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Hollow aluminum alloy tube grounding device capable of being assembled

A technology of aluminum alloy tube and grounding device, which is applied in the direction of connecting contact materials, etc., can solve the problems of poor corrosion resistance of steel, grounding corrosion and fracture, and high engineering cost, so as to improve the electrical characteristics of the soil, increase the contact area, The effect of increasing the service life

Inactive Publication Date: 2013-09-25
CHINA THREE GORGES UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the material used in the grounding design is hot-dip galvanized round steel or flat steel. However, due to the weak corrosion resistance of steel in the soil, the consumption is large and the service life is short, it is prone to accidents caused by grounding corrosion and fracture.
At the same time, in order to solve the problem of tower grounding in areas with high soil resistivity, a large round steel or flat steel grounding network must be used, which requires a large amount of construction work and also faces corrosion problems
For this reason, there are currently some new materials or structures such as conductive cement or grounding modules, such as "a resistance-reducing grounding module" with patent No. ", but these methods are expensive, and even have the problem of environmental damage

Method used

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  • Hollow aluminum alloy tube grounding device capable of being assembled
  • Hollow aluminum alloy tube grounding device capable of being assembled
  • Hollow aluminum alloy tube grounding device capable of being assembled

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044]An assemblable hollow aluminum alloy tube grounding device, which includes a closed ring 1 made of aluminum alloy, 4 sets of grounding bodies 2 connected to the closed ring, the unit grounding body 3 in the grounding body 2 is a hollow tubular structure, and its outer The diameter is 39mm, and the inner diameter is 32mm. One end of the unit grounding body is welded to the closed ring, and the other end is connected to the outside by a sleeve.

[0045] According to the needs, the grounding body can be extended radially in the horizontal plane by using the axial bushing, the horizontal size of the grounding body can be expanded by using the "Y" type bushing, or the vertical extension of the grounding body can be made by using the "T" type bushing. Any combination of the three bushings can also be used in one grounding body at the same time.

[0046] During construction, when the device is located in an area with a soil resistivity of 1500Ω·m or more, the length of each gro...

Embodiment 2

[0049] China Three Gorges University and Sanmenxia Power Supply Company of Henan Provincial Electric Power Company conducted on-site measurement on April 25, 2013 for the reconstruction project of the 63# tower grounding device of the 110kV Zhuming Line around Lushi and Lingbao in the south of Sanmenxia. One of the legs of the tower was backfilled with large stones The ground grid is difficult to dig; the other 3 are extended with two ground connection plates, the ground grid at each leg is buried at a depth of about 1m, the soil quality is the surface layer of 100-450mm soil, and the bottom is rocky mountain or rock-concrete, so it is impossible to install a vertical ground electrode . Therefore, the "Y" structure assembled grounding device is adopted, and the measured soil resistivity is 1673Ω·m. The grounding body of the hollow aluminum alloy tube is 216m in total, and the total length of the grounding body is 216m. Assemble, share 8 "Y" type bushings, and the measured grou...

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Abstract

A hollow aluminum alloy tube grounding device capable of being assembled comprises a closed loop. Multiple groups of grounding bodies are welded on the closed loop. Each grounding body comprises at least one unit grounding body, and the unit grounding bodies are connected through matched sleeves and are hollow aluminum alloy tubes. The sleeves are one kind or several kinds of axial sleeves, Y-type sleeve and T-type sleeves. Four groups of grounding bodies are welded on the closed loop, one end of each grounding body is welded on the closed loop, and the other end of each grounding body can be extended according to needs through the sleeves. Each unit grounding body is 1m long, threads are machined at the two ends of each unit grounding body, and threads matched with the two ends of the unit grounding bodies are arranged in the sleeves. Each grounding body is of a hollow aluminum alloy tubular structure, so the hollow aluminum alloy tube grounding device is light in weight, good in electrical conductivity and thermal conductivity, and strong in corrosion resistance; an assembled structure is adopted, so the hollow aluminum alloy tube grounding device is convenient to transport, easy to construct, and suitable for various environments due to the fact that multiple sleeves are adopted.

Description

technical field [0001] The invention belongs to the technical field of lightning protection and grounding for high-voltage transmission line engineering, and in particular relates to an assemblable hollow aluminum alloy tube grounding device. Background technique [0002] With the development of the economy, the connection between society and electricity is getting closer, and the requirements for the reliability of power supply are getting higher and higher. However, high-voltage transmission lines have long distances, large spans, wide geographical distribution, and very complicated meteorological conditions, so the probability of tripping and power outages caused by lightning strikes is very high. Especially with the development of science and technology, the reduction of overvoltage inside the power system and the reduction of accidents caused by it, the line tripping accident caused by lightning strikes occupies an increasingly important position, which poses a major th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01R4/66
Inventor 唐波田新光张翼朱建雄刘佩东张鹏平田华鑫贺鹏黄颖
Owner CHINA THREE GORGES UNIV
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