted to transfer or receive heat through a copper or hollow tube to raise or lower the temperature of the rail.

In one embodiment, the heat dissipating device is formed by folding a flat plate member at least once, forming a plurality of cooling fins extending in at least one direction, and spaced apart from each other.

In one embodiment, a fan device that uses power of renewable energy is configured to increase the cooling efficiency of the heat sink.

In one embodiment, the thermal grounding bar connected to the heat dissipating device is buried in the ground to increase the heat radiation function of the cooling fin.

In one embodiment, the heat dissipation device is further provided with a screening film for blocking external thermal energy.

According to the present invention, the difference in thermal conductivity of the material is used to facilitate the installation, the structure is simple, the number of parts is small, and the maintenance cost of the product is low.

In addition, the present invention uses power train, solar wind, wind power or the like generated when a train arrives, so that it does not require energy consumption or is suitable for an environmentally friendly railway when utilizing renewable energy and consumes less energy and manpower. It is competitive and competitive.

FIG. 1 is a photograph showing an event that caused an economic loss such as a train delay due to rail buckling.
FIG. 2 is a schematic diagram of a maintenance-level maintenance system for monitoring the outside temperature and the rail temperature in real-
Fig. 3 shows (a) the product temperature sensing device, (b) the appearance of the temperature collecting device, and the connection relationship with the rails and the like.
FIG. 4 is a diagram showing an overall configuration according to an embodiment of the present invention divided into (a) and (b) when power is not used and (c) when power is used.
FIG. 5 is a photograph showing an experiment of the railroad rail temperature control device according to the present invention in comparison with the conventional invention.
6 is a diagram showing the overall configuration of a railroad rail temperature control apparatus according to another embodiment of the present invention.
Fig. 7 is a view showing in detail the constitution of the shielding film, the heat dissipating device, and the like of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings.

For a better understanding of the present invention, a preferred embodiment of the present invention will be described with reference to the accompanying drawings. The embodiments of the present invention may be modified into various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. The present embodiments are provided to enable those skilled in the art to more fully understand the present invention. Therefore, the shapes and the like of the elements in the drawings can be exaggeratedly expressed to emphasize a clearer description. It should be noted that in the drawings, the same members are denoted by the same reference numerals. Further, detailed descriptions of well-known functions and configurations that may be unnecessarily obscured by the gist of the present invention are omitted.

As shown in FIGS. 4 to 7, the present invention mainly includes a seam line 20 connected to the heat dissipating device 30 to transmit the temperature of the rail, And a rail temperature control unit 25 for controlling the temperature of the rail to increase or decrease the temperature of the rail through an external energy source including a solar heating device and the like. (C) in which power is supplied by renewable energy generation including wind power generation, and power for forced circulation through a fan is used.

The rail temperature regulating device 25 is provided with a heat dissipating device 30 having a large surface area to allow convection and radiant heat transfer to the outside of the heat sink and a heat sink 30 that is a natural cooling type by a heat wind or a regenerative energy generation including solar heat or wind power, And adjusts the temperature for forced circulation.

In order to facilitate the temperature adjustment, the rail temperature controller 25 may be provided with a paint and a heat insulating material for blocking external heat energy.

Hereinafter, the rail temperature reducing apparatus or method will be described in order to easily explain the apparatus for adjusting the rail temperature. However, a method using a heating cycle for adjusting the rail temperature may be used. That is, the present invention not only prevents derailment of a railway vehicle, which may be caused by buckling of rail or bucket rail, but also prevents excessive shrinkage and cracking of the rail during a cold period.

The heat dissipating device 30 of the rail temperature adjusting device 25 may be made of silver, copper, gold, aluminum, or an alloy thereof, which is excellent in thermal conductivity, and is capable of heat transfer and convection and radiative heat transfer to the outside of the heat sink. And the shielding film 16 is provided to shield the heat energy received from the sunlight.

Accordingly, the seam line 20 can transmit or receive the heat of the rail through a copper plate or a hollow tube having a good thermal conductivity in the form of a cable, and can easily transmit the temperature of the rail.

According to one embodiment of the present invention, the heat dissipating device 30 is formed by overlapping a plurality of cooling fins 14 formed by folding a thin flat plate member at least once and extending in at least one direction.

Further, one end of the cooling fin 14 may be folded at least two times and folded in a zigzag form.

As shown in FIG. 7, it may include a plurality of hollow tubes in the shielding film 16, and a plurality of cooling fins 14 coupled to the plurality of hollow tubes and spaced apart from each other along the hollow tubes.

According to an embodiment of the present invention, a semicircular hollow tube having diameters different from each other may be disposed in parallel with each other with the same center, or a semicircular hollow tube having diameters different from each other may be connected to each other.

Alternatively, the hollow tube may be arranged in an annular or circular shape to form a heat transfer path according to an embodiment of the present invention, and the cooling fin 14 may be radially arranged outside the hollow tube to induce cooling of the heat- have.

Meanwhile, the present invention includes a heat dissipating device (30) and a seam line (20) for transferring the temperature energy to the rail.

The seam line 20 transmits or receives the heat of the rail through a metal plate having a high heat transfer rate (for example, a copper plate or an aluminum plate).

In an embodiment, the rail temperature control device may be a natural cooling type by a heat wind or a forced circulation type by regenerative energy, so that the heat of the heat dissipating device 30 may be discharged to the outside.

That is, according to the conventional invention, the rail temperature can be immediately adjusted to prevent railway accidents such as derailment of a railroad car, which may be caused by rail buckling or track misalignment, or to reduce the cost of line maintenance.

According to an embodiment of the present invention, a thermal ground bar 60 directly connected to the rail temperature controller 25 or the rail for the purpose of further lowering the heat energy of the heat sink 30 and embedded in the ground for ground and thermal conduction Can be further connected.

The thermal grounding bar is used as a means to deliver faster speeds to reduce the temperature between the heat sink and the rail.

Hereinafter, a method for carrying out the present invention will be described in detail with reference to the drawings.

The heat of the rails is transferred to the heat dissipating device 30 through the seam line 20 according to the thermal conductivity according to the following equation (1).

For example, if you have a 25m straight rail (a rail with a rail length of 25m), install two heat sinks (30) on one rail to lower the temperature.

(Equation)

Here, the material of the rail is iron, the thermal conductivity of iron is 45 kcal / mhr ° C, and the copper is about 7 times larger, 300 to 340 kcal / mhr ° C. When applied to the above equation (1) to the device if the constant k _1, the constant k ₂ of copper work of rail ₁ is k = 7 k _2.

The rail temperature is adjusted to a certain temperature or lower by using the above equation.

As shown in FIG. 6, the structure of the heat dissipating device 30 according to the present invention is such that a shielding film 16 is installed on a heat sink to block heat energy received from sunlight, and a hollow tube or a copper wire is connected to a vertical- The heat is quickly released through the fan of the rail temperature controller 25 using the wind. At this time, the size of the heat dissipating device 30 is designed so that the volume is not more than 0.3 m 3, so that it does not exceed the vehicle and building limits.

Therefore, the present invention operates in a stage where the rail temperature is naturally adjusted when the rail temperature is raised or lowered to a certain temperature or lower in a hot or cold weather.

Here, the rail temperature control step can adopt forced circulation by natural cooling type or renewable energy (solar or wind power generation) by the train wind, but the selection criteria can be changed according to the train car and the architectural design standard, For example, it is desirable that the size of the heat dissipating device is designed so that the volume is 0.3 m 3 or less and does not exceed the above limit.

The seam line (20) can be used to control the rail temperature according to the principle that the heat energy is transmitted to the rail and the high thermal energy and low heat energy form the temperature equilibrium over time.

As shown in FIG. 5, which is an experiment for moving the heat of the rail to the heat dissipating device 30 through the copper wire utilizing the thermal conductivity according to Equation (1), (a) (C) a case where the railroad rail temperature control device according to the present invention is mounted, and the final test temperature after a predetermined time is 41.9 ° C, 50.0 ° C and 41.3 ° C in order, When the temperature of the rail surface rises due to the heat source, a copper plate or a hollow plate connected through the lower portion of the rail is connected to the heat dissipating device 30 to emit heat, thereby lowering the rail temperature.

Also, as shown in FIG. 6, Case 1 of the first embodiment is an experiment of reducing the temperature using the fan of the rail temperature controller 25 and using the cooling pin 14 according to the present invention. Case 2 is a test of temperature reduction using paint and insulating material according to the prior art. Case 3 is a test of the existing rail.

Therefore, it can be seen that the method of adjusting the rail temperature according to the principle of thermal equilibrium over time is superior.

As another embodiment of the present invention, a GPS module for generating GPS position information capable of accurately transmitting the position of the railway may be additionally provided, and the position information and the temperature information may be linked and controlled.

In addition, it is necessary to statistically analyze the associated position information and temperature information, and to observe the trend of the rail temperature changes statistically at each central railway management center, to quickly determine the maintenance of the rail with many problems such as sudden temperature changes It is possible.

Also, it is important to arrange and control the long rail due to the expansion and contraction according to the temperature change. It is necessary to calculate the axial force existing inside the rail by the expansion and contraction of the rail according to the temperature change. It is preferable to perform statistical analysis.

The present invention is highly available in that it is simple to install, has a simple industrial structure, and does not incur large costs.

Therefore, the present invention is easy to install, the number of parts is small, and the maintenance cost of the product is low.

Particularly, since the conventional rail watering manpower requires at least five people as shown in FIG. 1, it is necessary to waste about 150 million won per area (annual salary of 30 million won × 5 persons = 150 million won) based on one local office This can save you money.

Also, if the temperature of the mounting rail (25m rail) is lowered and the expansion / contraction amount is reduced by 30mm, it can be lowered by 240mm on the pole rail (200m rail). This can be used for pole rails of high-speed railway lines to reduce large numbers.

In addition, when one axle heat, rain, and strong wind measurement devices used in the domestic railway environment are installed every 50 km, this device has one set for every 1 km before and after the curved section which receives a lot of external force, In the case of installing one set every 5 km, industrial use is efficient.

In addition, if energy consumption is not needed or renewable energy is utilized, it is suitable for environmentally friendly railway industry.

In other words, the rail temperature control system is a very economical and competitive product in the railway industry because it consumes less energy and manpower.

The railway industry is also effective in preventing railway accidents such as derailment of railway cars, which may be caused by rail buckling or track misalignment, or to reduce the cost of line maintenance.

It will be appreciated that the railway rail temperature controller of the present invention described above is merely an example, and that various modifications and equivalent other embodiments will be apparent to those skilled in the art to which the present invention pertains .

Therefore, it is to be understood that the present invention is not limited to the above-described embodiments. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims. It is also to be understood that the invention includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

14: cooling pin 16:
20: seam line 25: rail temperature control device
30: heat sink 60: thermal ground bar

Claims (5)

A railway rail temperature controller, comprising:
A seam to transfer the temperature energy of the rail to the heat sink;
A heat dissipating device having a large surface area to allow convection and radiative heat transfer to the outside of the heat sink; A shielding film provided to shield external heat energy from the heat dissipating device;
A natural cooling type by a heat wind, a power supplied by renewable energy including solar or wind power generation, forcibly circulating the ambient air around the seam or the heat radiation device through a fan, A rail temperature adjusting device characterized by being coated with a heat insulating material;
A thermal ground bar directly connected to the rail temperature control device or the rail for the purpose of further lowering the thermal energy of the heat sink and embedded in the ground for ground and thermal conduction;
The heat dissipating device includes a cooling fin, which is formed by folding a flat plate member at least once or more in a zigzag shape, extending in at least one direction, forming a plurality of overlapping portions,
Wherein the rail temperature adjusting device or the heat dissipating device adjusts the temperature of the rail so as to increase or decrease the temperature of the rail by transmitting or receiving heat through the copper plate or the hollow pipe.
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