CN2399805Y

CN2399805Y - High voltage insulator able to indicate flashover fault

Info

Publication number: CN2399805Y
Application number: CN 99256718
Authority: CN
Inventors: 寻凯; 何成华
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-12-23
Filing date: 1999-12-23
Publication date: 2000-10-04
Anticipated expiration: 2009-12-23

Abstract

The utility model relates to a high voltage insulator which can be used for indicating flashover faults. A porcelain petticoat of the high voltage insulator is coated with organic composite materials and inorganic composite materials to form a cover film. The color of the cover film is obviously distinguished with the color of the substrate of the porcelain petticoat. After flashover faults are generated, the cover film is burned off by an electric arc in a high temperature way, and the color of the exposed porcelain petticoat is obvious different from the primary color of the cover film to indicate the flashover faults. The utility model has the advantages that the faults are convenient to find quickly and accurately, the efficiency of maintenance is improved, and the labor intensity of aloft work is relieved. The potential distribution and the insulating property of the utility model are constant.

Description

A kind of high-tension insulator of indicating arcing fault

A kind of high-tension insulator of indicating arcing fault relates to the insulator that uses on a kind of high-voltage electric power circuit.

At present, the insulator that uses in the high-voltage electric power circuit on-line operation, under thunder and lightning, internal overvoltage or filthy cause influence, after causing insulator power frequency earth fault flashover, the fault point is difficult to find quickly and accurately, cause can not in time analyzing the qualitative difficulty of failure cause, the failure judgement reason is also taked correspondingly maintenance measures.Generally speaking, the method that search the fault point is in GPS navigation system and fault localization indicating range, step on bar by base in the open air by the workman, observe and confirm whether to have obvious flashover burn vestige, but because flashover path, short circuit current size and power supply length action time difference, so that the flashover burn is uncertain, so, also be easy to the under-enumeration fault point sometimes even step on the bar inspection.

The purpose of this utility model is, a kind of new insulator is provided, and solves the problem of the difficult inspection of arcing fault point omission in the high-voltage electric power circuit.

Technical solutions of the utility model are as follows: will be a kind of on the porcelain patticoat of traditional typing high-tension insulator surface organic and inorganic composite materials applies or mold pressing covers insulator dielectric surface formation one deck coverlay.The color of this one deck composite material coverlay and the matrix color of porcelain patticoat should have tangible difference.The utility model in use, owing to reasons such as thunder and lightning, switching overvoltage and power frequency pollution cause insulator string power frequency ground connection flashover, this insulator porcelain patticoat overlay film top layer will be burnt under the high arc temperature effect, expose the color of insulator dielectric matrix and the obviously difference mutually of coverlay primary colors, and indicate arcing fault with this.

Advantage of the present utility model is: 1, the power circuit attendant can accurately find the fault point rapidly, has improved overhaul efficiency.2, the warn mode of indication arcing fault of its variable color makes line attendant need not step on tower can to find the fault point rapidly on ground, alleviate maintenance worker's work high above the ground labour intensity.3, the porcelain patticoat coverlay have hydrophobicity, ageing-resistant, resistance to wear.4, the same national standard that meets with common high-tension insulator of electric property does not have influence to the Potential distribution and the insulation level of whole or bunch of insulator.

Description of drawings: Fig. 1 is a general assembly drawing, and steel cap 1 is wherein arranged,

cement glue

2 and 6, porcelain patticoat 3, organic and inorganic composite materials film 4, (because skirt section 4 films are very thin, the position that is attached on the porcelain patticoat 3 with its dress indicates with dotted line) steel pin 5.

Embodiment: manufacture and design high-tension insulator by national standard; To porcelain or toughened glass matter porcelain patticoat, adopt die pressing, infusion process, spraying process or spread coating technology, application is by organic and inorganic material composite material coverlay; Its membrane material main component is: silicon dioxide (particulate or ultra-fine grain) colloidal sol commodity, resistivity is not less than 1 * 10 ¹⁶The insulating resin of ohmcm or its powder (epoxy, polyester, phenolic commodity), silicone plasties colloidal sol, (adhesive can adopt phenolic aldehyde, urea aldehyde adhesive commodity, is used for the product of pottery as 201-204 adhesive, shrinked aldehyde drying glue etc.), inorganic pigment (iron black, ultramarine); Be coated with one of method: adhesive 70%, silicone plasties 10%-20%, silica 1 0%-20%, inorganic pigment is a small amount of, and ≯ 1%; Normal temperature and pressure mixes down; Again with impregnation mixture on porcelain patticoat, dry; Put into the baking oven heating cure 2 hours with condition under 160 ℃ and the normal pressure, can use behind the natural cooling.Spendable synthetic adhesive comprises: series of products such as the JW of epoxies, SW, E, CJ, HY; The anchor board of polyurethane kind and phenolic and urea aldehydes and Great Wall card series product.

Claims

1, a kind of high-tension insulator of indicating arcing fault, by steel cap 1, porcelain patticoat 3, steel pin 5, and fill with cement glue and to make, it is characterized in that: 4 places, skirt section of porcelain patticoat 3 scribble the coating coverlay of being made up of organic and inorganic material.

2, a kind of high-tension insulator of indicating arcing fault according to claim 1, it is characterized in that: coverlay is by silica 1 0%-20%; Silicone plasties 10%-20%; Phenolic aldehyde or urea aldehyde adhesive stick 70%; Small amounts of inorganic pigment, compositions such as (iron oxide black or ultramarine ≯ 1%) mix to be formed.

3, according to claim 1 and 2 described a kind of high-tension insulators of indicating arcing fault, it is characterized in that: used phenol formaldehyde tackifier is the 201-204 adhesive; Or shrinked aldehyde drying glue.