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A polytetrafluoroethylene composite material, an arc extinguishing nozzle and its preparation method, and a high-voltage circuit breaker

A technology of polytetrafluoroethylene and arc extinguishing nozzle, which is applied in the field of high-voltage circuit breakers, can solve the problems of poor arc ablation resistance and low thermal conductivity, achieve excellent mechanical properties and high temperature resistance, high decomposition temperature, and reduce The effect of ablation

Active Publication Date: 2017-05-31
PINGGAO GRP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a polytetrafluoroethylene composite material, and at the same time provides an arc extinguishing nozzle using the above polytetrafluoroethylene composite material, which solves the problems of low thermal conductivity and poor arc ablation resistance of the existing composite material nozzle

Method used

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  • A polytetrafluoroethylene composite material, an arc extinguishing nozzle and its preparation method, and a high-voltage circuit breaker
  • A polytetrafluoroethylene composite material, an arc extinguishing nozzle and its preparation method, and a high-voltage circuit breaker
  • A polytetrafluoroethylene composite material, an arc extinguishing nozzle and its preparation method, and a high-voltage circuit breaker

Examples

Experimental program
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Effect test

Embodiment 1

[0024] The polytetrafluoroethylene composite material of this embodiment is composed of the following components in weight percentage: 7% cobalt aluminate, 1% boron nitride, and the balance is polytetrafluoroethylene resin.

[0025] The arc extinguishing nozzle of this embodiment adopts the above-mentioned polytetrafluoroethylene composite material. The structure of the arc extinguishing nozzle is as follows figure 1 As shown, 1 is the throat of the nozzle, the breaking process of the high-voltage circuit breaker is completed inside the nozzle, and the throat 1 of the nozzle is ablated.

[0026] The preparation method of the arc extinguishing nozzle of the present embodiment comprises the following steps:

[0027] 1) Take polytetrafluoroethylene resin powder, disperse and grind it, and mix polytetrafluoroethylene resin powder with a particle size of 45 μm, cobalt aluminate powder with a particle size of 1 μm, and nitriding powder with a particle size of 5 μm according to the ...

Embodiment 2-12

[0032] For the polytetrafluoroethylene composite material of Examples 2-12, the weight percentage of each component is shown in Table 1.

[0033] The weight percent of each component of the polytetrafluoroethylene composite material of table 1 embodiment 2~12

[0034]

[0035]

[0036] The structure of the arc extinguishing nozzle using the polytetrafluoroethylene composite material of Examples 2-12 is the same as that of Example 1.

[0037] The arc extinguishing nozzles of Examples 2-12 were prepared by mixing, molding and sintering using the proportions of the components shown in Table 1. See Table 2 for the particle size of raw materials and the test conditions for mixing, molding and sintering.

Embodiment 2～12

[0038] Table 2 Embodiment 2~12 preparation process conditions of arc extinguishing nozzle

[0039]

[0040] The structure of the high-voltage circuit breaker using the arc extinguishing nozzles described in Embodiments 2 to 12 is the same as that of Embodiment 1.

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Abstract

The invention discloses a Teflon composite material, an arc extinguishing nozzle, a preparation method of the arc extinguishing nozzle and a high-voltage circuit breaker. The Teflon composite material comprises, by weight, 7-15% of cobalt aluminate, 1-15% of boron nitride and the balance Teflon. The arc extinguishing nozzle is prepared from the Teflon composite material. The arc extinguishing nozzle is prepared from the Teflon composite material filled with inorganic filler cobalt aluminate and boron nitride. Through reasonable adjustment of a filling ratio, nozzle material thermal conductivity is obviously improved, material arc ablation resistance is improved and excellent mechanical properties are obtained. The arc extinguishing nozzle can improve breaker interruption performances so that high-voltage circuit breaker operation stability is improved.

Description

technical field [0001] The invention belongs to the technical field of high-voltage circuit breakers, and specifically relates to a polytetrafluoroethylene composite material, an arc-extinguishing nozzle using the composite material and a preparation method thereof, and also relates to a high-voltage circuit breaker with the arc-extinguishing nozzle. Background technique [0002] High pressure SF 6 As an important power equipment in the power system, the circuit breaker is currently developing towards high voltage and large capacity, and the requirements for providing power energy stability and operational reliability 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 gas medium strength and the arc extinguishing ability. When the circuit breaker ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/18C08K3/24C08K3/38B29C69/02
CPCB29C69/02C08K3/24C08K3/38C08K2003/385C08L27/18C08L2203/20
Inventor 袁端鹏林生军郝留成张翀田浩李继承罗军
Owner PINGGAO GRP
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