750kV converter transformer outgoing line cylinder structure and assembling method

Abstract

The invention relates to a 750kV converter transformer outgoing line cylinder structure and an assembly method. The 750kV converter transformer outgoing line cylinder structure comprises a first aluminum pipe insulator, a second aluminum pipe insulator and a cylindrical insulation plug-in structure, wherein the first aluminum pipe insulator is an S-shaped aluminum pipe welding structure with an outer surface provided with crepe paper insulation, one end of the first aluminum pipe insulator is connected with a coil, the other end of the first aluminum pipe insulator is fixedly connected with the cylindrical insulating plug-in structure, the second aluminum pipe insulator is a cylindrical aluminum pipe welding structure with an outer surface provided with a crepe paper insulator, one end ofthe second aluminum pipe insulator is fixedly connected with a voltage-sharing ball, the shape and the size of the outer diameter of the other end of the second aluminum pipe insulator are matched with the shape and the size of the inner diameter of the cylindrical insulating plug-in structure, and the second aluminum pipe insulator is inserted into the cylindrical insulating plug-in structure tobe tightly attached to and in contact connection with the cylindrical insulating plug-in structure. According to the invention, good electrical performance and mechanical performance of the outgoing line structure are ensured, and safe operation of the outgoing line structure is ensured; and the outgoing line cylinder is reliable in structure and convenient to install, the end structure is convenient to disassemble and transport, and it is guaranteed that the size of the outgoing line structure can meet the transportation requirement.

Description

technical field [0001] The invention belongs to the technical field of transformer manufacturing, and in particular relates to a 750kV converter transformer outlet barrel structure and an assembly method. Background technique [0002] The structure of the transformer outlet barrel generally adopts pressure equalizing tubes, pressure equalizing balls, insulating pulp parts, insulating paper, cardboard, stays and other components to form a complex insulation system to protect the internal transformer current-carrying leads to complete the process from the coil outlet to the bushing. The connection and coordination of the terminal in the oil ensures the safe operation of the lead wire under the stress of the electric field. [0003] The 750kV converter transformer on the grid side has a large capacity and high voltage level. In order to meet the requirements of transportation size, the 750kV converter transformer on the grid side adopts an end outlet structure, which further co...

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Problems solved by technology

[0003] The 750kV converter transformer on the grid side has a large capacity and high voltage level. In order to meet the requirements of transportation size, the 750kV converter transformer on the grid side adopts an end outlet structure, which further compresses the space from the coil to the bushing terminal, and cannot fully guarantee the outlet The electrical and mechanical strength of the structure leads to certain safety hazards in the converter transformer

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