CN113591276A - Method and system for obtaining radiation coefficient of strip steel of annealing furnace - Google Patents
Method and system for obtaining radiation coefficient of strip steel of annealing furnace Download PDFInfo
- Publication number
- CN113591276A CN113591276A CN202110775011.7A CN202110775011A CN113591276A CN 113591276 A CN113591276 A CN 113591276A CN 202110775011 A CN202110775011 A CN 202110775011A CN 113591276 A CN113591276 A CN 113591276A
- Authority
- CN
- China
- Prior art keywords
- strip steel
- furnace
- radiation coefficient
- temperature
- actual temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 252
- 239000010959 steel Substances 0.000 title claims abstract description 252
- 230000005855 radiation Effects 0.000 title claims abstract description 138
- 238000000137 annealing Methods 0.000 title claims abstract description 94
- 238000000034 method Methods 0.000 title claims abstract description 61
- 238000002791 soaking Methods 0.000 claims abstract description 87
- 230000008569 process Effects 0.000 claims abstract description 22
- 238000004590 computer program Methods 0.000 claims description 14
- 230000004069 differentiation Effects 0.000 claims description 7
- 230000010354 integration Effects 0.000 claims description 7
- 238000003860 storage Methods 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 10
- 230000006870 function Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D11/00—Process control or regulation for heat treatments
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/08—Thermal analysis or thermal optimisation
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Thermal Sciences (AREA)
- Theoretical Computer Science (AREA)
- Evolutionary Computation (AREA)
- Geometry (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Control Of Heat Treatment Processes (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
The invention relates to the technical field of strip steel annealing, in particular to a method and a system for obtaining the radiation coefficient of strip steel of an annealing furnace, wherein the method comprises the following steps: acquiring an initial strip steel radiation coefficient in a soaking furnace section of the annealing furnace; measuring the actual temperature of the strip steel in real time in the process of adjusting the initial radiation coefficient of the strip steel; and if the target actual temperature measured in real time and the furnace temperature of the soaking furnace section meet the temperature setting condition, acquiring the adjusted strip steel radiation coefficient corresponding to the target actual temperature, and taking the adjusted strip steel radiation coefficient as the strip steel radiation coefficient of the annealing furnace. Therefore, the method measures the actual temperature of the strip steel based on the adjusted radiation coefficient of the strip steel, determines the radiation coefficient of the strip steel corresponding to the target actual temperature as the radiation coefficient of the strip steel of the annealing furnace by judging whether the actual temperature of the strip steel and the furnace temperature of the soaking furnace section meet the temperature setting condition, and ensures the accuracy of the radiation coefficient of the strip steel of the annealing furnace so that a pyrometer in the annealing furnace can accurately detect the strip steel.
Description
Technical Field
The invention relates to the technical field of strip steel annealing, in particular to a method and a system for obtaining the radiation coefficient of strip steel of an annealing furnace.
Background
The annealing furnace comprises different furnace sections, and a pyrometer is arranged at the end of each furnace section. The pyrometer is an important detecting instrument of the annealing furnace and is used for detecting the plate temperature of the strip steel in the annealing furnace in real time, so that a process worker can know the quality problem and the material problem of the strip steel in the annealing process according to the temperature detected by the pyrometer. Therefore, the process personnel take the pyrometer as an important process monitoring object and take the strip steel temperature detected by the pyrometer as a very important process parameter. However, one of the most important factors affecting the detection accuracy of the pyrometer is the strip emissivity. The pyrometer must be able to detect the strip precisely according to the correct radiation coefficient of the strip. However, in the annealing process, since the emissivity of the strip steel changes with the change of the strip steel at different moments, the emissivity of the strip steel cannot be accurately known, and the problem of low accuracy of obtaining the emissivity of the strip steel in the annealing furnace is caused.
Disclosure of Invention
The embodiment of the application provides a method and a system for obtaining the radiation coefficient of the strip steel of the annealing furnace, solves the technical problem that the precision of obtaining the radiation coefficient of the strip steel in the annealing furnace is low in the prior art, and achieves the technical effect that the obtained radiation coefficient of the strip steel in the annealing furnace is more accurate, so that the precision of obtaining the temperature of the strip steel by a pyrometer is improved.
In a first aspect, an embodiment of the present invention provides a method for obtaining a strip emissivity of an annealing furnace, which is applied to the annealing furnace, and the method includes:
acquiring an initial strip steel radiation coefficient in a soaking furnace section of the annealing furnace;
measuring the actual temperature of the strip steel in real time in the process of adjusting the initial radiation coefficient of the strip steel;
and if the target actual temperature measured in real time and the furnace temperature of the soaking furnace section meet the temperature setting condition, acquiring the adjustment strip steel radiation coefficient corresponding to the target actual temperature, and taking the adjustment strip steel radiation coefficient as the strip steel radiation coefficient of the annealing furnace.
Preferably, the adjusting the initial band steel radiation coefficient process further includes, after the actual temperature of the band steel is measured in real time:
when the actual temperature of the strip steel at the previous moment and the furnace temperature of the soaking furnace section do not meet the temperature setting condition, adjusting the initial strip steel radiation coefficient;
measuring the current actual temperature of the strip steel according to the adjusted initial strip steel radiation coefficient;
judging whether the current actual temperature of the strip steel and the furnace temperature meet the temperature setting condition or not;
if not, continuing to adjust the current band steel radiation coefficient until the adjusted current band steel radiation coefficient, wherein the measured actual temperature of the band steel is the target actual temperature.
Preferably, the adjusting the initial strip steel emissivity includes:
based on the equation
Obtaining the adjusted initial band steel radiation coefficient;
wherein e (t) y (t) -r (t); e (t) is the difference between the actual temperature of the strip steel and the furnace temperature of the soaking furnace section, y (t) is the actual temperature of the strip steel, and r (t) is the furnace temperature of the soaking furnace section;
u (t) is the new strip steel radiation coefficient, kp is a proportionality coefficient, TI is an integration time, and Td is a differentiation time.
Preferably, the real-time measurement of the actual temperature of the strip steel includes:
sending the adjusted initial strip steel radiation coefficient to a pyrometer, wherein the pyrometer is arranged at the strip steel corresponding to the tail of the soaking furnace section;
and measuring the actual temperature of the strip steel in real time through the pyrometer.
Preferably, in the process of adjusting the initial strip steel emissivity, the method further comprises:
and measuring the furnace temperature of the soaking furnace section through a thermocouple, wherein the thermocouple is arranged at the tail of the soaking furnace section.
Preferably, after the adjusting the strip emissivity as the strip emissivity of the annealing furnace, the method further includes:
and sending the radiation coefficient of the strip steel of the annealing furnace to the rest furnace sections of the annealing furnace.
Based on the same inventive concept, in a second aspect, the invention further provides a system for obtaining the emissivity of the strip steel of the annealing furnace, which is applied to a soaking furnace section of the annealing furnace, and comprises:
pyrometers, thermocouples, and PID controllers (distribution Integration Differentiation controllers); the pyrometer and the thermocouple are both connected with the PID controller;
the pyrometer is used for measuring the actual temperature of the strip steel;
the thermocouple is used for measuring the furnace temperature of the soaking furnace section;
the PID controller is used for acquiring an initial band steel radiation coefficient in a soaking furnace section of the annealing furnace; measuring the actual temperature of the strip steel in real time in the process of adjusting the initial radiation coefficient of the strip steel; and if the target actual temperature measured in real time and the furnace temperature of the soaking furnace section meet the temperature setting condition, acquiring the adjustment strip steel radiation coefficient corresponding to the target actual temperature, and taking the adjustment strip steel radiation coefficient as the strip steel radiation coefficient of the annealing furnace.
Preferably, the PID controller further includes:
when the target actual temperature and the furnace temperature of the soaking furnace section do not meet the temperature setting condition, adjusting the initial strip steel radiation coefficient;
measuring the actual temperature of the strip steel according to the adjusted initial strip steel radiation coefficient;
judging whether the actual temperature of the strip steel and the furnace temperature meet the temperature setting condition or not;
if not, continuing to adjust the current band steel radiation coefficient until the adjusted current band steel radiation coefficient, wherein the measured actual temperature of the band steel is the target actual temperature.
Based on the same inventive concept, in a third aspect, the present invention provides a computer apparatus comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the method for obtaining the emissivity of a strip of an annealing furnace when executing the program.
Based on the same inventive concept, in a fourth aspect, the present invention provides a computer-readable storage medium having stored thereon a computer program which, when being executed by a processor, carries out the steps of the method of obtaining a strip emissivity of an annealing furnace.
One or more technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:
1. in the embodiment of the application, the pyrometer of the soaking furnace section measures the actual temperature of the strip steel based on the adjusted strip steel radiation coefficient, and then determines the target actual temperature by judging whether the actual temperature of the strip steel and the furnace temperature of the soaking furnace section meet the temperature setting condition, so that the strip steel radiation coefficient corresponding to the target actual temperature is determined to be the strip steel radiation coefficient of the annealing furnace, the accuracy of the strip steel radiation coefficient of the annealing furnace is ensured, and the accuracy of the strip steel temperature acquired by the pyrometer in the annealing furnace is higher.
2. In the embodiment of the application, the radiation coefficient of the strip steel in the pyrometer is adjusted through the actual temperature of the strip steel and the furnace temperature of the soaking furnace section to obtain the adjusted radiation coefficient of the strip steel, the method for adjusting the radiation coefficient of the strip steel is reliable and practical, the accuracy of obtaining a new radiation coefficient of the strip steel is guaranteed, and the accuracy of obtaining the radiation coefficient of the strip steel of the annealing furnace is improved.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 shows a schematic of the structure of a soaking pit section in an embodiment of the invention;
FIG. 2 is a flow chart illustrating the steps of a method for obtaining the emissivity of a strip in an annealing furnace in an embodiment of the invention;
FIG. 3 is a block diagram showing a system for obtaining the emissivity of a strip in an annealing furnace according to an embodiment of the invention;
fig. 4 shows a schematic structural diagram of a computer device in an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Example one
The first embodiment of the invention provides a method for acquiring the radiation coefficient of strip steel of an annealing furnace, which is applied to the annealing furnace. Therefore, the annealing furnace will be described in detail.
Different furnace sections can be arranged in the annealing furnace according to different requirements. Typically, an annealing furnace comprises 11 furnace sections. At the end of each furnace section, there are 1 thermocouple 202 and 1 pyrometer 201 at the end of each furnace section, where the thermocouple 202 is used to detect the temperature of the furnace section and the pyrometer 201 is used to detect the actual temperature of the strip in the furnace section.
The 11 furnace sections have different functions and comprise a preheating section furnace, a non-oxidation heating furnace section, a radiant tube heating furnace section, a soaking furnace section, a controlled cooling furnace section, a fast cooling furnace section and the like. The method of the embodiment is a method for obtaining the radiation coefficient of the strip steel of the annealing furnace by taking the soaking furnace section in the annealing furnace as a principle, and the specific structure of the soaking furnace section is clearly explained.
As shown in fig. 2, fig. 2 is a specific structure of the soaking furnace section. In fig. 2, 1 thermocouple 202 is arranged at the tail end of the soaking furnace section, and 1 pyrometer 201 is arranged at the corresponding zone position at the tail end of the soaking furnace section, wherein the thermocouple 202 is used for detecting the furnace temperature of the soaking furnace section, and the pyrometer 201 is used for detecting the actual temperature of the strip steel in the soaking furnace section. The bottom of the soaking furnace section is provided with a resistance band 203, and the resistance band 203 is used for heating the strip steel. The principle of the soaking furnace section is as follows: in the soaking furnace section under ideal conditions, the furnace temperature of the soaking furnace section is consistent with the actual temperature of the strip steel in the soaking section.
The method of the present embodiment, as shown in fig. 1, includes:
s101, acquiring an initial strip steel radiation coefficient in a soaking furnace section of an annealing furnace;
s102, measuring the actual temperature of the strip steel in real time in the process of adjusting the initial radiation coefficient of the strip steel;
s103, if the target actual temperature measured in real time and the furnace temperature of the soaking furnace section meet the temperature setting condition, obtaining the adjusted strip steel radiation coefficient corresponding to the target actual temperature, and taking the adjusted strip steel radiation coefficient as the strip steel radiation coefficient of the annealing furnace.
It should be explained that, under ideal conditions, in the soaking furnace section, the furnace temperature is identical to the target actual temperature of the strip measured in real time. However, in practice, there is a certain error between the furnace temperature and the target actual temperature of the strip steel measured in real time, and when the difference between the furnace temperature and the target actual temperature of the strip steel is not large, the furnace temperature and the target actual temperature of the strip steel are considered to be consistent. Therefore, the error is used as a temperature setting condition, and the temperature setting condition can be that the difference between the furnace temperature and the target actual temperature is 0-1 ℃ and can also be set according to actual requirements.
According to the method of the embodiment, according to the principle of the soaking furnace section, namely the furnace temperature of the soaking furnace section and the target actual temperature of the strip steel meet the temperature setting condition, the actual temperature of the strip steel measured in real time is compared with the furnace temperature of the soaking furnace section based on the adjusted initial strip steel radiation coefficient, when the target actual temperature of the strip steel and the furnace temperature meet the temperature setting condition, the adjusted strip steel radiation coefficient corresponding to the target actual temperature is determined to be the strip steel radiation coefficient of the annealing furnace, then the annealing furnace continuously measures the real-time temperature of the strip steel according to the adjusted strip steel radiation coefficient, the temperature of the strip steel is accurately detected, and the accuracy of the strip steel radiation coefficient of the annealing furnace is guaranteed.
The following describes in detail specific implementation steps of the display method provided in this embodiment with reference to fig. 1:
first, step S101 is performed to obtain an initial strip emissivity in a soaking zone of an annealing furnace.
It should be noted that, in actual operation, an initial strip emissivity is set in the pyrometer 201 of the soaking furnace section in advance when the soaking furnace section starts to operate. The preset initial band steel radiation coefficient is used as a basis in the subsequent process of adjusting the initial band steel radiation coefficient. Usually, the initial strip emissivity is 0.5, and can be set according to actual requirements.
Next, step S102 is executed to measure the actual temperature of the strip steel in real time during the process of adjusting the initial strip steel emissivity.
Specifically, the adjusted initial strip steel radiation coefficient is sent to a pyrometer 201, wherein the pyrometer 201 is arranged at the strip steel position corresponding to the tail of the soaking furnace section; the actual temperature of the strip steel is measured in real time by the pyrometer 201. It should be emphasized that the strip emissivity is an important parameter for the pyrometer 201 to measure the temperature of the strip, and directly affects the accuracy of the temperature measurement by the pyrometer 201. Therefore, the pyrometer 201 in the soaking zone measures the actual temperature of the strip in the soaking zone according to the adjusted initial strip emissivity. And in the process of adjusting the initial strip steel emissivity, measuring the furnace temperature of the soaking furnace section through a thermocouple 202, wherein the thermocouple 202 is arranged at the tail of the soaking furnace section.
After the actual temperature of the strip steel is measured in real time, whether the actual temperature of the strip steel and the furnace temperature meet the temperature setting condition needs to be judged, and the judgment process is as follows:
when the actual temperature of the strip steel at the last moment and the furnace temperature of the soaking furnace section do not meet the temperature setting condition, adjusting the initial strip steel radiation coefficient; measuring the actual temperature of the current band steel according to the adjusted initial band steel radiation coefficient; judging whether the actual temperature and the furnace temperature of the current strip steel meet the temperature setting condition or not; if not, continuing to adjust the current band steel radiation coefficient until the adjusted current band steel radiation coefficient, and taking the measured actual temperature of the band steel as the target actual temperature.
For example, assuming that the actual temperature of the strip measured at a certain time is T1 and the furnace temperature is T2, T1 and T2 satisfy the temperature setting conditions at that time. And after a period of time, when the T1 and the T2 do not meet the temperature setting condition, adjusting the radiation coefficient S1 of the strip steel corresponding to the T1. And adjusting S1 to obtain the adjusted radiation coefficient S2 of the strip steel, and measuring the actual temperature T1' of the current strip steel according to S2. If the T1' and the T2 do not meet the temperature setting condition, continuing to adjust S2 until the adjusted current radiation coefficient of the strip steel, the measured actual temperature T of the strip steel and the measured T2 meet the temperature setting condition, and taking the actual temperature T of the strip steel as the target actual temperature.
The specific process of adjusting the initial strip steel radiation is as follows:
the furnace temperature of the soaking furnace section and the actual temperature of the strip steel measured in real time are used as input and input into the following equation to obtain the adjusted initial strip steel radiation coefficient.
Equation (e), (t) y (t) -r (t) (1);
wherein e (t) is the difference between the actual temperature of the strip steel and the furnace temperature of the soaking furnace section, y (t) is the actual temperature of the strip steel, and r (t) is the furnace temperature of the soaking furnace section.
Based on the equation
Obtaining the adjusted initial band steel radiation coefficient;
wherein u (t) is a new strip steel radiation coefficient, kp is a proportionality coefficient, TI is an integration time, and Td is a differentiation time.
Based on equations (1) and (2), the rule for obtaining the adjusted initial strip steel emissivity is as follows:
when the actual temperature of the strip steel is higher than the furnace temperature of the soaking furnace section, the radiation coefficient of the strip steel corresponding to the actual temperature is reduced, and the adjusted radiation coefficient of the strip steel is obtained, so that the actual temperature of the strip steel measured by the pyrometer 201 according to the adjusted radiation coefficient of the strip steel is reduced.
When the actual temperature of the strip steel is lower than the furnace temperature of the soaking furnace section, the radiation coefficient of the strip steel corresponding to the actual temperature is increased to obtain the adjusted radiation coefficient of the strip steel, so that the actual temperature of the strip steel measured by the pyrometer 201 according to the adjusted radiation coefficient of the strip steel is increased.
After the target actual temperature of the strip steel is determined, step S103 is executed, if the target actual temperature measured in real time and the furnace temperature of the soaking furnace section satisfy the temperature setting condition, an adjusted strip steel emissivity corresponding to the target actual temperature is obtained, and the adjusted strip steel emissivity is used as the strip steel emissivity of the annealing furnace.
And after the strip steel radiation coefficient of the annealing furnace is adjusted to be used as the strip steel radiation coefficient of the annealing furnace, namely the strip steel radiation coefficient of the annealing furnace is determined, the strip steel radiation coefficient of the annealing furnace is sent to the rest furnace sections of the annealing furnace. The pyrometers 201 in the remaining sections operate precisely according to the determined strip emissivity of the annealing furnace.
The method of this example is illustrated in clear and detailed, using pyrometer a and thermocouple B in the soaking zone as examples.
When the soaking furnace section starts to work, a stable heat heating is generatedStrip steel, wherein the furnace temperature of the soaking pit section is measured to be T by a thermocouple BB. After the strip steel is heated by the soaking furnace section, the actual temperature of the strip steel is measured to be T by the pyrometer A according to the initial strip steel radiation coefficient RA. Then, T is judgedAAnd TBWhether the temperature setting condition is satisfied.
When T isAAnd TBAnd when the temperature setting condition is met, the initial band steel radiation coefficient R is used as the band steel radiation coefficient of the annealing furnace, and the initial band steel radiation coefficient R is sent to the other furnace sections in the annealing furnace, so that the pyrometers of the other furnace sections work according to R.
When T isAAnd TBWhen the temperature setting condition is not satisfied, the temperature is adjusted to TAAnd TBAnd substituting equations (1) and (2) to obtain the adjusted initial strip steel radiation coefficient R'. The pyrometer A measures the actual temperature T of the strip in the soaking pit according to RA'. Then, T is continuously judgedA' and TBWhether the temperature setting condition is satisfied. When T isA' and TBAnd when the temperature setting condition is met, taking R 'as the strip steel radiation coefficient of the annealing furnace, and sending R' to the other furnace sections in the annealing furnace so that the pyrometers of the other furnace sections work according to R.
When T isA' and TBWhen the temperature setting condition is not satisfied, the temperature is adjusted to TA' and TBAnd substituting equations (1) and (2) to obtain the adjusted radiation coefficient R' of the strip steel. A, continuously measuring the actual temperature of the strip steel in the soaking pit as T according to R ″A". Then, T is continuously judgedA"and TBWhether or not they are the same.
And determining the current radiation coefficient of the strip steel as the radiation coefficient of the strip steel of the annealing furnace until the actual temperature of the strip steel measured according to the current radiation coefficient of the strip steel and the furnace temperature of the soaking furnace section meet the temperature setting condition.
One or more technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:
1. in this embodiment, the pyrometer of the soaking furnace section measures the actual temperature of the strip steel based on the adjusted strip steel radiation coefficient, and then determines the target actual temperature by judging whether the actual temperature of the strip steel and the furnace temperature of the soaking furnace section meet the temperature setting condition, thereby determining the strip steel radiation coefficient corresponding to the target actual temperature as the strip steel radiation coefficient of the annealing furnace, ensuring the accuracy of the strip steel radiation coefficient of the annealing furnace, and enabling the pyrometer in the annealing furnace to acquire the strip steel temperature with higher accuracy.
2. In the embodiment, the radiation coefficient of the strip steel in the pyrometer is adjusted through the actual temperature of the strip steel and the furnace temperature of the soaking furnace section to obtain the adjusted radiation coefficient of the strip steel, the method for adjusting the radiation coefficient of the strip steel is reliable and practical, the accuracy of obtaining a new radiation coefficient of the strip steel is guaranteed, and the accuracy of obtaining the radiation coefficient of the strip steel of the annealing furnace is improved.
Example two
Based on the same inventive concept, the second embodiment of the present invention further provides a system for obtaining the emissivity of a strip steel of an annealing furnace, which is applied to a soaking furnace section of the annealing furnace, as shown in fig. 3, and comprises:
a pyrometer 201, a thermocouple 202, and a PID controller (performance Integration Differentiation controller) 204; the pyrometer 201 and the thermocouple 202 are both connected with the PID controller 204;
the pyrometer 201 is used for measuring the actual temperature of the strip steel;
the thermocouple 202 is used for measuring the furnace temperature of the soaking furnace section;
the PID controller 204 is used for acquiring an initial strip steel radiation coefficient in a soaking furnace section of the annealing furnace; measuring the actual temperature of the strip steel in real time in the process of adjusting the initial radiation coefficient of the strip steel; and if the target actual temperature measured in real time and the furnace temperature of the soaking furnace section meet the temperature setting condition, acquiring the adjustment strip steel radiation coefficient corresponding to the target actual temperature, and taking the adjustment strip steel radiation coefficient as the strip steel radiation coefficient of the annealing furnace.
As an alternative embodiment, the PID controller 204 further includes:
when the target actual temperature and the furnace temperature of the soaking furnace section do not meet the temperature setting condition, adjusting the initial strip steel radiation coefficient;
measuring the actual temperature of the strip steel according to the adjusted initial strip steel radiation coefficient;
judging whether the actual temperature of the strip steel and the furnace temperature meet the temperature setting condition or not;
if not, continuing to adjust the current band steel radiation coefficient until the adjusted current band steel radiation coefficient, wherein the measured actual temperature of the band steel is the target actual temperature.
As an optional embodiment, the adjusting the initial strip emissivity includes:
based on the equation
Obtaining the adjusted initial band steel radiation coefficient;
wherein e (t) y (t) -r (t); e (t) is the difference between the actual temperature of the strip steel and the furnace temperature of the soaking furnace section, y (t) is the actual temperature of the strip steel, and r (t) is the furnace temperature of the soaking furnace section;
u (t) is the new strip steel radiation coefficient, kp is a proportionality coefficient, TI is an integration time, and Td is a differentiation time.
As an optional embodiment, the PID controller 204 is further configured to send the adjusted initial strip steel emissivity to the pyrometer 201, where the pyrometer 201 is disposed at the strip steel corresponding to the end of the soaking furnace section; the pyrometer 201 then measures the actual temperature of the strip in real time.
As an alternative embodiment, a thermocouple 202 is used to measure the furnace temperature of the soaking furnace section, wherein the thermocouple 202 is disposed at the end of the soaking furnace section.
As an alternative embodiment, the PID controller 204 is further configured to send the strip emissivity of the annealing furnace to the remaining furnace sections of the annealing furnace after the adjusted strip emissivity is used as the strip emissivity of the annealing furnace.
Since the system for obtaining the emissivity of the strip steel of the annealing furnace described in this embodiment is a system used for implementing the method for obtaining the emissivity of the strip steel of the annealing furnace in the first embodiment of this application, based on the method for obtaining the emissivity of the strip steel of the annealing furnace described in the first embodiment of this application, a person skilled in the art can understand a specific implementation manner of the system for obtaining the emissivity of the strip steel of the annealing furnace in this embodiment and various variations thereof, so that a detailed description of how to implement the method in the first embodiment of this application by the system for obtaining the emissivity of the strip steel of the annealing furnace is omitted here. The system adopted by the person skilled in the art to implement the method for obtaining the emissivity of the strip of the annealing furnace in the first embodiment of the present application is within the protection scope of the present application.
EXAMPLE III
Based on the same inventive concept, the third embodiment of the present invention further provides a computer device, as shown in fig. 4, comprising a memory 404, a processor 402 and a computer program stored in the memory 404 and operable on the processor 402, wherein the processor 402 executes the computer program to realize the steps of any one of the above-mentioned methods for obtaining the emissivity of a strip steel of an annealing furnace.
Where in fig. 3 a bus architecture (represented by bus 400), bus 400 may include any number of interconnected buses and bridges, bus 400 linking together various circuits including one or more processors, represented by processor 402, and memory, represented by memory 404. The bus 400 may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. A bus interface 406 provides an interface between the bus 400 and the receiver 401 and transmitter 403. The receiver 401 and the transmitter 403 may be the same element, i.e., a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 402 is responsible for managing the bus 400 and general processing, while the memory 404 may be used for storing data used by the processor 402 in performing operations.
Example four
Based on the same inventive concept, a fourth embodiment of the present invention also provides a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, realizes the steps of any one of the methods for obtaining the emissivity of a strip of an annealing furnace as described in the first embodiment.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A method for obtaining the radiation coefficient of strip steel of an annealing furnace is applied to the annealing furnace and is characterized by comprising the following steps:
acquiring an initial strip steel radiation coefficient in a soaking furnace section of the annealing furnace;
measuring the actual temperature of the strip steel in real time in the process of adjusting the initial radiation coefficient of the strip steel;
and if the target actual temperature measured in real time and the furnace temperature of the soaking furnace section meet the temperature setting condition, acquiring the adjustment strip steel radiation coefficient corresponding to the target actual temperature, and taking the adjustment strip steel radiation coefficient as the strip steel radiation coefficient of the annealing furnace.
2. The method of claim 1, wherein said adjusting said initial strip emissivity process, after measuring in real time the actual temperature of the strip, further comprises:
when the actual temperature of the strip steel at the previous moment and the furnace temperature of the soaking furnace section do not meet the temperature setting condition, adjusting the initial strip steel radiation coefficient;
measuring the current actual temperature of the strip steel according to the adjusted initial strip steel radiation coefficient;
judging whether the current actual temperature of the strip steel and the furnace temperature meet the temperature setting condition or not;
if not, continuing to adjust the current band steel radiation coefficient until the adjusted current band steel radiation coefficient, wherein the measured actual temperature of the band steel is the target actual temperature.
3. The method of claim 2, wherein said adjusting said initial strip emissivity comprises:
based on the equation
Obtaining the adjusted initial band steel radiation coefficient;
wherein e (t) y (t) -r (t); e (t) is the difference between the actual temperature of the strip steel and the furnace temperature of the soaking furnace section, y (t) is the actual temperature of the strip steel, and r (t) is the furnace temperature of the soaking furnace section;
u (t) is the new strip steel radiation coefficient, kp is a proportionality coefficient, TI is an integration time, and Td is a differentiation time.
4. The method of claim 1, wherein said measuring the actual temperature of the strip in real time comprises:
sending the adjusted initial strip steel radiation coefficient to a pyrometer, wherein the pyrometer is arranged at the strip steel corresponding to the tail of the soaking furnace section;
and measuring the actual temperature of the strip steel in real time through the pyrometer.
5. The method of claim 1, wherein said adjusting said initial strip emissivity further comprises:
and measuring the furnace temperature of the soaking furnace section through a thermocouple, wherein the thermocouple is arranged at the tail of the soaking furnace section.
6. The method of claim 1, wherein said adjusting the strip emissivity as the strip emissivity of the annealing furnace further comprises:
and sending the radiation coefficient of the strip steel of the annealing furnace to the rest furnace sections of the annealing furnace.
7. The utility model provides a system for obtain belted steel emissivity of annealing stove is applied to the soaking pit section of annealing stove which characterized in that includes: pyrometers, thermocouples, and PID controllers (distribution Integration Differentiation controllers); the pyrometer and the thermocouple are both connected with the PID controller;
the pyrometer is used for measuring the actual temperature of the strip steel;
the thermocouple is used for measuring the furnace temperature of the soaking furnace section;
the PID controller is used for acquiring an initial band steel radiation coefficient in a soaking furnace section of the annealing furnace; measuring the actual temperature of the strip steel in real time in the process of adjusting the initial radiation coefficient of the strip steel; and if the target actual temperature measured in real time and the furnace temperature of the soaking furnace section meet the temperature setting condition, acquiring the adjustment strip steel radiation coefficient corresponding to the target actual temperature, and taking the adjustment strip steel radiation coefficient as the strip steel radiation coefficient of the annealing furnace.
8. The system of claim 7, wherein the PID controller further comprises:
when the target actual temperature and the furnace temperature of the soaking furnace section do not meet the temperature setting condition, adjusting the initial strip steel radiation coefficient;
measuring the actual temperature of the strip steel according to the adjusted initial strip steel radiation coefficient;
judging whether the actual temperature of the strip steel and the furnace temperature meet the temperature setting condition or not;
if not, continuing to adjust the current band steel radiation coefficient until the adjusted current band steel radiation coefficient, wherein the measured actual temperature of the band steel is the target actual temperature.
9. Computer arrangement comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor realizes the method steps of any of claims 1-6 when executing the program.
10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method steps of any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110775011.7A CN113591276A (en) | 2021-07-08 | 2021-07-08 | Method and system for obtaining radiation coefficient of strip steel of annealing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110775011.7A CN113591276A (en) | 2021-07-08 | 2021-07-08 | Method and system for obtaining radiation coefficient of strip steel of annealing furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113591276A true CN113591276A (en) | 2021-11-02 |
Family
ID=78246566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110775011.7A Pending CN113591276A (en) | 2021-07-08 | 2021-07-08 | Method and system for obtaining radiation coefficient of strip steel of annealing furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113591276A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6326315A (en) * | 1986-07-18 | 1988-02-03 | Kawasaki Steel Corp | Method for calibrating radiation thermometer for continuous annealing furnace |
| CN102876880A (en) * | 2012-09-26 | 2013-01-16 | 攀钢集团攀枝花钢钒有限公司 | Heating control method of vertical galvanization annealing furnace |
| CN103436688A (en) * | 2013-08-23 | 2013-12-11 | 首钢总公司 | Method for detecting heat radiation coefficient of steel strips |
| CN105241581A (en) * | 2015-10-08 | 2016-01-13 | 中冶南方工程技术有限公司 | Temperature measurement, adjustment and calibration method and system for radiation pyrometer for continuous annealing furnace |
| CN108330257A (en) * | 2018-02-26 | 2018-07-27 | 首钢京唐钢铁联合有限责任公司 | Annealing furnace bringing-up section temprature control method and device |
-
2021
- 2021-07-08 CN CN202110775011.7A patent/CN113591276A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6326315A (en) * | 1986-07-18 | 1988-02-03 | Kawasaki Steel Corp | Method for calibrating radiation thermometer for continuous annealing furnace |
| CN102876880A (en) * | 2012-09-26 | 2013-01-16 | 攀钢集团攀枝花钢钒有限公司 | Heating control method of vertical galvanization annealing furnace |
| CN103436688A (en) * | 2013-08-23 | 2013-12-11 | 首钢总公司 | Method for detecting heat radiation coefficient of steel strips |
| CN105241581A (en) * | 2015-10-08 | 2016-01-13 | 中冶南方工程技术有限公司 | Temperature measurement, adjustment and calibration method and system for radiation pyrometer for continuous annealing furnace |
| CN108330257A (en) * | 2018-02-26 | 2018-07-27 | 首钢京唐钢铁联合有限责任公司 | Annealing furnace bringing-up section temprature control method and device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104655327B (en) | Resistance temperature detector verification system and method | |
| JP2006113724A (en) | Control method, temperature control method, temperature regulator, heat treatment equipment, program and recording medium | |
| JP2007192661A (en) | Temperature estimation method and apparatus | |
| WO2017211071A1 (en) | Temperature prediction method and apparatus thereof | |
| CN110307910B (en) | Method and device for acquiring temperature of billet of walking beam heating furnace | |
| CN102455134A (en) | Automatic temperature regulating system for constant temperature furnace | |
| CN113591276A (en) | Method and system for obtaining radiation coefficient of strip steel of annealing furnace | |
| CN105278329B (en) | PID controller and method of data capture | |
| JP2009254104A (en) | Conductor monitor for power receiving and distributing equipment | |
| CN112461010B (en) | Method, device and medium for reducing energy consumption of heating furnace to be rolled | |
| KR100356159B1 (en) | Apparatus for controlling combustion of furnace | |
| CN110863102B (en) | Method and device for correcting thermocouple value of heating section of annealing furnace | |
| JP2022148537A (en) | Temperature sensor abnormality determination device, temperature sensor abnormality determination method, and temperature sensor abnormality determination program | |
| JP5328303B2 (en) | Optical element manufacturing apparatus and manufacturing method thereof | |
| JP6627609B2 (en) | Cooling control method and cooling device | |
| CN113483919B (en) | Temperature calibration method, system, storage medium and electronic equipment | |
| JP7139221B2 (en) | State determination device and state determination method | |
| JP3455918B2 (en) | Vulcanizer temperature controller | |
| CN113974448A (en) | Method and device for acquiring temperature regulation strategy and electronic equipment | |
| CN114791174B (en) | Water temperature control method and device, water heater and storage medium | |
| CN115903959A (en) | Embedded temperature control method and device for radiant tube heating furnace | |
| TWI691856B (en) | Temperature profile prediction system and method thereof | |
| SU1261935A1 (en) | Device for controlling article temperature | |
| JP2005055378A (en) | Temperature detector, temperature detecting method, and temperature detecting program | |
| JPH01300188A (en) | Temperature controller for heating furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |