阅读说明：本技术 一种轨道板发电装置 (Track slab power generation device ) 是由 闫斌 徐磊 陈伟 娄平 王卫东 曾志平 闫晗 唐进锋 徐庆元 于 2020-07-30 设计创作，主要内容包括：本发明公开了一种轨道板发电装置,包括带有两个热源入口的温差发电组件和铺设在所述轨道板上表面的第一集热片以及铺设在所述轨道板下表面的第二集热片；所述第一集热片通过导热组件与所述温差发电组件的一个热源入口相连接,所述第二集热片通过导热组件与所述温差发电组件的另一个热源入口相连接。本发明的轨道板发电装置结构简单,装置小巧,能够将轨道板热量转化为电能,能量利用效率及转化效率较高,既加强了轨道结构使用耐久性,又合理的利用了自然资源。(The invention discloses a track plate power generation device which comprises a thermoelectric generation assembly with two heat source inlets, a first heat collection sheet paved on the upper surface of a track plate and a second heat collection sheet paved on the lower surface of the track plate, wherein the thermoelectric generation assembly is provided with two heat source inlets; the first heat collecting sheet is connected with one heat source inlet of the thermoelectric generation assembly through a heat conduction assembly, and the second heat collecting sheet is connected with the other heat source inlet of the thermoelectric generation assembly through a heat conduction assembly. The track slab power generation device is simple in structure, small and exquisite in device, capable of converting track slab heat into electric energy, high in energy utilization efficiency and conversion efficiency, capable of enhancing the service durability of the track structure and reasonably utilizing natural resources.)

1. A track plate power generation device, characterized by comprising a thermoelectric generation assembly (3) with two heat source inlets and a first heat collection sheet (1) laid on the upper surface of a track plate (8) and a second heat collection sheet (5) laid on the lower surface of the track plate (8); the first heat collecting sheet (1) is connected with one heat source inlet of the thermoelectric generation assembly (3) through a heat conduction assembly, and the second heat collecting sheet (5) is connected with the other heat source inlet of the thermoelectric generation assembly (3) through a heat conduction assembly.

2. The track plate power generation device according to claim 1, wherein the first heat collecting plate (1) and the second heat collecting plate (5) protrude out of the edge of the track plate (8), and the thermoelectric generation assembly (3) is disposed between the first heat collecting plate (1) and the second heat collecting plate (5).

3. The track plate power generation device according to claim 2, wherein one heat source inlet of the thermoelectric generation element (3) is closely attached to the first heat collecting plate (1) or the second heat collecting plate (5).

4. The track plate power generation device according to claim 1, wherein the first heat collecting sheet (1) and the second heat collecting sheet (5) are aluminum alloy sheets or copper sheets.

5. The track plate power generation device according to claim 1, wherein the heat conduction component is a heat conduction pipe (2), the heat conduction pipe (2) is filled with a heat conduction material, and the heat conduction material is one of graphite, aluminum alloy and organic oil.

6. A track plate power generation device according to any of claims 1 to 5, characterized in that the device is externally covered with a layer of heat insulating insulation (4).

7. The track plate power generation device according to claim 6, wherein the material of the heat insulation layer (4) is one or more of aerogel, polyurethane, phenolic resin and glass fiber cotton.

8. A track plate power generation device according to any one of claims 1 to 5, characterized in that the thermoelectric generation assembly (3) is a thermoelectric generation chip.

9. A track plate power generation device according to any of claims 1 to 5, wherein the device is further coated with an anti-corrosion layer.

10. The track plate power generation device according to claim 9, wherein the material of the anti-corrosion layer is acrylic, polyurethane or epoxy.

Technical Field

The invention relates to the field of railway tracks, in particular to a track slab power generation device.

Background

The thermoelectric power generation is a method for driving power generation by using the temperature difference between cold and heat sources according to three basic theories of a Peltier effect, a Seebeck effect and a Thomson effect, is a technology for directly converting heat energy into electric energy, has a simple structure, can effectively reduce environmental pollution and noise, and keeps strong electric energy. The technology is commonly used for the aspects of industrial waste heat, solar energy, ocean temperature difference energy, automobile exhaust waste heat emission and the like.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide the track slab power generation device which is simple in structure and small in size, can convert track slab heat into electric energy, enhances the service durability of a track structure and reasonably utilizes natural resources.

In order to solve the technical problems, the invention adopts the following technical scheme:

a track plate power generation device comprises a thermoelectric generation assembly with two heat source inlets, a first heat collection sheet paved on the upper surface of a track plate and a second heat collection sheet paved on the lower surface of the track plate; the first heat collecting sheet is connected with one heat source inlet of the thermoelectric generation assembly through a heat conduction assembly, and the second heat collecting sheet is connected with the other heat source inlet of the thermoelectric generation assembly through a heat conduction assembly.

The design idea of the technical scheme is that the inventor researches and discovers that the temperature of a concrete structure in a track in China has great relevance to practice, the surface temperature of the concrete structure is changed violently along with the environmental temperature and time, the internal temperature change of the concrete structure is delayed for a certain time, and the change amplitude is reduced rapidly along with the increase of the depth. The average positive temperature difference of the upper surface and the lower surface of the upper rail of the straight-line railway bridge in China is 17.0 ℃, and the average negative temperature difference is 8.7 ℃; the average positive temperature difference of the upper surface and the lower surface of the track slab is 13.0 ℃, and the average negative temperature difference is 6.4 ℃. The vertical temperature gradient of the track not only influences the stability of the continuous track structure, but also causes repeated warping deformation of the track slab to cause mortar bed crack separation. Based on the phenomenon and the principle, the heat collecting sheets can collect the heat of different temperatures of the upper surface and the lower surface, and then the heat is transmitted to the temperature difference power generation assembly through the heat conduction assembly, the device can generate power by utilizing the temperature difference existing between the upper surface and the lower surface of the track plate on the straight-line railway bridge, the natural resources are reasonably utilized to realize the cyclic utilization of energy, the power generation mode is environment-friendly, the energy consumption can be reduced, and meanwhile, the temperature difference value of the track plate can be reduced or even eliminated by utilizing the temperature difference of the upper surface and the lower surface of the track plate, so that the problems of reduced stability of the track plate, repeated warping deformation and mortar layer crack separation caused by the temperature difference existing between the upper surface and the lower surface are.

As a further improvement of the above technical solution:

the first heat collecting sheet and the second heat collecting sheet extend out of the edge of the track plate, and the thermoelectric generation assembly is arranged between the first heat collecting sheet and the second heat collecting sheet. By the arrangement mode, the power generation device is integrated near the track slab, so that the space occupied by the power generation device is greatly reduced, and the power generation device is convenient to overhaul; meanwhile, through the arrangement mode, the length of the heat conduction pipe connecting the heat collecting plate and the thermoelectric generation assembly is shortest, and the heat loss caused by overlong heat conduction pipe can be reduced, so that the working efficiency of the power generation device is improved, and the setting cost is saved.

One heat source inlet of the thermoelectric generation assembly is tightly attached to the first heat collecting sheet or the second heat collecting sheet. The heat source inlet of the thermoelectric generation assembly is directly contacted with one of the heat collecting sheets, so that the heat loss in the transmission process from the heat collecting sheets to the thermoelectric generation assembly can be reduced to the maximum extent, and the working efficiency of the power generation device is further improved.

The first heat collecting sheet and the second heat collecting sheet are aluminum alloy sheets. The aluminum alloy sheet has good heat conduction performance, so that the aluminum alloy sheet can be selected as the heat collecting sheet to effectively collect and conduct heat from the upper surface and the lower surface of the track plate, thereby improving the energy utilization efficiency and the power generation efficiency of the device.

The heat conduction pipe is filled with a heat conduction material, and the heat conduction material is one of graphite, aluminum alloy and organic oil. Graphite, aluminum alloy or organic oil with good heat conductivity is selected as a filling material in the heat conduction pipe, so that the energy loss of the heat conduction pipe during heat transmission can be reduced, and the efficiency of the power generation device is further improved.

The device is externally covered with a heat insulation layer. Through covering thermal-insulated insulating layer outside the device, can guarantee thermal effective transmission and utilization, prevent the inside energy of device outwards loss to improve power generation facility's energy availability factor, the emergence of the electrically conductive phenomenon of accessible time simultaneously guarantees track and personnel's safety.

The material of the heat insulation layer is one or more of aerogel, polyurethane, phenolic resin and glass fiber cotton. The materials have poor electrical conductivity and thermal conductivity, and can well play a role in heat insulation.

The thermoelectric generation assembly is a TEG thermoelectric generation chip. The TEG chip is simple in structure, small and exquisite in device and capable of reducing the overall occupied volume of the device.

The device is also covered with an anti-corrosion layer. The anti-corrosion layer outside the device can prevent the corrosion of natural factors such as rain and the like to the material, reduce the failure rate of the device and prolong the service life of the device.

The material of the anti-corrosion layer is acrylic acid, polyurethane or epoxy resin.

The thermoelectric generation assembly is connected with energy storage equipment through an electric energy output assembly, and the energy storage equipment is connected with electric equipment.

Compared with the prior art, the invention has the advantages that: the track slab power generation device is simple in structure, small and exquisite in device, capable of converting track slab heat into electric energy, high in energy utilization efficiency and conversion efficiency, capable of enhancing the durability of the track structure and reasonably utilizing natural resources, capable of supplying the generated electric energy to various power utilization facilities around a high-speed rail, free of pollution to the environment and environment-friendly.

Drawings

Fig. 1 is a schematic diagram of a position relationship between a track slab power generation device and a track slab in embodiment 1;

fig. 2 is a schematic cross-sectional view of a track slab power generation device according to example 1 along the direction of line a in fig. 1;

fig. 3 is a schematic cross-sectional view of the track slab power generation device of example 1 along the direction of line b in fig. 1;

fig. 4 is a connection relationship diagram of the track slab power generation device, the energy storage device and the electric device in embodiment 1;

fig. 5 is a schematic structural view of a thermoelectric generation module (TEG thermoelectric generation chip) of embodiment 1.

Illustration of the drawings:

1. a first heat collecting sheet; 2. a heat conducting pipe; 3. a thermoelectric generation assembly; 4. a heat insulating layer; 5. a second heat collecting fin; 6. an energy storage device; 7. an electricity-consuming device; 8. a track plate; 9. a track plate power generation device; 31. a first heat source inlet; 32. a second heat source inlet; 33. an N-type semiconductor; 34. a P-type semiconductor; 35. a positive electrode lead; 36. and a negative electrode lead.

Detailed Description

The invention is described in further detail below with reference to the figures and specific examples.