Umbrella skirt type cement-based composite insulated cross arm and manufacturing technology thereof

Abstract

The invention discloses an umbrella skirt type cement-based composite insulated cross arm. The umbrella skirt type cement-based composite insulated cross arm is of a triangular outline structure and is formed in the manner that three cement-based composite insulated components and three rigid components are connected through flanges. Power fitting strings are hung at the ends of the insulated cross arm. The cement-based composite insulated components are manufactured in a one-time forming manner through a centrifugal process. Besides, an umbrella skirt structure is formed on the surface of each cement-based composite insulated component in a one-time manner. In this way, the umbrella skirt type cement-based composite insulated cross arm has not only the insulated function but also the characteristics of a supporting structure and can replace an insulator and a steel cross arm which are adopted in a transmission line iron tower formerly, the umbrella skirt type cement-based composite insulated cross arm can reduce the line corridor distance and the height of the iron tower under the condition of meeting the use requirements of cross arms of extra-high-voltage transmission line iron towers, ultra-high-voltage transmission line iron towers and high-voltage transmission line iron towers, and therefore the operation cost of transmission lines can be effectively reduced.

Description

technical field [0001] The invention relates to the technical field of iron tower cross-arms for ultra-high voltage, ultra-high voltage and high-voltage transmission lines, in particular to an umbrella skirt type cement-based composite insulating cross-arm and a preparation process thereof. Background technique [0002] The crossarm is the main support member of the transmission line tower. For a long time, the crossarm of the transmission line tower in my country and even in the world has been operated in the form of steel structure suspension insulator strings. However, as the voltage level continues to increase, starting from the design requirements of overhead lines, it is necessary to increase the distance between lines, which will inevitably increase the area occupied by the transmission corridor. In today's society where land resources are increasingly scarce, land resources are not only wasted, but also the cost of land occupation and demolition is greatly increased....

AI Technical Summary

Problems solved by technology

However, as the voltage level continues to increase, starting from the design requirements of overhead lines, it is necessary to increase the distance between lines, which will inevitably increase the area occupied by the transmission corridor

In today's society where land resources are increasingly scarce, not only land resources are wasted, but also the cost of land occupation and demolition is greatly increased.

And in order to meet the insulation distance of overhead lines, the length of the insulator string must be increased, which will lead to an increase in the height of the tower and the amount of steel used

A series of problems caused by this will greatly increase the operating cost of transmission lines

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