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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

Active Publication Date: 2011-05-11
NORTHWEST CHINA GRID +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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

Method used

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  • 750 kv lattice composite cross-arm insulator
  • 750 kv lattice composite cross-arm insulator
  • 750 kv lattice composite cross-arm insulator

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Embodiment Construction

[0021] Such as figure 1 , 2 As shown, the 750kV composite cross-arm insulator in the preferred embodiment of the present invention includes four cross-arm insulators 16, 17, 18, and 19, and the cross-arm insulators 16, 17, 18, and 19 are connected by a connecting fastening device 19 , the connection and fastening device 19 includes four webs 9, 10, 11, 12; the webs 9, 10, 11, 12 are connected by hoops 14, and the cross-arm insulators 16, 17, 18, 19 Pass through the hoop 14 and fasten through the hoop 14, and the adjacent ends of the web bars 9, 10, 11, 12 are also fastened through the hoop 14; in order to play a reinforcing role, connect the fastening device 20 can also increase the oblique web bar 15, the ends of the web bar alternately, that is, the ends connected by 9,12 and the ends connected by 10,11 are bridged by the oblique web bar 15, and the connecting fastening device 20 is just formed by the web bar 9,10 , 11, 12 constitute a lattice structure mode, which greatly...

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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.

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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Application Information

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IPC IPC(8): H01B17/00
Inventor 冯海潮曾林平王铭军杨福民
Owner NORTHWEST CHINA GRID
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