A static contact and a high voltage switch
A technology of static contacts and moving contacts, applied to switches with movable electric contacts, air switch parts, contact shells/screens, etc., can solve the problem of uneven electric field distribution of static contacts, and achieve convenient fixing , good overall performance and high strength
Active Publication Date: 2022-05-17
PINGGAO GRP +2
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Problems solved by technology
[0004] The purpose of the present invention is to provide a static contact to solve the problem of uneven distribution of the electric field inside the static contact in the prior art, and also provide a high-voltage switch to solve the distribution of the electric field inside the static contact of the high-voltage switch in the prior art uneven problem
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Embodiment Construction
[0058] The specific embodiments of the high-voltage switch of the present invention will be further described below in conjunction with the accompanying drawings.
[0059] Such as figure 1 As shown, the high-voltage switch of the present invention is described by taking a three-phase gas-insulated metal-enclosed combined switchgear as an example. Of course, the high-voltage switch of the present invention is not limited to the switch illustrated in this embodiment. It may be a DC high voltage switch.
[0060] The three-phase gas-insulated metal-enclosed combined switchgear of this embodiment is as follows: figure 1 As shown, it includes a casing 23 and an isolation grounding switch 24 assembled in the casing 23. The casing is filled with a mixed gas as a medium for insulation and arc extinguishing. An insulator 22 is connected to the casing of the high-voltage switch. The high-voltage switch includes a moving contact 20 and the static contact 21 adapted to the movable contac...
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The invention provides a static contact and a high-voltage switch, wherein the static contact includes a static contact seat, a conductive contact finger installed on the static contact seat, and the conductive contact finger has a mating plug for the insertion of the moving contact to realize mating The hole also includes an arc strike ring that is shielded above the conductive contact finger, and its inner hole is used to be coaxial with the insertion hole for the moving contact rod to pass through; it also includes an arc suppression coil surrounded by the conductive contact finger, One end of the arc coil is electrically connected to the arc pilot ring, and the other end is electrically connected to the static contact seat, and an arc suppression magnetic field is generated when the current passes; the shielding cover is fixed on the static contact seat and sleeved on the outside of the arc suppression coil, The outer edge of the arc-starting ring is rounded, the upper end of the shield extends to the lower side of the arc-leading ring, and its outer peripheral surface is flush with the outer surface of the shield; the arc-starting ring and the shield together form an equipotential surface, which can balance The electric field inside the static contact.
Description
technical field [0001] The invention belongs to the technical field of high-voltage electrical equipment and devices, and in particular relates to a static contact and a high-voltage switch. Background technique [0002] With the continuous development of the power industry, sulfur hexafluoride gas-insulated fully enclosed distribution equipment (GIS for short) as an important electrical equipment has been widely used in the power field, and high-voltage switches are an important part of GIS, and their performance is crucial GIS has an important impact. [0003] Because high-voltage switches often carry relatively large voltage and current, arcing phenomenon often occurs at the fracture position during the opening and closing process. In order to avoid the arc from causing greater damage to the contacts, the high-voltage switch in the existing There are many arc-extinguishing structures. For example, the Chinese invention patent application with the publication number CN10...
Claims
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IPC IPC(8): H01H1/64H01H31/02H01H31/26
CPCH01H1/64H01H31/02H01H31/26
Inventor 贺永明谭盛武段晓辉魏建巍白玮甄利庞先海李俊锋王刚刘龙魏义涛占小猛谢世超孙清超
Owner PINGGAO GRP