KR100324495B1 - Gas insulation load two-way switch - Google Patents

Abstract

The present invention relates to a gas insulated switchgear, the conventional puffer arc extinguishing chamber structure is mainly composed of a gas insulated load switchgear, but is not available in case of leaking gas, extreme cold and temperature conditions (-45 ℃), etc. The present invention has a problem, the present invention is mounted on the lower portion of the main body and the motor for generating power when opening and closing the contact, the main connection means for interlocking by receiving the power of the motor, the clock and the counter clock when opening and closing the contact And a vacuum blocking means for opening and closing the contact by the main connecting means, and the gas pressure when the arc extinguishing chamber is located inside the vacuum bulb and the gas leaks. Even when it is, it withstands the impact withstand voltage, so there is no abnormality in use, and condensation of gas occurs due to the decrease of ambient temperature. Because it is possible to exert a uniform insulating properties and arc extinguishing property, regardless of the arc extinguishing capability decreases.

Description

GAS INSULATION LOAD TWO-WAY SWITCH}

The present invention relates to a gas insulated load switch, and more particularly, a gas insulated load switch is installed in an area having extreme cold and cold conditions (-45 ° C.) to be usefully used.

In general, a gas insulated load switch, an important power device that enters the outdoors or indoors at a power distribution system rated voltage of 25.8 KV underground, has a very important position in the distribution system due to the addition of line branching, section opening and closing, and protection of the transformer at the rear end. In the conventional gas insulated load switch, the arc extinguishing chamber structure inside the sulfur hexafluoride gas (SF6) turns on / off the contact using a puff housing. When pulled, the mechanism rotates in sequence, the connecting rod moves upwards, the main shaft rotates, and the contact is introduced by the parallel movement of the contact by the insulated arm, and when the contact is opened, It works in the reverse order.

However, such a conventional puffer arc extinguishing chamber structure constitutes the main type of the gas insulated load switch, but there is a problem such that it cannot be used in case of leakage of gas or in extreme cold and hot conditions (-45 ° C).

Accordingly, the present invention is to solve the above-mentioned problems, the gas insulated load switch can be usefully installed in an area having extreme cold and cold conditions, and can be used even in the atmospheric pressure state where gas leakage occurs The purpose is to provide a switch.

1 is a cross-sectional view showing the main part of the present invention.

Figure 2 is a side view showing a state in which the handle of Figure 1 is installed

3 is an enlarged view of FIG.

4 is a top view of FIG. 3

Figure 5 is a cross-sectional view showing a state of closing of the present invention

6 is a cross-sectional view showing a state at the time of opening of the present invention.

7 is an enlarged view illustrating main parts of FIGS. 5 and 6;

Explanation of symbols on the main parts of the drawings

One; Main body 2; motor

3; Motor shaft 4; First link

5; Second link 6; handle

8; Sealing shaft 9; Guide

10; First axis 11; 2nd axis

12; First spring 13; 3rd link

14; Fourth link 15; 5th link

16; Connecting bar 17; Insulating Arm

18; Second spring 19; Main shaft

20; A housing 21; 1st support piece

22; Second support piece 23; First push bar

24; Second push bar 25; Third spring

26; Fourth spring 27; Spring housing

28; Contact

In order to achieve the above object, the present invention is mounted to the lower portion of the main body is a motor for generating power when opening and closing the contact, a first link coupled to the motor shaft of the motor and installed on one side of the main body, the first The second link is rotatably coupled to the lower end of the link and the handle is coupled to the upper end, and is rotatably coupled to the sealing shaft coupled to the center of the handle and inserted into the guide hole formed on one side of the body to move along the guide hole. A first spring provided between the first and second shafts, the first spring for providing an elastic force during operation of the 1.2 axis, a third link pivotally coupled to the center of the second axis, and Main connecting means having a fourth link, one end of which is rotatably coupled to a lower end of the third link, and a fifth link of one end of which is rotatably coupled to the other end of the fourth link; Provided is a gas insulated load switch comprising a handle which rotates in a clockwise and counterclockwise direction and a vacuum interrupting means for opening and closing the contact by the main connecting means.

The vacuum blocking means is connected to the other end of the fifth link is rotatably coupled to the bar, the other end of the connecting bar is elastically supported by the second spring is rotatably coupled and the top is rotatably coupled to the housing A main shaft having one end connected to the other end of the connecting bar and the lower end of the connecting arm and the other end connected to the bottom end of the third link and one end of the fourth link, and being rotatable on both sides of the housing. A first push bar installed between the first and second support pieces to be installed, the first push bar and an upper part of the insulating arm, and a central part rotatably coupled between the first support piece and the upper end of the insulating arm The second push bar is configured to be folded.

A third spring is installed between the first and second support pieces, a fourth spring is installed between the housing and an upper end of the insulating arm, and a spring housing is installed on the first support piece.

Hereinafter, preferred embodiments of the present invention for achieving the above object will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view showing main parts of the present invention, FIG. 2 is a side view illustrating a state in which the handle of FIG. 1 is installed, FIG. 3 is an enlarged view of FIG. 2, FIG. 4 is a plan view of FIG. 3, and FIG. 5 is the present invention. 6 is a cross-sectional view showing a state of closing of the present invention, Figure 6 is a cross-sectional view showing a state of opening of the present invention, Figure 7 is an enlarged view of the main portion of Figures 5 and 6, the same reference numerals for the same parts as in the prior art. The present invention will be described.

The present invention is equipped with a motor (2) for generating power in the lower portion of the main body 1 filled with sulfur hexafluoride gas excellent in insulation and gas extinguishing of the gas insulated load switch, and the motor shaft of the motor ( 3) is coupled to the first link (4) installed on one side of the main body 1, the lower end of the second link (5) in conjunction with the first link (4) is rotatable to the first link (4) Coupled to the upper end of the second link 5, the handle 6 for opening and closing operation is rotatably coupled, the lower end of the first link (4) and the second link (5) bush (7) Is inserted.

In addition, a sealing shaft 8 is coupled to the center of the handle 6, and the sealing shaft 8 is inserted into a guide hole 9 formed at one side of the main body 1 to move along the guide hole 9. The first and second shafts 10 and 11 are rotatably coupled to each other, and the first and second shafts 10 and 11 are elastically coupled to each other between the first and second shafts 10 and 11. The first spring 12 is provided for the purpose, and the third link 13 is rotatably coupled to the center of the second shaft 11.

In addition, one end of the fourth link 14 is rotatably coupled to the lower end of the third link 13, and one end of the fifth link 15 is rotatably coupled to the other end of the fourth link 14. One end of the connecting bar 16 is rotatably coupled to the other end of the fifth link 15, and a lower end of the insulating arm 17 is elastically coupled to the other end of the connecting bar 16 by the second spring 18. It is supported and rotatably coupled, one end of the main shaft 19 is connected to the other end of the connecting bar 16 and the lower end of the insulating arm 17, the lower end and the fourth link of the third link 13 The other end of the main shaft 19 is connected to one end of the 14.

The upper end of the insulating arm 17 is rotatably coupled to the housing 20 made of aluminum, and the first and second supporting pieces 21 and 22 are installed at both sides of the housing 20. A first push bar 23 is installed between the first support piece 21 and the upper portion of the insulating arm 17, and a central portion is provided between the first support piece 10 and the upper end of the insulating arm 17. A second push bar 24 to be folded is rotatably coupled, and a third spring 25 is installed between the first and second support pieces 21 and 22, and insulated from the housing 20. A fourth spring 26 is provided between the upper ends of the arms 17, and a spring housing 27 is provided on the first support piece 21.

1 to 7, when the gas insulated load switch is switched from the closed state as shown in FIG. 5 to the open state as shown in FIG. 6, first, the lower portion of the main body 1 is illustrated. The motor shaft 3 is rotated in the clockwise direction as the motor 2 mounted therein is driven, and the first link 4 is rotated in the clockwise direction sequentially, and the second link 5 is downward. Move, the handle 6 rotates clockwise, the sealing shaft 8 coupled with the handle 6 rotates clockwise, and a first shaft rotatably coupled to the sealing shaft 8. 10 rotates clockwise along the guide hole 9, and the first spring 12 connected between the first and second shafts 10 and 11 maintains a tension state, and the second As the shaft 11 is rotated counterclockwise, a third link 13 rotatably coupled to the center of the second shaft 11 is provided. The fourth link 14 rotates counterclockwise, and the fifth link 15 rotates counterclockwise.

At the same time, a force is transmitted to the connecting bar 16 having one end rotatably coupled to the other end of the fifth link 15 so that the insulating arm 17 rotates in a counterclockwise direction, and the insulating arm 17 The first and second push bars 24 and 25 are operated by the rotational force of) to move the spring housing 27 installed in the first support piece 21 on one side of the housing 20 to the right. ) Will be opened.

In addition, when the gas insulated load switch is changed from the open state as shown in FIG. 6 to the closed state as shown in FIG. 5, the motor shaft 3 is driven by first driving the motor 2 mounted in the lower part of the main body 1. At the same time as the clockwise rotation, the first link 4 is rotated clockwise sequentially, the second link 5 is moved upward, the handle 6 is rotated counterclockwise The sealing shaft 8 coupled to the handle 6 rotates counterclockwise, and the first shaft 10 rotatably coupled to the sealing shaft 8 is counterclockwise along the guide hole 9. The first spring 12 connected between the first and second shafts 10 and 11 maintains a compressed state, and the second shaft 11 is rotated in a clockwise direction to The third link 13 rotatably coupled to the center of the two shafts 11 is moved downward, and the fourth link 14 is clockwise. By being rotated, the fifth link 15 is rotated in the clockwise direction.

At the same time, a force is transmitted to the connecting bar 16 having one end rotatably coupled to the other end of the fifth link 15 so that the insulating arm 17 rotates in the clockwise direction, and the insulating arm 17 The first and second push bars 24 and 25 are operated by the rotational force of the spring housing 27 installed in the first support piece 21 on one side of the housing 20 to move to the left. This will be converted to a closed state.

As described above, in the present invention, since the arc extinguishing chamber is located inside the vacuum bulb and the gas leaks when the gas leaks to the atmospheric pressure state, it can withstand the shock withstand voltage, and thus there is no abnormality in use. Due to the occurrence of condensation of the gas according to the present invention, it is a very useful invention provided with constant insulation characteristics and arc extinguishing characteristics irrespective of deterioration of arc extinguishing capability.

Although the preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the above-described embodiments, and the present invention may be commonly used in the technical field to which the present invention pertains without departing from the gist of the present invention as claimed in the following claims. Anyone with knowledge will be able to make various changes.

Claims (3)

A motor mounted on the lower part of the main body to generate power when the contact is opened and closed, a first link coupled to the motor shaft of the motor and installed on one side of the main body, and a lower end rotatably coupled to the first link. A second link having a handle coupled to the second link, a first and second shafts rotatably coupled to the sealing shaft coupled to the center of the handle and inserted into a guide hole formed on one side of the main body and moving along the guide hole; A first spring provided between the first and second axes to impart an elastic force during operation of the first and second axes, a third link rotatably coupled to the center of the second axis, and one end at the lower end of the third link. A main connecting means having a fourth link rotatably coupled, a fifth link at one end rotatably coupled to the other end of the fourth link, and a handle rotating in a clockwise and counterclockwise direction when the contact is opened and closed; And a gas-insulated load break switch of a contact by the main connecting means characterized in that configured to include a vacuum cut-off means for opening and closing. According to claim 1, wherein the vacuum blocking means is connected to one end rotatably coupled to the other end of the fifth link, the other end of the connecting bar is elastically supported by the second spring is rotatably coupled and the upper end is An insulating arm rotatably coupled to the housing, a main shaft having one end connected to the other end of the connecting bar and the lower end of the insulating arm, and the other end connected to the bottom end of the third link and one end of the fourth link, and the housing First and second support pieces installed rotatably on both sides of the first push bar installed between the first support piece and the upper portion of the insulating arm, and between the first support piece and the upper end of the insulating arm. A gas insulated load switch comprising: a second push bar pivotally coupled to the second push bar; 3. The method of claim 2, wherein a third spring is installed between the first and second support pieces, a fourth spring is installed between the housing and an upper end of the insulating arm, and a spring housing is installed on the first support piece. Gas insulated load switchgear.