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Drought geological grounding grid and water retention and resistance reduction construction method thereof

A construction method and technology of grounding grid, applied in the direction of connection, connection contact material, electrical components, etc., can solve problems such as increased engineering volume and cost

Active Publication Date: 2016-11-23
ELECTRICAL SERVICE & ELECTRIFICATION ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In arid geology, if the above three methods cannot meet the design requirements, it is necessary to deepen the grounding electrode and extend the grounding grid; this will greatly increase the amount of engineering and cost

Method used

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  • Drought geological grounding grid and water retention and resistance reduction construction method thereof
  • Drought geological grounding grid and water retention and resistance reduction construction method thereof
  • Drought geological grounding grid and water retention and resistance reduction construction method thereof

Examples

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Effect test

Embodiment 1

[0013] Example 1, such as figure 1 versus figure 2 Shown: a grounding grid in arid geology, including vertical grounding pole 1, horizontal grounding body 2, grounding lead wire 5 and lightning rod 3; also includes multiple grounding trenches; vertical grounding pole 1 is several, horizontal grounding body 2 is multiple , See image 3 , A horizontal grounding body 2 is fixed in each grounding trench; the grounding trench width w is 400mm, and the grounding trench depth h1 is 1500mm; several vertical grounding electrodes 1 and multiple horizontal grounding bodies 2 are placed on the periphery of the lightning rod 3 and grounded horizontally The two ends of the body 2 are fixedly connected to the upper end of the vertical grounding pole 1, and are connected to the grounding lead wire 5 near the lightning rod 3 by hot melt. The grounding lead wire 5 is connected to the lightning rod 3, and the vertical grounding pole 1 is vertically arranged under the grounding trench and grounded ...

Embodiment 2

[0015] Embodiment 2, a construction method for water retention and resistance reduction of arid geological grounding grid, including the following steps: a. Determine the laying path of horizontal grounding body and vertical grounding electrode; b. Excavation of grounding trench; c. Making horizontal grounding body and vertical grounding electrode And installation; d. Making and installing the grounding lead wire of the grounding grid; e. Wrap resistance reducing agent; f. Prepare to backfill the fine soil mixed with water-retaining agent; g. Backfill and compact the grounding trench. The specific method is detailed as follows:

[0016] a. Determine the laying path of the horizontal grounding body and the laying path of the vertical grounding electrode: Before construction, determine the laying path of the horizontal grounding body and the laying position of the vertical grounding electrode according to the design drawings and the actual situation of the construction site, and use...

Embodiment 3

[0024] Example 3, this example is the same as Example 2, but in step e, when the resistance reducing agent is wrapped, the resistance reducing agent and water are mixed in a weight ratio of 0.5:1.0.

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Abstract

The invention provides a drought geological grounding grid comprising vertical grounding electrodes, horizontal grounding bodies, a grounding lead-out wire and a lightning rod. The drought geological grounding grid also comprises multiple grounding trenches. There are multiple vertical grounding electrodes. There are multiple horizontal grounding bodies. One horizontal grounding body is fixedly arranged in one grounding trench. The multiple vertical grounding electrodes and the multiple horizontal grounding bodies are arranged at the periphery of the lightning rod. The two ends of the horizontal grounding bodies are fixedly connected with the upper ends of the vertical grounding electrodes and connected with the grounding lead-out wire at the position of being close to the lightning rod. The grounding lead-out wire is connected with the lightning rod. The two ends of another part of the horizontal grounding bodies are fixedly connected with the upper ends of the vertical grounding electrodes. The vertical grounding electrodes are vertically arranged below the grounding trenches. The upper ends of the vertical grounding electrodes are higher than the bottom of the grounding trenches. The horizontal grounding bodies and the upper ends of the vertical grounding electrodes are wrapped by a resistance reduction agent layer. A mixed water retention agent fine soil layer is laid on the bottom part of the grounding trenches. A common backfill soil layer is arranged on the mixed water retention agent fine soil layer. The drought geological grounding grid is mainly used for the substation grounding grid of drought areas so that the laying depth of the grounding electrodes can be greatly reduced.

Description

Technical field [0001] The invention belongs to grounding grid construction in the field of electric power construction, and specifically relates to a grounding grid for arid geology. The invention also relates to a construction method for water retention and resistance reduction of arid geological grounding grid. Background technique [0002] Due to the high soil resistivity in arid geology, reducing the grounding resistance of the grounding grid has always been an industry problem. The current methods for reducing the grounding resistance of the grounding grid include: 1. Using resistance reducing agents; 2. Using ion grounding modules; 3. Using soil ion additives. In arid geology, if the above three methods fail to meet the design requirements, it is necessary to deepen the ground electrode and extend the grounding grid; this will greatly increase the amount of engineering and cost. Summary of the invention [0003] Aiming at the problem of high soil resistivity in arid geolog...

Claims

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Application Information

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IPC IPC(8): H01R4/66H01R43/00
Inventor 张彬程永和
Owner ELECTRICAL SERVICE & ELECTRIFICATION ENG
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