Electrode bar for grounding

A technology of grounding electrodes and rods, applied in the direction of connecting contact materials, etc., can solve the problems of difficult installation and construction, scratches on the copper layer or insufficient mechanical strength, etc., and achieves the effect of good airtightness.

Inactive Publication Date: 2008-07-16
陈国雄
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the whole rod body is a copper rod containing more than 99.6% copper, its mechanical strength is insufficient, and it is difficult to hammer into the ground for installation and construction, and the price is expensive without economic and practical benefits.
[0004] However, the following problems still exist in the production and on-site construction of copper-clad steel rods and copper-clad steel rods: during construction, whether it is copper-clad steel rods or copper-clad steel rods, if the ground is too hard or broken when driven into the ground Stone, copper layer will be scratched or glass, once the copper layer is scratched, the steel rod will corrode and expand, causing the copper layer to peel off, losing the grounding effect, the most serious is that the copper layer will peel off immediately
If stones or hard objects are encountered, the steel rod will deviate from the bend, and the copper layer will be scratched and damaged, which will cause the steel rod to corrode and expand. In addition to causing the copper layer to peel off, due to insufficient burial depth, it is impossible to obtain a small resistance. Then increase the setting of grounding rods in series until the measured resistance meets the requirements, which will increase the number of grounding rods and setup costs
For copper-plated steel rods, the thickness of copper plating is extremely uneven for the circumference of the rod during the electroplating process. If the minimum thickness value is required at each point, the difference between the maximum and minimum points at each point is about 0.254 to 0.402 Between mm, the quality control of the thickness of the copper layer is very difficult, and the rod will crack from the thinnest copper layer. Corrosion of steel, and the density of the copper-plated copper layer is low, and pinholes cannot be avoided. When moisture containing electrolyte penetrates into this place, it will cause galvanic (galvanic) corrosion caused by the combination of copper and steel. The steel gradually corrodes and expands, the copper layer is cracked and peeled off, and the grounding effect is lost
Because the copper-plated steel rod has the problem of pinhole corrosion, and there is no copper layer at the head and tail of the rod body, the copper-plated steel rod has congenital unfavorable state and corrosion weakness due to the copper plating technology and the design structure of the rod body. Therefore, the coating Unevenness will increase the chance of scratching the copper layer during construction and induce pinhole corrosion
For copper-clad steel rods, although there is no uneven thickness of the copper layer, and because of the high density of the copper layer, there is no problem of pinhole corrosion, but due to the manufacturing technology, the copper layer and the steel rod cannot be completely bonded, and the water vapor after installation It will infiltrate from the head and tail of the rod body or the scratched part, causing the steel rod to corrode and expand, cracking the copper layer, and losing the grounding effect
[0005] Copper-plated steel rods and copper-clad steel rods have been difficult to effectively and properly improve the problems in the manufacturing industry so far, so that copper-plated steel rods are used in the power industry and copper-clad steel rods are used in the telecommunications industry. None changed

Method used

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  • Electrode bar for grounding
  • Electrode bar for grounding
  • Electrode bar for grounding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Example 1, see figure 1 , The figure shows a grounding electrode rod, which includes a cylindrical rod body 1, the rod body is a copper-plated steel rod, copper-clad steel rod or other metal rod body, set at one end of the rod body 1 There is a ground-boring safety cone 2, and a hammer condom 3 is provided at the other end. The hammered condom 3 is cylindrical, one end of which is opened with a cylindrical first cavity (cavity A) 31 that is adapted to the end of the rod body 1; it has the same shape as the end of the cylindrical rod body 1 For adaptation, the inner diameter of the first cavity (cavity A) 31 of the hammer condom 3 and the outer diameter of the end of the rod 1 are transitional fit, and the gap is 0.05-0.10 mm. The safety cone 2 for earth boring includes a cone-shaped head 21 and a cylindrical tail 22 for connecting with the rod body 1. The end surface of the cylindrical tail part 22 is provided with a second end that is adapted to the other end of the rod b...

Embodiment 2

[0040] Example 2, see figure 2 , 2A And 2B, the figure shows a grounding electrode rod. The difference from the previous embodiment is that the second cavity (cavity B) 23 of the ground-boring safety cone 2 is a slightly tapered cone. The taper of the hole is 1:30, and the taper hole 23 is more closely connected with the end of the cylindrical rod 1. Similarly, in order to make the connection between the hammered condom 3 and the rod 1 tight, the first cavity (cavity A) 31 of the hammered condom may be a slightly tapered cone-shaped hole with a taper of 1:30. Another difference is that the outer surfaces of the drill safety cone 2 and the hammer condom 3 are respectively provided with a number of second ditch (earth ditch B) 26 and first ditch 36, the distribution density of which is per centimeter of the circumference Length 1-25; in this embodiment, there are 10 second earthen ditch (earth ditch B) 26 and first earthen ditch (earth ditch A) 36 respectively. The first earthen di...

Embodiment 3

[0041] Example 3, see image 3 , The figure shows a grounding electrode rod. The difference from implementation 1 is that the safety cone 2 and the hammer condom 3 can be threaded to the two ends of the rod body 1, and the safety cone 2 is in the cylindrical shape. The second cavity (cavity B) 23 of the tail 22 and the first cavity (cavity A) 31 of the hammer condom are screw holes 25 and 32. The two ends of the rod body 1 are provided with external threads 14 And 12; another difference is that: the hammer condom 3 is a hexagonal prism shape, that is, a hexagonal nut with one end closed, the columnar tail 22 of the ground boring safety cone 2 is a hexagonal prism shape, and The cone-shaped head 21 is in the shape of a hexagonal pyramid, see Figure 3A with 3 B.

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Abstract

An electrode bar of devices utilized in electric power distribution wire includes the bar body, the hammer safety guard setup at one end of the bar body and the drill safety pyramid at the other end of the bar. The outside diameters of the safety guard and the drill safety pyramid are larger than the outside diameter of the bar so as to protect the bar from scores caused in hammer processes passing through crushed stone layers. Thus, the grounding electrode bar is wholly installed under ground effectively, solving the problem happened in constructions. The electrode bars are also possible to be as lightning rods with good tightness in the head and tail parts so that water and gases would not enter the head and tail parts providing better corrosion preventive effects than traditional lightning rods.

Description

Technical field [0001] The invention relates to a grounding electrode rod of equipment on a power distribution line. technical background [0002] The grounding electrode rod is a kind of grounding electrode, which is used to ground various electrical, electronic, telecommunications and other equipment, power and telecommunications lines, and buildings (also used as lightning rods). The grounding electrode allows the abnormal current to flow to the ground through the grounding electrode to ensure the normal operation of various settings and the safety of the lives of the general public. For the stable growth of the national economy and the protection of the lives and property of the general public, it has a very important and important contribution. Therefore, grounding occupies a very important position and necessary conditions in the electrical field, and it is indispensable. Grounding is divided into two categories. One is strong current grounding, which is used for safety pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01R4/66
Inventor 陈国雄
Owner 陈国雄
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