JPS603825A - 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] Industrial Field of Application The present invention is directed to blowing high-pressure gas generated in an arc into an arc. This is related to 15 gas appliances.

BACKGROUND ART As shown in FIG. 1, this type of gas breaker has a cylindrical body 2 forming a back pressure chamber C1 in an airtight insulating container 1 filled with a gas having good arc deformability. - Fixed electrode 4 electrically connected to the upper conductor 3 provided on the top of the C1 container 1
There is a device in which a movable electrode 6 is provided at the bottom of the back pressure chamber C1, and the movable electrode 6 is connected to the hand conductor 5 in an airtight and slidable manner. 1) At the disconnection switch, the container 1 is supported on an insulating support 7 [3! ! tied together. J to this gas cylinder 15I17i
3, when the movable electrode 6 is separated from the fixed electrode 4, the gas pressure in the back pressure chamber C1 is caused to decrease by -77 due to the arc A between the two electrodes, and the gas in the back pressure chamber is iJI air chamber C2 formed on the outside of the cylinder body 2 through the gas passages 4a and 6a inside the fixed electrode 4 and the movable electrode 6;
Then, the high-speed gas flow generated at this time is blown into the arc Δ to extinguish it.Also, as shown in Fig. 2, a nozzle N is arranged at the bottom of the pressurization chamber C1 to increase the pressure. The gas in the room is exhausted to the air chamber C2 through the gas passages 4a and 6a inside the fixed electrode 4 and the movable electrode 6, and also through the nozzle N. Are known.

In the gas cutter 15 shown in FIGS. 1 and 2 above,
In any case, there is only one exhaust chamber and the capacity of the exhaust chamber is limited, which limits the flow of gas that is blown onto the arc and impedes the improvement of cutting performance. There were drawbacks.

OBJECTS OF THE INVENTION An object of the present invention is to provide a gas breaker which can increase the capacity of the air chamber and improve the cutoff performance.

Structure of the Invention The present invention provides an insulating container filled with a gas having arc-extinguishing properties;
a first terminal conductor disposed near an end of the insulating container; a second terminal conductor that partitions the inside of the container into a first chamber and a second chamber for exhaust; a cylindrical portion +A disposed in the chamber to partition the first chamber into an NJf chamber and an exhaust chamber surrounding the back pressure chamber from the outside; A hollow fixed electrode inserted into the chamber is electrically connected to the second terminal conductor and the y? Stabilization chamber (a hollow movable electrode provided so as to be in contact with and separate from the fixed electrode, and the 57-movement chamber passed through the hollow part of the fixed electrode to the air chamber in the first chamber) 1! The first J to pass through
It is constituted by a J+ air passage and a second air passage that communicates the pressure chamber with the second chamber through the hollow portion of the movable electrode.

As mentioned above, when IN is completed, the volume of the exhaust chamber can be increased, so the flow rate of gas blown into the arc can be increased, and the performance can be improved. .

EXAMPLES Below, the present invention will be described in detail with reference to FIG. 1. In Figure 3, 10 is an insulating material such as epoxy resin 1'31
The upper end of the insulating container is hermetically closed by a plate-shaped first terminal conductor 11. A plate-shaped second terminal conductor 12 is disposed in the middle of the container 10, and the second terminal conductor 12 connects the container 10.
The interior is partitioned into a first chamber 13 and a second chamber 14.

In this embodiment, the second terminal conductor is cast into and fixed to the container 10 when the container 10 is molded, and the first terminal conductor 11 is attached to the upper end of the container 10 by means of a plug or the like.
It is being The container 10 has an airtight structure, and the first and second chambers are filled with an insulating gas having arc-extinguishing properties such as SF6 gas. A circular ( )-shaped protrusion 15 is provided concentrically with the container 10 at the center of the surface facing the first terminal conductor 11.
The lower end of a cylindrical tube member 16 is hermetically joined to the outer periphery of the tube member 5 . A conductive top cover 18 electrically and mechanically connected to the first conductor 11 is hermetically joined to a support rod 17 made of zero electrical material at the upper end of the cylindrical member 16. A pressurizing chamber 19 is formed inside the cylindrical member 16, and an exhaust chamber 20 is formed outside the cylindrical member 16. Sunawa JL)
Part ii: The first chamber 13 in the container 10 is partitioned into a back pressure chamber 20 and an air chamber 20. -1-
A hole 21 is installed in the center of 1118, and one end of a hollow fixed electrode 22 having a cylindrical shape as a whole is connected to the inner periphery of the hole 21. Fixed electrode 22 L; It has a so-called tulip-shaped 4vI structure in which a large number of axially extending ribs h are formed on the peripheral wall of a cylindrical body, and extends inside the back pressure chamber concentrically with the cylindrical member 16 toward the second terminal conductor 12. In the embodiment, since the fixed electrode 1ji 22 is configured in a lip shape, a cylindrical cover 23 surrounding the fixed electrode 22 is used to prevent gas leakage through the sleeves 1 of the electrode. The upper end of the fixed electrode 22 is open 10 into the exhaust chamber 20, and the electrode 2
A first exhaust passage 24 that connects the pressurizing chamber 19 to the exhaust chamber 20 through the hollow part of the electrode is formed inside the electrode.

Further, an electrode through hole 25 is provided in the center of the second terminal conductor, and the through hole 25 is passed through v1 to form a hollow hole. An a-shaped movable electrode 26 is inserted into the pressurization chamber 19 . A current collector 27 is arranged in a tubular groove provided on the inner periphery of the through hole 25,
Possible depending on the collector! IIJ electrode 26 is slidably supported and electrically connected to second terminal conductor 12 . The lower end of the movable electrode 26 is an M sticky plate 27 made of an insulator.
The movable electrode 26 is connected to an operating unit connected to an operating device (not shown) through a terminal 0, and the movable electrode 26 is driven up and down by the operating device so as to approach and separate from the fixed electrode 22 from inside the arc extinguishing chamber. An exhaust port 28 is provided in the peripheral wall at the lower end of the movable electrode 2G, and a second exhaust passage 2 is formed in which the pressurization chamber 19 is communicated with the second chamber 14 through the hollow portion of the movable electrode 26 and the exhaust port 28.
9 has been made 1ilS.

The first terminal conductor 11 is provided with a first external terminal 11A, and the second terminal conductor 12 is provided with a second external terminal 12A.

In the above gas breaker, when the movable electrode 2G is separated from the fixed electrode 22, an arc A is generated between the two electrodes, and the pressure in the pressurization chamber 19 rises rapidly due to this arc. At this time, near the opening of the pressurization chamber (near the lower end of the fixed electrode 22 (= near J and near the upper end f4 of the movable electrode)
Since the chamber is closed, high pressure gas does not flow out from the pressurization chamber. When the arc rII blockage ends near the zero point M of the arc current, the high-pressure gas stored in the stomach chamber 19 passes through the first JJI air passage 24 to the exhaust chamber 2 in the first chamber.
0 and is also initially discharged to the second chamber 14 through the second exhaust passage 29. Since the high-speed gas flow generated at this time is blown into the arc 8 (i=t), the arc Δ is rapidly cooled and reaches a dead arc. .

As described above, in the present invention, the space originally required for arranging the operating means such as the operating rod is used as the second chamber for the exhaust chamber, and the space is used as the exhaust chamber. It is possible to increase the capacity of one air chamber without going into the doll, and it is possible to increase the flow rate of gas blown into the arc and improve cutting performance. In addition, the cross-sectional area of the 4JI air port from the pressurization chamber to the exhaust chamber 20 and the second chamber 14 should be set appropriately.
In addition, the position of the second chamber 14 is set to an appropriate size in relation to the cross-sectional area of the IJ11 air port, and the flow rate of the gas blown to the arc is set to an optimum value. The setting 51 to obtain the specified breaking performance
can be facilitated.

Next, FIG. 4 shows an embodiment in which the present invention is applied to a type of gas decomposer in which a nozzle is attached to the exhaust hole of the pressurization chamber. A cylindrical tube member 16 is supported by an upper lid 18 connected to the η body 11 via a support rod 17, and a fixed electrode 22 is attached to the upper lid 18. In this embodiment, this cylindrical member 16 is made of an insulator.

A cylindrical cover 23 is attached to cover the outer periphery of the fixed electrode 22, and back pressure is applied to the inside of the fixed electrode. A first exhaust hole passage 24 is formed that communicates the i19 with the 1-no-1 gas palm 20. A nozzle 31 consisting of an insulating phase is attached to the opening at the lower end of the cylindrical member 16, and the movable electrode 26 supported by the second terminal conductor 12 via the current collector 27 can freely slide on the nozzle 31. It moves in and out of the pressurizing chamber 19 inside the cylindrical member 16. An exhaust port 28 is provided at the lower end of the movable electrode 26, and the hollow portion of the movable electrode 26 and the exhaust port 28 communicate the pressurizing chamber 19 with the second chamber 14.
A second exhaust passage 29 is configured.

The lower end of the movable electrode 26 is connected to the operating shaft 30 via a connecting plate 270 (made of an insulating material).

From the gas cutter 15 shown in Fig. 4 above, the movable electrode 2G
When the arc is displaced downward and separated from the fixed electrode 22 and an arc A is generated, part of the pressurizing chamber 19 is opened and the arc is closed, and the pressure inside the pressurizing chamber rises. When the arc blockage state ends, high pressure gas flows into the first JjJ and the second f, +
1) 1 is discharged into the 41 gas 20 and the second chamber 14 through the gas and oil passages 24 and 29, and the gas is blown into the arc Δ.
You can get rid of it. J, when the movable mold (4) is further displaced downward and pulled out from the nozzle 31, the gas in the back pressure chamber flows out through the nozzle into the air chamber 20, and the gas flow generated at this time is A blower blows near the tip of the BIJ electric 4L 26. J and Reno A are cooled by these, and the current is cut off.

J3 In the above embodiment, the cylindrical member 1G is made of an insulating material, but it is also possible to make the cylindrical member 1G of metal and to electrically insulate the cylindrical part (fi) from the movable electrode or the fixed electrode (J3). You may also do so.

Effects of the Invention As described above, according to the present invention, the space originally required for arranging and installing the operation means for operating the movable electrode is used to form the second chamber, and this is used as the exhaust chamber. Since we have made it so that it is possible to increase the capacity of the exhaust chamber and increase the flow rate of gas blown into the arc without turning the Shinya Alliance into a puppet, we can increase the flow rate of gas blown into the arc. s Is there any benefit to improving R7i performance? There is a.

[Brief explanation of drawings]

Figures 1 and 2 are cross-sectional views showing different conventional examples, and Figures 3 and 4 are cross-sectional views showing different embodiments of the present invention. . 10... Insulating container, 11... 1st terminal) 9 bodies, 1
2... Second terminal conductor, 13... First chamber, 14...
...Second chamber, 16...Cylinder member, 17...Support rod,
19...7I-pressure chamber, 20...tJI air chamber, 22.
...Fixed electrode, 26...Movable electrode, 24...First IJI air passage, 29...Second exhaust path J18゜Procedure IJLE (Spontaneous,) Patented on March 27, 1980 Director-General Wakasugi Kazuo 1, Matter f] Indication of Patent Application 1982-111517-2, title of invention Gas breaker 3, ministry case regarding amendment Patent applicant (394) Nissin Electric Co., Ltd. Company 4, Agent, 6th floor, Bunzan Building, 4'-31'-6 Shinbashi, Minato-ku, Tokyo Particulars 1q 6. Contents of the amendment A clear statement (+ (no change in content) printed in the prescribed size) on a separate sheet. I'll correct it accordingly.

Claims (1)

[Claims] an insulating container filled with a gas that has arc-prone properties, an IC first conductor placed near the part 9, d of the insulating container, and a first chamber for exhausting the inside of the container. a second terminal conductor that partitions into a f52 chamber for use; and a cylindrical member that is disposed within the first Y and partitions the first chamber into a back pressure chamber and an exhaust chamber that surrounds the 1ffE chamber from the outside. , a hollow fixed electrode electrically connected to the first terminal conductor and inserted into the backpressure chamber, and a hollow fixed electrode electrically connected to the second terminal conductor and inserted in the booster chamber; a hollow movable electrode provided to move toward and away from the fixed electrode; a first exhaust passage that communicates the back pressure chamber with the exhaust air in the first chamber through the hollow part of the fixed electrode; a second 1) air passageway that passes through the hollow part of the movable electrode and communicates with the second chamber;
l? A gas breaker characterized by having δ.