Rail locomotive heat dissipation device

Abstract

The utility model discloses a rail locomotive heat dissipation device which comprises a power module installation substrate, the power module installation substrate is fixedly connected with a heat dissipation plate in a welded mode, a liquid storage channel is formed in the heat dissipation plate, and the liquid storage channel is filled with heat conduction liquid with a low boiling point. The top of the heat dissipation plate is fixedly connected with a plurality of liquid guide pipes which are arranged obliquely upwards, the bottom end of each liquid guide pipe is communicated with the top of the liquid storage channel, the upper end of each liquid guide pipe is fixedly connected with a condensation pipe, the bottom end of each condensation pipe is communicated with the corresponding liquid guide pipe, and the upper end of each condensation pipe is a closed device. According to the utility model, through mutual cooperation of the condenser pipe, the power module installation substrate, the liquid storage channel, the liquid guide pipe, the heat dissipation plate and other components, heat on the power module installation substrate can be rapidly absorbed and converted, the heat dissipation efficiency of the power module installation substrate is greatly improved, the manufacturing cost is far lower than that of a water-cooling heat dissipation product, and the heat dissipation efficiency is greatly improved. The popularization is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of radiators, in particular to a heat dissipation device for a rail locomotive. Background Art

[0002] During the operation of a rail locomotive, the power electronic power modules used in the onboard traction power supply and auxiliary power supply will generate a lot of heat due to operation, so they need to be cooled. At present, the heat dissipation methods adopted internationally mainly include air cooling, water cooling and heat pipe cooling. Among them, heat dissipation using heat pipe radiators has the advantages of high thermal efficiency, good cooling effect, simple structure, no pollution, and using the running wind of the rail locomotive for cooling, saving energy, etc. Therefore, heat pipe cooling technology is increasingly widely used in the heat dissipation of power modules of the main traction power supply and auxiliary power supply of rail locomotives.

[0003] The air cooling of rail vehicles mainly adopts extruded profiles, which are made of copper and aluminum. However, with the increase of the power of the power modules of rail vehicle power electronics, the heat dissipation capacity of extruded profiles can no longer meet the heat dissipation requirements of power devices. Although the traditional water cooling method can meet the heat dissipation requirements of power modules, its complex structure and expensive daily maintenance costs have led to high prices for water cooling products. Utility Model Content

[0004] The utility model provides a rail locomotive heat dissipation device to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A heat dissipation device for a railway locomotive comprises a power module mounting substrate, the power module mounting substrate is welded and fixedly connected to a heat sink, a liquid storage channel is provided inside the heat sink, the liquid storage channel is filled with a low-boiling-point heat-conducting liquid, a plurality of liquid guide tubes arranged obliquely upward are fixedly connected to the top of the heat sink, the bottom end of each of the liquid guide tubes is connected to the top of the liquid storage channel, a condenser is fixedly connected to the upper end of each of the liquid guide tubes, the bottom end of the condenser tubes is connected to the liquid guide tubes, and the upper end of the condenser tubes is a closed device.

[0007] As a further improvement of the present technical solution: the liquid storage channel is arranged in a continuous S shape.

[0008] As a further improvement of the technical solution: the condenser is arranged in a spiral tube shape.

[0009] As a further improvement of the technical solution: the heat sink, liquid guide tube and condenser are all made of copper.

[0010] As a further improvement of the technical solution: a plurality of heat dissipation fins are provided on the side wall of the heat dissipation plate.

[0011] As a further improvement of the technical solution: the thermal conduction fluid is anhydrous ethanol.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The device is reasonably designed. By arranging the condenser, power module mounting substrate, liquid storage channel, liquid guide tube, heat sink and other components to cooperate with each other, it can quickly absorb and convert the heat on the power module mounting substrate, greatly improving the heat dissipation efficiency of the power module mounting substrate. At the same time, its production cost is much lower than that of water-cooled heat dissipation products, which is easy to promote.

[0014] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiment of the utility model with the accompanying drawings. The specific implementation method of the utility model is given in detail by the following embodiments and their drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0016] Figure 1 This is a schematic diagram of the front cross-sectional structure of a rail locomotive heat dissipation device proposed by the utility model;

[0017] Figure 2 This is a schematic diagram of a top-view cross-sectional structure of a rail locomotive heat dissipation device proposed by the utility model;

[0018] Figure 3 It is a schematic diagram of the side cross-sectional structure of the heat dissipation plate in the utility model.

[0019] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0020] 1. Condenser; 2. Liquid guide tube; 3. Power module mounting base plate; 4. Liquid storage channel; 5. Heat sink; 6. Heat sink fins. DETAILED DESCRIPTION

[0021] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention. The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. It should be noted that the accompanying drawings are all in a very simplified form and are not in precise proportions, and are only used to facilitate and clearly assist in explaining the purpose of the embodiments of the present invention.

[0022] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0024] See also Figures 1 to 3 In an embodiment of the utility model, a heat dissipation device for a rail vehicle includes a power module mounting substrate 3, a heat dissipation plate 5 is welded and fixedly connected to the power module mounting substrate 3, and a plurality of heat dissipation fins 6 are arranged on the side wall of the heat dissipation plate 5;

[0025] A liquid storage channel 4 is provided inside the heat sink 5, and the liquid storage channel 4 is arranged in a continuous S shape. The liquid storage channel 4 is filled with a low-boiling-point anhydrous ethanol thermal liquid. A plurality of liquid guide tubes 2 arranged obliquely upward are fixedly connected to the top of the heat sink 5, and the bottom end of each liquid guide tube 2 is connected to the top of the liquid storage channel 4. A condenser 1 is fixedly connected to the upper end of each liquid guide tube 2. The condenser 1 is arranged in a spiral tube shape, and the bottom end of the condenser 1 is connected to the liquid guide tube 2. The upper end of the condenser 1 is a closed device. The heat sink 5, the liquid guide tube 2, and the condenser 1 are all made of copper material with high thermal conductivity.

[0026] The working principle of the utility model is:

[0027] The heat generated by the power module mounting substrate 3 can be absorbed by the heat sink 5 and transferred to the anhydrous ethanol in the liquid storage channel 4. After absorbing heat, the low-boiling point anhydrous ethanol can rise in a gaseous state along the liquid guide tube 2 at the top of the liquid storage channel 4 until it enters the condenser 1. Because the condenser 1 is connected to the outside air, the temperature of the condenser 1 is relatively low. When the gaseous anhydrous ethanol is condensed by the condenser 1 with a lower temperature, it can flow back into the liquid storage channel 4 along the liquid guide tube 2 in a liquid state. Then, the heat generated by the power module mounting substrate 3 can be continuously absorbed and converted through the gas-liquid conversion of anhydrous ethanol. At the same time, the multiple heat dissipation fins 6 on the side wall of the heat sink 5 can further improve the heat dissipation efficiency of the heat sink 5, thereby achieving efficient heat dissipation of the power module mounting substrate 3.

[0028] The above description is only a preferred embodiment of the utility model and does not impose any form of limitation on the utility model. Any ordinary technician in the industry can smoothly implement the utility model as shown in the drawings of the specification and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the protection scope of the technical solution of the utility model.

Claims

1. A rail vehicle heat dissipation device, comprising a power module mounting substrate (3), characterized in that: The power module mounting substrate (3) is welded and fixedly connected to a heat sink (5), the heat sink (5) is provided with a liquid storage channel (4), the liquid storage channel (4) is filled with a low-boiling-point heat transfer liquid, the top of the heat sink (5) is fixedly connected to a plurality of liquid guide tubes (2) arranged obliquely upward, the bottom end of each of the liquid guide tubes (2) is connected to the top of the liquid storage channel (4), the upper end of each of the liquid guide tubes (2) is fixedly connected to a condenser (1), the bottom end of the condenser (1) is connected to the liquid guide tube (2), and the upper end of the condenser (1) is a closed device.

2. A rail vehicle heat dissipation device according to claim 1, characterized in that: The liquid storage channel (4) is arranged in a continuous S shape.

3. A rail vehicle heat dissipation device according to claim 2, characterized in that: The condenser tube (1) is arranged in a spiral tube shape.

4. A rail vehicle heat dissipation device according to claim 3, characterized in that: The heat sink (5), the liquid guide tube (2) and the condenser tube (1) are all made of copper.

5. A rail vehicle heat dissipation device according to claim 4, characterized in that: A plurality of heat dissipation fins (6) are provided on the side wall of the heat dissipation plate (5).

6. A rail vehicle heat dissipation device according to claim 1, characterized in that: The heat transfer fluid is anhydrous ethanol.

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