CN103966377A - Blast-furnace temperature on-line detection and acquisition system and on-line detection method - Google Patents
Blast-furnace temperature on-line detection and acquisition system and on-line detection method Download PDFInfo
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- CN103966377A CN103966377A CN201410225817.9A CN201410225817A CN103966377A CN 103966377 A CN103966377 A CN 103966377A CN 201410225817 A CN201410225817 A CN 201410225817A CN 103966377 A CN103966377 A CN 103966377A
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Abstract
The invention discloses a blast-furnace temperature on-line detection and acquisition system and on-line detection method. The system comprises a channel switching module and a singlechip, wherein the channel switching module is respectively connected with a thermocouple thermoprobe, an ultrasonic ranging probe and a signal conditioning module; the ultrasonic ranging probe is connected with a DC400-800V module; the signal conditioning module is connected with an A/D conversion module; the singlechip is connected with a wireless module, the A/D conversion module, a display unit, a function key and the DC400-800V module linkage; and an industrial personal computer is connected with the wireless module. The liner parts of the shaft and bosh of the blast furnace are respectively provided with a liner thickness/temperature acquisition device for detecting the liner thickness and temperature, and calculation is performed according to the heat transfer principle and the liner thickness and temperature parameters to obtain the blast-furnace temperature, thereby implementing real-time on-line detection of blast-furnace temperature.
Description
Technical field
The present invention relates to a kind of blast furnace temperature and detect online 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, molten iron, slag, the iron ore of molten state and mixture, the hot gas flow etc. of coke of thawing have formed 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, the measuring method of stickiness obtains while having.The characteristics such as that the operating mechanism of blast furnace often has is non-linear, time lag, higher-dimension, large noise, distribution parameter, cause at present the generally furnace temperature prediction control model of application to be also difficult to accurate and effective.
Do not have reliable furnace temperature prediction mathematical model to instruct, make operation with certain uncertainty, affected molten steel quality and blast furnace campaign.
In view of the critical role of blast-furnace smelting in industrial production, blast furnace investigators were devoted to improve the ways and means that blast furnace detects 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 more abundant, and method means are gradually improved, and only the thermometric of shaft and bosh are rarely had to report.
The bulk information that furnace temperature prediction model needs derives from test set, and reasoning result also needs to detect data and confirms.
If install effective test sets of parameter such as body of heater scaling loss situation, shape of charge level on blast furnace, can greatly 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 to overcome the defect of prior art, provide a kind of blast furnace temperature to detect online acquisition system and online test method, it installs lining thickness, Temperature sampler by the furnace lining position at 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 detect formed by multiple measurement point, the sensor of each measurement point is made up of multiple probes again, data are multidimensional, complexity more, quantity of information is larger.Therefore the present invention has Research Significance and real promotion prospect very much.
For addressing the above problem, the present invention adopts following technical scheme:
The invention provides a kind of blast furnace temperature and detect online acquisition system, described system comprises channel switching module and micro-chip, channel switching module is connected with thermocouple temperature measurement probe, ultrasonic distance measuring probe and signal condition module respectively, ultrasonic distance measuring probe is connected with DC400-800V module, signal condition module is connected with A/D modular converter, micro-chip is connected with wireless module, A/D modular converter, indicating meter, function key, DC400-800V module, and 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 apart from metal measuring staff a distance, solid is imbedded armored thermocouple temperature measurement probe.
The present invention provides a kind of blast furnace temperature online test method simultaneously, comprises the steps:
Step 1: the laying that blast furnace temperature is detected online to acquisition system environmental facies in complicated State of Blast Furnace are combined, at hot blast to blowing up, solid charge wash away downwards with the environment such as complicated chemical reaction under, set up sensor with ANSYS software and lay realistic model, Reasonable Arrangement to sensor instructs, and guarantees the accuracy of synchronizeing erosion and furnace lining thermometric of furnace lining and metal measuring staff in lining thickness collector;
Step 2: imbed metal measuring staff as range finding medium in the furnace wall of shaft, bosh, at the cold junction of metal measuring staff, piezoquartz ultrasonic ranging probe is installed, utilize ultrasonic measuring distance technology to measure bar long, i.e. lining thickness;
Step 3: in the space centered by metal measuring staff, in the furnace lining of measuring staff a distance, solid is imbedded the thermocouple temperature measurement probe of temperature of furnace lining collector, measures the temperature of the point for measuring temperature of burying underground in furnace lining;
Step 4: the data transmission that by wireless module, thickness is gathered to the lining thickness in micro-chip and the temperature of furnace lining in temperature acquisition micro-chip respectively, to industrial computer, according to the relation of temperature in stove and lining thickness and temperature of furnace lining, calculates furnace temperature.
Blast furnace temperature of the present invention detects acquisition system signals transmission online:
Channel switching module is chosen after a road collector, the temperature of furnace lining collecting or thickness data are transferred to signal condition module, signal condition module is transferred to A/D modular converter by the signal after conditioning and carries out mould, number conversion, send into afterwards micro-chip and carry out the processing such as linearizing, scale conversion, in the temperature of furnace lining that obtains after processing and lining thickness data are shown on indicating meter, 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, demonstration.Function key is used for carrying out the switching input of different parameters.
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 in high pressure excitation and carries out distance measurement, the signal of its output is nursed one's health through signal conditioning circuit, change and thickness signal is become to numerary signal send into micro-chip by A/D, and show.Meanwhile, thickness signal transfers to industrial computer through wireless module and stores and show.In the furnace wall apart from metal measuring staff a distance, solid is imbedded armored thermopair (temperature probe), measure the temperature of the point for measuring temperature of burying underground in furnace lining, the signal of thermocouple temperature measurement probe output, after thermocouple signal processing module is processed, is converted to numerary signal and sends into micro-chip and process and display.Meanwhile, temperature of furnace lining signal imports industrial computer into by wireless module and stores and show.Bury temperature a little by detecting lining thickness underground with corresponding, utilize heat transfer principle, in industrial computer, can calculate in real time furnace temperature-furnace lining hot-side temperature.
Feature of the present invention is the temperature data of Real-time Collection shaft, bosh, and detect formed by multiple measurement point, the sensor of each measurement point is made up of multiple probes again, data are multidimensional, complexity more, 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 that the blast furnace temperature based on lining thickness and temperature of furnace lining detects collector online, burying underground through furnace wall of lining thickness sensor, the cold junction that is embedded in furnace lining of temperature of furnace lining sensor is multiple spot and distributes, to avoid, in the situation that shaft, bosh suffer erosion, being positioned at furnace lining place, the thermopair that adopts traditional method to bury underground is also burnt, or the erosion degree of furnace lining cannot measure, bring difficulty to furnace temperature detection herein.This method can detect blast furnace temperature online, continuously, can guarantee real-time, accuracy that furnace temperature detects.With the control strategy that instructs the blast furnace such as filler, air-supply to produce, furnace temperature is remained on to optimum regime, improve molten steel quality and output, increase blast furnace campaign.
Brief description of the drawings
Fig. 1 is Wall of Blast Furnace axial section of the present invention, and kiln lining thickness measuring sensor is inserted along furnace wall thickness direction in the center in region between adjacent four copper cooling walls.
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 that blast furnace temperature of the present invention detects acquisition system functional block diagram online.
Embodiment
As shown in Figure 3, the invention provides a kind of blast furnace temperature and detect online acquisition system, described system comprises channel switching module and micro-chip, channel switching module is connected with thermocouple temperature measurement probe, ultrasonic distance measuring probe and signal condition module respectively, ultrasonic distance measuring probe is connected with DC400-800V module, signal condition module is connected with A/D modular converter, micro-chip is connected with wireless module, A/D modular converter, indicating meter, function key, DC400-800V module, and industrial computer is connected with wireless module.
Blast furnace temperature detects acquisition system signals transmission online:
Channel switching module is chosen after a road collector, the temperature of furnace lining collecting or thickness data are transferred to signal condition module, signal condition module is transferred to A/D modular converter by the signal after conditioning and carries out mould, number conversion, send into afterwards micro-chip and carry out the processing such as linearizing, scale conversion, in the temperature of furnace lining that obtains after processing and lining thickness data are shown on indicating meter, 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, demonstration.Function key is used for carrying out the switching input of different parameters.
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 apart from metal measuring staff a distance, solid is imbedded 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 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, buries thermopair underground at the radial section of furnace wall;
2) for fear of the scaling loss of thermopair, on the section of furnace lining cold junction, bury five-element's thermopair underground, five of every row.
3) consider the error that theoretical analysis exists, in order to improve the precision of blast furnace temperature-measuring, in furnace lining, bury multiple thermopairs underground, distribute to obtain temperature of furnace lining.
According to the temperature of point for measuring temperature and the distance of this point apart from furnace lining hot junction, just can determine the temperature in furnace lining hot junction.
Be specially:
Step 1: the laying that blast furnace temperature is detected online to acquisition system combines with complicated furnace inner environment, at hot blast to blowing up, solid charge wash away downwards with the environment such as complicated chemical reaction under, set up collector with ANSYS software and lay realistic model, Reasonable Arrangement to sensor instructs, and guarantees the accuracy of synchronizeing erosion and furnace lining thermometric of furnace lining and measuring staff in thickness measuring collector.
Step 2: imbed metal measuring staff as range finding medium in the furnace wall of shaft, bosh, at the cold junction of measuring staff, piezoquartz (range finding probe) is installed, utilize 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, in the furnace lining of measuring staff a distance, solid is imbedded temperature of furnace lining collector (thermocouple temperature measurement probe), measures the temperature of the point for measuring temperature of burying underground in furnace lining.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 installation of sensors is in the furnace lining part of Wall of Blast Furnace, along parallel installation 5 row of isothermal surface, 5 thermopairs of every row.The temperature of furnace lining scope detecting is: 700-1200 DEG C.As shown in Figure 2.
Step 4: by wireless module the data transmission that represents lining thickness and temperature of furnace lining in micro-chip to industrial computer, utilize heat transfer principle, the temperature measuring model of setting up according to temperature in stove and lining thickness and temperature of furnace lining, calculates furnace temperature.
Finally it should be noted that: obviously, above-described embodiment is only for example of the present invention is clearly described, and the not restriction 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 without also giving exhaustive to all embodiments.And the apparent variation of being amplified out thus or variation are still among protection scope of the present invention.
Claims (3)
1. a blast furnace temperature detects acquisition system online, it is characterized in that, described system comprises channel switching module and micro-chip, channel switching module is connected with thermocouple temperature measurement probe, ultrasonic distance measuring probe and signal condition module respectively, ultrasonic distance measuring probe is connected with DC400-800V module, signal condition module is connected with A/D modular converter, and micro-chip is connected with wireless module, A/D modular converter, indicating meter, function key, DC400-800V module, and industrial computer is connected with wireless module.
2. blast furnace temperature as claimed in claim 1 detects acquisition system online, it 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 apart from metal measuring staff a distance, solid is imbedded armored thermocouple temperature measurement probe.
3. blast furnace temperature online test method, is characterized in that: comprise the steps:
Step 1: the laying that blast furnace temperature is detected online to acquisition system environmental facies in complicated State of Blast Furnace are combined, at hot blast to blowing up, solid charge wash away downwards with the environment such as complicated chemical reaction under, set up sensor with ANSYS software and lay realistic model, Reasonable Arrangement to sensor instructs, and guarantees the accuracy of synchronizeing erosion and furnace lining thermometric of furnace lining and metal measuring staff in lining thickness collector;
Step 2: imbed metal measuring staff as range finding medium in the furnace wall of shaft, bosh, at the cold junction of metal measuring staff, piezoquartz ultrasonic ranging probe is installed, utilize ultrasonic measuring distance technology to measure bar long, i.e. lining thickness;
Step 3: in the space centered by metal measuring staff, in the furnace lining of measuring staff a distance, solid is imbedded the thermocouple temperature measurement probe of temperature of furnace lining collector, measures the temperature of the point for measuring temperature of burying underground in furnace lining;
Step 4: the data transmission that by wireless module, thickness is gathered to the lining thickness in micro-chip and the temperature of furnace lining in temperature acquisition micro-chip respectively, to industrial computer, according to the relation of temperature in stove and lining thickness and temperature of furnace lining, calculates furnace temperature.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104596660A (en) * | 2014-12-31 | 2015-05-06 | 中冶长天国际工程有限责任公司 | Rotary kiln temperature detection device and method |
| CN106435070A (en) * | 2016-10-31 | 2017-02-22 | 马鞍山钢铁股份有限公司 | Blast furnace shaft temperature management system and method |
| CN108035707A (en) * | 2017-11-15 | 2018-05-15 | 中国石油天然气股份有限公司 | Dangerous temperature monitoring method before a kind of combustion in situ igniting |
| CN108474693A (en) * | 2016-01-18 | 2018-08-31 | 三菱电机株式会社 | Measurement device and assay method |
| 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 |
| CN114020069A (en) * | 2021-11-05 | 2022-02-08 | 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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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104596660A (en) * | 2014-12-31 | 2015-05-06 | 中冶长天国际工程有限责任公司 | Rotary kiln temperature detection device and method |
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| CN106435070A (en) * | 2016-10-31 | 2017-02-22 | 马鞍山钢铁股份有限公司 | Blast furnace shaft temperature management system and method |
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| CN108035707A (en) * | 2017-11-15 | 2018-05-15 | 中国石油天然气股份有限公司 | Dangerous temperature monitoring method before a kind of combustion in situ igniting |
| 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 |
| CN114020069A (en) * | 2021-11-05 | 2022-02-08 | 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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