A new valve-side outlet structure for converter transformers

Abstract

The invention relates to a novel valve side wire-outlet structure for a converter transformer, and belongs to the technical field of an extra-high voltage converter transformer. According to the technical scheme, multiple layers of insulating paper sleeves and corrugated boards are arranged on the exterior of an aluminum pipe in the wire outlet; the insulating paper sleeves in each layer are arranged from inner to outer in a stepped and overlapped manner; the lengths of the insulating paper sleeves in the inner layer are greater than that of the insulating paper sleeves in the outer layer; the corrugated boards are arranged between adjacent two layers of the insulating paper sleeves; the lengths of the corrugated boards are greater than that of the insulating paper sleeves in the upper layer and less than that of the insulating paper sleeves in the lower layer; flat paper boards (2) are arranged in the junctions of the insulating paper sleeves; the insulating paper sleeves and the corrugated boards on the exterior of the aluminum pipe are gradually thinned to be converted into a crepe paper (1) structure in a transitional manner; the exterior of the aluminum pipe far from the wire outlet is wrapped with the crepe paper (1); the crepe paper wraps for insulation until the flat paper boards (2) are wrapped, and then the crepe paper continuously wraps for insulation until the insulating paper sleeves in the outermost layer are wrapped. The novel valve side wire-outlet structure has the positive effects that the novel valve side wire-outlet structure is reasonable in structure, easy to implement, and capable of effectively relieving tension supply of valve side leads and capable of promoting the rapid development of the direct current power transmission and transformation industries.

Description

technical field [0001] The invention relates to a novel valve-side outlet structure of a converter transformer, which belongs to the technical field of ultra-high voltage converter transformers. Background technique [0002] With the continuous development of DC transmission projects, the demand for DC converter transformers as the main equipment of converter stations is also increasing. The valve side leads are one of the most critical components in converter transformers. The process is quite complicated, the number of qualified suppliers is small, and the processing cycle is long. Factors such as these factors have seriously affected the production cycle of the converter, which in turn has affected the overall development of DC transmission projects in my country. In addition, the existing valve-side leads and valve-side horizontal outlets have a complex structure, resulting in the need for individual design of each product in the design of the converter transformer, which...

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Problems solved by technology

[0002] With the continuous development of DC transmission projects, the demand for DC converter transformers as the main equipment of converter stations is also increasing. The valve side leads are one of the most critical components in converter transformers. The process is quite complicated, the number of qualified suppliers is small, and the processing cycle is very long. Factors such as the production cycle of the converter have seriously affected the production cycle, which in turn affects the overall development of my country's DC transmission projects.

In addition, the structure of the existing valve-side leads and valve-side horizontal outlets is complex, resulting in the need for separate design of each product in the design of the converter transformer, which also causes shortage of supply and inconvenience in design to a certain extent.

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