Contact double-shielding structure

A double shielding and contact technology, applied in switchgear, electrical components, switchgear setting and other directions, can solve the problems of unreasonable structure, poor insulation of insulating medium and easy breakdown, and achieve lower dielectric strength and avoid insulation. Material destruction, low cost effect

Active Publication Date: 2013-04-03
XIAN HIGH VOLTAGE APP RES INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a contact double-shielding structure to solve the problem that the structure of the movable contact of the existing high-voltage switchgear is unreasonable and the insulating medium such as air around the contact is poorly insulated and easily broken down under high voltage conditions. question

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Embodiment Construction

[0017] The present invention is described in further detail below in conjunction with accompanying drawing:

[0018] Such as figure 1 and figure 2 As shown, a contact double shielding structure of the present invention includes a first fixed contact 1, a first shielding net 3, a second shielding net 2, a moving contact 4, a second fixed contact 5, a solid insulator 7 and a grounding Conductive coating8. The first shielding net 3 and the second shielding net 2 are poured in the solid insulator 7 at intervals, and the solid insulator 7 is provided with a cavity, and the first fixed contact 1 and the second fixed contact 5 are arranged in the cavity at intervals. The fixed contact 1 is electrically connected to the first shielding net 3 through a connecting screw 6 , and the second fixed contact 5 is electrically connected to the second shielding net 2 through a connecting screw. A moving contact 4 is also provided in the cavity; a grounding conductive coating 8 is provided o...

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Abstract

The invention discloses a contact double-shielding structure. The contact double-shielding structure comprises a first fixed contact, a first shielding net, a second shielding net, a second fixed contact, a solid insulator and a grounding conductive coating, the first shielding net and the second shielding net are arranged in the solid insulator at an interval, a cavity is arranged in the solid insulator, the first fixed contact and the second contact are arranged in the cavity at an interval, the first fixed contact is electrically connected with the first shielding net by a coupling screw, the second fixed contact is electrically connected with the second shielding net through a coupling screw, and the grounding conductive coating is arranged on the periphery of the solid insulator. The shielding nets are connected with the fixed contact units by the aid of the screws, and a movable contact unit is positioned in the two fixed contact units and plays a role in electric connection. By the aid of the double-shielding structure, internal fault problems caused by low insulating strength of insulating gas can be decreased greatly.

Description

【Technical field】 [0001] The invention relates to the technical field of metal-enclosed switchgear, in particular to a double-shielding structure at a contact with a shielding net in the metal-enclosed switchgear. 【Background technique】 [0002] It is known that in the existing metal-enclosed switchgear, the insulation at the movable contact usually achieves insulation to ground or phase-to-phase through the insulation of the air around the contact or other insulating media. However, because the insulation strength of air and gas is far Smaller than solid insulating material, so the dielectric strength around the contact is usually lower, causing breakdown problems. 【Content of invention】 [0003] The purpose of the present invention is to provide a contact double-shielding structure to solve the problem that the structure of the movable contact of the existing high-voltage switchgear is unreasonable and the insulating medium such as air around the contact is poorly insula...

Claims

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Application Information

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IPC IPC(8): H02B13/035
Inventor 陈波陈雪飞潘峰
Owner XIAN HIGH VOLTAGE APP RES INST CO LTD
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