A device and method for treating the surface of pot insulators with glow discharge fluoridation

A basin-type insulator and glow discharge technology, applied in insulators, circuits, electrical components, etc., can solve the problems of complex processing procedures, increase in insulator manufacturing costs and cycle, etc., and achieve easy promotion, improved insulation performance, and improved flashover voltage. Effect
CN105913984BInactive Publication Date: 2017-06-23XI AN JIAOTONG UNIV +3
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XI AN JIAOTONG UNIV
Publication Date
2017-06-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a device and a method for processing surfaces of a basin-type insulator by means of glow discharge fluorination. The method comprises the steps of: cleaning and drying the basin-type insulator, placing the basin-type insulator in a sealed cavity body, and connecting upper and lower parts of the basin-type insulator with two electrodes; vacuumizing the sealed cavity body by utilizing a vacuum pump, and filling the cavity body with low-pressure SF6 gas; and adjusting power-frequency voltage amplitude applied on the electrodes so as to produce glow discharge of the SF6 gas, utilizing a current meter for recording a current value of a loop, and utilizing plasma generated by the glow discharge for carrying out fluorination processing on the surface of the basin-type insulator for a period of time. The device and the method adopt the SF6 glow discharge plasma for carrying out fluorination processing on the surface of the basin-type insulator, the discharging current is small, the voltage amplitude is low, the basin-type insulator cannot be damaged, and the surface flashover voltage of the basin-type insulator can be greatly increased in a short time; and the device and the method have the advantages of being simple in operation, safe and efficient, low in cost and the like.
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Description

technical field

[0001] The invention belongs to SF 6 The invention relates to the field of insulation protection of metal-enclosed switchgear (GIS), in particular to a device and method for treating the surface of pot insulators with glow discharge fluorination. Background technique

[0002] SF 6 Metal-enclosed switchgear (GIS) inside with SF 6 As an insulating medium, gas has good insulating properties and is more and more widely used in power systems. In the connecting busbar of GIS, the pot insulator plays an important role in isolating the air chamber, supporting the conductor and insulating, etc., but because its breakdown field strength along the surface is lower than the gap breakdown field strength under the same conditions, it is also lower than that of the same size The breakdown field of the insulator is strong, so the surface of the pot insulator is the weak part of the insulation of the GIS equipment. In fact, the surface flashover phenomenon of pot insulato...

Claims

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