Transformer bushing

Abstract

The invention discloses a transformer bushing, which comprises a head assembly, a central conduit, a composite jacket and a tail assembly, the central conduit sequentially penetrates through the head assembly, the composite jacket and the tail assembly, the central conduit comprises a current-carrying rod and a winding pipe, the current-carrying rod comprises a first guide rod and a second guide rod, and the first guide rod and the second guide rod are fixedly connected, the winding pipe is sleeved outside the current-carrying rod, a gap between the winding pipe and the current-carrying rod is not less than 3mm, and the length of the winding pipe is less than that of the current-carrying rod. The transformer bushing is simple in structure, reliable winding of a capacitor core and reliable current carrying of the conducting rod can be guaranteed, meanwhile, stable connection and reliable matching between parts are guaranteed, exchange of transformer bushing products of the same voltage class can be achieved, and universality is achieved.

Description

technical field [0001] The invention relates to the technical field of power transmission and transformation insulation equipment, in particular to a transformer bushing. Background technique [0002] The power transformer is one of the most important and expensive key power equipment in the power system, and the transformer bushing is one of the key components of the transformer. , due to the large diameter of the lead-out wire, the inner diameter of the conductive rod of the transformer bushing will increase accordingly, and the diameter of the aluminum tube of the coiled capacitor core will also increase, so it is not easy to produce and use. [0003] In addition, for high-current transformer bushings, the guide rod structure is generally adopted, and the capacitor core is directly wound on the current-carrying guide rod, and the capacitor core of the whole roll needs to be in the middle of the winding tube when winding Insert the winding shaft, and the inner diameter of...

AI Technical Summary

Problems solved by technology

[0002] The power transformer is one of the most important and expensive key power equipment in the power system, and the transformer bushing is one of the key components of the transformer. , due to the larger diameter of the lead wire, the inner diameter of the conductive rod of the transformer bushing will increase accordingly, and the diameter of the aluminum tube of the coiled capacitor core will also increase, so it is not convenient for production and use

[0003] In addition, for high-current transformer bushings, the guide rod structure is generally adopted, and the capacitor core is directly wound on the current-carrying guide rod, and the capacitor core of the whole roll needs to be in the middle of the winding tube when winding Insert the winding shaft, and the inner diameter of the current-carrying guide rod is generally too small to match the winding shaft, and the thinner winding shaft will easily cause the winding shaft to rotate during the winding process

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