CN202549556U - Transformer heat pipe radiating device - Google Patents

Abstract

The utility model belongs to the field of transformers and relates to a transformer heat pipe cooling device. It includes a group of heat pipes with cooling fins arranged on the upper part of the transformer box, the evaporation end of the heat pipe is arranged in the transformer box, and the condensation section is arranged outside the transformer box. The utility model has good structural flexibility, and can change the heat pipe according to the setting of the attachment structure on the upper oil-saving tank of the transformer, and realize the heat dissipation function by changing the size and quantity of the heat pipe; In addition, the shape of the heat pipe can change with the conditions of the heat source and the cold source, and the environment adaptability is good.

Description

A transformer heat pipe cooling device

technical field

The utility model belongs to the field of transformers and relates to a transformer heat pipe cooling device.

Background technique

Transformer is an indispensable equipment in power transmission and transformation projects. In order to ensure the normal operation of the transformer, it is necessary to reduce the temperature inside the transformer in time. At present, the commonly used method is to add heat sinks on both sides of the transformer. The heat dissipation effect of the heat sink directly affects Transformer performance and service life. Sometimes in order to improve the heat dissipation effect of the heat sink, fans and the like are often arranged. The rotation of the fan blades is used to form forced convection, thereby improving the heat dissipation effect. However, such a conventional structure requires multiple sets of heat sinks and multiple fans, which will make the transformer bulky and difficult to transport, and the economy of the transformer will also be restricted to a certain extent.

The heat pipe is a high-efficiency heat exchange element that is filled with a working medium in the tube shell and uses the phase change of the medium to absorb and release heat for heat exchange. Because the internal heat transfer mainly depends on the vapor and liquid phase changes of the working liquid, the thermal resistance is very small. , so it has a high thermal conductivity. Compared with silver, copper, aluminum and other metals, heat pipes per unit weight can transfer several orders of magnitude more heat.

Contents of the invention

The utility model combines the heat pipe and the transformer, and designs a transformer heat pipe cooling device with small volume and good heat dissipation performance.

The utility model comprises a group of heat pipes with cooling fins arranged on the upper part of the transformer box, the evaporation end of the heat pipe is arranged in the transformer box, and the condensing section of the heat pipe is arranged outside the transformer box. The production and working process of the heat pipe in the above structure are as follows: the inside of the pipe is pumped into a negative pressure of 1.3×(10 ^-1 -10 ^-4 ) Pa, and then filled with an appropriate amount of liquid working medium, and the liquid-absorbing core close to the inner wall of the pipe is capillary and porous. The material is filled with working medium liquid (such as liquid ammonia, ether, etc.) and then sealed. One end of the heat pipe is the evaporation section (heating section), and the other end is the condensation section (cooling section). The lower end of the heat pipe in the utility model is an evaporation section, and the upper end is a condensation section. When the temperature of the transformer oil rises, the lower end of the heat pipe is heated, and the liquid in the capillary wick evaporates and vaporizes. The steam flows to the upper end under a small pressure difference, and releases heat to condense into a liquid. The liquid then flows back along the porous material by capillary force and gravity. evaporation section. In such a cycle, the heat is transferred from one end of the heat pipe to the other end to realize the heat dissipation of the transformer.

In the above-mentioned structure of the present invention, the heat pipes can be provided with respective heat sinks, or integral heat sinks can be used, and the heat pipes can be connected and fixed with each other by means of the heat sinks.

In addition, the heat pipe in the utility model can be arranged not only on the top of the transformer box, but also on its side wall. And the heat pipe can be vertically or obliquely installed on the box body.

The utility model mainly has the following characteristics:

1. The structure is flexible, and the heat pipe can be changed according to the setting of the accessory structure on the upper fuel tank of the transformer, and the heat dissipation function can be realized by changing the size and quantity of the heat pipe;

2. The heat dissipation effect of the heat pipe radiator is better, and the product size is reduced;

3. The shape of the heat pipe can change with the conditions of the heat source and cold source, and it has good environmental adaptability. the

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment one;

Fig. 2 is a side view of Fig. 1;

Fig. 3 is the side view of implementing two;

Fig. 4 is the side view of implementing three;

Among them, 1. heat pipe, 11. heat sink, 2. transformer box top, 3. transformer side wall.

Detailed ways

Embodiment one:

As shown in Figures 1 and 2, this embodiment includes a group of heat pipes 1, each heat pipe 1 is filled with a liquid working medium, the evaporation end of the heat pipe 1 is set in the transformer box, and is in contact with the parallel transformer oil, and its condensation section is set in the transformer. Outside the box, exposed to the air. Each heat pipe 1 is connected to each other by a group of plate fins 11 . Each heat pipe 1 of this embodiment is arranged on the transformer box top 2, and each heat pipe 1 is perpendicular to the plate surface of the transformer box top 2.

Embodiment two:

As shown in Figure 3, this embodiment includes a group of heat pipes 1, each heat pipe 1 is filled with a liquid working medium, the evaporation end of the heat pipe 1 is set in the transformer box, and is in contact with the parallel transformer oil, and its condensation section is set in the transformer box outside, exposed to air. Each heat pipe 1 is connected to each other by a group of plate fins 11 . Each heat pipe 1 of this embodiment is arranged on the transformer box top 2, and each heat pipe 1 is inclined to form an included angle with the transformer box top 2 board surface.

Embodiment three:

As shown in Figure 4, this embodiment includes a group of heat pipes 1, each heat pipe 1 is filled with a liquid working medium, the evaporation end of the heat pipe 1 is arranged in the transformer box, and is in contact with the parallel transformer oil, and its condensation section is arranged in the transformer box outside, exposed to air. Each heat pipe 1 is connected to each other by a group of plate fins 11 . Each heat pipe 1 in this embodiment is arranged on the side wall 3 of the transformer, and each heat pipe 1 is inclined to form an included angle with the plate surface of the side wall 3 of the transformer.

Claims (5)

1. transformer heat-pipe radiating apparatus, it is characterized in that: it comprises the one group of heat pipe (1) that has fin (11) that is arranged on transformer-cabinet top, and the evaporation ends of heat pipe (1) is arranged in the transformer-cabinet, and it is external that its condensation segment is arranged on transformer tank.

2. transformer heat-pipe radiating apparatus according to claim 1 is characterized in that: each heat pipe (1) interconnects through the fin on it (11).

3. transformer heat-pipe radiating apparatus according to claim 1 and 2 is characterized in that: described heat pipe (1) is installed on the case top or its sidewall of transformer-cabinet.

4. transformer heat-pipe radiating apparatus according to claim 3 is characterized in that: heat pipe (1) vertically or tilt to be installed on the transformer-cabinet.

5. transformer heat-pipe radiating apparatus according to claim 1 and 2 is characterized in that: heat pipe (1) vertically or tilt to be installed on the transformer-cabinet.

Images