Novel double-shielding contact box for high-voltage switch cabinet

Abstract

The invention discloses a novel double-shielding contact box for a high-voltage switch cabinet. The contact box comprises a barrel-shaped box body, a middle mounting flange plate, a plurality of annular umbrella groups for improving the insulating property at the upper part and the lower part of the mounting flange plate, and a rectangular box for a bus to enter and exit from the side of the box body. A bus fixing device is arranged at the butt joint of the interior of the rectangular box and the box body. A storage device for dispersedly storing redundant buses is arranged in the rectangularbox. According to the novel double-shielding contact box for a high-voltage switch cabinet, a bus fixing device is arranged at the joint of the rectangular box and the box body, after the bus enters the box body from the rectangular box, the position of the butt joint of the rectangular box and the box body can be fixed to prevent the butt joint from loosening to affect the use performance of thebox body, and the rectangular box is internally provided with the storage device for dispersedly storing the redundant buses to prevent the redundant buses from being exposed out of the contact box tocause congestion in the high-voltage switch cabinet.

Description

technical field [0001] The invention relates to the technical field of high-voltage switch cabinets, in particular to a novel double-shielding contact box for high-voltage switch cabinets. Background technique [0002] High-voltage switchgear is one of the most important parts of the power system. As a connection hub between the power grid and users, once it fails, it is very likely to cause serious consequences such as equipment damage or power outages for users. Therefore, with the development of the electric power industry and a series of fault problems in the operation of high-voltage switchgear, the protection level and performance requirements of the contact box used in the cabinet have also increased. In order to improve the insulation performance of the switchgear, and limit For the temperature rise of the switchgear, many improvements have been made in the design structure and installation process of the insulating parts over the years. [0003] The busbar outlet o...

AI Technical Summary

Problems solved by technology

The key point of this kind of double-shielded contact box is to improve the discharge problem caused by the uneven electric field at the position of the incoming and outgoing lines of the busbar. This kind of contact box will have the storage problem of different lengths of the busbar. The busbar is stored in a roll shape in the high-voltage switchgear. This storage method will occupy the extra space inside the high-voltage switchgear and is not convenient for the heat dissipation of the busbar. Moreover, the busbar is mostly exposed outside the contact box, and its surface will be damaged for a long time. Contaminated with dust, which will eventually affect the performance of the busbar

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