Repair tube for overhead transmission lines

Abstract

The invention discloses a repair tube for overhead transmission lines. The repair tube for overhead transmission lines is characterized in that the repair tube is formed by attaching the inner surfaceof a strip-shaped insulating portion to the outer surface thereof by winding; two ends of the outer surface of the strip-shaped insulating portion are respectively provided with a reverse rib and a raised strip extending in the longitudinal direction; the reverse rib and the raised strip are arranged in parallel; a groove matching the reverse rib is formed at the location, opposite to the raisedstrip, on the inner surface of the strip-shaped insulating portion; when the strip-shaped insulating portion is wound into a repair tube, the reverse rib is embedded in the groove; the surface of thegroove is also provided with a shielding layer; and an adhesive layer is arranged between the reverse rib and the groove; The repair tube for overhead transmission lines is long-strip-shaped before application, and can become cylindrical through self-spiral, so that the diameter of the repair tube can be adjusted, and the overhead transmission lines with different wire diameters can be repaired only by means of the repair tube, and the repair tube is convenient to carry by a line operation worker, thus reducing the transportation cost. The repair tube for overhead transmission lines can fix and buckle the strip-shaped insulating portion which becomes cylindrical through self-spiral by means of the reverse rib and the groove, thus being easy for operation, and being high safety.

Description

technical field [0001] The invention relates to a wire protection device, in particular to a repair pipe for bare wires of 110-220kV overhead power transmission. Background technique [0002] Overhead refers to a way of laying, which is a way of transporting electricity, communications, water supply, heating and other materials. There are overhead wires, overhead transmission lines, overhead optical fibers or OPGW lines, as well as overhead heat pipes and overhead water supply pipes, etc. Wait. [0003] Among them, overhead transmission lines and overhead conductors are two different power transmission materials, which are completely different categories in terms of operation mode, product structure, technical requirements, and maintenance standards; the Electric Wire and Wire Standardization Technical Committee (SAC / TC213) explained in a centralized manner Various national standards or industry standards clearly state that coaxial wires solve the "electromagnetic wave" pro...

AI Technical Summary

Problems solved by technology

When this kind of wire sleeve is used for wires, since the cross-section of the longitudinal extension is wavy, there are many axial ribs on the inner wall of the tube formed after being entangled with the wires. In order to avoid damage to the wires, it is necessary to fill the tube with silicone gel. At the same time, the presence of axial ribs makes the electric field of the wires in the bushing uneven, which cannot achieve a high insulation level, and the existence of many axial ribs on the surface of the tube body also makes the bushing unsuitable for outdoor aerial use. The use of electric wires; and after the sleeve is closed, it is necessary to extend the sleeve parts longitudinally to connect the two ends of the sleeve horizontally to close them. First, the operation is cumbersome. , while outdoor overhead wires are usually bent 20-40°, and even 60° bends are often encountered

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