Four-link tension string for +/-800KV heavy ice area

Abstract

The invention provides a four-link tension string for a + / -800KV heavy ice area, belonging to fitting strings for construction of transmission lines. The four-link tension string comprises two hanging point fittings connected with a tower, wherein after being connected with the same fitting, each hanging point fitting is connected at the left end of a first yoke plate by a bolt; the right end of the first yoke plate is connected with two insulators by a ball head hanging ring; two of the four insulators are connected on a second yoke plate and the other two insulators are connected on the other second yoke plate; the two second yoke plates are respectively connected with a combined yoke plate by a right-angle hung plate; an equalizing ring is arranged on two insulators; the equalizing ring is in open type or two-leg split type; the combined yoke plate is formed by connecting a two-variable four-link plate, two right-angle hung plates and two one-variable two-link plates by bolts; and two shielding rings are fixed at the upper and lower ends of the two-variable four-link plate by brackets. The four-link tension string has the characteristics of convenience for installation of the equalizing ring, stable structure and high strength.

Description

±800KV quadruple tension strings in heavy ice area technical field The invention relates to an insulator string fitting for erecting a power transmission line, in particular to a four-connection tension-resistant string fitting for a ±800KV power transmission line in a heavy ice area. Background technique Due to the large ice and snow loads of overhead transmission lines in heavy ice areas, the structural stability of the existing quadruple tension strings is poor, and the strength design cannot meet the requirements. The grading ring and shielding ring designed by the body are not easy to install. Third, because the existing grading ring is a closed ring structure, it must be installed in the insulator string first. Therefore, the aluminum grading ring is often damaged during construction. damaged. Contents of the invention The purpose of the present invention is to provide a ±800KV four-connected tension string in heavy ice areas with convenient installation of press...

AI Technical Summary

Problems solved by technology

Due to the large ice and snow loads of overhead transmission lines in heavy ice areas, the structural stability of the existing quadruple tension strings is poor, and the strength design cannot meet the requirements. The grading ring and shielding ring designed by the body are not easy to install. Third, because the existing grading ring is a closed ring structure, it must be installed in the insulator string first. Therefore, the aluminum grading ring is often damaged during construction. damaged

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