Three-station solid insulated full-sealed switch grounding pole device
A solid insulation and fully sealed technology, which is applied in the direction of grounding devices, can solve the problems of increased equipment cost, large grounding column volume, and increased volume of ring network cabinets, so as to achieve improved insulation performance, safe and reliable use, and reduced manufacturing costs. Effect
Active Publication Date: 2014-08-13
BEIJING SOJO ELECTRIC
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Problems solved by technology
[0002] The grounding posts used in the existing three-position solid insulated and sealed switch grounding mechanisms are mostly cylindrical plugs made of copper conductors, which realize the opening and closing function of the grounding mechanism by opening and closing with the switch blade parts. This kind of grounding post The large volume combined with the external switch knife is relatively large and occupies a large space, which leads to an increase in the volume of the ring network cabinet and increases the cost of the equipment. Its insulation performance needs to be improved, which is not conducive to the miniaturization, safety and reliability pursued now. Sexual RMU development requirements
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[0017] see figure 1 and figure 2 As shown, the three-position solid insulation fully sealed switch grounding column device of the present invention includes an insulating body 1 made of epoxy resin fixedly installed on the transmission box body, and the upper end of the insulating body 1 is processed with a hole extending into the lower part of the insulating body 1. Open slot 3, insulating oil 4 is installed in the open slot 3, which can make the grounding mechanism reach a sufficient and safe insulation distance between the electrified bodies in the open state, which has better insulation performance than the existing grounding post made of copper conductors . The bottom of the insulating body 1 is sealed with a contact 2, the upper end of the contact 2 extends into the open groove 3, the lower part of the contact 2 is sheet-shaped, and its lower end protrudes from the bottom surface of the insulating body 1, and the upper end of the contact 2 is processed with Connection...
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The invention discloses a three-station solid insulated full-sealed switch grounding pole device, and belongs to the technical field of grounding devices on power transmission and distribution switches. The device comprises an insulated body (1), the upper end of the insulated body is provided with an open slot, and insulating oil is filled in the open slot; a contact is fixedly sealed at the bottom of the insulated body, the upper end of the contact extends into the open slot, the lower end of the contact extends out of the bottom of the insulated body, and the upper end of the contact is provided with a connecting slot; a flange assembly is arranged on the insulated body, the middle part of the flange assembly is provided with a flange connected with the insulated body, and the lower part of the flange assembly extends into the open slot; and a grounding rod passes through the flange assembly, an oil seal is arranged between the upper part of the flange assembly and the grounding rod, a sealing cover is arranged on the flange assembly and the oil seal, the sealing cover is buckled with the outer surface of the flange assembly, a sealing ring is arranged between the flange assembly and the insulated body, and a plug inserted into the connecting slot is arranged at the lower end of the grounding rod. The three-station solid insulated full-sealed switch grounding pole device has small volume and good insulating property, and can reduce the manufacturing cost of a ring main unit.
Description
technical field [0001] The invention relates to a grounding device on a power transmission and distribution switch, in particular to a three-position solid insulated fully sealed switch grounding column device installed in a ring network cabinet of a relatively small power transmission and distribution switch. Background technique [0002] The grounding posts used in the existing three-position solid insulated and sealed switch grounding mechanisms are mostly cylindrical plugs made of copper conductors, which realize the opening and closing function of the grounding mechanism by opening and closing with the switch blade parts. This kind of grounding post The large volume combined with the external switch knife is relatively large and occupies a large space, which leads to an increase in the volume of the ring network cabinet and increases the cost of the equipment. Its insulation performance needs to be improved, which is not conducive to the miniaturization, safety and relia...
Claims
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IPC IPC(8): H02B1/16
Inventor 梁吉省李红伶陶文庸林忠波张曼王美胜
Owner BEIJING SOJO ELECTRIC