A pure porcelain high-voltage bushing with positive voltage protection for transformers

A technology of positive pressure protection and high-voltage bushing, which is applied in the directions of transformer/inductor parts, transformer/inductor coil/winding/connection, engine sealing, etc. Problems such as casing sealing defects are achieved to ensure the compressive strength, prolong the positive pressure protection time, and facilitate detection

Active Publication Date: 2021-10-29
广东金特变压器有限公司
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A pure porcelain high-voltage bushing with positive voltage protection for transformers
  • A pure porcelain high-voltage bushing with positive voltage protection for transformers
  • A pure porcelain high-voltage bushing with positive voltage protection for transformers

Examples

Experimental program
Comparison scheme
Effect test

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...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a pure porcelain high-voltage bushing with positive pressure protection for transformers, which belongs to the technical field of transformer high-voltage bushings, and can implement a positive pressure protection for the bushing by setting the insulating gas inside the porcelain tube. , when there are tiny cracks on the bushing, outside air cannot enter the bushing in a short period of time, thereby effectively improving the insulation performance of the bushing, and the pressure-sensitive arc-climbing junction and the gas storage and pressure supply tube are also filled with insulating gas , through the setting of the insulating gas pressure, combined with the special gas supply valve, it can automatically trigger the conduction of the gas supply valve after the crack is generated, so that the insulating gas in the gas storage and pressure supply tube flows to the porcelain through the gas supply and pressure booster tube In the quality pipe body, it can effectively prolong the positive pressure protection time of the bushing, further improve the insulation performance of the bushing, significantly enhance the safety performance, and can also remind the staff that there are cracks in the bushing, which greatly facilitates the casing Crack detection.

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & AuthorityPatents(China)
IPC IPC(8): H01F27/32H01F27/40H01B17/58F16J15/06
CPCF16J15/06H01B17/583H01F27/324H01F27/402
Inventor郭山河
Owner广东金特变压器有限公司