End structure and transformer bushing with the end structure

Abstract

The invention discloses a tail end structure for a transformer bushing. The transformer bushing comprises an in-oil insulation tube and a capacitor core located in the in-oil insulation tube, wherein the capacitor core comprises a central conduit. The tail end structure comprises a base and an end cap, wherein a first through hole and a fixing groove for fixing the in-oil insulation tube are formed in the base, a second through hole corresponding to the first through hole is formed in the end cap, the central conduit penetrates through the first through hole and is fixed in the second through hole, and the end cap is detachably and fixedly connected with the base. The tail end structure is simple in whole structure, convenient to mount and dismount and low in manufacturing cost. The invention further discloses the transformer bushing provided with the tail end structure.

Description

technical field [0001] The invention relates to the field of power transmission insulation equipment, in particular to an end structure and a transformer bushing with the end structure. Background technique [0002] The transformer bushing is the main insulation device outside the transformer box. The lead-out wire of the transformer winding must pass through the insulating bushing to insulate between the lead-out wires and between the lead-out wire and the transformer shell, and at the same time play the role of fixing the lead-out wire. The capacitive transformer bushing is composed of a capacitor core, a composite jacket, and metal accessories. The capacitor core generally includes a central conduit and cable paper and aluminum foil wound on the central conduit. [0003] When assembling the capacitor core of the traditional transformer bushing, the central conduit and the round nut are mostly threaded, and the capacitor core and the round nut must be connected by relativ...

AI Technical Summary

Problems solved by technology

Since the central tube and the round nut are generally made of aluminum parts, the threads are prone to seizure during disassembly, which makes installation and disassembly inconvenient and takes a long time to assemble, and the capacitor core is easy to absorb moisture when it is exposed to the air for a long time, which will eventually affect its performance.

In addition, due to the heavy weight of the capacitor core, a reserved hole is generally designed on the upper part of the central conduit to use tooling for screw assembly, which is cumbersome to operate, requires a large amount of assembly work, and is difficult to assemble, which increases the assembly time and thus increases the product cost.

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