750 kv lattice composite cross-arm insulator

An insulator and lattice-type technology, which is applied in the field of lattice-type composite cross-arm insulators, can solve problems such as the difficulty in meeting the mechanical strength requirements of 750kV transmission lines, large tower structure sizes, and large conductor loads, etc., to achieve easy self-cleaning, It is convenient to repair the tower and reduce the construction cost
CN102054545AActive Publication Date: 2011-05-11NORTHWEST CHINA GRID +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NORTHWEST CHINA GRID
Publication Date
2011-05-11

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Abstract

The invention discloses a 750 kV lattice composite cross-arm insulator, which comprises three or more cross-arm insulators, wherein the cross-arm insulators are connected into a lattice structure through a connecting and fastening device; the connecting and fastening device comprises three or more web members; adjacent ends of the web members are connected with each other through anchor ears; and the cross-arm insulators pass through the anchor ears. Each cross arm comprises a core rod and an umbrella skirt which is arranged outside the core rod, the two faces of each umbrella skirt are versiera surfaces which are curve-symmetrical, and umbrella bodies are connected with one another in an arc form, so that dirt is hard to accumulate and self-cleaning is easy; moreover, the design structure meets the requirement of a 750kV power transmission line on mechanical intensity, greatly enhances the bearing capability of an insulated cross arm and enhances the structural stability of a tower.
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Description

technical field

[0001] The invention relates to a composite cross-arm insulator, in particular to a lattice type composite cross-arm insulator. Background technique

[0002] At present, the device for supporting live wires on power line towers usually adopts the method of cross-arm plus insulator strings, and some directly use composite cross-arm insulators. However, the composite cross-arm insulators used are only composed of a single column, at most two columns, and are mostly used for small Load, low-voltage environment, the structure is to install sheds outside the mandrel, the top of each umbrella body is a skip curve, and the bottom of the umbrella is a plane.

[0003] For the straight pole tower of 750kV transmission line due to its ultra-high voltage, complex technology, long electrical distance, large structural size, high height, large span, and large conductor load, the composite cross-arm insulators of single and double columns generally, It is difficult to meet...

Claims

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