KR200420983Y1 - Vacuum circuit breaker link structure of gas insulated switchgear - Google Patents

Abstract

The present invention relates to a vacuum circuit breaker link structure of the gas insulated switchgear.

The vacuum circuit breaker link structure of the gas insulated switchgear according to the present invention is installed in the housing in which the circuit breaker, the disconnecting unit, and the ground circuit breaker are accommodated, and the manipulator part and the manipulator part for controlling the breaker part. A cubicle-type gas insulated switchgear comprising a link unit for transmitting an operation to the breaker unit, the link unit comprising: a link spindle rotatably coupled to one side of the housing; A link operation lever having one end rotatably connected to the manipulator portion and the other end fixedly coupled to the link spindle, and transmitting an operation of the manipulator portion to the link spindle; A pressure regulating means rotatably coupled to the first auxiliary lever fixedly coupled along the link spindle; A second auxiliary lever one end of which is rotatably coupled to the pressure adjusting means and the other end of the breaker; A coupling pin formed on both sides of the second auxiliary lever and inserted into a coupling part of the second auxiliary lever and the breaker; And it is coupled to one side of the breaker portion, characterized in that consisting of a guide formed in both sides of the linear guide slot groove is inserted into the coupling pin.

Gas Insulated Switchgear, Manipulator, Link, Breaker, Guide

Description

Vacuum Circuit Breaker Link Assembly of Gas Insulated Switchgear

1 is a front view showing an operation unit of the conventional gas insulated switchgear.

Figure 2 is a side view for explaining the link structure and operation of the conventional gas insulated switchgear.

3 is a perspective view showing the configuration of a gas insulated switchgear according to the present invention.

4 is a perspective view showing a link unit and a breaker unit according to the present invention.

Figure 5a and 5b is a side view for explaining the operation of the link structure of the gas insulated switchgear according to the present invention.

<Description of Symbols for Main Parts of Drawings>

10: operation unit 16: operation unit spindle

17: operating lever 18: operating rod

20: link unit 21: link spindle

22: link operating lever 23: first auxiliary lever

24: pressure adjusting means 27: second auxiliary lever

29: guide pin 30: guide

31: guide groove 40: breaker

41: bellows 42: movable body

43: insulating rod 44: vacuum interrupter

45: movable conductor

The present invention relates to a vacuum circuit breaker link structure of the gas insulated switchgear. In more detail, a guide is installed to transmit the operation of the operation unit to the breaker unit in a straight direction, and the contact inside the breaker unit is prevented from shaking and tilting when the movable conductor performs power supply and disconnection of the breaker unit. The present invention relates to a vacuum circuit breaker link structure of a gas insulated switchgear that can prevent damage and improve operation performance.

As is generally known, the gas insulated switchgear is a main breaker and disconnecting switch, an earthing switch, a lightning arrester, a main bus and a branch circuit, which are main components of a substation. In particular, the breaker is filled with SF6 gas having excellent insulation and extinguishing characteristics. Therefore, the substation can be miniaturized and safety and reliability can be improved.

Since the gas insulated switchgear uses SF6 gas, the switchgear and conductors are built into the metal tank, so it can be installed with only 5 ~ 10% of the area compared to outdoor iron substations, and unlike the outdoor iron substations, the charging part is sealed. It is almost unaffected by climate and prevents fouling of insulators by dust, steam, salts, etc., thus retaining its excellent initial characteristics.

The gas insulated switchgear is a power device that can continuously supply high-quality electricity. The gas insulation switchgear is composed of a manipulator part, a bus bar part, a disconnect part part, and a breaker part. will be.

A link structure for controlling the breaker unit through an electrical signal or a mechanical motion of the control unit is disclosed in Publication No. 2003-0075303 ("Vacuum Breaker Link Structure of Gas Insulated Switchgear" Filed Date: March 18, 2003) It is.

1 is a front view showing a control unit of the conventional gas insulated switchgear, Figure 2 is a side view for explaining the link structure and operation of the conventional gas insulated switchgear.

As shown, the vacuum breaker link structure of the gas insulated switchgear is operated by the input switch 12 or the disconnect switch 14, and the input switch 12 is automatically or manually adjusted while the electric motor 11 and the input spring are adjusted. (13) and the shut-off spring 15 and the like, and the operation unit 10 and the operation of the manipulator 10, which are operated by the electric motor 11, the closing spring 13 and the blocking spring 15, etc., are blocked. It consists of a link unit 20 for transmitting to the base 40 and the breaker unit 40 to determine the power supply and cut off through the bus according to the operation transmitted through the link unit 20.

At this time, the link unit 20 is the link axis through the link operation lever 22 the operation transmitted through the manipulator lever 17 and the operating rod 18 formed integrally with the manipulator spindle 16 of the manipulator 10. The first auxiliary lever 22 integrally formed with the link spindle 21 and the pressure adjusting means 24 connected to the first auxiliary lever 22 are transmitted to the second auxiliary lever 27. do.

The operation of the manipulator 10 transmitted as described above is transmitted to the movable body 42 connected to the second auxiliary lever 27 so that the movable body 42 moves forward and backward according to the rotation of the second auxiliary lever 27. .

In the link structure as described above, the movable body 42 moves forward and backward while the second auxiliary lever 27 rotates, so that the movable body 42 is shaken and tilted during the forward and backward movements.

The swing and tilt of the movable body 42 are contacted or short-circuited in a state in which the movable contact is inclined instead of simultaneously contacting and shorting the movable contact and the fixed contact inside the main body of the breaker unit 40 connected to the movable body 42. There is a problem that a gap is generated at one contact point, and sparks and arcs are generated in the gap between the contact points, thereby damaging the contact point.

The present invention is devised to solve the above problems, the object of the present invention is to install a guide to transmit the operation of the operation unit to the breaker in a linear direction, the movable conductor is turned on and off the breaker The present invention provides a vacuum circuit breaker link structure of a gas insulated switchgear which prevents shaking and tilting, thereby preventing damage to the contacts inside the circuit breaker and improving operation performance.

The present invention for achieving the above object is installed in the front of the housing and the housing housing the breaker unit, disconnecting unit, ground switch unit and the like, the operation unit for controlling the breaker and the operation of the operation unit In the cubicle-type gas insulated switchgear consisting of a link portion for transmitting to the breaker portion,

The link unit has a link spindle rotatably coupled to one side of the housing, one end of which is rotatably connected to the manipulator unit, and the other end is fixedly coupled to the link spindle, and a link operating lever for transmitting the operation of the manipulator unit to the link spindle, A pressure regulating means rotatably coupled to the first auxiliary lever fixedly coupled along the main shaft, a second auxiliary lever whose one end is rotatably coupled with the breaker part, and the second auxiliary lever, respectively; Protruding portion is formed to be coupled to the coupling pin is inserted into the coupling portion of the second auxiliary lever and the breaker portion and the breaker portion is characterized in that consisting of a guide formed on both sides of the linear slot-type guide groove into which the coupling pin is inserted.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 is a perspective view showing the configuration of a gas insulated switchgear according to the present invention, Figure 4 is a perspective view showing a link portion and a breaker according to the present invention, Figures 5a and 5b of the gas insulated switchgear according to the present invention Side view for explaining the operation of the link structure.

As shown in FIG. 3, the gas insulated switchgear is provided with a control panel for electrically or mechanically controlling the gas insulated switchgear installed at the front side, and an operator unit 10 is installed inside the control panel. It consists of a housing (1) surrounding the breaker portion 40 and disconnectors.

As shown in FIG. 4, the link unit 20 includes a link spindle 21, a link operating lever 22 for transmitting to the link spindle 21, a first auxiliary lever 23, and a pressure adjusting means ( 24, the second auxiliary lever 27, the guide pin 29 and the guide 30.

The link spindle 21 is rotatably coupled to one side of the housing 1. At this time, both sides of the link spindle 21 is coupled to a bracket 21 'having a rolling means such as a bearing or a bush, and the bracket 21' is coupled to the housing 1.

One end of the link operation lever 22 is fixedly installed on the link spindle 21, and the other end thereof is coupled to the operation rod 18 of the manipulator 10. The link operation lever 22 is rotatably coupled using the operation rod 18 and the coupling pin 19, and transfers the operation of the manipulator 10 to the link spindle 21 through the operation rod 18. do.

The first auxiliary lever 23 is fixedly installed on the link spindle 21, and may be installed in the same number as the breaker part 40 along the link spindle 21 at equal intervals.

The pressure adjusting means 24 operates the movable rod 25 and the movable rod 25 which are elastically connected between the first auxiliary lever 23 of the link spindle 21 and the second auxiliary lever 27 described later. (Extension) is made of an elastic member 26 for automatically adjusting the length. At this time, the carbon member 26 may be a coil spring.

The second auxiliary lever 27 has a support shaft 28 formed at the center thereof, one end of which is coupled to the movable rod 25 of the pressure adjusting means 24, and the other end of the second auxiliary lever 27 includes a movable body of the bellows 41 which will be described later. 42).

The second auxiliary lever 27 is supported by a support shaft 28 coupled to a support holder (not shown) installed at one side of the breaker unit 40.

On the other hand, the second auxiliary lever 27 and the movable body 42 are coupled by the guide pin 29. At this time, the guide pin 29 is inserted through the second auxiliary lever 27 and the movable body 42, and is formed to have protrusions of a predetermined length on both sides of the coupling portion.

The guide 30 is installed at one side of the breaker part 40, and converts the rotational motion of the second auxiliary lever 27 into a linear motion and transmits it to the breaker part 40.

 Preferably, the guide 30 is formed in a "c" shape, and the movable body 42 penetrates and protrudes in the center thereof, and a straight slot guide groove 31 into which the guide pin 29 is inserted is formed at both sides. .

The guide 30 is a linear slot guide groove 31 formed at both sides when the movable body 42 moves up and down in accordance with the rotation of the second auxiliary lever 27 rotating about the support shaft 28. The guide pin 29 is moved along the movement of the guide pin 29 so that the movable body 42 can be linearly moved up and down.

The circuit breaker 40 includes a bellows 41, an insulating rod 43, and a vacuum interrupter 44. The bellows 41 has a movable body 42 inserted therein and the movable body 42. The second auxiliary lever 27 is connected to one end of the insulating rod 43 is connected to the other end. This insulated rod 43 is an insulator and has an insulator having strength.

In addition, the vacuum interrupter 44 includes a movable contact and a fixed contact (not shown), and the movable contact extends to the outside of the vacuum interrupter 44 to be interlocked with the movable conductor 45 connected to the insulating rod 43. When the vacuum interrupter 44 is in the closed state, the fixed contact point and the movable contact point are in contact with each other, and sufficient pressure is applied to the movable contact point to withstand the accident current flowing through the circuit. By the action of the peripheral element, including a separated at an appropriate speed and distance.

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

FIG. 5A illustrates a state in which power is interrupted to the breaker unit 40. When the operation of supplying power to the breaker unit 40 is started in the illustrated state, the motor 11 of the manipulator unit 10 is driven. If the worm gear 50 in the gearbox is rotated about 45 times by using a manual operation handle or the manual operation handle, the worm wheel 51 engaged with the worm gear 50 is rotated, and the injection sprink rank 52 coupled to the same shaft is half. It is rotated clockwise, whereby the closing spring 13 is gradually increased and filled.

When the feed coil (not shown) is electrically excited when the feed spring 13 is charged, or the feed switch 12 is manually pressed, the feed cam 53 and the feed latch 54 in the gearbox are separated to feed. The spring crank 52 and the cam lever 55 rotate counterclockwise. In addition, an input rod 56 connected to the cam lever 55 rotates the manipulator spindle 16 counterclockwise.

As the manipulator spindle 16 rotates, the manipulator lever 17 rotates, and the manipulator lever 17 rotates to push the actuating rod 18 and the link actuating lever 22. As a result, the link spindle 21 is rotated clockwise.

As the link spindle 21 is rotated, the movable rod 25 of the compression adjusting means 24 is pushed. As the movable rod 25 is pushed, the second auxiliary lever 27 is rotated counterclockwise around the support shaft 28, and the movable body 42 of the bellows 41 is rotated while the second auxiliary lever 27 is rotated. ) And power are turned on while pushing up the movable conductor 45 of the insulating rod 43 and the vacuum interrupter 44.

At this time, the guide pin 29 connecting the second auxiliary lever 27 and the movable body 42 of the bellows 41 moves while moving upward along the straight slot guide groove 31 formed in the guide 30. The sieve 42, the insulating rod 43, and the movable conductor 45 are moved upward. Accordingly, while the movable contact (not shown) connected to the movable conductor 45 is brought into contact with the fixed contact (not shown) installed inside the vacuum interrupter 44, the state changes to the state as shown in FIG. 5B, and power is supplied to the breaker unit 40. This is done.

Therefore, since the operation of the manipulator 10 is converted into a linear motion by the guide groove 31 formed in the guide 30 of the link portion 20 and transferred to the vacuum circuit breaker 40, the power supply of the vacuum circuit breaker 40. There is an advantage that the closing operation can be performed without shaking or tilting.

On the other hand, in contrast, when an accident current or the like is generated from the outside, an operation of cutting off the power supplied to the breaker unit 40 is started. 5B illustrates a state in which power is applied to the breaker unit 40 (operator unit is omitted), and when the illustrated state electrically excites the blocking coil (not shown) or presses the blocking switch 14, the blocking spring is shown. As the 15 is operated, the manipulator spindle 16 is rotated clockwise.

As the manipulator spindle 16 rotates, the manipulator lever 17 rotates, and the manipulator lever 17 rotates to pull the actuating rod 18 and the link actuating lever 22. As a result, the link spindle 21 is rotated counterclockwise.

The link spindle 21 rotates to pull the movable rod 25 of the compression adjusting means 24. As the movable rod 25 is pulled, the second auxiliary lever 27 is rotated clockwise about the support shaft 28, and the movable body 42 of the bellows 41 is rotated while the second auxiliary lever 27 is rotated. And the movable conductor 45 of the insulating rod 43 and the vacuum interrupter 44 are moved downwards to separate the movable contact from the fixed contact to cut off the power supply.

The present invention is not limited only to the above-described embodiments, and the present invention may be embodied in other forms by those skilled in the art without departing from the technical spirit of the present invention. All design changes made within the technical scope equivalent to the claims are considered to be included in the scope of the present invention.

As described above, the present invention is because the operation of the operation unit is converted into a linear motion by the guide groove formed in the guide of the link unit is transferred to the vacuum circuit breaker, the power supply operation of the vacuum circuit breaker can be performed without shaking or tilting. There is an advantage.

Claims (1)

Cubicle-type gas consisting of a housing for accommodating the breaker unit, disconnecting unit, grounding switch unit, etc., and a manipulator unit for controlling the breaker unit, and a link unit for transmitting the operation of the manipulator unit to the breaker unit. Insulated switchgear, The link unit and the link spindle rotatably coupled to one side of the housing; A link operation lever having one end rotatably connected to the manipulator portion and the other end fixedly coupled to the link spindle, and transmitting an operation of the manipulator portion to the link spindle; Pressure adjusting means rotatably coupled to a first auxiliary lever fixedly coupled along the link spindle; A second auxiliary lever one end of which is rotatably coupled to the pressure adjusting means and the other end of the breaker; A coupling pin formed on both sides of the second auxiliary lever and inserted into a coupling part of the second auxiliary lever and the breaker; And The circuit breaker link structure of the gas insulated switchgear is coupled to one side of the circuit breaker, characterized in that made of a guide formed in both sides of the linear slot guide groove is inserted into the coupling pin.

Images