A high-voltage overhead line and its sagging automatic correction equipment

Abstract

The invention relates to a high-voltage overhead line and automatic droop correction equipment thereof. The overhead line comprises a wire body and an adjusting wire. The adjusting wire is formed by the sequential and circular connection of a spring and a steel wire; the wire body and the adjusting wire are erected between two towers in parallel, and heavy hammers are arranged at the two ends of the wire body. The adjusting wire is located below the wire body, and automatic droop correction devices are fixed to the two ends of the adjusting wire and used for adjusting the tension of the adjusting wire; a reed is fixed to the upper portion of each spring, and the two ends of each reed are fixedly connected with the two ends of the corresponding spring respectively. A plurality of limiting parts are arranged between the adjusting wire and the wire body, and are used for fixing the adjusting wire and the wire body to keep a fixed gap parallel; in an initial state, the adjusting wire is ina tension state, the spring is in a stretched state, and the reed is kept horizontal; when droop adjustment is carried out, the tension of the adjusting wire is reduced, so that the spring contracts,and the reed arches upwards to adjust the droop amplitude of the wire body. According to the scheme, the wire is arched by reducing the tension, so that the wire is prevented from being damaged.

Description

technical field [0001] The invention relates to the field of overhead wires, in particular to a high-voltage overhead wire and automatic droop correction equipment thereof. Background technique [0002] Overhead lines mainly refer to overhead open lines, erected above the ground, and are transmission lines that use insulators to fix the transmission wires on the towers standing on the ground to transmit electric energy. It is convenient to erect and maintain, and the cost is low, but it is easy to be affected by weather and environment (such as strong wind, lightning strike, pollution, ice and snow, etc.) . The main components of overhead lines are: wires and lightning conductors (overhead ground wires), towers, insulators, fittings, tower foundations, stay wires and grounding devices, etc. Among them, the wire is an element used to conduct electric current and transmit electric energy. The overhead bare conductor is generally one for each phase, and the 220kV and above l...

AI Technical Summary

Problems solved by technology

During the erection process of overhead lines (conductors), their spans generally range from tens of meters to hundreds of meters. The overhead lines between two towers will have a serious drooping phenomenon due to their own weight. In order to solve this problem, the most commonly used The best way is to hang heavy hammers at both ends of the overhead line, and slow down the sagging range by applying tension to both ends. Although this method can solve the sagging problem to a certain extent, it is also easy to cause damage to the wires and affect power transmission. quality

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