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Lining thickness detector of smelting furnace

A metallurgical furnace and thickness detection technology, applied in electromagnetic measuring devices, electric/magnetic thickness measurement, etc., can solve problems such as being susceptible to interference, troublesome furnace construction, and malfunction.

Active Publication Date: 2006-03-15
朱兴发
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The furnace leakage alarm device used in the past generally needs to lay stainless steel wire mesh in the furnace lining as an electrode for testing the voltage when the furnace lining is knotted. The furnace building work is more troublesome.
Moreover, it is susceptible to interference and malfunctions

Method used

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  • Lining thickness detector of smelting furnace

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Embodiment Construction

[0006] Referring to the accompanying drawings, its structure is that the output end of the rectifier bridge 1 outputting low-voltage DC voltage is directly connected to the induction coil 4 through the choke inductance L, and the other output end of the rectifier bridge 1 is connected to the furnace bottom electrode 5 through the resistor R2.

[0007] When working, the external power supply is stepped down by a transformer, rectified by a rectifier bridge, and the rectifier bridge outputs a low-voltage DC voltage to be added between the induction coil 4 and the furnace bottom electrode 5 . One end of the rectifier bridge output low-voltage DC voltage is directly connected to the induction coil 4 through the choke inductance L. The other end is connected to the furnace bottom electrode 5 through a resistor R2. When the furnace lining is normal, the current passing through the resistor R2 is very small, and the divided voltage on the resistor R2 is also very small. At this time,...

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Abstract

A thickness detection device of metallurgical furnace lining is prepared as connecting one end of rectifier bridge outputting low DC voltage directly to induction coil through choke inductance and another end to electrode at furnace bottom through resistance. It features that alarm signal can be launched out by alarm circuit according to positive voltage outputted by comparator when furnace lining low resistance is caused by lining pinchout or by metal liquid leakage to make big voltage drop on resistance and if said voltage drop exceeds set voltage on comparator.

Description

technical field [0001] The invention relates to a furnace lining thickness monitoring device for a crucible-type metallurgical melting furnace. Belongs to the technical field of metallurgical smelting furnace alarm Background technique [0002] The furnace leakage alarm device used in the past generally needs to lay stainless steel wire mesh in the furnace lining as an electrode for testing the voltage when the furnace lining is knotted, and the furnace building work is more troublesome. Moreover, it is susceptible to interference and misoperation. Contents of the invention [0003] The purpose of the present invention is to overcome the defects in the prior art and propose a furnace lining thickness monitoring device. It does not need to lay stainless steel wire mesh in the furnace lining, which improves the working efficiency of furnace construction. The technical solution of the present invention is characterized in that one end of the rectifier bridge outputting low...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B7/06
Inventor 朱兴发
Owner 朱兴发
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