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A Composite Insulator Umbrella Structure

A technology of composite insulators and umbrellas, which is applied in the field of external insulation technology and equipment for ultra-high voltage overhead transmission lines, can solve the problems of less research on the umbrellas of tensile composite insulators, and achieve improved pollution flashover resistance, self-cleaning capabilities, and optimized electrical effect

Inactive Publication Date: 2016-08-24
新疆新能天宁电工绝缘材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are relatively few studies on the umbrella shape of tensile composite insulators at home and abroad.

Method used

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  • A Composite Insulator Umbrella Structure

Examples

Experimental program
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Effect test

Embodiment 1

[0018] like figure 1 As shown, a composite insulator umbrella structure described in the embodiment of the present invention includes a mandrel 4, a sheath 3, several large sheds 1 with equal diameters and several small sheds 2 with equal diameters. The large sheds 1 and 2 small umbrella skirts arranged alternately, sheath diameter d 3 is 53 mm, mandrel diameter d 4 is 40mm, the sheath thickness is 6.5mm, and the diameter of the shed is d 1 178mm, small shed diameter d 2 150 mm, umbrella spacing L 1 70mm, minimum umbrella spacing L 2 35 mm, the umbrella of the large umbrella skirt protrudes L 3 62.5mm, the umbrella of the small umbrella skirt protrudes L 4 is 48.5mm, the inclination angle θ of the upper umbrella 1 and the inclination angle θ of the umbrella 2 Both are 92.7°, and the chamfering radius R of the umbrella root is 8mm; the included angle θ between the large shed 1 and the small shed 2 3 Both are 5.3°, and the thickness of the root of the large shed 1 is t ...

Embodiment 2

[0024] The difference between this embodiment and embodiment 1 is the sheath diameter d 3 45.06mm, mandrel diameter d 4 is 34.86mm, then the thickness of the sheath is 5.1mm, and the diameter of the large shed is d 1 is 151.3 mm, and the diameter of the small shed is d 2 127.5 mm, umbrella spacing L 1 59.5mm, minimum umbrella spacing L 2 29.75 mm, the umbrella of the large umbrella skirt protrudes L 3 53.12mm, the umbrella of the small umbrella skirt protrudes L 4 is 41.22mm, the inclination angle θ of the upper umbrella 1 and the inclination angle θ of the umbrella 2 Both are 78.8°, and the chamfering radius R of the umbrella root is 6.8mm. The angle θ between the big shed 1 and the small shed 2 3 Both are 4.5°, and the thickness t of the shed root of the large shed 1 1 is 7.41 mm, and the thickness of the shed edge of the large shed 1 is t 2 is 4.04mm.

Embodiment 3

[0026] The difference between this embodiment and embodiment 1 is the sheath diameter d 3 is 60.94 mm, mandrel diameter d 4 is 47.14mm, the sheath thickness is 6.9mm, and the diameter of the large shed is d 1 is 204.7 mm, and the diameter of the small shed is d 2 172.5 mm, umbrella spacing L 1 80.5mm, minimum umbrella spacing L 240.25 mm, the umbrella of the large umbrella skirt protrudes L 3 71.88mm, the umbrella of the small umbrella skirt protrudes L 4 is 55.78mm, the inclination angle θ of the upper umbrella 1 and the inclination angle θ of the umbrella 2 Both are 106.6°, and the chamfer radius R of the umbrella root is 9.2 mm. The angle θ between the big shed 1 and the small shed 2 3 Both are 6.1°, and the thickness t of the shed root of the large shed 1 1 is 10.03 mm, and the thickness of the shed edge of the large shed 1 is t 2 It is 5.46mm.

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Abstract

The invention discloses a composite insulator umbrella-shaped structure, which includes a mandrel, a sheath, a large umbrella skirt and a small umbrella skirt, the large umbrella skirts and the small umbrella skirts are arranged alternately, the diameter of the large umbrella skirt is 151.3-204.7 mm, and the diameter of the small umbrella skirt is 151.3-204.7 mm. is 127.5~172.5 mm, the umbrella spacing is 59.5~80.5mm, the minimum umbrella spacing is 29.75~40.25 mm, the large umbrella skirt umbrella extension is 53.12~71.88mm, the small umbrella skirt umbrella extension is 41.22~55.78mm, the upper umbrella inclination angle The inclination angle to the lower umbrella is 78.8°~106.6°, and the chamfer radius of the umbrella root is 6.8~9.2 mm. The invention can optimize the electric field distribution of each shed on the composite insulator, avoid high potential difference near the shed, and the symmetrical umbrella structure is beneficial to improve the self-cleaning ability of the tensile composite insulator, improve the pollution flashover voltage of the composite insulator, and improve Pollution flashover resistance of tension strings of transmission lines.

Description

technical field [0001] The invention relates to the field of external insulation technical equipment for ultra-high voltage overhead transmission lines, in particular to a composite insulator umbrella structure. Background technique [0002] At present, the idea of ​​using insulators in our country still stays on the design concept of "composite for straight lines, porcelain and glass for tension strings". The work is more complicated when using porcelain and glass insulators for tension strings, except for adding too many insulator sheets. In addition, it is necessary to adjust the sag of the wire and consider the force of the tower. Therefore, the lack of anti-fouling flashover capability of the tension string has become increasingly apparent. At the same time, the porcelain insulators used in the tension string need to be regularly checked and cleaned, and the maintenance cost is high. [0003] At this stage, it is common to use composite insulator tension strings on 220k...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B17/04H01B17/48H01B17/38
Inventor 李启源
Owner 新疆新能天宁电工绝缘材料有限公司
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