CN201330260Y - Slag-roughing detection device in converter tapping process based on emissivity factor monitoring - Google Patents
Slag-roughing detection device in converter tapping process based on emissivity factor monitoring Download PDFInfo
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- CN201330260Y CN201330260Y CNU2009201048286U CN200920104828U CN201330260Y CN 201330260 Y CN201330260 Y CN 201330260Y CN U2009201048286 U CNU2009201048286 U CN U2009201048286U CN 200920104828 U CN200920104828 U CN 200920104828U CN 201330260 Y CN201330260 Y CN 201330260Y
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Abstract
A slag-roughing detection device in converter tapping process based on emissivity factor monitoring relates to the technical field of automatic control technology of metallurgical industry; the device is composed of an infrared sensor, a signal processing unit and a display alarm unit; the infrared sensor is connected with the signal processing unit; the signal processing is connected with the display alarm unit; in the converter tapping process, the molten steel or steel slag outwards radiates infrared ray. The infrared sensor detects the two infrared lights having different wavelengths with the wavelength in the range of 0.76-1.5 microns; the signal processing unit converts the twp paths of infrared lights into electrical signals through a photoelectric sensor, and executes analog amplification and analog/digital conversion, finally solves the emissivity factor of the heat source according to the black body radiation law; wherein the emissivity factor below 0.6 is molten steel, and is steel slag with the emissivity factor over 0.8; the display alarm unit displays the emissivity factor of the heat source along the curve of time changing, and alarms when the steel slag occurs. The device is a non-contact measurement device, having good measuring effect, convenient use and low cost.
Description
Technical field
The utility model relates to metallurgical industry automatic control technology field, particularly provides a kind of based on slag proofing unit under the converter tapping process of emittance monitoring.
Background technology
Slag is mainly derived from the slag former of the oxide compound that forms after the contained element oxidation in molten iron and the steel scrap, impurity that metal charge is brought into, adding such as Wingdale, fluorite, silica etc., and oxygenant, desulfurization product and furnace lining material of being etched etc.Slag is sneaked into after the molten steel, can influence the quality of steel, sneaks into manyly more, and quality is poor more, and therefore, moment that monitoring is timely and accurately slagged tap and reporting to the police is very important.
At present, experimental study both at home and abroad or just having much at the following slag inspection method of production application is enumerated several main methods: (1) ultrasonic Detection Method below.The principle of ultrasonic Detection Method is to utilize when slag and no slag, and the difference that ultrasonic wave is sent signal and reflected signal realizes the detection to slag.This method to the requirement of ultrasonic probe than higher, can be in works better under the rugged environment extremely, and cost is than higher.(2) solenoid detection method.It is to utilize the different slags that detect of molten steel and the magnetic permeability of slag that solenoid detects ratio juris.The prerequisite that this method can be used is to transform all converter ladles, and high temperature greatly reduces the work-ing life of transmitter, and the transformation of system and the expense of maintenance are than higher.(3) vibration detection method.The vibration detection ratio juris is to utilize the proportion of slag and molten steel to differ bigger, and its flowability is also made a world of difference, therefore at eddy current flow during through ladle long nozzle, both have bigger difference to the souring of long nozzle, the vibration performance that therefore can cause ladle long nozzle changes, monitor MOLTEN STEEL FLOW state in the long nozzle by the difference of vibration performance on time domain or frequency domain that detects ladle long nozzle, thus slag under the indirect detection.Because there are influence in various ambient vibrations and operating process to system vibration performance, may make the accuracy of vibration detection be subjected to certain influence, are difficult to satisfy actual needs.(4) thermal imaging formula slag detection system.Make a video recording with camera alignment steel stream, monitoring tapping steel flows the surface, utilizes the different radiation behaviors of interior molten steel of infrared frequency scope and slag, uses image processing techniques, and differentiating by computer is molten steel or slag, shows when slag occurring and warning.But the cost of thermal imaging slag detection system is too expensive, has limited the popularization and the application of this method.
Based on above investigation and analysis, a kind of split hair caccuracy of present market in urgent need is described, is convenient to installation and maintenance and descends the slag detection system cheaply.
Summary of the invention
It is a kind of based on slag proofing unit under the converter tapping process of emittance monitoring that the purpose of this utility model is to provide, and infrared cheaply slag proofing unit down, the following slag that can measure the converter tapping process accurately and easily are constantly and report to the police.
The utility model is made up of dual wavelength Infrared survey transmitter, signal processing unit and display alarm unit.Infrared sensor is made up of spectral filter and photo-sensor, and spectral filter links to each other with photo-sensor; Signal processing unit amplifies chip, mould/number conversion chip and micro-chip by simulation to be formed, and simulation is amplified chip and linked to each other with mould/number conversion chip, and mould/number conversion chip links to each other with micro-chip; The display alarm unit is made up of liquid crystal display, warning light and emergency alarm bell, and micro-chip links to each other with liquid crystal display, warning light and emergency alarm bell respectively, and liquid crystal display shows the time dependent curve of emittance, and warning light and emergency alarm bell are as reporting to the police.
In the converter tapping process, molten steel or slag (being thermal source) be infrared radiation outwards.Infrared sensor detects the infrared light of two different wave lengths of wavelength in 0.76～1.5 micron (claiming short infrared again) scope simultaneously; Signal processing unit is converted to electrical signal by photo-sensor with this two-way infrared light, simulates and amplifies and mould/number conversion, solves the emittance of thermal source at last by blackbody radiation law, and wherein emittance is being molten steel below 0.6, is slag more than 0.8; The display alarm unit comes out the time dependent curve display of the emittance of thermal source, and reports to the police when slag occurring.
The utility model is a kind of non-cpntact measurement device, and advantage is that measurement effect is good, easy to use, cost is low.
Description of drawings
Fig. 1 is a slag proofing unit synoptic diagram under the converter tapping process.
Embodiment
Figure 1 shows that a kind of embodiment of the present utility model.
In the infrared sensor, select for use centre wavelength to be respectively the spectral filter of 0.8 micron and 0.9 micron, photo-sensor is selected PIN-10DPI for use.
In the signal processing unit, simulation is amplified chip and is selected op07 for use, and mould/number conversion chip is selected MAX185 for use, and micro-chip is selected AVR128 for use.
In the display alarm unit, liquid crystal display selects for use micro-chip directly to drive liquid crystal display, and warning light is selected conventional red alarm lamp for use, and emergency alarm bell is selected conventional emergency alarm bell for use.
During the operation of this device, transmitter and steel stream are separated by 5 ~ 10 meters, and sensor head is aimed at steel stream, and vertical with steel stream.After transmitter receives optical signal and is converted to electrical signal, by signal processing unit amplify, analog to digital conversion and emittance calculate.
The curve display of emittance is on the unitary liquid crystal display of display alarm, and when steel stream was clean steel water, emittance was generally below 0.6; When mixing out slag in the molten steel, emittance can increase, but less than 0.8; When being the clean steel slag, emittance is more than 0.8.Instrument judges whether to occur slag and provides warning according to the emittance value.
Claims (5)
1. one kind based on slag proofing unit under the converter tapping process of emittance monitoring, it is characterized in that, is made up of infrared sensor, signal processing unit and display alarm unit; Infrared sensor links to each other with signal processing unit, and signal processing unit links to each other with the display alarm unit.
According to the described proofing unit of claim 1, it is characterized in that 2, infrared sensor is made up of spectral filter and photo-sensor, spectral filter links to each other with photo-sensor; Signal processing unit amplifies chip, mould/number conversion chip and micro-chip by simulation to be formed, and simulation is amplified chip and linked to each other with mould/number conversion chip, and mould/number conversion chip links to each other with micro-chip; The display alarm unit is made up of liquid crystal display, warning light and emergency alarm bell, and the micro-chip of signal processing unit links to each other with liquid crystal display, warning light and emergency alarm bell respectively.
According to claim 1 or 2 described proofing units, it is characterized in that 3, infrared sensor detects the infrared light of two different wave lengths of wavelength in 0.76～1.5 micrometer range simultaneously; The signal processing unit emittance is being molten steel below 0.6, is slag more than 0.8.
According to claim 1 or 2 described proofing units, it is characterized in that 4, in the infrared sensor, select for use centre wavelength to be respectively the spectral filter of 0.8 micron and 0.9 micron, photo-sensor is selected PIN-10DPI for use.
According to claim 1 or 2 described proofing units, it is characterized in that 5, in the signal processing unit, simulation is amplified chip and selected op07 for use, mould/number conversion chip is selected MAX185 for use, and micro-chip is selected AVR128 for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201048286U CN201330260Y (en) | 2009-01-06 | 2009-01-06 | Slag-roughing detection device in converter tapping process based on emissivity factor monitoring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201048286U CN201330260Y (en) | 2009-01-06 | 2009-01-06 | Slag-roughing detection device in converter tapping process based on emissivity factor monitoring |
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| Publication Number | Publication Date |
|---|---|
| CN201330260Y true CN201330260Y (en) | 2009-10-21 |
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| CNU2009201048286U Expired - Fee Related CN201330260Y (en) | 2009-01-06 | 2009-01-06 | Slag-roughing detection device in converter tapping process based on emissivity factor monitoring |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103571994A (en) * | 2012-08-01 | 2014-02-12 | 宝山钢铁股份有限公司 | Infrared steel slag detection method of converter |
| CN104232837A (en) * | 2014-09-24 | 2014-12-24 | 杭州谱诚泰迪实业有限公司 | Monitoring device for tapping of converter/electric furnace and control method |
| CN106441584A (en) * | 2016-07-15 | 2017-02-22 | 天津理工大学 | Converter roughing slag detection method based on infrared temperature measurement |
| CN106498111A (en) * | 2016-10-19 | 2017-03-15 | 北京首钢国际工程技术有限公司 | A kind of automatic tapping control method based on converter second control system |
-
2009
- 2009-01-06 CN CNU2009201048286U patent/CN201330260Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103571994A (en) * | 2012-08-01 | 2014-02-12 | 宝山钢铁股份有限公司 | Infrared steel slag detection method of converter |
| CN103571994B (en) * | 2012-08-01 | 2015-06-17 | 宝山钢铁股份有限公司 | Infrared steel slag detection method of converter |
| CN104232837A (en) * | 2014-09-24 | 2014-12-24 | 杭州谱诚泰迪实业有限公司 | Monitoring device for tapping of converter/electric furnace and control method |
| CN106441584A (en) * | 2016-07-15 | 2017-02-22 | 天津理工大学 | Converter roughing slag detection method based on infrared temperature measurement |
| CN106498111A (en) * | 2016-10-19 | 2017-03-15 | 北京首钢国际工程技术有限公司 | A kind of automatic tapping control method based on converter second control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091021 Termination date: 20150106 |
|
| EXPY | Termination of patent right or utility model |