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Star-Delta conversion switch for current conversion device in electric arc furnace transformer

An electric arc furnace transformer and current conversion technology, applied in the direction of contact electrical connection, etc., can solve the problems of difficult use, complicated wiring, troublesome manufacturing, etc., and achieve the effect of quick conversion, simple structure, and suitable for popularization and use

Inactive Publication Date: 2013-10-23
YIXING XINGYI SPECIAL TRANSFORMER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the star-delta switch used in the current conversion device is complex in wiring, troublesome in manufacture, and difficult to use

Method used

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  • Star-Delta conversion switch for current conversion device in electric arc furnace transformer

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0014] Such as figure 1 Shown: a star angle conversion switch used in the electric arc furnace transformer current conversion device, including the terminal fixing plate 1, the terminal fixing plate 1 is provided with the lead-out line node 2, and the terminal fixing plate 1 is also provided with the lead-out line A number of internal contacts 3 are provided on the circumference of the node 2, and external contacts corresponding to the internal contacts 3 are provided on the outside of the internal contacts 3, and the number of internal contacts 3 and external contacts 4 is not less than 3 In addition, the inner contacts 3 and the outer contacts 4 are evenly distributed along the circumferential direction of the terminal fixing plate.

[0015] In the present invention, corresponding inner contacts 3 and outer contacts 4 are arranged on the terminal fix...

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Abstract

The invention discloses a star-Delta conversion switch for a current conversion device in an electric arc furnace transformer. The star-Delta conversion switch comprises a terminal fixing plate (1), wherein an outgoing line node (2) is arranged on the terminal fixing plate (1). The star-Delta conversion switch is characterized in that the terminal fixing plate (1) is provided with a plurality of inner contacts (3) along the periphery of the outgoing line node (2), and outer contacts (4) which are in one-to-one correspondence to the inner contacts (3) are arranged on the outer sides of the inner contacts (3). As the terminal fixing plate is provided with the inner contacts and the outer contacts corresponding with each other, the outer contacts are connected with the current conversion device and the inner contacts are connected with the outgoing line node to realize star connection or Delta connection, the star-Delta conversion switch has the characteristics of being simple in structure and rapid to convert and is suitable for popularization and use.

Description

technical field [0001] The invention relates to a star angle change switch used in a current change device in an electric arc furnace transformer. Background technique [0002] Electric furnace is an important process equipment in modern industry, and it has a wide range of uses. In the metallurgical industry, electric furnaces are used to smelt high-quality alloy steel and ferroalloys. In the machinery industry, electric furnaces are used to cast steel, cast iron and alloy castings. There are many types of electric furnaces, the largest number of which are electric arc furnaces and resistance furnaces. The heating principle of electric arc furnace is to use gas arc discharge to generate heat, and it is represented by AC electric arc steelmaking furnace, DC electric arc steelmaking furnace and ladle refining furnace. In the electric arc furnace transformer, the current ratio of each stage of the direct-regulated electric arc furnace transformer is constant, so a converter...

Claims

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Application Information

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IPC IPC(8): H01H1/58
Inventor 于兴益
Owner YIXING XINGYI SPECIAL TRANSFORMER
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