CN106153553B - The online Real-time and Dynamic Detection system of converter steel-smelting molten steel carbon content - Google Patents
The online Real-time and Dynamic Detection system of converter steel-smelting molten steel carbon content Download PDFInfo
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- CN106153553B CN106153553B CN201510171150.3A CN201510171150A CN106153553B CN 106153553 B CN106153553 B CN 106153553B CN 201510171150 A CN201510171150 A CN 201510171150A CN 106153553 B CN106153553 B CN 106153553B
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Abstract
The present invention provides a kind of online Real-time and Dynamic Detection system of converter steel-smelting molten steel carbon content, it include: telescope optical system, for acquiring the flame image information of steel-making fire door in real time, the system includes the object lens and eyepiece of common optical axis, carries out imaging to fire door flame by the object lens and eyepiece and is transmitted by optical fiber；Spectrometer receives flame image information and carries out flame spectrometry；Terminal point control device, the spectral distribution information for receiving spectrometer transmission carry out the detection of carbon content；Aforementioned optical imaging system further includes a polarizing film, is arranged in the optical imagery access of the object lens and eyepiece.Carbon content detection system proposed by the invention, influence of the complicated steel-making environment to flame detecting can be overcome, strong antijamming capability, and the polarization state difference of the flame light generated for different steel-making environment, pass through the polarizing film of setting, for enhancing the acquisition of fire door flame, so that the acquisition and detection of flame spectrum information are relatively reliable, stability is more preferable.
Description
Technical field
Various aspects of the invention are related to carbon content of molten steel in converter steeling technology field, especially convertor steelmaking process
Real-time monitoring, in particular to the online Real-time and Dynamic Detection system of converter steel-smelting molten steel carbon content.
Background technique
Mainstream steel-smelting technology in the world is exactly pneumatic steelmaking now, and yield accounts for 70% or more of steel total output.And
A most important ring is exactly the terminal point control in latter stage in convertor steelmaking process, the quality of direct relation molten steel to the end.Since
Since converter steel making method occurs, the terminal point control of pneumatic steelmaking mainly experienced artificial experience control, static model control, move
States model control and optical information control four developing stage.
Artificial experience control, i.e. experience are made steel, and determine carbon using thermocouple temperature measurement and stokehold samples the means quickly analyzed, right
Converter terminal under normal blowing condition carries out artificial experience judgement control.Reaction between carbon and oxygen rate is the important of divided into three stages
Foundation, and the temperature of the severe degree of reaction between carbon and oxygen and molten steel can be reflected by fire door flame.Steel making operation worker is logical
It crosses observation fire door flame, spark and oxygen supply time and carrys out comprehensive descision steel-making terminal.However, relying solely on the sight of operative employee's human eye
Examine, there are Target hit rates it is low, labor intensity of workers is big the problems such as.
Static model control is exactly to carry out statistical to the primary data bessemerized in the past according to statistical principle
Analysis calculates primary condition required for blowing, carries out converting process with this condition.In general, static model control phase
Than artificial experience control quantitative calculating and control more efficiently can be carried out using the primary condition of converting process.Static models
Control can find optimum material proportion according to material condition, and determine smelting scheme according to practical ingredient, overcome experience control
On randomness and inconsistency.Existing static models include mechanism model, statistical model and three kinds of incremental model.And in reality
In the application of border, usually combine to improve the precision of terminal point control with these three models.But not due to static model control
Consider the multidate information in converting process, not can be carried out online tracking and amendment in real time, therefore accuracy is very restricted.
Model controlling is mainly sublance dynamic control method, using sublance in converter on the basis of static models
Molten steel detected, according to detection obtain as a result, being corrected to initial parameter, to obtain accurate terminal.Especially
In recent years, the application with the research of artificial neural network in model controlling method overcomes traditional static model control
System ignores the problem of multidate information in converting process, further improves the accuracy of detection, makes the hit of end point determination result
Rate is further improved, while the degree of automation of steel-making being made to be greatly improved.But its cost is relatively high,
It needs to be transformed converter, therefore general mini-medium BOF plants is less applicable in.
Conventional method is limited to endpoint inaccuracy or cost high-adaptability, therefore with the development of steel-smelting technology
With the progress of the relevant technologies, people are continuously attempted in terminal point control technology using more efficient and accurate method.In 20 generation
It records the eighties, the novel end-point control method judged using converter mouth optical information BOF Steelmaking Endpoint occurs.Such as,
The situation of change occurred when penetrating furnace gas using infrared laser is come the optical detector that measures composition of fumes to judge terminal, the spy
It surveys device and judges terminal by detecting the situation of change occurred across furnace gas laser, cardinal principle is the oxygen detected in furnace gas
The content for changing carbon, carries out terminal point control according to the composition transfer of the carbon monoxide in furnace gas.In experience or dynamic model control
In system, what be can not ignore always is exactly that operator will obtain different degrees of information from the variation of flame, these information its
Reality is exactly the image information of the aperture of flame, spatial distribution and flame.With the continuous development of photoelectric device, optical processing method
Continuous maturation, optical detector technology obtained great development, and optical control method has been also applied to the terminal of pneumatic steelmaking
In control.Such as the molten steel radiation spectral information probe method of Zhang Jinjin, Shi Yanjie et al. proposition, Bethlehem Steel Company, the U.S. mention
The flame image information detection method etc. that fire door flame intensity signal probe method out, Wei Chengye, Yan Jianhua et al. propose.
Although the research of steel-making terminal point control theory deepens continuously, cost needed for these methods is high, detects and divides
The cost of desorption device is all extremely expensive, and installation and maintenance are inconvenient, only in some powerful steels enterprises
It is applied in industry.In most of medium or small sized steel companies, or based on single experience control or static model control.And most
Although new optical information control method provides some valuable thinkings and application direction, but due to by production scale, life
The limitation of production condition, especially complicated, severe STEELMAKING PRODUCTION environment, in terms of optical information acquisition, anti-interference ability is weak, cannot
It is continuous rapidly to extract required parameter information, thus be difficult to some medium or small sized steel companies and received.
Therefore, a kind of accurate there is an urgent need to develop, it is suitable for medium or small sized steel company, the online real-time steel-making of middle primary converter
Terminal point control scheme.
Summary of the invention
It is an object of that present invention to provide a kind of online Real-time and Dynamic Detection systems of converter steel-smelting molten steel carbon content, have non-connect
Touching, strong antijamming capability, it is easily operated the advantages that, thus in terms of solving current pneumatic steelmaking carbon content dynamic on-line monitoring
Problem.
Above-mentioned purpose of the invention realizes that dependent claims are to select else or have by the technical characteristic of independent claims
The mode of benefit develops the technical characteristic of independent claims.
To reach above-mentioned purpose, the present invention proposes a kind of online Real-time and Dynamic Detection system of converter steel-smelting molten steel carbon content,
The detection system includes:
Telescope optical system is configured for acquiring the flame image information of steel-making fire door, the telescope optical system in real time
Object lens and eyepiece including common optical axis are imaged the flame of steel-making fire door by the object lens and eyepiece；
Spectrometer is configured to be connected to the telescope optical system by the optical fiber, receives from the optics of looking in the distance
The flame image information of system carries out flame spectrometry；
Terminal point control device is connect by data line with the spectrometer, and the spectral distribution information of spectrometer transmission is received
Carry out the detection of carbon content；
Wherein:
The telescope optical system further includes a polarizing film, is arranged in the optical imagery access of the object lens and eyepiece.
In further embodiment, the polarizing film is arranged the rear of the eyepiece, and be located at the optical fiber and eyepiece it
Between.
In further embodiment, the polarizing film is arranged between the object lens and eyepiece.
In further embodiment, the front of the object lens is arranged in the polarizing film.
In further embodiment, the polarizing film is dyestuff system polaroid.
In further embodiment, the telescope optical system is also independently from object lens and eyepiece, for adjusting fire door
The field stop of flame detecting visual field, field stop configuration are formed by optical imagery access in the object lens, eyepiece.
In further embodiment, the field stop is located on the focal plane of the object lens.
In further embodiment, the field stop is located at the rear of eyepiece and close to the position of the optical fiber.
In further embodiment, the field stop is variable field of view light bar.
In further embodiment, the terminal point control device has one to be used to carry out carbon content according to spectral distribution information
The arithmetic element of detection and the central control unit of control arithmetic element operation, the central control unit are connect with arithmetic element,
The arithmetic element there is data-interface to connect with the spectrometer to receive the spectral distribution information.
In further embodiment, the arithmetic element includes one of fpga chip, CPLD chip, these FPGA
Burning is used to carry out the model of carbon content detection in chip, CPLD chip, and the central control unit includes a microprocessor.
It should be appreciated that as long as the design and all combinations additionally conceived described in greater detail below are at this
It can be viewed as a part of the subject matter of the disclosure in the case that the design of sample is not conflicting.In addition, required guarantor
All combinations of the theme of shield are considered as a part of the subject matter of the disclosure.
Can be more fully appreciated from the following description in conjunction with attached drawing present invention teach that described in and it is other aspects, real
Apply example and feature.The features and/or benefits of other additional aspects such as illustrative embodiments of the invention will be below
Description in it is obvious, or learnt in practice by the specific embodiment instructed according to the present invention.
Detailed description of the invention
Attached drawing is not intended to drawn to scale.In the accompanying drawings, identical or nearly identical group each of is shown in each figure
It can be indicated by the same numeral at part.For clarity, in each figure, not each component part is labeled.
Now, example will be passed through and the embodiments of various aspects of the invention is described in reference to the drawings, in which:
Fig. 1 is the schematic diagram of the online Real-time and Dynamic Detection system of converter steel-smelting molten steel carbon content proposed by the invention.
Fig. 2 is the schematic diagram of terminal point control device in the detection system of Fig. 1.
Fig. 3 is the schematic diagram of an embodiment of telescope optical system in the detection system of Fig. 1.
Fig. 4 is the schematic diagram of another embodiment of telescope optical system in the detection system of Fig. 1.
Specific embodiment
In order to better understand the technical content of the present invention, special to lift specific embodiment and institute's accompanying drawings is cooperated to be described as follows.
Various aspects with reference to the accompanying drawings to describe the present invention in the disclosure, shown in the drawings of the embodiment of many explanations.
It is not intended to cover all aspects of the invention for embodiment of the disclosure.It should be appreciated that a variety of designs and reality presented hereinbefore
Those of apply example, and describe in more detail below design and embodiment can in many ways in any one come it is real
It applies, this is because conception and embodiment disclosed in this invention are not limited to any embodiment.In addition, disclosed by the invention one
A little aspects can be used alone, or otherwise any appropriately combined use with disclosed by the invention.
As shown in connection with fig. 1, the online Real-time and Dynamic Detection system of converter steel-smelting molten steel carbon content proposed by the present invention, including hope
Remote optical system 1, spectrometer 2 and terminal point control device 3.
It is connected between telescope optical system 1 and spectrometer 2 by optical fiber 4.
Telescope optical system 1 is configured for acquiring the flame image information of steel-making fire door in real time.
Spectrometer 2, as shown in Figure 1, be configured to receive the flame image information from telescope optical system 1 by optical fiber 4,
And spectrum analysis is carried out to obtain flame spectrum distributed intelligence.
Spectrometer 2, has selected grating spectrograph in this example, and the USB4000-VIS-NIR's of such as marine optics is miniature
CCD grating spectrograph, small in size, failure rate is low and easy for installation, the telescope optical system cooperation with this example design can stablize
Obtain the stable spectra of fire door flame.
Terminal point control device 3 is connect by data line with the spectrometer 2, and the spatial distribution letter that spectrometer 2 transmits is received
Breath carries out the detection of carbon content.
In conjunction with Fig. 1, the terminal point control device 3 has the fortune for being used to carry out carbon content detection according to spectral distribution information
It calculates unit 31 and controls the central control unit 32 of arithmetic element operation, which connect with arithmetic element 31,
The arithmetic element there is data-interface to connect with aforementioned spectral instrument 2 to receive the spectral distribution information.
In this example, terminal point control device 3 is configured to a circuit board.Example as shown in Figure 2 is integrated with work on circuit board
Fpga chip for arithmetic element and the microprocessor as central processing unit further include certainly, on circuit board for providing
Power module, serial line interface, the RS232 interface etc. of burning voltage supply.
Alternatively, the arithmetic element 31 includes one of fpga chip, CPLD chip, these FPGA
Burning is used to carry out the model of carbon content detection in chip, CPLD chip.Using arithmetic element, flame spectrum information is being received
Carry out the detection of carbon content automatically afterwards.
In the detection system that the disclosure is proposed, the model can use existing SVM detection model, and the present invention is simultaneously
Detection model is not made and changes or improves, these models can for example be consolidated as mature detection mode by burning technology
Change into fpga chip or CPLD chip, to receive the control of premise central control unit 32 and receive flame spectrum
Automatically the detection of carbon content is carried out after information.
These models, such as in the pertinent literature of the end-point control method for the fire door flame that Xu Lingfei et al. is proposed
There is detailed realization, can directly quote in the present invention to realize, details are not described herein.
The central control unit 32 includes a microprocessor, single-chip microcontroller etc..
Referring to figs 1 and 3, in the detection system of the disclosure, the object lens of the telescope optical system 1 including common optical axis,
Eyepiece is imaged the flame of aforementioned steel-making fire door by the object lens and eyepiece.
As optional example, the object lens are air-spaced doublet, by one piece of positive lens and one piece of negative lens common optical axis
It is distributed and constitutes.
The eyepiece is Kellner eyepiece, is made of the distribution of one piece of simple lens and one piece of cemented doublet common optical axis.
As shown in Figure 1, the telescope optical system 1 of this example further includes a polarizing film, the optics of the object lens and eyepiece is set
In imaging path.
Preferably, the rear of the eyepiece is arranged in the polarizing film, and between the optical fiber and eyepiece.More into one
Step ground, the polarizing film are more nearly optical fiber 4 above-mentioned, to enhance flame image acquisition.
In other example, the polarizing film can also be arranged between the object lens and eyepiece.
In more other example, the front of the object lens is arranged in the polarizing film, certainly such setting will so that
The design cost and difficulty of polarizing film increase.
In order to adapt to the severe site environment of complexity of steel mill, polarizing film above-mentioned preferably uses dyestuff system resistant to high temperature inclined
The dyestuff system polaroid of mating plate, such as Bo La company, Japan production.
Since the steel-making environment of different steel mills is different, the polarization state of generated flame light is different, therefore of the invention
Flame acquisition can be enhanced after selecting polarizing film in scheme, so that the acquisition and detection of flame spectrum information are relatively reliable, surely
It is qualitative more preferable.
In conjunction with Fig. 4, in the detection system of the disclosure, in preferred example, telescope optical system 1 may also include one solely
Object lens and eyepiece, field stop for adjusting fire door flame detecting visual field are stood on, which configures in object lens, eyepiece
It is formed by optical imagery access, for adjusting the detection viewing field of fire door flame.
Preferably, the field stop is located on the focal plane of the object lens.
In other example, the field stop can also be arranged in the rear of eyepiece and close to the optical fiber
Position.
Preferably, the field stop is variable field of view light bar.
In Fig. 3, f1' indicate object lens focal length, f2' indicate eyepiece focal length.
In Fig. 4, label l indicates the optical axis of object lens, eyepiece, f1' indicate object lens focal length, f2' indicate eyepiece focal length.
In conjunction with shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, technology contents according to the above disclosure, in detection system proposed by the invention
Different for the steel-making environment of different steel mills in system, the polarization state of generated flame light is different, so in telescope optical system
In be provided with a polarizing film, for enhance fire door flame acquisition so that flame spectrum information acquisition and detection more
Reliably, stability is more preferable.Moreover, being also provided with one for adjusting fire door flame detecting visual field in further scheme
Field stop, more preferably variable field of view light bar certainly, so that entire detection system is adapted to a variety of different steel-making
Ambient scene, in particular for the flame detecting of different distance, the flame detecting of different size converter and to the lid of fire door
Son, which is moved up and down, influences (converter of such as Ma Gang) to flame detecting bring, has great convenience, does not need redesign one
Optical system is covered to carry out imaging of looking in the distance, only needs adaptively to adjust field stop using the solution of the present invention, is improved
The adaptability of whole system, and predictably, production can be significantly reduced using the sets of plan or existing steel mill is (outstanding
It is medium and small steel mill) using the cost of the system, easy for installation, the simple debugging in scene can come into operation.
Although the present invention has been disclosed as a preferred embodiment, however, it is not to limit the invention.Skill belonging to the present invention
Has usually intellectual in art field, without departing from the spirit and scope of the present invention, when can be used for a variety of modifications and variations.Cause
This, the scope of protection of the present invention is defined by those of the claims.
Claims (9)
1. a kind of online Real-time and Dynamic Detection system of converter steel-smelting molten steel carbon content, which is characterized in that the detection system includes:
Telescope optical system is configured for acquiring the flame image information of steel-making fire door in real time, which includes
The object lens and eyepiece of common optical axis are imaged the flame of steel-making fire door by the object lens and eyepiece；
Spectrometer is configured to be connected to the telescope optical system by optical fiber, receives the fire from the telescope optical system
Flame image information carries out flame spectrometry；
Terminal point control device is connect by data line with the spectrometer, and the spectral distribution information for receiving spectrometer transmission carries out
The detection of carbon content；
Wherein:
The telescope optical system further includes a polarizing film, is arranged in the optical imagery access of the object lens and eyepiece；
The rear of the eyepiece is arranged in the polarizing film, and between the optical fiber and eyepiece.
2. the online Real-time and Dynamic Detection system of converter steel-smelting molten steel carbon content according to claim 1, which is characterized in that institute
Polarizing film is stated to be arranged between the object lens and eyepiece.
3. the online Real-time and Dynamic Detection system of converter steel-smelting molten steel carbon content according to claim 1, which is characterized in that institute
State the front that the object lens are arranged in polarizing film.
4. the online Real-time and Dynamic Detection system of converter steel-smelting molten steel carbon content according to claim 1,2 or 3, feature exist
In the polarizing film is dyestuff system polaroid.
5. the online Real-time and Dynamic Detection system of converter steel-smelting molten steel carbon content according to claim 1,2 or 3, feature exist
In, the telescope optical system is also independently from object lens and eyepiece, the field stop for adjusting fire door flame detecting visual field,
Field stop configuration is formed by optical imagery access in the object lens, eyepiece.
6. the online Real-time and Dynamic Detection system of converter steel-smelting molten steel carbon content according to claim 5, which is characterized in that institute
Field stop is stated to be located on the focal plane of the object lens.
7. the online Real-time and Dynamic Detection system of converter steel-smelting molten steel carbon content according to claim 5, which is characterized in that institute
It states field stop and is located at the rear of eyepiece and close to the position of the optical fiber.
8. the online Real-time and Dynamic Detection system of converter steel-smelting molten steel carbon content according to claim 5, which is characterized in that institute
Stating field stop is variable field of view light bar.
9. the online Real-time and Dynamic Detection system of converter steel-smelting molten steel carbon content according to claim 1, which is characterized in that institute
Terminal point control device is stated with one for carrying out the arithmetic element and control operation list of carbon content detection according to spectral distribution information
The central control unit of member operation, the central control unit are connect with arithmetic element, which has data-interface and institute
Spectrometer connection is stated to receive the spectral distribution information.
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| CN113106191A (en) * | 2021-05-21 | 2021-07-13 | 广西金智信息科技有限公司 | Intelligent fire watching device for steelmaking converter based on image recognition |
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