Tower node connection device made from composite material

Abstract

The invention aims to provide a tower node connection device made from a composite material and an installation and application method. The connection device adopts all composite material for connection, and solves the influence of a metal connection member, adopted to connect a main pole and a cross arm, on the insulating performance of a composite material tower and the problems on tower weight and lightning proof arrangement brought about by the metal connection member. The device mainly comprises the main pole, a hoop and the cross arm. The hoop includes a hoop main body, an insert-connection base and a reinforcing wall. The cross arm has a round or polygonal cross section. The main pole adopts a composite material winding structure, and has a tapered whole body. The cross arm is formed by pultrusion or winding molding and has a conical or columnar structure, and the external part of the cross arm is of shed structure. The node hoop is formed by resin transfer molding, and has a boss reverse locking structure at the part insert-connected with the cross arm. The device makes full use of the insulation gap between the electrified part of the tower head and the grounding part to realize line corridor compression and lightning protection improving effects.

Description

Technical field [0001] The invention belongs to the technical field of power transmission composite material poles and towers, and in particular relates to a composite material pole and tower node connection device. Background technique [0002] At present, the widely used poles in overhead transmission lines at home and abroad mainly include concrete poles and iron poles. Transmission lines with voltage levels of 110kV and above in my country mostly use iron towers. In the course of use, iron towers have exposed many defects and problems to be solved. For example, the body is bulky, the installation cost is high, the maintenance cost is high, and lightning, snow, ice, fog and air pollution will all threaten the safe power transmission of traditional towers. [0003] Due to its excellent comprehensive properties, such as high strength, light weight, corrosion resistance, and good insulation, composite materials are very suitable for use in tower structures, and can not only overcome...

AI Technical Summary

Problems solved by technology

[0010] The object of the present invention is to provide a composite material pole tower node connection device and installation and use method. The connection device of the present invention adopts full composite material connection, which solves the problem of the insulation performance of composite material pole towers when metal connectors are used to connect the main pole and cross arm. impact, and the problems brought by metal connectors to the weight of the tower and the lightning protection arrangement; the present invention makes full use of the insulation gap between the live part of the tower head and the grounding part to realize the effect of compressing the corridor and improving the lightning protection

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