Gas path partition pressure adjusting mechanism

Abstract

The invention provides a gas path partition pressure regulating mechanism which comprises a sealed cavity or shell, and a first interface communicated with a gas path of a gas density relay and a second interface communicated with a gas path of electrical equipment are arranged on the sealed cavity or shell; a telescopic cavity is mounted in the cavity or shell, one end of the telescopic cavity isconnected with a plugging piece, and the other end of the telescopic cavity is connected with a partition piece; the plugging piece is provided with a first through hole which is communicated with the first connector through a connecting pipe. The partition piece is provided with a second through hole for communicating the interior of the telescopic cavity with the second interface; and the driving part is arranged in the telescopic cavity. During verification, the driving part drives the partition piece to move along a second direction. A gas path of the first interface and the second interface is separated; the driving part drives the plugging part to move along the first direction, so that the gas pressure of the telescopic cavity is changed and is used for adjusting the pressure of the gas density relay to rise and fall, the gas density relay is verified online, verification can be completed without a maintainer going to the site, and the reliability and efficiency of a power gridare improved.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to an air circuit cutoff pressure adjustment mechanism for on-line calibration of density relays applied to high-voltage and medium-voltage electrical equipment. Background technique [0002] At present, SF6 (sulfur hexafluoride) electrical equipment has been widely used in the power sector and industrial and mining enterprises, which has promoted the rapid development of the power industry. In recent years, with the rapid economic development, the capacity of my country's power system has expanded rapidly, and the amount of SF6 electrical equipment has increased. The role of SF6 gas in high-voltage electrical equipment is arc extinguishing and insulation. If the density of SF6 gas in high-voltage electrical equipment decreases and the micro-water content exceeds the standard, it will seriously affect the safe operation of SF6 high-voltage electrical equipment: 1) The densit...

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Problems solved by technology

3) When the temperature drops, too much moisture may form condensation water, which will significantly reduce the insulation strength of the surface of the insulating part, or even flashover, causing serious damage

In addition, if the on-site inspection of the inspectors is not performed in a standardized manner, there are still potential safety hazards

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