JPS58204433A - Gas breaker - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] This invention relates to a gas breaker.

More specifically, the present invention relates to a gas breaker equipped with arc extinguishing means that generates a gas flow in cooperation with the breaker operation.

In the past, this type of bribery was shown in Figure 1.

In Figure π, the left side of the center line shows the closed position of the breaker, and the right side shows the closed position.

Place in a closed container (not shown) filled with a combustible gas.

A fixed electrode / and a movable electrode disposed movably so as to be in contact with and separate from the fixed electrode / are arranged, and a cylinder 3 with an opening at the lower end and a soil wall JaVC through hole 3b is placed in the 5T#JM pole. It is fixed. A lower terminal q is fixedly disposed below the cylinder 3, and a piston that engages with the cylinder 3 is fixed to this lower terminal lI. An operating rod 6 connected to the movable electrode and the cylinder 3 is slid downwardly by an external operating force to bring the fixed chamber into and out of contact with the movable electrode. A guide member 7 is provided above the through hole 3b. With the above configuration, the shutoff operation of the shutoff 4 is as follows.

When the operating rod t moves downward due to external operating force.

The movable electrode fixed to the operating rod 6 and the cylinder 3 also move downward at the same time, and the fixed electrodes that were originally in contact with each other move downward.
The movable electrode and the movable electrode separate, and an arc is generated between the two electrodes as the electrode separates. At this time, the lower 11% of cylinder 3
[Thus, the gas inside the cylinder 3 is not compressed by the piston S and the pressure increases, so a gas flow is generated due to the differential pressure between this pressure and the pressure outside the cylinder 3. This gas flow flows upward from the through hole 3b, is guided to the guide member 7, and burns the arc to produce an arc extinguishing effect. Since the cylinder 3 has a fixed shape, the height of the cylinder 3 needs to be at least approximately the same as the distance from the closed position to the open position of the movable electrode 2. Cylinder 3 occupies more than a of the distance from the lower end of the pole/to the bottom, and the distance at the center tIi, and is it a breaker? The problem was that it was getting bigger.

The present invention seeks to overcome one or more of the drawbacks of the prior art by making the cylinder telescoping, thereby eliminating the need for a piston.

The purpose of this invention is to provide a gas breaker with a simplified structure that realizes miniaturization of the breaker.Hereinafter, an embodiment of the present invention shown in FIG. 2 will be described. In the figure, the left side of the center line shows the closed position of the breaker, and the right side shows the open position of the breaker.The flat plate is fixed to the operating rod 6 together with the movable electrode and the guide member and has a through hole ta. An earthen wall plate j having the shape of a metal ring is provided, the upper end is connected to the upper wall plate g, the lower end is connected to the lower terminal 44, and a plurality of metal rings ? A vertically expandable cylinder 9 formed by combining the cylinders a is disposed. The rest of the configuration is the same as that in FIG. 1, so the explanation will be omitted.

Next, the operation will be explained. In the closed state shown on the left side of the center line, the cylinder tab is in a fully extended state. From this state, when the operating rod 6 is pulled downward by an external operating force, the cylinder 9 contracts.

As the gas in the cylinder is kneaded, it is compressed, and the same arc extinguishing effect as described above cannot be obtained.

In the open position, the cylinder tabs are retracted into a hexagonal position.

With the above configuration, the piston in the conventional device is not required, and the distance from the fixed chamber 1fIf1/lower end to the lower terminal can be reduced to about % of that in the conventional device.

In addition, in the above embodiment, &t cylinder 9 is made of a plurality of gold p°.

Since it is composed of a combination of metal rings, the stiffness can be made into a bellows-like structure using a single flexible elastic body, and the same effect can be achieved.

As described above, the present invention realizes miniaturization of the breaker by significantly reducing the arc extinguishing chamber space of the breaker by providing a telescopic cylinder. effective.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view of a main part of a conventional device, and FIG. 2 is a vertical cross-sectional view of a main part of an embodiment of the present invention. l...Fixed electrode, 2...Movable electrode, q...Lower terminal, 6
・・Operation rod, 7.・Guiding member, t.・Soil wall board, ffa・
・Through hole, 9...Cylinder, qδ...Metal ring. In addition, in FIG. 1, the same reference numerals indicate the same or corresponding parts. Agent Shin Kuzuno - Figure 1 Figure 2

Claims (1)

[Claims] (/l) A sealed container filled with an insulating gas, fixed electrodes arranged in the sealed container, and movable ft.
A gas breaker comprising a pole and a retractable cylinder that cooperates with the movable electrode to generate a gas flow. -) Gas cutoff 5° according to claim 7, in which the cylinder is a combination of a plurality of metal rings. (3) Claim 7, in which the cylinder has a bellows structure formed of a single elastic body. gas breaker.