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Arc extinction nozzle for high-voltage breaker and preparation method thereof

A high-voltage circuit breaker and arc extinguishing nozzle technology, which is applied in the manufacture of circuit breaker components, circuits, emergency protection devices, etc., can solve the problems of poor arc ablation resistance and low thermal conductivity of the nozzle, and achieve excellent mechanical properties and High temperature resistance, improved operation stability, improved breaking performance

Active Publication Date: 2015-03-04
HENAN PINGGAO ELECTRIC +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an arc extinguishing nozzle for a high-voltage circuit breaker, which solves the problems of low thermal conductivity and poor arc ablation resistance of existing composite material nozzles

Method used

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  • Arc extinction nozzle for high-voltage breaker and preparation method thereof

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Embodiment 1

[0017] The arc extinguishing nozzle for a high voltage circuit breaker in this embodiment includes the following components in weight percentage: 5% aluminum nitride, 8% boron nitride, and the balance is polytetrafluoroethylene resin.

[0018] The preparation method of the arc extinguishing nozzle for the high voltage circuit breaker of the present embodiment comprises the following steps:

[0019] 1) Take polytetrafluoroethylene resin powder, disperse and grind it, and mix polytetrafluoroethylene resin powder with a particle size of 45 μm, aluminum nitride powder with a particle size of 2 μm, and nitrided aluminum powder with a particle size of 1 μm according to the formula. After the boron powder is initially mixed, it is placed in a high-speed mixer for final mixing (the rotating speed is 500r / min, and the time is 20min) to obtain a compound;

[0020] 2) adding the mixture obtained in step 1) into a mold for compression molding, the molding pressure is 20MPa, and the mold i...

Embodiment 2

[0023] The arc extinguishing nozzle for a high voltage circuit breaker in this embodiment includes the following components in weight percentage: 10% aluminum nitride, 1% boron nitride, and the balance is polytetrafluoroethylene resin.

[0024] The preparation method of the arc extinguishing nozzle for the high voltage circuit breaker of the present embodiment comprises the following steps:

[0025] 1) Take polytetrafluoroethylene resin powder, disperse and grind it, and mix polytetrafluoroethylene resin powder with a particle size of 80 μm, aluminum nitride powder with a particle size of 8 μm, and nitrided aluminum powder with a particle size of 3 μm according to the formula. After the boron powder is initially mixed, it is placed in a high-speed mixer for final mixing (the rotating speed is 500r / min, and the time is 20min) to obtain a compound;

[0026] 2) adding the mixture obtained in step 1) into a mold for compression molding, the molding pressure is 25MPa, and the mold ...

Embodiment 3

[0029] The arc extinguishing nozzle for the high voltage circuit breaker of this embodiment includes the following components in weight percentage: 7% of aluminum nitride, 10% of boron nitride, and the balance is polytetrafluoroethylene resin.

[0030] The preparation method of the arc extinguishing nozzle for the high voltage circuit breaker of the present embodiment comprises the following steps:

[0031] 1) Take polytetrafluoroethylene resin powder, disperse and grind it, and mix polytetrafluoroethylene resin powder with a particle size of 60 μm, aluminum nitride powder with a particle size of 5 μm, and nitrided aluminum powder with a particle size of 2 μm according to the formula. After the boron powder is initially mixed, it is placed in a high-speed mixer for final mixing (the rotating speed is 500r / min, and the time is 20min) to obtain a compound;

[0032] 2) adding the mixture obtained in step 1) into a mold for compression molding, the molding pressure is 30MPa, and t...

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Abstract

The invention discloses an arc extinction nozzle for a high-voltage breaker and a preparation method thereof. The arc extinction nozzle comprises the following components in percentage by weight: 5%-10% of aluminum nitride, 1%-15% of boron nitride and the balance of polytetrafluoroethylene resin. According to the arc extinction nozzle disclosed by the invention, inorganic fillers of the aluminum nitride and the boron nitride are compounded and stuffed in composite polytetrafluoroethylene materials, and the stuffing proportion is reasonably allocated, so that the heat conductivity of nozzle materials is obviously improved, the electric arc erosion resistance of the materials is improved, and moreover, the arc extinction nozzle has an excellent mechanical property and a high temperature resistant property. The arc extinction nozzle is used for arc extinguish chambers of an open type breaker, a pot type breaker and a breaker of an all-metal closed type combined electric appliance, and the breaking-closing property of the breaker is improved, so that the operating stability of high-voltage switch equipment is improved.

Description

technical field [0001] The invention belongs to the technical field of high-voltage circuit breakers, in particular to an arc-extinguishing nozzle for a high-voltage circuit breaker, and at the same time relates to a preparation method for an arc-extinguishing nozzle for a high-voltage circuit breaker. Background technique [0002] High pressure SF 6 As an important power equipment in the power system, circuit breakers are developing towards high voltage and large capacity. In order to provide more stable and high-quality electric energy, the requirements for the reliability of circuit breakers are getting higher and higher. SF 6 The nozzle of the arc extinguishing chamber of the circuit breaker controls the flow of the blowing gas during the breaking process, which directly affects the SF in the nozzle during the breaking process. 6 The recovery characteristics of the dielectric strength of the gas and the arc quenching ability, the degree of arc ablation during use direc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/18C08K3/28C08K3/38H01H73/18H01H69/00
CPCB29C43/58B29C67/04C08K3/28C08K3/38C08K2003/282C08K2003/385C08K2201/003H01H69/00H01H73/18C08L27/18
Inventor 袁端鹏林生军郝留成陈卓田浩罗军赵军建
Owner HENAN PINGGAO ELECTRIC
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