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Transformer low-voltage busbar sheath production method

A technology for the low-voltage side of transformers and production methods, which is applied in the direction of transformers/inductor coils/windings/connections, electrical components, insulators, etc., and can solve problems such as frequent short-circuit tripping and power outages, inability to ensure long-term reliability, and aging resistance , to achieve excellent electrical insulation performance, save power outage time, and simple construction methods

Active Publication Date: 2014-09-10
HEBEI SILICON VALLEY CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, short-circuit trips and power outages frequently occur on the low-voltage side busbars of transformers due to small animals and foreign objects overlapping between phases. The original heat-shrinkable insulation sleeves need to be disassembled and put on heat-shrinkable insulation sleeves, which are heated on site at high temperature. Bake the sheath until it shrinks before installing the device
It is labor-intensive and time-consuming, and because it is not resistant to aging, its reliability cannot be guaranteed for a long time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0006] The invention comprises the following steps: 10-25 parts by weight of fluorine-containing polydimethylsiloxane, 40-50 parts by weight of polydimethylsiloxane containing vinyl, and 10-20 parts by weight of reinforcing filler , 1-5 parts by weight of treated para-aramid short fiber pulp, 10-30 parts by weight of anti-electric loss filler and 1-3 parts of pigment are mixed, and the mixture is mixed in a banbury machine with a pressure of <0.2Mpa at 110°C The middle roll is practiced for 4 hours, taken out and coiled on the open mill and parked for soaking for a week, adding 1-3 parts by weight of vulcanizing agent to the parked and soaked mixture on the open mill, back milled and thinned three times, and passed through the twin-screw extruder Refining, then through extrusion molding machine, extruding at 400-600°C high temperature, calendering, traction forming, and finally second-stage vulcanization in 200-300°C vulcanization furnace for 10-20 minutes to get the busbar she...

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PUM

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Abstract

The invention relates to a transformer low-voltage busbar sheath production method. The transformer low-voltage busbar sheath production method includes steps of utilizing fluorosilicone para-aramid rubber compound as raw materials, retaining the raw materials in a first-stage sulfurization box at 600 DEG C through a screw extruder and a sheath die for 5-10 minutes, shaping and sulfurizing, retaining in a two-stage sulfurization box at 300 DEG C for 10-20 minutes, and curing at high temperature. The transformer low-voltage busbar sheath production method is good in insulation performance, simple in process and convenient to use.

Description

technical field [0001] The invention relates to a production method for a sheath, in particular to a production method for a busbar sheath on the low-voltage side of a transformer. Background technique [0002] At present, short-circuit tripping and power outage accidents frequently occur on the low-voltage side busbars of transformers due to small animals and foreign objects overlapping between phases. The original heat-shrinkable insulation sleeves need to be disassembled and put on heat-shrinkable insulation sleeves, which are heated on site at high temperature. Bake the sheath until it shrinks before installing the device. It is labor-intensive and time-consuming, and because it is not resistant to aging, its reliability cannot be guaranteed for a long time. Contents of the invention [0003] In order to overcome the disadvantages of the prior art, the invention provides a method for producing a transformer low-voltage side busbar sheath, which has good insulation per...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B19/00H01F27/32B29C69/00
Inventor 宋福如林国强宋志强支峰
Owner HEBEI SILICON VALLEY CHEM CO LTD
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