Traction transformer heat dissipation device

Abstract

The utility model discloses a traction transformer radiating device which comprises an oil tank and a heat exchanger, the heat exchanger comprises a heat exchange tube, radiating fins and a radiating fan, and the heat exchange tube is communicated with the oil tank through an oil pump; the cooling fins are arranged on the outer side of the coiled pipe at intervals, the cooling fins are parallel to the advancing direction of the train, and the cooling fan is arranged on one side of the cooling fins; a plurality of heat pipes are arranged between the cooling fins in a penetrating mode, evaporation sections of the heat pipes are located between the cooling fins, and condensation sections of the heat pipes extend outwards and exceed the edge of the oil tank. The heat pipes extending out of the edge of the oil tank are inserted into the cooling fins of the radiator in a penetrating mode, when a train travels, heat of the cooling fins is transferred to evaporation sections of the heat pipes through the heat pipes, and the heat pipes are cooled through traveling air; when the train stops, the cooling fan is used for directly dissipating heat of the cooling fins, noise generated when the cooling device operates is reduced, energy loss generated when the cooling fan operates is reduced, and the cooling effect of the traction transformer is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of traction transformer technology, and in particular to a heat dissipation device for traction transformers. Background Technology

[0002] Traction transformers are used to convert the high-voltage electricity from the overhead contact line into various low-voltage electricity required by the traction and auxiliary systems. They are the core components of the train traction system and are crucial to the safe, stable, and reliable operation of the train.

[0003] Existing rail train traction transformers typically employ forced ventilation cooling with cooling fans, which suffers from high noise levels and high power consumption. Patent application CN 117476316A discloses a traction transformer that reduces noise by placing a cooling mechanism on the side of the oil tank and utilizing the airflow generated by the train's operation to cool the cooling oil flowing within the mechanism. However, when the train stops to pick up or drop off passengers, the vehicle is stationary, and the traction transformer cannot be cooled by the airflow, potentially causing damage.

[0004] Based on the above-mentioned technical problems, this application proposes a heat dissipation device for traction transformers. Utility Model Content

[0005] The purpose of this utility model is to provide a heat dissipation device for traction transformers to solve the technical problems mentioned in the background art. This purpose is achieved through the following technical solution:

[0006] A traction transformer cooling device includes an oil tank, an oil pump, and a heat exchanger. The oil tank has an oil inlet and an oil outlet. The heat exchanger includes heat exchange tubes, heat sinks, and a cooling fan. The heat exchange tubes are serpentine tubes, with one end connected to the oil outlet and the other end connected to the oil inlet via the oil pump. Several heat sinks are spaced apart on the outside of the serpentine tubes, parallel to the direction of train travel. The cooling fan is located on one side of the heat sinks. Multiple heat pipes are inserted between the heat sinks, with the evaporation section of the heat pipes located between the heat sinks and the condensation section of the heat pipes extending outward beyond the edge of the oil tank.

[0007] Furthermore, the condenser section of the heat pipe is provided with multiple fins at intervals.

[0008] Furthermore, the oil inlet is located at the bottom of the side of the oil tank, and the oil outlet is located at the top of the side of the oil tank.

[0009] Furthermore, there are two sets of radiators, each connected to the oil tank via two oil pumps. The two sets of radiators are arranged side by side and tilted to the adjacent side so that the condensing section of the heat pipe is higher than the evaporating section.

[0010] The technical solutions provided in this application have at least the following technical effects or advantages:

[0011] By inserting heat pipes that extend from the edge of the oil tank through the radiator fins, the heat from the fins is transferred to the evaporation section of the heat pipes when the train is moving, and the heat pipes are cooled by the running air. When the train is stopped, the cooling fan is used to cool the fins directly. This reduces the noise of the cooling device during operation, reduces the energy consumption of the cooling fan, and ensures the cooling effect of the traction transformer. Attached Figure Description

[0012] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0013] Figure 1 This is a front-view perspective view of an embodiment of this application;

[0014] Figure 2 This is a rear-view perspective view of an embodiment of this application.

[0015] The following are labels in the attached diagram: 1. Oil tank; 11. Oil inlet; 12. Oil outlet; 2. Oil pump; 3. Heat exchanger; 31. Heat exchange tube; 32. Heat sink; 33. Cooling fan; 4. Heat pipe; 41. Fin. Detailed Implementation

[0016] To better understand the above technical solutions, the following detailed description, in conjunction with the accompanying drawings and specific embodiments, will illustrate the technical solutions. Obviously, the described embodiments are merely some embodiments of this utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0017] like Figure 1 , Figure 2The diagram illustrates a traction transformer cooling device, comprising an oil tank 1, an oil pump 2, a heat exchanger 3, and heat pipes 4. The oil tank 1 is a rectangular shell welded from stainless steel. An oil inlet 11 and an oil outlet 12 are located on the side of the oil tank 1 facing the direction of train travel. The oil inlet 11 is located at the bottom of the front side of the oil tank 1, and the oil outlet 12 is located at the top of the front side of the oil tank 1. There are two pairs of oil inlets 11 and two pairs of oil outlets 12, symmetrically distributed on both sides of the front side of the oil tank 1. When the insulating oil is heated, it rises to the surface; the location of the oil outlet 12 at the top of the side of the oil tank 1 allows for timely discharge of the hot oil.

[0018] like Figure 1 , Figure 2 As shown, there are two heat exchangers 3, each including a heat exchange tube 31, a heat sink 32, and a cooling fan 33. The heat exchange tubes 31 are serpentine tubes, and the upper ends of the two heat exchange tubes 31 are connected to two oil outlets 12 via flanges, while the lower ends of the two heat exchange tubes 31 are connected to two oil inlets 11 via two oil pumps 2. Installing two heat exchangers 3 can improve the flow of insulating oil in the oil tank 1 and avoid dead zones that could cause localized overheating of the transformer.

[0019] Several heat sinks 32 are welded at equal intervals to the outside of the serpentine tube, with the heat sinks 32 parallel to the train's direction of travel. A cooling fan 33 is installed on the side of the heat sinks 32 closest to the train's direction of travel. Multiple heat pipes 4 are threaded between the heat sinks 32. The evaporation section of the heat pipes 4 is located between the heat sinks 32, and the condensation section of the heat pipes 4 extends outwards and beyond the edge of the fuel tank 1, allowing the running air to cool the condensation section of the heat pipes 4 during train operation. To improve the heat dissipation efficiency of the condensation section of the heat pipes 4, multiple fins 41 are also welded at equal intervals to the condensation section of the heat pipes 4. Preferably, the two sets of radiators 3 are tilted to adjacent sides, so that the condensation section of the heat pipes 4 is higher than the evaporation section, facilitating the return flow of condensate in the heat pipes 4.

[0020] The working principle of this application embodiment is as follows:

[0021] When the train is moving, the radiator's cooling fan is off. The heat from the heat sink is transferred to the evaporation section of the heat pipe through the heat pipe, and the traveling airflow dissipates heat from the heat pipe and heat sink, increasing the heat dissipation area and improving the heat dissipation efficiency.

[0022] When the train stops, the cooling fan is activated to dissipate heat from the heat sink, thereby reducing the noise and energy consumption of the cooling fan during operation and ensuring the cooling effect of the traction transformer when the train is stopped and there is no running air.

[0023] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0024] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A traction transformer heat dissipation device, characterized in that, The system includes an oil tank, an oil pump, and a heat exchanger. The oil tank has an oil inlet and an oil outlet. The heat exchanger includes heat exchange tubes, heat sinks, and a cooling fan. The heat exchange tubes are serpentine tubes, with one end connected to the oil outlet and the other end connected to the oil inlet via the oil pump. A plurality of heat sinks are spaced apart on the outside of the serpentine tubes, parallel to the direction of train travel. The cooling fan is located on one side of the heat sinks. Multiple heat pipes are threaded between the heat sinks, with the evaporation section of each heat pipe located between the heat sinks and the condensation section of each heat pipe extending outward beyond the edge of the oil tank.

2. The traction transformer heat dissipation device according to claim 1, characterized in that, The condenser section of the heat pipe is provided with multiple fins at intervals.

3. The traction transformer heat dissipation device according to claim 1, characterized in that, The oil inlet is located at the bottom of the side of the oil tank, and the oil outlet is located at the top of the side of the oil tank.

4. A traction transformer heat dissipation device according to claim 1, characterized in that, The heat exchanger consists of two sets, each connected to the oil tank via two oil pumps. The two sets of heat exchangers are arranged side by side and tilted to the adjacent side, so that the condensing section of the heat pipe is higher than the evaporating section.

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