Detachable network side lead butt joint structure of converter transformer and use method

Abstract

The invention relates to a detachable network side lead butt joint structure of a converter transformer and a use method, and belongs to the technical field of transformer manufacturing. According to the technical scheme, the structure comprises a screw rod (1), a nut (2), a shielding pipe flange (3), a voltage-sharing ball, a network side lead voltage-sharing pipe and a shielding pipe, the shielding pipe flange (3) is fixedly connected with the shielding pipe, the shielding pipe flange (3) is connected with the voltage-sharing ball through the screw rod (1) and the nut (2), the shielding pipe is of a multi-layer insulation paper tube structure, oil duct gaps are reserved between the insulation paper tubes, and the multi-layer insulating paper tube and the oil duct gap of the shielding tube are mutually matched with the insulating paper tube outside the network side lead voltage-sharing tube. According to the invention, the detachable connection between the network side lead and the transformer body is realized, the transportation is convenient, the transportation cost of users and transformer production enterprises is reduced, the transportation efficiency is improved, the efficiency of development and construction of the direct current power transmission and transformation industry in China is improved, and the speed and efficiency of power supply project promotion are improved.

Description

technical field [0001] The invention relates to a detachable grid-side lead wire connection structure and a use method of a converter transformer, belonging to the field of converter transformer equipment manufacturing. Background technique [0002] With the continuous development of DC transmission projects, the demand for converter transformers as the main equipment of converter stations is also increasing. Both the number of converter transformers and the power requirements of single converter transformers are increasing. The increase in power It means that the voltage level is increased. To sum up various reasons, the transportation size of the converter transformer is also getting larger and larger. [0003] The grid-side lead wire is one of the most critical components in the converter transformer, because its design, process, and manufacturing process are quite complicated. Most of the current grid-side lead wires are integrally formed with the pressure equalizing b...

AI Technical Summary

Problems solved by technology

If the DC project adopts the road transportation scheme, due to the super high and heavy transformers, some bridges need to be reinforced, and some toll stations need to be dismantled, which will cause great damage to the road surface, and the loading and unloading is extremely difficult. The corresponding loading, unloading, and transportation costs are huge, and the transportation efficiency It not only brings a great economic burden to users and transformer manufacturers, but also brings great resistance to the acceleration of the development of my country's DC power transmission and transformation industry. Transformer is urgent

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