CN110986612A

CN110986612A - Monitoring device for molten metal treatment furnace

Info

Publication number: CN110986612A
Application number: CN201911300421.5A
Authority: CN
Inventors: 江维; 田志明
Original assignee: Guangde Yinda Induction Furnace Complete Equipment Co ltd
Current assignee: Guangde Yinda Induction Furnace Complete Equipment Co ltd
Priority date: 2019-12-17
Filing date: 2019-12-17
Publication date: 2020-04-10

Abstract

The invention relates to the technical field of molten metal treatment furnaces, in particular to a monitoring device for a molten metal treatment furnace, which comprises a hearth, a refractory furnace lining, a coil, an air brick, an optical fiber sensor, a signal processor and an LCD display. The invention has the beneficial effects that: permanent furnace lining attenuate or the crackle of furnace and during the production gap, molten metal in the furnace will flow into in the gap, when molten metal is close optical fiber sensor, optical fiber sensor senses the permanent furnace lining temperature rise of the furnace here, and with temperature and position signal transport to signal processor in, resolve temperature and position signal by signal processor, and control LCD display shows, supply the service behavior of fortune dimension personnel discernment and judge the permanent furnace lining of furnace, handle the permanent furnace lining of furnace based on actual conditions, to sum up, through the monitoring devices of this application, monitoring devices's misinformation temperature phenomenon has been reduced to a certain extent in the traditional art at least.

Description

Monitoring device for molten metal treatment furnace

Technical Field

The invention relates to the technical field of molten metal treatment furnaces, in particular to a monitoring device for a molten metal treatment furnace.

Background

In the industries of iron and steel works, casting and the like, ferrous and nonferrous metals are required to be refined, decontaminated and prepared, particularly, in the aspect of special metal treatment, a molten metal treatment furnace such as a smelting furnace is usually used in the treatment, when the smelting furnace is used for smelting and treating molten metal, a hearth plays a role in heat insulation protection of the smelting furnace, once a furnace lining in the hearth is damaged, if the furnace lining can not be found and replaced in time, equipment can be seriously damaged, and personal safety is endangered.

The traditional various hearth measuring and protecting devices cannot accurately judge the damaged part, and have poor reliability and serious false alarm.

Disclosure of Invention

The invention aims to overcome the problems in the prior art and provides a monitoring device for a molten metal treatment furnace, which can solve the problems in the prior art at least to a certain extent.

In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme:

the utility model provides a monitoring devices for molten metal treatment furnace, includes the furnace of molten metal treatment furnace, the furnace bottom is equipped with the refractory lining rather than inside intercommunication, the cover is equipped with the coil on the refractory lining outer wall, the coil is by outside alternating current power supply, refractory lining bottom is equipped with the inside mounting groove of intercommunication, sealing connection has the air brick in the mounting groove, be equipped with a plurality of optical fiber sensor along its axial array on the furnace outer wall, optical fiber sensor electric connection has signal processor, signal processor electric connection has the LCD display.

Furthermore, a sealing cover is arranged at the top of the hearth.

Furthermore, a connecting flange seat is arranged at the bottom of the hearth and sleeved on the coil.

Further, the signal processor is also electrically connected with a buzzer.

The invention has the beneficial effects that: when a gap is generated due to the reduction or the crack of the permanent furnace lining of the hearth, the molten metal in the hearth flows into the gap, when the molten metal is close to the optical fiber sensor, the optical fiber sensor senses the temperature rise of the permanent furnace lining of the hearth and transmits the temperature and position signals to the signal processor, the signal processor analyzes the temperature and position signals and controls the LCD display to display the temperature and position signals, operation and maintenance personnel can identify and judge the use condition of the permanent furnace lining of the hearth, the permanent furnace lining of the hearth is processed based on the actual condition, and in conclusion, by the monitoring device, the false alarm temperature of the monitoring device in the traditional technology is reduced to at least a certain degree, the temperature measurement error is small, so that the fault point can be accurately positioned, the damage degree of the permanent furnace lining of the hearth can be visually monitored through the LCD display, and the use condition of the permanent furnace lining of the hearth can be rapidly monitored, because the optical fiber sensor works based on optical signals, the optical fiber sensor can work in a strong electromagnetic environment and a high-temperature environment in an anti-interference manner.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

the reference numerals are explained below:

1-sealing cover, 2-molten metal, 3-hearth, 4-connecting flange seat, 5-coil, 6-refractory furnace lining, 7-air brick, 8-optical fiber sensor, 9-signal processor and 10-LCD.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, a monitoring device for molten metal processing furnace comprises a furnace chamber 3 of the molten metal processing furnace, a sealing cover 1 is arranged at the top of the furnace chamber 3, molten metal 2 is conveyed into the furnace chamber 3 through the prior art, the sealing cover 1 is closed to seal the interior of the furnace chamber 3, a refractory lining 6 communicated with the interior of the furnace chamber 3 is arranged at the bottom of the furnace chamber 3, a coil 5 is sleeved on the outer wall of the refractory lining 6, the coil 5 is powered by an external alternating current power supply, a changing magnetic field is generated around the coil, a path of magnetic lines of force is generated in the molten metal, the magnetic resistance of the molten metal is large, eddy current heat and electromagnetic force are generated to stir the molten metal, the purpose of stirring and heating the molten metal is achieved, the molten metal 2 in the furnace chamber 3 generates high temperature, the high temperature is transmitted to the refractory lining 6, a mounting groove communicated with the interior of the refractory lining 6 is arranged at, an external argon blowing device conveys inert gases such as argon into a gas permeable brick 7 through a pipeline, the inert gases enter a refractory furnace lining 6 through a gap of the gas permeable brick 7 and then enter a molten metal 2, the argon expands and floats after being heated, impurities in the molten metal 2 are driven to float to the liquid level of the molten metal 2, a plurality of optical fiber sensors 8 are arranged on the outer wall of a hearth along the axial direction of the molten metal, the optical fiber sensors 8 can detect the temperature based on the Raman effect, the optical fiber sensors 8 are electrically connected with a signal processor 9, the signal processor 9 is usually computer equipment, the signal processor 9 is electrically connected with an LCD (liquid crystal display) 10, an external power supply supplies power to the signal processor 9, the LCD 10 and the optical fiber sensors 8, when the hearth is locally thinned or cracked to generate gaps, the molten metal in the hearth flows into the gaps, and when the molten metal is close to the optical fiber sensors, the optical fiber sensor senses the temperature rise of the permanent furnace lining of the hearth, the temperature and position signals are transmitted to the signal processor, the signal processor analyzes the temperature and position signals, the LCD display is controlled to display the temperature and position signals, operation and maintenance personnel can recognize and judge the service condition of the permanent furnace lining of the hearth, and the permanent furnace lining of the hearth is processed based on actual conditions.

The bottom of the hearth 3 is provided with a connecting flange seat 4, the connecting flange seat 4 is sleeved on the coil 5, and the connecting flange seat 4 protects the refractory lining 6 and the coil 5.

The signal processor 9 is also electrically connected with a buzzer (not shown in the figure), and when the signal processor 9 gives an alarm based on the temperature signal, the buzzer can generate alarm information, so that operation and maintenance personnel can operate and maintain the refractory furnace lining 6 in time.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a monitoring devices for molten metal processing furnace, includes furnace (3) that the molten metal handled the stove, furnace (3) bottom is equipped with refractory lining (6) rather than inside intercommunication, a serial communication port, the cover is equipped with coil (5) on refractory lining (6) outer wall, coil (5) are supplied power by outside alternating current power supply, refractory lining (6) bottom is equipped with its inside mounting groove of intercommunication, sealing connection has air brick (7) in the mounting groove, be equipped with a plurality of optical fiber sensor (8) along its axial array on furnace (3) outer wall, optical fiber sensor (8) electric connection has signal processor (9), signal processor (9) electric connection has LCD display (10).

2. A molten metal processing furnace monitoring device according to claim 1, characterized in that a sealing cover (1) is provided on the top of the furnace chamber (3).

3. The monitoring device for the molten metal processing furnace according to claim 1, wherein the bottom of the hearth (3) is provided with a connecting flange seat (4), and the connecting flange seat (4) is sleeved on the coil (5).

4. The monitoring device for the molten metal processing furnace according to claim 1, wherein the signal processor (9) is further electrically connected with a buzzer.