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Composite graphite grounding material with low skin effect and preparation method for composite graphite grounding material

A skin effect, composite grounding technology, applied in the direction of connecting contact materials, carbon-silicon compound conductors, cable/conductor manufacturing, etc., to achieve good corrosion resistance, simple preparation process, and reduce step voltage and contact voltage.

Active Publication Date: 2014-01-08
WUHAN HONGMEN ELECTRICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems existing in the lightning protection grounding body of the existing power system, the present invention provides a low-skin effect graphite composite grounding material with corrosion resistance, good conductivity, good flexibility and low price and a preparation method thereof

Method used

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  • Composite graphite grounding material with low skin effect and preparation method for composite graphite grounding material
  • Composite graphite grounding material with low skin effect and preparation method for composite graphite grounding material
  • Composite graphite grounding material with low skin effect and preparation method for composite graphite grounding material

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Embodiment 1

[0071] In this embodiment, the flexible inner core is a rubber tube with an outer diameter of 20 mm and an inner diameter of 12 mm. 48 first composite graphite wires are evenly arranged around the flexible inner core, and glass fibers are arranged between the upper and lower worm graphite layers of the first composite graphite ribbon for twisting the first composite graphite wires. A graphite composite grounding material with a diameter of about 33 mm is obtained by using 24 second composite graphite wires through double-track cross braiding. 12 glass fibers and 1 Kevlar fiber of 600D model are arranged between the upper and lower worm graphite layers of the second composite graphite tape of twisting the second composite graphite wire; the graphite wire tension of the second graphite composite wire of the gained single strand is 15N.

Embodiment 2

[0073] In this embodiment, the flexible inner core is a nylon rope with a diameter of 20mm. 48 first composite graphite wires are evenly arranged around the flexible inner core, and 12 glass fibers and 1 nickel fiber are arranged between the upper and lower worm graphite layers of the first composite graphite tape for twisting the first composite graphite wires . A graphite composite grounding material with a diameter of about 33 mm is obtained by using 24 second composite graphite wires through double-track cross braiding. 12 glass fibers and 1 Kevlar fiber of 600D model are arranged between the upper and lower worm graphite layers of the second composite graphite tape of twisting the second composite graphite wire; the graphite wire tension of the second graphite composite wire of the gained single strand is 15N.

Embodiment 3

[0075] In this embodiment, the flexible inner core is a polyethylene / PE plastic rope with a diameter of 25mm. 56 first composite graphite wire plates are evenly arranged around the flexible inner core, and 12 glass fibers and 1 nickel wire are arranged between the upper and lower worm graphite layers of the first composite graphite tape for twisting the first composite graphite wire. fiber. A graphite composite grounding material with a diameter of about 40 mm is obtained by using 24 second composite graphite wires through double-track cross braiding. 12 glass fibers and 1 Kevlar fiber of 600D type are arranged between the upper and lower worm graphite layers of the second composite graphite tape of twisting the second composite graphite wire; the graphite wire tension of the second composite graphite wire of the gained single strand is 15N.

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Abstract

The invention discloses a composite graphite grounding material with a low skin effect and a preparation method for the composite graphite grounding material. The composite graphite grounding material is shaped into a rope or a stranded wire, and comprises a flexible inner core, a second outer composite graphite yarn layer and an outermost composite graphite yarn braided layer, wherein the flexible inner core is wrapped by the second outer composite graphite yarn layer; the second outer composite graphite yarn layer is wrapped by the outermost composite graphite yarn braided layer. The composite graphite grounding material has the advantages of high corrosion resistance, high electrical conductivity, high flexibility, low skin effect, low cost, easiness for transportation, high precision of bonding with soil and the like; the composite graphite grounding material is low in cost, so that the composite graphite grounding material can be prevented from being artificially stolen and damaged, and is applied to all engineering fields of transformer substations, overhead power transmission line towers, high-rise buildings and the like with electrical grounding requirements.

Description

[0001] technical field [0002] The invention relates to the technical field of lightning protection and grounding for power systems, in particular to a low-skin effect graphite composite grounding material and a preparation method thereof. Background technique [0003] The power grounding system is an important facility to ensure the safe and reliable operation of power equipment. The grounding body of the current power equipment mainly has the following deficiencies: (1) Serious corrosion. Generally, the metal grounding body is expected to have a service life of 20 years, and some even have been severely corroded within 3 to 5 years. (2) High cost. Copper metal with better anti-corrosion effect is expensive and is rarely used in China. (3) The tightness with the soil is not high. Due to its own hard and brittle characteristics, the metal grounding body is not tightly combined with the soil during the laying process, the contact resistance is large, and it is easy to fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/04H01B5/12H01R4/66H01B13/00
Inventor 阮江军胡元潮龚若涵
Owner WUHAN HONGMEN ELECTRICAL TECH CO LTD
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