WO2023013830A1

WO2023013830A1 - Vacuum circuit breaker

Info

Publication number: WO2023013830A1
Application number: PCT/KR2022/000077
Authority: WO
Inventors: 서민규
Original assignee: 엘에스일렉트릭 (주)
Priority date: 2021-08-06
Filing date: 2022-01-04
Publication date: 2023-02-09
Also published as: KR20230021975A; CN117693799A; KR102608744B1

Abstract

The present invention relates to a vacuum circuit breaker, and provides a vacuum circuit breaker comprising: a mechanism assembly for generating an operation load by means of a signal; a shaft assembly, which rotates while the operation load generated from the mechanism assembly is transferred thereto; a link unit, which moves in the vertical direction according to the rotation of the shaft assembly; and an operation detection sensor unit which is provided at one side of the shaft assembly and which can detect the rotation angle of the shaft assembly.

Description

vacuum breaker

The present invention relates to a vacuum circuit breaker, and more particularly, to a vacuum circuit breaker capable of monitoring in real time the operating characteristics of the vacuum circuit breaker responsible for power transportation control and power system protection in a power system.

In general, a switchboard is a device that is installed in a power plant, substation, or electrical facility, and monitors, controls, and protects an electrical system.

Various electric devices such as vacuum breakers, safety devices, gauges, indicators, relays, etc. are arranged in the switchboard for the operation or control of power plants and substations, and the operation of motors, enabling opening and closing of circuits and control of devices. can be done easily

The vacuum circuit breaker is stored and used inside the vacuum circuit breaker room of the switchboard. In the vacuum circuit breaker, a terminal provided in the vacuum circuit breaker is connected to a terminal provided on a rear surface of a switchboard, so that current can be supplied to a load side through a main circuit of the vacuum circuit breaker.

At this time, in order for the vacuum circuit breaker to supply current to the load side through the main circuit unit, the movable contactor and the fixed contactor may contact each other to perform a connection operation. In addition, the vacuum circuit breaker can separate the movable contact and the fixed contact that have been in contact by performing a trip operation when an overload, short circuit, ground fault, etc. occurs in the process of supplying current to the load side through the main circuit unit.

In this process, the shaft assembly disposed inside the vacuum circuit breaker rotates. However, the conventional vacuum circuit breaker does not have a function of frequently monitoring the operating characteristics of the vacuum circuit breaker. That is, the user could not recognize a change in operating characteristics due to a failure or deterioration inside the vacuum circuit breaker. Accordingly, it was impossible for the user to determine voluntary maintenance.

When the operating characteristics of the vacuum circuit breaker exceed the limit in the normal operating state range, the vacuum circuit breaker causes short-time performance degradation, short circuit performance degradation, and current conduction performance degradation. Due to this, an accident of the vacuum circuit breaker may occur, and in particular, when a normal breaking operation cannot be performed during the breaking operation, there is a problem that may cause a serious accident.

Therefore, the present invention has been made to solve the above problems, and the operation characteristics of the vacuum circuit breaker are monitored every time the vacuum circuit breaker is operated so that the user can analyze and determine the current state and maintenance period of the vacuum circuit breaker. It is a technical challenge to provide a vacuum circuit breaker capable of

In order to achieve the above object, the present invention provides a mechanism assembly that generates an operating load by a signal, a shaft assembly in which the operating load generated from the mechanism assembly is transmitted and rotated, and a shaft assembly that moves in a vertical direction as the shaft assembly rotates. A vacuum circuit breaker includes a link unit and a motion detection sensor unit provided on one side of the shaft assembly and capable of detecting rotational information of the shaft assembly.

In addition, the shaft assembly includes a shaft axis disposed through a plurality of links, a connecting insert insertion portion disposed at one end of the shaft axis and connected to the motion detection sensor unit, and a plurality of shafts disposed spaced apart from each other on the shaft axis. You can include linking links.

In addition, the motion detection sensor unit is connected to the connection insert insertion unit and detects rotation information of the shaft axis, a motion detection sensor body, a bracket connected to the motion detection sensor body and coupled to the outer surface of the vacuum circuit breaker, the It is connected to the bracket and may include an EMC part including EMC (Electromagnetic Compatibility) inside.

In addition, the motion detecting sensor body may be configured to measure an output voltage according to time while the shaft shaft is rotated.

In addition, the motion detection sensor unit may further include a wire connected to the other end of the EMC unit, and a connection terminal disposed at an end of the wire.

In addition, the motion detection sensor unit may further include a wireless module connected to the connection terminal and capable of communicating with an external terminal.

In addition, a concave groove having an inner surface formed of a flat surface and a curved surface is formed inside the motion detection sensor body, and the motion detection sensor unit has one side coupled to the connecting insert insertion part and the other side inserted into the concave groove. It may further include inserts.

In addition, the insert includes a wing portion extending in both directions, and a protruding portion protruding from the front surface of the wing portion and insertable into the concave groove, wherein the protruding portion includes a flat portion corresponding to a plane of the concave groove; and a curved portion corresponding to the curved surface of the concave groove.

In addition, an insertion groove formed concavely is formed in the connecting insert insertion portion so that the wings can be inserted, protrusions protrude from both sides of the insertion groove, and a through hole into which a coupling member can be inserted is formed at the center of the insertion groove. It can be.

As described above, according to one embodiment of the present invention, the motion detection sensor unit frequently monitors the operation state of the vacuum circuit breaker and at the same time digitizes the characteristics generated during operation of the vacuum circuit breaker, thereby analyzing the current state of the vacuum circuit breaker and performing maintenance and repair. It has the advantage of being able to determine whether it is necessary.

Further, according to an embodiment of the present invention, the protrusion includes a flat portion and a curved portion, and the concave groove of the motion detection sensor body includes a flat portion and a curved surface corresponding to the flat portion and the curved portion of the protrusion, so that the protrusion includes a concave groove. can be inserted without gap. Accordingly, the rotational characteristics of the shaft axis can be transmitted to the motion detection sensor body through the concave groove of the motion detection sensor body.

In the vacuum circuit breaker according to an embodiment of the present invention, since the motion sensor unit includes the EMC unit, it is possible to prevent electromagnetic interference from other devices inside the vacuum circuit breaker. In addition, the motion detection sensor unit can prevent the voltage detected by the motion detection sensor body from being affected by electromagnetic interference from other devices inside the vacuum circuit breaker through EMC. That is, the motion detecting sensor body may remove other noises that may affect numerical values such as an output voltage value in the process of rotating the shaft axis.

1 is a side view of a vacuum circuit breaker from which an outer case is removed according to an embodiment of the present invention.

FIG. 2 is a view showing the vacuum circuit breaker of FIG. 1 from the opposite side.

3 is a perspective view illustrating the vacuum circuit breaker of FIG. 1;

4 is a perspective view of the vacuum circuit breaker of FIG. 3 viewed from another direction.

FIG. 5 is a front view of the vacuum circuit breaker of FIG. 1 from which a part of the outer case is removed, viewed from the front.

6 is a perspective view showing a mechanism assembly according to an embodiment of the present invention.

7 is a perspective view showing a shaft assembly according to an embodiment of the present invention.

8 is a perspective view illustrating a motion detection sensor unit according to an embodiment of the present invention.

9 is a perspective view showing an insert according to an embodiment of the present invention.

10 is a partially exploded perspective view for explaining the shaft assembly and motion detection sensor of FIG. 4;

11 is a view for explaining how the shaft assembly of FIG. 10, the insert, and the body of the motion detection sensor are coupled.

12 is a time-current graph detected by the motion detection sensor unit when the vacuum circuit breaker is tripped according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily practice the present invention.

In the following description, descriptions of some components may be omitted to clarify the characteristics of the present invention.

The term "conductivity" used in the following description means that a current or an electrical signal is transmitted between one or more members.

The term "distribution board" used in the following description refers to a device that regularly inserts and manages switches, instruments, relays, and the like. On the front of the switchboard, a control lever for opening and closing the vacuum breaker of the high-voltage main circuit, an air switch (air vacuum breaker) of the low-voltage main circuit, a voltmeter, an ammeter, a wattmeter, an integrated wattmeter, an eddy current relay, etc. can be arranged.

The term "vacuum circuit breaker" used in the following description means a vacuum circuit breaker made to cut off the current of the power supply line in a closed space in a vacuum state. It is assumed that each configuration described below is applied to a vacuum circuit breaker.

However, each configuration described below may be applied to an air circuit breaker, a compressed air circuit breaker, a gas circuit breaker, an oil circuit breaker, and the like.

1 is a side view of a vacuum circuit breaker from which an outer case is removed according to an embodiment of the present invention. FIG. 2 is a view showing the vacuum circuit breaker of FIG. 1 from the opposite side. 3 is a perspective view illustrating the vacuum circuit breaker of FIG. 1; 4 is a perspective view of the vacuum circuit breaker of FIG. 3 viewed from another direction. FIG. 5 is a front view of the vacuum circuit breaker of FIG. 1 from which a part of the outer case is removed, viewed from the front.

A vacuum circuit breaker 1000 according to an embodiment of the present invention may include a mechanism assembly 100, a shaft assembly 200, a link unit 300, and a motion detection sensor unit 400.

The vacuum circuit breaker 1000 may be disposed inside the switchboard. The vacuum circuit breaker 1000 includes connection terminals 20 that can be connected to external terminals, and can be drawn in and out of the switchboard case 10 . The vacuum circuit breaker 20 can be drawn in and out of the switchboard case by using the vacuum circuit breaker moving unit 30 . Looking at the internal components 10 from which a part of the outer case of the vacuum circuit breaker 1000 is removed is as shown in FIG. 1 .

The mechanism assembly 100 may generate an operating load by a signal. Specifically, the mechanism assembly 100 may generate an operating load according to a trip signal or a connection signal.

In addition, the operating load generated during operation by the signal is transferred to the shaft assembly 200 through an internal structure.

The shaft assembly 200 is rotated by transmitting the operation load generated from the mechanism assembly 100 .

Specifically, the operating load generated from the mechanism assembly 100 is transmitted to the shaft assembly 200, and the shaft axis 210 of the shaft assembly 200 is rotated. Accordingly, a plurality of connection links fixed to the shaft axis 210 may be rotated.

The link part 300 moves in the vertical direction as the shaft assembly 200 rotates.

Specifically, referring to FIG. 1 and the like, the link unit 300 may include a first link 310 connected to the shaft assembly 200 and a second link 320 connected to the first link 310. there is.

When the shaft assembly 200 rotates in one direction, the link unit 300 may rise in a vertical direction. Also, when the shaft assembly 200 rotates in one direction, the link unit 300 may descend in a vertical direction.

In addition, the vacuum interrupter 1000 according to an embodiment of the present invention may include a vacuum interrupter 500 (VI, Vacuum Interrupter).

The vacuum interrupter 500 may include a fixed contact 510, a movable contact 520, a push rod 530 and a connecting rod 540.

At this time, when the shaft assembly 200 described above rotates in one direction and the link unit 300 rises in the vertical direction, the connecting rod 540 rises and the fixed contact 510 and the movable contact 520 come into contact with each other ( Closed) can be. Accordingly, the fixed contact 510 and the movable contact 520 are energized with each other.

And, when the shaft assembly 200 rotates in the other direction and the link part 300 descends in the vertical direction, the connecting rod 540 descends so that the fixed contact 510 and the movable contact 520 can be spaced apart from each other. there is.

The operation of the shaft assembly 200 and the resulting energization and tripping operations will be described as follows.

For example, when the shaft assembly 200 connects, the second connection link 240 connected to the shaft assembly 200 moves upward. Accordingly, the first link 310 connected to the second connection link 240 rises. As the first link 310 rises, the second link 320 connected to the first link 310 rises. Accordingly, the connecting rod 540 connected to the second link 320 is raised. Then, as the connection rod 540 rises, the push rod 530 connected to the connection rod 540 rises. As the push rod 530 rises, the fixed contact 510 and the movable contact 520 inside the vacuum interrupter 500 may be connected to each other.

Meanwhile, when the shaft assembly 200 performs the tripping operation, the operation opposite to the above-described operation may be performed. The second connecting link 240 connected to the shaft assembly 200 is moved downward. Then, the first link 310 descends. As the first link 310 descends, the second link 320 connected to the first link 310 descends. Accordingly, the connecting rod 540 connected to the second link 320 is lowered. And, as the connection rod 540 descends, the push rod 530 connected to the connection rod 540 descends. As the push rod 530 descends, the fixed contact 510 and the movable contact 520 inside the vacuum interrupter 500 may be spaced apart (tripped) from each other.

The motion detection sensor unit 400 is provided on one side of the shaft assembly 200 . And, the motion detection sensor unit 400 is made capable of detecting rotational information of the shaft assembly 200 .

Referring to FIG. 2 , the motion detection sensor unit 400 is provided on one side of the shaft assembly 200 . And, the motion detection sensor unit 400 is fixed to the outer surface of the vacuum circuit breaker 1000.

When the rotation of the shaft assembly 200 occurs, the motion detection sensor unit 400 detects the rotation of the shaft assembly 200 . At this time, the operation characteristics of the shaft assembly 200 may be grasped by measuring the time required for the shaft assembly 200 to rotate and the output voltage value related to the shaft assembly 200 .

6 is a perspective view showing a mechanism assembly 100 according to an embodiment of the present invention. 7 is a perspective view showing a shaft assembly 200 according to an embodiment of the present invention. 8 is a perspective view showing a motion detection sensor unit 400 according to an embodiment of the present invention. 9 is a perspective view showing an insert 450 according to an embodiment of the present invention. FIG. 10 is a partially exploded perspective view for explaining the shaft assembly 200 and the motion detection sensor unit 400 of FIG. 4 . 11 is a view for explaining how the shaft assembly 200, the insert 450, and the motion detection sensor body 410 of FIG. 10 are coupled. 12 is a time-current graph detected by the motion detection sensor unit 400 when the vacuum circuit breaker 1000 according to an embodiment of the present invention is tripped.

Mechanism assembly 100 according to an embodiment of the present invention may include a handle 110, a rotation unit 120, a rotation shaft pin 130, and an internal connection link 140.

Specifically, referring to FIG. 6 , the handle 110 may be configured to operate the mechanism assembly 100 when moving. Alternatively, when the mechanism assembly 100 is operated, the handle 110 may be moved.

The rotating part 120 is connected to the handle 110 . Therefore, when the handle 110 is moved, the rotating part 120 rotates. As the rotation unit 120 rotates, the rotation shaft pin 130 inserted into the rotation unit 120 may be rotated. As the rotary shaft pin 130 rotates, the internal connection link 140 connected to the rotary shaft pin 130 may be moved.

When the inner connection link 140 is moved, the first connection link 230, one end of which is connected to the inner connection link 140 and the other end of which is connected to the shaft axis 210, may be moved.

Therefore, when the mechanism assembly 100 operates through the above-described operation, the inner connecting link 140 rotates, and thus the first connecting link 230 rotates, and the shaft axis 210 rotates accordingly. do.

The shaft assembly 200 according to an embodiment of the present invention may include a shaft axis 210, a connection insert insertion portion 220, and a plurality of connection links.

The shaft axis 210 is disposed passing through a plurality of links.

Specifically, referring to FIG. 7 , the shaft axis 210 is formed long, and a plurality of links are penetrated and fixed. Accordingly, when the shaft axis 210 rotates, a plurality of links rotate simultaneously.

As described above, when the mechanism assembly 100 rotates to operate, the link connecting the mechanism assembly 100 and the shaft shaft 210 rotates. As the link connecting the mechanism assembly 100 and the shaft shaft 210 rotates, the shaft shaft 210 may rotate.

As the shaft axis 210 rotates, other links connected to the shaft axis 210 also rotate simultaneously. Accordingly, the movable contactor 520 and the fixed contactor 510 of the vacuum interrupter 500 may be spaced apart (blocked) or contacted (energized) with each other.

A plurality of connecting links are disposed spaced apart from each other on the shaft axis (210).

Specifically, the shaft assembly 200 may include a first connection link 230 , a second connection link 240 , a third connection link 250 and a fourth connection link 260 . In addition, other connection links may be further included. As the shaft axis 210 rotates, the above-described first connecting link 230 to fourth connecting link 260 may rotate together.

The first connection link 230 may connect the shaft assembly 200 and the mechanism assembly 100 to each other. Accordingly, when the mechanism assembly 100 is operated, the first connection link 230 rotates so that the shaft axis 210 can rotate.

The second connection link 240 may connect the shaft assembly 200 and the link unit 300 . Accordingly, when the shaft axis 210 rotates, the second connection link 240 moves upward or downward, and accordingly, the link unit 300 may move upward or downward in a vertical direction.

The third connection link 250 and the fourth connection link 260 may be connected to other elements in the vacuum circuit breaker 1000 . The third connecting link 250 and the fourth connecting link 260 are connected to other components in the vacuum circuit breaker 1000 to control the operation of the other components, or the shaft assembly 200 is fixed within the vacuum circuit breaker 1000. and can play a supporting role.

The motion detection sensor unit 400 may include a motion detection sensor body 410 , a bracket 420 and an EMC unit 430 .

Referring to FIG. 8 , the motion detection sensor body 410 is connected to the connecting insert insert 220 and detects rotation of the shaft shaft 210 .

Specifically, referring to FIG. 11 , the insert 450 is inserted into the connection insert insertion portion 220 disposed at the end of the shaft axis 210 . Also, the insert 450 may be inserted into the concave groove 410a formed in the motion detection sensor body 410 and rotated.

The bracket 420 is connected to the motion detection sensor body 410 and coupled to the outer surface of the vacuum circuit breaker 1000. Specifically, referring to FIG. 2 , the bracket 420 is coupled to the outer surface 12a of the vacuum circuit breaker case 12 . At this time, the bracket 420 is disposed on the side where the connecting insert insertion portion 220 of the shaft shaft 210 is disposed.

The EMC unit 430 is connected to the bracket 420 and includes electromagnetic compatibility (EMC) therein.

EMC is a configuration that does not cause electromagnetic interference to other devices and maintains original performance even when electromagnetic interference is received from other devices.

In the vacuum circuit breaker 1000 according to an embodiment of the present invention, since the motion detection sensor unit 400 includes the EMC unit 430, it is possible to prevent electromagnetic interference from other devices inside the vacuum circuit breaker 1000. there is. In addition, the motion detection sensor unit 400 can prevent the voltage sensed by the motion detection sensor body 410 from being affected by electromagnetic interference from other devices inside the vacuum circuit breaker 1000 through EMC. That is, the motion detecting sensor body 410 may remove other noises that may affect numerical values such as an output voltage value detected while the shaft shaft 210 rotates.

Meanwhile, the motion detection sensor unit 400 may further include a wire 440 and a connection terminal 445 .

The wire 440 may be connected to the other end of the EMC unit 430 . And, the connection terminal 445 is disposed at the end of the wire 440, and information about the characteristics of the vacuum circuit breaker 1000 sensed by the motion detection sensor body 410 can be transmitted to a wireless module, memory or control unit.

Meanwhile, the motion detection sensor unit 400 may further include a wireless module. The wireless module is connected to the above-described connection terminal 445 and can communicate with an external terminal. Accordingly, the wireless module may transmit information obtained from the motion detection sensor unit 400 to an externally built server or user terminal.

A concave groove 410a having an inner surface formed of a flat surface 411 and a curved surface 412 may be formed inside the motion detection sensor body 410 .

Specifically, referring to FIG. 11 , a concave groove 410a having an inner surface in which a flat surface 411 and a curved surface 412 are alternately connected to each other may be formed inside the motion detection sensor body 410 . The flat surface 411 and the curved surface 412 of the concave groove 410a may be formed to correspond to the flat part 453 and the curved part 455 among the protruding parts 454 of the insert 450 . Through this, the insert 450 can be easily inserted into the concave groove 410a. In addition, while the insert 450 rotates, the distance from the inner surface of the concave groove 410a is reduced, so that the amount of rotation of the insert 450 can be accurately grasped from the concave groove 410a.

On the other hand, the part forming the concave groove 410a of the motion detection sensor body 410 may be rotated. Accordingly, as the insert 450 rotates, the concave groove 410a also rotates correspondingly thereto. The motion detection sensor main body 410 may determine the amount of rotation of the insert 450 through rotation of the portion forming the concave groove 410a.

In addition, the motion detection sensor unit 400 may further include an insert 450 having one side coupled to the connection insert insertion unit 220 and the other side inserted into the concave groove 410a.

Insert 450 may include wings 452 and protrusions 454 .

The wings 452 may be formed to extend long to both sides in one direction. That is, it may be formed extending in both directions around the protrusion 454 . The wing portion 452 is inserted into the insertion groove 222 formed at one end of the shaft shaft 210. Accordingly, when the shaft shaft 210 is rotated, the connection insert insertion portion 220 at the end of the shaft shaft 210 is rotated. Also, as the connecting insert inserting portion 220 is rotated, the insertion groove 222 of the connecting insert inserting portion 220 is also rotated. Accordingly, the insert 450 is rotated, and the rotation of the insert 450 is transmitted to the concave groove 410a of the motion sensor body 410 so that the motion sensor can detect the rotation of the shaft shaft 210. there is.

The protruding portion 454 protrudes from the front of the wing portion 452 . The protruding portion 454 includes a flat portion 453 corresponding to the flat surface 411 of the concave groove 410a and a curved portion 455 corresponding to the curved surface 412 of the concave groove 410a. Accordingly, the protrusion 454 may be inserted into the concave groove 410a of the motion detection sensor body 410 described above.

According to one embodiment of the present invention, the protruding portion 454 includes a flat portion 453 and a curved portion 455, and the concave groove 410a of the motion detection sensor body is the flat portion 453 and By including the flat surface 411 and the curved surface 412 corresponding to the curved portion 455, the protruding portion 454 can be inserted into the concave groove 410a without any clearance. Accordingly, the rotational characteristics of the shaft axis 210 can be transmitted to the motion detection sensor body 410 through the concave groove 410a of the motion detection sensor body 410 .

The connecting insert insert 220 may be disposed at one end of the shaft shaft 210 and connected to the motion detection sensor unit 400 . An insertion groove 222 made concave so that the wing portion 452 can be inserted may be formed in the connection insert insertion portion 220 .

Referring to Figure 11, the insertion groove 222 is formed long in one direction in a shape corresponding to the wing portion (452). At this time, the wing portion 452 may be inserted into the insertion groove 222 without protruding to the outer diameter of the shaft shaft 210 .

Protrusions 221 for gripping the wing portions 452 of the insert 450 may protrude from both sides of the insertion groove 222 . Through this, as the shaft axis 210 rotates, the protrusion 221 presses the wing portion 452 of the insert 450 . Accordingly, the insert 450 may rotate.

As the insert 450 rotates, the member of the rotating part 120 surrounding the concave groove 410a of the motion detection sensor body 410 into which the insert 450 is inserted may rotate. Accordingly, rotation information of the shaft axis 210 may be recognized through the motion detection sensor unit 400 .

A through hole 223 into which the coupling member 460 can be inserted may be formed at the center of the insertion groove 222 . Also, a through hole 454a may be formed in the center of the protrusion 454 of the insert 450 .

The coupling member 460 may include a rotation preventing member 461 , a pad 462 , a bolt 463 and a washer 464 .

The pad 462 and the anti-rotation member 461 protect the motion sensor body 410 so that the motion sensor body 410 is not rotated when the motion sensor body 410 is pressed in the direction of the shaft axis 210. It serves to fix the outer surface of the vacuum circuit breaker (1000). Through this, as the shaft shaft 210 is rotated, even if the inside of the concave groove 410a is rotated, rotation of the motion detection sensor body 410 can be prevented.

The bolt 463 passes through the through hole 454a of the insert 450 and is coupled to the connecting insert insertion portion 220 of the shaft shaft 210, thereby firmly attaching the insert 450 to the connecting insert insertion portion 220. can be conjoined.

The motion detection sensor unit 400 may measure voltage according to time while the shaft shaft 210 is rotated.

Specifically, referring to FIG. 12, it is as follows.

For example, section A shows a state before the fixed contact 510 and the movable contact 520 of the vacuum interrupter 500 come into contact with each other. That is, it is not in an energized state.

At this time, the voltage means an output voltage value of the motion detection sensor unit 400 that is changed according to the rotation of the shaft shaft 210 . That is, as the shaft shaft 210 rotates, the output voltage value sensed by the motion detection sensor unit 400 may change.

Section B is a section in which the movable contactor 520 moves toward the fixed contactor 510 as the shaft shaft 210 rotates. At this time, as the shaft shaft 210 rotates, the output voltage value of the motion detection sensor unit 400 starts to increase.

Section C means the initial rotation of the shaft shaft 210. At this time, the slope of the rise of the voltage increases. That is, the increase in the output voltage value of the motion detection sensor unit 400 may increase more rapidly with the passage of time.

Section D is the middle period of rotation of the shaft shaft 210. Section D may change in a direction in which the rising slope of the voltage increases and then gradually decreases. That is, section D may be an inflection point of a voltage rising slope.

Section E is the end of rotation of the shaft shaft 210. In the period E, the slope of the voltage rise may gradually decrease. However, the voltage continues to rise.

Section F is the end section of rotation of the shaft shaft 210. Over-rotation may occur in section F. Specifically, physical resistance may occur in a process in which the fixed contactor 510 and the movable contactor 520 contact each other. Therefore, in order for the fixed contact 510 and the movable contact 520 to contact stably, a larger rotational force of the shaft shaft 210 may be required. Accordingly, the output voltage value sensed by the motion detection sensor unit 400 may be higher.

Section G is a section after the rotation of the shaft shaft 210 is finished. In this case, a voltage value that is stable and does not change in voltage may be output.

In the above process, the motion detection sensor unit 400 may measure and analyze the time required to reach section F from section B and the difference between the voltage in section A and the voltage in section G.

In addition, the motion detection sensor unit 400 may measure and analyze the difference in time and voltage before and after the trip operation even when the trip operation occurs in the vacuum circuit breaker 1000 .

The motion detection sensor unit 400 of the vacuum circuit breaker 1000 according to an embodiment of the present invention can continuously monitor the rotation time of the shaft assembly 200, that is, the shaft shaft 210, and the voltage output at this time. . Therefore, according to one embodiment of the present invention, the motion detection sensor unit 400 monitors the operating state of the vacuum circuit breaker 1000 from time to time and at the same time digitizes the characteristics generated during operation of the vacuum circuit breaker 1000, so that the vacuum circuit breaker ( 1000) has the advantage of being able to analyze the current state and determine whether maintenance is necessary.

Meanwhile, the vacuum circuit breaker 1000 of the present invention may further include a controller (not shown). Information monitored by the motion detection sensor unit 400 may be transmitted to the controller.

The control unit analyzes the case where the rotation time of the shaft shaft 210 for the trip operation or the connection operation becomes longer or shorter, or the output voltage value output according to the rotation of the shaft shaft 210 is out of the normal state, and sends a notification. can do.

The user may check whether or not repair of the vacuum circuit breaker 1000 is necessary based on the data sensed by the motion detection sensor unit 400 .

Since the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited to the above-described embodiments, and various modifications and modifications of those skilled in the art using the basic concept of the present invention defined in the following claims Modified forms are also included in the scope of the present invention.

[Description of code]

1000 Vacuum Breaker

10 Internal Components of Vacuum Circuit Breaker

12 Vacuum breaker outer case

12a Vacuum circuit breaker outer case

20 connection terminal

30 vacuum circuit breaker moving part

100 mechanism assembly

110 handle

120 rotating part

130 rotary axis pin

140 interconnection links

200 shaft assembly

210 shaft axis

220 connection insert insert

221 projection

222 insertion groove

223 through hole

230 first connecting link

240 second connecting link

250 third connecting link

260 fourth connecting link

300 link section

310 first link

320 second link

400 motion detection sensor unit

410 motion detection sensor body

410a concave groove

411 flat

412 curved surface

420 bracket

430 EMC part

440 wire

445 connection terminal

450 insert

452 wings

453 flat part

454 Projection

454a through hole

455 curved part

460 coupling member

461 anti-rotation member

462 pad

463 volts

464 washer

500 vacuum interrupter

510 fixed contactor

520 movable contactor

530 pushrod

540 connecting rod

Claims

a mechanism assembly generating an operating load by means of a signal;

a shaft assembly that is rotated by transmitting a motion load generated from the mechanism assembly;

a link portion moved in a vertical direction as the shaft assembly rotates; and

It is provided on one side of the shaft assembly and includes a motion detection sensor unit configured to detect rotation information of the shaft assembly.

vacuum breaker.
According to claim 1,

The shaft assembly,

A shaft axis passing through a plurality of links and disposed;

a connection insert insertion unit disposed at one end of the shaft axis and connected to the motion detection sensor unit;

Including a plurality of connecting links disposed spaced apart from each other on the shaft axis,

vacuum breaker.
According to claim 2,

The motion detection sensor unit,

a motion detection sensor main body that is connected to the connection insert insertion part and senses rotational information of the shaft axis;

a bracket connected to the motion detection sensor body and coupled to an outer surface of the vacuum circuit breaker;

Including an EMC unit connected to the bracket and including EMC (Electromagnetic Compatibility) therein,

vacuum breaker.
According to claim 3,

The motion detection sensor body,

Made capable of measuring the output voltage over time while the shaft axis is rotating,

vacuum breaker.
According to claim 3,

The motion detection sensor unit,

a wire connected to the other end of the EMC unit; and

Further comprising a connection terminal disposed at the end of the wire,

vacuum breaker.
According to claim 5,

The motion detection sensor unit,

Further comprising a wireless module connected to the connection terminal and capable of communicating with an external terminal,

vacuum breaker.
According to claim 3,

Inside the motion detection sensor body,

A concave groove is formed with a flat and curved inner surface,

The motion detection sensor unit,

One side is coupled to the connecting insert insertion portion, and the other side further comprises an insert inserted into the concave groove,

vacuum breaker.
According to claim 7,

The insert,

Wings extending in both directions; and

It protrudes to the front of the wing and includes a protrusion that can be inserted into the concave groove,

the protrusion,

Including a plane portion corresponding to the plane of the concave groove, and a curved portion corresponding to the curved surface of the concave groove,

vacuum breaker.
According to claim 8,

In the connecting insert insertion portion,

An insertion groove formed concavely is formed so that the wing portion can be inserted,

Protrusions protrude from both sides of the insertion groove,

At the center of the insertion groove, a through hole into which a coupling member can be inserted is formed.

vacuum breaker.