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Controllable converter electric-arc furnace

A converter and arc furnace technology, which is applied to electrical components, conversion devices for converting AC power input into AC power output and output power, etc., can solve the problem of high operating costs of electric arc furnaces

Pending Publication Date: 2021-03-05
DUNSHI MAGNETIC ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a controllable variable current electric arc furnace to solve the technical problem of high operating cost of the electric arc furnace existing in the prior art

Method used

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  • Controllable converter electric-arc furnace
  • Controllable converter electric-arc furnace

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specific Embodiment approach

[0087] optional, please refer to figure 2 , as a specific implementation of the controllable variable-flow electric arc furnace provided in the embodiment of the present invention, the controllable variable-flow electric arc furnace also includes:

[0088] Multiple off-load disconnect switches.

[0089] The no-load isolating switch is connected between the output end of the three-phase converter and the power input end of the AC electric arc furnace.

[0090] In this embodiment, multiple off-load isolating switches are added to the controllable variable current electric arc furnace. In specific implementation, an unloaded isolating switch can be set at each output end of the three-phase converter, or an unloaded isolating switch can be set at the output end of each rectification and inverter unit in the three-phase converter , is not limited here.

[0091] In this embodiment, the fault protection of the controllable variable current electric arc furnace can be better reali...

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Abstract

The invention provides a controllable converter electric-arc furnace. The controllable converter electric-arc furnace is applied to the technical field of electric-arc furnace control and comprises aphase-shifting transformer, a three-phase converter and an alternating-current electric-arc furnace; the primary side of the phase-shifting transformer is used for being connected with a three-phase power supply, the secondary side of the phase-shifting transformer is connected with the input end of the three-phase converter, and the output end of the three-phase converter is connected with the power supply input end of the alternating-current electric-arc furnace; and the controlled end of the three-phase converter is used for receiving an external driving pulse signal. The controllable converter electric-arc furnace structure can reduce the loss, so that the operation cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of electric arc furnace control, and more specifically relates to a controllable variable current electric arc furnace. Background technique [0002] In the prior art, the control of the electric arc furnace temperature is usually achieved by manipulating the lifting and lowering of the electrodes. The automatic control effect of this control scheme is not ideal, while the manual control depends on experience and technical level, and there is a risk of causing soft and hard breakage accidents of the electrodes. At the same time There are also problems such as unstable furnace conditions and high energy consumption, which increase the operating cost of the electric arc furnace. On this basis, in the prior art, in order to prevent the heating rod of the electric arc furnace from being burned out by a large current, it is necessary to install special equipment such as a super-large-capacity circuit breaker and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27B3/08F27B3/28H02M5/458
CPCF27B3/085F27B3/28H02M5/4585
Inventor 姜佳彦陈鹰梁艳召郝立佳姜建国唐英伟韦统振李胜飞王大杰赵思锋韩丽婷
Owner DUNSHI MAGNETIC ENERGY TECH
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