JPS60244010A - Oil-immersed electric apparatus - Google Patents

Abstract

PURPOSE:To obtain an oil-immersed electric apparatus enabled to discharge rapidly insulating oil at emergency time when a fire is generated by a method wherein an upper part discharge orifice to discharge insulating oil to the outside of an oil tank is provided to the oil tank at the upper part of the blockade type part of the apparatus. CONSTITUTION:At a transformer apparatus 21, when a fire is generated, sluice valves 16, 20 and a suction valve 17 are opened wholly, and insulating oil 5 in an oil tank 2 is discharged in an oil accommodating tank 13. At this case, the insulating oil 5 at the upper part inside of the oil tank 2 is discharged directly from an upper part discharge orifice 18 without passing through oil gaps 8, 9 having large fluid resistance, and the whole insulating oil 5 in the oil tank 2 is discharged in a short time in cooperation with discharge of insulating oil 5 from an oil discharge piping 15. Insulating oil can be discharge from both of the lower part discharge orifice and the upper part discharge orifice like this, and at emergency time when a fire is generated, because insulating oil is discharged rapidly from the oil tank, the fire of the oil-immersed electric apparatus and the spread of the fire can be checked.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an oil-filled electrical appliance device, and more particularly to an oil-filled electrical appliance device that enables rapid discharge of insulating oil.

[Prior art]

FIG. 1 is a cross-sectional view of a conventional oil-filled electric appliance device, for example, a transformer device, showing an oil tank λ in the transformer device, a transformer main body 3 housed in the oil tank λ, and the vicinity of the oil tank λ. It is equipped with a cooler, etc.

The transformer body 3 is immersed in insulating oil 5 and housed in an oil tank λ. The high-voltage device main body 3 is composed of an iron core 6, windings, and the like. Oil grooves and grooves are formed inside the iron core 6 and the windings, respectively. When the insulating oil 5 passes through this oil gap 9, heat from the iron core 6 and the winding 7 is removed.

A blockage-like part 10 is provided at the bottom of the oil tank. A lower discharge port // is formed below the obstruction-like portion 10. This blockage-like portion 10 functions to limit the outflow rate when the insulating oil flows out from the transformer body 3 through the lower discharge port // to the cooler pavilion by the action of the pump 2. . Due to this action, the insulating oil 5 spreads to the oil gaps and holes, and the iron core 6 and the windings are efficiently cooled.

Oil storage tank/3 is buried underground away from the oil tank. This oil storage tank/3 is separated from the oil tank 2 by a firewall/wall. There is an oil discharge pipe/S between the oil collection tank/3 and the oil tank λ.
is installed. A gate valve /6 is installed in the oil discharge pipe /6, and in the event of a fire, by opening this gate valve /6, the combustible insulating oil j in the oil tank λ can be expelled. It is designed to be discharged into oil tank lJ. Note that /7 is an intake valve that releases the negative pressure in the oil tank 11 when the insulating oil in the oil tank is discharged.

In the conventional transformer device configured as described above, the blockage-like part /θ helps improve the cooling efficiency of the iron core 6 and the windings, while the insulating oil S can be pumped into the oil storage tank in a short time. Therefore, in the event of an emergency such as a fire, it takes time to drain the insulating oil 5 in the oil tank λ.
There was a drawback that the fire could spread not only to the transformer device itself but also to other parts.

[Summary of the invention]

This invention was made for the purpose of eliminating the above-mentioned drawbacks, and has a simple structure in which an upper discharge port is provided in the oil tank above the blockage-like part to discharge insulating oil to the outside of the oil tank. The present invention provides an oil-filled electrical appliance device that can quickly discharge insulating oil.

[Embodiments of the invention]

Hereinafter, one embodiment of the oil-filled electrical appliance device of the present invention will be described with reference to FIG. FIG. 2 is a sectional view showing an embodiment of the present invention, and the same or corresponding parts as in FIG.

An upper discharge port /l is formed in the oil tank λ above the obstruction-like portion IO. Insulating oil 3 is discharged from this upper discharge port /g to oil storage tank /3 through oil discharge pipe /9. The gate valve 20d attached to the oil discharge pipe/de is normally closed.

In the transformer device configured as described above,
In the event of a fire, the gate valve 6°20 and the intake valve 20 are fully opened, and the insulating oil 5 in the oil tank is discharged into the oil storage tank 3 as shown by the arrow in FIG. In this case, the insulating oil S in the upper part of the oil tank does not pass through the oil gaps t and 9, which have large fluid resistance, but is directly discharged from the upper discharge port /l, and the insulating oil is discharged from the oil discharge pipe 15 (3)! Combined with this, all the insulating oil in the oil tank is drained in a short time.

In the above embodiment, one end of the oil discharge pipes /r and /9 were provided at the lower discharge port l/ and the upper discharge port /l, respectively, but the oil discharge pipe /! , /9 may be combined into a single pipe having a large diameter. This is effective in reducing the number of piping components.

In addition, in the above embodiment, the case of the inner iron type transformer device, 2/ is explained, but as shown in FIG. If the upper discharge port J41L is provided in the upper discharge port J41L, the same effects as in the above embodiment can be obtained.

21, 22 Furthermore, in the above embodiment, the transformer device 1.

However, the present invention is not limited thereto, and any electrical device containing insulating oil, such as a reactor, may be used.

〔Effect of the invention〕

As explained above, according to the oil-filled electrical appliance device of the present invention,
With a simple configuration in which an upper discharge port is provided in the oil tank above the closed base-like part to discharge insulating oil to the outside of the oil tank (4'), the insulating oil can be discharged from both the lower discharge port and the upper discharge port. For example, in the event of an emergency such as a fire, the insulating oil can be quickly discharged from the oil tank, which has the effect of preventing a fire and the spread of the fire in the oil-filled electrical equipment.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a conventional transformer device, FIG. 2 is a sectional view showing one embodiment of the present invention, and FIG. 3 is a sectional view showing another embodiment of the present invention. 1, Co/, λ Co...Transformer equipment (oil-filled electrical equipment), Co/
・Oil tank, 3...Transformer body (electrical appliance body),! ...Insulating oil, B...Iron core, Ri...Winding, ff,?・Oil gap, 10,2
．． 2. Obstruction-like part, //... Lower outlet, /l, 24I
...Top discharge port. In each figure, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] an oil tank in which the electrical appliance is immersed in insulating oil;
A closed-off part is provided within this oil tank and controls the flow of insulating oil inside the electrical appliance body, and a lower drain is provided in the oil tank below this closed-off part to discharge the insulating oil to the outside of the oil tank. An oil-filled electrical appliance device comprising an outlet, wherein the oil tank above the blockage-like part is provided with an upper discharge port for discharging insulating oil to the outside of the oil tank.