Overhead conductor insulation sleeve
A technology of insulating sleeves and overhead wires, which is applied in the direction of insulators, etc., can solve the problems of large wire phase intervals, high tower loads, and large insulator string volumes, and achieve the effect of reducing phase intervals, compact transmission lines, and reducing tower loads
Inactive Publication Date: 2012-02-22
STATE GRID CORP OF CHINA +1
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Problems solved by technology
[0002] In the currently used overhead transmission lines, the straight poles and towers mostly use suspension insulator strings to support the connecting wires. The disadvantages are mainly that the structure of the insulator pieces is complex, and the combination construction between each piece is cumbersome; The insulator string is large in size, so that the distance between the conductors is large, the transmission line is not compact, and the cost of the transmission system is high
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[0010] An insulating sleeve for overhead wires, the appearance of which is a corrugated hollow tube structure with unequal outer diameters, the weather-resistant anti-fouling and hydrophobic material is used as the surface layer 1, and the middle layer is an insulating layer 2 made of cross-linked polyethylene (XLPE). The inner layer is an interface layer 3 made of semiconductor material for contacting wires, and the middle is a cavity 4 for passing through wires. In application, the overhead wire is inserted into the cavity 4, and the external fastening device is used to connect and fix it with the tower. The wavy appearance profile and the surface layer 1 of weather-resistant anti-fouling and hydrophobic materials make it easier for rain, dew, and water droplets to roll freely along the wavy surface, improving self-cleaning ability and reducing the flow of water, fog, etc. in winter and autumn The occurrence of adverse phenomena such as icing caused by poor conditions can av...
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The invention belongs to a power line hardware fitting, concretely providing an overhead conductor insulation sleeve. In a present applied overhead transmission line, a linear pole mostly employs a suspension insulator string to support a connecting wire, and disadvantages are as follows: a complex structure of an insulator sheet, tedious combination and construction, a large weight, a high pole load, a large volume, a large interval between leads, an incompact power transmission line and high cost of a power transmission system. A purpose of the present invention is aimed at providing the overhead conductor insulation sleeve which is characterized in that: contour of the overhead conductor insulation sleeve is a wavy hollow tube structure with unequal external diameters, the sleeve is formed by a surface layer of all-weather antifouling hydrophobic material avoiding pollution flashover, an insulating layer which is made of crosslinked polyethylene material and enables insulation of a lead and a pole, and an interfacial layer which enables uniformity of a lead electric field and is made of semi conducting material, and a middle part of the overhead conductor insulation sleeve is a cavity. According to the invention, the suspension insulator string of the linear pole is substituted, lightning strike is reduced, the pole load is reduced, the interval between the leads is reduced, and a power transmission line is more compact.
Description
technical field [0001] The invention belongs to a power line fitting, and can also be said to be an overhead wire accessory, to be more precise, an overhead wire insulating sleeve. Background technique [0002] In the currently used overhead transmission lines, the straight poles and towers mostly use suspension insulator strings to support the connecting wires. The disadvantages are mainly that the structure of the insulator pieces is complex, and the combination construction between each piece is cumbersome; The large size of the insulator string makes the phase interval of the conductors large, the transmission line is not compact, and the cost of the transmission system is high. Contents of the invention [0003] The object of the present invention is to provide an insulating sleeve for overhead wires. It is characterized by a weather-resistant and anti-fouling surface layer, an insulating layer, a semiconductor interface layer and a cavity for penetrating wires. When...
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IPC IPC(8): H01B17/58
Inventor 杨长龙葛维春薛岩王芝茗赵庆杞高北星王飞崔文军于长广
Owner STATE GRID CORP OF CHINA