Heat conduction device of railway turnout snow melting system

Abstract

The utility model discloses a heat conduction device of a railway turnout snow melting system. The heat conduction device comprises a heat conduction plate, an insulating layer and a heat preservation layer. The heat conduction device is characterized in that graphite is used as a heat conduction plate in the heat conduction device, a mica insulation layer and a polyurethane heat preservation layer are arranged on the surface, making contact with air, outside the graphite, a metal buckle is arranged outside the heat conduction device, the heat conduction device is installed on the two sides of the sliding bed table through the metal buckle, and the heat conduction device and the sliding bed table are connected together; and the metal buckle is fixed through the hexagonal head bolt and the hexagonal head nut. The heat conduction device provided by the utility model can transfer heat which is originally lost in the air by the heating strip to the slide table, the slide plate and the switch rail, so that the heat efficiency and the snow melting efficiency of the snow melting system are improved, the use of electric energy is reduced, and resources are saved; the thermal uniformity of graphite is good, so that the strength of the sliding table is effectively prevented from being influenced by over-high temperature at a certain position; when individual heat conduction devices are damaged due to extrusion and collision, the heat conduction devices on the sides of the slide plate can be independently disassembled, the practicability is good, and maintenance is convenient.

Description

Technical Field

[0001] This utility model relates to the field of railway turnout snow melting technology, specifically a heat conduction device for a railway turnout snow melting system. Background Technology

[0002] During winter snowfall, railway switches are easily covered by snow and ice. If there is snow or ice on the switches, it will affect the normal switching and sealing of the switches, thereby affecting the train's transportation efficiency and driving safety.

[0003] Currently, the main snow-melting equipment used in my country's railway turnout snow-melting systems is the heating strip, which converts electrical energy into heat energy to achieve snow melting. Existing heating strips are generally made of nickel-chromium alloy, a type of metal. These heating strips can eliminate snow and frost at the turnout switching points, allowing the turnouts to switch, seal, and lock normally, thus not affecting train operation safety. However, this type of metal heating strip has the following shortcomings: most existing heating strips are installed on the inner slope of the stock rail, with only one side attached to the stock rail. The heat transfer rate between the heating strip and the stock rail is very slow, resulting in a high heat loss rate and uneven heat transfer. Furthermore, existing heating strips do not have direct contact with the slide table or slide plate, making direct heating impossible, resulting in poor snow-melting effect and high power consumption. Summary of the Invention

[0004] The purpose of this utility model is to provide a heat conduction device for a railway turnout snow melting system to address the shortcomings mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a heat-conducting device for a railway turnout snow melting system, comprising: a heat-conducting plate, an insulating layer, and a heat-insulating layer, wherein the insulating layer and the heat-insulating layer are disposed on the outer surface of the heat-conducting plate in contact with air. The heat-conducting device has external metal clips that can mount the heat-conducting device to both sides of a slide table. The metal clips are secured by hexagonal head bolts and hexagonal head nuts.

[0006] In this invention, the heat-conducting plate is made of graphite, and the insulation layer is made of mica. Mica has high heat resistance, allowing it to maintain its structure and properties at high temperatures. The insulation layer is made of polyurethane, which has high strength and good water resistance, providing waterproofing while maintaining insulation. The use of graphite in the heat-conducting plate ensures uniform heat distribution. The metal clips in this invention use steel bars to connect the heat-conducting device and the slide table, and are secured with hexagonal head bolts and nuts next to the heat-conducting device.

[0007] The beneficial effects of this utility model are:

[0008] (1) The thermally conductive material used in this invention is graphite. Graphite has a thermal conductivity much greater than that of air, excellent thermal conductivity, and good thermal uniformity. There is no oxidation during the heating process.

[0009] (2) The heat conduction device proposed in this utility model has a large contact area with the slide table, slide plate and switch rail, which ensures the direct contact and heat transfer efficiency of the heat conduction device with the slide table, slide plate and switch rail, thereby improving the efficiency of snow melting.

[0010] (3) The heat conduction device proposed in this utility model can make full use of the heat transferred to the air by the heating strip and transfer it to the slide table, slide plate and tip rail by heat conduction. It has high thermal efficiency, reduces the power consumption and heat loss rate of the heating strip, and greatly improves the efficiency of snow melting. On the basis of the previous method, it can melt snow in a more efficient, energy-saving and low-cost way.

[0011] (4) The heat conduction device proposed in this utility model is fixed with steel bars, hexagonal head bolts and hexagonal head nuts, and installed on both sides of the slide table. When individual heat conduction devices are damaged due to squeezing and collision, the heat conduction devices on the side of the slide table can be disassembled separately, which is practical and easy to maintain.

[0012] (5) The insulation layer greatly reduces the transfer of heat to cold air, saving energy. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the overall front view of the present invention.

[0015] Figure 3 This is a schematic diagram of the heat conduction device of this utility model.

[0016] Figure 4 This is a schematic diagram of the overall structure of the fixing device of this utility model.

[0017] In the diagram: 1. Slide plate, 2. Basic rail, 3. Rubber pad, 4. Heating strip, 5. Point rail, 6. Slide table, 7. Heat conduction device, 8. Metal buckle, 9. Hex head bolt, 10. Hex head nut, 11. Insulation layer, 12. Insulation layer, 13. Heat conduction plate. Detailed Implementation

[0018] This utility model discloses a heat conduction device for a railway turnout snow melting system, which shortens the snow melting time and improves the energy efficiency of the snow melting system.

[0019] The present invention will now be described in detail with reference to the accompanying drawings.

[0020] As shown in the attached figure, the present invention provides a heat-conducting device for a railway turnout snow melting system. The heat-conducting device 7 is installed on both sides of the slide table 6 by a fixing device. The surface of the heat-conducting device 7 that is in contact with the air has a polyurethane insulation layer 11, which reduces heat loss. A mica insulation layer 12 is located between the polyurethane insulation layer 11 and the heat-conducting device 7.

[0021] After the heating bar 4 is powered on, it converts electrical energy into heat energy. The heat conduction device 7 transfers the heat previously dissipated through the air to the slide table 6, slide plate 1 and switch rail 5, reducing the heat dissipated into the air and improving heating efficiency.

[0022] The heat conduction device 7 is installed above the slide plate 1 and on both sides of the slide table 6 by a fixing device, and is closely attached to the heating strip 4 and the slide table 6. The fixing device is fixed by hexagonal head bolts and hexagonal head nuts, so the heat conduction device 7 is easy to disassemble and maintain. The insulation layer 11 is made of polyurethane material, which meets the requirements of compression resistance, corrosion resistance and waterproof.

[0023] As attached Figure 3 As shown, the heat-conducting device 7 consists of a polyurethane insulation layer 11, a mica insulation layer 12, and graphite 13. Its function is to transfer the heat from the heating strip 4 to the slide table 6, the slide plate 1, and the switch rail 5. The side without the polyurethane insulation layer 11 and the mica insulation layer 12 is the surface of the heat-conducting device 7 that contacts the slide plate 1 and the slide table 6, which aims to improve heat conduction efficiency and thermal uniformity. The side with the polyurethane insulation layer 11 and the mica insulation layer 12 is the surface of the heat-conducting device 7 that contacts the air. The graphite 13 in the heat-conducting device 7 is attached to both sides of the slide table 6, the top of the slide plate 1, and the bottom of the switch rail 5, without any interlayer. This structure maximizes heat transfer.

[0024] As attached Figure 4 As shown, the fixing device consists of a metal clip 8, a hexagonal head bolt 9, and a hexagonal head nut 10. Its function is to connect the heat conduction device 7 and the slide table 6 together, so that the slide table is not affected when the heat conduction device 7 is replaced.

[0025] Depending on the installation position of the heating strip 4, the shape of the heat-conducting device 7 provided by this utility model can be changed. The shape of the heat-conducting device 7 can be changed according to the actual situation, and it is not limited in this example.

[0026] The heat-conducting device 7 disclosed in this utility model is not limited to a specific scope of use. It can be installed on the heating strip 4 or other heating devices using a specific fixing device.

[0027] The above describes the preferred embodiment of this utility model. For those skilled in the art, optimization of this embodiment based on the principle of this utility model is also considered to be within the protection scope of this utility model.

Claims

1. A heat-conducting device for a railway turnout snow melting system, characterized in that, The heat-conducting device (7) contains a heat-conducting plate (13), and an insulating layer (12) and a heat-insulating layer (11) are provided on the surface of the heat-conducting plate (13) that is in contact with the air.

2. The heat-conducting device for a railway turnout snow-melting system according to claim 1, characterized in that, The heat-conducting plate (13) is made of graphite.

3. The heat-conducting device for a railway turnout snow-melting system according to claim 1, characterized in that, The insulating layer (12) is made of mica.

4. The heat-conducting device for a railway turnout snow-melting system according to claim 1, characterized in that, The insulation layer (11) is made of polyurethane.

5. A heat-conducting device for a railway turnout snow-melting system according to claim 1, characterized in that, There is a metal clip (8) on the outside of the heat conduction device (7); the metal clip (8) connects the heat conduction device (7) to the slide table (6).

6. A heat-conducting device for a railway turnout snow-melting system according to claim 5, characterized in that, The metal clip (8) is secured by a hexagonal head bolt (9) and a hexagonal head nut (10).

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