CN2172513Y

CN2172513Y - Umbrella insulator

Info

Publication number: CN2172513Y
Application number: CN 93240763
Authority: CN
Inventors: 梁振海
Original assignee: Tianjin Guanghua New Insulating Material Tech Development Co
Current assignee: Tianjin Guanghua New Insulating Material Tech Development Co
Priority date: 1993-09-30
Filing date: 1993-09-30
Publication date: 1994-07-20
Anticipated expiration: 2003-09-30

Abstract

The utility model relates to an electric porcelain insulating device. A unit between the quarter of the length and the third of the length of the bottom part of an electric porcelain insulator is glued with an increasing climbing umbrella skirt. The first unit of the upper part of the electric porcelain insulator can be also glued with a rainproof umbrella skirt. The utility model can prevent the accident of the electric discharge of the pollution flashover of the electric porcelain insulator of the high voltage electric power system such as 10KV, 35KV, 110KV and even 220KV according to the electric field principle, the gluing position which is determined through the condition of the field intensity distribution which is changed by the increasing climbing umbrella skirt in the electric field and the design of the dimension of the umbrella skirt. The utility model has the advantages of simple and easy construction, low cost and high ability of the prevention of the pollution flashover which is proved by the experiment.

Description

Umbrella insulator

The utility model relates to the seal of high-voltage electric power system, the seal of the anti-pollution flashover of especially a kind of electroceramics.

Because the pollution in harsh climate condition and the atmosphere day by day increases the outdoor insulative requirement of strength of high-tension electricity facility, to prevent pollution flashover accident, Chinese patent 88201095 and 91206200 has proposed abswolute level according to circuit voltage at this problem and will increase the structure of climbing high potential unit that full skirt is bonded in insulator and each unit equal distribution, bonding multilayer full skirt, all has certain practical function, but the former is applicable to the electric power system of 10KV, the latter construct become to put down high, difficulty is big.

The purpose of this utility model provides that a kind of construction is simple, cost is low, and can adapt to more than the 10KV, and even the electric power system of 220KV increases the new construction of climbing full skirt to a kind of improved the installing additional of the requirement of the anti-pollution flashover ability of electric porcelain insulator.

Realize that the above-mentioned purpose technical scheme is:

Bonding a slice increases and climbs full skirt (2) on the unit of 1/4th to 1/3rd B of place from bottom to top of each element length summation A of electric porcelain insulator (1), and its umbrella cover width C is not less than to increase and climbs full skirt (2) and go up 3.5 to 4 times of port radius D.

Umbrella cover lap-joint (3) is suitable for reading to be not less than 10 millimeters, and end opening is not less than 30 millimeters, and bonding back is fastening with insulated bolt (4).

Also can be same as to increase and climb full skirt (2) in its size of the bonding rainproof full skirt in the uppermost unit of electric porcelain insulator (5).

Further specify the technical program below in conjunction with drawings and Examples:

Thickness is 1.5 millimeters electric heating EPGC-I type laminated epoxy glass-cloth board, and radius of circle is 53 millimeters in cutting is made, the annular material that exradius is 218 millimeters to 230 millimeters, and to cut angle be 36 ℃ fanning strip, in lap-joint's drilling; With gluing after the 4th unit wiping from bottom to top of the 110KV electric porcelain insulator (1) of standard, the earlier bonding lap-joint (3) of climbing full skirt (2) that increases also uses insulated bolt (4) fastening, interior circle is 10 millimeters of overlap joints suitable for reading, end opening is 40 millimeters of cylindrical overlap joints, increasing the end opening of climbing full skirt (2) is that outside diameter E is 416 to 460 millimeters, and increasing after will overlapping again climbs full skirt (2) and be bonded in electric porcelain insulator (1) Unit the 4th.

Being the bonding size in uppermost unit in the first module of electric porcelain insulator (1) climbs the identical rainproof full skirt of full skirt (2) (5) with increasing.

The utility model utilizes the electric field theory analysis to increase and climbs the influence of full skirt to electric-field intensity distribution, and confirm to climb full skirt insulator length overall bonding the increasing in 1/4th to 1/3rd places from bottom to top through test, can in the electric power system of 35KV, 110KV, effectively prevent the generation of pollution flashover accident, identical be connected in series electric power system mutually applicable to 220KV through the bonding electric porcelain insulator of climbing full skirt that increases with two.

The utility model also can be applicable to fail, the indoor use of power distribution station.

Remarkable advantage of the present utility model is: simple in structure, construction is easy, and cost is low; Can effectively prevent to prevent in a large number the generation of dirty valve accident because harsh weather and the extreme natural environments such as humidity, condensation, filth, corrosion cause the pollution flashover discharge of electric porcelain insulator and the leakage of creeping.

Claims

1, a kind of installing additional increases the insulator of climbing full skirt, by insulator (1), increase and climb full skirt (2) composition, it is characterized in that: bonding a slice increases and climbs full skirt (2) on the unit of 1/4th to 1/3rd B of place from bottom to top of each element length summation A of electric porcelain insulator (1), and its umbrella cover width C is not less than to increase and climbs full skirt (2) and go up 3.5 to 4 times of port radius D.

2, a kind of installing additional as claimed in claim 1 increases the insulator of climbing full skirt, it is characterized in that: the described umbrella cover lap-joint (3) of climbing full skirt (2) that increases, suitable for readingly be not less than 10 millimeters, and end opening is not less than 30 millimeters, and bonding back is fastening with insulated bolt (4).

3, a kind of installing additional as claimed in claim 1 increases the insulator of climbing full skirt, it is characterized in that: the uppermost unit of described insulator (1) can bonding rainproof full skirt (5), and its size is same as to increase climbs full skirt (2).