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Resistance reduction mud and preparation method thereof

A resistance-reducing and resistivity-reducing technology, which is applied in the direction of cable/conductor manufacturing, conductive materials dispersed in non-conductive inorganic materials, electrical components, etc. Solve problems such as soil and groundwater pollution, achieve the effect of reducing the critical field strength, enhancing the spark effect, and not easy to lose

Inactive Publication Date: 2016-03-09
国网吉林省电力有限公司超高压公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there are still many problems in the actual use of drag reducing agents: the drag reducing effect is unstable; with the passage of time and the flow of groundwater, the drag reducing agent will slowly lose and the drag reducing effect will weaken; the drag reducing effect will vary with the soil quality. The change of water content fluctuates greatly, and the drag reduction effect is greatly reduced when the soil is dry
In addition, there are often some acid-base salt ions in the drag reducer, and the lost drag reducer will pollute the soil and groundwater near the use area

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 50% by weight of graphite flakes, 5% by weight of high-conductivity metal powder and 40% by weight of bentonite are fully mixed by mechanical stirring, and then 5% by weight of polyacrylic acid-based water-absorbing resin is added. Mix well to get the drag-reducing mud of the present invention.

[0024] Add water before use to make the drag-reducing mud into a gel-like material. After curing, its resistivity is about 1.2Ω·m, and the critical field strength of the discharge of the spark effect is reduced to 1kV / cm.

Embodiment 2

[0026] 60% by weight of flake graphite, 5% by weight of high-conductivity metal powder and 30% by weight of bentonite are thoroughly mixed by mechanical stirring, and then 5% by weight of polyacrylic acid-based water-absorbing resin is added for Fully mix to get the drag-reducing mud of the present invention.

[0027] Add water before use to make the drag-reducing mud into a gel-like material. After curing, test its resistivity to be about 0.5Ω·m, and the discharge critical field strength of the spark effect will drop to 1kV / cm.

Embodiment 3

[0029] 70% by weight of flake graphite, 1% by weight of high-conductivity metal powder and 20% by weight of bentonite are fully mixed by mechanical stirring, and then 9% by weight of polyacrylic acid-based water-absorbing resin is added for thorough mixing , to obtain the drag-reducing mud of the present invention.

[0030] Before use, add water to make the drag-reducing mud into a gel-like material. After curing, test its resistivity to be about 0.2Ω·m, and the critical field strength of the discharge of the spark effect will drop to 2kV / cm.

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Abstract

The present invention discloses a resistance reduction mud and a preparation method thereof. The resistance reduction mud comprises, by weight, 20% to 40% of bentonite, 50% to 70% of flake graphite, 1% to 5% high conductivity metal powders and 5% to 10% of polyacrylic acid-based water-absorbing resin. The resistivity of the high conductivity metal powders is lower than 1*10-6 omega*m. The resistance reduction mud has the advantages of high conductivity, little possibility of loss, the enhancement of sparkle effect, and stable resistance reduction effect and can be applied to a power system lightning protection and grounding project.

Description

technical field [0001] The invention relates to the technical field of lightning protection and grounding of electric power systems, in particular to a drag-reducing mud and a preparation method thereof. Background technique [0002] The lightning protection grounding device of power equipment in my country's power system is an important facility to ensure the safety and stability of the power system and the personal safety of power construction personnel. Low grounding resistance, long-term stability without corrosion, and low operation and maintenance costs are the goals of the power system grounding device. [0003] Transmission lines often pass through some areas with high soil resistivity. At this time, due to soil quality, it is difficult to reduce the grounding resistance of transmission line towers to the specified requirements. In addition, when a lightning fault occurs in the power system, the duration of the lightning current is very short, generally no more than ...

Claims

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Application Information

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IPC IPC(8): H01B1/22H01B1/24H01B13/00
CPCH01B1/22H01B1/24H01B13/00
Inventor 高波杨羽尹维崴程永生赵雪松谢佳男万帅刘刚徐霞龚若涵
Owner 国网吉林省电力有限公司超高压公司
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