Continuous casting slab surface temperature measurement system and method adopting multispectral radiation technology

Abstract

The invention provides a continuous casting billet surface temperature measurement system and method adopting a multispectral radiation technology, and the method comprises the steps: firstly obtaining a continuous casting billet surface multispectral radiation image on continuous casting billet conveying equipment, then transmitting the multispectral radiation image to an optical splitter for light splitting, and then carrying out the signal conversion, amplification and conditioning; finally, the data is transmitted to the analysis processing module through the data acquisition module, and the brightness temperature of the continuous casting billet is calculated by using a continuous casting billet simulation solidification model. A basis is provided for adjusting process parameters such as cooling speed and throwing speed by efficiently and accurately detecting the surface temperature of a continuous casting billet, so that the continuous casting process is optimized, waste products and inferior-quality products caused by quality problems are reduced, the yield of products is increased, and the production cost is reduced; production accidents caused by temperature can be avoided, and the stability and safety of the continuous casting billet solidification process are guaranteed; by reasonably controlling the temperature, energy utilization can be optimized, unnecessary energy consumption is reduced, the influence on the environment is reduced, and the requirement of sustainable development is met.

Description

Technical Field

[0001] The invention relates to the technical field of continuous casting billet production, and in particular to a continuous casting billet surface temperature measurement system using multi-spectral radiation technology and a related information processing method. Background Art

[0002] During the continuous casting billet production process, it is necessary to monitor the surface temperature of the continuous casting billet in real time in order to fully understand the solidification process and provide a basis for adjusting process parameters such as cooling rate, billet drawing speed, and reducing energy consumption, so as to optimize the continuous casting process, reduce quality defects such as surface cracks and segregation, and improve the internal and surface quality of the billet.

[0003] The existing continuous casting billet temperature measurement methods include the following forms:

[0004] 1. Direct measurement method, using sensors such as contact thermometers or thermocouples to directly contact the surface for measurement;

[0005] 2. The nail measurement method measures the solidification condition and thickness of the billet shell by driving the nails into the billet and testing the thickness of the nails in the cold state;

[0006] 3. Infrared temperature measurement method, using monochrome or colorimetric infrared temperature measuring instruments to determine the surface temperature by measuring the infrared radiation energy radiated by the target surface;

[0007] 4. Thermal imager temperature measurement method: using a thermal imaging instrument can display the thermal image of the target surface in real time and determine the surface temperature through image analysis;

[0008] Although the above temperature measurement method can also obtain the surface temperature of the continuous casting billet, it has poor temperature measurement accuracy, poor resistance to environmental interference, and high temperature measurement cost, and cannot meet the production needs of continuous casting billets. At present, there is no real-time online continuous casting billet surface temperature system at home and abroad.

[0009] Therefore, there is an urgent need for a continuous casting billet surface temperature measurement system and method using multi-spectral radiation technology that can solve the above problems. Summary of the invention

[0010] The purpose of the present invention is to provide a continuous casting billet surface temperature measurement system and method using multi-spectral radiation technology to solve the problems existing in the above-mentioned prior art.

[0011] To achieve the above object, the present invention provides the following solutions:

[0012] The present invention provides a continuous casting billet surface temperature measurement system using multi-spectral radiation technology, comprising:

[0013] A multi-spectral radiation temperature measurement lens assembly, which is arranged on the side of the continuous casting billet conveying device and is used to continuously collect multi-spectral radiation images of the continuous casting billet surface;

[0014] A spectrometer connected to the multi-spectral radiation temperature measurement lens assembly via an optical fiber, and used for spectroscopic processing of the collected multi-spectral radiation image of the continuous casting billet surface;

[0015] A photoelectric sensor, connected to the optical splitter through multiple channels, for converting optical signals into electrical signals;

[0016] A data processing module, connected to the photoelectric sensor, for amplifying and conditioning the signal;

[0017] A data acquisition module, connected to the data processing module, for receiving processed signals;

[0018] An analysis and processing module, connected to the data acquisition module, is used to substitute the signal into the continuous casting billet simulation solidification model to calculate the brightness temperature of the continuous casting billet;

[0019] A storage module is connected to the data acquisition module and the analysis and processing module and is used to store data.

[0020] Preferably, the multi-spectral radiation temperature measurement lens assembly comprises a lens, the outer cover of the lens is provided with a heat-proof protective sleeve, and the heat-proof protective sleeve is provided with a purge cooling mechanism.

[0021] Preferably, the purge cooling mechanism comprises an air flow channel, an outlet end of the air flow channel is arranged toward the lens, and the air flow channel is connected to an air compressor through an air duct.

[0022] The present invention also provides a method for measuring the surface temperature of a continuous casting billet using a multi-spectral radiation technology, comprising the following steps:

[0023] S1. Obtain multi-spectral radiation images of the surface of the continuous casting billet and the iron oxide scale on the continuous casting billet conveying equipment through a multi-spectral radiation temperature measurement lens assembly;

[0024] S2. transmitting the multi-spectral radiation image to a spectrometer for spectroscopic processing, including removing water vapor interference;

[0025] S3. Convert the optical signal after the spectroscopic processing into an electrical signal through a photoelectric sensor;

[0026] S4. The electrical signal is transmitted to the data processing module for signal amplification and conditioning;

[0027] S5. The preprocessed signal is transmitted to the analysis and processing module through the data acquisition module, and the brightness temperature and the oxide scale temperature of the continuous casting billet are calculated using the continuous casting billet simulation solidification model.

[0028] Preferably, before acquiring the multi-spectral radiation image of the surface of the continuous casting billet on the continuous casting billet conveying device, the method further includes: calibrating the system through a standard temperature source.

[0029] Preferably, in step S1, the absorption peak of water is avoided when acquiring the multi-spectral radiation image of the surface of the continuous casting billet.

[0030] Preferably, in step S5, the continuous casting billet simulation solidification model is constructed by superheat parameters, casting speed parameters, crystallizer parameters and secondary cooling water temperature parameters.

[0031] Preferably, after calculating the target surface temperature of the continuous casting billet, the method further includes: using a temperature relationship and a predetermined conversion rule to convert the brightness temperature of the continuous casting billet into the actual temperature of the continuous casting billet.

[0032] Compared with the prior art, the present invention has achieved the following beneficial technical effects:

[0033] The present invention provides a continuous casting billet surface temperature measurement system and method using multi-spectral radiation technology. First, a multi-spectral radiation image of the continuous casting billet surface on the continuous casting billet conveying equipment is obtained, and then the multi-spectral radiation image is transmitted to a spectrometer for spectroscopic processing, followed by signal conversion, amplification, and conditioning, and finally transmitted to an analysis and processing module through a data acquisition module, and the brightness temperature of the continuous casting billet is calculated using a continuous casting billet simulation solidification model; efficient and accurate detection of the continuous casting billet surface temperature provides a basis for adjusting process parameters such as cooling rate, billet drawing speed, etc., so as to optimize the continuous casting process, reduce waste and defective products caused by quality problems, thereby improving the product yield and reducing production costs; it can also avoid production accidents caused by temperature, and ensure the stability and safety of the continuous casting billet solidification process; reasonable temperature control can optimize energy utilization, reduce unnecessary energy consumption, and reduce environmental impact, meeting the requirements of sustainable development. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0035] Figure 1 A schematic diagram of the structure of a continuous casting billet surface temperature measurement system using multi-spectral radiation technology provided by the present invention;

[0036] Figure 2 A flowchart of a method for measuring the surface temperature of a continuous casting billet using multi-spectral radiation technology provided by the present invention. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] The purpose of the present invention is to provide a continuous casting billet surface temperature measurement system and method using multi-spectral radiation technology to solve the problems existing in the prior art.

[0039] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0040] Embodiment 1:

[0041] This embodiment provides a continuous casting billet surface temperature measurement system using multi-spectral radiation technology, such as Figure 1 As shown, including:

[0042] A multi-spectral radiation temperature measurement lens assembly 1, which is arranged on the side of the continuous casting billet conveying equipment, and is used to continuously collect multi-spectral radiation images of the continuous casting billet surface; it includes a lens, and the outer sleeve of the lens is provided with a heat-proof protective sleeve to adapt to the high temperature environment, and a purge cooling mechanism is provided in the heat-proof protective sleeve; the purge cooling mechanism includes an air flow channel, and the outlet end of the air flow channel is arranged toward the lens, and the air flow channel is connected to the air compressor through an air duct, and the dust in front of the lens can be effectively removed by the purge cooling mechanism, so as to avoid the problem of inaccurate measurement results caused by dust blocking;

[0043] The spectrometer 2 is connected to the multi-spectral radiation temperature measurement lens assembly 1 through an optical fiber and is used for spectroscopic processing of the collected multi-spectral radiation image of the continuous casting billet surface;

[0044] The photoelectric sensor 3 is connected to the optical splitter 2 through multiple channels and is used to convert the optical signal into an electrical signal;

[0045] The data processing module 4 is connected to the photoelectric sensor 3 and is used to amplify and condition the signal;

[0046] The data acquisition module 5 is connected to the data processing module 4 and is used to receive the processed signal;

[0047] The analysis and processing module 6 is connected to the data acquisition module 5 and is used to substitute the signal into the continuous casting billet simulation solidification model to calculate the brightness temperature of the continuous casting billet;

[0048] The storage module 7 is connected to the data acquisition module 5 and the analysis and processing module 6 and is used for storing data.

[0049] This embodiment also provides a temperature measurement method based on the continuous casting billet surface temperature measurement system using the multi-spectral radiation technology. Figure 2 As shown, the following steps are included:

[0050] S1. First, the system is calibrated by a standard temperature source, and then a multi-spectral radiation image of the surface of the continuous casting billet and the iron oxide scale on the continuous casting billet conveying equipment is obtained by a multi-spectral radiation temperature measurement lens assembly; when obtaining the multi-spectral radiation image of the surface of the continuous casting billet, the absorption peak of water is avoided;

[0051] S2. transmitting the multi-spectral radiation image to a spectrometer for spectroscopic processing, including removing water vapor interference;

[0052] S3. Convert the optical signal after the spectroscopic processing into an electrical signal through a photoelectric sensor;

[0053] S4. The electrical signal is transmitted to the data processing module for signal amplification and conditioning;

[0054] S5. The preprocessed signal is transmitted to the analysis and processing module through the data acquisition module, and the brightness temperature and the oxide scale temperature of the continuous casting billet are calculated using the continuous casting billet simulation solidification model; the continuous casting billet simulation solidification model is constructed through superheat parameters, pulling speed parameters, crystallizer parameters and secondary cooling water temperature parameters, and finally the brightness temperature of the continuous casting billet is converted into the actual temperature of the continuous casting billet using the temperature relationship and the predetermined conversion rules.

[0055] The continuous casting billet surface temperature measurement system and method using multi-spectral radiation technology provided by the present invention have the following important significance:

[0056] 1. Improve product yield

[0057] Reduce waste and defective products caused by quality problems, thereby improving the yield rate of final products and reducing production costs;

[0058] 2. Enhance market competitiveness

[0059] High-quality continuous casting billets can produce higher-quality steel products, meet the market demand for high-quality steel products, and enhance the competitiveness of enterprises in the market;

[0060] 3. Energy saving and emission reduction

[0061] Reasonable temperature control can optimize energy utilization, reduce unnecessary energy consumption, reduce the impact on the environment, and meet the requirements of sustainable development;

[0062] 4. Ensure equipment life

[0063] Appropriate ingot temperature helps to reduce the thermal load of the equipment, extend the service life of the continuous casting equipment and reduce equipment maintenance costs.

[0064] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A continuous casting billet surface temperature measurement system using multi-spectral radiation technology, characterized in that: include: A multi-spectral radiation temperature measurement lens assembly, which is arranged on the side of the continuous casting billet conveying device and is used to continuously collect multi-spectral radiation images of the continuous casting billet surface; A spectrometer connected to the multi-spectral radiation temperature measurement lens assembly via an optical fiber, and used for spectroscopic processing of the collected multi-spectral radiation image of the continuous casting billet surface; A photoelectric sensor, connected to the optical splitter through multiple channels, for converting optical signals into electrical signals; A data processing module, connected to the photoelectric sensor, for amplifying and conditioning the signal; A data acquisition module, connected to the data processing module, for receiving processed signals; An analysis and processing module, connected to the data acquisition module, is used to substitute the signal into the continuous casting billet simulation solidification model to calculate the brightness temperature of the continuous casting billet; A storage module is connected to the data acquisition module and the analysis and processing module and is used to store data.

2. The continuous casting billet surface temperature measurement system using multi-spectral radiation technology according to claim 1 is characterized in that: The multi-spectral radiation temperature measurement lens assembly comprises a lens, the outer cover of the lens is provided with a heat-proof protective sleeve, and the heat-proof protective sleeve is provided with a purge cooling mechanism.

3. The continuous casting billet surface temperature measurement system using multi-spectral radiation technology according to claim 2 is characterized in that: The purge cooling mechanism comprises an air flow channel, the outlet end of the air flow channel is arranged toward the lens, and the air flow channel is connected to the air compressor through an air pipe.

4. A method for measuring the surface temperature of a continuous casting billet using multi-spectral radiation technology, characterized in that: The following steps are involved: S1. Obtain multi-spectral radiation images of the surface of the continuous casting billet and the iron oxide scale on the continuous casting billet conveying equipment through a multi-spectral radiation temperature measurement lens assembly; S2. transmitting the multi-spectral radiation image to a spectrometer for spectroscopic processing, including removing water vapor interference; S3. Convert the optical signal after the spectroscopic processing into an electrical signal through a photoelectric sensor; S4. The electrical signal is transmitted to the data processing module for signal amplification and conditioning; S5. The preprocessed signal is transmitted to the analysis and processing module through the data acquisition module, and the brightness temperature and the oxide scale temperature of the continuous casting billet are calculated using the continuous casting billet simulation solidification model.

5. The method for measuring the surface temperature of a continuous casting billet using multi-spectral radiation technology according to claim 4, characterized in that: Before obtaining the multi-spectral radiation image of the surface of the continuous casting billet on the continuous casting billet conveying device, the method also includes: calibrating the system through a standard temperature source.

6. The method for measuring the surface temperature of a continuous casting billet using multi-spectral radiation technology according to claim 4, characterized in that: In step S1, the absorption peak of water is avoided when acquiring the multi-spectral radiation image of the continuous casting billet surface.

7. The method for measuring the surface temperature of a continuous casting billet using multi-spectral radiation technology according to claim 4, characterized in that: In step S5, the continuous casting billet simulation solidification model is constructed by superheat parameters, casting speed parameters, crystallizer parameters and secondary cooling water temperature parameters.

8. The method for measuring the surface temperature of a continuous casting billet using multi-spectral radiation technology according to claim 4, characterized in that: After calculating the target temperature of the continuous casting billet surface, the method further includes: using a temperature relationship and a predetermined conversion rule to convert the brightness temperature of the continuous casting billet into the actual temperature of the continuous casting billet.

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