KR200412844Y1 - Operation equipment for gas-insulated switch-gear - Google Patents

Abstract

The present invention relates to an open / close operation device for a gas insulated switchgear whose structure is improved to prevent overrun operation of a gear while preventing a wrong operation.

The configuration includes a drive motor that is selectively housed in a housing and is operated in a forward / reverse rotation as the external power is supplied, a drive gear provided at the shaft end of the drive motor and interlocked integrally with the drive gear, and a flat gear coupled with the drive gear. The main switch side main shaft in which the gear is provided at one end, and the spur gear which is positioned so as to be spaced apart from the lower side of the main switch side main shaft, and the spur gear which is interlocked with the ground switch side spur gear are interlocked. And the rotational force of the main shaft of the disconnector side is converted into an up and down movement force, and the up and down movement force is transmitted to the main lever side for manipulating the opening and the opening of the movable conductor in the tank to control the rotation operation of the main lever. And a pinion gear type provided at the other end of the rotational force transmission means and the ground switch side main shaft and disconnector side main shaft, respectively. It has a gear that is geared to each of the fixed gear and is composed of a first and second manual operation shaft for interlocking the main switch side main shaft and the disconnecting main side shaft by manual operation.

According to the present invention, since the operation of the ground switch side and the disconnector side is made separately using a plurality of manual control shafts and the main shaft, not only the operation of the ground and the disconnector can be prevented at the same time, By limiting the rotation range of the control rod and the main lever to determine the closing and opening has a useful effect that can suppress the overrun operation.

Description

Switchgear actuator for gas insulated switchgear {OPERATION EQUIPMENT FOR GAS-INSULATED SWITCH-GEAR}

1 is a perspective view showing the opening and closing manipulator for gas insulated switchgear according to the present invention.

Figure 2 is an exploded perspective view of the main part of the present invention.

3 is a front view of the present invention.

Figure 4 is a perspective view of the present invention cam plate from one side.

Figure 5 is a perspective view of the present invention cam plate from the other side.

Figure 6a, 6b, 6c is a front view showing a state in which the main lever and the operating rod is rotated as the cam plate of the present invention is moved up and down along the path of the guide plate.

Figure 7a, 7b, 7c is a front view showing an operating state in which the manual handle entry port of the front cover is selectively opened and closed in accordance with the rotation operation of the invention open and close cam.

Explanation of symbols on the main parts of the drawings

110 housing 120 front cover

130: case 210: drive motor

215: drive gear 310: ground switch side main shaft

312: Gear (of main shaft of earthing switch)

314: Fixed gear (of main shaft of earthing switch)

320: main shaft of disconnector

322: Gear (of main shaft on disconnector side)

324: Fixed gear (of main shaft on disconnector side)

410: cam guide 412: fixed roller

420: cam plate 422: guide

424: locking projection 446: guide projection

430: guide plate 432: long hole

434 guide hole 440 main lever

442: operating rod 445: lever shaft

510, 520: first and second manual operation shaft

610: front cover 612: connector

620: stopper 620a: connection protrusion

622: connecting shaft

710,720: first and second relay switch

The present invention relates to an open / close operation device for gas insulated switchgear, and in particular, an operation method of a three-stage open / close control device for opening and closing operation of a track is easily made by using a cam structure having a plurality of axes and a plate structure instead of a single axis. A switchgear for gas insulated switchgear.

In general, electricity having a voltage of about 20,000 V in a power plant is boosted to an ultra-high voltage suitable for power transmission, and transmitted to a primary substation, where the supplied power drops to 22,900 V to the secondary substation and each customer. Will be supplied.

The power supplied from the primary substation is supplied to the receiving facility of each customer through a distribution system composed of overhead distribution lines and underground distribution lines, and is supplied to the low voltage consumer side through the special high pressure consumer, the high pressure consumer, and various outdoor transformers.

Existing gas insulated switchgear maintains breaker (CB) and gas insulated switchgear that plays a main role in blocking current in case of accident such as grounding or short circuit in load / transmission system or electric circuit. Grounding switchgear to remove residual voltage and current remaining in the switchgear for inspection, as well as the excitation current of the no-load transformer and the line or bus Devices such as disconnectors, which should have the capability of opening or closing charge current or loop current, are provided.

The disconnector and the grounding device used in the inspection or testing of the line have a three-stage (closed, open, and grounded) opening and closing structure, and the manipulator having a three-stage position is rotated in the forward or reverse direction by receiving power from the manipulator case Motor, the worm gear engaged with the reducer, the Geneva gear driven gear co-rotated according to the rotation of the worm gear, and the Geneva gear driven gear. It is known to consist of Geneva gear driven gears which rotate intermittently.

The driven gear is rotated only when the pin is installed in the gear groove of the driven gear so that the zener gear is protruded into the driven gear as is known in its characteristics.

However, the existing three-stage position manipulator may be misoperated if the user makes a wrong position determination during maintenance, which may cause a safety accident.

In addition, in a structure in which Geneva gears are connected by a chain, the chain sprocket may be easily broken.

In addition, there is a risk that the Geneva gear may over-run after the operations of the stages are performed in the three-stage position, which may cause a malfunction of the device or a safety accident during operation.

The present invention has been proposed to solve the above problems in consideration of the above-mentioned problems, and its purpose is to prevent the risk of safety accidents due to misoperation due to user's position determination error, and to avoid the use of Geneva gears. The present invention provides a switchgear for a gas insulated switchgear having an improved structure so that the operation is not overrun.

The present invention for achieving the above object is a drive motor provided with a drive gear which is provided in the interior of the housing and the bidirectional rotation and interlocked with the external power supply for the input and opening operation of the grounding switch and disconnecting unit;

A ground switch-side main shaft having a gear coupled to the drive gear at one end thereof and interlocked with the pinion gear;

A disconnector side main shaft having gears coupled to the gear of the ground switch side main shaft and interlocked and rotated at an end thereof;

Transfers the rotational force to control the rotational motion of the main lever by converting the rotational force of the main shaft of the disconnector side into an up and down movement force and transferring the up and down movement force to the main lever side for manipulating the opening and closing of the movable conductor. Sudan,

A plurality of manual gears having gears coupled to gears respectively provided at the other ends of the ground switch-side main shaft and the disconnector-side main shaft, respectively, and interlocking the ground switch-side main shaft and the disconnector-side main shaft by manual operation. It is characterized by including an operation shaft.

In another feature of the present invention, the rotational force transmission means is coupled to the close contact with the gear outside of the main shaft side of the disconnector and the cam guide is formed so as to protrude a plurality of fixed rollers on the outer surface,

A wing-shaped guide piece is formed on one side to guide the fixed roller while rotating along one side, and partially accommodated in a sliding hole formed at one side of the main lever at a position spaced apart from the plurality of guide protrusions and the guide protrusions on the other side. Cam plate and the engaging projection formed to interfere,

Part of the guide projection of the cam plate is accommodated to one side to form a long hole so that the rotation is interfered, and a through-hole is formed in the center is coupled through the lever shaft coupled to one side of the main lever is formed on the other side of the engaging projection It is to have a guide plate which is formed a guide hole is accommodated.

As another feature of the present invention, there is provided a limiting means for limiting the operation of one of the ground switch and the disconnecting unit during the operation of the plurality of manual operation shaft,

The limiting means and the case is provided on one side of the housing;

A front cover provided at the front of the case and having a manual handle entry port for manipulation of the manual manipulation shafts;

It is rotatably provided on the front cover and is provided with an opening and closing cam to rotate in conjunction with the rotary unit to selectively open and close the manual handle entry port during the rotation operation.

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

1 to 7, the opening and closing manipulator for the gas insulated switchgear according to the present invention, the configuration is accommodated in the housing 110 and the drive motor 210 is selectively forward, reverse rotation operation as the external power is supplied ), A grounding gear side having a drive gear 215 provided at the shaft end of the drive motor 210 and integrally rotating in rotation and a spur gear 312 geared to the drive gear 215 at one end thereof. The main shaft 310 and the disconnecting gear side which is provided to be spaced apart from the lower side of the ground switch side main shaft 310, and the spur gear 322 which is geared and interlocked with the ground switch side spur gear 312 is interlocked. The rotational force of the main shaft 320 and the main shaft 320 of the disconnector side is converted into an up and down movement force, and operation of the input and opening of a movable conductor (not shown) in which the up and down movement force is located in the tank is performed. To the main lever 440, the main lever Rotation force transmission means for controlling the rotation operation of the 440, and pinion gear-type fixed gears 314 and 324 provided at the other end of the ground switch side main shaft 310 and the disconnecting side main shaft 320, respectively. And first and second manual operation shafts 510 which have gears 515 and 525 which are geared to each other, and which interlock and rotate the ground switch side main shaft 310 and the disconnector side main shaft 320 by manual operation. 520).

In more detail, the rotational force transmission means is coupled to the outer side of the disconnector side main shaft 320, the interlocking rotation and the disk-shaped cam guide 410 is formed so as to project a plurality of fixed rollers 412 on the outer surface Wing-shaped guide pieces 422 are formed so that the fixing roller 412 is guided while rotating along one side, and a plurality of guide protrusions 426 and the guide protrusions 426 on the other side. Cam plate 420 having a locking projection 424 is formed in the spaced apart position and partly accommodated in the sliding hole 440a formed on one side of the main lever 440, and a portion of the guide projection 426 on one side The long hole 432 is formed to be accommodated so as to interfere with the rotation, and a through hole 435 through which the lever shaft 445 coupled to one side of the main lever 440 is coupled to the center is formed, and the locking protrusion 424 is formed on the other side. Part of which is acceptable 434 consists of a guide plate 430 is formed.

That is, the main lever 440 has a structure in which the locking projections 424 of the cam plate 420 are accommodated on the inner circumferential surface of the sliding hole 440a so as to interfere with each other so as to rotate when the cam plate 420 moves up and down. have

In addition, the lever shaft 445 is connected to the operation rod 442 that is interlocked with the movable lever (not shown) located in the tank (not shown) in the same rotation operation of the main lever 440.

The case 130 and the front cover 120 are installed on the other side of the housing 110 so as to form one space portion, and only one of the first and second manual operation shafts 510 and 520 located in the space portion is provided. Restriction means for restricting the operation is provided to the outside of the front cover (120).

The restricting means includes two manual handle entry holes 122 and 124 so that the inside and the outside of the case 130 communicate with the front cover 120 for the operation of the first and second manual operation shafts 510 and 520. Each of which is formed and rotatably installed on the front cover 120 by a rotating part and configured as an opening / closing cam 610 for selectively blocking one or both of the manual handle entry holes 122 and 124 during the rotation operation. do.

The opening and closing cam 610 is formed in a substantially fan-shaped shape so as to selectively open and close the manual handle entry holes 122, 124 formed on the upper and lower sides of the front cover 120, respectively.

Rotating portion for selectively rotating the opening and closing cam 610, the connection hole 612 is formed in one side transverse direction of the opening and closing cam 610, the connection projection 620a slidably accommodated on the inner peripheral surface of the connection hole 612 ) Is provided with a stopper 620 protrudingly formed at one end and axially coupled to a connecting shaft 622 that can be externally manipulated at the other end.

That is, the rotating part is coupled to the other end of the stopper 620 is connected to the connecting shaft 622 is rotated and connected to the external switch is interlocked rotation, the connecting projection formed on one end of the stopper 620 opening and closing cam 610 Is accommodated so as to interfere with the connection hole 612 of the stopper 620 when the opening and closing cam 610 is configured to rotate in conjunction with.

Reference numerals "710" and "720" indicate excitation operations according to a user's operation to indicate the first and second relay switches for rotating the driving motor 210 by forward and reverse selection.

Referring to the operation of the present invention having such a configuration as follows.

The operation switch for the gas insulated switchgear according to the present invention has an operation relationship in which the ON / OFF operation of the disconnecting switch side and the grounding switch side switch are mutually opposite to each other during the electric operation, and the closing and opening of the movable conductor are determined accordingly. When the first relay switch 710 is operated, the first relay switch 710 is excited to rotate the drive motor 210 in the counterclockwise direction, and the drive gear 215 as the spur gear is counterclockwise. Rotated, the gear 312 of the ground switch side main shaft 310 engaged with the drive gear 215 is rotated in the advancing direction of the clock hands, and then meshed with the gears of the ground switch side main shaft 310. The gear 322 of the disconnector side main shaft 320 is rotated counterclockwise.

Thereafter, as the gear 322 of the disconnecting side of the main shaft 320 rotates, the cam guide 410 rotates in the same direction, and the fixed roller 412 protrudes from the outer surface of the cam guide 410. While rotating along the shape of the guide piece 422 of the cam plate 420 interferes to transmit the rotational force to the cam plate 420 side, the locking projection 424 and the guide formed on the other side of the cam plate 420 Since the projection 426 is accommodated in the guide hole 434 and the long hole 432 side of the guide plate 430, the cam plate 420 is moved upward along the hole path of the guide plate 430. .

At this time, since the locking protrusion 424 of the cam plate 420 passes through the guide hole 434 of the guide plate 430 and is accommodated in the sliding hole 440a of the main lever 440, the cam plate The main lever 440 is rotated to have an angle of closing position on the main lever 440 side while sliding upward along the inner circumferential surface of the sliding hole 440a of the main lever 440 during the upward movement of the 420.

As the main lever 440 is rotated, the operation rod 442 coupled to the lever shaft 445 rotates in coordination to drive the movable contact located in the tank to perform the OFF operation of the disconnector.

On the other hand, when the second relay switch 720 is on-operated, the driving motor 210 rotates in the advancing direction of the clock hand, and then the drive gear 215, the ground switch side main shaft 310 and the disconnecting side main Since the gears of the shaft 320 are engaged to sequentially rotate with each other, the gears of the shaft 320 rotate in opposite directions with respect to the aforementioned directions.

Subsequently, as the gear of the disconnecting-side main shaft 320 is rotated in the clockwise direction, the cam plate 420 moves downward, and the interlocking protrusion 424 interfering with each other as the cam plate 420 moves. The main lever 440 is rotated, and then the operation rod 442 is interlocked to drive the moving contact in the tank to perform the ON operation of the disconnector.

On the other hand, manual inspection is required for safety during the inspection or maintenance work of the track, and when the manual operation is performed using the manual operation shaft, the disconnector side is prevented from causing an erroneous operation in which the disconnector side and the ground switch side are operated simultaneously. And a manual operation shaft on the side of the ground switch, respectively, and to block one or both of the manual handle entry ports 122 and 124 formed on the front cover 120 according to the rotation operation of the opening and closing cam 610. It is.

Rotation operation of the opening and closing cam 610 is the stopper 620 is rotated by the operation of the connecting shaft 622, the connection projection 620a is the connection hole of the opening and closing cam 610 when the stopper 620 is rotated 612 is rotated along the inner circumferential surface to interfere with each other to rotate the opening and closing cam 610.

At least one of the upper and lower manual handle entry ports 122 and 124 is selectively opened and closed according to its shape when the opening and closing cam 610 is rotated, thereby preventing the ground side and the disconnector side from being operated at the same time. .

Therefore, in the present invention, the rotational direction of the driving motor 210 is determined according to the excitation operation of the first and second relay switches, and the main lever through the cam and the guide plate 430 according to the rotational direction of the driving motor 210. By performing the three-step operation of the (440) side, the rotation operation of the main lever 440 is limited to operate only on the hole path of the guide plate 430 to prevent the overrun operation.

In addition, the present invention constitutes a manual operation shaft on the ground side and the disconnector side, and provides a limiting means for restricting the manual operation shaft from being operated at the same time, so that the ground switch and the disconnector can be prevented from being malfunctioned in advance. do.

The present invention as described above has been improved in the structure to prevent the overrun operation of the gear while preventing misoperation, according to the present invention is a grounding switch side and disconnector using a plurality of manual operation shaft and main shaft Since the operation of the side is performed separately, it is possible not only to prevent the ground and the disconnector from being operated at the same time, but also to limit the rotation range of the operation rod and the main lever to determine the input and opening of the movable conductor in the tank, thereby suppressing the overrun operation. It has a useful effect.

In addition, since the operating rod and the main lever are rotated only within a limited rotation range according to a predetermined path of the rotational force of the main shaft, it has an excellent response and an effect of preventing component breakage.

Claims (4)

A driving motor provided inside the housing and capable of selectively rotating in both directions as the external power is supplied to the ground switch and the disconnecting device and for opening and closing the switch; A ground switch-side main shaft formed at one end thereof with gears coupled to the drive gears so as to be interlocked with each other when the drive gear is rotated; A disconnector side main shaft having gears coupled to the gear of the ground switch side main shaft and interlocked and rotated at an end thereof; Transfers the rotational force to control the rotational motion of the main lever by converting the rotational force of the main shaft of the disconnector side into an up and down movement force and transferring the up and down movement force to the main lever side for manipulating the opening and closing of the movable conductor. Sudan, A plurality of manual gears having gears coupled to gears respectively provided at the other ends of the ground switch-side main shaft and the disconnector-side main shaft, respectively, and interlocking the ground switch-side main shaft and the disconnector-side main shaft by manual operation. Opening and closing actuator for gas insulated switchgear characterized in that it comprises an operation shaft. The method of claim 1, The rotational force transmitting means is a cam guide is coupled to be in close contact with the outer gear of the main shaft side of the disconnector and is interlocked rotation is formed so as to project a plurality of fixed rollers on the outer surface; A wing-shaped guide piece is formed on one side to guide the fixed roller while rotating along one side, and partially accommodated in a sliding hole formed at one side of the main lever at a position spaced apart from the plurality of guide protrusions and the guide protrusions on the other side. Cam plate and the engaging projection formed to interfere, A guide hole of the cam plate is inserted to be accommodated at one side to form a long hole so that rotation thereof is interfered, and a through hole is formed at a center thereof, through which a lever shaft coupled to one side of the main lever is coupled. Opening and closing actuator for gas insulated switchgear comprising a guide plate formed. The method according to claim 1 or 2, Restriction means for selectively limiting the operation of one of the ground switch and the disconnecting side when the manual operation of the shaft, The limiting means and the case is provided on one side of the housing; A front cover provided at the front of the case and having a manual handle entry port for manipulation of the manual manipulation shafts; And an opening / closing cam rotatably provided on the front cover, the opening / closing cam being selectively rotated by the rotating unit to selectively open and close the manual handle entry holes during the rotation operation. The method of claim 3, wherein The rotating part is formed with a connection hole in one side of the opening and closing cam, A stopper on which one end of the connecting protrusion is slidably accommodated on the inner circumferential surface of the connecting hole and protrudes; And a coupling shaft coupled to the other end of the stopper and capable of external operation.

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