CN202865254U - Converter flame temperature detection system - Google Patents
Converter flame temperature detection system Download PDFInfo
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- CN202865254U CN202865254U CN201220413260.8U CN201220413260U CN202865254U CN 202865254 U CN202865254 U CN 202865254U CN 201220413260 U CN201220413260 U CN 201220413260U CN 202865254 U CN202865254 U CN 202865254U
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Abstract
The application discloses a converter flame temperature detection system which comprises an image acquisition module for acquiring converter mouth flame image information, an image processing module which is connected with the image acquisition module and is used for pre-processing the flame image information to obtain a flame image, and a calculating module which is connected with the image processing module and is used for calculating temperature values of various pixels in the flame image depending on a non-linear relation between the radiation spectrum and the temperature of an object and acquiring flame temperature of the converter mouth depending on the temperature values of the various pixels. In the detection process, the converter flame temperature detection system disclosed by the application can be used for solving the problem that the convert mouth flame temperature cannot be continuously detected in the prior art, and the accuracy of the detection result is improved.
Description
Technical field
The application relates to the steel-making automation control area, particularly relates to a kind of converter flame temperature detection system.
Background technology
The control of steel-making terminal point is one of gordian technique of converter steelmaking, and the height of endpoint molten steel temperature has important impact to the quality of steel, so the measurement of endpoint molten steel temperature becomes the important technology of steel-making terminal point control.And flame temperature and liquid steel temperature have great dependency, be the important symbol of liquid steel temperature, therefore can obtain liquid steel temperature by the measurement to the flame temperature of converter mouth.
The flame temperature measurement of traditional converter mouth is to see fire by artificial experience, namely by brightness and the shape of converter mouth flamew, manually infers the temperature of flame.But the method is subject to the impact of the subjective mood of tester easily in testing process, causes the accuracy of detected result to reduce.
In the prior art, usually adopt thermocouple assembly, this device utilizes the funtcional relationship of trermoelectromotive force and temperature, make thermocouple indexing table, and the two ends of the conductor of two kinds of heterogeneities are bonded into the loop, an end that wherein directly is used as the measuring media temperature is called working end (being also referred to as measuring junction), and the other end is called cold junction (being also referred to as the compensation end) cold junction and links to each other with above-mentioned thermocouple indexing table.Its principle of work is: when the Measuring Object temperature, can cause the juncture temperature of above-mentioned joint different, thereby produce electromotive force, i.e. trermoelectromotive force in the loop.Finally, can obtain according to the funtcional relationship of trermoelectromotive force and temperature the temperature of object being measured, show by the temperature of thermocouple indexing table with object being measured.When although this thermocouple assembly has avoided the Traditional Man mode that the flame of converter mouth is detected, because the detected result inaccurate problem that the subjective emotion influence of tester causes.But, because this thermocouple assembly self is the consumption-type device, after using for some time, need to change thermopair.Therefore, the prior art thermocouple assembly can not be realized the continuous detecting to the converter mouth flamew temperature when detecting, affected the accuracy of detected result.
The utility model content
In view of this, the embodiment of the present application provides a kind of converter flame temperature detection system, can not realize the converter mouth flamew temperature is carried out the problem of continuous detecting to solve prior art.
To achieve these goals, the technical scheme that provides of the embodiment of the present application is as follows:
A kind of converter flame temperature detection system comprises:
Be used for obtaining the image capture module of converter mouth flamew graphic information;
Be connected with described image capture module, be used for described flame image information is carried out pre-treatment, obtain the image processing module of flame image;
Be connected with described image processing module, be used for existing nonlinear relation to calculate the temperature value of described each pixel of flame image according to radiation spectrum and the object temperature of object, and obtain the computing module of the flame temperature of converter mouth according to the temperature value of described each pixel.
Preferably, described image capture module comprises: two two infrared CCD cameras, zoom lens and filter glass, wherein:
Be respectively arranged with zoom lens on described two two infrared CCD cameras;
Be respectively arranged with filter glass on the described zoom lens.
Preferably, described filter glass is the bandpass filter of infrared band, and wavelength region is at 1100nm-2500nm, and bandwidth is 10nm.
Preferably, described image processing module comprises: be used for receiving the flame image information that described image capture module sends, and the storage unit that this information is preserved;
Be connected with described storage unit, be used for the flame image information of described storage unit is carried out the noise filtering unit of noise filtering;
Be connected with described noise filtering unit, be used for the flame image information behind the described noise filtering is carried out image segmentation, obtain the cutting unit of flame image.
Preferably; described image capture module also comprises: be provided with the form that gathers flame image information for image capture module on the outer wall, and the inner mechanical protection case that is provided with the space that can hold described filter glass, described zoom lens and described two two infrared CCD cameras.
Preferably, described image capture module also comprises: be installed in the described mechanical protection case, be used for the camera lens blow device that the surface dirt to the form of described mechanical protection case purges.
Preferably, the outer wall at described mechanical protection case is provided with inlet mouth and air outlet;
This device also comprises: be installed in the described mechanical protection case and be positioned at described inlet mouth place, be used for described mechanical protection case is carried out thermoregulator temperature control equipment.
Preferably, described mechanical protection case also comprises: be used for regulating simultaneously the elevation angle and the visual angle, the left and right sides of described two two infrared CCD cameras, guarantee that the picture of described two two infrared CCD collected by cameras has the camera adjustments structure of 98% above overlap ratio.
Preferably, also comprise: be arranged on described mechanical protection case top, be used for preventing that dust from dropping on the screening dust hood on the described mechanical protection case.
Preferably, also comprise: for the installation snap close that described screening dust hood is fixed on the described mechanical protection case.
By above technical scheme as seen, the disclosed converter flame temperature of the embodiment of the present application detection system mainly comprises image capture module, image processing module and computing module.During detection, at first obtain the flame image information of converter mouth by image capture module, then by image processing module this flame image information is carried out pre-treatment and obtain flame image, finally calculate the converter mouth flamew temperature by computing module by flame image.In testing process, in testing process, the application has solved the problem that prior art can not detect the converter mouth flamew temperature continuously, has improved the accuracy of detected result.
Description of drawings
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, the accompanying drawing that the following describes only is some embodiment that put down in writing among the application, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The structural representation of a kind of converter flame temperature detection system that Fig. 1 provides for the embodiment of the present application one;
The detailed construction synoptic diagram of a kind of converter flame temperature detection system that Fig. 2 provides for the embodiment of the present application two;
The mechanical protection case external structure synoptic diagram that Fig. 3 provides for the embodiment of the present application three;
The mechanical protection case internal plane that Fig. 4 provides for the embodiment of the present application three;
The detailed construction synoptic diagram of a kind of converter flame temperature detection system that Fig. 5 provides for the embodiment of the present application four;
When the converter mouth flamew that Fig. 6 provides for the embodiment of the present application six is strong, the effect contrast figure of flame image information before and after dividing processing;
In the time of a little less than the converter mouth flamew that Fig. 7 provides for the embodiment of the present application six, the effect contrast figure of flame image information before and after dividing processing;
The one-piece construction sterogram of a kind of converter flame temperature detection system that Fig. 8 provides for the embodiment of the present application;
The hygrogram of converter mouth flamew within certain period that the converter mouth flamew system for detecting temperature that Fig. 9 provides for the embodiment of the present application nine is measured.
Embodiment
In order to make those skilled in the art person understand better technical scheme among the application, below in conjunction with the accompanying drawing in the embodiment of the present application, technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment only is the application's part embodiment, rather than whole embodiment.Based on the embodiment among the application, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all should belong to the scope of the application's protection.
Embodiment one
The structural representation of a kind of converter flame temperature detection system that Fig. 1 provides for the embodiment of the present application one.
As shown in Figure 1, the disclosed converter flame temperature of the embodiment of the present application detection system comprises: image capture module 1, and image processing module 2 and computing module 3, and three modules are connected successively.
The Main Function of image capture module 1 is to obtain the converter mouth flamew graphic information, then with the flame image information output that obtains.Here the flame image information of output can be numerary signal.
The input terminus of image processing module 2 is connected with the output terminal of image capture module 1, image processing module 2 receives the flame image information of image capture module 1 output, and the flame image information that receives is carried out pre-treatment, obtain flame image, then with the flame image output that obtains.The pre-treatment here mainly refers to: will store from image capture module 1 resulting flame image information, noise filtering and image segmentation.Through after the pre-treatment, the noise in can filtering flame image information, and the flame image information after the filter out noise carried out image segmentation, obtain flame image.
The input terminus of computing module 3 is connected with the output terminal of image processing module 2, computing module 3 receives the flame image of image processing module 2 outputs, and radiation spectrum and object temperature according to object exist nonlinear relation to calculate the temperature value of each pixel in the described flame image, then obtain the flame temperature of converter mouth according to the temperature value of described each pixel.
By above technical scheme as seen, the converter flame temperature detection system that the embodiment of the present application provides mainly comprises image capture module, image processing module and computing module.During detection, at first obtain the flame image information of converter mouth by image capture module, then by image processing module this flame image information is carried out pre-treatment and obtain flame image, finally calculate the converter mouth flamew temperature by computing module by flame image.In testing process, the application has solved the problem that prior art can not detect the converter mouth flamew temperature continuously, has improved the accuracy of detected result.
Embodiment two
The detailed construction synoptic diagram of a kind of converter flame temperature detection system that Fig. 2 provides for the embodiment of the present application two.
As shown in Figure 2, the embodiment of the present application has been carried out refinement with image capture module on the basis of embodiment one.The converter flame temperature detection system that the embodiment of the present application provides comprises: image capture module 1, and image processing module 2 and computing module 3, and three modules are connected successively.Wherein image capture module 1 comprises: two infrared CCD cameras 111, zoom lens 112, filter glass 113, two infrared CCD cameras 121, zoom lens 122 and filter glass 123.
Wherein: image capture module comprises two two infrared CCD cameras, is respectively two infrared CCD cameras 111 and two infrared CCD camera 121.Take two infrared CCD cameras 111 as example, its mounting means is as follows: filter glass 113 is installed on the zoom lens 112, and zoom lens 112 is installed on two infrared CCD cameras 111.Identical, filter glass 123 is installed on the zoom lens 122, and zoom lens 122 is installed on two infrared CCD cameras 121.
Two two infrared CCD cameras in that the embodiment of the present application is finished according to above-mentioned mounting means combination by using different filter glass, obtain the flame image information under the different-waveband.
In addition, in the embodiment of the present application, zoom lens is 6-10 times of motorized zoom lens.Spectral filter is the bandpass filter of infrared band, and wavelength region is at 1100nm-2500nm, and bandwidth is 10nm, and the user can select according to field demand.
By above technical scheme as seen, the converter flame temperature detection system that the embodiment of the present application provides mainly comprises image capture module, image processing module and computing module, and three modules are connected successively.The internal structure of image capture module is provided simultaneously, has comprised two two infrared CCD cameras, be installed in respectively two zoom lens on two infrared CCD cameras, and be installed in respectively the filter glass on the zoom lens.Two two infrared CCD cameras after combination is finished are used for obtaining the flame image information under the different-waveband.
Embodiment three
The embodiment of the present application provides mechanical protection case external structure synoptic diagram and mechanical protection case internal plane, respectively as shown in Figure 3 and Figure 4.
The mechanical protection case external structure synoptic diagram that Fig. 3 provides for the embodiment of the present application three.
As shown in Figure 3, the external structure of the mechanical protection case that the embodiment of the present application provides comprises: form 1(1), form 2(2), hide dust hood (3) and snap close (4) is installed.
Wherein: form 1(1) and form 2(2) be separately positioned on before the zoom lens of two two infrared CCD cameras, make two two infrared CCD cameras under the protection of mechanical protection case, can see through respectively form 1(1) and form 2(2) photograph the converter mouth flamew graphic information; Hide dust hood (3) and be arranged on mechanical protection case top, can play to the mechanical protection case effect of protection, can also make simultaneously and prevent that dust from dropping on the mechanical protection case; Snap close (4) is installed is arranged between mechanical protection case and the screening dust hood, be used for to hide dust hood and be fixed on the mechanical protection case.
In addition, in the embodiment of the present application, the mechanical protection case adopts aluminum alloy material, can alleviate the weight of mechanical protection case, so that the mechanical protection case is lighter.
The mechanical protection case internal plane that Fig. 4 provides for the embodiment of the present application three.
As shown in Figure 4, the disclosed mechanical protection case of the embodiment of the present application internal plane comprises: wire hole 1, wire hole 2 is used for installing the supporting plate 3 of camera adjustments structure, camera lens blow device 4 and trip bolt 5.
Wherein: wire hole 1, wire hole 2 are used for respectively drawing the signal transmission line of two two infrared CCD cameras, wire hole 1 all is connected with image processing module with the signal transmission line that wire hole 2 is drawn, and processes thereby the flame image information that two two infrared CCD cameras shootings are obtained all sends to image processing module through signal transmission line.
Supporting plate 3 is positioned at the medium position of mechanical protection case, is mainly used to install the camera adjustments structure.As shown in Figure 5, trip bolt 5 is 8 screws on the supporting plate 3.Wherein: the Main Function of peripheral 4 screws is that supporting plate 3 is fixed on the mechanical protection case, and the Main Function of 4 screws of inner lane is that the camera adjustments structure is installed on the supporting plate 3.The Main Function of camera adjustments structure is the elevation angle and the visual angle, the left and right sides that can regulate simultaneously two two infrared CCD cameras, the picture that guarantees two two infrared CCD collected by cameras has the overlap ratio 98% or more, thereby the flame image information that guarantees two pairs of infrared CCD collected by cameras has consistence.
The Main Function of camera lens blow device 4 is that the dust to the form surface purges, the cleaning form.Can also be provided with the temperature control equipment that the temperature in the mechanical protection case is regulated in the mechanical protection case simultaneously.Here thermostatic function is finished by the camera lens blow device; when camera lens blow device 4 purges at the dust to the form surface; provide cold wind, thus this camera lens blow device the cleaning form process in, the temperature that can regulate the mechanical protection case.
By above technical scheme as seen, the mechanical protection case external structure synoptic diagram that the embodiment of the present application provides and mechanical protection case internal plane can represent the structure of mechanical protection case more clearly.The mechanical protection case that the embodiment of the present application provides comprises: form, screening dust hood, installation snap close, camera adjustments structure and camera lens blow device.Wherein form can make two two infrared CCD cameras under the protection of mechanical protection case, sees through form and photographs the converter mouth flamew graphic information; Snap close is installed can well be fixed on the mechanical protection case hiding dust hood, at the mechanical protection case screening dust hood is installed simultaneously and can be prevented that dust from dropping on the mechanical protection case; The camera adjustments structure can be regulated the elevation angle and the visual angle, the left and right sides of two CCD cameras simultaneously, and the picture of two CCD collected by cameras of assurance has the overlap ratio more than 98%, thereby the flame image information that guarantees two two infrared CCD collected by cameras has consistence.The camera lens blow device is used for the dust on form surface is purged, again because this camera lens blow device provides cold wind, so the camera lens blow device has also played the effect that the temperature of the box house of mechanical protection case is regulated simultaneously.
Embodiment four
The detailed construction synoptic diagram of a kind of converter flame temperature detection system that Fig. 5 provides for the embodiment of the present application four.
As shown in Figure 5, the embodiment of the present application is on the basis of embodiment one image processing module have been carried out refinement, the converter flame temperature detection system that the embodiment of the present application provides comprises: image capture module 1, and image processing module 2 and computing module 3, and three modules are connected successively.Wherein: image processing module 2 comprises: storage unit 21, noise filtering unit 22 and cutting unit 23.
The Main Function of image capture module 1 is to obtain the converter mouth flamew graphic information, then with the flame image information output that obtains.Here the flame image information of output can be numerary signal.
The input terminus of storage unit 21 is connected with the output terminal of image capture module 1, and storage unit 21 receives the flame image information of image capture module 1 output, and the flame image information that receives is preserved.The input terminus of noise filtering unit 22 is connected with the output terminal of storage unit 21, noise filtering unit 22 receives the flame image information of storage unit 21 outputs, and the flame image information that receives is carried out noise filtering, to obtain more clearly flame image information.The input terminus of cutting unit 23 is connected with the output terminal of noise filtering unit 22, and cutting unit 23 receives the flame image information of noise filtering unit 22 outputs, and the flame image information that receives is carried out image segmentation, to obtain flame image
The input terminus of computing module 3 is connected with the output terminal of cutting unit 23, computing module 3 is used for receiving the flame image of cutting unit 23 outputs, and radiation spectrum and object temperature according to object exist nonlinear relation to calculate the temperature value of each pixel in the described flame image, then obtain the flame temperature of converter mouth according to the temperature value of described each pixel.
By above technical scheme as seen, the converter flame temperature detection system that the embodiment of the present application provides mainly comprises image capture module, image processing module and computing module.The internal structure of image processing module is provided simultaneously, has comprised storage unit, noise filtering unit and cutting unit.In testing process, the flame image information exchange can obtain clearly flame image after crossing storage unit, noise filtering unit and cutting unit, so that computing module utilizes flame image to calculate the flame temperature of converter mouth.Thereby so that the application in testing process, has not only solved the problem that prior art can not detect the converter mouth flamew temperature continuously, and further improved the accuracy of detected result
Embodiment five
The embodiment of the present application provides a kind of noise filtering method, relates generally to the mode of operation of noise filtering unit in the image processing module of mentioning among the embodiment four.
Flame image information often is subject to the noise jamming of various noisemakers in gatherer process, these noise jamming usually show as some isolated pixels on image, and above-mentioned isolated pixel point can bring impact to later image segmentation, analysis and judgement as without filtering process.Particularly, can adopt the method for linear filtering to process to the image that is subject to noise jamming, but the method for a lot of linear filterings has the low general character, when denoising disturbs also so that edge blurry.
So in the embodiment of the present application, for fear of the problems referred to above, adopt a kind of nonlinear filtering method to remove noise.Particularly, adopt the method for medium filtering, it can when realizing removing noise, protect again the edge of image.The realization principle of above-mentioned medium filtering is that the Mesophyticum of the gray-scale value of a certain pixel in the image with each grey scale pixel value in a zone of this pixel replaced, and above-mentioned intermediate value is defined as follows:
If numerical value X1, X2, its ordering of X3...Xn are as follows: Xi1≤Xi2≤Xi3≤...≤Xin, then
Wherein, m is positive natural number, and M is the intermediate value of X1, X2, X3...Xn, and if any a sequence (10,20,30,40,50,60,70), then intermediate value is 40.
By above technical scheme as seen, the noise filtering method that the embodiment of the present application provides mainly is to adopt a kind of nonlinear filtering method filtering noise.Particularly, the method for sample median filtering is namely replaced the Mesophyticum of the gray-scale value of a certain pixel in the image with each grey scale pixel value in a zone of this pixel.By this median filter method, can so that when realizing removing noise, can protect the edge of image, so that the results such as later image segmentation, analysis and judgement are more accurate.
Embodiment six
The embodiment of the present application provides a kind of thresholding method, relates generally to the mode of operation of cutting unit in the image processing module of mentioning among the embodiment four.
In the embodiment of the present application, to the concrete employing of the image segmentation in the flame image information is thresholding method.Above-mentioned thresholding method is a kind of simple cutting techniques based on the zone, it utilizes the difference of target and background on gamma characteristic that will extract in the image, image is considered as having the combination in two class zones of different grey-scale, choose a suitable threshold value, to determine that each pixel belongs to target or belongs to background in the image.The detailed process of aforesaid method is: at first determine a gray threshold T who is in the image gray levels scope; Then with the gray-scale value of each pixel in the image and this threshold value T relatively, whether surpass threshold value T according to above-mentioned gray-scale value and image segmentation is become greater than the pixel group (target) of threshold value T with less than pixel group two portions of threshold value T (background).If input picture is F(x, y), output image is B(x, y), then the aforesaid method available functions is expressed as:
Flame image information after thresholding method will be processed through noise filtering is carried out the image segmentation processing, obtains flame image, so that computing module utilizes flame image that the converter mouth flamew temperature is calculated later on.
When the converter mouth flamew that Fig. 6 provides for the embodiment of the present application six is strong, the effect contrast figure of flame image information before and after dividing processing.
This figure represents is converter mouth flamew when strong, the effect contrast figure of flame image information before and after dividing processing.This figure transverse and longitudinal coordinate represents the size of captured picture, and the resolving power of camera is 480*640, and coordinate has surplus.
In the time of a little less than the converter mouth flamew that Fig. 7 provides for the embodiment of the present application six, the effect contrast figure of flame image information before and after dividing processing.
This figure represents is converter mouth flamew when weak, the effect contrast figure of flame image information before and after dividing processing, and this figure transverse and longitudinal coordinate represents the size of captured picture, and the resolving power of camera is 480*640, and coordinate has surplus.
By above-mentioned Fig. 7 and Fig. 8 as can be known, no matter converter mouth flamew intensity is large or little, above-mentioned division processing method can be partitioned into needed flame image accurately from flame image information.
By above technical scheme as seen, the thresholding method that the embodiment of the present application provides, mainly be to utilize the difference of target and background on gamma characteristic that to extract in the image, image is considered as having the combination in two class zones of different grey-scale, choose a suitable threshold value, to determine that each pixel belongs to target or belongs to background in the image.No matter converter mouth flamew intensity is large or little, above-mentioned division processing method can be partitioned into needed flame image accurately from flame image information, so that computing module utilizes flame image that the converter mouth flamew temperature is calculated later on.
Embodiment seven
The embodiment of the present application provides a kind of converter mouth flamew temperature computation method, relates generally to computing module among the embodiment one calculates the converter mouth flamew temperature by flame image concrete grammar.
The input terminus of computing module is connected with the output terminal of image processing module, receives the flame image of image processing module output.And will calculate from the flame image that image processing module receives the converter mouth flamew temperature, its computation process is as follows:
At first, computing module exists nonlinear relation to calculate the temperature value of each pixel in the flame image according to radiation spectrum and the object temperature of object.
Because in the situation of high frequency low temperature, Planck blackbody radiation theorem can be approximate by the Wien theorem.So the radiation power of black matrix is:
Wherein, C1 represents first radiation constant, C1=3.7418 * 10-16Wm2;
C2 represents second radiation constant, C2=1.4388 * 10-2m.
According to formula (1), under certain specific wavelength, the monochromatic irradiation degree is:
Wherein, ε
λThe expression monochromatic emissivity.
Because black matrix monochromatic emissivity under different wave length is all identical, if then in wavelength X
1And λ
2Record down the monochromatic irradiation degree of same point
With
And with above-mentioned
With
Bring formula (2) into, can be according to above-mentioned monochromatic irradiation degree
With
Ratio obtain the temperature T of object:
Obtain by above reasoning, it is as follows to exist nonlinear relation to calculate the formula of the temperature value of each pixel in the described flame image according to the radiation spectrum of object and object temperature:
Computing module is specially according to formula
Calculate the computing module of the temperature value of each pixel in the flame image, wherein:
C2 represents second radiation constant, C2=1.4388 * 10-2m;
E
1, E
2Represent respectively the Energy value that described two infrared cameras (every camera adopts the spectral filter of different infrared bands) collect at different infrared bands;
λ
1, λ
2Represent respectively the corresponding wavelength of described filter glass;
By above-mentioned formula, can obtain the temperature value of each pixel in the flame image.
After computing module exists nonlinear relation to calculate the temperature value of each pixel in the flame image according to the radiation spectrum of object and object temperature, will calculate the converter mouth flamew temperature by the temperature value of resulting each pixel.
The method of flame temperature that temperature value by each pixel calculates converter mouth is as follows: at first be the temperature value addition with each pixel, then the total pixel divided by flame image obtains medial temperature, and this medial temperature is the converter mouth flamew temperature.
By above technical scheme as seen, the method for calculation that the embodiment of the present application provides relate generally to computing module calculates the converter mouth flamew temperature by flame image concrete grammar.The method is detailed has told about computing module and how exists nonlinear relation to calculate the temperature value of each pixel in the flame image according to radiation spectrum and the object temperature of object, and calculates the converter mouth flamew temperature by the temperature value of each pixel.So that the more clear introduction of the application the mode of operation of computing module of converter flame temperature detection system.
Embodiment eight
The one-piece construction sterogram of a kind of converter flame temperature detection system that Fig. 8 provides for the embodiment of the present application eight.
As shown in Figure 8, the one-piece construction sterogram of the converter flame temperature detection system that the embodiment of the present application provides comprises: converter flame information collecting device 1, industrial computer 2, converter mouth flamew 3, signal transmission line 4 and user control interface 5; Converter flame information collecting device 1 comprises: physical construction box 11 and adjusting support 12, for the more clear one-piece construction sterogram that shows this system, the concrete structure of physical construction box does not draw among the figure.The function that being used for of providing in the function of physical construction box and above-described embodiment gathers two two infrared CCD cameras of flame image information and mechanical protection case is identical.
Wherein, physical construction box 11 is installed in to be regulated on the support 12, physical construction box 11 mainly is that converter mouth flamew 3 is carried out the flame image information acquisition, regulating support 12 mainly plays a supporting role to physical construction box 11, can also by adjusting the height of regulating support 12, realize the adjustment to physical construction box 11 height simultaneously.So that physical construction box 11 has better Working environment when gathering flame image information.
The output terminal of two two infrared CCD cameras in the physical construction box 11 is connected by the input terminus of signal transmission line 4 with industrial computer 2, and industrial computer receives the flame image information of two two infrared CCD camera outputs and received flame image information is processed.Industrial computer 2 is identical with the function of above-mentioned image processing module and image calculation module, mainly is the flame image information that receives is carried out pre-treatment and calculated the converter mouth flamew temperature.Wherein industrial computer 2 also comprises user control interface 5, and the user can check the converter mouth flamew temperature by this control interface, can also control industrial computer simultaneously.
In actually operating, the workflow of the converter mouth flamew system for detecting temperature that the embodiment of the present application provides is as follows: at first, carrying out system assembles connects, being about to selected good filter glass is installed on the zoom lens, then zoom lens is installed in respectively on two cameras, then respectively the output signal line of two cameras is connected with industrial computer, regulate simultaneously the elevation angle and the visual angle, the left and right sides of two cameras, the picture of two collected by cameras of assurance has the overlap ratio more than 98%, connects respectively at last the power supply of camera and industrial computer.After system assembles is finished, start the software on the industrial computer, the flame image information that respectively two cameras shootings is obtained carries out noise filtering and image segmentation obtains flame image, then calculate respectively two cameras at λ 1, the temperature corresponding to each brightness value of λ 2 images that wave band gathers, obtain temperature field cloud atlas T, obtain medial temperature t according to temperature field T again, final system judges whether to finish the detection of a heat, then finish to gather flame image information if finish, then do not continue to gather flame image information if finish, and the flame image information calculations fire door flame temperature of passing through to collect.
By above technical scheme as seen; the one-piece construction sterogram of the converter flame temperature detection system that the embodiment of the present application provides; the formalness feature that can represent more intuitively converter flame temperature detection system; comprise: converter flame information collecting device; industrial computer; converter mouth flamew; signal transmission line and user control interface; wherein; converter flame information collecting device comprises: the function that being used for of providing in the physical construction box and regulate support, the function of physical construction box and above-described embodiment gathers two pairs of infrared CCD cameras of flame image information and mechanical protection case is identical.Industrial computer is identical with the computing module function with the image processing module for flame image information being carried out pre-treatment and calculating that above-described embodiment provides.The one-piece construction sterogram of this converter flame temperature detection system at first gathers the flame image information of converter mouth flamew temperature by converter flame information collecting device, then by signal transmission line the flame image information that collects is sent to industrial computer, by industrial computer the flame image information that receives is carried out pre-treatment and calculating, obtain the converter mouth flamew temperature.Industrial computer also comprises user control interface simultaneously, makes the user check the converter mouth flamew temperature by this interface, and can control industrial computer.
Embodiment nine
The hygrogram of converter mouth flamew within certain period that the converter mouth flamew system for detecting temperature that Fig. 9 provides for the embodiment of the present application nine is measured.
Shown in this figure, X-coordinate is the time, and ordinate zou is the flame temperature of converter mouth.
Smelting the 5th minute and the 7th minute, because the casings in twice operation is arranged, reduction has by a relatively large margin all appearred in the temperature curve of surveying; 8-9 minute because the frequent lifting petticoat pipe of operative employee, cause temperature curve that certain fluctuation is arranged; Blowing latter stage, the curve ascendant trend tends towards stability; When near terminal point, fire door flame dies down, and temperature begins to descend, and at this moment the actual flame temperature that records descends too.As shown in Figure 9, the terminal point flame temperature is 1730 ℃, and the thermopair measured temperature is 1724 ℃.The measured terminal point flame temperature error of the terminal point flame temperature that this converter mouth flamew system for detecting temperature is measured and thermopair is 6 ℃, in the error allowed band.Hence one can see that, and this converter mouth flamew system for detecting temperature reaches steel mill's service requirements.
By above technical scheme as seen, the hygrogram of converter mouth flamew within certain period that the converter flame temperature detection system that the embodiment of the present application provides is measured, represented more intuitively the detection case of converter flame temperature detection system to the converter mouth flamew temperature, will scheme measured temperature and practical situation simultaneously and compare.As: when feeding in raw material operation, the converter mouth flamew temperature can descend to some extent; During the lifting petticoat pipe, also different in the severe degree of fire door and oxygen burning because the height of petticoat pipe causes the flame area of fire door different, so can make the converter mouth flamew temperature cause certain fluctuation.And in conjunction with the converter mouth flamew temperature that the prior art thermopair is measured Fig. 9 is analyzed, the terminal point flame temperature is 1730 ℃ among Fig. 9, and the thermopair measured temperature is 1724 ℃.The measured terminal point flame temperature error of the terminal point flame temperature that this converter mouth flamew system for detecting temperature is measured and thermopair is 6 ℃, in the error allowed band.Confirmed that finally converter mouth flamew system for detecting temperature that the application provides has reached the service requirements of steel mill.The measured fire door flame temperature of the converter mouth flamew temperature that the embodiment of the present application records by the converter mouth flamew system for detecting temperature that the application is provided and prior art is compared, in conjunction with practical situation the impact that flame temperature causes is analyzed simultaneously, the converter flame temperature detection system that drawing the application provides has reached the conclusion of steel mill's service requirements.Comprehensive like this analysis is so that resulting conclusion is more convincing.
Each embodiment in this specification sheets all adopts the mode of going forward one by one to describe, and identical similar part is mutually referring to getting final product between each embodiment, and each embodiment stresses is difference with other embodiment.
Only be the application's preferred implementation below, make those skilled in the art can understand or realize the application.Multiple modification to these embodiment will be apparent to one skilled in the art, and General Principle as defined herein can in the situation of the spirit or scope that do not break away from the application, realize in other embodiments.Therefore, the application will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a converter flame temperature detection system is characterized in that, comprising:
Be used for obtaining the image capture module of converter mouth flamew graphic information;
Be connected with described image capture module, be used for described flame image information is carried out pre-treatment, obtain the image processing module of flame image;
Be connected with described image processing module, be used for existing nonlinear relation to calculate the temperature value of described each pixel of flame image according to radiation spectrum and the object temperature of object, and obtain the computing module of the flame temperature of converter mouth according to the temperature value of described each pixel.
2. system according to claim 1 is characterized in that, described image capture module comprises: two two infrared CCD cameras, zoom lens and filter glass, wherein:
Be respectively arranged with zoom lens on described two two infrared CCD cameras;
Be respectively arranged with filter glass on the described zoom lens.
3. system according to claim 2 is characterized in that, described filter glass is the bandpass filter of infrared band, and wavelength region is at 1100nm-2500nm, and bandwidth is 10nm.
4. system according to claim 1 is characterized in that, described image processing module comprises: be used for receiving the flame image information that described image capture module sends, and the storage unit that this information is preserved;
Be connected with described storage unit, be used for the flame image information of described storage unit is carried out the noise filtering unit of noise filtering;
Be connected with described noise filtering unit, be used for the flame image information behind the described noise filtering is carried out image segmentation, obtain the cutting unit of flame image.
5. system according to claim 1 and 2; it is characterized in that; described image capture module also comprises: be provided with the form that gathers flame image information for image capture module on the outer wall, and the inner mechanical protection case that is provided with the space that can hold described filter glass, described zoom lens and described two two infrared CCD cameras.
6. system according to claim 5 is characterized in that, described image capture module also comprises: be installed in the described mechanical protection case, be used for the camera lens blow device that the surface dirt to the form of described mechanical protection case purges.
7. system according to claim 5 is characterized in that, is provided with inlet mouth and air outlet at the outer wall of described mechanical protection case;
This device also comprises: be installed in the described mechanical protection case and be positioned at described inlet mouth place, be used for described mechanical protection case is carried out thermoregulator temperature control equipment.
8. system according to claim 5; it is characterized in that; described mechanical protection case also comprises: be used for regulating simultaneously the elevation angle and the visual angle, the left and right sides of described two two infrared CCD cameras, guarantee that the picture of described two two infrared CCD collected by cameras has the camera adjustments structure of 98% above overlap ratio.
9. system according to claim 5 is characterized in that, also comprises: be arranged on described mechanical protection case top, be used for preventing that dust from dropping on the screening dust hood on the described mechanical protection case.
10. system according to claim 9 is characterized in that, also comprises: for the installation snap close that described screening dust hood is fixed on the described mechanical protection case.
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| CN201220413260.8U CN202865254U (en) | 2012-08-20 | 2012-08-20 | Converter flame temperature detection system |
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| CN108194942A (en) * | 2017-12-15 | 2018-06-22 | 中国大唐集团科学技术研究院有限公司火力发电技术研究所 | A kind of method for controlling flame temperature |
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