Sealing structure of outdoor pole-mounted vacuum switch device

Abstract

The invention discloses a sealing structure of an outdoor pole-mounted vacuum switch device. The sealing structure comprises an outer shell plate, a welding bearing seat is arranged on the outer shell plate, and a plurality of screw holes are formed in the welding bearing seat. A rotating shaft sleeve is fixed in the plurality of screw holes through a fastening screw and via a sealing thick rubber mat and is of a cylindrical structure, an annular protruding block is integrally cast on the inner wall of the rotating shaft sleeve, and a framework oil seal and a ball bearing are symmetrically arranged at the position close to the annular protruding block from inside to outside. According to the invention, water vapor is prevented from entering a channel inside a power switch device, and the condition that condensation is extremely easy to form inside the shell of the power switch device when the air temperature is reduced and the humidity is higher, is avoided. And meanwhile, the reliability of the whole interlocking action is enhanced, and the input and output of a rotating mechanism are still not jammed even if no operation is carried out for a long time.

Description

technical field [0001] The invention belongs to the technical field of electric power supply equipment, and in particular relates to a sealing structure of vacuum switchgear on an outdoor column. Background technique [0002] In the current high-quality construction of safe power grids, power grid security incidents caused by equipment quality have occurred from time to time in recent years. Strengthening the efficient management of power equipment and controlling the quality of network-connected equipment from the source is the key to improving the safe operation of the power grid. [0003] The sealing of the conventional vacuum switchgear on the outdoor column mainly adopts the way of pressing the sealing rubber plate to realize the sealing of the surrounding environment. [0004] The seals of most of the equipment currently on the market are as follows: figure 1 As shown, this method achieves a certain degree of marginal sealing in conventional climates, but in harsh en...

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Problems solved by technology

[0008] The present invention aims to provide a sealing structure for vacuum switchgear on an outdoor column to solve the following problems of the switchgear on a distribution network column due to sealing problems: 1) The spring operating mechanism is corroded and stuck, causing the device to refuse to move , misoperation; 2) The short circuit and grounding of the secondary terminals due to condensation may cause potential failures in the measurement, control, and signal circuits; 3) The poor contact of the terminals due to corrosion causes the secondary circuits to The occurrence of open-circuit faults will easily cause great hidden dangers to the stable operation of switchgear; and other technical problems in three aspects

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