Pure porcelain high-voltage bushing with positive voltage protection for transformer
A technology of positive pressure protection and high-voltage bushings, which is applied in transformer/inductor parts, transformer/inductor coils/windings/connections, engine sealing, etc., which can solve safety accidents, bushing sealing defects, Reduce the insulation performance of the bushing and other problems to achieve the effect of ensuring the compressive strength, improving the insulation performance and extending the length of the arc creeping
Active Publication Date: 2021-01-29
福州清河源环保科技有限公司
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Problems solved by technology
[0004] The pure porcelain high-voltage bushings in the prior art are prone to fine cracks after long-term use, resulting in sealing defects in the bushings, and moist air from the outside can easily enter the bushings through the cracks, greatly reducing the insulation performance of the bushings, and further It is easy to cause safety accidents
Method used
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Embodiment 1
[0040] see Figure 1-3 , a pure porcelain high-voltage bushing with positive pressure protection for a transformer, comprising a porcelain pipe body 101, a conductive copper pipe 102 is fixedly penetrated in the middle of the porcelain pipe body 101, and a fixed connection is made on the outer wall of the porcelain pipe body 101. A plurality of pressure-sensitive arc-climbing junctions 103, multiple sets of film installation holes 104 matching the pressure-sensitive arc-climbing junctions 103 are provided on the outer wall of the conductive copper tube 102, and a pressure-sensitive trigger film is fixed and sealed on the inner wall of the film installation holes 104 105. The pressure-sensitive arc-climbing junction 103 is set in the shape of a truncated cone. The number of sets of membrane installation holes 104 is the same as that of the pressure-sensitive arc-climbing junction 103. Each set of membrane installation holes 104 corresponds to a pressure-sensitive arc-climbing ju...
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The invention discloses a pure porcelain high-voltage bushing with positive-voltage protection for a transformer, and belongs to the technical field of transformer high-voltage bushings. The pure porcelain high-voltage bushing can be applied with positive-voltage protection by setting insulating gas in a porcelain bushing body, and can prevent external air from entering the bushing in a short timewhen tiny cracks are generated on the bushing, thus the insulating performance of the bushing is effectively improved, meanwhile, a pressure sensing climbing arc structure and a gas storage pressuresupplementing pipe are also filled with insulating gas, and by setting the pressure intensity of the insulating gas and combining with the specially-made gas supplementing valve, a gas supplementing valve can be automatically triggered to be switched on after cracks are generated, so that the insulating gas in the gas storage pressure supplementing pipe flows into the porcelain pipe body through the gas supplementing pressurizing pipe, the positive pressure protection time of the bushing can be effectively prolonged, the insulation performance of the bushing is further improved, the safety performance is remarkably enhanced, a worker can be reminded that cracks are generated on the bushing, and detection of the bushing cracks is greatly facilitated.
Description
technical field [0001] The invention relates to the technical field of transformer high-voltage bushings, in particular to a pure porcelain high-voltage bushing with positive voltage protection for transformers. Background technique [0002] High-voltage bushings are mainly used for ground insulation of incoming and outgoing lines of power equipment such as transformers, reactors, and circuit breakers, and high-voltage circuits passing through walls. There are three types of high voltage bushings: single dielectric bushing, composite dielectric bushing and capacitive bushing. The main insulation of the capacitive bushing is composed of a coaxial cylindrical series capacitor bank formed by layered insulating materials and foil-shaped metal electrodes intertwined on the conductive rod. According to different insulating materials, it is divided into gummed paper and oiled paper capacitive bushing. [0003] Due to different voltage levels, high-voltage bushings are available i...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H01F27/32H01F27/40H01B17/58F16J15/06
CPCF16J15/06H01B17/583H01F27/324H01F27/402
Inventor郭山河
Owner福州清河源环保科技有限公司