Load switch equipment

Abstract

The invention relates to the technology of the power equipment, and discloses load switch equipment. The load switch equipment comprises a tank body and a load switch; the tank body is an airtight tank body; the load switch comprises a first conducting end, a second conducting end and a conducting rod; the first end of the conducting end is capable of contacting and conducting with the first conducting end or separated and insulated from the same; the second end of the conducting rod can movably maintain the conductive contact with the second conducting end; the conducting rod performs linearmotion between the contacting-conducting and the separating-insulating, thereby realizing the on / off of the load switch; in the off state, a pure insulating fracture is arranged between the first endof the conducting rod and the first conducting end. The embodiment of the invention provides the load switch equipment with a novel structure; the load switch equipment is installed in the small airtight tank, and the used arc-extinguishing medium is the environment-friendly gas.

Description

technical field [0001] The invention relates to electric power equipment technology, in particular to a medium-voltage load switchgear with two arc extinguishing modes of compressed gas arc extinguishing and gas generating arc extinguishing. Background technique [0002] Among the 12kV medium-voltage load switchgear on the market, there are mainly two structures that can realize miniaturization: one is the form of using SF6 (sulfur hexafluoride) gas to extinguish the arc, such as Chinese patent CN101425421A discloses this technology , but SF6 gas is a non-environmental gas, and its development is limited; the other is the form of vacuum arc extinguishing, such as Chinese patent CN101800137B discloses this technology, but the cost is very high and there is no isolation fracture. [0003] At present, the pressure load switchgear of the compressed air type and the air generating type structure is in the form of an open type. It is large in size and exposed to the air and is eas...

AI Technical Summary

Problems solved by technology

[0002] Among the 12kV medium-voltage load switchgear on the market, there are mainly two structures that can realize miniaturization: one is the form of using SF6 (sulfur hexafluoride) gas to extinguish the arc, such as Chinese patent CN101425421A discloses this technology , but SF6 gas is a non-environmental friendly gas, and its development is limited; the other is the form of vacuum arc extinguishing, such as Chinese patent CN101800137B discloses this technology, but the cost is very high and there is no isolation fracture

[0003] At present, the pressure load switchgear of the compressed air type and the air generating type structure is in the form of an open type. It is large in size and exposed to the air and is easily affected by the environment, which cannot meet the maintenance-free requirements.

[0004] In addition, the current designs for compressed air and gas generating structures are relatively rough, and there is no detailed design for arc extinguishing structure and air flow structure, so arc extinguishing performance is relatively poor, miniaturization cannot be realized, and cost cannot be effectively reduced

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