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Combined complete grounding equipment and grounding construction method

A kind of grounding equipment and combined technology, applied in the direction of connecting contact materials, etc., can solve the problems that the position of the iron tower is not fixed, cannot meet the complex and changeable grounding construction requirements, and the soil resistivity is different, and achieve the effect of meeting the grounding requirements

Inactive Publication Date: 2020-02-28
XUCHANG SIDA ELECTRIC POWER EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, during the construction of high-voltage iron towers in China, when the line is designed, the high-voltage iron towers usually pass through areas with less population. The grounding conductors are usually connected directly to the bottom of the iron towers with flat steel, and then buried in the ground bypassing the foundation of the iron towers. This structure Simple, convenient construction, low cost, but general resistance reduction effect
And because the position of the iron tower is not fixed, the soil resistivity of its location is also different, and the use of fixed grounding devices has been unable to meet the complex and changeable grounding construction requirements.

Method used

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  • Combined complete grounding equipment and grounding construction method
  • Combined complete grounding equipment and grounding construction method
  • Combined complete grounding equipment and grounding construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] As shown in the figure: a combined grounding equipment set, with:

[0044] Armored graphite down conductor, armored graphite down conductor is composed of connecting terminal and graphite down conductor, graphite down conductor includes stainless steel core plate, flexible graphite braid wrapped outside the stainless steel core plate and wrapped Stainless steel braided protective layer outside the flexible graphite braiding layer, one end of the graphite down-conductor is crimped with the connection end, the other end of the graphite down-conductor is the graphite grounding strap connection end, and the graphite down-conductor is sleeved with insulation layer.

[0045] Armored graphite down conductors include cable armored graphite down conductors and ribbon armored graphite down conductors. The diameter of cable armored graphite down conductors is 20mm or 28mm, and ribbon armored graphite The size of the down conductor is 40cm*5cm or 60cm*8cm. The stainless steel cor...

Embodiment 2

[0054] A method for grounding construction using a combined set of grounding equipment: measuring the resistivity of the soil around a subway tower to be grounded;

[0055] If the resistivity of the soil is less than or equal to 1000Ω·m, dig square ditches around the four tower legs of the iron tower, then connect the connecting end of the armored graphite down conductor to the tower legs of the iron tower, and use a clamp to connect the graphite grounding strip Connect with the other end of the armored down conductor, spread a layer of graphite cloth or graphite blanket on the bottom of the ditch, and then spread the graphite grounding belt on the graphite cloth or graphite blanket, and fill the ditch.

[0056] The soil resistivity of most terrains is about 100Ω•m. After construction around the iron tower, it is required to reduce the grounding resistance to less than 15Ω. For a transformer with a capacity of 100KW, it is required to reduce the grounding resistance to below 4Ω...

Embodiment 3

[0064] A method for grounding construction using a combined set of grounding equipment: measuring the resistivity of the soil around a subway tower to be grounded;

[0065] If the resistivity of the soil is greater than 1000Ω·m, dig a square trench along the four tower legs of the iron tower, then connect the connecting end of the armored graphite down conductor to the tower legs of the iron tower, and use a clamp to connect the graphite grounding strip Connect with the other end of the armored down-conductor, lay a layer of graphite cloth or graphite blanket on the bottom of the ditch, and then dig radiation ditches at the four corners or the middle points of the four sides of the square ditch. Lay the graphite belt and graphite cloth, and connect the graphite grounding module or the quick-installed ion grounding electrode through the clamp on the graphite belt.

[0066] The above method can also be referred to as "enclosed frame + ray + graphite grounding module + quick-inst...

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Abstract

The invention relates to combined complete grounding equipment, which is provided with an armored graphite downlead, a graphite grounding belt, a reinforced grounding belt, graphite cloth, a graphiteblanket, a fast-assembled ion grounding electrode, a graphite grounding module and graphite paste. The armored graphite downlead is composed of a connecting end and a graphite downlead. The graphite downlead comprises a stainless steel core plate, a flexible graphite braided layer wrapped outside the stainless steel core plate and a stainless steel braided protective layer wrapped outside the flexible graphite braided layer; and one end of the graphite downlead and the connecting end are crimped together, and the other end of the graphite downlead is a graphite grounding belt connecting end. The combined complete grounding equipment comprises grounding parts in various forms; and different grounding modes and construction modes can be selected according to different construction environments and grounding construction requirements, and the combined complete grounding equipment is flexible, efficient and capable of meeting the grounding requirements of existing complex and changeable power equipment.

Description

technical field [0001] The invention relates to the technical field of electric equipment grounding, in particular to a combined grounding equipment and a grounding construction method. Background technique [0002] With the development of China's economy, electricity has become one of the necessary conditions to promote development. For power workers, it is of great significance to ensure the high quality and high stability of power supply. Transmission lines are usually located in open outdoor areas, and the transmission lines of high-voltage transmission projects are usually erected on the top of taller iron towers. [0003] In areas where lightning activities are relatively dense in the coastal areas of China, if lightning strikes the transmission line, it will cause the transmission line to trip or be damaged, affecting the continuity and stability of the transmission line. In order to avoid lightning strikes, there is a lightning protection device on the upper part a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01R4/66
CPCH01R4/66
Inventor 陈瑞斌陈四甫陈见甫胡松江赵振岭务孔永赵磊成张国锋张明磊邢远朱义华曾杰
Owner XUCHANG SIDA ELECTRIC POWER EQUIP