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Manufacturing method of open-air limestone mine power supply system grounding device

A technology of power supply system and grounding device, which is applied in the direction of circuits, connections, electrical components, etc., and can solve problems such as non-compliance with energy saving and emission reduction, production cost increase, etc.

Inactive Publication Date: 2021-02-09
GANSU JIU STEEL GRP HONGXING IRON & STEEL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, measures such as externally expanded grounding grids, deep well grounding electrodes, multi-layer grounding or electrolytic ion grounding electrodes are used to reduce grounding resistance, which doubles the production cost and does not meet the national energy saving and emission reduction requirements.

Method used

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  • Manufacturing method of open-air limestone mine power supply system grounding device
  • Manufacturing method of open-air limestone mine power supply system grounding device
  • Manufacturing method of open-air limestone mine power supply system grounding device

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Embodiment Construction

[0026] The features and performances of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0027] Such as figure 2 with Figure 4 As shown, here we take a certain actual size as an example to illustrate this method. The excavation depth of the foundation pit is h1+h2=4.5m, the width d6=6m, the length d5=30m, the distance between the ground electrodes 1 in the width direction d4=2m, and the distance in the long direction Spacing d3=3m, radius of cylindrical area r=0.25m, diameter d1=0.5m, depth h3=0.3m, formwork width and length d2 both 0.2m, height h1=0.4m.

[0028] Such as figure 1 with image 3 As shown, a method for making a grounding device for an open-pit limestone mine power supply system includes the following steps:

[0029] S1. Select an area with relatively low resistivity in the open-pit stope through testing, and excavate a grounded foundation pit in this area. The length of the foun...

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Abstract

The invention provides a manufacturing method of a open-air limestone mine power supply system grounding device, and belongs to the technical field of power supply system grounding. The manufacturingmethod comprises the following steps: excavating a foundation pit in a low-resistivity area, embedding a grounding electrode into the foundation pit, circumferentially fixing flat iron on the outer side of the upper part of the grounding electrode, and manufacturing a conductive tip at the bottom by using conductive powder, adopting a resistance reducing agent outside the grounding electrode, andfinally subjecting the remaining area of the foundation pit to backfilling till the foundation pit is flat; the open-air limestone mine power supply system grounding device manufactured by the methodcan avoid the problems of frequent occurrence of equipment accidents and safety production accidents caused by lack of grounding of an open-air stope power supply system or imperfection of a groundingsystem.

Description

technical field [0001] The invention belongs to the technical field of power supply system grounding, and in particular relates to a method for manufacturing a grounding device for an open-pit limestone mine power supply system. Background technique [0002] The grounding grid system is a grounding grid, which is a general term for a grounding body composed of multiple metal grounding electrodes buried at a certain depth underground and connected by conductors to form a mesh structure. It is widely used in many industries such as electric power, construction, computer, industrial and mining enterprises, communication, etc., and plays the role of safety protection and shielding. [0003] The grounding of the open-pit stope power supply system is the premise and basis for ensuring the normal operation of the stope mining equipment. Especially for mines in high altitude and severe cold areas, the grounding of open pit power supply system becomes more and more important. Acros...

Claims

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Application Information

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IPC IPC(8): H01R43/00H01R4/66
CPCH01R4/66H01R43/00
Inventor 任毅沈珍鹏
Owner GANSU JIU STEEL GRP HONGXING IRON & STEEL CO LTD
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