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Switchgear and method for manufacturing same

一种开关设备、真空容器的技术，应用在电开关、高压/大电流开关、高压空气断路器等方向，能够解决劳动和时间消耗等问题

Inactive Publication Date: 2009-04-15
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the coating operation needs to be performed carefully so as not to incorporate air bubbles into the RTV rubber which can cause partial discharges, a lot of labor and time are consumed in the fabrication of thermal stress relaxation members

Method used

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  • Switchgear and method for manufacturing same
  • Switchgear and method for manufacturing same
  • Switchgear and method for manufacturing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The following will combine figure 1 with figure 2 Embodiment 1 according to the present invention will be described. figure 1 is a partially cut sectional view showing the configuration of the switchgear including the vacuum valve in Embodiment 1. figure 2 Depicted are a perspective view, a sectional view, and a partially enlarged plan view showing the configuration of the shielding member in Embodiment 1. figure 2 (a) depicts a perspective view, figure 2 (b) depicts the figure 2 (a) The cross-sectional view taken along line B-B, figure 2 (c) depicts a partially enlarged plan view.

[0032] see figure 1 , the vacuum valve 1 is composed of a fixed electrode 1a and a movable electrode 1b, a vacuum container 2 and a resin mold plate 3, wherein the vacuum container 2 is composed of a metal flange 2a, a metal tube 2e and a ceramic insulating tube 2b, and the vacuum The container 2 incorporates the electrode 1 a and the electrode 1 b therein, and the resin mold 3...

Embodiment 2

[0083] The following will combine image 3 Embodiment 2 according to the present invention will be described. image 3 is a partially cut sectional view showing the configuration of the switchgear including the vacuum valve 1 in Embodiment 2.

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PUM

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Abstract

Provided are a switchgear, which suitably prevents partial discharge and has a highly reliable vacuum valve, and a method for manufacturing such switchgear. A vacuum valve (1) has a fixed electrode (1a) and a movable electrode (1b) in a vacuum container (2) composed of a metal flange (2a), a metal pipe (2e) and an insulating pipe (2b), and has a resin mold (3) on the outer circumference surface. Coil-shaped metal shields (4a, 4b) provided by having a coiled metal wiring in an annular shape are mounted on the outer circumference surface of the vacuum container (2), and the electrical field of a part (21d), of which electrical field is required to be modified on the vacuum container (2), is modified.

Description

technical field [0001] The present invention relates to a switchgear and a manufacturing method thereof, and more particularly to a switchgear including a vacuum valve whose outer peripheral surface of a vacuum container is molded of resin, and to a method of manufacturing the same, and in particular to preventing resin molds from being damaged when subjected to temperature changes. Thermal stress relaxation and electric field relaxation occur from cracks, partial discharges, etc. that occur in the mold. Background technique [0002] The vacuum valve ensures its insulation performance by such a method that the outer peripheral surface of the vacuum container containing the movable electrode and the fixed electrode is molded by resin such as epoxy resin as an external insulator (hereinafter referred to as "resin"). Modeling"). [0003] Usually, the thermal stress relaxation member is practically applied only to required parts, ie, parts where thermal stress relaxation is req...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/66
CPCH01H2033/6623H01H33/66207H01H33/66261H01H33/24H01H33/66Y10T29/49105
Inventor 井上直明有冈正博
Owner MITSUBISHI ELECTRIC CORP
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