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Electric power opening and closing device and gas insulation circuit-breaker

A gas-insulated, circuit-breaker technology, applied in high-voltage air circuit breakers, circuits, electrical components, etc., can solve the problems of delay in driving force transmission, lengthening of the power transmission path, and limited speed, so as to compensate for time loss, The effect of reducing the driving force and suppressing the inertial load

Active Publication Date: 2012-08-08
JAPAN AE POWER SYST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, the length of the power transmission path becomes longer, the transmission of the driving force is delayed due to the influence of inertia, etc., and there is a limit to the speed increase.

Method used

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  • Electric power opening and closing device and gas insulation circuit-breaker
  • Electric power opening and closing device and gas insulation circuit-breaker
  • Electric power opening and closing device and gas insulation circuit-breaker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0032] refer to Figure 1 to Figure 7 , a gas insulated circuit breaker according to one embodiment of the power switchgear of the present invention will be described. figure 1 It is a front view showing main parts of the gas insulated circuit breaker 100 . As shown in the figure, the gas insulated circuit breaker 100 is formed by placing a cylindrical pot-shaped grounding container 2 on a stand 13, and an insulating gas such as SF6 is sealed in the interior 2a of the grounding container 2 at a predetermined pressure. Gas (sulfur hexafluoride gas). A breaker 402 that breaks current is accommodated inside the grounded container 2 . A link mechanism 401 is connected to the disconnection portion 402 , and the link mechanism 401 is connected to an unillustrated operation unit housed in the operation box 12 . In addition, in this embodiment, a gas insulated circuit breaker of a two-point breaking system having a two-point breaking portion is used, but the breaking portion of the...

Embodiment approach 2

[0055] Next, a gas insulated circuit breaker according to another embodiment of the power switchgear of the present invention will be described. Figure 8 It is an exploded perspective structural view showing a sub-driving force generating mechanism which is a characteristic part of the gas insulated circuit breaker 100 of this embodiment. This embodiment differs from Embodiment 1 in that a coil spring is assembled to the rotating portion of the rotating lever 4 instead of the torsion bar to form a secondary driving force generating mechanism. Other points are the same as those in Embodiment 1, so the same reference numerals are used to omit description.

[0056] Such as Figure 8As shown, the coil spring 31 as the sub-driving force generating mechanism fixes one end portion 31d of the leaf spring 31e formed in a spiral shape to the shaft portion 31b, and fixes the other end portion 31c of the leaf spring 31e to the cylinder. Body 31f is formed. The proximal end of the shaf...

Embodiment approach 3

[0060] use Figure 9 ~ Figure 10 A power switching device according to another embodiment of the present invention will be described. This embodiment is not an example in which the present invention is applied to a gas insulated circuit breaker using a container box-shaped ground container, but is applied to an insulator type gas insulated circuit breaker. Figure 9 A perspective external view showing a part of the insulator-type gas insulated circuit breaker according to this embodiment, Figure 10 From Figure 9 The top view of the arrow X direction.

[0061] As shown in these figures, the insulator-type gas insulated circuit breaker 200 accommodates the disconnecting portion in the cylinder of two cylindrical insulators 19 that are arranged facing each other and substantially horizontally. The opposite ends of the two insulators 19 are connected to both surfaces of the frame body 3 formed airtight. The frame body 3 connecting the two insulators 19 is installed on the st...

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PUM

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Abstract

This invention refers to an electric power switching device (100) having an operation part (12) and a power transmission mechanism (4, 5, 8, 9, 11). The operation part (12) generates driving force to drive movable contact (6) to a direction of putting or cutting. The movable contact (6) and a fixing contact (7) are configured oppositely in a way capable of contacting or separating. The power transmission mechanism transmits driving force to the movable contact (6) of the operation part. A secondary driving force generating mechanism is mounted at rotation lever (4) of the power transmission mechanism and is composed of a twisted bar (1). The twisted bar accumulates force when the movable contact is put or cut and releases force when moving in the other state. Therefore, the driving ability of the driving source is not increased, and the length of the power transmission component has no relationship with the high speed motion of the electric power switching device, such as the shutter or the breaker and so on.

Description

technical field [0001] The present invention relates to a power switching device, for example, a switch, a disconnecting unit, a gas insulated circuit breaker, etc. suitable for high-voltage specifications such as substations and switching stations. Background technique [0002] The function of circuit breakers installed in substations or switching stations is usually to ensure the energized state, and to break the current when abnormal currents occur due to lightning or the like due to the power system. In general, a movable contact is disposed opposite to a fixed contact in a power switching device so that it can be contacted and separated, and the movable contact is driven in a direction of immediate separation by an operating unit to turn on and pull off the circuit breaker. [0003] The operating unit of such an electric switching device is configured using an electromagnet, an elastic member, a hydraulic pressure source, or the like as a driving source. As an example ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H33/42H01H33/40H01H3/30
Inventor 桥本裕明大久保健一松本诚治八重樫昌弘浦井一钟昌庆孙文龙
Owner JAPAN AE POWER SYST