JPH07236213A - Gas-filled electric apparatus - Google Patents

Abstract

PURPOSE:To facilitate cooling of insulating gas heated by charged members within a hermetically sealed enclosure. CONSTITUTION:A charged member 3 is disposed in a hermetically sealed enclosure 1 filled with insulating gas 8 which is heated 8a by the charged member 3. A fixing seat 13 projects to the outside of the enclosure 1 while communicating with the interior thereof and a containing vessel 14, opening to the outside of the fixing seat 13 while communicating with the interior of the enclosure 1, is fixed thereto before a thermally conductive element 15 is set in the vessel 14. A thermal conductive member 17 deviating from an allowable insulating field range and having a predetermined area for absorbing heat from the high temperature insulating gas 8a is bonded to the vessel 14 on the projecting side thereof and the gap between the vessel 14 and a heat pipe 15 is filled with a metallic tiller. Since the hermetically sealed enclosure is provided with a cooler 21, the insulating gas can be cooled easily and the size of facility can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas filled electric device.

[0002]

2. Description of the Related Art FIG. 8 is a sectional view showing a conventional gas filled electric device. A similar gas filled electric device is shown in, for example, Japanese Utility Model Publication No. 53-10507. In the figure, 1
Is an independent sealed container, 2 is a sealed container that communicates with the next, 3 is a busbar conductor as a charging member disposed inside the sealed containers 1 and 4, 4 is a connecting member for connecting the busbar conductor 3, and 5 is a busbar The insulating spacer serves as an insulating support member that insulates the conductor 3. Reference numeral 6 denotes an insulating spacer, which has a hole communicating with the adjacent sealed container 2. 7 is the insulating gas filled in the sealed container 2, 8 is the insulating gas filled in the sealed container 1,
Reference numeral 9 is a pipe serving as a circulation passage for the insulating gas 7, 10 is a heat exchange device for cooling the insulating gas 7, and 11 is a circulating device for circulating the insulating gas 7. Reference numeral 12 is an independent cooling system including a pipe 9, a heat exchange device 10, and a circulation device 11.

Next, the operation will be described. The temperature of the insulating gases 7 and 8 rises due to the heat generated by the current of the bus bar conductor 2 which is a charging member. In particular, the connection member 4 is heated by the contact resistance. In order to reduce the temperature rise of the insulating gas 7,
A cooling system 12 is provided between the sealed containers 2, and the circulation device 11
The insulating gas is circulated and cooled by the heat exchange device 10. The insulating gas is sent into the pipe 9 and the sealed container 2 in the directions indicated by 2a and 2b in FIG.

[0004]

Since the conventional gas-filled electric apparatus is constructed as described above, the cooling system 12 must be provided, which requires a large scale of equipment, and the cooling system 12 is provided with a high pressure insulating gas. There were problems such as measures against sealing, measures against wear of sliding parts due to rotation of the circulation device, and maintenance and inspection such as supply of lubricant.

The present invention has been made to solve the above-mentioned problems, and a gas-filled electric device capable of easily cooling an insulating gas which has been heated to a high temperature by heat generated by a charging member in a sealed container. Aim to get.

[0006]

A gas filled electric device according to the present invention is provided with a mounting seat projecting outside the hermetically sealed container at a high temperature portion of insulating gas and communicating with the inside of the hermetically sealed container. Install a storage container that protrudes to the side that communicates with the sealed container, and install a heat-conducting element in this storage container, and have a predetermined area outside the allowable insulating electric field range and absorbing the heat of the high temperature part of the insulating gas. The member was fixed to the protruding side of the storage container.

Further, a storage container is provided outside the hermetically sealed container at a high temperature portion of the insulating gas and outside the permissible insulating electric field range, and a storage container protruding inside the hermetically sealed container is provided. A heat conducting member having a predetermined area outside the insulating electric field range and absorbing heat of the high temperature portion of the insulating gas was fixed to the protruding side of the container.

[0008]

In the gas-filled electric device according to the present invention, the heat-conducting element is mounted in the container, and the heat-conducting member having a predetermined area outside the allowable insulating electric field range and absorbing the heat of the high temperature portion of the insulating gas is housed. Since it is fixed to the protruding side of the container, the insulating gas in the high temperature portion can be easily cooled.

[0009]

【Example】

Example 1. An embodiment of the present invention will be described below with reference to the drawings. 1 is a cross-sectional view of a gas filled electric device, and FIG. 2 is a cross-sectional view of FIG.
2 is a sectional view of the gas-filled electric device viewed from II-II, and FIG.
FIG. 3 is a sectional view of the cooling device viewed from III-III in FIG. In the figure, 1 to 8 are the same as the above conventional device. Reference numeral 8a is a region where the heat generation of the busbar conductor 2 is caused by the convection phenomenon in the high temperature portion of the insulating gas 8. Reference numeral 13 denotes an insulating gas high-temperature portion 8a, which is a mounting seat protruding from the outside of the sealed container 1 and communicates with the inside of the sealed container 1. Reference numeral 14 denotes a storage container that is open to the outside of the mounting seat 13 and projects to the side that communicates with the inside of the sealed container 1. The storage container 14 is hermetically sealed to the mounting seat 13 by welding or the like.

Reference numeral 15 is a heat pipe as a heat conducting element mounted inside the storage container 14, 16 is an allowable insulating electric field range from the busbar conductor 2 or the connecting member 4, and 17 is a storage container outside the allowable insulating electric field range 16. The heat conducting member fixed to the protruding side of 14 has a predetermined area for absorbing the heat of the insulating gas high temperature portion 8a. As the material of the heat conduction member 17, a good heat conduction material such as copper, copper alloy, aluminum, aluminum alloy, stainless steel, ceramics or CFRP (carbon fiber reinforced plastic) is used. 18 is a bolt and nut as a fastening book material for attaching the heat pipe 15 to the storage container 14, 19 is a metal filler filled between the storage container 14 and the heat pipe 15, from the storage container 14 to the heat pipe 15. Improve heat transfer. Reference numeral 20 denotes a cover attached to the heat pipe 15, which is provided to protect the heat pipe 15 from the sun. Reference numeral 21 is a cooling device including a storage container 14, a heat pipe 15, and a metal filler 19. As the metal filler 19, powder of copper, aluminum or the like, particles or fine wires are used.

In the gas filled electric device constructed as described above, the heat conducting member 17 having a predetermined heat conducting area is provided.
However, it absorbs the heat of the insulating gas high temperature part 8a and stores this heat in a container.
14, transmitted to the heat pipe 15 via the metal filling member 19. The heat pipe 15 is a metal pipe in which the inside of the metal pipe is evacuated and then filled with a working fluid, and a wick may be provided inside the pipe to improve the circulation of the working fluid. The working fluid removes latent heat of vaporization by heat input and becomes vapor to move to the heat radiating portion. This vapor is cooled in the heat radiating section to release latent heat of condensation to become a liquid, and further returns to the heat input section by the capillary force or gravity of the wick. This evaporation → migration → condensation →
The transfer cycle is continuously performed, and the insulating gas 8 can be cooled by efficiently transmitting heat from the high temperature side to the low temperature side.

The heat conducting member 17 not only absorbs and transfers the heat of the insulating gas high temperature portion 8a, but also has a role of an electric field shield that relaxes the electric field at the attachment portion between the hermetically sealed container 1 and the attachment seat 13. . Further, when it becomes necessary to replace the heat pipe 15, the tightening member 18 can be removed to replace the heat pipe 15 without replacing the insulating gas 8.

Example 2. 4 and 5 show another embodiment of the present invention. FIG. 4 is a sectional view of the gas filled electric device, and FIG. 5 is a sectional view of the cooling device used in FIG. In the figure, 1
Nos. 20 to 20 are the same as those in the above-described first embodiment, and therefore the description thereof will be omitted.
22 is a hermetic container, 23 is a cable bushing that is disposed inside the hermetic container 22 and has one end connected to a cable, 24 is a cable side terminal rod connected to the cable bushing 23, and 25 is one end of the cable side terminal rod 24. A connecting member in which the other end is connected to the busbar conductor 3, 26 is an electric field relaxation shield such as the connecting member 25, 27 is an insulating gas filled in the sealed container 22, 27a
Is a region where the heat generation of the busbar conductor 3, which is a charging member, the cable-side terminal rod 24, and the connecting member 25 at the high temperature portion of the insulating gas 27 is caused by the convection phenomenon. 28 is a range of allowable insulating electric field from the electric field shield 26.

Reference numeral 29 denotes an insulating gas high temperature portion 27a, and a storage container attached to the sealed container 22 outside the allowable insulating electric field range 28,
It opens to the outside of the sealed container 22 and projects to the inside of the sealed container 22. The storage container 29 is hermetically sealed to the sealed container 22 by welding or the like. A heat conducting member 30 is fixed to the protruding side of the storage container 29 outside the permissible insulating electric field range 30 and has a predetermined area for absorbing the heat of the insulating gas high temperature portion 27a. 31 is a heat pipe 15, a metal filler 19, a storage container 29 and a heat conducting member 30.
Is a cooling device. FIG. 6 is a cross-sectional view of a cooling device showing another embodiment, in which 32 is a storage container, and the storage container 29 of FIG.
(The mounting method has a flange structure). FIG. 7 is a sectional view of a cooling device showing another embodiment, and 33 is a heat radiation fin provided on the heat radiation side of the heat pipe 15.

Example 3. In the second embodiment, as shown in FIG. 4, the cooling device 31 is provided on the side surface of the sealed container 22, but the cooling device 21 shown in FIG. 3 may be provided above the sealed container 22. The same effect as 2 is achieved.

[0016]

As described above, according to the present invention, the accommodating container which is opened to the outside of the hermetically sealed container and protrudes inward is provided at the high temperature portion of the insulating gas generated by the charging member, and the heat conducting element is provided inside the accommodating container. Since the heat conduction member having a predetermined area for absorbing the heat of the high temperature portion of the insulating gas is fixed to the protruding side of the storage container, the insulating gas can be easily cooled and the equipment can be downsized.

[Brief description of drawings]

FIG. 1 is a sectional view of a gas filled electric device according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of the gas filled electric device viewed from II-II in FIG.

3 is a cross-sectional view of the cooling device viewed from III-III in FIG.

FIG. 4 is a cross-sectional view of a gas filled electric device showing a second embodiment of the present invention.

FIG. 5 is a sectional view of a cooling device used in Embodiment 2 of the present invention.

FIG. 6 is a cross-sectional view of a cooling device used in Embodiment 2 of the present invention.

FIG. 7 is a sectional view of a cooling device used in Embodiment 2 of the present invention.

FIG. 8 is a cross-sectional view of a conventional gas filled electric device.

[Explanation of symbols]

 1 Sealed container 3 Charging member 8 Insulating gas 8a Insulating gas high temperature part 13 Mounting seat 14 Storage container 15 Thermal conductive element 16 Allowable insulating electric field range 17 Thermal conductive member 22 Sealed container 27 Insulating gas 27a Insulating gas high temperature part 28 Allowable insulating electric field range 29 Storage container 30 Heat conduction member

Front page continuation (72) Inventor Naoaki Takeharu 3-3-22 Nakanoshima, Kita-ku, Osaka, Kansai Electric Power Co., Inc. (72) Inventor Yoshihiko Nakagoe 2-5 Marunouchi, Takamatsu, Kagawa Shikoku Electric Power Company (72) Inventor Yoshinori Makino 6-15-1, Ginza, Chuo-ku, Tokyo Power source development Co., Ltd. (72) Inventor Shoichi Doi 8-1-1 Tsukaguchihonmachi, Amagasaki City Mitsubishi Electric Corporation Itami Works ( 72) Inventor Ryuichiro Arai 8-1-1 Tsukaguchi Honcho, Amagasaki City Mitsubishi Electric Co., Ltd. Itami Works (72) Inventor Hiroshi Takeuchi 8-1-1 Tsukaguchi Honmachi, Amagasaki City Mitsubishi Electric Co., Ltd. Itami Works

Claims (2)

[Claims] 1. A hermetically sealed container having an interior filled with an insulating gas, a charging member disposed in the hermetically sealed container, and a high temperature portion of the insulating gas generated by the charging member, which protrudes out of the hermetically sealed space and is hermetically sealed. A mounting seat that communicates with the inside of the container, a storage container that opens to the outside of the mounting seat and projects toward the side that communicates with the sealed container, a heat conduction element mounted within the storage container, and is fixed to the projecting side of the storage container. A gas-filled electric device comprising: a heat conducting member having a predetermined area outside the allowable insulating electric field range and absorbing heat of the high temperature portion of the insulating gas. 2. A hermetically sealed container having an insulating gas filled therein, a charging member disposed in the hermetically sealed container, the hermetically sealed part at a high temperature portion of the insulating gas heated by the charging member, and outside the allowable insulating electric field range. A storage container that is open to the outside of the container and protrudes to the inner side of the sealed container, a heat-conducting element that is mounted inside the storage container, is fixed to the protruding side of the storage container, is outside the allowable insulating electric field range, and is of the insulating gas. A heat-conducting member having a predetermined area for absorbing heat of a high temperature portion, the gas-filled electric device.