Transformer terminal with multi-level boss interference and high reliability connection

Abstract

The invention discloses a multi-stage boss interference high-reliable-connection transformer terminal. The transformer terminal comprises a male connector and a female connector and is characterized in that an electric-conduction ring is arranged on the male connector and connected with an external line connection end through a transition body; a hollow rotating body is connected to the inner edge of the electric-conduction ring and provided with at least two steps in the direction away from the end of the electric-conduction ring from the electric-conduction ring, the diameters of the steps are reduced in the direction away from the end of the electric-conduction ring in a step-by-step mode, and a turnover tube is arranged at the part, away from the end of the electric-conduction ring, of the rotating body and retracted inwards to the electric-conduction ring to be turned over, a bolt is arranged inside the turnover tube and inserted through the electric-conduction ring, annular grooves are formed in the parts, at the two ends of the turnover tube, of the bolt in a coaxial mode, and stopping pieces abutting against the two ends of the turnover tube respectively are arranged inside the annular grooves. An insertion hole is formed in the female connector, a rotating face capable of being in interference connection with the steps of the rotating body is arranged on the inner face of the insertion hole, a screw hole matched with the bolt is formed in the bottom of the insertion hole, and the female connector is further provided with an internal line connection end internally connected with a transformer box. Connection is firm, installing and detaching are convenient, and materials are saved.

Description

technical field [0001] The invention relates to a transformer accessory for equipment in the electric power industry, in particular to a transformer terminal with multi-level boss interference and high reliability connection. Background technique [0002] my country has a vast territory and a dense power transmission network. At the end of the network, transformers are needed for voltage conversion. Except for cabinet-type transformers, most of the existing transformers are installed on elevated open-air platforms and work in complex open-air environments. In this context, the reliability of the connection between the transformer and the upper and lower power grids is particularly important. Different from the connection point in the transmission line, the reliability can be improved by increasing the overlapping contact area. The contact area of ​​the terminal connection of the existing transformer is relatively small. The plane connection of the ends is realized by the bolt ...

AI Technical Summary

Problems solved by technology

[0002] my country has a vast territory and a dense power transmission network. At the end of the network, transformers are needed for voltage conversion. Except for cabinet-type transformers, most of the existing transformers are installed on elevated open-air platforms and work in complex open-air environments. In this context, the reliability of the connection between the transformer and the upper and lower power grids is particularly important. Different from the connection point in the transmission line, the reliability can be improved by increasing the overlapping contact area. The contact area of ​​the terminal connection of the existing transformer is relatively small. The plane connection of the ends is realized by the bolt pressure, and the ends are affected by the flatness of the plane, and there will still be some gaps, which will cause poor contact under the natural environment of wind and rain erosion such as salt spray and acid rain, and the contact resistance is for a The efficiency of the transformer is also very critical, and it is also crucial to its stable operation, so this problem still needs to be solved technically.

Images