Connecting structure of transformer wire outgoing device

Abstract

The invention discloses a connecting structure of a transformer wire outgoing device. According to the structure, a plurality of layers of paperboard cylinders divide oil gaps. Corrugated paperboard cylinders are inserted among the paperboard cylinders; a distance difference exists between the end parts of each layer of paperboard cylinder and adjacent corrugated paperboard cylinders; clamping sheets are assembled at the upper end and the lower end of each stage of corrugated paperboard cylinder; for the paperboard cylinders distributed from inside to outside, the height of the upper ends of the paperboard cylinders is gradually increased and gradually decreased in a transitional manner from two layers of paperboard cylinders to the other layers of paperboard cylinders; for the corrugatedpaperboard cylinders from inside to outside, the height of the upper ends of the corrugated paperboard cylinders is gradually increased, and gradually decreased in a transitional manner from two layers of corrugated paperboard cylinders to the other layers of corrugated paperboard cylinders; the height of the upper end of each layer of corrugated paperboard cylinder is higher than that of the corresponding layer of paperboard cylinder; as for the paperboard cylinders from inside to outside, the length of the lower ends of the paperboard cylinders is gradually increased, and then is gradually decreased in a transitional manner from the two innermost layers of paperboard cylinders to the other layers of the paperboard cylinders, and the length of the lower ends of the two outermost layers ofthe paperboard cylinders are increased; and as for the corrugated paperboard cylinders from inside to outside, the length of the lower ends of the corrugated paperboard cylinders is gradually increased, and then is gradually decreased in a transitional manner from the innermost two layers of corrugated paperboard cylinders, and the outermost layer of corrugated paperboard cylinder is lengthened.According to the connecting structure of the invention, the clamping sheets are adopted for limiting connection, so that the problem that an insulating screw is prone to discharging, and the problem acushion block falls off or the problem that a corrugated board moves are solved, and the reliability of the wire outgoing device is improved.

Description

technical field [0001] The invention relates to a transformer manufacturing technology, in particular to a connection structure of a transformer outlet device. Background technique [0002] With the increasing number of UHV DC projects, converter transformers are one of the important equipment for DC power transmission. The outlet device has always been a difficult point in the development of converter transformers. Whether the structure of the valve side outlet device is safe and reliable directly affects the product test or suspension of the converter transformer. The safety performance of the network operation, and the reliability of the outlet device on the valve side directly affects the safety performance of the product. [0003] At present, the outlet device of UHV transformer products adopts a cardboard plus spacer or cardboard and corrugated structure, which is fixed with glue and partially fixed with insulating screws. When the outlet device is assembled from many ...

AI Technical Summary

Problems solved by technology

[0003]At present, the outlet device of UHV transformer products adopts cardboard plus pad or cardboard and corrugated structure, which is fixed by glue and partially fixed by insulating screw. When the outlet device consists of many When the layers of cardboard are assembled, the weight is very heavy, and it is easy to detach if only glue is used to fix it. If an insulating screw is used to fix it, the screw part is prone to discharge

Due to gravity or oil immersion drying, the cardboard or corrugated cardboard is moved, and the pads are prone to drop, which affects the overall shielding effect of the outlet device

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