Multi-functional ground concrete rod

Abstract

The invention discloses a multi-functional ground concrete rod. The multi-functional ground concrete rod comprises a concrete rod body and a connection wire special for grounding, which is arranged in the rod body; the rod body is formed by pouring concrete and a reinforcement layer in the rod body; the multi-functional ground concrete rod is characterized in that: at least one built-in bolt hole special for grounding is pre-embedded in the side wall of the rod body; the bolt holes special for grounding are exposed out of the rod body and is flush with the outer wall of the rod body; a rod bottom metal waterproof grounding cover is sleeved on the outer wall of the lower end of the rod body; a built-in bolt hole for a grounding electrode is pre-embedded in the bottom of the rod bottom metal waterproof grounding cover; and the connection wire special for grounding is connected in series with the built-in bolt holes special for grounding in the side of the rod body respectively, and then is connected to the built-in bolt hole of the rod bottom metal waterproof grounding cover. By the multi-functional ground concrete rod, the ground resistance of an overhead line electric pole can be reduced obviously, the corrosion of a grounding device is inhibited, the installing and using requirements of the line outage protective grounding wire can be met, and the theft and damage accidents of an electric grounding device can be avoided.

Description

technical field [0001] The invention relates to a multi-power transmission equipment, in particular to a multifunctional grounding cement pole. Background technique [0002] As we all know, the important significance of the grounding device of overhead transmission line pole tower is overvoltage protection. It must have reliable grounding to accelerate the spread of grounding current, reduce the rise of ground potential, and protect line insulation. In "Electrical Installation Engineering Grounding Device Construction And Acceptance Specifications" GB50169-92 "Electrical Installation Engineering Grounding Installation Construction and Acceptance Specifications", "Industrial and Civil Electrical Installation Grounding Design Specifications" (GBJ65-83) have relevant requirements. In recent years, the grounding resistance of overhead transmission line poles and towers exceeds the standard. Due to the shallow buried depth of the grounding body, the grounding resistance is large....

AI Technical Summary

Problems solved by technology

In recent years, the grounding resistance of overhead transmission line poles and towers exceeds the standard. Due to the shallow buried depth of the grounding body, the grounding resistance is large. There are many screw connection points in the grounding device, and its contact resistance is large. Pole-mounted vacuum circuit breakers and other equipment are equipped with copper grounding. Therefore, if theft occurs and damages the power grounding down-conductor, the impact and equipment damage will become greater and greater, which will greatly affect the safe and stable operation of the line.

At the same time, the corrosion of the grounding down conductor and the grounding body is a common problem in the grounding device of the transmission line tower, which will cause the grounding resistance to rise, the cross section cannot meet the thermal stability of the short-circuit current, and some grounding wires are corroded and broken, causing the pole to lose grounding The phenomenon

For example, the utility model disclosed in Chinese Patent Application No. 200620092684.3 discloses a cement electric pole. A water-blocking cover is added to prevent formation water from pouring into the cavity of the utility pole, thereby preventing frost damage at the bottom of the utility pole, prolonging the service life of the utility pole, and preventing collapse due to freezing and thawing. It cannot reduce the grounding resistance, delay the corrosion of the grounding device, and curb the occurrence of theft and damage accidents of the electric grounding device; in addition, a cement utility pole disclosed in the invention patent application with the Chinese patent No. 201010108762.5, its structure includes a rod body. There is a cavity in the axial direction of the rod body. The rod body is made of steel bars and concrete. The steel bars include vertical steel bars and hoops placed on the vertical steel bars. The bottom of the vertical steel bars is welded with a ring-shaped bottom of the bar body. An annular metal ring with a matching shape, and a metal block is welded on the bottom surface of the annular metal ring. The inside of the rod body is to be welded with an annular steel ring for measuring whether the line in the rod is connected. Although the utility pole with the above-mentioned structure can form the grounding end of the grounding wire by connecting the steel bar in the pole body through the convex column of the annular steel ring and the grounding wire of the lightning arrester installed on the pole body, the manufacturing process is cumbersome and the cost is high.

For a long time, people have been looking for a method to effectively reduce resistance, prevent corrosion, and prevent grounding wires from being stolen, such as: using galvanized flat irons to connect with grounding angle irons. Not only does the method always fail to achieve the desired effect, but the phenomenon of theft of the grounding wire is even intensified. It is often stolen as soon as it is installed, causing the power supply company to fall into the vicious circle of "stolen, reinstalled, and stolen again", resulting in huge losses.

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