An oil-immersed high-voltage bushing damp state indicator

Abstract

The invention relates to an indicator for indicating the dampness state of an oil-immersed-type high-voltage bushing. The indicator is characterized by comprising a connector element, wherein one end of the connector element is provided with a groove, and the outer side wall of the other end of the connector element is provided with a thread connected with an oil-immersed-type high-voltage bushing oil storage cabinet; the middle part of the groove is provided with a through hole running through the other end of the connector element; the groove is internally connected with a color change mechanism comprising a colorless transparent pipe; two ends of the transparent pipe are both provided with seal plates; the transparent pipe is internally provided with allochroic silicon gel; the seal plates are provided with a plurality of through holes the pore diameters of which are less than the outer diameter of the allochroic silicon gel; the transparent pipe is externally sleeved with a protective sleeve; a plurality of observation holes for observing the allochroic silicon gel is uniformly distributed in the protective sleeve. The indicator can be used for effectively and reliably indicating the dampness state of the oil-immersed-type high-voltage bushing in real time without power failure.

Description

technical field [0001] The invention relates to an oil-immersed high-voltage bushing damp state indicator. Background technique [0002] Oil-immersed high-voltage bushing is one of the most critical components of power transformers. After the bushing is damp, under the long-term action of the high voltage of the power grid, it is prone to insulation breakdown, and even a bushing explosion accident, resulting in damage to the power transformer and affecting Grid security. In recent years, due to problems such as sealing structure design, lead wire installation, and material aging of high-voltage bushings, the phenomenon of seal failure and bushing damp has occurred from time to time. If problems are found in time and measures are taken at the initial stage of bushing damp, accidents can be well avoided. happened. At present, the method of measuring the dielectric loss and capacitance of the casing damp is mainly used to indirectly check the damp condition of the bushing. T...

AI Technical Summary

Problems solved by technology

This method has problems such as power failure and long detection period, and it is difficult to effectively detect the damp defect of the bushing in real time. Therefore, how to monitor and indicate the damp state of the bushing insulation in real time and conveniently, find the damp defect of the bushing as soon as possible, and eliminate the problem in the bud It is of great significance to avoid further expansion of defects or accidents

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