CN103966377B - Blast furnace temperature on-line checkingi acquisition system and online test method - Google Patents
Blast furnace temperature on-line checkingi acquisition system and online test method Download PDFInfo
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- CN103966377B CN103966377B CN201410225817.9A CN201410225817A CN103966377B CN 103966377 B CN103966377 B CN 103966377B CN 201410225817 A CN201410225817 A CN 201410225817A CN 103966377 B CN103966377 B CN 103966377B
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Abstract
The invention discloses a kind of blast furnace temperature on-line checkingi acquisition system and online test method, described system comprises channel switching module and micro-chip, channel switching module is popped one's head in thermocouple temperature measurement respectively, ultrasonic distance measuring probe and Signal-regulated kinase are connected, ultrasonic distance measuring probe and DC400-800V model calling, Signal-regulated kinase is connected with A/D modular converter, micro-chip and wireless module, A/D modular converter, indicating meter, function key, DC400-800V model calling, industrial computer is connected with wireless module.The present invention is by installing lining thickness, Temperature sampler at the furnace lining position of blast furnace stack, bosh, detect lining thickness and temperature, calculate according to heat transfer principle and lining thickness and temperature parameter, obtain high furnace temperature, realize blast furnace temperature real-time online and detect.
Description
Technical field
The present invention relates to a kind of blast furnace temperature on-line checkingi acquisition system and online test method, belong to blast furnace temperature detection technique field.
Background technology
From blast-furnace smelting flow process, the blast furnace ironmaking process under high temperature, high pressure, enclosed environment, the molten iron of thawing, slag, the iron ore of molten state and the mixture, hot gas flow etc. of coke constitute complicated fluid dynamics problem.
Furnace lining is constantly etched under these strong physical actions and chemical reaction, and traditional direct-detection means cannot be applied.The data such as blast furnace temperature, lining thickness often by outside, indirectly, have time stickiness measuring method obtain.The operating mechanism of blast furnace often has non-linear, time lag, higher-dimension, the greatly characteristic such as noise, distribution parameter, causes the furnace temperature prediction Controlling model generally applied at present also to be difficult to accurate and effective.
Do not have reliable furnace temperature prediction mathematical model to instruct, make operation with certain uncertainty, have impact on molten steel quality and blast furnace campaign.
In view of blast-furnace smelting critical role in the industrial production, blast furnace investigators were devoted to the ways and means improving blast furnace detection in recent years, and wherein the detection of furnace temperature is again the hot issue during blast furnace detects.The domestic research of the thermometric for molten iron, air port and furnace roof is comparatively abundant, and Method means is gradually improved, and only rarely has report to the thermometric of shaft and bosh.
The bulk information that furnace temperature prediction model needs derives from test set, and reasoning result also needs detection data to confirm.
If installed on blast furnace effective test sets of parameter such as body of heater scaling loss situation, shape of charge level, then greatly can promote the development of blast furnace temperature prognoses system.
Summary of the invention
The technical issues that need to address of the present invention are just the defect overcoming prior art, a kind of blast furnace temperature on-line checkingi acquisition system and online test method are provided, it is by installing lining thickness, Temperature sampler at the furnace lining position of blast furnace stack, bosh, detect lining thickness and temperature, calculate according to heat transfer principle and lining thickness and temperature parameter, obtain high furnace temperature, realize blast furnace temperature real-time online and detect.The temperature data of Real-time Collection shaft of the present invention, bosh, and detection is made up of multiple measurement point, and the sensor of each measurement point is made up of multiple probe again, and data are multidimensional, complexity more, and quantity of information is larger.Therefore the present invention has Research Significance and real promotion prospect very much.
For solving the problem, the present invention adopts following technical scheme:
The invention provides a kind of blast furnace temperature on-line checkingi acquisition system, described system comprises channel switching module and micro-chip, channel switching module is popped one's head in thermocouple temperature measurement respectively, ultrasonic distance measuring probe and Signal-regulated kinase are connected, ultrasonic distance measuring probe and DC400-800V model calling, Signal-regulated kinase is connected with A/D modular converter, micro-chip and wireless module, A/D modular converter, indicating meter, function key, DC400-800V model calling, industrial computer is connected with wireless module.
Described ultrasonic ranging probe is installed in metal measuring staff, and metal measuring staff is imbedded in the furnace wall of blast furnace stack, bosh; In the furnace wall of distance metal measuring staff a distance, solid imbeds armored thermocouple temperature measurement probe.
Invention also provides a kind of blast furnace temperature online test method, comprise the steps:
Step one: the laying of blast furnace temperature on-line checkingi acquisition system is combined with complicated State of Blast Furnace environment, at hot blast to blowing up, solid charge washes away downwards and under the environment such as complicated chemical reaction, set up sensor with ANSYS software and lay realistic model, the Reasonable Arrangement of sensor is instructed, guarantees the synchronous erosion of furnace lining with metal measuring staff in lining thickness collector and the accuracy of furnace lining thermometric;
Step 2: imbed metal measuring staff as range finding medium in the furnace wall of shaft, bosh, install piezoquartz ultrasonic ranging probe at the cold junction of metal measuring staff, utilize ultrasonic measuring distance technology to measure bar long, i.e. lining thickness;
Step 3: in the space centered by metal measuring staff, apart from the furnace lining of measuring staff a distance, solid imbeds the thermocouple temperature measurement probe of temperature of furnace lining collector, to measure in furnace lining bury the temperature of point for measuring temperature underground;
Step 4: the data that thickness gathers the lining thickness in micro-chip and the temperature of furnace lining in temperature acquisition micro-chip are transferred to industrial computer respectively by wireless module, according to the relation of in-furnace temperature and lining thickness and temperature of furnace lining, calculates furnace temperature.
Blast furnace temperature on-line checkingi acquisition system signals transmission of the present invention is:
After channel switching module chooses a road collector, the temperature of furnace lining collected or thickness data are transferred to Signal-regulated kinase, Signal transmissions after conditioning is carried out mould, number conversion to A/D modular converter by Signal-regulated kinase, send into micro-chip afterwards and carry out the process such as linearizing, scale conversion, while the temperature of furnace lining obtained after process and lining thickness data are shown over the display, by two wireless modules, be transferred to industrial computer, according to heat transfer principle with detect data, carry out blast furnace temperature in line computation and storage, display.The switching that function key is used for carrying out different parameters inputs.
Principle of work of the present invention is: in the furnace wall of shaft, bosh, imbed metal measuring staff as thickness measuring medium, Thicknesser probe issues out ultrasonic signal at high pressure activation and carries out distance measurement, its signal exported is nursed one's health through signal conditioning circuit, by A/D conversion, thickness signal is become numerary signal and send into micro-chip, and show.Meanwhile, thickness signal transfers to industrial computer through wireless module and carries out storing and showing.In the furnace wall of distance metal measuring staff a distance, solid imbeds armored thermopair (temperature probe), to measure in furnace lining bury the temperature of point for measuring temperature underground, the signal that thermocouple temperature measurement probe exports, after the process of thermocouple signal processing module, is converted to numerary signal feeding micro-chip and processs and displays.Meanwhile, temperature of furnace lining signal imports industrial computer into by wireless module and carries out storing and showing.By detecting lining thickness and the corresponding temperature buried underground a little, utilizing heat transfer principle, industrial computer can calculate furnace temperature-furnace lining hot-side temperature in real time.
Feature of the present invention is the temperature data of Real-time Collection shaft, bosh, and detection is made up of multiple measurement point, and the sensor of each measurement point is made up of multiple probe again, and data are multidimensional, complexity more, and quantity of information is larger.Therefore the present invention has Research Significance and real promotion prospect very much.
Beneficial effect of the present invention and advantage are, the present invention is the blast furnace temperature on-line checkingi collector based on lining thickness and temperature of furnace lining, lining thickness sensor bury underground through furnace wall, the cold junction being embedded in furnace lining of temperature of furnace lining sensor is multiple spot distribution, to avoid, when shaft, bosh suffer erosion, being positioned at furnace lining place, the thermopair adopting traditional method to bury underground is also burnt, or the erosion degree of furnace lining cannot measure, detect to furnace temperature herein and bring difficulty.This method can detect blast furnace temperature online, continuously, can guarantee real-time, accuracy that furnace temperature detects.To instruct the control strategy of the blast fumance such as filler, air-supply, furnace temperature is remained on optimum regime, improve molten steel quality and output, increase blast furnace campaign.
Accompanying drawing explanation
Fig. 1 is Wall of Blast Furnace axial section of the present invention, the center in region between adjacent four pieces of copper cooling walls, inserts kiln lining thickness measuring sensor along furnace wall thickness direction.
In Fig. 1,1-1 is Wall of Blast Furnace, and 1-2 is lining thickness sensor, and 1-3 is copper cooling wall;
Fig. 2 is Wall of Blast Furnace radial section figure of the present invention, thermocouple temperature measurement sensor bury principle underground: in Fig. 2,2-1 is furnace lining; 2-2 is edge brick; 2-3 is cooling stave; 2-4 is cooling stave fin; 2-5 is water-cooled tube; 2-6 is filler, and 2-7 is furnace shell; 2-8 is temperature of furnace lining sensor.
Fig. 3 is blast furnace temperature on-line checkingi acquisition system functional block diagram of the present invention.
Embodiment
As shown in Figure 3, the invention provides a kind of blast furnace temperature on-line checkingi acquisition system, described system comprises channel switching module and micro-chip, channel switching module is popped one's head in thermocouple temperature measurement respectively, ultrasonic distance measuring probe and Signal-regulated kinase are connected, ultrasonic distance measuring probe and DC400-800V model calling, Signal-regulated kinase is connected with A/D modular converter, micro-chip and wireless module, A/D modular converter, indicating meter, function key, DC400-800V model calling, industrial computer is connected with wireless module.
Blast furnace temperature on-line checkingi acquisition system signals transmission is:
After channel switching module chooses a road collector, the temperature of furnace lining collected or thickness data are transferred to Signal-regulated kinase, Signal transmissions after conditioning is carried out mould, number conversion to A/D modular converter by Signal-regulated kinase, send into micro-chip afterwards and carry out the process such as linearizing, scale conversion, while the temperature of furnace lining obtained after process and lining thickness data are shown over the display, by two wireless modules, be transferred to industrial computer, according to heat transfer principle with detect data, carry out blast furnace temperature in line computation and storage, display.The switching that function key is used for carrying out different parameters inputs.
As depicted in figs. 1 and 2, described ultrasonic ranging probe is installed in metal measuring staff, and metal measuring staff is imbedded in the furnace wall of blast furnace stack, bosh; In the furnace wall of distance metal measuring staff a distance, solid imbeds armored thermocouple temperature measurement probe.
Fig. 1 is Wall of Blast Furnace axial section of the present invention, and in Fig. 1,1-1 is Wall of Blast Furnace, and 1-2 is lining thickness sensor, and 1-3 is copper cooling wall; The center in region between adjacent four pieces of copper cooling walls, inserts kiln lining thickness measuring sensor along furnace wall thickness direction.
Fig. 2 is Wall of Blast Furnace radial section figure of the present invention, thermocouple temperature measurement sensor bury principle underground: in Fig. 2,2-1 is furnace lining; 2-2 is edge brick; 2-3 is cooling stave; 2-4 is cooling stave fin; 2-5 is water-cooled tube; 2-6 is filler, and 2-7 is furnace shell; 2-8 is temperature of furnace lining sensor.
1) think that the temperature of furnace lining circumferential direction is identical, bury thermopair underground at the radial section of furnace wall;
2) in order to avoid the scaling loss of thermopair, the section of furnace lining cold junction is buried five-element's thermopair underground, often row five.
3) considering the error that theoretical analysis exists, in order to improve the precision of blast furnace temperature-measuring, in furnace lining, burying multiple thermopair underground, to obtain temperature of furnace lining distribution.
According to the temperature of point for measuring temperature and the distance in this some distance furnace lining hot junction, the temperature in furnace lining hot junction just can be determined.
Be specially:
Step one: the laying of blast furnace temperature on-line checkingi acquisition system is combined with complicated furnace inner environment, at hot blast to blowing up, solid charge washes away downwards and under the environment such as complicated chemical reaction, set up collector with ANSYS software and lay realistic model, the Reasonable Arrangement of sensor is instructed, guarantees the synchronous erosion of furnace lining with measuring staff in thickness measuring collector and the accuracy of furnace lining thermometric.
Step 2: imbed metal measuring staff as range finding medium in the furnace wall of shaft, bosh, installs piezoquartz (range finding probe) at the cold junction of measuring staff, utilizes ultrasonic measuring distance technology to measure bar long, i.e. lining thickness.In Wall of Blast Furnace axial section, lining thickness collector is arranged on the centre of two sides copper cooling wall, and hot junction and the furnace lining of measuring staff are held level with both hands together.As shown in Figure 1.
Step 3: in the space centered by measuring staff, apart from the furnace lining of measuring staff a distance, solid imbeds temperature of furnace lining collector (thermocouple temperature measurement probe), to measure in furnace lining bury the temperature of point for measuring temperature underground.In Wall of Blast Furnace radial section figure, be followed successively by from outside to inside: furnace shell, filler, copper cooling wall, edge brick, furnace lining.Temperature of furnace lining sensor is arranged on the furnace lining part of Wall of Blast Furnace, along isothermal surface parallel installation 5 row, and often row 5 thermopairs.The temperature of furnace lining scope detected is: 700-1200 DEG C.As shown in Figure 2.
Step 4: by wireless module, the data representing lining thickness and temperature of furnace lining in micro-chip are transferred to industrial computer, utilize heat transfer principle, the temperature measuring model set up according to in-furnace temperature and lining thickness and temperature of furnace lining, calculates furnace temperature.
Last it is noted that obviously, above-described embodiment is only for example of the present invention is clearly described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of amplifying out or variation be still among protection scope of the present invention.
Claims (3)
1. a blast furnace temperature on-line checkingi acquisition system, it is characterized in that, described system comprises channel switching module and micro-chip, channel switching module is popped one's head in thermocouple temperature measurement respectively, ultrasonic distance measuring probe and Signal-regulated kinase are connected, ultrasonic distance measuring probe and DC400-800V model calling, Signal-regulated kinase is connected with A/D modular converter, and micro-chip and wireless module, A/D modular converter, indicating meter, function key, DC400-800V model calling, industrial computer is connected with wireless module.
2. blast furnace temperature on-line checkingi acquisition system as claimed in claim 1, is characterized in that, described ultrasonic ranging probe is installed in metal measuring staff, and metal measuring staff is imbedded in the furnace wall of blast furnace stack, bosh; In the furnace wall of distance metal measuring staff a distance, solid imbeds armored thermocouple temperature measurement probe.
3. blast furnace temperature online test method, is characterized in that: comprise the steps:
Step one: the laying of blast furnace temperature on-line checkingi acquisition system is combined with complicated State of Blast Furnace environment, at hot blast to blowing up, solid charge washes away downwards and under the environment such as complicated chemical reaction, set up sensor with ANSYS software and lay realistic model, the Reasonable Arrangement of sensor is instructed, guarantees the synchronous erosion of furnace lining with metal measuring staff in lining thickness collector and the accuracy of furnace lining thermometric;
Step 2: imbed metal measuring staff as range finding medium in the furnace wall of shaft, bosh, install piezoquartz ultrasonic ranging probe at the cold junction of metal measuring staff, utilize ultrasonic measuring distance technology to measure bar long, i.e. lining thickness;
Step 3: in the space centered by metal measuring staff, apart from the furnace lining of measuring staff a distance, solid imbeds the thermocouple temperature measurement probe of temperature of furnace lining collector, to measure in furnace lining bury the temperature of point for measuring temperature underground;
Step 4: the data that thickness gathers the lining thickness in micro-chip and the temperature of furnace lining in temperature acquisition micro-chip are transferred to industrial computer respectively by wireless module, according to the relation of in-furnace temperature and lining thickness and temperature of furnace lining, calculates furnace temperature.
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104596660B (en) * | 2014-12-31 | 2017-12-22 | 中冶长天国际工程有限责任公司 | A kind of kiln temperature detection means and method |
| CN108474693B (en) * | 2016-01-18 | 2020-05-01 | 三菱电机株式会社 | Measuring apparatus and measuring method |
| CN106435070B (en) * | 2016-10-31 | 2019-03-29 | 马鞍山钢铁股份有限公司 | A kind of blast-furnace shaft method for managing temperature |
| CN108035707B (en) * | 2017-11-15 | 2021-05-28 | 中国石油天然气股份有限公司 | Method for monitoring dangerous temperature before ignition in-situ combustion |
| CN108896197A (en) * | 2018-05-22 | 2018-11-27 | 安徽瑞鑫自动化仪表有限公司 | A kind of intelligent thermometric regulator control system under hot environment |
| CN112781790A (en) * | 2020-12-23 | 2021-05-11 | 西京学院 | Furnace leakage detection system and method for medium-frequency induction smelting furnace |
| CN114020069B (en) * | 2021-11-05 | 2022-12-09 | 北京北方华创微电子装备有限公司 | Temperature adjusting method, temperature adjusting device and semiconductor process equipment |
| CN114657302A (en) * | 2022-03-04 | 2022-06-24 | 宁波市计量测试研究院(宁波新材料检验检测中心) | Blast furnace temperature on-line measuring system |
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| KR20010059375A (en) * | 1999-12-30 | 2001-07-06 | 이구택 | furnace wall deposition and hearth temperature control system of furnace hearth bottom in a blast furnace |
| CN101343676A (en) * | 2008-09-02 | 2009-01-14 | 内蒙古科技大学 | On-line detecting device and method for temperature of blast furnace chamber |
| CN103031397A (en) * | 2012-12-31 | 2013-04-10 | 内蒙古科技大学 | On-line detection model for furnace temperature of blast furnace |
| CN203846046U (en) * | 2014-05-27 | 2014-09-24 | 内蒙古科技大学 | On-line blast furnace temperature detection and acquisition system |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010059375A (en) * | 1999-12-30 | 2001-07-06 | 이구택 | furnace wall deposition and hearth temperature control system of furnace hearth bottom in a blast furnace |
| CN101343676A (en) * | 2008-09-02 | 2009-01-14 | 内蒙古科技大学 | On-line detecting device and method for temperature of blast furnace chamber |
| CN103031397A (en) * | 2012-12-31 | 2013-04-10 | 内蒙古科技大学 | On-line detection model for furnace temperature of blast furnace |
| CN203846046U (en) * | 2014-05-27 | 2014-09-24 | 内蒙古科技大学 | On-line blast furnace temperature detection and acquisition system |
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