CN116992579A - Method and device for evaluating measurement deviation of strip steel thermometer in heating section - Google Patents

Method and device for evaluating measurement deviation of strip steel thermometer in heating section Download PDF

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Publication number
CN116992579A
CN116992579A CN202310528538.9A CN202310528538A CN116992579A CN 116992579 A CN116992579 A CN 116992579A CN 202310528538 A CN202310528538 A CN 202310528538A CN 116992579 A CN116992579 A CN 116992579A
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China
Prior art keywords
temperature
heating section
strip steel
deviation
heating
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CN202310528538.9A
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Chinese (zh)
Inventor
任伟超
孙康
李响
蒋晓刚
刘华赛
阳锋
马平
张振方
陈文武
刘建明
赵军
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Shougang Jingtang United Iron and Steel Co Ltd
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Shougang Jingtang United Iron and Steel Co Ltd
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Priority to CN202310528538.9A priority Critical patent/CN116992579A/en
Publication of CN116992579A publication Critical patent/CN116992579A/en
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/10—Geometric CAD
    • G06F30/17—Mechanical parametric or variational design
    • 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
    • G06F2119/02—Reliability analysis or reliability optimisation; Failure analysis, e.g. worst case scenario performance, failure mode and effects analysis [FMEA]
    • 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

Abstract

The embodiment of the application provides a method and a device for evaluating measurement deviation of a heating section strip steel thermometer, and relates to the technical field of strip steel production, wherein the method comprises the following steps: correcting the heat load output of the heating section burner, obtaining the predicted temperature of the strip steel in the heating section after the correction of the heating section burner, and calculating the temperature predicted deviation of the strip steel in the heating section based on the predicted temperature; acquiring temperature information of each heating area in the heating section, and calculating the temperature measurement deviation of the strip steel in the heating section based on the temperature information of each heating area in the heating section; acquiring temperature information of a soaking section, and calculating temperature measurement deviation of the strip steel in the soaking section based on the temperature information of the soaking section; and obtaining the measurement deviation of the outlet thermometer of the heating section based on the temperature prediction deviation of the strip steel in the heating section, the temperature measurement deviation of the strip steel in the heating section and the temperature measurement deviation of the strip steel in the soaking section. The scheme solves the problem that the measurement accuracy of the heating section strip steel thermometer is difficult to evaluate.

Description

Method and device for evaluating measurement deviation of strip steel thermometer in heating section
Technical Field
The application relates to the technical field of strip steel production, in particular to a measuring deviation evaluation method of a heating section strip steel thermometer, a measuring deviation evaluation device of the heating section strip steel thermometer, a computer readable storage medium and electronic equipment.
Background
The cold rolling vertical annealing furnace mainly achieves the purposes of eliminating the work hardening of steel, recovering the plastic deformation capability of the steel and improving the structural performance through a certain process route.
The conventional vertical annealing furnace has the following process route:
1) Heating the strip steel to the vicinity of an A1 temperature line in a heating section; the carbide is partially or completely dissolved under the influence of the temperature of the outlet of the heating section;
2) And (3) preserving the temperature of the strip steel for 1-2 minutes by utilizing a soaking section, and carrying out recovery recrystallization.
3) Through a slow cooling section, austenite carbon enrichment is carried out near 680 ℃ when the strip steel is slowly cooled;
4) The strip steel is rapidly cooled to a certain temperature by utilizing a rapid cooling section, and tissue regulation and control are carried out;
5) And then entering an overaging section for tissue regulation.
And a thermometer is arranged at the outlet of each furnace section (such as a heating section, a soaking section, a slow cooling section and the like) of the annealing furnace and is used for measuring the temperature of the strip steel, and the measurement accuracy of the thermometer directly influences the performance of the strip steel after heat treatment.
The measurement angle of thermometer, the cleanliness factor of lens can influence temperature measurement's accuracy, because annealing stove is a black box, during normal production, can't mark the angle or clear up the lens, in case because of the thermometer detects and appears unusual, often can not in time discover. For this reason, it is necessary to develop a heating section thermometer measurement accuracy evaluation system for quantitatively evaluating the measurement deviation of the heating section thermometer.
Disclosure of Invention
The embodiment of the application provides a measuring deviation evaluation method of a heating section strip steel thermometer, a measuring deviation evaluation device of the heating section strip steel thermometer, a computer readable storage medium and an electronic device.
Other features and advantages of the application will be apparent from the following detailed description, or may be learned by the practice of the application.
According to a first aspect of the embodiment of the application, there is provided a method for evaluating measurement deviation of a heating section strip steel thermometer, comprising:
correcting the heat load output of the heating section burner, obtaining the predicted temperature of the strip steel in the heating section after the correction of the heating section burner, and calculating the temperature predicted deviation of the strip steel in the heating section based on the predicted temperature;
acquiring temperature information of each heating area in the heating section, and calculating the temperature measurement deviation of the strip steel in the heating section based on the temperature information of each heating area in the heating section;
Acquiring temperature information of a soaking section, and calculating temperature measurement deviation of the strip steel in the soaking section based on the temperature information of the soaking section;
and obtaining the measurement deviation of the outlet thermometer of the heating section based on the temperature prediction deviation of the strip steel in the heating section, the temperature measurement deviation of the strip steel in the heating section and the temperature measurement deviation of the strip steel in the soaking section.
In some embodiments of the present application, based on the foregoing solution, the correcting the heat load output of the heating section burner, to obtain the predicted temperature of the strip steel after the correction of the heating section burner in the heating section, includes:
correcting the heat load output of the burners of the heating section based on the number of damaged burners in the heating section;
calculating to obtain the predicted temperature of the strip steel in the corrected heating section by using a formula (1) based on the heat load output of the corrected heating section burner;
in formula (1), stript RTF_corr The predicted temperature of the corrected heating section of the strip steel is obtained; p (P) HD_corr Outputting the corrected heat load of the heating section burner; w (w) ref Designing a reference width for the annealing furnace; v FHL Designing maximum speed for the annealing furnace; w (w) F Is the width of the strip steel; thk F Is the thickness of the strip steel; v F The actual running speed of the strip steel in the annealing furnace; a, a ref The reference thickness is the change rate of the annealing temperature; b ref Is the reference thickness of the strip steel.
In some embodiments of the present application, based on the foregoing, the correcting the heat load output of the heating segment burner based on the number of damaged burners in the heating segment includes:
obtaining the number of damaged burners in the heating section;
based on the number of damaged burners, correcting the heat load output of the heating section burners by using a formula (2);
in the formula (2), P HD_corr Outputting the corrected heat load of the heating section burner; w (W) j The total power of the j-th row of burners; p (P) j Outputting heat load for the j-th column; n (N) burn_j The number of the j-th row of burners; n (N) NG_burn_j And j is the number of the fault burners in the j th row, and j is the number of the burners.
In some embodiments of the present application, based on the foregoing, the calculating a temperature prediction deviation of the strip steel in the heating section based on the predicted temperature includes:
obtaining a temperature measured value of the strip steel in a heating section;
calculating the temperature prediction deviation of the strip steel in the heating section by using a formula (3) based on the temperature measured value of the strip steel in the heating section;
dif StripT_RTF ＝StripT RTF_cor ―StripT RTF_pv ； (3)
in the formula (3), dif StripT_RTF Predicting deviation for the temperature of the strip steel in the heating section; stripT (StripT) RTF_corr The predicted temperature of the corrected heating section of the strip steel is obtained; stripT (StripT) RTF_pv Is a temperature measurement of the strip steel in the heating section.
In some embodiments of the present application, based on the foregoing solution, the obtaining temperature information of each heating area in the heating section, and calculating a temperature measurement deviation of the strip steel in the heating section based on the temperature information of each heating area in the heating section, includes:
Acquiring an average value of temperature set values of all heating areas in the heating section and an average value of temperature measured values;
calculating the temperature measurement deviation of the strip steel in the heating section by using a formula (4) based on the average value of the temperature set values and the average value of the temperature measured values of each heating area in the heating section;
in the formula (4), dif ZoneT_RTF Measuring deviation for the temperature of the strip steel in the heating section; zoneT sp An average value of the temperature setting value for each heating zone of the heating section; zoneT pv An average value of the temperature measurement value for each heating region of the heating section; stripT (StripT) RTF_pv Is a temperature measurement of the strip steel in the heating section.
In some embodiments of the present application, based on the foregoing solution, the obtaining temperature information of the soaking section, and calculating a temperature measurement deviation of the strip steel in the soaking section based on the temperature information of the soaking section, includes:
acquiring a temperature measurement value of the strip steel in the soaking section, and calculating to obtain a temperature measurement deviation of the strip steel in the soaking section by using a formula (5) based on the temperature measurement value of the strip steel in the soaking section;
dif ZoneT_SF ＝ZoneT SF_pv ―StripT RTF_pv ； (5)
in formula (5), dif ZoneT_SF Measuring deviation for the temperature of the strip steel in the soaking section; zoneT SF_pv Is a temperature measurement value of the soaking section; stripT (StripT) RTF_pv Is a temperature measurement of the strip steel in the heating section.
In some embodiments of the present application, based on the foregoing solutions, the obtaining the measurement deviation of the outlet thermometer of the heating section based on the predicted deviation of the temperature of the strip steel in the heating section, the measurement deviation of the temperature of the strip steel in the heating section, and the measurement deviation of the temperature of the strip steel in the soaking section includes:
Calculating to obtain the measuring deviation of the outlet thermometer of the heating section by utilizing a formula (6) based on the temperature predicting deviation of the strip steel in the heating section, the temperature measuring deviation of the strip steel in the heating section and the temperature measuring deviation of the strip steel in the soaking section;
in the formula (6), dif RTF_PY Measuring deviation for a heating section outlet thermometer; dif (dif) StripT_RTF Predicting deviation for the temperature of the strip steel in the heating section; dif (dif) ZoneT_RTF Measuring deviation for the temperature of the strip steel in the heating section; dif (dif) ZoneT_SF Measuring deviation for the temperature of the strip steel in the soaking section; k (k) StripT_RTF Measuring the predicted deviation of the temperature of the strip steel in the heating section by a thermometer at the outlet of the heating sectionWeight ratio of deviation; k (k) ZoneT_RTF The weight proportion of the temperature measurement deviation of the strip steel in the heating section to the measurement deviation of the outlet thermometer of the heating section is calculated; k (k) ZoneT_SF The weight proportion of the temperature measurement deviation of the strip steel in the soaking section to the measurement deviation of the outlet thermometer of the heating section is calculated.
According to a second aspect of the embodiment of the present application, there is provided a measurement deviation evaluating device for a heating section strip steel thermometer, including:
the first deviation calculation unit is used for correcting the heat load output of the heating section burner, obtaining the predicted temperature of the strip steel in the heating section after the heating section burner is corrected, and calculating the temperature predicted deviation of the strip steel in the heating section based on the predicted temperature;
The second deviation calculation unit is used for obtaining the temperature information of each heating area in the heating section and calculating the temperature measurement deviation of the strip steel in the heating section based on the temperature information of each heating area in the heating section;
the third deviation calculation unit is used for acquiring temperature information of the soaking section and calculating temperature measurement deviation of the strip steel in the soaking section based on the temperature information of the soaking section;
and the fourth deviation calculation unit is used for obtaining the measurement deviation of the outlet thermometer of the heating section based on the temperature prediction deviation of the strip steel in the heating section, the temperature measurement deviation of the strip steel in the heating section and the temperature measurement deviation of the strip steel in the soaking section.
According to a third aspect of embodiments of the present application, there is provided a computer readable storage medium having stored thereon computer instructions which, when run on a computer, cause the computer to perform the method of the first aspect described above.
According to a fourth aspect of embodiments of the present application, there is provided an electronic device comprising a memory and a processor;
the memory is used for storing instructions;
the processor is configured to invoke the instructions in the memory, so that the electronic device performs the method according to the first aspect.
According to the technical scheme, the temperature prediction deviation of the strip steel in the heating section, the temperature measurement deviation of the strip steel in the heating section and the temperature measurement deviation of the strip steel in the soaking section are utilized to calculate and obtain the measurement deviation of the outlet thermometer of the heating section, so that the problem that the measurement accuracy of the strip steel thermometer of the heating section is difficult to evaluate is solved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application. It is evident that the drawings in the following description are only some embodiments of the present application and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art. In the drawings:
FIG. 1 is a flow chart of a method for evaluating the measurement deviation of a heating section strip thermometer according to an embodiment of the application;
FIG. 2 shows a schematic diagram of a heating section according to one embodiment of the application;
FIG. 3 illustrates a schematic diagram of a heating zone according to one embodiment of the present application;
FIG. 4 shows a block diagram of a heating section strip thermometer measurement bias evaluation device in accordance with one embodiment of the present application;
fig. 5 shows a schematic diagram of a computer system suitable for use in implementing an embodiment of the application.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the application. One skilled in the relevant art will recognize, however, that the application may be practiced without one or more of the specific details, or with other methods, components, devices, steps, etc. In other instances, well-known methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the application.
The block diagrams depicted in the figures are merely functional entities and do not necessarily correspond to physically separate entities. That is, the functional entities may be implemented in software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor devices and/or microcontroller devices.
The flow diagrams depicted in the figures are exemplary only, and do not necessarily include all of the elements and operations/steps, nor must they be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the order of actual execution may be changed according to actual situations.
It should be noted that the terms "first," "second," and the like in the description and claims of the present application and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the objects so used may be interchanged where appropriate such that the embodiments of the application described herein may be implemented in other sequences than those illustrated or otherwise described.
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.
Referring to fig. 1, a flow chart of a method for evaluating the measurement deviation of a heating section strip thermometer according to an embodiment of the present application is shown.
As shown in fig. 1, a method for evaluating the measurement deviation of a heating section strip steel thermometer is shown, which specifically includes steps S100 to S400.
And S100, correcting the heat load output of the heating section burner, obtaining the predicted temperature of the strip steel in the heating section after the correction of the heating section burner, and calculating the temperature predicted deviation of the strip steel in the heating section based on the predicted temperature.
As shown in fig. 2, the heating section includes 1 to k heating regions, and the strip steel sequentially passes through the heating region 1, the heating region 2, the heating regions 3 and …, the heating region k-1 and the heating region k in the heating section and is then output; as shown in fig. 3, a plurality of radiant tubes are provided in each heating zone, and burners are provided in the radiant tubes, and are main tools for heating the strip steel in the heating section, and may be damaged due to long-time operation. Since the damaged burner cannot provide the heat load output, when calculating the heat load output of the heating section burner, the heat load output of the heating section burner needs to be corrected so as to avoid the problem of incorrect heat load output caused by the damaged burner. The corrected burner output is a real heat load output, and based on the real heat load output, the temperature of the strip steel in the heating section can be predicted, so that the temperature prediction deviation of the strip steel in the heating section is obtained.
In some possible embodiments, the correcting the heat load output of the heating section burner to obtain the predicted temperature of the strip steel after the correction of the heating section burner in the heating section includes:
correcting the heat load output of the burners of the heating section based on the number of damaged burners in the heating section;
Calculating to obtain the predicted temperature of the strip steel in the corrected heating section by using a formula (1) based on the heat load output of the corrected heating section burner;
in formula (1), stript RTF_corr The predicted temperature of the strip steel in the corrected heating section is set at the temperature of DEG C; p (P) HD_corr For the corrected heat load output of the heating section burner,%; w (w) ref Designing a standard width mm for the annealing furnace; v FHL Designing maximum speed, m/min for the annealing furnace; w (w) F The width of the strip steel is mm; thk F The thickness of the strip steel is mm; v F The actual running speed of the strip steel in the annealing furnace is m/min; a, a ref For the change rate of the reference thickness along with the annealing temperature, the mm/DEG C is generally-0.0001-0.0090; b ref The standard thickness of the strip steel is mm, and is generally 0.2-6.
The maximum design speed of the annealing furnace in the embodiment refers to the maximum design running speed of the strip steel in the annealing furnace.
It is understood that the annealing furnace design reference width and the annealing furnace design maximum speed can be obtained by directly acquiring parameters when the annealing furnace is designed and built; the width of the strip steel, the thickness of the strip steel, the actual running speed of the strip steel in the annealing furnace, the change rate of the reference thickness along with the annealing temperature and the reference thickness of the strip steel can be directly obtained in the actual production process of the strip steel.
In some possible embodiments, the modifying the heat load output of the heating segment burner based on the number of damaged burners in the heating segment comprises:
obtaining the number of damaged burners in the heating section;
based on the number of damaged burners, correcting the heat load output of the heating section burners by using a formula (2);
in the formula (2), P HD_corr For the corrected heat load output of the heating section burner,%; w (W) j The total power of the j-th row of burners is kw; p (P) j Heat load output for column j,%; n (N) burn_j The number of the burners in the j-th row is one; n (N) NG_burn_j The number of the fault burners in the j-th row is one; j is the number of burner columns.
It will be appreciated that in the heating section the radiant tubes are arranged in an array, and thus the burners disposed inside the radiant tubes are correspondingly arranged in an array.
In the embodiment, the heat load output of the heating section burner is corrected by removing the damaged burner, so that the authenticity of the heat load output of the heating section burner is ensured.
In some possible embodiments, the calculating the predicted deviation of the temperature of the strip steel in the heating section based on the predicted temperature includes:
obtaining a temperature measured value of the strip steel in a heating section;
calculating the temperature prediction deviation of the strip steel in the heating section by using a formula (3) based on the temperature measured value of the strip steel in the heating section;
dif StripT_RTF ＝StripT RTF_cor ―StripT RTF_pv ； (3)
In the formula (3), dif StripT_RTF Predicting deviation for the temperature of the strip steel in the heating section; stripT (StripT) RTF_corr The predicted temperature of the corrected heating section of the strip steel is obtained; stripT (StripT) RTF_pv Is a temperature measurement of the strip steel in the heating section.
It will be appreciated that the temperature measurements of the strip in the heating section are obtained by means of a temperature measuring device such as a thermometer or pyrometer.
With continued reference to fig. 1, step S200 obtains temperature information of each heating area in the heating section, and calculates a temperature measurement deviation of the strip steel in the heating section based on the temperature information of each heating area in the heating section.
It will be appreciated that the strip is heated to the temperature of the current heating zone after passing through the heating zone, for example, 50 c, and then the strip is heated to 50 c as soon as the strip passes through the heating zone; according to the temperature information of each heating area, the deviation between the actual temperature and the measured temperature of the strip steel after passing through a plurality of heating areas can be known.
In some possible embodiments, the step S200 specifically includes:
acquiring an average value of temperature set values of all heating areas in the heating section and an average value of temperature measured values;
calculating the temperature measurement deviation of the strip steel in the heating section by using a formula (4) based on the average value of the temperature set values and the average value of the temperature measured values of each heating area in the heating section;
In the formula (4), dif ZoneT_RTF Measuring deviation of the temperature of the strip steel in the heating section and controlling the temperature; zoneT sp The average value of the temperature set value of each heating area of the heating section is set at DEG C; zoneT pv Average value of temperature measurement value of each heating area of the heating section, DEG C; stripT (StripT) RTF_pv Is a temperature measurement value of the strip steel in the heating section, and is in DEG C.
With continued reference to fig. 1, step S300 obtains temperature information of the soaking section, and calculates a temperature measurement deviation of the strip steel in the soaking section based on the temperature information of the soaking section.
It can be understood that the soaking section is mainly used for guaranteeing the uniformity of the temperature of the strip steel, the soaking section is adjacent to the heating section, the strip steel enters the soaking section after being heated by the heating section, and the temperature of the strip steel just in the soaking section, namely the temperature of the strip steel when being output from the outlet of the heating section, so that the temperature measurement deviation of the strip steel in the soaking section has a certain influence on the calculation of the deviation of the thermometer at the outlet of the heating section.
In some possible embodiments, the step S300 specifically includes:
acquiring a temperature measurement value of the strip steel in the soaking section, and calculating to obtain a temperature measurement deviation of the strip steel in the soaking section by using a formula (5) based on the temperature measurement value of the strip steel in the soaking section;
dif ZoneT_SF ＝ZoneT SF_pv ―StripT RTF_pv ； (5)
in formula (5), dif ZoneT_SF The temperature measurement deviation of the strip steel in the soaking section is carried out at the temperature of the strip steel; zoneT SF_pv Is a temperature measurement value of the soaking section, and is in DEG C; stripT (StripT) RTF_pv Is a temperature measurement value of the strip steel in the heating section, and is in DEG C.
With continued reference to fig. 1, step S400 obtains a measurement deviation of the outlet thermometer of the heating section based on the predicted deviation of the temperature of the strip steel in the heating section, the measurement deviation of the temperature of the strip steel in the heating section, and the measurement deviation of the temperature of the strip steel in the soaking section.
In some possible embodiments, the step S400 includes:
calculating to obtain the measuring deviation of the outlet thermometer of the heating section by utilizing a formula (6) based on the temperature predicting deviation of the strip steel in the heating section, the temperature measuring deviation of the strip steel in the heating section and the temperature measuring deviation of the strip steel in the soaking section;
in the formula (6), dif RTF_PY Measuring deviation for a heating section outlet thermometer; dif (dif) StripT_RTF Predicting deviation for the temperature of the strip steel in the heating section; dif (dif) ZoneT_RTF Measuring deviation for the temperature of the strip steel in the heating section; dif (dif) ZoneT_SF Measuring deviation for the temperature of the strip steel in the soaking section; k (k) StripT_RTF The weight proportion of the predicted deviation of the temperature of the strip steel in the heating section to the measured deviation of the outlet thermometer of the heating section is 0.5-1; k (k) ZoneT_RTF Taking 0.5-1 weight proportion of the temperature measurement deviation of the strip steel in the heating section to the measurement deviation of the outlet thermometer of the heating section; k (k) ZoneT_SF The weight proportion of the temperature measurement deviation of the strip steel in the soaking section to the measurement deviation of the outlet thermometer of the heating section is 0.5-1.
It can be understood that the predicted deviation of the temperature of the strip steel in the heating section is from the prediction angle, the measured deviation of the temperature of the strip steel in the heating section and the measured deviation of the temperature of the strip steel in the soaking section are from the real measurement angle, in this embodiment, the measured deviation of the outlet thermometer of the heating section is calculated from the three angles, and three deviation weight ratios are respectively commissioned in the calculation process, so as to further accurately calculate the measured deviation of the outlet thermometer of the heating section.
Next, a specific application case is provided.
Take the first Beijing Tang Lengga 2230 continuous annealing vertical annealing furnace as an example.
The heating section is divided into a heating section 1 and a heating section 2, and a pyrometer TE01 is arranged at the inlet of the heating section 1; two pyrometers, TE02 and TE03 respectively, were disposed at the outlet of the heating 2-stage furnace chamber, and one pyrometer, TE04, was disposed at the outlet of the soaking stage.
The heating section is totally provided with 15 thermocouples for measuring the temperature of the area of the heating section; the soaking section was equipped with 2 thermocouples in total for measuring the temperature in the soaking section area.
StripT RTF_pv Is a measurement of the pyrometer TE 03; zoneT SF_pv Is a thermocouple ZoneT SF_pv1 And ZoneT SF_pv2 Average value of the measured values; zoneT pv Is a thermocouple ZoneT SF_pv1 ～ZoneT SF_pv15 Average value of the measured values; zoneT sp The average value of the temperature set value of each heating area of the heating section is related to the thickness, width, running speed and annealing temperature set value of the strip steel.
2230 continuously annealing to produce 2.04 x 1740mm strip steel, 119.6m/min furnace zone speed, 810 deg.C heating zone temperature set point, and thermometer measuring value strip T RTF_pv 815.0 ℃.
1. And correcting the heat load output of the heating section burner.
Total power W of j-th row of burners j Heat load output P of j-th column j Number of j-th row burners N burn_j Number of faulty burners in jth column N burn_j See table 1. The heat load output P of the corrected heating section burner is obtained by carrying out the following formula (2) HD_corr 89.96%.
TABLE 1 number and power of burners in each row of the first Steel Tang 2230 continuous annealing heating section
2. And obtaining the predicted temperature of the strip steel in the heating section after the correction of the burner of the heating section.
It is known that: annealing furnace design reference width w ref 1500mm; maximum speed v of annealing furnace design F_HL 420m/min; width w of strip steel F 1740mm; thickness thk of strip steel F 2.04mm; actual running speed v in strip steel furnace F 119.6m/min. Rate of change of reference thickness with annealing temperature a ref Is-0.002008 mm/DEG C; reference thickness b of strip steel ref 2.29286mm; the obtained heat load output of the corrected heating section burner is carried into the formula (1) to obtain the predicted temperature strip of the strip steel in the heating section after the correction of the heating section burner RTF_corr The method comprises the following steps: 768.76 ℃.
3. And calculating the temperature prediction deviation of the strip steel in the heating section.
Known heating zone temperature measurement Stript RTF_pv According to the predicted temperature StripT of the strip steel in the heating section after the correction of the obtained heating section burner at 815.0 DEG C RTF_corr At 768.76 ℃, bringing into a formula (3) to obtain the temperature prediction deviation dif of the strip steel in the heating section StripT_RTF Is-46.24 ℃.
4. And calculating the temperature measurement deviation of the strip steel in the heating section.
Average value ZoneT of temperature set value of each heating area of heating section sp And an average value ZoneT of the temperature measurements of each heating zone of the heating section pv As shown in Table 2, the temperature measurement deviation dif of the strip steel in the heating section is obtained by taking the temperature measurement deviation dif into the formula (4) ZoneT_RTF 15.45 ℃.
TABLE 2 temperature detail of the first Steel Beijing Tang 2230 continuous annealing heating section and soaking section area
5. And calculating the temperature measurement deviation of the strip steel in the soaking section.
Zone temperature measurement ZoneT for soaking zone SF_pv (see Table 2) and heating zone temperature measurements StripT RTF_pv Carrying out the formula (5) to obtain the temperature measurement deviation dif of the strip steel in the soaking section ZoneT_SF 35.45 ℃.
6. And calculating the measurement deviation of the outlet thermometer of the heating section.
Taking the weight proportion k of the predicted deviation of the temperature of the strip steel in the heating section to the measured deviation of the outlet thermometer of the heating section StripT_RTF The weight proportion dif of the temperature measurement deviation of the strip steel in the heating section to the measurement deviation of an outlet thermometer of the heating section is 0.6 ZoneT_RTF The weight proportion dif of the temperature measurement deviation of the strip steel in the soaking section to the measurement deviation of the outlet thermometer of the heating section is 0.5 ZoneT_SF At 0.5, the temperature of the strip steel in the heating section predicts the deviation dif StripT_RTF Temperature measurement deviation dif of strip steel in heating section ZoneT_RTF Temperature measurement deviation dif of strip steel in heating section ZoneT_RTF And (3) carrying out the process in a formula (6) to obtain the measurement deviation dif of the outlet thermometer of the heating section RTF_PY A value of-1.44 ℃ (where > 0 indicates a higher pyrometer measurement and < 0 indicates a lower measurement).
The following describes an embodiment of the apparatus of the present application, which can be used to perform a method for evaluating the measurement deviation of a heating section strip thermometer in the above embodiment of the present application. For details not disclosed in the embodiments of the apparatus of the present application, please refer to the embodiments of the method of the present application.
Referring to fig. 4, a heating stage strip thermometer measurement deviation evaluating apparatus 400 according to an embodiment of the present application includes: a first deviation calculation unit 401, a second deviation calculation unit 402, a third deviation calculation unit 403, and a fourth deviation calculation unit 404.
The first deviation calculation unit 401 is configured to correct a heat load output of the heating section burner, obtain a predicted temperature of the strip steel in the heating section after the heating section burner is corrected, and calculate a temperature predicted deviation of the strip steel in the heating section based on the predicted temperature; a second deviation calculating unit 402, configured to obtain temperature information of each heating area in the heating section, and calculate a temperature measurement deviation of the strip steel in the heating section based on the temperature information of each heating area in the heating section; a third deviation calculating unit 403, configured to obtain temperature information of the soaking section, and calculate a temperature measurement deviation of the strip steel in the soaking section based on the temperature information of the soaking section; and a fourth deviation calculating unit 404, configured to obtain the measurement deviation of the outlet thermometer of the heating section based on the predicted deviation of the temperature of the strip steel in the heating section, the measurement deviation of the temperature of the strip steel in the heating section, and the measurement deviation of the temperature of the strip steel in the soaking section.
In some possible embodiments, the first deviation calculation unit 401 includes: the correction unit is used for correcting the heat load output of the burners of the heating section based on the number of the damaged burners in the heating section; the first calculation unit is used for calculating the predicted temperature of the strip steel in the corrected heating section by using the formula (1) based on the heat load output of the corrected heating section burner;
in formula (1), stript RTF_corr The predicted temperature of the corrected heating section of the strip steel is obtained; p (P) HD_corr Outputting the corrected heat load of the heating section burner; w (w) ref Designing a reference width for the annealing furnace; v FHL Designing maximum speed for the annealing furnace; w (w) F Is the width of the strip steel; thk F Is the thickness of the strip steel; v F The actual running speed of the strip steel in the annealing furnace; a, a ref The reference thickness is the change rate of the annealing temperature; b ref Is the reference thickness of the strip steel.
In some possible embodiments, the first deviation calculating unit 401 further includes: the acquisition unit is used for acquiring the number of damaged burners in the heating section; the second calculation unit corrects the heat load output of the heating section burner by using the formula (2) based on the number of damaged burners;
in the formula (2), P HD_corr Outputting the corrected heat load of the heating section burner; w (W) j The total power of the j-th row of burners; p (P) j Outputting heat load for the j-th column; n (N) burn_j The number of the j-th row of burners; n (N) NG_burn_j And j is the number of the fault burners in the j th row, and j is the number of the burners.
In some possible embodiments, the second deviation calculation unit 402 is configured to: acquiring an average value of temperature set values of all heating areas in the heating section and an average value of temperature measured values; calculating the temperature measurement deviation of the strip steel in the heating section by using a formula (4) based on the average value of the temperature set values and the average value of the temperature measured values of each heating area in the heating section;
in the formula (4), dif ZoneT_RTF Measuring deviation for the temperature of the strip steel in the heating section; zoneT sp An average value of the temperature setting value for each heating zone of the heating section; zoneT pv An average value of the temperature measurement value for each heating region of the heating section; stripT (StripT) RTF_pv Is a temperature measurement of the strip steel in the heating section.
In some possible embodiments, the third deviation calculation unit 403 is configured to: acquiring a temperature measurement value of the strip steel in the soaking section, and calculating to obtain a temperature measurement deviation of the strip steel in the soaking section by using a formula (5) based on the temperature measurement value of the strip steel in the soaking section;
dif ZoneT_SF ＝ZoneT SF_pv ―StripT RTF_pv ； (5)
in formula (5), dif ZoneT_SF Measuring deviation for the temperature of the strip steel in the soaking section; zoneT SF_pv Is a temperature measurement value of the soaking section; stripT (StripT) RTF_pv Is a temperature measurement of the strip steel in the heating section.
In some possible embodiments, the fourth deviation calculation unit 404 is configured to: calculating to obtain the measuring deviation of the outlet thermometer of the heating section by utilizing a formula (6) based on the temperature predicting deviation of the strip steel in the heating section, the temperature measuring deviation of the strip steel in the heating section and the temperature measuring deviation of the strip steel in the soaking section;
in the formula (6), dif RTF_PY Measuring deviation for a heating section outlet thermometer; dif (dif) StripT_RTF Predicting deviation for the temperature of the strip steel in the heating section; dif (dif) ZoneT_RTF Measuring deviation for the temperature of the strip steel in the heating section; dif (dif) ZoneT_SF Measuring deviation for the temperature of the strip steel in the soaking section; k (k) StripT_RTF The predicted deviation of the temperature of the strip steel in the heating section accounts for the weight proportion of the measured deviation of the outlet thermometer of the heating section; k (k) ZoneT_RTF The weight proportion of the temperature measurement deviation of the strip steel in the heating section to the measurement deviation of the outlet thermometer of the heating section is calculated; k (k) ZoneT_SF The weight proportion of the temperature measurement deviation of the strip steel in the soaking section to the measurement deviation of the outlet thermometer of the heating section is calculated.
Fig. 5 shows a schematic diagram of a computer system suitable for use in implementing an embodiment of the application.
It should be noted that, the computer system 500 of the electronic device shown in fig. 5 is only an example, and should not impose any limitation on the functions and the application scope of the embodiments of the present application.
As shown in fig. 5, the computer system 500 includes a central processing unit (Central Processing Unit, CPU) 501, which can perform various appropriate actions and processes, such as performing the methods described in the above embodiments, according to a program stored in a Read-Only Memory (ROM) 502 or a program loaded from a storage section 508 into a random access Memory (Random Access Memory, RAM) 503. In the RAM 503, various programs and data required for the system operation are also stored. The CPU 501, ROM 502, and RAM 503 are connected to each other through a bus 504. An Input/Output (I/O) interface 505 is also connected to bus 504.
The following components are connected to the I/O interface 505: an input section 506 including a keyboard, a mouse, and the like; an output portion 507 including a Cathode Ray Tube (CRT), a liquid crystal display (Liquid Crystal Display, LCD), and the like, and a speaker, and the like; a storage portion 508 including a hard disk and the like; and a communication section 509 including a network interface card such as a LAN (Local Area Network ) card, a modem, or the like. The communication section 509 performs communication processing via a network such as the internet. The drive 510 is also connected to the I/O interface 505 as needed. A removable medium 511 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is mounted on the drive 510 as needed so that a computer program read therefrom is mounted into the storage section 508 as needed.
In particular, according to embodiments of the present application, the processes described above with reference to flowcharts may be implemented as computer software programs. For example, embodiments of the present application include a computer program product comprising a computer program embodied on a computer readable medium, the computer program comprising program code for performing the method shown in the flowcharts. In such an embodiment, the computer program may be downloaded and installed from a network via the communication portion 509, and/or installed from the removable media 511. When executed by a Central Processing Unit (CPU) 501, performs the various functions defined in the system of the present application.
It should be noted that, the computer readable medium shown in the embodiments of the present application may be a computer readable signal medium or a computer readable storage medium, or any combination of the two. The computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples of the computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-Only Memory (ROM), an erasable programmable read-Only Memory (Erasable Programmable Read Only Memory, EPROM), flash Memory, an optical fiber, a portable compact disc read-Only Memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In the present application, however, the computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, with the computer-readable program code embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wired, etc., or any suitable combination of the foregoing.
The flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present application. Where each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams or flowchart illustration, and combinations of blocks in the block diagrams or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The units involved in the embodiments of the present application may be implemented by software, or may be implemented by hardware, and the described units may also be provided in a processor. Wherein the names of the units do not constitute a limitation of the units themselves in some cases.
As another aspect, the present application also provides a computer program product or computer program comprising computer instructions stored in a computer readable storage medium. The processor of the computer apparatus reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions so that the computer apparatus performs a heating section strip steel thermometer measurement deviation evaluation method described in the above embodiment.
As another aspect, the present application also provides a computer-readable medium that may be contained in the electronic device described in the above embodiment; or may exist alone without being incorporated into the electronic device. The computer-readable medium carries one or more programs that, when executed by the electronic device, cause the electronic device to implement a heating section strip thermometer measurement deviation evaluation method described in the above embodiment.
It should be noted that although in the above detailed description several modules or units of a device for action execution are mentioned, such a division is not mandatory. Indeed, the features and functions of two or more modules or units described above may be embodied in one module or unit in accordance with embodiments of the application. Conversely, the features and functions of one module or unit described above may be further divided into a plurality of modules or units to be embodied.
From the above description of embodiments, those skilled in the art will readily appreciate that the example embodiments described herein may be implemented in software, or may be implemented in software in combination with the necessary hardware. Thus, the technical solution according to the embodiments of the present application may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (may be a CD-ROM, a U-disk, a mobile hard disk, etc.) or on a network, and includes several instructions to cause a computing device (may be a personal computer, a server, a touch terminal, or a network device, etc.) to perform the method according to the embodiments of the present application.
Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of the application following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the application pertains. It is to be understood that the application is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims (10)

1. The method for evaluating the measurement deviation of the strip steel thermometer in the heating section is characterized by comprising the following steps:
correcting the heat load output of the heating section burner, obtaining the predicted temperature of the strip steel in the heating section after the correction of the heating section burner, and calculating the temperature predicted deviation of the strip steel in the heating section based on the predicted temperature;
acquiring temperature information of each heating area in the heating section, and calculating the temperature measurement deviation of the strip steel in the heating section based on the temperature information of each heating area in the heating section;
acquiring temperature information of a soaking section, and calculating temperature measurement deviation of the strip steel in the soaking section based on the temperature information of the soaking section;
and obtaining the measurement deviation of the outlet thermometer of the heating section based on the temperature prediction deviation of the strip steel in the heating section, the temperature measurement deviation of the strip steel in the heating section and the temperature measurement deviation of the strip steel in the soaking section.
2. The method of claim 1, wherein the modifying the heat load output of the heating segment burner to obtain the predicted temperature of the strip steel in the heating segment after the modification of the heating segment burner comprises:
correcting the heat load output of the burners of the heating section based on the number of damaged burners in the heating section;
calculating to obtain the predicted temperature of the strip steel in the corrected heating section by using a formula (1) based on the heat load output of the corrected heating section burner;
In formula (1), stript RTF_corr The predicted temperature of the corrected heating section of the strip steel is obtained; p (P) HD_corr Outputting the corrected heat load of the heating section burner; w (w) ref Designing a reference width for the annealing furnace; v FHL Designing maximum speed for the annealing furnace; w (w) F Is the width of the strip steel; tjk F Is the thickness of the strip steel; v F The actual running speed of the strip steel in the annealing furnace; a, a ref The reference thickness is the change rate of the annealing temperature; b ref Is the reference thickness of the strip steel.
3. The method of claim 2, wherein said modifying the heat load output of the heating segment burners based on the number of damaged burners in the heating segment comprises:
obtaining the number of damaged burners in the heating section;
based on the number of damaged burners, correcting the heat load output of the heating section burners by using a formula (2);
in the formula (2), P HD_corr Outputting the corrected heat load of the heating section burner; w (W) j The total power of the j-th row of burners; p (P) j Is the j th heatLoad output; n (N) burn_j The number of the j-th row of burners; n (N) NG_burn_j And j is the number of the fault burners in the j th row, and j is the number of the burners.
4. The method of claim 2, wherein calculating a predicted deviation of the temperature of the strip in the heating section based on the predicted temperature comprises:
obtaining a temperature measured value of the strip steel in a heating section;
Calculating the temperature prediction deviation of the strip steel in the heating section by using a formula (3) based on the temperature measured value of the strip steel in the heating section;
dif StripT_RTF ＝StripT RTF_cor ―StripT RTF_pv the method comprises the steps of carrying out a first treatment on the surface of the (3) In the formula (3), dif StripT_RTF Predicting deviation for the temperature of the strip steel in the heating section; stripT (StripT) RTF_corr The predicted temperature of the corrected heating section of the strip steel is obtained; stripT (StripT) RTF_pv Is a temperature measurement of the strip steel in the heating section.
5. The method of claim 4, wherein obtaining temperature information for each heating region in the heating section, and calculating a temperature measurement deviation of the strip steel in the heating section based on the temperature information for each heating region in the heating section, comprises:
acquiring an average value of temperature set values of all heating areas in the heating section and an average value of temperature measured values;
calculating the temperature measurement deviation of the strip steel in the heating section by using a formula (4) based on the average value of the temperature set values and the average value of the temperature measured values of each heating area in the heating section;
in the formula (4), dif ZoneT_RTF Measuring deviation for the temperature of the strip steel in the heating section; zoneT sp An average value of the temperature setting value for each heating zone of the heating section; zoneT pv Temperature measurement for each heating zone of a heating sectionAverage value of the magnitude; stripT (StripT) RTF_pv Is a temperature measurement of the strip steel in the heating section.
6. The method of claim 5, wherein the obtaining temperature information of the soaking section, and calculating a temperature measurement deviation of the strip steel in the soaking section based on the temperature information of the soaking section, comprises:
acquiring a temperature measurement value of the strip steel in the soaking section, and calculating to obtain a temperature measurement deviation of the strip steel in the soaking section by using a formula (5) based on the temperature measurement value of the strip steel in the soaking section;
dif ZoneT_SF ＝ZoneT SF_pv ―StripT RTF_pv ； (5)
in formula (5), dif ZoneT_SF Measuring deviation for the temperature of the strip steel in the soaking section; zoneT SF_pv Is a temperature measurement value of the soaking section; stripT (StripT) RTF_pv Is a temperature measurement of the strip steel in the heating section.
7. The method of claim 6, wherein the obtaining the heating section outlet thermometer measurement bias based on the predicted bias of the temperature of the strip in the heating section, the measured bias of the temperature of the strip in the heating section, and the measured bias of the temperature of the strip in the soaking section comprises:
calculating to obtain the measuring deviation of the outlet thermometer of the heating section by utilizing a formula (6) based on the temperature predicting deviation of the strip steel in the heating section, the temperature measuring deviation of the strip steel in the heating section and the temperature measuring deviation of the strip steel in the soaking section;
in the formula (6), dif RTF_PY Measuring deviation for a heating section outlet thermometer; dif (dif) StripT_RTF Predicting deviation for the temperature of the strip steel in the heating section; dif (dif) ZoneT_RTF Measuring deviation for the temperature of the strip steel in the heating section; dif (dif) ZoneT_SF Measuring deviation for the temperature of the strip steel in the soaking section; k (k) StripT_RTF For heating strip steelThe temperature prediction deviation of the section accounts for the weight proportion of the measurement deviation of the outlet thermometer of the heating section; k (k) ZoneT_RTF The weight proportion of the temperature measurement deviation of the strip steel in the heating section to the measurement deviation of the outlet thermometer of the heating section is calculated; k (k) ZoneT_SF The weight proportion of the temperature measurement deviation of the strip steel in the soaking section to the measurement deviation of the outlet thermometer of the heating section is calculated.
8. The utility model provides a heating section belted steel thermometer measurement deviation evaluation device which characterized in that includes:
the first deviation calculation unit is used for correcting the heat load output of the heating section burner, obtaining the predicted temperature of the strip steel in the heating section after the heating section burner is corrected, and calculating the temperature predicted deviation of the strip steel in the heating section based on the predicted temperature;
the second deviation calculation unit is used for obtaining the temperature information of each heating area in the heating section and calculating the temperature measurement deviation of the strip steel in the heating section based on the temperature information of each heating area in the heating section;
the third deviation calculation unit is used for acquiring temperature information of the soaking section and calculating temperature measurement deviation of the strip steel in the soaking section based on the temperature information of the soaking section;
And the fourth deviation calculation unit is used for obtaining the measurement deviation of the outlet thermometer of the heating section based on the temperature prediction deviation of the strip steel in the heating section, the temperature measurement deviation of the strip steel in the heating section and the temperature measurement deviation of the strip steel in the soaking section.
9. A computer readable storage medium having stored thereon computer instructions which, when run on a computer, cause the computer to perform the method of any of claims 1-7.
10. An electronic device comprising a memory and a processor;
the memory is used for storing instructions;
the processor for invoking instructions in the memory to cause the electronic device to perform the method of any of claims 1-7.
CN202310528538.9A 2023-05-11 2023-05-11 Method and device for evaluating measurement deviation of strip steel thermometer in heating section Pending CN116992579A (en)

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