CN1051939A - Temp pick-up camera of material top surface in top of blast furnace - Google Patents
Temp pick-up camera of material top surface in top of blast furnace Download PDFInfo
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- CN1051939A CN1051939A CN 90102986 CN90102986A CN1051939A CN 1051939 A CN1051939 A CN 1051939A CN 90102986 CN90102986 CN 90102986 CN 90102986 A CN90102986 A CN 90102986A CN 1051939 A CN1051939 A CN 1051939A
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- temperature
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- blast furnace
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Abstract
The invention provides a kind of temp pick-up camera of material top surface in top of blast furnace, comprise stylus and signal processor and indicating meter two major parts, the middle feedback with long cable connects.It is by distinctive ray machine design, information acquisition and processing, the true temperature of material top surface in top of blast furnace each point can be provided, provide the charge level temperature on different furnace charges and the different controlling levels to distribute, the temperature changing trend of charge level temperature vertex position coordinates and track thereof and some specific positions is provided, and, stablize blast furnace operating for the operator provides correct processing parameter.
Description
The present invention relates to radiation pyrometry field, is a kind of blast furnace furnace roof temp pick-up camera.It is effective combination of infrared-ray machine scanning imagery technology, computer technology and utilisation technology.
To the measurement in material top surface in top of blast furnace temperature field, originally adopt the thermal pattern of charge level in the infrared vidicon picked-up stove.It can only do to observe qualitatively to temperature in the stove, and quantitative Treatment is lacked reliability.It can not obtain, and temperature is corresponding in the stove has and can carry out the information of quantitative Treatment reliably for carrying out robot calculator control.Image tube is owing to this inherent shortcoming own is eliminated.The substitute is the optical mechaical scanning thermal imaging system.Be called as name in the Japanese Patent of " thermal pattern instrument " (spy opens clear 51-130279, open day on November 12nd, 76), introduced the distribution image that can reproduce the object surface temperature, and in distribution plan, shown the technology of top temperature point and maximum temperature value thereof.But its stops just instrument on temperature distribution image, does not provide on the charge level with respect to the true temperature of center physical location in the stove, and the temperature distribution on as broad as long different furnace charges and the different material levels does not provide the variation track of temperature vertex yet.
The purpose of this invention is to provide a kind of temp pick-up camera of material top surface in top of blast furnace, it can provide the true temperature of charge level each point, provide the charge level temperature on different furnace charges and the different controlling levels to distribute, the temperature changing trend of charge level temperature vertex position coordinates and some specific positions is provided, thereby provides correct processing parameter for the operator.
The present invention seeks to reach like this: receive the ir radiation that comes from the emission of furnace charge charge level by the blast furnace furnace wall window by stylus.Said stylus comprises that diaphotoscope group, scanning prism, plane pendulum mirror two-dimentional scanning mechanism, infrared eye, synchronizing signal produce and warning circuit.Stylus converts ir radiation to the charge level temperature signal is delivered to master control room again by long cable signal processor, carries out selection of temperature signal and digitizing, is stored in calculator memory.By video circuit these information are shown on watch-dog in the mode of image then or print come out of the stove in the temperature distribution of charge level.
Characteristics of the present invention are that the entrance pupil and the blast furnace furnace wall window of the diaphotoscope group of said stylus coincides, and the small size, reliability and the cost that help window are low.The outgoing pupil and the scanning prism minute surface of diaphotoscope group coincide.The focal plane design of diaphotoscope group has the special curvature of field, is complementary with the scanning with plane pendulum mirror, and promptly the main body of last piece lens of primary optical system as basic imaging object lens, the method for crooked these lens of utilization reaches the numerical value of the curvature of the field of expection.The drive cam of plane pendulum mirror is also according to the curve plotting that is complementary with the lens mirror group curvature of field.Promptly, adopt the processing of computer programming wire cutting method according to the curvature of optical imaging focal plane.In stylus, use line-scanning frequency to make the frame scan drive-motor of speed control by frequency variation, driven plane pendulum mirror; Being equipped with interior adjustment integrated semiconductor pressure transmitter in stylus is the pressure warning unit of susceptible device susceptor.Also be provided with temperature alarming device in addition.
Other characteristics of the present invention are in said signal processor, are provided with to gather and show the device of charge level temperature vertex actual position coordinate on image and in the stove and be provided with to write down and the time dependent device of demonstration charge level temperature vertex coordinate.Be provided with the time dependent device of temperature of following the tracks of 20 specific positions in the stove.Also be provided with top gas temperature signal collection display unit.In said signal processor, also be provided with charge level height location signals collecting and set the device that the charge level height location triggers image pickup.Also be provided with the charge signal pickup assembly and try to achieve the device of display space charge level medial temperature.Can analyze the variation tendency that gas stream in the stove distributes with these data, reliable processing parameter is provided.
Below in conjunction with accompanying drawing the embodiment of the invention is elaborated.
Fig. 1 is the functional block diagram of temp pick-up camera of material top surface in top of blast furnace of the present invention.1 is furnace charge among the figure, and 2 is the furnace wall window, and 3 is stylus, and 4 is signal processor, and 5 is watch-dog, and 6 is printer, and 7 is keyboard.
Fig. 2 is the principle schematic of the stylus 3 of temp pick-up camera of material top surface in top of blast furnace.8 is electric motor among the figure, and 9 is wheel box, and 10 is cam, 11 are plane pendulum mirror, and 12 is infrared eye, and 13 is semiconductor cooler, 14 is prime amplifier, and 15 is the DC level recovery device, and 16 are temperature signal output, 17 are guard signal output, and 18 are synchronizing signal output, and 19 is synchronizing signal generator, 20 is warning circuit, and 21 is pressure transmitter, and 22 is temperature sensor, 23 is cubic prism square and driving mechanism thereof, and 24 is the diaphotoscope group.
Fig. 3 is the functional block diagram of the signal processor 4 of temp pick-up camera of material top surface in top of blast furnace.3 is stylus among the figure, 16 is temperature signal, 17 is guard signal, and 18 is synchronizing signal, and 25 is the material level signal, 26 is the furnace top gas temperature signal, 27 is the charge signal, and 28 is mould/number conversion and frame memory, and 29 is display buffer and video output, 30 is red pseudo-colours television signals output, 31 is green pseudo-colours television signals output, and 32 is blue look pseudo-colours television signals output, and 33 is composite synchronizing signal, 5 is watch-dog, 34 is the IBM-PC computer bus, and 35 is printed card, and 6 is printer, 36 is keyboard control circuit, and 7 is keyboard.
Fig. 4 is a position corresponding relation synoptic diagram in this pick-up camera image displaying area territory and the stove.2 is the furnace wall window among the figure, and 3 is stylus, and AEFB is minimum material level line, and CE1F1D is high charge level line, and trapezoidal ABCD is the vertical section of measured zone.Center in stove when E is minimum material level, the interior center of stove when E1 be high charge level, the center, display area when F is minimum material level, the center, display area when F1 is high charge level.
In blast furnace operating, need in time to understand stove internal combustion situation and head temperature, so that keep the good feed relation of ore and fuel.Too high head temperature can burn out furnace roof.It is a kind of needs of blast furnace operating that requirement can be observed stove inner top charge level temperature distribution image.
State of Blast Furnace liftout position pick-up camera comprises stylus and signal processor and indicating meter two major parts, and middle the feedback with long cable connects.
Temp pick-up camera of material top surface in top of blast furnace must receive the ir radiation of material by an optical window.This window plays the isolation and the protective effect of stylus and blast furnace chamber again, makes of sapphire, prevents dust gate and emergency safety valvegear with the multilayer air blowing that also has that optical window is supporting.But because the Top of BF center has bell accounting for, window can not be positioned at the Top of BF center, can only be positioned at the sidepiece of furnace roof.Promptly can only be an angle with the material surface observes.In addition, along with the variation of material level, the correspondence position of charge level and scope are changing in thermal image figure that thermal imaging system obtains and the stove.Because thermal pattern is perpendicular to the scanning center line of stylus light path.The present invention sends into signal processor with State of Blast Furnace liftout position signal by mould/number conversion.And be installed on the related parameter that has of particular location on the blast furnace and blast furnace according to the stylus parts, go out particular location in certain " pixel " pairing State of Blast Furnace on the temperature profile according to the concrete calculation of parameter of the light paths such as sweep angle of the two-dimensional directional of stylus again, and come the displays temperature distribution plan with the State of Blast Furnace internal coordinate.
The stylus of material top surface in top of blast furnace stylus includes optical system, two-dimensional scanner, infrared eye and amplifier thereof, synchronizing signal generation and parts such as pressure, temperature alarm circuit.Optical system is made up of the scanning device of diaphotoscope group and reflection.Lens adopt silicon materials to make, and are coated with anti-reflection film its average transmittance is reached more than 90%.Scanning device is placed on image space, promptly in set of lenses to the light path of detector.Horizontal sweep is finished by the rotation of cubic reflection right-angle prism, and its rotating speed is 100 cycle per minutes.The outer rotor of this prism and brshless DC motor is made of one.This incorporate structure has the advantage that volume is little, power consumption is little, the life-span is long.Vertical sweep is undertaken by the swing of plane mirror.The reciprocally swinging of plane mirror is by cam drive, and cam is driven through slowing down by synchronous machine, and cam trace is 1.5 seconds, and backhaul is 0.5 second.This scanning device provides the field range of 40 ° * 40 ° of systems.The entrance pupil and the blast furnace furnace wall window of the diaphotoscope group of said stylus coincide, and its outgoing pupil and scanning prism minute surface coincide.The focal plane of lens mirror group is designed to the special curvature of field, and the scanning of putting mirror with the plane is complementary.The drive cam of plane pendulum mirror, the also curve plotting that is complementary according to the diaphotoscope group curvature of field.As the frame scan drive-motor, used with line-scanning frequency and come speed governing, remove to drive plane pendulum mirror.
Stylus adopts unitary light waveguide type Te-Cd-Hg detector.Use semiconductor cooler, work in-20 degrees centigrade.The pairing instantaneous field of view of detector angle is 6.5 milli arcs.40 ° * 40 ° scopes contain 100 * 100 picture dot numbers in the visual field.The final spectral response wave band of optical system and detector is the 3.1-4.1 micron, be adapted in the normal stove charge level temperature 300-400 degree centigrade measurement, and has avoided carbon monoxide, the carbonic acid gas sorption to ir radiation.Present embodiment has adopted low noise prime amplifier and mercury-cadmium tellurid detector to be complementary, and temperature signal is amplified.In frequency range was 17 kilo hertzs analog signal channel, temperature signal obtained amplifying after the level amplitude that reaches certain, carried out DC level and recovered.Allow the level of temperature signal follow the absolute value of target emanation energy that certain corresponding relation is arranged, try to achieve target temperature according to the level of temperature signal then.This computation process is undertaken by computer in handler.
The mode that adopts photodiode emission, photodiode to receive in the stylus obtains the position signal of prism rotation and plane mirror swing.Form the synchronizing signal of row and frame.
Also has the pressure and temperature warning circuit in the stylus.They are a kind of bridge diagram, and adopting novel semi-conductor interior adjustment integrated pressure sensor and RTD sheet temperature sensor respectively is electric bridge one arm.The electric bridge output signal is sent into comparer with set(ting)value relatively after amplifying, as surpassing set(ting)value, engage relay is directly imported programme control circut in the master control room to guard signal.To prevent various components in excess pressure and the temperature infringement stylus.
The signal processor of temp pick-up camera of material top surface in top of blast furnace is made up of an IBM-PC 0520B computer and two blocks of pick-up camera special circuit plates.These two blocks of special circuit plates patch in the input and output of IBM-PC machine and expand on the notch.
First block of special circuit plate mainly act as mould/number conversion, linearizing and preserve an images information.Adopt interpolation technique that the picture dot number on row and the frame both direction is respectively doubled on the circuit card.Improve the quality that shows image and strengthen visual effect.On line direction, improve two times of sample frequency, promptly obtain the interpolation effect.On frame direction, circuit card is provided with line buffer and interpolating circuit, directly obtains interpolation.The data linearizing adopts look-up method to finish.The process of tabling look-up is finished with hardware mode, does not take the cpu time of computer.On circuit card, temperature signal by linearizer, passes through interpolation earlier again through after mould/number conversion, enters frame memory.
The analog signals of input processor also has blast furnace charge level position signal, four furnace top gas temperature signals and charge signal except temperature signal and synchronizing signal from stylus.On circuit card, use a multiway analog switch,, allow them enter mould/number conversion circuit, realize digitizing by the program gating.Read and deposit in internal memory by CPU (central processing unit).These data control thermal pattern input, computational picture in stove physical location, carry out relatively waiting in the process and will being used of temperature.
The task of second block of special circuit plate is a display thermal image.It includes video synchronization signal generation circuit, reads address generator, and display buffer, pseudo-color coding circuit also have video signal driver.Under the control of video synchronization signal, the display buffer content is read out, and by three pseudo-color coding circuit and three D/As, forms red, green, blue three tunnel television signalss.This three tunnel television signals adds that composite synchronizing signal imports TV monitor together, obtains reflecting the image of display buffer content.Display screen is design like this: thermal pattern is in central authorities.The right be color scale of temperature and Temperature numerical thereof, and the left side shows data calculated, the interior position coordinates of top temperature and stove thereof for example, the medial temperature of thermal pattern, the variable quantity of charge level position and medial temperature etc.Be actions menu and dialogue literal field below.Display buffer and calculator memory unified addressing, CPU (central processing unit) can be visited, and changes the content of display buffer, can reflect on display screen.Transmission effect according to setting and select to pass through central processing unit is conveyed into the display buffer to the thermal pattern information of a certain temperature range, realizes that thermal pattern shows.The charge level temperature vertex is track over time, and the temperature of interior certain specific position of stove is trend over time, and thermal pattern of different charges or the like all can be sent into display buffer to the result by CPU (central processing unit) and obtain showing.Or order printer prints the result.
Because adopt the IBM-PC computer to deal with machine, system software can use High-Level Language directly to develop.The task of system software is initialization system and monitors pick-up camera; Carry out the every function of pick-up camera by keyboard; Digital information and other data are handled with computing and realized screen display; Record and transmission thermal pattern and relevant information thereof; Carry out feedback control according to thermal pattern information and calculation result.
Through on probation and test, present embodiment reaches following technical indicator:
1. stylus
(1) temperature-measuring range: 50-800 degree centigrade.
(2) temperature measurement accuracy: full range ± 5%.
(3) temperature resolving power: when measured target is 180-200 degree centigrade, with 50 degrees centigrade of two kinds of color resolution.
(4) scanning angle: 40 ° * 40 °.
(5) sweep time: 2 seconds/width of cloth.
(6) number of scan points: be not less than 7650.
(7) focussing distance: 1 meter-∞.
(8) spectral response: 3.1-4.1 micron.
(9) infrared eye: thermoelectric refrigeration cadmium mercury telluride mono components and parts.
(10) operating ambient temperature: 0-45 degree centigrade.
(11) pressure test: housing can bear 4.9 * 10
5Pascal's withstand voltage test in 30 minutes.
(12) enclosure interior contains pressure switch, temperature switch and pickup system self check bulb.
2. control unit
(1) lower limit temperature is set: 50-800 degree centigrade.
(2) temperature amplitude is set: 50,100,200,300,400,500 degrees centigrade.
(3) visual input time:
A. automated manner: 2,4,8,16,32,64 seconds.
B. manual mode: import an images when pressing keyboard.
C. material level triggers: when reaching the material level setting, import an images.The material level setting point mostly is 5 points most.
(4) material level signaling interface: input direct current 1-5 volt (corresponding material level+2～-6 meter) also shows material level on indicating meter.
(5) information processing:
A. data presentation: temperature amplitude, lower limit temperature, top temperature and coordinate thereof, medial temperature, material level, target temperature value of all kinds, time (year, month, day, hour, min, second).
B. show furnace roof charge level circular heat image.
C. image display function: scanning image; The location full figure resembles; Histogram.
(6) data logging: the following data of real time record are on diskette:
A. temperature amplitude, lower limit temperature, top temperature and coordinate thereof, medial temperature, material level.
B. each trace point (maximum 20 points) temperature.
(7) the temperature time series figure of optional five setting points shows (the temperature coordinate divides 100-500,400-800 degree centigrade of two ranges).
The present invention has following good effect:
1, the optical design of this temp pick-up camera of material top surface in top of blast furnace makes the blast furnace furnace wall window do minimumly, and is all very favourable to safety, sealing, cost.
2, this temp pick-up camera of material top surface in top of blast furnace is simple in structure, row, frame scan mechanism compactness, and overall volume is small and exquisite, the reliability height.
3, easy to operate, the control system menu prompt; But expand new application function with the high-level language coding.
4, can obtain the interior actual position of stove of furnace roof charge level true temperature, reliable technological parameter is provided, stablize blast furnace operating.
Claims (1)
1, a kind of temp pick-up camera of material top surface in top of blast furnace, comprise that stylus receives the ir radiation that is come by the emission of furnace charge charge level by the blast furnace furnace wall window, said stylus contains the diaphotoscope group, scanning prism and plane pendulum mirror two-dimentional scanning mechanism, infrared eye, synchronizing signal produces and warning circuit, stylus converts ir radiation to the charge level temperature signal is fed to master control room again by long cable signal processor, carry out selection of temperature signal and digitizing, be stored in calculator memory, by video circuit these information are shown on watch-dog in the mode of image then or print come out of the stove in the temperature distribution of charge level, it is characterized in that:
A) entrance pupil of the diaphotoscope group of said stylus and blast furnace furnace wall window coincide, and the outgoing pupil and the scanning prism face of diaphotoscope group coincide;
B) design of the focal plane of said stylus diaphotoscope group has the special curvature of field, be complementary with scanning with plane pendulum mirror, promptly the main body of last piece lens of primary optical system as basic imaging object lens, the method for crooked these lens of utilization reaches the numerical value of the curvature of the field of expection; The drive cam of said plane pendulum mirror according to the curvature of optical imaging focal plane, adopts the computer programming wire cutting method to make;
C) use line-scanning frequency to make the frame scan drive-motor of speed control by frequency variation in the said stylus, driven plane pendulum mirror;
D) being equipped with interior adjustment integrated semiconductor pressure transmitter in stylus is the pressure warning unit of susceptible device susceptor;
E) in said signal processor, be provided with the device of collection and demonstration charge level temperature vertex actual position coordinate on image and in the stove and be provided with the time dependent device of demonstration charge level temperature vertex coordinate;
F) in said signal processor, be provided with the device of charge level height location signals collecting, the setting of charge level height location and triggering image pickup;
G) in said signal processor, be provided with top gas temperature signal collection and display unit;
H) in said signal processor, be provided with the charge signal pickup assembly, be convenient at adding charge-temperature analyze;
I) in said signal processor, be provided with the device of trying to achieve display space charge level medial temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90102986 CN1016797B (en) | 1990-11-17 | 1990-11-17 | Temp pick-up camera of material top surface in top of blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90102986 CN1016797B (en) | 1990-11-17 | 1990-11-17 | Temp pick-up camera of material top surface in top of blast furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1051939A true CN1051939A (en) | 1991-06-05 |
| CN1016797B CN1016797B (en) | 1992-05-27 |
Family
ID=4877855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90102986 Expired CN1016797B (en) | 1990-11-17 | 1990-11-17 | Temp pick-up camera of material top surface in top of blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1016797B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004002136A1 (en) * | 2002-06-25 | 2003-12-31 | University Of Science And Technology Beijing | Plug-in kiln video camera and image processing system |
| CN101907225A (en) * | 2009-06-05 | 2010-12-08 | 气体产品与化学公司 | Be used for the system and method that temperature data obtains |
| CN102455219A (en) * | 2010-10-25 | 2012-05-16 | 中国石油化工股份有限公司 | Fluidized bed reactor and method and device used for detecting temperature in reactor |
| CN102455218A (en) * | 2010-10-25 | 2012-05-16 | 中国石油化工股份有限公司 | Fluidized bed reactor as well as detection method and device used for detecting reactive state in reactor |
| CN102728591A (en) * | 2012-06-11 | 2012-10-17 | 东南大学 | Control method for vacuum pollution of moving part and cable in optical system |
| CN102784747A (en) * | 2012-07-16 | 2012-11-21 | 京东方科技集团股份有限公司 | High-temperature solidifying furnace |
| CN102879902A (en) * | 2012-10-08 | 2013-01-16 | 同济大学 | Cam-driven oscillating mirror mechanism |
-
1990
- 1990-11-17 CN CN 90102986 patent/CN1016797B/en not_active Expired
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004002136A1 (en) * | 2002-06-25 | 2003-12-31 | University Of Science And Technology Beijing | Plug-in kiln video camera and image processing system |
| CN101907225A (en) * | 2009-06-05 | 2010-12-08 | 气体产品与化学公司 | Be used for the system and method that temperature data obtains |
| CN101907225B (en) * | 2009-06-05 | 2013-11-13 | 气体产品与化学公司 | System and method for temperature data acquisition |
| CN102455218B (en) * | 2010-10-25 | 2015-03-11 | 中国石油化工股份有限公司 | Fluidized bed reactor as well as detection method and device used for detecting reactive state in reactor |
| CN102455219A (en) * | 2010-10-25 | 2012-05-16 | 中国石油化工股份有限公司 | Fluidized bed reactor and method and device used for detecting temperature in reactor |
| CN102455218A (en) * | 2010-10-25 | 2012-05-16 | 中国石油化工股份有限公司 | Fluidized bed reactor as well as detection method and device used for detecting reactive state in reactor |
| CN102455219B (en) * | 2010-10-25 | 2015-03-11 | 中国石油化工股份有限公司 | Fluidized bed reactor and method and device used for detecting temperature in reactor |
| CN102728591A (en) * | 2012-06-11 | 2012-10-17 | 东南大学 | Control method for vacuum pollution of moving part and cable in optical system |
| CN102728591B (en) * | 2012-06-11 | 2014-08-13 | 东南大学 | Control method for vacuum pollution of moving part and cable in optical system |
| CN102784747A (en) * | 2012-07-16 | 2012-11-21 | 京东方科技集团股份有限公司 | High-temperature solidifying furnace |
| US9423636B2 (en) | 2012-07-16 | 2016-08-23 | Boe Technology Group Co., Ltd. | High temperature curing oven |
| CN102784747B (en) * | 2012-07-16 | 2014-12-10 | 京东方科技集团股份有限公司 | High-temperature solidifying furnace |
| CN102879902A (en) * | 2012-10-08 | 2013-01-16 | 同济大学 | Cam-driven oscillating mirror mechanism |
| CN102879902B (en) * | 2012-10-08 | 2014-10-22 | 同济大学 | Cam-driven oscillating mirror mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1016797B (en) | 1992-05-27 |
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