High-voltage bushing and processing technology thereof

A high-voltage bushing and processing technology, which is applied in the direction of lead-in/through-type insulators, insulators, electrical components, etc., can solve the problem that the capacitor electrode and the insulating layer cannot be well fused, so as to improve the insulation performance and improve the high resistance Low temperature performance, effect of improving mechanical properties

Inactive Publication Date: 2016-02-24
西安神电高压电器有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention provides a high-voltage bushing and its processing technology, which mainly solves the problem that the internal capacitor electrode and the insulating layer cannot be well fused into a whole when the coiled core in the background technology is filled with epoxy resin or insulating oil. question

Method used

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  • High-voltage bushing and processing technology thereof
  • High-voltage bushing and processing technology thereof

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Embodiment Construction

[0056] see figure 1 , The high-voltage bushing of the present invention includes a conductive rod, a capacitor electrode and an insulating layer between the capacitor electrodes, and the capacitor electrode is one or more of conductive cloth, conductive mesh or conductive yarn. If necessary, an insulating jacket provided on the outermost layer may also be included.

[0057] Conductive cloth, conductive mesh or conductive yarn after dewaxing, degreasing, pre-impregnation or coating coupling agent treatment; water absorption rate is less than 0.1%; thickness is 0.01mm ~ 1mm; material is non-woven fabric or fiber cloth dip-plating or brush-plating Metal conductive materials such as copper and tin or other non-metallic conductive materials such as carbon black can also be made of metal wires, metal strips or mixed with metal wires and plant fiber wires. Metal wires and metal strips include copper, tin, stainless steel or aluminum, etc.; plant fiber wires are cotton fibers or soyb...

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Abstract

The invention relates to a high-voltage bushing and a processing technology thereof. A capacitor electrode of the high-voltage bushing adopts one or more of conductive fabric, a conductive net and conductive yarn. The processing technology of the high-voltage bushing comprises steps as follows: an insulating layer is prepared in a winding manner firstly, and a capacitor electrode layer is prepared in a winding manner; the steps are repeated alternately until a core is formed; finally, vacuum impregnation is performed, and the high-voltage bushing is formed. According to the high-voltage bushing and the processing technology thereof, the conductive fabric, the conductive net or the conductive yarn is adopted as the capacitor electrode, and epoxy resin or insulating oil can smoothly run through the capacitor electrode and is fused with the insulating layer; the dielectric loss of the high-voltage bushing is reduced from 5 permillage to 3 permillage, the magnitude of partial discharge is reduced from the value lower than 10 pC to the value lower than5 pC, the insulating property is improved by higher than 10%, and the qualified rate of production is increased to be higher than 90% from 40%.

Description

technical field [0001] The invention relates to a high-voltage bushing used in the power transmission and transformation industry and its processing technology. Background technique [0002] At present, the high-voltage bushings used in the power transmission and transformation industry have two structures: oil-immersed and dry-type. The insulating layer of the dry-type bushing structure mainly includes glue-impregnated crepe paper type, glue-impregnated glass fiber winding type and glue-impregnated synthetic fiber cloth, etc. Way. The capacitive electrodes used in the cores of these products are all aluminum foils, and the capacitive electrodes and insulating layers are alternately arranged when the cores are rolled. Because the aluminum foil is easy to fold and tear, it is difficult to control the tightness of the rolling, and the performance of the equipment and the operation level of the workers are very high. What is more serious is that the insulating oil or epoxy res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B17/58H01B17/26H01B19/00
CPCH01B17/583H01B17/26H01B19/00
Inventor 叶霖严锋杨筱安
Owner 西安神电高压电器有限公司
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