JPH0574113U - Gas insulated switchgear - Google Patents

Abstract

(57) [Abstract] [Purpose] Efficiently cool electrical equipment in a gas container to make it small and inexpensive. A gas container 11 accommodating an electric device 14 and containing an insulating gas 12 and a refrigerant 13, a cover plate 16 that hermetically closes an opening 15 of the container 11, and an electronic cooling element 17 attached to the cover plate 16. The cooling fin 18 of the element 17 located inside the container 11, the radiating fin 19 of the element 17 located outside the container 11, and the condensed liquid 22 of the refrigerant 13 condensed below the cooling fin 18 and condensed on the cooling fin 18 Saucer 21
And a pipe 23 connected to the pan 21 to guide the condensed liquid 22 to the overheated portion of the electric device 14.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a gas-insulated switch gear in which an electric device is housed in a gas container and an insulating gas is filled.

[0002]

[Prior Art]

A case where a conventional transformer in a gas container is cooled by utilizing latent heat of vaporization will be described with reference to FIG. In the figure, 1 is a gas container filled with an insulating gas 2 such as SF ₆ gas, 3 is a fluorocarbon-based refrigerant filled in the container 1, 4 is a pressure converter housed in the container 1, 5 is a condenser, 6 , 7 are upper and lower pipes connecting the condenser 5 to the container 1, 8 is a circulation pipe connecting the lower part of the condenser 5 and the top plate 9 of the container 1, and 10 is a pump provided in the circulation pipe 8. Is.

Then, the refrigerant 3 cooled and liquefied by the condenser 5 is dropped by the pump 10 from the top plate 9 of the container 1 to the transformer 4 through the circulation pipe 8 to cool and vaporize the transformer 4. After passing through the upper pipe 6, the condenser 5 liquefies and circulates. The insulating gas 2 flowing into the condenser 5 from the upper pipe 6 returns to the container 1 from the lower pipe 7.

[0004]

[Problems to be solved by the device]

 In the case of the conventional device shown in Fig. 2, the gas container 1 contains a transformer and generates a large amount of heat. However, the gas-insulated switchgear produces a smaller amount of heat than a transformer, and the condensation as shown in Fig. 2 occurs. The use of the container 5 and the pump 10 is uneconomical and causes a problem that the device becomes large. The present invention has been made in consideration of the above points, and an object of the present invention is to provide an inexpensive gas-insulated switchgear that efficiently cools an electric device housed in a gas container, and makes it small.

[0005]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the gas-insulated switchgear of the present invention includes a gas container that houses an electric device and is filled with an insulating gas and a refrigerant, a lid plate that hermetically closes the opening of the container, and a lid plate mounted on the lid plate. The electronic cooling element, the cooling fins of the element located inside the container, the heat radiation fins of the element located outside the container, and the pan that is located below the cooling fin and receives the condensed liquid of the refrigerant condensed on the cooling fin, It is equipped with a pipe connected to the pan to guide the condensed liquid to the overheated part of the electric device.

[0006]

[Action]

 In the gas-insulated switchgear of the present invention configured as described above, the cooling fins located in the gas container are condensed by the electronic cooling element, the condensed liquid is received by the saucer, and the pipe is used to overheat the electric equipment. Since it is led to the internal part, the overheated part can be efficiently cooled locally, and it requires only an electronic cooling element, a cooling fin, a radiation fin, a pan, and a pipe, and is compact and inexpensive.

[0007]

【Example】

One embodiment will be described with reference to FIG. In the figure, 11 is a switchgear gas container filled with an insulating gas 12 such as SF ₆ gas, 13 is a fluorocarbon refrigerant enclosed in the container 11, and 14 is a circuit breaker and a disconnector housed in the container 11. , A transformer, an electric device such as a bushing, 15 is an opening formed in the container 11, 16 is a heat-conductive lid plate that closes the opening 15, and 17 is a Peltier with a cooling surface attached to the outer surface of the lid plate 16. An electronic cooling element having an effect, 18 is a cooling fin of the element 17 located inside the container 11, 19 is a radiating fin mounted outside the container 11 on the radiating surface of the element 17, and 20 is a radiating fin 19. A fan 21 that blows air to cool it is provided below the cooling fins 18 and receives a condensate 22 of the refrigerant 13 condensed and dripped on the cooling fins 18. A reference numeral 23 is an upper end connected to the receiving pan 21 and a lower end is an electric device 14 Overheating A pipe located above the.

The energization of the element 17 lowers the cooling surface and raises the heat radiating surface to cool the cooling fin 18, and the gasified refrigerant 13 is condensed and liquefied in the cooling fin 18. The condensed liquid is collected in the pan 21, guided to the superheated part of the device 14 through the pipe 23, cools the superheated part and is vaporized, and is condensed again by the cooling fins 18, and is repeatedly liquefied and vaporized to form the superheated part. Cooling.

[0009]

[Effect of the device]

 Since the present invention is configured as described above, it has the following effects. In the gas-insulated switchgear of the present invention, the cooling fins 18 located in the gas container 11 condense the refrigerant by the electronic cooling element 17, the condensed liquid 22 is received by the pan 21, and the pipe 23 overheats the electric equipment 14. Since it is a structure which leads to the above, it is possible to efficiently cool the overheated part of the device 14 locally, and moreover, the electronic cooling element 17, the cooling fins 18, the radiation fins 19, the saucer 21, and the pipe 23 are required, and the size is reduced. Therefore, it is not necessary to provide a fan or a refrigerant circulation device in the gas container 11, and the cost can be significantly reduced.

[Brief description of drawings]

FIG. 1 is a cutaway front view of an embodiment of the present invention.

FIG. 2 is a cut front view of a conventional example.

[Explanation of symbols]

 11 Gas Container 12 Insulating Gas 13 Refrigerant 14 Electrical Equipment 15 Opening 16 Cover Plate 17 Thermoelectric Cooling Element 18 Cooling Fin 19 Radiating Fin 21 Saucepan 22 Condensate 23 Pipe

Claims (1)

[Scope of utility model registration request] 1. A gas container for accommodating an electric device and enclosing an insulating gas and a refrigerant, a cover plate hermetically closing an opening of the container, an electronic cooling element mounted on the cover plate, and the inside of the container. A cooling fin of the element located, a heat radiation fin of the element located outside the container, a receiving pan located below the cooling fin for receiving a condensed liquid of the refrigerant condensed on the cooling fin, and connected to the receiving pan A gas insulated switchgear provided with a pipe for guiding the condensed liquid to an overheated portion of the electric device.