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Method for measuring electrode current of buried arc furnace

A technology of electric furnace electrode and measurement method, which is applied in the direction of measuring device, measuring electric variable, measuring current/voltage, etc., can solve the problems of open flame, large smoke and dust, and unsuitable installation of detection equipment, etc., and achieves high accuracy, low cost, and measurement Method reliable effect

Active Publication Date: 2009-04-22
BERIS ENG & RES CORP
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Problems solved by technology

[0018] In order to reduce the length of the high-current loop of the electric furnace, reduce the voltage drop of the loop and power consumption, the position of the joint point (combustion ring) between the short net and the electrode of the general electric furnace is relatively low, and the ambient temperature here is relatively high (generally around 600°C), and There are open flames and heavy smoke, so it is not suitable for installing testing equipment

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  • Method for measuring electrode current of buried arc furnace
  • Method for measuring electrode current of buried arc furnace
  • Method for measuring electrode current of buried arc furnace

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Embodiment Construction

[0031] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0032] The current measurement method of the submerged arc furnace electrode in the prior art mainly focuses on the main circuit of the electric furnace. Since the short network current of the electric furnace is connected with the secondary current of the electric furnace transformer, the internal structure of the electric furnace transformer can be used to measure the electrode current of the submerged arc electric furnace. Measurement.

[0033] Large-scale electric furnace transformers are divided into two main methods according to the voltage regulation method: the on-load voltage regulation method of the series transformer and the on-load voltage regulation method of the autotransformer, such as Figure 3A and Figure 3B Shown is a schematic diagram of the existing pressure regulation method.

[0034] Refer to ...

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Abstract

The invention relates to a measurement method of electrode current of a submerged arc furnace, and the measurement method comprises: a current transformer is connected with a voltage regulation coil of a furnace transformer for measurement to measure the three-phase current of the secondary side of the current transformer, and the vector superposition is carried out on the three-phase current of the secondary side to obtain the electrode current which enters the furnace. Therefore, the measurement method of the electrode current of the submerged arc furnace has reliability, high accuracy, low cost, simpleness and easy operation.

Description

technical field [0001] The invention relates to a method for measuring current, in particular to a method for measuring electrode current of a submerged arc electric furnace. Background technique [0002] Submerged-arc electric furnaces are widely used in the smelting of industrial products such as yellow phosphorus, calcium carbide, and ferroalloys. The current electrode current of electric furnaces has changed from tens of thousands of amperes in the early days to nearly hundreds of thousands of amperes at present. The distribution is relatively large, the transformation and phase jump of the short network connection mode in front of the furnace, the asymmetry of the three-phase current, the frequent on-load voltage regulation of the transformer and the frequent change of the transformation ratio, the smelting environment and other factors make the electrodes of the submerged arc electric furnace It is difficult to measure the furnace current. [0003] The products produc...

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Application Information

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IPC IPC(8): G01R19/00
Inventor 刘广文
Owner BERIS ENG & RES CORP
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