Resin bus expansion joint

Abstract

The invention relates to a resin bus expansion joint, and belongs to the technical field of power transmission and distribution facilities. The resin bus expansion joint comprises a plurality of hard conductors located at two ends of the resin bus expansion joint, the hard conductors located at one end of the resin bus expansion joint are corresponding to the hard conductors located at the other end of the resin bus expansion joint, each hard conductor is wrapped by resin insulators, the resin insulators separate the hard conductors from one another, the hard conductors at two ends of the resin bus expansion joint are connected by banded flexible metal conductors in the middle of the resin bus expansion joint in a one-to-one correspondence mode, two ends of the flexible metal conductorare respectively welded with the hard conductors, an insulating film is wound around the periphery of each metal conductor, and a heat shrinkable sleeve is wrapped on the periphery of each the insulating film. The upper and the lower portions of the expansion joint are respectively covered with an upper protective cover and a lower protective cover which are sleeved with each other. Angle steels are respectively installed at two ends of the expansion joint, wherein the angle steels at two ends of the expansion joint are connected through adjusting screw rods, and the adjusting screw rod and the angle steels are fixed through adjusting nuts screwed on the adjusting screw rod. The expansion joint has a high ingress protection rating (IP) which can reach IP68, is compact in structure and small in size, and saves installation space, and furthermore inter-phase short circuit faults rarely occur.

Description

technical field [0001] The invention relates to a resin busbar expansion joint, which belongs to the technical field of power transmission and distribution facilities. Background technique [0002] Busway is an important component in the field of power transmission and distribution. Traditional busway usually has two types: dense type and air-insulated type. The Chinese invention patent with the publication number CN2605687Y discloses a fully enclosed composite resin cast bus duct, including bus conductors and resin insulators, each bus conductor is wrapped by resin insulators, and the bus conductors are separated by resin insulators. Cured into a whole by a resin insulator. This patent uses a mixture of resin material, curing agent and quartz sand as the insulating medium, which is integrally cast together with the conductor. The conductor is completely enclosed in the insulator, which has the advantages of high mechanical strength, excellent insulation performance, high p...

AI Technical Summary

Problems solved by technology

This kind of expansion joint has the following two disadvantages: 1. The protection level is low, the insulation film layer is not waterproof, and it is easy to be punctured and worn out, and the reliability is not high; 2. It is connected by bolts, and there must be a large gap between phases. distance, the structure is not compact enough, so the size of the middle part of the expansion joint is larger

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