Electric-transmission-line cable-terminal three-dimensional downwards-leading device

Abstract

The invention relates to an electric-transmission-line cable-terminal three-dimensional downwards-leading device. The electric-transmission-line cable-terminal three-dimensional downwards-leading device comprises a steel pipe pole and cable terminal platforms arranged at the lateral portions of the steel pipe pole. The steel pipe pole comprises a pole body and multiple layers of cross arms with the inner ends connected with the pole body, the projection of the axes of every three corresponding layers of cross arms on the section of the pole body is not superposed, and every three corresponding layers of cross arms include the upper cross arms, the middle cross arms and the lower cross arms. Each cable terminal platform comprises a cable terminal platform main pole and a cable-terminal-head-arrester installation platform which is installed on the cable terminal platform main pole and vertically corresponds to the outer ends of the corresponding three layers of cross arms, the portions, intersecting with the cable-terminal-head-arrester installation platforms, of electric power lines with the direction changed into the vertically-downward direction through the cross arms are correspondingly connected with one ends of power cables, and the other ends of the power cables are grounded. By means of the electric-transmission-line cable-terminal three-dimensional downwards-leading device, sufficient safe distance can be kept between downleads of an overhead line; in addition, appearance is more coordinated and more attractive, wiring construction is clear and convenient, land can not be excessively occupied, and investment is saved.

Description

technical field [0001] The invention relates to the technical field of power transmission and transformation engineering, in particular to a device for transferring overhead power lines to grounded power cables in power transmission line engineering. Background technique [0002] At present, 110kV double-circuit overhead lines are widely distributed, and in urban areas, it is often necessary to connect the overhead lines to the relevant cable terminal devices and then change them to cables into the ground. Under normal circumstances, some components are modified on the existing overhead line power towers to install corresponding jumper bar insulators, lightning arresters, cable terminals and other related devices, and the bare wires are connected to the cable terminal joints with down conductors. Since all kinds of electrical devices are installed on the pole tower, various connections need to be made between the bare wires at the same time, the appearance is not harmonious ...

AI Technical Summary

Problems solved by technology

Since all kinds of electrical devices are installed on the pole towers and need to be connected with bare wires at the same time, the appearance is not harmonious and beautiful, and at the same time it causes a lot of inconvenience to the live overhaul, maintenance and other operations after putting into operation.

In individual projects, based on the convenience of live inspection and maintenance operations, the relevant units adopt the method of establishing two base towers at the end of the overhead line, and separating one circuit of the double-circuit overhead line to a separate tower and then to the cable terminal. program, which in turn caused a corresponding increase in investment and floor area, resulting in a certain waste

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