Indicator for indicating dampness state of oil-immersed-type high-voltage bushing
A state indicator and high-voltage bushing technology, which is applied to transformer/inductor parts, electrical components, circuits, etc., can solve the problems of long detection period, difficulty in power failure, and difficulty in real-time and effective detection of bushings, etc., to ensure safety Simple and reliable operation and structure
Active Publication Date: 2014-10-01
STATE GRID CORP OF CHINA +2
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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
Method used
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Embodiment 1
[0016] Embodiment one: if Figure 1~3 As shown, an oil-immersed high-voltage bushing damp state indicator includes an interface piece 1, one end of the interface piece 1 is provided with a groove, and the outer wall of the other end of the interface piece 1 is provided with a The thread 11 connected to the immersed high-voltage bushing oil conservator 5, a through hole 13 leading to the other end of the interface is provided in the middle of the groove, and a color-changing mechanism is connected in the groove, and the color-changing mechanism includes a A colorless transparent tube 2, the two ends of the transparent tube 2 are provided with a sealing plate 21, the transparent tube 2 is placed with a color-changing silica gel 22, and the sealing plate 21 is provided with several holes smaller than the color-changing silica gel 22. The transparent tube 2 is provided with a protective cover 3, and several observation holes for observing the color-changing silica gel 22 are evenl...
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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...
Claims
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IPC IPC(8): G01N21/29H01F27/00
Inventor 廖福旺施广宇涂恩来王宁燕卞志文李志华
Owner STATE GRID CORP OF CHINA