Electric heating anti-freezing device and application thereof

Abstract

The invention relates to the technical field of rail safety protection, in particular to an electric heating anti-freezing device and application thereof, and the electric heating anti-freezing device comprises a metal shell and a combined wire core sleeved with the metal shell; the combined wire core comprises at least one layer of heating tape, a plurality of first mica sheet layers are stacked between the upper end face of the heating tape and the top end face of the inner side of the metal shell, and a plurality of second mica sheet layers are stacked between the lower end face of the heating tape and the bottom end face of the inner side of the metal shell. A plurality of third mica sheet layers are stacked between every two adjacent heating belts, and one end of each heating belt is connected with a leading-out wire. According to the electric heating anti-freezing device, the combined wire core composed of the heating tape and the mica sheet layer is arranged in the wire core containing cavity of the metal shell in a sleeving mode, the combined wire core is tightly pressed and attached to the side close to the plane through the abutting boss, the heat transfer efficiency of the electric heating anti-freezing device is effectively improved, the structure of the electric heating anti-freezing device is simplified, and the cost is reduced. And the production cost is further reduced.

Description

Technical Field

[0001] The invention relates to the technical field of rail safety protection, and in particular to an electric heating antifreeze device and application thereof. Background Art

[0002] Turnouts are an important part of railway tracks and are an indispensable device for railway vehicles to switch from one track to another. They play an indispensable role in railway transportation. In winter, railway turnouts are prone to ice, especially the point rails and the places where the point rails meet the base rails. Once ice forms, the gap between the point rails and the base rails will be too large, thus causing train derailment accidents, which poses a great risk.

[0003] In the prior art, there are two common methods for dealing with ice on railway turnouts: 1. Employees check whether there is ice and snow on the turnouts along the line, and when ice and snow are detected, they manually sweep the snow; 2. The method of using a blowtorch is to use a blowtorch with a small gas tank and burn it with fire to evaporate the water. However, these two methods have the following problems and disadvantages: 1. Employees checking and sweeping snow along the line is a more traditional method, but it requires more people, has low operating efficiency, and is not suitable for situations where the snow melts and then freezes; 2. The method of using a blowtorch is to use a blowtorch with a small gas tank and burn it with fire to evaporate the water, but this method is also less efficient, requires more people, and is heavy. In recent years, people have begun to install electric heating anti-freezing devices on turnout rails to effectively ensure the safe operation of the track. This type of heating device mainly relies on imported electric heating strips, which use a heating wire and magnesium oxide structure, and have problems such as low thermal efficiency, uneven heating, and poor temperature control sensitivity. Summary of the invention

[0004] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the present invention is to provide an electric antifreeze device, which effectively improves the heat transfer efficiency of the electric antifreeze device, simplifies the structure of the electric antifreeze device, and further reduces the production cost by sleeveing ​​a combined wire core composed of a heat-generating belt and a mica sheet layer into a wire core accommodating cavity of a metal shell, and using abutment bosses to press the combined wire core tightly to a side close to the plane.

[0005] Another object of the present invention is to provide an application of an electric antifreeze device. By applying the electric antifreeze device to railways, bridges, houses and other fields to prevent freezing and melt snow, the efficiency of ice and snow removal is improved, and manpower loss and potential risks are greatly reduced.

[0006] The object of the present invention is achieved through the following technical scheme: an electric heating antifreeze device, comprising a metal shell and a combined wire core sleeved in the metal shell; the combined wire core comprises at least one layer of heat-generating belt, a plurality of first mica sheets are stacked between the upper end surface of the heat-generating belt and the inner top end surface of the metal shell, a plurality of second mica sheets are stacked between the lower end surface of the heat-generating belt and the inner bottom end surface of the metal shell, a plurality of third mica sheets are stacked between two adjacent heat-generating belts, and one end of the heat-generating belt is connected to a lead-out wire.

[0007] Preferably, the metal shell is a hollow structure, the hollow cavity of the metal shell is a wire core accommodating cavity, and the combined wire core sleeve is arranged in the wire core accommodating cavity.

[0008] Preferably, one side of the metal shell is configured as a plane.

[0009] Preferably, a groove is provided inwardly on one side of the metal shell.

[0010] Preferably, an inner cavity wall of the wire core accommodating cavity extends toward one side of the plane of the metal shell with an abutment boss, and the abutment boss can press the combined wire core sleeved in the wire core accommodating cavity tightly against the side close to the plane.

[0011] Preferably, a heat-insulating cavity is further provided between the abutting boss and the combined wire core, and the heat-insulating cavity is respectively located on both sides of the abutting boss.

[0012] Preferably, one end or both ends of the combined wire core respectively extend out of the end of the metal shell, and the end of the combined wire core extending out of the metal shell is provided with a welding pad, and the welding pad is connected to the lead wire.

[0013] Preferably, the electric heating antifreeze device also includes a metal handle arranged at the end of the metal shell, and the ends of the metal shell end and the same end of the combined wire core both extend into the metal handle, and the metal handle is filled with a temperature-resistant sealing resin for encapsulating the metal handle, the metal shell end and the combined wire core; the temperature-resistant sealing resin is preferably polyurethane resin or epoxy resin.

[0014] Preferably, the metal handle comprises a first threaded portion, a second threaded portion and a third threaded portion which are threadedly connected in sequence, and a wiring harness sleeve sleeved on the end of the first threaded portion, and a threaded joint is sleeved on the outer surface of the wiring harness sleeve.

[0015] Preferably, the heat-generating belt is made of iron-chromium alloy or nickel-chromium alloy; the metal shell is made of 304 stainless steel; and a nickel oxide layer is provided on the surface of the metal shell.

[0016] The present invention also provides an application of an electric heating antifreeze device, wherein the electric heating antifreeze device is used for antifreeze and snow melting of railways, bridges and houses.

[0017] The beneficial effects of the present invention are as follows: the electric antifreeze device of the present invention effectively improves the heat transfer efficiency of the electric antifreeze device, simplifies the structure of the electric antifreeze device, and further reduces the production cost by sleeveing ​​the combined wire core composed of the heat-generating belt and the mica sheet layer in the wire core accommodating cavity of the metal shell, and using the abutment boss to press the combined wire core tightly to the side close to the plane.

[0018] The invention discloses an application of an electric heating antifreeze device, which is applied to railways, bridges, houses and other fields to prevent freezing and melt snow, thereby improving the efficiency of ice and snow removal and greatly reducing manpower loss and potential risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a stereogram of the present invention; Figure 2 is a three-dimensional schematic diagram of another viewing angle of the present invention; Figure 3 It is an exploded schematic diagram of the present invention; Figure 4 is another exploded schematic diagram of the present invention; Figure 5 yes Figure 4 The enlarged schematic diagram of point A in the middle; Figure 6 It is a schematic diagram of the structure of the metal shell of the present invention; Figure 7 It is a structural schematic diagram of the combined wire core of the present invention; Figure 8 It is another exploded schematic diagram of the present invention.

[0021] The accompanying drawings are marked as: 1-metal shell, 11-wire core accommodating cavity, 12-plane, 13-groove, 14-abutment boss, 15-thermal insulation cavity, 2-combined wire core, 21-heat-generating belt, 22-first mica layer, 23-second mica layer, 24-third mica layer, 25-welding disk, 3-metal handle, 31-first screw connection part, 32-second screw connection part, 33-third screw connection part, 34-wiring sleeve, 35-screw joint. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of those skilled in the art, the following embodiments and attached Figure 1-8The present invention is further explained, and the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present invention. It is understood that the drawings are only provided for reference and explanation, and are not used to limit the present invention. The connection relationship shown in the drawings is only for the convenience of clear description and does not limit the connection method.

[0024] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to another component, or there may be an intermediate component at the same time. Unless otherwise defined, all technical and scientific terms used in this document have the same meaning as those generally understood by technicians in the technical field of the present invention. It should also be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0025] It should also be noted that in the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0026] Embodiment 1

[0027] See Figure 1-8, an electric heating antifreeze device, comprising a metal shell 1 and a combined wire core 2 sleeved in the metal shell 1; the combined wire core 2 comprises a multi-layer heat-generating belt 21, a plurality of first mica sheets 22 are stacked between the upper end surface of the heat-generating belt 21 and the inner top end surface of the metal shell 1, a plurality of second mica sheets 23 are stacked between the lower end surface of the heat-generating belt 21 and the inner bottom end surface of the metal shell 1, a plurality of third mica sheets 24 are stacked between two adjacent heat-generating belts 21, and one end of the heat-generating belt 21 is connected to a lead-out wire; the mica sheets and the sheet-shaped heat-generating belt 21 are stacked and sintered as a whole, which can increase the insulation performance of the metal shell 1 and the combined wire core 2, and the combined wire core 2 with the above structure has sensitive temperature control; the metal shell 1 is a hollow structure, and the hollow cavity of the metal shell 1 is a wire core accommodating cavity 11, and the combined wire core 2 is sleeved in the wire core accommodating cavity 11.

[0028] In the present embodiment, the electric antifreeze device effectively improves the heat transfer efficiency of the electric antifreeze device, simplifies the structure of the electric antifreeze device, and further reduces the production cost by sleeve-mounting the combined wire core 2 composed of the heat-generating belt 21 and the mica sheet layer in the wire core accommodating cavity 11 of the metal shell 1, and uses the abutment boss 14 to press the combined wire core 2 tightly against the side close to the plane 12.

[0029] In this embodiment, one side of the metal shell 1 is set as a plane 12 (i.e., a heating plane). The design of the heating plane can effectively increase the contact area with the track surface and improve the heating efficiency of the track or the heated object. The other side of the metal shell 1 is concavely provided with a groove 13. The first mica layer 22 is located on the side close to the groove 13, and the second mica layer 23 is located on the side close to the plane 12. The thickness of the second mica layer 23 is less than the thickness of the first mica layer 22. The above design is conducive to transmitting the heat generated by the heat-generating belt 21 to the heating plane 12. The thicker first mica layer 22 can effectively isolate the heat from diffusing outward, and play a role in heat insulation. The above design further improves the utilization of the heating efficiency of the combined core 2; at the same time, the design of the groove 13 can also further improve the structural strength of the metal shell 1.

[0030] In this embodiment, an abutment boss 14 extends from the inner cavity wall of the core accommodating cavity 11 toward the plane 12 of the metal shell 1 , and the abutment boss 14 can press the combined core 2 sleeved in the core accommodating cavity 11 tightly against the side close to the plane 12 .

[0031] In the present embodiment, when manufacturing the combined wire core 2, heat-generating belts 21 are firstly sintered on both sides of the third mica sheet 24, one end of the heat-generating belt 21 is connected by riveting or welding, and the other end is connected to the lead wire to form an energized emission circuit, and then several layers of the first mica sheet 22 and the second mica sheet 23 are sintered on the surface of the heat-generating belt 21, and so on. The heat-generating belt 21 can be provided with multiple layers according to the required power, so as to form a multi-layer foldable design to obtain the required power, and the manufactured combined wire core 2 is installed in the metal shell 1, and the combined wire core 2 is pressed and fitted to the side close to the plane 12 by using the abutting boss 14 convexly provided on the inner side of the metal shell 1, so as to increase the contact area between the combined wire core 2 and the heating plane 12, so that the heat emitted by the combined wire core 2 is well transmitted to the heating plane 12 of the metal shell 1, and then the heat is transmitted to the rail or the object to be heated, so as to achieve the purpose of melting ice and resisting freezing so as to make the branch mechanical mechanism operate smoothly.

[0032] In this embodiment, a heat-insulating cavity 15 is further provided between the abutting boss 14 and the combined wire core 2. The heat-insulating cavity 15 is respectively located on both sides of the abutting boss 14, which can effectively isolate the heat generated by the combined wire core 2 from diffusing toward the groove 13, thereby causing the problem of low thermal efficiency.

[0033] In this embodiment, one end or both ends of the combined wire core 2 extend out of the end of the metal shell 1 , and a welding pad 25 is provided at the end of the combined wire core 2 extending out of the metal shell 1 , and the lead wire is connected to the welding pad 25 .

[0034] In this embodiment, the electric heating antifreeze device also includes a metal handle 3 arranged at one end of the metal shell 1, and the ends of the metal shell 1 and the same end of the combined wire core 2 both extend into the metal handle 3, and the metal handle 3 is filled with a heat-resistant sealing resin for encapsulating the metal handle 3, the end of the metal shell 1 and the combined wire core 2; the heat-resistant sealing resin is preferably a polyurethane resin or an epoxy resin. By filling the heat-resistant sealing resin, the end of the combined wire core 2 can be effectively fixed to the metal handle 3, which is convenient for connecting the lead wires of the combined wire core 2 to the power supply, thereby completing the overall production of the heating device.

[0035] In this embodiment, the metal handle 3 includes a first screw-connected portion 31, a second screw-connected portion 32 and a third screw-connected portion 33 which are screwed in sequence, and a wiring harness sleeve 34 which is sleeved on the end of the first screw-connected portion 31, and a screw joint 35 is sleeved on the outer surface of the wiring harness sleeve 34; the metal handle 3 with the above structure is conducive to connecting the combined wire core 2 to the power supply, wherein the design of the wiring harness sleeve 34 can well bundle the lead wires of different layers of the heat-generating belt 21 and connect them to the power supply, thereby simplifying the structure of the device and making it more practical.

[0036] In this embodiment, the heat-generating belt 21 is made of iron-chromium alloy or nickel-chromium alloy. The heat-generating belt 21 made of the above material has a high operating temperature, a long service life, high mechanical strength, and high thermal efficiency. It also saves electricity, is safe to use, and can be bent into various shapes. The metal shell 1 is made of 304 stainless steel. A nickel oxide layer is provided on the surface of the metal shell 1. The nickel oxide layer can increase the corrosion resistance of the metal shell 1 and can serve as a protective barrier to prevent the corrosive medium from directly contacting the base metal, thereby extending the service life of the stainless steel material.

[0037] The invention discloses an application of an electric heating antifreeze device, wherein the electric heating antifreeze device is used for antifreeze and snow melting of railways, bridges and houses.

[0038] Embodiment 2

[0039] The difference between this embodiment and the above-mentioned embodiment 1 is that the combined wire core 2 in this embodiment includes a heat-generating belt 21, a plurality of first mica sheets 22 are stacked between the upper end surface of the heat-generating belt 21 and the inner top end surface of the metal shell 1, a plurality of second mica sheets 23 are stacked between the lower end surface of the heat-generating belt 21 and the inner bottom end surface of the metal shell 1, and one end of the heat-generating belt 21 is connected to the lead-out wire. The rest of the contents of this embodiment are the same as those of embodiment 1 and will not be repeated here.

[0040] Embodiment 3

[0041] The difference between this embodiment and the above-mentioned embodiment 1 is that the electric heating antifreeze device in this embodiment further includes metal handles 3 arranged at both ends of the metal shell 1. The rest of the contents of this embodiment are the same as those of the embodiment 1 and will not be described again.

[0042] Embodiment 4

[0043] The invention discloses an application of an electric heating antifreeze device, wherein the electric heating antifreeze device is used for antifreeze and snow melting of railways.

[0044] Embodiment 5

[0045] An application of an electric heating antifreeze device, wherein the electric heating antifreeze device is used for antifreeze and snow melting of bridges.

[0046] Embodiment 6

[0047] The invention discloses an application of an electric heating antifreeze device, wherein the electric heating antifreeze device is used for preventing freezing and melting snow in houses.

[0048] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention may also be implemented in other ways. Any obvious replacement without departing from the concept of the present invention is within the protection scope of the present invention.

Claims

1. An electric heating antifreeze device, characterized in that: The invention comprises a metal shell and a combined wire core sleeved in the metal shell; the combined wire core comprises at least one heat-generating belt, a plurality of first mica sheets are stacked between the upper end surface of the heat-generating belt and the inner top end surface of the metal shell, a plurality of second mica sheets are stacked between the lower end surface of the heat-generating belt and the inner bottom end surface of the metal shell, a plurality of third mica sheets are stacked between two adjacent heat-generating belts, and one end of the heat-generating belt is connected to a lead-out wire.

2. An electric heating antifreeze device according to claim 1, characterized in that: The metal shell is a hollow structure, the hollow cavity of the metal shell is a wire core accommodating cavity, and the combined wire core sleeve is arranged in the wire core accommodating cavity.

3. An electric heating antifreeze device according to claim 2, characterized in that: One side of the metal shell is configured as a plane.

4. An electric heating antifreeze device according to any one of claims 1 to 3, characterized in that: One side of the metal shell is inwardly provided with a groove.

5. The electric heating antifreeze device according to claim 3, characterized in that: An abutment boss is extended from the inner cavity wall of the wire core accommodating cavity toward one side of the plane of the metal shell, and the abutment boss can press the combined wire core sleeved in the wire core accommodating cavity tightly to fit on the side close to the plane.

6. The electric heating antifreeze device according to claim 5, characterized in that: A heat-insulating cavity is also provided between the abutting boss and the combined wire core, and the heat-insulating cavity is respectively located on both sides of the abutting boss.

7. An electric heating antifreeze device according to any one of claims 1, 2, 3, 5 and 6, characterized in that: One end or both ends of the combined wire core extend out of the end of the metal shell respectively, and the end of the combined wire core extending out of the metal shell is provided with a welding plate, and the welding plate is connected to the lead wire.

8. An electric heating antifreeze device according to any one of claims 1, 2, 3, 5 and 6, characterized in that: The electric heating antifreeze device also includes a metal handle arranged at the end of the metal shell, and the ends of the metal shell end and the same end of the combined wire core both extend into the metal handle. The metal handle is filled with a temperature-resistant sealing resin for encapsulating the metal handle, the metal shell end and the combined wire core.

9. An electric heating antifreeze device according to any one of claims 1, 2, 3, 5 and 6, characterized in that: The material of the heat-generating belt is iron-chromium alloy or nickel-chromium alloy; the surface of the metal shell is provided with an oxide layer.

10. An application of the electric heating antifreeze device as claimed in claim 1, characterized in that: The electric heating antifreeze device is used for antifreeze and snow melting of railways, bridges and houses.

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