JPH0330400A - Cooling device for gas insulation cubicle - Google Patents

Abstract

PURPOSE:To make it possible to cool efficiently an insulating medium without providing a fan in the interior of a cubicle by a method wherein the title device is provided with the cubicle, a heat pipe and a cooling means. CONSTITUTION:When heat is transmitted from an insulating medium subjected to temperature rise by the heat generation of an electrical apparatus 14 to a heat receiving part 171 of a heat pipe 17 provided in the interior of a cubicle 11, a working medium in the pipe 17 is vaporized and the heat is moved to a heat dissipation part 172 on the outside of the cubicle, but the heat is forcedly cooled by a cooling means 20 here and is liquefied to return to a heat receiving part 172. The heat repeats such an operation. Thereby, the heat generated in the interior of the cubicle can be efficiently released to the outside with the interior sealed intact without providing a fan in the interior of the cubicle.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a cooling device for a gas insulated cubicle in which an insulating gas such as SF6 gas is sealed at approximately atmospheric pressure.

(Prior Art) Conventionally, there is a cooling device for a closed structure constructed as shown in FIG. That is, in this device, a box 2 communicating with the interior space is provided on the side surface of a cubicle 1, which is a closed structure, and a heat pipe 3 is provided in parallel to the side surface of the cubicle 1, passing through the box 2. This heat pipe 3 has a heat receiving part 3a inside the box 2 and a heat radiating part 3.
b is located outside the cubicle 1. An internal fan 4 is provided corresponding to the heat receiving section 3a inside the box 2, and an external fan 5 is provided at the heat radiating section 3b outside the cubicle 1.

When the internal air A is heated and the temperature rises due to heat generated by electrical equipment (not shown) inside the cubicle 1, the internal air is guided into the box 2 by the internal fan 4,
After passing through the upper half of the heat receiving part 3a of the heat pipe 3, the direction is changed and the working medium of the heat pipe 3 is evaporated and moved to the heat radiating part 3b by passing through the lower half of the heat receiving part 3a and returning to the inside of the cubicle 1. , in this state, the external fan 5
The external air B is guided to the lower half of the heat dissipation part 3b of the heat pipe 3, and the direction is changed to release the heat to the outside through the upper half of the heat pipe 3, thereby cooling the working medium inside the heat pipe 3 and liquefying it again. By repeating this operation, the cubicle 1 is returned to the heat receiving part 3a.
It is designed to cool the electrical equipment inside.

(Problem to be Solved by the Invention) However, with such a configuration, if SF6 gas is sealed inside the cubicle 1 as an insulating medium, a normal fan cannot be used as is inside the box 2. First, a specially processed fan must be used, which is expensive and economically disadvantageous.

Moreover, providing the fan 4 inside the cubicle 1 means that
Since the power source of the fan 4 must be led out to the outside of the cubicle 1, consideration must be given to sealing the lead-out portion of the power line, which complicates the structure of this portion. Furthermore, if the internal fan 4 breaks down, the SF and gas inside the cubicle 1 will be discharged once, and after the faulty part is repaired, a new SF will be installed.

The gas must be refilled, so the gas must be exhausted,
The drawback is that it requires a lot of time and effort to enclose the capsules.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a cooling device for a gas-insulated cubicle that can efficiently cool an insulating medium without providing a fan inside the cubicle.

[Structure of the Invention] (Means for Solving the Problems) The present invention provides a heat receiving section of a heat pipe having a heat receiving section and a heat dissipating section inside a cubicle that houses an electrical device and encapsulates an insulating medium, and also provides a heat receiving section outside the cubicle. A heat dissipation section is provided, and the heat dissipation section of such a heat pipe is forcibly cooled using a cooling means.

(Function) According to the present invention, when heat is transferred from the insulating medium whose temperature has risen due to heat generation from the electrical equipment to the heat receiving part of the heat pipe provided inside the cubicle, the working medium of the heat pipe is vaporized and It moves to the heat dissipation part of
Here, it is forcibly cooled by the cooling means, liquefied, and returned to the heat receiving section.By repeating this operation, the heat generated inside the cubicle is efficiently released to the outside while remaining in a sealed state. be able to.

(Example) An embodiment of the present invention will be described below with reference to the drawings.

In Figures 1 and 2, 11 is a cubicle;
This cubicle 11 has an open upper part, and a partition plate 12 is provided in this open part 11a. In this case, the partition plate 12 is airtightly provided to the open portion 11a of the cubicle 11 via a packing 13, as shown in FIG.

A circuit breaker 14 is provided inside the cubicle 11 as an electrical device. This breaker 14 is fixed inside the cubicle 11 by support members 15.15, and conductors 16.16 are led out from both ends of the breaker 14. Moreover, SF6 gas is sealed inside the cubicle 11 as an insulating medium.

Inside the cubicle 11 is a heat receiving part 1 of a heat pipe 17.
71 has been established. In this case, two sets of heat receiving parts 171 are arranged using dead spaces along both sides inside the cubicle 11. Then, auxiliary vibes 181 and 181 are communicated with these heat receiving parts 171, and these auxiliary vibes 1
81.181 through the partition plate 12 to the cubicle 11
The heat dissipation part 1 of the heat pipe 17
Connected to 72. In this case, the auxiliary vibrator 181 is
As shown in FIG. 3, it penetrates the partition plate 12 in an airtight manner. Further, the heat dissipation section 172 of the heat pipe 17 is arranged along the upper surface of the partition plate 12 to prevent the overall height dimension from increasing.

A cover 19 is provided on the upper surface of the partition plate 12 so as to cover the heat radiation section 172. This cover 19 has a plurality of external air introduction ports 191 for introducing external air and a plurality of exhaust ports 192 for discharging the introduced external air, and a fan 20 is provided in the external air introduction port 191. This fan 20 is for forcibly introducing outside air into the cover 19.

Next, the operation of the embodiment configured as described above will be explained.

Now, when the breaker 14 and the conductor 16.16 inside the cubicle 11 generate heat due to energization, the SF6 gas indicated by the symbol C in FIG. 2 is heated and rises by 1H degrees. As the SF6 gas C moves in the direction of the arrow shown in the figure, the heat of the SF6 gas C is transferred to the heat receiving part 1 of the heat pipe 17.
71. Due to this heat conduction, the heat pipe 17
The heat receiving section 171 is heated, and as a result of this heating, the internal working medium is vaporized while still emitting heat in the form of latent heat of vaporization.

Then, this vaporized working medium is moved to the heat radiation section 172 through the auxiliary pipe 181.

In this state, when the fan 20 of the external air inlet 191 of the cover 19 is driven, the external air indicated by the reference numeral is forcibly introduced into the cover 19 through the external air inlet 191. Then, the forcedly introduced external air flows into the heat radiation section 172.
The temperature is increased by absorbing more heat, and the discharge port 19 of the cover 19
It is discharged from 2. As a result, the working medium in the heat radiation section 172 is cooled, condensed, and liquefied again, and the auxiliary pipe 181
The heat is returned to the heat receiving section 171 through the heat receiving section 171. Thereafter, by repeating the same operation, the heat of the SF6 gas C whose temperature rises inside the cubicle 11 is forcibly removed by the external air in the heat radiation part 192, and the inside of the cubicle 11 is kept in a sealed state. It will be possible to cool it down.

Therefore, in this way, the SF6 gas can be efficiently cooled without installing a fan inside the cubicle, making it cheaper than the conventional method using a specially processed fan. , economically advantageous. Further, since this eliminates the need for any power wires led out from inside the cubicle, the structure can be simplified without considering the sealing structure of the power wire lead-out portion. Furthermore, it is possible to eliminate all troublesome operations such as discharging gas from inside the cubicle when the internal fan fails and filling in the gas after the failed part is repaired.

It should be noted that the present invention is not limited to the above-mentioned embodiments, but can be implemented with appropriate modifications without changing the gist.

For example, in the embodiment described above, the heat dissipation section 1 of the heat pipe 17
72 is forcibly cooled by air blowing from the fan 19, but it may be forcibly cooled by other cooling means such as cooling water.

[Effects of the Invention] According to the present invention, when heat is transferred from the insulating medium whose temperature has increased due to heat generation from the electric equipment to the heat receiving part of the heat pipe provided inside the cubicle, the working medium of the heat pipe is vaporized, It moves to the heat dissipation area outside the cubicle, but
Here, it is forcibly cooled by the cooling means, liquefied, and returned to the heat receiving section.By repeating this operation, the cubicle can be cooled without the need for a fan inside the cubicle.
The heat generated inside the cubicle can be efficiently released to the outside while remaining in a sealed state.

[Brief explanation of drawings]

Fig. 1 is a sectional view showing an embodiment of the present invention, Fig. 2 and 3 are enlarged views of the Y section in Fig. 2, and Fig. 4 is an example of a conventional cooling device for a gas-insulated cubicle. FIG. 11... Cubicle, 12... Partition plate, 13...
・Packing, 14... Breaker, 16... Conductor, 1
7... Heat pipe, 171... Heat receiving part, 172...
...Heat radiation section, 181...Auxiliary pipe, 19...Cover 20...Fan.

Claims (1)

[Claims] A cubicle that houses electrical equipment and encloses an insulating medium, a heat pipe that has a heat receiving section inside the cubicle and a heat radiating section outside the cubicle, and a heat radiating section of the heat pipe that is installed outside the cubicle. 1. A cooling device for a gas-insulated cubicle, characterized in that it is equipped with a cooling means for cooling the gas-insulated cubicle.