TWI775645B - Pullout device electric machine and switchgear - Google Patents

Abstract

Provided is a pullout device of an electric machine for inserting and removing an electric machine (3) from a connection port (2a) of a high voltage part (20) of a switchgear (1), the pullout device of the electric machine has: a shielding plate (5), which is electrically connected to ground and arranged between the high voltage and electric machine and has an opening (5a) corresponding to connect interface; a pair of side plates (4) supporting the shielding plate from both sides; and a pair of rails (7) that support the side plates and move it along with the shield plate in the inserting and removing direction of the electric machine; thereby, the shield plate can be moved by a simple structure, and the operator can be protected from the electric machine the high voltage part will not be touched during the inspection of the electric machine.

Description

Pull-out device and switch mechanism of motor machine

The present application relates to a pull-out device and a switch mechanism of a motor machine.

The high-voltage compartment (compartment) of the metal latching switch mechanism is composed of a circuit breaker compartment, a busbar compartment, a connection compartment, etc., and each compartment is provided with a partition, which is used to connect with other compartments. room isolation. Motor equipment such as circuit breakers, potential transformers, lightning arresters, and zero-phase voltage detection capacitors may have structures that can be pulled out for maintenance and inspection. In the inspection of the compartment in which the pull-out motor device is arranged, the motor device is pulled out from the switch mechanism using the pull-out device of the motor device and the inspection is performed. The compartment containing the pull-out motor machine is classified as a high-voltage compartment. In order to prevent the operator from electric shock during inspection, a metal partition is installed to protect the author from touching the high-voltage charging part during inspection.

In the prior art, as disclosed in, for example, Patent Document 1, a bushing is attached to a partition inside a metal latching switch mechanism, and the bushing constitutes a connection port of a motor device that can be pulled out. A shield plate for preventing electric shock during inspection is arranged in front of the metal latching switch mechanism. The shield plate ensures the withstand voltage performance of the pull-out motor device at the connection position, so it moves in conjunction with the position of the motor device. The shield plate is provided with a mechanism for driving in conjunction with the pull-out position of the motor. (prior art literature) (patent literature)

Patent Document 1: Japanese Patent Publication No. 2009-17628

(The problem to be solved by the invention)

However, in Patent Document 1, since the shield plate is provided with a mechanism for driving in conjunction with the pull-out position of the motor device, the shield plate becomes a large-sized member, and the operation force for driving the shield plate becomes large. In addition, since the shielding plate is a large-scale member, a solution for driving it smoothly so as not to tip over is required. Therefore, it is necessary to provide: a pair of guide rails individually provided on the ceiling and floor of the metal latching switch mechanism, and four rollers provided on the four corners of the upper and lower ends for smooth movement. As a result, there is a problem of increasing the number of parts in order to smoothly drive the shielding plate, which is a large component.

This case is designed to solve the above-mentioned problems. The purpose of this case is to obtain a pull-out device for a motor machine, which can be used with a simple structure to prevent the movement of the shield plate from electric shock, and can protect the operator from touching the motor machine when pulling out the motor machine during inspection. High voltage charging part. (means to solve the problem)

The pull-out device for electrical equipment of the present application is a device for carrying in and out of the electrical equipment from the connection port of the high-voltage part of the switchgear, and the pull-out device for the electrical equipment includes a shield plate electrically grounded and provided between the high-voltage part and the high-voltage part. A pair of side plates supports the shielding plate from both sides; and a pair of rails supports the side plates and makes them go to the motor together with the shielding plate. The machine moves in the carry-in and carry-out direction. (Inventive effect)

According to the present invention, a pair of rails are provided that support the shielding plate electrically grounded from both sides, and a pair of rails that support the shielding plate and move along the direction of carrying in and out of the electric machine. A simple structure can be used to prevent the movement of the shield plate from electric shock, and the pull-out device of the motor device can protect the operator from touching the high-voltage charging voltage part when the motor device is pulled out during inspection.

Implementation type 1. 1 to 4 are diagrams showing the structure of the pull-out device of the electric machine of Embodiment 1. FIG. 1 and 2 show the pull-out device in a state in which the motor machine is pulled out. FIG. 1 is a cross-sectional view showing a side view of a pull-out device of an electromechanical machine. FIG. 2 is a front view of FIG. 1 . In addition, FIG. 1 is a figure which shows the cross section AA of FIG. 2, and FIG. 2 is a figure which shows the cross section BB of FIG. In addition, in FIG.1 and FIG.2, the drawing of the drawn-out electric machine is abbreviate|omitted. In addition, FIGS. 3 and 4 show the pull-out device of the motor device in a state where the motor device is inserted into the metal latch-type switch mechanism. FIG. 3 is a cross-sectional view showing a side view of the pull-out device of the motor machine. FIG. 4 is a front view of FIG. 3 . In addition, FIG. 3 is a figure which shows the cross-section CC of FIG. 4, and FIG. 4 is a figure which shows the cross-section DD of FIG. In addition, in FIG. 3, the inserted motor apparatus is shown by a chain line, and FIG. 4 abbreviate|omits the figure of the motor apparatus.

In FIGS. 1 to 2 , the configuration of a compartment 10 of a pull-out device of a pull-out electrical machine of a metal latch-type switch mechanism 1 is shown. The compartment 10 in which the pull-out electrical machine 3 is arranged is separated from the high-voltage part 20 by a partition 11 belonging to a grounded metal. Furthermore, a pair of rails 7 are used to guide the moving in and out (insertion and extraction) operations of the floor 12 and the ceiling 13 belonging to the grounded metal and the pull-out motor device 3 . Among them, the electrical equipment 3 is, for example, a shutter, a circuit breaker, a disconnector, a current transformer, and an instrument transformer, and when the electrical equipment 3 is inserted, it passes through the connection port of the high-voltage part 20 . 2a is used to connect the connection part of the motor device 3 and the high-voltage charging part 2b, and when pulled out, the connection part of the motor device 3 and the high-voltage charging part 2b are disconnected.

In addition, the pull-out device of the motor device 3 is constituted by a pair of side plates 4 , a shield plate 5 , and a device for driving the side plate 4 and the shield plate 5 , and the pair of side plates 4 are arranged to guide the insertion and pull-out of the motor device 3 . The shielding plate 5 is arranged between the aforementioned side plates 4 on the inner side of the moving rail 7 . The side plate 4 having the side plate bottom portion 4a and the side plate support portion 4b is L-shaped when viewed from the side. Move in and out direction. Here, the rails 7 for supporting the side plate bottoms 4a and the rails 7 for carrying in and out of the motor equipment 3 are shown in common, but they may be provided separately.

The shielding plate 5 is fastened between a pair of side plate support parts 4b standing up from the side plate bottom part 4a. The shielding plate 5 may be composed of one sheet or a plurality of sheets, and the number of sheets is not particularly limited. The shielding plate 5 is arranged to have an opening portion 5a corresponding to the connection port 2a of the bushing 2 . The side plate pillar portion 4b of the side plate 4 is provided with an opening and closing plate guide rail 6, which is linked with the position of the motor device 3 and guides the opening and closing plate 61a for opening and closing the opening 5a of the shield plate 5 , 61b action. In addition, the side plate 4 is provided with opening and closing plate links 14a, 14b for driving the opening and closing plates 61a, 61b, and the opening and closing plate links 14a, 14b are connected to the connecting link 17, the The connecting link 17 is connected between the pair of side plates 4 . The opening and closing plate links 14a and 14b and the connecting link 17 constitute an opening and closing mechanism for driving the opening and closing plates 61a and 61b. As shown in FIG. 2 , the side plate support portion 4b of the side plate 4 has a frame portion 4c on the side of the partition plate 11, and the shield plate 5 is provided between the pair of frame portions 4c so as to be separated from each other by a predetermined distance. Further, the opening and closing plates 61 a and 61 b are attached so as to be movable along the opening and closing plate guide rails 6 provided in the side plate support portion 4 b so as to cover the opening portion 5 a which does not have the shield plate 5 .

In the state where the motor device 3 shown in FIGS. 1 and 2 is pulled out, the opening and closing plates 61a and 61b are positioned to cover the opening 5a of the shielding plate 5, and as shown in FIGS. 3 and 4, the motor device 3 In the inserted state, the opening and closing plates 61 a and 61 b are moved to the positions overlapping the shield plate 5 . In addition, a slide link 9 is arranged on the bottom of the side plate support portion 4b, and the slide link 9 is linked with the position of the motor 3 to move the side plate 4 horizontally along the rail 7 . A return spring 15 is provided between the sliding coupling body 9 and the partition plate 11 that move the side plate 4 in accordance with the pulled-out position of the motor device 3 . As shown in FIG. 1, the return spring 15 is used to move the side plate 4 to the return position, so that when the motor machine 3 is pulled out, the shield plate 5 and the opening and closing plates 61a and 61b provided on the side plate 4 are used to cover and raise the height. around the connection port 2a of the voltage unit 20 . The return spring 15 and the sliding coupling body 9 form a sliding mechanism that moves the side plate 4 in the carrying-in and carrying-out direction of the motor device 3 .

1 and 2, when the motor device 3 is pulled out, the connection port 2a of the bushing 2 is covered by the shielding plate 5 and the opening and closing plates 61a and 61b belonging to the ground metal, so as to prevent the operator from being electrocuted. countermeasures. As shown in FIG. 3 , when the motor device 3 is inserted, the opening and closing plate links 14 a and 14 b are actuated in conjunction with the insertion position of the motor device 3 . The electric machine 3 is mounted on a trolley 3a which is movable in the carrying-in and carrying-out direction, and moves in the insertion direction of the connection port 2a together with the trolley 3a. In terms of the operation sequence at the time of insertion, first, the pull-out mechanism provided in the electric machine 3 or the trolley 3a is engaged with the opening and closing mechanism of the connecting link 17 and the opening and closing plate links 14a and 14b, whereby the opening and closing plates 61a, 14b are engaged. 61b moves up and down to open the opening 5a corresponding to the connection port 2a of the bushing 2 . If the insertion operation is continued, the sliding coupling body 9, which horizontally moves the side plate 4 according to the position of the motor device 3, is engaged with the pull-out mechanism of the trolley 3a, whereby the side plate 4 and the side plate 4 are compressed in the state of compressing the return spring 15. The shielding plate 5 moves together in the insertion direction of the motor machine 3 . When the insertion operation is completed, the shielding plate 5 of the ground metal connected to the side plate 4 is accommodated between the motor device 3 and the high-voltage part 20 with the spacer 11 interposed therebetween, and the movement is completed. Furthermore, the insulating distance between the shielding plate 5 and the high-voltage charging portion 2b is ensured.

In addition, during the pull-out operation, the side plate 4 is returned to the pull-out position by the return spring 15 connected to the sliding connection body 9, and when the pull-out operation is completed, the connection link 17 and the opening and closing plate link 14a, In the opening and closing mechanism of 14b, the connection port 2a of the bushing 2 is covered by the shielding plate 5 and the opening and closing plates 61a and 61b. The side panel 4 having the side panel bottom portion 4a and the side panel support portion 4b has an L-shaped shape in side view, and the side panel 4 is guided by the rail 7 so that the side panel 4 can move smoothly. In this way, since the side plate 4 is supported by the L-shaped side plate bottom portion 4a, the side plate 4 can be supported without further providing a guide rail or the like on the upper portion of the side plate support portion 4b. In addition, the side plate 4 is not limited to an L-shape, as long as the side plate 4 can be supported by the side plate bottom 4a and the rail 7, other shapes are also possible.

The side plate 4 is guided by the rails 7 that guide the insertion and extraction actions of the pull-out motor machine 3, whereby the shielding plate 5 for preventing electric shock can be used with a simple structure from moving. Thereby, the situation where the motor device 3 is pulled out at the time of inspection can be obtained, and the operator can be protected from touching the pull-out device of the motor device 3 of the high-voltage charging part 2b. In addition, the side plate bottom 4a is supported by the rails 7, thereby preventing the shielding plate 5 from falling down during movement. Furthermore, by dividing the shield plate 5 and fixing it to the side plate 4, the shield plate 5 can be reduced in size and weight can be reduced. Furthermore, by engaging with the pull-out mechanism of the trolley 3a provided in the electric machine 3 to drive the opening and closing mechanisms of the opening and closing plates 61a and 61b, the main body of the electric machine 3 can be omitted from redundant structures, and the pullable motor can be standardized. machine 3.

In addition, in Embodiment 1, the structure in which the connecting link 17 for driving the opening and closing plate links 14a, 14b is provided between the side plates 4 is shown, but the floor 12 may be provided for driving the opening and closing plate links 14a, 14b. 14b connecting rod. In this case, the same effect can be expected, and the structure provided on the side plate 4 can be simplified. Furthermore, in Embodiment 1, although the structure in which the pair of side plate bottoms 4a are provided on the inner side of the pair of rails 7 is adopted, the structure may be provided in the outer side of the rails 7, even if the inner side of the rails 7 cannot be used. The same effect can also be expected when the size of the side plate bottom portion 4a is sufficiently provided.

The present application describes the exemplary embodiment, but the various features, aspects, and functions described in the embodiment are not limited to the application of the specific embodiment, but can be applied to the embodiment alone or in various combinations. Therefore, innumerable variations which are not illustrated are assumed to be within the technical scope disclosed in the present specification. For example, the case where at least one component is changed, the case where it is added, or the case where it is omitted is included.

1: Metal latching switch mechanism 2: Bushing 2a: connector 2b: High voltage charging section 3: motor machine 3a: Trolley 4: Side panel 4a: Bottom of side panel 4b: Side plate pillar part 4c: Frame 5: Shield plate 5a: Opening 6: Opening and closing plate guide rail 61a, 61b: Opening and closing plate 7: Track 9: Sliding link 10: Compartment 11: Partition 12: Flooring 13: Ceiling 14a, 14b: Opening and closing plate link 15: Return spring 17: Connecting connecting rod 20: High Voltage Department

FIG. 1 is a cross-sectional view showing a side view of the pull-out device of the electric machine according to Embodiment 1, and shows a state in which the electric machine is pulled out. FIG. 2 is a cross-sectional view showing a front view of the pull-out device of the electric machine according to Embodiment 1, and shows a state in which the electric machine is pulled out. 3 is a cross-sectional view showing a side view of the pull-out device of the electric machine of Embodiment 1, and shows a state in which the electric machine is inserted. 4 is a cross-sectional view showing a front view of the pull-out device of the electric machine according to Embodiment 1, and shows a state in which the electric machine is inserted.

1: Metal latching switch mechanism

2: Bushing

2a: connector

2b: High voltage charging section

4: Side panel

4a: Bottom of side panel

4b: Side plate pillar part

4c: Frame

5: Shield plate

5a: Opening

6: Opening and closing plate guide rail

61a, 61b: Opening and closing plate

7: Track

9: Sliding link

10: Compartment

11: Partition

12: Flooring

13: Ceiling

14a: Opening and closing plate connecting rod

15: Return spring

17: Connecting connecting rod

20: High Voltage Department

Claims (10)

A pull-out device for an electric machine, the electric machine is carried in and out from a connection port of a high-voltage part of a switch mechanism, the pull-out device for the electric machine is provided with: a shielding plate, which is electrically grounded and arranged between the high-voltage part and the electrical machine and has an opening corresponding to the connection port; a pair of side plates supporting the shielding plate from both sides; and A pair of rails supports the side plate and moves the side plate together with the shield plate in the carrying-in and carrying-out direction of the electric machine. The pull-out device for an electrical machine as claimed in claim 1, further has a sliding mechanism, and the sliding mechanism is composed of: When the motor machine is in the pulled-out position, the surrounding of the connection port of the high-voltage part is covered by the shielding plate; When the motor device is in the insertion position, the side plate is moved so that the shield plate is accommodated between the motor device and the high voltage part. The pull-out device for a motor machine as claimed in claim 1, further comprising: an opening and closing plate for opening and closing the opening of the shielding plate; and The opening and closing mechanism opens and closes the opening and closing plate by closing the opening when the motor is at the pull-out position, and opening the opening when the motor is at the insertion position. The pull-out device for a motor machine according to claim 2, further comprising: an opening and closing plate for opening and closing the opening of the shielding plate; and The opening and closing mechanism opens and closes the opening and closing plate by closing the opening when the motor is at the pull-out position, and opening the opening when the motor is at the insertion position. The pull-out device for an electrical machine according to claim 1, wherein the shielding plate is divided into a plurality of pieces and is provided between the pair of side plates. The pull-out device for an electric machine according to claim 2, wherein the shielding plate is divided into a plurality of pieces and is provided between the pair of side plates. The pull-out device for an electric machine according to claim 3, wherein the shielding plate is divided into a plurality of pieces and is provided between the pair of side plates. The pull-out device for an electrical machine according to claim 4, wherein the shielding plate is divided into a plurality of pieces and is provided between the pair of side plates. A switch mechanism comprising: a pull-out device for an electric machine according to any one of claims 1 to 8. A switch mechanism is mounted with a motor device that moves in a direction of loading and unloading, and when the motor device is inserted, a connection part of the motor device and a high-voltage charging part are connected via a connection port of the high-voltage part, the switch mechanism being have: The shielding plate has an opening that can be opened and closed by an opening and closing plate at a position corresponding to the connection port, and is arranged at a position closer to the high-voltage portion than the position when pulled out when inserted to shield the above-mentioned high voltage. voltage department; The side plate has: a bottom extending along the carrying-in and unloading direction, and a pillar portion standing up from the bottom and on which the shielding plate is attached; and The rail guides the bottom of the side plate so as to move the side plate in the carrying-in and carrying-out direction.

Images