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Resistance-reducing composition and application to soil thereof

A composition and resistance reduction technology, applied in conductive materials, conductors, conductive materials and other directions, can solve the problems that chemical resistance reducing agents cannot play a role in resistance reduction, long effective time and high cost, and achieve long-term effectiveness increase, The effect of preventing moisture loss and long service life

Active Publication Date: 2013-07-10
STATE GRID CORP OF CHINA +2
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  • Abstract
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Problems solved by technology

However, since the metal salt ions in the chemical drag reducing agent will quickly dissolve and lose with the erosion of rainwater and groundwater, the drag reducing effect usually only lasts for two to three years. It is closely related, in the cold climate or frozen soil in the north, the chemical drag reducing agent will not be able to reduce the drag
The physical resistance reducing agent mainly reduces the grounding resistance by changing the size of the electrode, and is not affected by terrain, geology and climate, but can always maintain the stability of the grounding resistance, and because its conductive ions are free electrons, the effective time is usually The effective time is longer than chemical drag reducers, but because it contains some special alloys and other substances, the cost is higher

Method used

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  • Resistance-reducing composition and application to soil thereof

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Embodiment Construction

[0015] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below in conjunction with examples.

[0016] In a typical implementation of the present invention, a drag-reducing composition is provided, which comprises, in parts by weight: 90-95 parts of bentonite; 5-10 parts of bentonite; the resistivity of 0.1-0.15Ω· m's grounding enhancement material.

[0017] The bentonite in the drag-reducing composition of the present invention has strong water absorption and water retention properties. After absorbing water, the bentonite becomes paste-like, which can effectively lock water and prevent water loss. In addition, the bentonite will expand to its original volume after absorbing water. It can form a stable contact with the soil around the grounding body, which can reduce the influence of contact resistance on the meas...

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Abstract

The invention provides a resistance-reducing composition and application to soil thereof. The resistance-reducing composition comprises, by weight, 90-95 parts of bentonite, and 5-10 parts of grounding reinforcing materials with specific resistance of 0.1-0.15 ohm meter. According to the technical scheme, after the bentonite and the grounding reinforcing materials with the specific resistance of 0.1-0.15 ohm meter are mixed, resistance-reducing capacities of the bentonite are optimized by utilizing the low specific resistance of the grounding reinforcing materials, water-retaining properties of the bentonite are utilized at the same time so that the low specific resistance of the grounding reinforcing materials and superiorities of long-term effectiveness are brought into full play and geometric dimensions of a grounding electrode are further increased, and therefore the grounding resistance is lowered. As the grounding reinforcing materials and the bentonite are mixed for being used, the use amount of the grounding reinforcing materials of high cost is reduced.

Description

technical field [0001] The invention relates to the technical field of conductive materials, in particular to a resistance-reducing composition and its application in soil. Background technique [0002] The resistance reducing agent is a composite material used for grounding devices to wrap around the horizontal and vertical grounding electrodes and has the function of reducing grounding resistance. Its own resistivity is low, which can reduce the contact resistance between the electrode and the soil and prolong the service life of the grounding device. [0003] At present, the commonly used resistance reducing agents include chemical resistance reducing agents and physical resistance reducing agents. The main resistance reducing mechanism of chemical resistance reducing agents is to increase the concentration of conductive ions in the soil with the penetration of resistance reducing agents, and improve the soil resistance around the grounding body. Rate. The main componen...

Claims

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Application Information

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IPC IPC(8): H01B1/00H01R4/66
Inventor 张锐
Owner STATE GRID CORP OF CHINA
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