TW202249372A - 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 for electric machines

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

The high-voltage compartment (compartment) of the metal lock-shaped switch mechanism is composed of a circuit breaker compartment, a bus compartment, a connecting compartment, etc., and each compartment is provided with a partition, which is used to communicate with other compartments. room isolation. Electrical equipment such as circuit breakers, potential transformers, surge arresters, and zero-phase voltage detection capacitors may have a pull-out structure 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 an 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 getting an electric shock during the inspection, a metal partition is installed to protect the author from touching the high-voltage charging part during the inspection.

In the prior art, for example, as shown in Patent Document 1, a bushing is installed on the internal partition of the metal latch type switch mechanism, and the bushing constitutes a connection port that can be pulled out of the motor device. A shield plate for preventing electric shock during inspection is arranged in front of the metal latch type 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. A mechanism for driving in conjunction with the pull-out position of the motor is arranged on the shielding plate. (Prior Art Literature) (patent documents)

Patent Document 1: Japanese Patent Laid-Open No. 2009-17628

(Problem to be solved by the invention)

However, in Patent Document 1, since the shielding plate is provided with a mechanism for driving in conjunction with the pull-out position of the motor, the shielding plate becomes a large-sized member, and the operation force required to drive it becomes large. Furthermore, since the shielding plate is a large member, a solution to drive it smoothly so as not to fall is required. Therefore, it is necessary to set up: a pair of guide rails that are individually arranged on the ceiling and floor of the metal lock-shaped switch mechanism, and four rollers that are arranged at the four corners of the upper and lower ends for smooth movement. Thus, there is a problem of increasing the number of parts in order to smoothly drive the shield 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 shielding plate for electric shock, and when the motor machine is pulled out during inspection, it can protect the operator from touching it. High voltage charging part. (a means of solving a problem)

The pull-out device of the electric machine in this case is to carry in and out the electric machine from the connection port of the high-voltage part of the switch mechanism. The pull-out device of the electric machine is equipped with: a shielding plate, which is electrically grounded and arranged between the high-voltage part and the above-mentioned high-voltage part. There is an opening corresponding to the aforementioned connecting port between the aforementioned motor machines; a pair of side plates support the aforementioned shielding plate from both sides; and a pair of rails support the aforementioned side plate and make it go to the aforementioned motor together with the aforementioned shielding plate The machine moves in the loading and unloading direction. (invention effect)

According to this invention, a side plate supporting the electrically grounded shielding plate from both sides, and a pair of rails supporting the side plate and moving along the loading and unloading direction of the electric machine together with the shielding plate are provided. A simple structure is used to prevent the movement of the shielding plate to prevent electric shock, and it is possible to protect the operator from touching the high-voltage charging voltage part of the electric machine pulling device when pulling out the electric machine during inspection.

Implementation type 1. 1 to 4 are diagrams showing the structure of a pulling device of an electric machine according to Embodiment 1. FIG. Fig. 1 and Fig. 2 show the drawing device under the state that the electric machine is pulled out. Fig. 1 is a sectional view showing a side view of a pull-out device of an electric machine. Fig. 2 is a front view of Fig. 1 . In addition, FIG. 1 is a diagram showing cross section AA of FIG. 2 , and FIG. 2 is a diagram showing cross section BB of FIG. 1 . In addition, in FIG. 1 and FIG. 2, the drawing of the electric machine which was pulled out is abbreviate|omitted. In addition, FIG. 3 and FIG. 4 show the pull-out device of the electric device in the state where the electric device is inserted into the metal latch type switch mechanism. Fig. 3 is a cross-sectional view showing a side view of a pulling device of an electric machine. FIG. 4 is a front view of FIG. 3 . In addition, FIG. 3 is a diagram showing a cross section CC in FIG. 4 , and FIG. 4 is a diagram showing a cross section DD in FIG. 3 . In addition, in FIG. 3 , the inserted electric machine is shown with a chain line, and FIG. 4 omits the drawing of the electric machine.

In FIGS. 1 to 2 , the construction of a compartment 10 of a metal latch type switch mechanism 1 equipped with a pull-out device for a pull-out motor machine is shown. The compartment 10 in which the pull-out motor 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 loading and unloading (inserting and pulling) of the grounded metal floor 12 and ceiling 13 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 (current transformer), and an instrument transformer (instrument transformer). 2a to connect the connection part of the motor device 3 and the high-voltage charging part 2b, and when pulling out, the connection part of the motor device 3 is not connected to the high-voltage charging part 2b.

In addition, the pull-out device of the motor machine 3 is composed of a pair of side plates 4, a shielding plate 5, and a device for driving the side plates 4 and the shielding plate 5. The pair of side plates 4 are configured to guide the insertion and pulling of the motor machine 3. The shielding plate 5 is arranged between the aforesaid side plates 4 on the inner side of the track 7 for action. The side plate 4 having the side plate bottom 4a and the side plate support portion 4b is L-shaped when viewed from the side. Move in and out direction. Here, it is shown that the rail 7 for supporting the side plate bottom 4a is shared with the rail 7 for loading and unloading the motor equipment 3, but they can also be provided separately.

A shielding plate 5 is fixed between a pair of side plate pillar portions 4b erected from the side plate bottom 4a. The shielding plate 5 may consist of one sheet or a plurality of sheets, and the number of sheets is not particularly limited. The shield plate 5 is configured to have an opening portion 5 a corresponding to the connection port 2 a 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. The opening and closing plate guide rail 6 is linked with the position of the motor 3 and guides the opening and closing plate 61a that opens and closes the opening 5a of the shielding plate 5. , the action of 61b. In addition, the side plate 4 is provided with opening and closing plate connecting rods 14a, 14b. The opening and closing plate connecting rods 14a, 14b are used to drive the opening and closing plates 61a, 61b. The connecting link 17 is connected between the pair of side plates 4 . The opening and closing plate links 14a, 14b and the connecting link 17 constitute an opening and closing mechanism for driving the opening and closing plates 61a, 61b. As shown in FIG. 2, the side plate pillar portion 4b of the side plate 4 has a frame portion 4c on the side of the partition plate 11, and a shield plate 5 is provided between the pair of frame portions 4c at a predetermined distance from each other. Furthermore, the opening and closing plates 61a, 61b are attached so as to be movable along the opening and closing plate guide rails 6 provided on the side plate support portion 4b so as to cover the opening 5a having no shielding plate 5 therein.

In the state where the motor device 3 shown in Fig. 1 and Fig. 2 is pulled out, the opening and closing plates 61a, 61b are located at the position covering the opening 5a of the shielding plate 5, and as shown in Fig. 3 and Fig. 4, the motor device 3 In the inserted state, the opening and closing plates 61 a and 61 b move to a position overlapping with the shielding plate 5 . In addition, a slide link 9 is disposed at the bottom of the side plate pillar portion 4 b, 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 connection body 9 and the partition plate 11 that moves the side plate 4 according to the pull-out position of the motor machine 3 . As shown in Figure 1, the return spring 15 is used to move the side plate 4 to the reset position, so that when the motor machine 3 is pulled out, the shielding plate 5 and the opening and closing plates 61a, 61b arranged on the side plate 4 can cover and Around the connection port 2a of the voltage part 20. The return spring 15 and the sliding coupling body 9 form a slide mechanism that moves the side plate 4 in the loading and unloading direction of the motor device 3 .

As shown in Figures 1 and 2, when the motor machine 3 is pulled out, the connection port 2a of the bushing 2 will be covered by the shielding plate 5 and the opening and closing plates 61a, 61b belonging to the grounding metal, so as to prevent the operator from getting an electric shock. Countermeasures. As shown in Fig. 3, when the motor device 3 is inserted, the opening and closing plate link 14a, 14b will be moved in conjunction with the insertion position of the motor device 3. The electric machine 3 is mounted on a cart 3 a movable in the loading and unloading direction, and moves in the insertion direction of the connection port 2 a together with the cart 3 a. In terms of the action sequence when inserting, first, the pull-out mechanism provided on the motor device 3 or the trolley 3a is engaged with the opening and closing mechanism connecting the link 17 and the opening and closing plate links 14a, 14b, thereby making the opening and closing plates 61a, 61b moves up and down, and opens the opening 5a corresponding to the connection port 2a of the bushing 2 . If the insertion operation is continued, the sliding connection body 9 that moves the side plate 4 horizontally according to the position of the motor device 3 will engage with the pull-out mechanism of the trolley 3a, whereby the side plate 4 and The shielding plate 5 moves toward the insertion direction of the motor machine 3 together. When the insertion operation is finished, the shield plate 5 connected to the side plate 4 and belonging to the ground metal is accommodated between the motor device 3 and the high-voltage part 20 via the partition plate 11, and the movement ends. Furthermore, an insulating distance between the shield plate 5 and the high-voltage charging portion 2b is ensured.

In addition, during the pull-out operation, the side plate 4 will be reset to the pull-out position by the return spring 15 connected to the sliding connection body 9. 14b of the opening and closing mechanism, the connection port 2a of the bushing 2 will be covered by the shielding plate 5 and the opening and closing plates 61a, 61b. The side plate 4 having the side plate bottom 4a and the side plate support portion 4b is L-shaped in side view, and the side of the side plate bottom 4a is guided by the rail 7 so that the side plate 4 can move smoothly. In this way, the side panel 4 is supported by the L-shaped side panel bottom 4a, so the side panel 4 can be supported without further providing guide rails or the like on the upper portion of the side panel pillar 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 may also be used.

The side plate 4 is guided by the rail 7 that guides the inserting and pulling out action of the pull-out motor machine 3, whereby the shielding plate 5 that prevents electric shock from moving can be used by a simple structure. Thereby, the motor device 3 can be pulled out during the inspection, 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 bottom 4a of the side plate is supported by the rail 7, thereby preventing the shielding plate 5 from falling when moving. Furthermore, by dividing the shielding plate 5 and fixing it to the side plate 4, the shielding plate 5 can be miniaturized and reduced in weight. Moreover, by engaging with the pull-out mechanism of the trolley 3a provided on the motor device 3 to drive the opening and closing mechanisms of the opening and closing plates 61a, 61b, the redundant structure of the main body of the motor device 3 can be omitted, and the motors that can be pulled out can be standardized. machine 3.

In addition, in Embodiment 1, the connection link 17 for driving the opening and closing plate links 14a, 14b is shown between the side plates 4, but it can also be provided on the floor 12 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 a pair of side plate bottoms 4a are arranged on the inside of a pair of rails 7, it can also be a structure arranged on the outside of the rails 7, even if the inside of the rails 7 cannot The same effect can be expected even when the size of the side plate bottom 4a is sufficiently provided.

This application describes exemplary embodiments, but the various features, aspects, and functions described in the embodiments are not limited to specific embodiments, but can be applied to the embodiments alone or in combination. Therefore, countless modifications which are not illustrated are assumed to be within the technical scope disclosed in this specification. For example, the case of changing, adding, or omitting at least one constituent element is included.

1: Metal latching switch mechanism 2: Bushing 2a: Connection port 2b: High voltage charging part 3: Motor machine 3a: Trolley 4: side panel 4a: Bottom of side panels 4b: Side plate pillar part 4c: frame part 5: shielding plate 5a: Opening 6: Open and close plate guide track 61a, 61b: opening and closing plate 7: track 9: sliding connection body 10: Compartment 11: Partition 12: floor 13: Ceiling 14a, 14b: open and close plate connecting rod 15: return spring 17: Connect the connecting rod 20: High Voltage Department

Fig. 1 is a sectional view showing a side view of a pulling device of an electric machine of Embodiment 1, and shows a state in which the electric machine is pulled out. Fig. 2 is a sectional view showing a front view of the pulling device of the electric machine of Embodiment 1, and shows a state in which the electric machine is pulled out. 3 is a 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 sectional view showing a front view of the pull-out device of the electric machine of Embodiment 1, and shows a state in which the electric machine is inserted.

1: Metal latching switch mechanism

2: Bushing

2a: Connection port

2b: High voltage charging part

4: side panel

4a: Bottom of side panels

4b: Side plate pillar part

4c: frame part

5: shielding plate

5a: Opening

6: Open and close plate guide track

61a, 61b: opening and closing plate

7: track

9: sliding connection body

10: Compartment

11: Partition

12: floor

13: Ceiling

14a: Open and close plate connecting rod

15: return spring

17: Connect the connecting rod

20: High Voltage Department

Claims (10)

A pull-out device for an electric machine is used to move in and out the electric machine from the connection port of the high-voltage part of the switchgear. The pull-out device for the electric machine is equipped with: The shielding plate is electrically grounded and arranged between the aforementioned high-voltage portion and the aforementioned motor machine, and has an opening corresponding to the aforementioned connecting port; a pair of side panels supporting the aforementioned shielding panels from both sides; and A pair of rails support the side plate and move it together with the shielding plate in the loading and unloading direction of the electric machine. The pulling device of the motor machine as described in claim 1 further has a sliding mechanism, and the sliding mechanism is composed of: When the aforementioned motor machine is located at the pulled-out position, the surrounding of the aforementioned connecting port of the aforementioned high-voltage part is covered by the aforementioned shielding plate; When the motor device is at the insertion position, the side plate is moved so that the shielding plate is accommodated between the motor device and the high voltage part. The pulling device of the motor machine as described in claim 1 further has: an opening and closing plate for opening and closing the aforementioned opening of the aforementioned shielding plate; and The opening and closing mechanism is to open and close the opening and closing plate by closing the opening when the electric motor is at the pull-out position, and opening the opening when the electric motor is at the insertion position. The pulling device of the motor machine as described in claim 2 further has: an opening and closing plate for opening and closing the aforementioned opening of the aforementioned shielding plate; and The opening and closing mechanism is to open and close the opening and closing plate by closing the opening when the electric motor is at the pull-out position, and opening the opening when the electric motor is at the insertion position. The pulling device of an electric machine according to claim 1, wherein the shielding plate is divided into a plurality of pieces and arranged between the pair of side plates. The pulling device of an electric machine according to claim 2, wherein the shielding plate is divided into a plurality of pieces and arranged between the pair of side plates. The pulling device of an electric machine according to claim 3, wherein the shielding plate is divided into a plurality of pieces and arranged between the pair of side plates. The pulling device of an electric machine according to claim 4, wherein the shielding plate is divided into a plurality of pieces and arranged between the pair of side plates. A switch mechanism is provided with: the pull-out device of the motor machine described in any one of Claims 1 to 8. A switch mechanism is equipped with an electric device that moves in the direction of loading and unloading, and when the electric device is inserted, the connection part of the electric device and the high-voltage charging part are connected through the connection port of the high-voltage part. have: The shielding plate has an opening that can be opened and closed by the opening and closing plate at the position corresponding to the aforementioned connecting port, and when inserted, it is arranged at a position closer to the side of the high voltage portion than when it is pulled out to shield the aforementioned high voltage. voltage department; The side plate has: a bottom extending along the loading and unloading direction, and a pillar portion erected from the bottom to mount the shielding plate; and The rail guides the bottom of the side plate so that the side plate moves along the loading and unloading direction.

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