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Arc extinguishing nozzle and preparation method thereof

A technology of arc extinguishing nozzle and polytetrafluoroethylene, which is applied in the direction of high-voltage air circuit breaker, high-voltage/high-current switch, electrical components, etc., can solve the problem of high material cost, achieve the goal of improving overall performance, saving sintering time, and improving efficiency Effect

Active Publication Date: 2020-01-07
HENAN PINGGAO ELECTRIC +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All parts of the arc extinguishing nozzle of the high-voltage circuit breaker disclosed in this patent have the same formula system, and the material cost is relatively high under the same specification conditions

Method used

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  • Arc extinguishing nozzle and preparation method thereof
  • Arc extinguishing nozzle and preparation method thereof
  • Arc extinguishing nozzle and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0042] The arc extinguishing nozzle of this embodiment is a functional gradient type arc extinguishing nozzle, and the structure is as follows figure 1 shown. The arc extinguishing nozzle is obtained by cutting an arc extinguishing nozzle blank, and includes an inner functional layer 1 and an outer functional layer 2 . The structure of the arc extinguishing nozzle blank is as follows figure 2 As shown, it includes an inner functional layer 1 and an outer functional layer 2 arranged radially from inside to outside. The inner functional layer is composed of polytetrafluoroethylene and molybdenum disulfide, wherein molybdenum disulfide accounts for 0.3% of the mass of the inner functional layer. The outer functional layer is composed of polytetrafluoroethylene and boron nitride, wherein boron nitride accounts for 5% of the mass of the outer functional layer.

[0043] The preparation method of the arc extinguishing nozzle of the present embodiment comprises the following steps...

Embodiment 2

[0049] The arc extinguishing nozzle of this embodiment is a functional gradient type arc extinguishing nozzle, and the structure is as follows figure 1 shown. The arc extinguishing nozzle is obtained by cutting the arc extinguishing nozzle blank. The structure of the arc extinguishing nozzle blank is as follows: figure 2 As shown, it includes an inner functional layer 1 and an outer functional layer 2 arranged radially from inside to outside. The inner functional layer is composed of polytetrafluoroethylene and molybdenum disulfide, wherein molybdenum disulfide accounts for 0.2% of the mass of the inner functional layer. The outer functional layer is composed of polytetrafluoroethylene and boron nitride, wherein boron nitride accounts for 8% of the mass of the outer functional layer.

[0050] The preparation method of the arc extinguishing nozzle of the present embodiment comprises the following steps:

[0051] 1) According to the size of the inner and outer functional lay...

Embodiment 3

[0056] The arc extinguishing nozzle of this embodiment is a functional gradient type arc extinguishing nozzle, and the structure is as follows figure 1 shown. The arc extinguishing nozzle is obtained by cutting the arc extinguishing nozzle blank. The structure of the arc extinguishing nozzle blank is as follows: figure 2 As shown, it includes an inner functional layer 1 and an outer functional layer 2 arranged radially from inside to outside. The inner functional layer is composed of polytetrafluoroethylene and molybdenum disulfide, wherein molybdenum disulfide accounts for 0.5% of the mass of the inner functional layer. The outer functional layer is composed of polytetrafluoroethylene and boron nitride, wherein boron nitride accounts for 3% of the mass of the outer functional layer.

[0057] The preparation method of the arc extinguishing nozzle of the present embodiment comprises the following steps:

[0058] 1) According to the size of the inner and outer functional lay...

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Abstract

The invention relates to an arc extinguishing nozzle and a fabrication method thereof, and belongs to the technical field of a high-voltage circuit breaker. The arc extinguishing nozzle comprises an internal functional layer and an external functional layer which are sequentially arranged along a radial direction, wherein the internal functional layer comprises an ablation-promotion inorganic filler and polytetrafluoroethylene, the external functional layer comprises an ablation-resistant inorganic filler and the polytetrafluoroethylene or the external functional layer is the polytetrafluoroethylene, the ablation-promotion inorganic filler is molybdenum disulfide, and the ablation-resistant inorganic filler is boron nitride. In the arc extinguishing nozzle, the internal functional layer and the external functional layer are arranged and employ different material formulas; the internal functional layer employs the polytetrafluoroethylene and the ablation-promotion inorganic filler, andablation gas generation can be effectively facilitated; the external functional layer employs the polytetrafluoroethylene and the ablation-resistant inorganic filler, and the ablation-resistant performance of the arc extinguishing nozzle can be ensured; and the internal functional layer and the external functional layer are combined and perform a synergic effect, and the integral performance of the arc extinguishing nozzle is greatly improved.

Description

technical field [0001] The invention relates to an arc extinguishing nozzle and a preparation method thereof, belonging to the technical field of high-voltage circuit breakers. Background technique [0002] The arc extinguishing nozzle is mainly used in the arc extinguishing chamber of the high-voltage switch circuit breaker. It is responsible for blowing out the arc during the opening and closing process of the circuit breaker. The arc extinguishing nozzle is required to have functions such as ablation resistance, gas production, and mechanical toughness. The arc extinguishing nozzle is SF 6 One of the important parts in the interrupter of the circuit breaker. In the process of breaking the fault current of the circuit breaker, the nozzle that moves at high speed with the moving contact instrument is subjected to 4×10 3 The ablation of the high-temperature arc above K and the reaction force of the compressed gas in the cylinder; it is a high-speed, high-pressure SF 6 Gas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H33/22H01H11/00C08L27/18C08K3/30C08K3/38B29C67/04
CPCB29C67/04C08K3/30C08K3/38C08K2003/3009C08K2003/385H01H11/00H01H33/22C08L27/18
Inventor 杨保利吴明清王晶张佩荆娟王玉杰卢银花
Owner HENAN PINGGAO ELECTRIC
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