CN109813433A - The continuous temperature measurement method of LF refining furnace liquid steel temperature - Google Patents
The continuous temperature measurement method of LF refining furnace liquid steel temperature Download PDFInfo
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- CN109813433A CN109813433A CN201811460915.5A CN201811460915A CN109813433A CN 109813433 A CN109813433 A CN 109813433A CN 201811460915 A CN201811460915 A CN 201811460915A CN 109813433 A CN109813433 A CN 109813433A
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Abstract
The present invention relates to metallurgical detection technique fields, the continuous temperature measurement method of specifically a kind of LF refining furnace liquid steel temperature, step specific as follows: (1) installing thermal camera outside LF refining furnace above the platform of stokehold, the thermal camera operates indoor computer system with LF refining furnace and connect;(2) outer video camera starts image in continuous acquisition furnace, and image information is transferred to computer system;(3) computer system continuously detects liquid steel temperature first with thermal imaging temperature measurement method.The present invention can be realized the continuous on-line detection to refining liquid liquid steel temperature, compared to the thermometric mode for using temperature-measuring gun at present, can reduce labor intensity, improve safety, shortens the heat and improve controlled level.
Description
Technical field
The present invention relates to metallurgical detection technique fields, specifically the continuous temperature measurement method of LF refining furnace liquid steel temperature.
Background technique
General process for making is required using converter or electro-smelting molten steel, and preliminary melted molten steel also needs
The refining furnaces such as LF, VD or RH are refined, it is therefore an objective to be improved steel quality and be carried out molten steel composition adjustment.LF refining is the most frequently used
A kind of purifier, the main target of the process is exactly to control liquid steel temperature and ingredient, needs repeatedly to examine in refining process
Analysis molten steel composition and temperature are surveyed, and reaches target liquid steel temperature by adjusting power-on time.
Current LF refining technique is typically all to carry out discontinuous thermometric, thermometric process using artificial insertion thermometric galvanic couple
In, the sampling hole of the temperature-measuring gun insertion fire door of galvanic couple temperature probe will be installed, liquid steel temperature extracts temperature-measuring gun after detecting successfully,
General every furnace steel needs thermometric 3-4 time, according to the difference of temperature-measuring results and target temperature, adjust the power-on time of LF, parameter and plus
Material system, to reach suitable liquid steel temperature.Using current thermometric mode, manually installed probe and artificial insertion is needed to survey
The operation such as warm rifle, not only large labor intensity, safety are poor, it is also necessary to consume a large amount of temperature probe, high production cost;Meanwhile
Since this thermometric mode is discontinuous thermometric, a temperature could be surveyed every ten minutes or so, it cannot be to the company of liquid steel temperature
Continuous variation carries out accurate perception, has a certain impact to the temperature control of refining process.
Summary of the invention
In order to solve the problems mentioned above in the background art, the present invention provides the continuous surveys of LF refining furnace liquid steel temperature
Warm method.
A kind of continuous temperature measurement method of LF refining furnace liquid steel temperature, specific as follows:
(1) thermal camera is installed outside LF refining furnace, the thermal camera and LF refining furnace are grasped above the platform of stokehold
Make indoor computer system connection;
(2) after the ladle for being prepared to enter into LF refining furnace, which reaches, sits package location, argon gas pipeline is connected, ladle starts bottom blowing
Argon, LF refining furnace operate the seat package informatin or signal that indoor computer system obtains ladle by network, control infrared take the photograph
Camera starts image in continuous acquisition furnace, and image information is transferred to computer system, when computer system is obtained by network
Take ladle outbound, after the information for refining end, computer system control video camera stops working;
(3) it in refining process, after the image data real-time Transmission of the infrared camera scan is to computer system, calculates
Machine system is distinguished molten steel region and slag zone in furnace, is recycled first with image in the furnace of image processing software identification acquisition
Thermal imaging temperature measurement method continuously detects liquid steel temperature, and in terms of the temperature that will test is shown in the way of data and curve
On calculation machine interface.
Further, the infrared measurement of temperature range of the thermal camera be 400-2000 DEG C, 10-55 ° of the angle of view, phase
Machine focus adjustable.
Further, compressed air blowing cleaner and water cooling plant are installed at the camera lens of the thermal camera, it is described
Compressed air blowing cleaner can prevent pollution of the dust to camera lens;The water cooling plant can the thermal camera carry out it is cold
But;Compressed air blowing cleaner and the water cooling plant keep 24 hours it is normally opened.
Further, the pressure limit of compressed air is 0.1-0.6Mpa in the compressed air blowing cleaner.
Further, the pressure limit of cooling water is 0.2-0.5Mpa in the water cooling plant.
Further, image in step (2) the acquisition furnace, specific method are the camera lens pair using the thermal camera
Quasi- stove gate, bell feed wire hole or electrode hole, by adjusting the angle lens and installation site of thermal camera, allow camera energy
Collect the image of molten steel and steel slag in furnace.
Further, the thermal camera and molten steel identity distance are from 1-12m.
Further, the thermal camera and LF refining furnace operate indoor computer by network mode, USB or
The connection of person's serial mode.
Compared with prior art, the beneficial effects of the present invention are:
(1) have the function of continuously detecting liquid steel temperature in LF furnace, temperature detecting precision ± 0.1 DEG C;
(2) continuous temperature measurement is carried out using thermal imaging temperature measurement method, without consuming temperature probe, testing cost is low, practicable company
Continue online temperature detection;
(3) due to having the temperature function in continuous detection LF furnace, it can be combined with LF refining model, improve LF refining
Temperature control precision and automatic control level.
The present invention feeds wire hole or electrode hole using thermal camera is installed outside LF furnace, by stove gate, bell, directly right
Molten steel is imaged in furnace, when LF argon bottom-blowing gas shock molten steel forms argon gas core, carries out image to the image of acquisition
It handles, the position of Argon region molten steel and clinker in automatic identification furnace, and continuously detects the temperature of molten steel in furnace using thermal image method
Degree, the temperature for LF process control.The present invention can be realized the continuous on-line detection to refining liquid liquid steel temperature, compared to
The thermometric mode for using temperature-measuring gun at present can reduce labor intensity, improve safety, shorten the heat and improve control
It is horizontal.
Specific embodiment
Embodiment 1
A kind of continuous temperature measurement method of LF refining furnace liquid steel temperature, specific as follows:
(1) thermal camera is installed outside LF refining furnace, the thermal camera and LF refining furnace are grasped above the platform of stokehold
Make indoor computer system connection;
(2) after the ladle for being prepared to enter into LF refining furnace, which reaches, sits package location, argon gas pipeline is connected, ladle starts bottom blowing
Argon, LF refining furnace operate the seat package informatin or signal that indoor computer system obtains ladle by network, control infrared take the photograph
Camera starts image in continuous acquisition furnace, and image information is transferred to computer system, when computer system is obtained by network
Take ladle outbound, after the information for refining end, computer system control video camera stops working;
(3) it in refining process, after the image data real-time Transmission of the infrared camera scan is to computer system, calculates
Machine system is distinguished molten steel region and slag zone in furnace, is recycled first with image in the furnace of image processing software identification acquisition
Thermal imaging temperature measurement method continuously detects liquid steel temperature, and in terms of the temperature that will test is shown in the way of data and curve
On calculation machine interface.
Embodiment 2
A kind of continuous temperature measurement method of LF refining furnace liquid steel temperature, specific as follows:
(1) thermal camera is installed outside LF refining furnace, the thermal camera and LF refining furnace are grasped above the platform of stokehold
Make indoor computer system connection;
(2) after the ladle for being prepared to enter into LF refining furnace, which reaches, sits package location, argon gas pipeline is connected, ladle starts bottom blowing
Argon, LF refining furnace operate the seat package informatin or signal that indoor computer system obtains ladle by network, control infrared take the photograph
Camera starts image in continuous acquisition furnace, and image information is transferred to computer system, when computer system is obtained by network
Take ladle outbound, after the information for refining end, computer system control video camera stops working;
(3) it in refining process, after the image data real-time Transmission of the infrared camera scan is to computer system, calculates
Machine system is distinguished molten steel region and slag zone in furnace, is recycled first with image in the furnace of image processing software identification acquisition
Thermal imaging temperature measurement method continuously detects liquid steel temperature, and in terms of the temperature that will test is shown in the way of data and curve
On calculation machine interface.
Further, compressed air blowing cleaner and water cooling plant are installed at the camera lens of the thermal camera, it is described
Compressed air blowing cleaner can prevent pollution of the dust to camera lens;The water cooling plant can the thermal camera carry out it is cold
But;Compressed air blowing cleaner and the water cooling plant keep 24 hours it is normally opened.
Further, the pressure limit of compressed air is 0.1-0.6Mpa in the compressed air blowing cleaner.
Further, the pressure limit of cooling water is 0.2-0.5Mpa in the water cooling plant.
Further, the infrared measurement of temperature range of the thermal camera be 400-2000 DEG C, 10-55 ° of the angle of view, phase
Machine focus adjustable.
Embodiment 3
A kind of continuous temperature measurement method of LF refining furnace liquid steel temperature, specific as follows:
(1) thermal camera is installed outside LF refining furnace, the thermal camera and LF refining furnace are grasped above the platform of stokehold
Make indoor computer system connection;
(2) after the ladle for being prepared to enter into LF refining furnace, which reaches, sits package location, argon gas pipeline is connected, ladle starts bottom blowing
Argon, LF refining furnace operate the seat package informatin or signal that indoor computer system obtains ladle by network, control infrared take the photograph
Camera starts image in continuous acquisition furnace, and image information is transferred to computer system, when computer system is obtained by network
Take ladle outbound, after the information for refining end, computer system control video camera stops working;
(3) it in refining process, after the image data real-time Transmission of the infrared camera scan is to computer system, calculates
Machine system is distinguished molten steel region and slag zone in furnace, is recycled first with image in the furnace of image processing software identification acquisition
Thermal imaging temperature measurement method continuously detects liquid steel temperature, and in terms of the temperature that will test is shown in the way of data and curve
On calculation machine interface.
Further, image in step (2) the acquisition furnace, specific method are the camera lens pair using the thermal camera
Quasi- stove gate, bell feed wire hole or electrode hole, by adjusting the angle lens and installation site of thermal camera, allow camera energy
Collect the image of molten steel and steel slag in furnace.
Further, the thermal camera and molten steel identity distance are from 1-12m.
Further, the thermal camera and LF refining furnace operate indoor computer by network mode, USB or
The connection of person's serial mode.
Claims (8)
1. a kind of continuous temperature measurement method of LF refining furnace liquid steel temperature, which is characterized in that step specific as follows:
(1) thermal camera, the thermal camera and LF refining furnace operating room are installed above the platform of stokehold outside LF refining furnace
Interior computer system connection;
(2) after the ladle for being prepared to enter into LF refining furnace, which reaches, sits package location, argon gas pipeline is connected, ladle starts BOTTOM ARGON BLOWING, LF
Refining furnace operates the seat package informatin or signal that indoor computer system obtains ladle by network, and control thermal camera is opened
Image in beginning continuous acquisition furnace, and image information is transferred to computer system, when computer system obtains ladle by network
Outbound, after the information for refining end, computer system control video camera stops working;
(3) in refining process, after the image data real-time Transmission of the infrared camera scan is to computer system, department of computer science
System distinguishes molten steel region and slag zone in furnace, recycles thermal imagery first with image in the furnace of image processing software identification acquisition
Temp measuring method continuously detects liquid steel temperature, and the temperature that will test is shown in computer in a manner of data and curve
On interface.
2. the continuous temperature measurement method of LF refining furnace liquid steel temperature according to claim 1, it is characterised in that: described infrared to take the photograph
The infrared measurement of temperature range of camera is 400-2000 DEG C, and 10-55 ° of the angle of view, camera focus is adjustable.
3. the continuous temperature measurement method of LF refining furnace liquid steel temperature according to claim 1, it is characterised in that: described infrared to take the photograph
Compressed air blowing cleaner and water cooling plant, the compressed air blowing cleaner and water cooling dress are installed at the camera lens of camera
Set holding 24 hours it is normally opened.
4. the continuous temperature measurement method of LF refining furnace liquid steel temperature according to claim 3, it is characterised in that: the compression is empty
The pressure limit of compressed air is 0.1-0.6Mpa in air-blowing sweeping device.
5. the continuous temperature measurement method of LF refining furnace liquid steel temperature according to claim 3, it is characterised in that: the water cooling dress
The pressure limit for setting middle cooling water is 0.2-0.5Mpa.
6. the continuous temperature measurement method of LF refining furnace liquid steel temperature according to claim 1, it is characterised in that: step (2) institute
Image in acquisition furnace is stated, specific method is to feed wire hole or electrode using alignment lens stove gate, the bell of the thermal camera
Hole allows camera that can collect the shadow of molten steel and steel slag in furnace by adjusting the angle lens and installation site of thermal camera
Picture.
7. the continuous temperature measurement method of LF refining furnace liquid steel temperature according to claim 6, it is characterised in that: described infrared to take the photograph
Camera and molten steel identity distance are from 1-12m.
8. the continuous temperature measurement method of LF refining furnace liquid steel temperature according to claim 1-7, it is characterised in that: institute
It states thermal camera and is connect with the indoor computer of LF refining furnace operation by network mode, USB or serial mode.
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CN110631709A (en) * | 2019-09-24 | 2019-12-31 | 湖北理工学院 | Non-contact molten steel temperature detection method during converter steelmaking and converter reversing |
CN110926619A (en) * | 2019-12-17 | 2020-03-27 | 湖北理工学院 | Continuous temperature measurement method for temperature of molten steel in steel ladle |
CN111088414A (en) * | 2019-12-17 | 2020-05-01 | 湖北理工学院 | Oxygen lance with online continuous temperature measurement function and use method thereof |
CN111399551A (en) * | 2020-04-24 | 2020-07-10 | 深圳大成智能电气科技有限公司 | Steel ladle bottom blowing intelligent control device and method |
CN113804308A (en) * | 2021-09-24 | 2021-12-17 | 武汉科技大学 | Non-contact continuous temperature measuring device and method for converter |
CN113820019A (en) * | 2021-09-24 | 2021-12-21 | 武汉科技大学 | Automatic temperature measuring device and method for LF refining furnace of steel mill |
CN114032358A (en) * | 2021-11-08 | 2022-02-11 | 上海东震冶金工程技术有限公司 | Intelligent argon blowing device based on molten steel image identification mode |
CN114540575A (en) * | 2022-02-28 | 2022-05-27 | 北京中联杰能科技有限公司 | Electric furnace temperature measuring method, device, equipment and system |
CN115323110A (en) * | 2022-08-30 | 2022-11-11 | 洛阳豫新工程技术股份有限公司 | Method and system for non-contact measurement of temperature of molten steel in ladle furnace |
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CN110631709A (en) * | 2019-09-24 | 2019-12-31 | 湖北理工学院 | Non-contact molten steel temperature detection method during converter steelmaking and converter reversing |
CN110926619A (en) * | 2019-12-17 | 2020-03-27 | 湖北理工学院 | Continuous temperature measurement method for temperature of molten steel in steel ladle |
CN111088414A (en) * | 2019-12-17 | 2020-05-01 | 湖北理工学院 | Oxygen lance with online continuous temperature measurement function and use method thereof |
CN111399551A (en) * | 2020-04-24 | 2020-07-10 | 深圳大成智能电气科技有限公司 | Steel ladle bottom blowing intelligent control device and method |
CN113804308A (en) * | 2021-09-24 | 2021-12-17 | 武汉科技大学 | Non-contact continuous temperature measuring device and method for converter |
CN113820019A (en) * | 2021-09-24 | 2021-12-21 | 武汉科技大学 | Automatic temperature measuring device and method for LF refining furnace of steel mill |
CN114032358A (en) * | 2021-11-08 | 2022-02-11 | 上海东震冶金工程技术有限公司 | Intelligent argon blowing device based on molten steel image identification mode |
CN114032358B (en) * | 2021-11-08 | 2023-01-24 | 上海东震冶金工程技术有限公司 | Intelligent argon blowing device based on molten steel image identification mode |
CN114540575A (en) * | 2022-02-28 | 2022-05-27 | 北京中联杰能科技有限公司 | Electric furnace temperature measuring method, device, equipment and system |
CN115323110A (en) * | 2022-08-30 | 2022-11-11 | 洛阳豫新工程技术股份有限公司 | Method and system for non-contact measurement of temperature of molten steel in ladle furnace |
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Application publication date: 20190528 |