JPH0574112U - Gas insulated switchgear - Google Patents

Abstract

(57) [Abstract] [Purpose] Efficient cooling without providing a fan in the gas container. A gas container 1 which houses an electric device and which is filled with an insulating gas 2, openings 12, 13 formed on the back and top surfaces of the gas container 1, and corrugated plates in which both openings 12, 13 are hermetically closed. 14, 15 and both corrugated boards 14,
A back plate 18 and a ceiling plate 20 provided outside the space 15 with spaces 19 and 21 provided therein, heat insulating materials 22 and 23 attached to the inner surfaces of the back plate 18 and the ceiling plate 20, and a part of the space 21. And the provided fan 26.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a gas-insulated switchgear that houses an electric device and that is filled with an insulating gas.

[0002]

[Prior Art]

A conventional indoor gas-insulated switchgear 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 front plate of the gas container 1, and the front plate 3 has a busbar bushing 4, a disconnecting switch 5, a circuit breaker 6, and a cable bushing. 7 are attached and they are connected by a conductor 8. An opening / closing door 9 has several switch gears arranged in a row and each bus bar bushing 4 is connected and used. For outdoor use, a ceiling plate is installed to prevent the effects of solar radiation.

[0003]

[Problems to be solved by the device]

 In the conventional switchgear, there is no particular problem when the main circuit current is small, but when the main circuit current is large, the heat generation amount of each device and the conductor is increased, which causes a severe temperature condition. Since an insulating gas is enclosed, it is not possible to provide a fan inside the container like an air-insulated switchgear.

Further, in the case of outdoor use, there is a problem that an increase in the main circuit current and the effect of solar radiation are synergistic, and the condition becomes more severe. The present invention has been made in view of the above points, and an object of the present invention is to provide a gas-insulated switchgear capable of efficiently cooling without providing a fan in a gas container.

[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 accommodating an electric device and enclosing an insulating gas, an opening formed on the back and top surfaces of the gas container, and both openings. An airtightly closed corrugated board, a back board and a ceiling board provided with a space outside both corrugated boards, a heat insulating material attached to the inner surfaces of the back board and the ceiling board, and a part of the space. It is provided with a fan provided.

[0006]

[Action]

 In the gas-insulated switchgear of the present invention configured as described above, the corrugated plates block the openings formed in the back and top surfaces of the gas container, and a space is opened outside of both corrugated plates to form the back plate and Since the ceiling board is provided, a duct is formed outside both corrugated boards, and the fans forcibly cool both corrugated boards, and the heat generated from the electric devices and conductors in the gas container is released to the outside. Moreover, even when installed outdoors, the effect of solar radiation can be prevented by the heat insulating material attached to the inner surface of the back plate and ceiling plate.

[0007]

【Example】

 One embodiment will be described with reference to FIGS. 1 and 2. In these figures, the same symbols as those in FIG. 3 indicate the same or corresponding ones. Reference numerals 10 and 11 denote rear and top flanges attached to the rear and top surfaces of the gas container 1, and 12 and 13 denote rear and top openings formed by the rear flange 10 and the top flange 11, 14 and 15, respectively. Is a rear corrugated plate and a top corrugated plate, which are fixed to frame-shaped mounting plates 16 and 17, respectively, and both mounting plates 16 and 17 are mounted to both flanges 10 and 11, respectively, and both openings 12 and 13 are It is hermetically closed.

Reference numeral 18 denotes a back plate provided outside the rear corrugated board 14 with a space 19 provided therein, and 20 denotes a ceiling board provided outside the top corrugated board 15 provided with a space 21. The upper end portion of is connected to the ceiling plate 20, and both spaces 19 and 21 communicate with each other. Reference numerals 22 and 23 denote heat insulating materials attached to the inner surfaces of the back plate 18 and the ceiling plate 20, respectively.

Reference numeral 24 denotes an air inlet formed at the lower end of the rear plate 18, 25 an outlet at the lower front end of the ceiling plate 20, 26 a fan provided at the outlet 25, and 27 a rear plate 18. Vents 28 formed at the upper end portion are covers provided on the vents 27, and normally the cover 28 closes the vents 27.

Then, the air flows from the inflow port 24 into the space 19 by driving the fan 26, air-cools the back corrugated plate 14, and then flows into the space 21 to air-cool the top corrugated plate 15 and the outflow port. The heat emitted from the gas container 25 and generated in the gas container 1 is released to the outside through the corrugated plates 14 and 15, and the heat generated by solar radiation is blocked by the heat insulating materials 22 and 23.

Next, when the temperature sensor provided in the gas container 1 has a temperature equal to or lower than a predetermined temperature, driving of the fan 26 is stopped by the detection signal, the cover 28 is opened electromechanically, and the fan 28 is opened from the inlet 24. The atmosphere is exhausted from the vent 27 and the rear corrugated plate 14 is air-cooled by natural convection.

[0012]

[Effect of the device]

 Since the present invention is configured as described above, it has the following effects. Corrugated plates 14 and 15 close the openings 12 and 13 formed on the back and top surfaces of the gas container 1, and spaces 19 and 21 are opened outside the corrugated plates 14 and 15 to form a back plate 18 and a ceiling plate 20. Since the corrugated plates 14 and 15 are provided with ducts, the corrugated plates 14 and 15 can be forcibly cooled by the fan 26 provided in the space 21. The heat generated from the electric devices and conductors can be efficiently dissipated to the outside without providing a fan in the gas container 1, and even when installed outdoors, the inner surfaces of the back plate 18 and the ceiling plate 20 are insulated. Since the materials 22 and 23 are attached, the influence of solar radiation can be prevented.

[Brief description of drawings]

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

FIG. 2 is a plan view of a part of FIG.

FIG. 3 is a cut side view of a conventional example.

[Explanation of symbols]

 1 Gas Container 2 Insulating Gas 12,13 Opening 14,15 Corrugated Plate 18 Back Plate 19,21 Space 20 Ceiling Plate 22,23 Insulation Material 26 Juan

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location H02B 1/12 A

Claims (1)

[Scope of utility model registration request] 1. A gas container for accommodating an electric device and containing an insulating gas, openings formed in the back and top surfaces of the gas container, corrugated plates that hermetically close the openings, and corrugated plates. A gas provided with a back plate and a ceiling plate provided with a space outside the plate, a heat insulating material attached to the inner surfaces of the back plate and the ceiling plate, and a fan provided in a part of the space. Insulated switchgear.