CN115615193A - Heating furnace temperature control method and device and electronic equipment - Google Patents

Heating furnace temperature control method and device and electronic equipment Download PDF

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Publication number
CN115615193A
CN115615193A CN202211224953.7A CN202211224953A CN115615193A CN 115615193 A CN115615193 A CN 115615193A CN 202211224953 A CN202211224953 A CN 202211224953A CN 115615193 A CN115615193 A CN 115615193A
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China
Prior art keywords
temperature
heating section
target
heated
target heating
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CN202211224953.7A
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Chinese (zh)
Inventor
曹恒
王蕾
吕坤
陈军
陈俊男
于浩淼
唐婧
刘冬
张华文
王威
尚鸣明
罗旭烨
李金保
刘志民
王伦
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Beijing Shougang Co Ltd
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Beijing Shougang Co Ltd
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Priority to CN202211224953.7A priority Critical patent/CN115615193A/en
Publication of CN115615193A publication Critical patent/CN115615193A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B17/00—Furnaces of a kind not covered by any preceding group
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D19/00—Arrangements of controlling devices

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Heat Treatment Processes (AREA)

Abstract

The application relates to the technical field of hot rolling heating furnaces, and discloses a method and a device for controlling the temperature of a heating furnace and electronic equipment. The method comprises the following steps: acquiring slab information of a plurality of slabs to be heated; respectively calculating the comprehensive weight of each plate blank to be heated in the target heating section based on the plate blank information of the plate blanks to be heated in each target heating section in the heating furnace, wherein the comprehensive weight is used for representing the importance degree of the corresponding plate blank in the target heating section, and the target heating section is any one of a plurality of heating sections in the heating furnace; calculating the set temperature of a target heating section based on the comprehensive weight distribution of a plurality of slabs to be heated in the target heating section; and acquiring the set temperature of the target heating section, and controlling the temperature of the target heating section in the actual production process by referring to the set temperature of the target heating section. The technical scheme that this application provided can the reasonable control heating furnace temperature of each heating section in the heating furnace, avoids appearing the uneven condition of slab heating.

Description

Heating furnace temperature control method and device and electronic equipment
Technical Field
The application relates to the technical field of hot rolling heating furnaces, and discloses a method and a device for controlling the temperature of a heating furnace and electronic equipment.
Background
In hot rolling production, the heating quality of a plate blank of a heating furnace is a guarantee for determining the rolling stability of a rolling line and the level of high-quality products. The furnace temperature setting method aims at furnace temperature setting with reasonable difficult rolling specification and limit specification in different schedules, and is the premise of ensuring the heating quality. The heating furnace generally comprises a preheating section, a first heating section, a second heating section and a soaking section, the furnace temperature setting generally only considers slabs in the heating section, and when the plan list has large high-low temperature transition span and diversified slab steel types, the problem that the slabs in the heating section cannot be heated in time or at a too high heating rate is only considered, so that the slabs are not heated uniformly and the problem that the rolling line heating quality requirement cannot be met is finally caused. Meanwhile, the operator sets the furnace temperature according to personal experience, which causes deviation of heating conditions of different shifts, brings risks to production and rolling stability, and is very unfavorable for establishing advanced production modes such as unmanned factories.
Therefore, how to reasonably control the furnace temperature of each heating section in the heating furnace and improve the heating quality of the heating plate blank of the heating furnace is a technical problem to be solved urgently at present.
Disclosure of Invention
The embodiment of the application provides a method and a device for controlling the temperature of a heating furnace and electronic equipment. The furnace temperature of each heating section in the heating furnace can be reasonably controlled, the heating quality of the heating plate blank of the heating furnace is improved, and the condition that the plate blank is not uniformly heated is avoided.
Other features and advantages of the present application will be apparent from the following detailed description, or may be learned by practice of the application.
According to a first aspect of embodiments of the present application, there is provided a method for controlling a temperature of a heating furnace, the method including: acquiring slab information of a plurality of slabs to be heated; respectively calculating the comprehensive weight of each blank to be heated in the target heating section based on the blank information of the plurality of blanks to be heated in each target heating section in the heating furnace, wherein the comprehensive weight is used for representing the importance degree of the corresponding blank in the target heating section, and the target heating section is any one of the plurality of heating sections in the heating furnace; calculating the set temperature of the target heating section based on the comprehensive weight distribution of the multiple blanks to be heated in the target heating section; and acquiring the set temperature of the target heating section, and controlling the temperature of the target heating section in the actual production process by referring to the set temperature of the target heating section.
In an embodiment of the application, based on the foregoing solution, the calculating, based on the slab information of the multiple slabs to be heated, the comprehensive weight of each slab to be heated in the target heating zone respectively includes: determining steel grade weights, position weights and necessary furnace temperature weights of the plurality of slabs to be heated based on slab information of the plurality of slabs to be heated; and calculating the comprehensive weight of each plate blank to be heated in the target heating section based on the steel grade weight, the position weight and the necessary furnace temperature weight of the plurality of plate blanks to be heated.
In an embodiment of the present application, based on the foregoing solution, the determining the steel grade weight, the position weight, and the necessary furnace temperature weight of the plurality of slabs to be heated based on the slab information of the plurality of slabs to be heated includes: according to the type of steel of each plate blank to be heated, looking up a table to obtain the weight of the steel of each plate blank to be heated; respectively setting a distance of an advanced entering section and a distance of a delayed exiting section before and after the target heating section, wherein the distance of the advanced entering section and the distance of the delayed exiting section are used for increasing the calculation range of the target heating section; calculating the position weight of each plate blank to be heated based on the relative position of each plate blank to be heated and the target heating section, the distance of the section entering in advance and the distance of the section leaving behind; acquiring the necessary furnace temperature and the slab temperature of each slab to be heated in the target heating section, and calculating the necessary temperature deviation and the end target temperature deviation of each slab to be heated in the target heating section on the basis of the necessary furnace temperature and the slab temperature; and calculating the necessary furnace temperature weight of each blank to be heated in the target heating section based on the necessary temperature deviation and the target temperature deviation at the end of the section.
In an embodiment of the application, based on the foregoing scheme, the calculating, based on the steel grade weights, the position weights, and the necessary furnace temperature weights of the multiple slabs to be heated, an integrated weight of each slab to be heated in the target heating zone includes: and calculating the product of the steel grade weight, the position weight and the necessary furnace temperature weight of the blank to be heated in the target heating section aiming at each blank to be heated and the target heating section, and taking the product as the comprehensive weight of the blank to be heated in the target heating section.
In an embodiment of the application, based on the foregoing solution, the calculating the set temperature of the target heating section based on the comprehensive weight distribution of the multiple blanks to be heated in the target heating section includes: calculating the sum of products of necessary furnace temperature and comprehensive weight of each plate blank to be heated in the target heating section; summing the comprehensive weights of all slabs to be heated in the target heating section to obtain a comprehensive weight sum; and calculating the ratio of the sum of the products to the sum of the comprehensive weights, and taking the ratio as the set temperature of the target heating section.
In an embodiment of the application, based on the foregoing solution, the obtaining the set temperature of the target heating section, and controlling the temperature of the target heating section in the actual production process with reference to the set temperature of the target heating section includes: acquiring the set temperature of the target heating section, and calculating a first difference value between the set temperature of the target heating section and the set temperature of the adjacent heating section of the target heating section; if the first difference value is larger than a first set threshold value, controlling the adjacent heating sections of the target heating section to be heated to a target temperature in advance, wherein the target temperature is the temperature in the actual production process; judging whether the target temperature meets the condition of temperature rise in advance; and if the temperature does not meet the early heating condition, setting a new target temperature and controlling the adjacent heating sections of the target heating section to be heated to the new target temperature in advance.
In an embodiment of the application, based on the foregoing scheme, the determining whether the target temperature meets an early temperature increase condition includes: calculating a second difference value between the target temperature and the set temperature of the adjacent heating section of the target heating section; and if the second difference is larger than a second set threshold, judging that the target temperature does not accord with the early temperature rise condition.
In an embodiment of the application, based on the foregoing solution, the setting a new target temperature and controlling the adjacent heating sections of the target heating section to warm up to the new target temperature in advance includes: summing the set temperature of the adjacent heating section of the target heating section and the second set threshold value, and taking the value obtained by summation as a new target temperature; and controlling the temperature of the adjacent heating sections of the target heating section to be increased to a new target temperature in advance.
According to a second aspect of embodiments of the present application, there is provided a control apparatus for a temperature of a heating furnace, the apparatus including: an acquisition unit configured to acquire slab information of a plurality of slabs to be heated; the first calculation unit is used for calculating the comprehensive weight of each blank to be heated in the target heating section on the basis of the blank information of the plurality of blanks to be heated in each target heating section in the heating furnace, wherein the comprehensive weight is used for representing the importance degree of the corresponding blank in the target heating section, and the target heating section is any one of the plurality of heating sections in the heating furnace; a second calculation unit, configured to calculate a set temperature of the target heating section based on a comprehensive weight distribution of the multiple blanks to be heated in the target heating section; and the control unit is used for acquiring the set temperature of the target heating section and controlling the temperature of the target heating section in the actual production process by referring to the set temperature of the target heating section.
According to a third aspect of embodiments of the present application, there is provided an electronic device, which includes one or more processors and one or more memories, where at least one program code is stored in the one or more memories, and the at least one program code is loaded by the one or more processors and executed to implement the method for controlling the temperature of the heating furnace according to any of the above embodiments.
In the technical scheme that this application provided, through the slab information that acquires a plurality of hot plate base of treating, and based on the slab information of a plurality of hot plate bases of treating calculates the comprehensive weight of each hot plate base of treating in the target heating section respectively, comprehensive weight is used for the characterization to correspond the slab and is in important degree in the target heating section, the target heating section does arbitrary one in a plurality of heating sections in the heating furnace, and based on a plurality of hot plate bases of treating are in comprehensive weight distribution in the target heating section calculates the settlement temperature of target heating section. If the comprehensive weight of a slab in the target heating section is larger, the higher the importance of the slab in the target heating section is, namely, the greater the correlation between the set temperature of the slab and the set temperature of the target heating section is. Based on this, the heating quality of the high-demand slab in the heating furnace can be improved to a certain extent. The temperature of the target heating section in the actual production process is controlled by acquiring the set temperature of the target heating section and referring to the set temperature of the target heating section, namely, the actual production temperature of each heating section is adjusted by referring to the set temperature of the target heating section. Consequently, the scheme that this application provided can be suitable the temperature of each heating section in the control heating furnace to improve the heating quality of heating slab in the heating furnace to a certain extent, avoid appearing causing the uneven condition of slab heating because of the slab heating temperature is improper.
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.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
fig. 1 shows a flowchart of a method of controlling a temperature of a heating furnace in an embodiment of the present application;
fig. 2 is a block diagram showing a control device of the temperature of the heating furnace in the embodiment of the present application;
FIG. 3 illustrates a schematic structural diagram of a computer system suitable for use in implementing the electronic device of an embodiment of the present application.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different 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 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 subject matter of the present application can be practiced without one or more of the specific details, or with other methods, components, devices, steps, and so forth. In other instances, well-known methods, devices, implementations, or operations have not been shown or described in detail to avoid obscuring aspects of the application.
The flowcharts shown in the figures are illustrative only and do not necessarily include all of the contents and operations/steps, nor do they necessarily have to 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 actual execution sequence may be changed according to the actual situation.
The schematic diagrams shown in the figures are only intended to generally describe or represent the shape, relative size, relationship or relationship of objects to one another, and the actual objects do not necessarily have to be the same as the shape, relative size, relationship or relationship of objects to one another as shown in the figures.
The block diagrams shown in the figures are functional entities only and do not necessarily correspond to physically separate entities. I.e. these functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor means and/or microcontroller means.
It should be noted that: reference herein to "a plurality" means two or more. "and/or" describes the association relationship of the associated object, indicating that there may be three relationships, for example, a and/or B may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
It is noted that the terms first, second and the like in the description and claims of the present application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the objects so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in other sequences than those illustrated or described herein.
The implementation details of the technical solution of the embodiment of the present application are set forth in detail below:
fig. 1 shows a flowchart of a method for controlling a temperature of a heating furnace in the embodiment of the present application.
As shown in fig. 1, the method for controlling the temperature of the heating furnace at least includes steps 110 to 170.
The following will describe steps 110 to 170 shown in fig. 1 in detail:
in step 110, slab information of a plurality of slabs to be heated is acquired.
In this application, acquire the slab information of a plurality of hot plate billets of treating, the slab information includes slab steel grade, slab size, income stove temperature, temperature of leaving a stove, total in stove time at least.
With reference to fig. 1, in step 130, for each target heating zone in the heating furnace, based on slab information of the multiple slabs to be heated, a comprehensive weight of each slab to be heated in the target heating zone is calculated, where the comprehensive weight is used to represent an importance degree of a corresponding slab in the target heating zone, and the target heating zone is any one of the multiple heating zones in the heating furnace.
With continued reference to fig. 1, in step 150, a set temperature of the target heating section is calculated based on the integrated weight distribution of the multiple blanks to be heated in the target heating section.
With continued reference to fig. 1, in step 170, the set temperature of the target heating section is obtained, and the temperature of the target heating section in the actual production process is controlled with reference to the set temperature of the target heating section.
In this application, obtain the set temperature of target heating section, and refer to the set temperature of target heating section, through the comparison the difference of the set temperature of target heating section is right the temperature of target heating section in actual production process is adjusted.
In an embodiment of the application, the calculating, based on the slab information of the multiple slabs to be heated, a comprehensive weight of each slab to be heated in the target heating zone includes: determining steel grade weights, position weights and necessary furnace temperature weights of the plurality of slabs to be heated based on slab information of the plurality of slabs to be heated; and calculating the comprehensive weight of each plate blank to be heated in the target heating section based on the steel grade weight, the position weight and the necessary furnace temperature weight of the plurality of plate blanks to be heated.
In this application, based on a plurality of steel grade types of slabs to be heated, determine a plurality of steel grade weights of slabs to be heated, based on a plurality of slab sizes of slabs to be heated and total in-furnace time, determine a plurality of position weights of slabs to be heated, based on the out-furnace temperature of a plurality of slabs to be heated, determine the necessary furnace temperature weight of slabs to be heated, and based on the steel grade weights, the position weights and the necessary furnace temperature weight of a plurality of slabs to be heated, calculate the comprehensive weight of each slab to be heated in the target heating section.
In one embodiment of the present application, the determining the steel grade weight, the position weight and the necessary furnace temperature weight of the plurality of slabs to be heated based on the slab information of the plurality of slabs to be heated includes: according to the type of the steel of each plate blank to be heated, looking up a table to obtain the weight of the steel of each plate blank to be heated; respectively setting a distance of an advanced entering section and a distance of a delayed exiting section before and after the target heating section, wherein the distance of the advanced entering section and the distance of the delayed exiting section are used for increasing the calculation range of the target heating section; calculating the position weight of each plate blank to be heated based on the relative position of each plate blank to be heated and the target heating section, the distance of the section entering in advance and the distance of the section leaving behind; acquiring the necessary furnace temperature and the slab temperature of each slab to be heated in the target heating section, and calculating the necessary temperature deviation and the end target temperature deviation of each slab to be heated in the target heating section on the basis of the necessary furnace temperature and the slab temperature; and calculating the necessary furnace temperature weight of each blank to be heated in the target heating section based on the necessary temperature deviation and the target temperature deviation at the end of the section.
In the application, according to the steel type of each plate blank to be heated, the table is looked up to obtain the weight of the steel type of each plate blank to be heated. For example, the code of the steel type of a certain slab is 1, and the weight of the steel type of the slab obtained by table lookup is 1.
In this application, set up respectively around the target heating section and advance into a section distance and delay out a section distance, advance into a section distance with delay out a section distance and be used for the increase the calculation scope of target heating section to based on each wait to heat the slab with the relative position of target heating section calculates each and waits to heat the position weight of slab. For example, if a slab is located in the middle of the target heating section, the slab has a position weight of m, and if a slab is located within the early-in distance of the target heating section, the slab has a position weight of β · [1- (a-B)/C ], or if a slab is located within the late-out distance of the target heating section, the slab has a position weight of γ · [1- (B-D)/E ], where m, β, and γ are set correction coefficients, a is the starting position of the target heating section, B is the current position of the slab, C is the length of the early-in distance, D is the starting position of the adjacent heating section of the target heating section, and E is the length of the late-out distance.
In the method, the necessary furnace temperature and the slab temperature of each slab to be heated in the target heating section are obtained, the slab temperature of each slab to be heated can be determined according to the furnace cavity radiation coefficient and the furnace temperature of the target heating section, the necessary furnace temperature deviation is obtained by calculating the difference between the slab temperature of each slab to be heated and the necessary furnace temperature, the end-of-section target temperature deviation is obtained by calculating the difference between the slab temperature of each slab to be heated and the end-of-section target temperature, the end-of-section target temperature is the temperature which at least needs to be reached when each slab to be heated leaves the target heating section, and the necessary furnace temperature weight of each slab to be heated is obtained according to the necessary furnace temperature deviation and the deviation layer of the end-of-section target temperature deviation.
In an embodiment of the present application, the calculating a comprehensive weight of each slab to be heated in the target heating zone based on the steel grade weight, the position weight, and the necessary furnace temperature weight of the plurality of slabs to be heated includes: and calculating the product of the steel grade weight, the position weight and the necessary furnace temperature weight of the plate blank to be heated in the target heating section aiming at each plate blank to be heated and the target heating section, and taking the product as the comprehensive weight of the plate blank to be heated in the target heating section.
In the present application, for example, if a slab is in the target heating zone and the steel type weight of the slab is 1, the position weight is 1, and the necessary furnace temperature weight is 0.6, the overall weight of the slab is 1 × 0.6=0.6.
In an embodiment of the present application, the calculating the set temperature of the target heating section based on the integrated weight distribution of the multiple blanks to be heated in the target heating section includes: calculating the sum of products of necessary furnace temperature and comprehensive weight of each plate blank to be heated in the target heating section; summing the comprehensive weights of all slabs to be heated in the target heating section to obtain a comprehensive weight sum; and calculating the ratio of the sum of the products to the sum of the comprehensive weights, and taking the ratio as the set temperature of the target heating section.
In the application, each heating slab to be heated in the target heating section is obtained, the calculation range of the target heating section comprises the section-in-advance distance and the section-out delay distance of the target heating section, the necessary furnace temperature and the comprehensive weight of each heating slab to be heated in the target heating section are obtained, the sum of products of the necessary furnace temperature and the comprehensive weight of each heating slab to be heated in the target heating section is calculated, the comprehensive weight of each heating slab to be heated in the target heating section is summed to obtain the sum of the comprehensive weights, the ratio of the sum of the products and the sum of the comprehensive weights is calculated, and the ratio is used as the set temperature of the target heating section.
In the present application, for example, two slabs are in one target heating section, and the integrated weights of the two slabs are 0.6 and 0.65, the necessary furnace temperatures are 1180 ℃ and 1150 ℃, respectively, then the sum of the products of the necessary furnace temperatures and the integrated weights of each slab to be heated in the target heating section is 0.6+ 1180.65 + 1150=1455.5, and the sum of the integrated weights of each slab to be heated in the target heating section is 0.6+0.65=1.25, then the set temperature of the target heating section is 1455.5/1.25=1164.4 ℃.
In an embodiment of the application, the acquiring the set temperature of the target heating section and controlling the temperature of the target heating section in the actual production process with reference to the set temperature of the target heating section includes: acquiring the set temperature of the target heating section, and calculating a first difference value between the set temperature of the target heating section and the set temperature of the adjacent heating section of the target heating section; if the first difference is larger than a first set threshold, controlling the adjacent heating sections of the target heating section to be heated to a target temperature in advance, wherein the target temperature is the temperature in the actual production process; judging whether the target temperature meets the condition of temperature rise in advance or not; and if the target temperature does not meet the early temperature rise condition, setting a new target temperature and controlling the adjacent heating sections of the target heating section to rise to the new target temperature in advance.
In the application, a set temperature of a target heating section is obtained, a first difference value between the set temperature of the target heating section and the set temperature of an adjacent next heating section of the target heating section is calculated, the first difference value is obtained by subtracting the set temperature of the target heating section from the set temperature of the target heating section, if the first difference value is larger than a first set threshold value, it is indicated that the set temperature difference of two adjacent heating sections is too large, uneven slab heating can be caused when a slab to be heated is heated from one heating section to the adjacent next heating section, the adjacent heating section of the target heating section is the adjacent next heating section of the target heating section, the adjacent next heating section of the target heating section needs to be controlled to be heated to the target temperature in advance, the heating rate of the adjacent next heating section of the target heating section is prevented from being too high for meeting the heating requirement of the slab to be heated, and the calculation method of the target temperature is TarTemp = (T) 1 -S 1 )·K 1 -T 2 ·K 2 Wherein T is 1 Is the set temperature, T, of the target heating section 2 Is the set temperature, S, of the next heating zone adjacent to the target heating zone 1 For the first setting of a threshold value, K 1 And K 2 And for the set correction coefficient, judging whether the target temperature meets the condition of early temperature rise before the temperature rise is carried out, if not, setting a new target temperature and controlling the adjacent heating sections of the target heating section to be heated to the new target temperature in advance.
In this application, for example, if the set temperature of the first heating segment is 1203 ℃, the set temperature of the adjacent second heating segment is 1110 ℃, the first set threshold is 20, and the difference between the set temperatures of the two heating segments is 1203-1110=93>20, it is necessary to raise the temperature of the second heating segment to the target temperature in advance, where the target temperature is (1203-20) × 0.67+0.33 × 1110=1159 ℃.
In an embodiment of the present application, the determining whether the target temperature meets an early temperature increase condition includes: calculating a second difference value between the target temperature and the set temperature of the adjacent heating section of the target heating section; and if the second difference is larger than a second set threshold, judging that the target temperature does not accord with the early temperature rise condition.
In this application, calculate the target temperature with the second difference of the temperature setting of the adjacent next heating section of target heating section, if the second difference is greater than the second and sets for the threshold value, explains the adjacent next heating section of target heating section intensifies the range in advance too big, is unfavorable for the heating of treating the heating slab in the adjacent next heating section of target heating section, the too big quality problem that leads to treating the heating slab of rising temperature amplitude probably appears, so judges the target temperature is not conform to the condition of rising temperature in advance, needs to set up a new target temperature again.
In an embodiment of the present application, the setting a new target temperature and controlling the heating sections adjacent to the target heating section to warm to the new target temperature in advance includes: summing the set temperature of the adjacent heating section of the target heating section and the second set threshold value, and taking the value obtained by summation as a new target temperature; and controlling the temperature of the adjacent heating sections of the target heating section to be increased to a new target temperature in advance.
In this application, it is right the temperature setting of the adjacent next heating section of target heating section with the threshold value is set for to the second and sums to the value that will sum obtains is as new target temperature, the threshold value is set for to the second and is represented the maximum amplitude that the adjacent next heating section of target heating section heaies up in advance controls the adjacent next heating section of target heating section heaies up to new target temperature in advance, and the adjacent next heating section of target heating section heaies up in advance can avoid waiting to heat the too fast problem of hot plate base emergence rate, thereby leads to the slab to go wrong.
In this application, for example, the set temperature of the first heating segment is 1203 ℃, the set temperature of the adjacent second heating segment is 1110 ℃, the first set threshold is 20, the second set threshold is 30, the second heating segment is heated to the target temperature 1159 ℃ in advance, and 1159-1110=49>30, then the new target temperature of the second heating segment is 1110+30=1140 ℃, and the second heating segment is heated to 1140 ℃ in advance.
Embodiments of the apparatus of the present application are described below, which may be used to perform the method for controlling the temperature of the heating furnace of the first aspect of the above-described embodiments of the present application. For details that are not disclosed in the embodiments of the apparatus of the present application, please refer to the embodiments of the method for controlling the temperature of the heating furnace of the first aspect of the present application.
Fig. 2 shows a block diagram of a control device for the temperature of the heating furnace in the embodiment of the present application.
As shown in fig. 2, a control device 200 for the temperature of the heating furnace in the embodiment of the present application includes: an acquisition unit 201, a first calculation unit 202, a second calculation unit 203, and a control unit 204.
The acquiring unit 201 is used for acquiring slab information of a plurality of slabs to be heated; a first calculating unit 202, configured to calculate, for each target heating zone in the heating furnace, a comprehensive weight of each blank to be heated in the target heating zone based on the blank information of the plurality of blanks to be heated, where the comprehensive weight is used to represent an importance degree of a corresponding blank in the target heating zone, and the target heating zone is any one of the plurality of heating zones in the heating furnace; a second calculating unit 203, configured to calculate a set temperature of the target heating section based on a comprehensive weight distribution of the multiple blanks to be heated in the target heating section; a control unit 204, configured to obtain the set temperature of the target heating segment, and control the temperature of the target heating segment in the actual production process by referring to the set temperature of the target heating segment.
In some embodiments of the present application, based on the foregoing solution, the first computing unit 202 is configured to: determining steel grade weights, position weights and necessary furnace temperature weights of the plurality of slabs to be heated based on slab information of the plurality of slabs to be heated; and calculating the comprehensive weight of each plate blank to be heated in the target heating section based on the steel grade weight, the position weight and the necessary furnace temperature weight of the plurality of plate blanks to be heated.
In some embodiments of the present application, based on the foregoing solution, the first computing unit 202 is further configured to: according to the type of the steel of each plate blank to be heated, looking up a table to obtain the weight of the steel of each plate blank to be heated; respectively setting a distance of an advanced entering section and a distance of a delayed exiting section before and after the target heating section, wherein the distance of the advanced entering section and the distance of the delayed exiting section are used for increasing the calculation range of the target heating section; calculating the position weight of each plate blank to be heated based on the relative position of each plate blank to be heated and the target heating section, the distance of the section entering in advance and the distance of the section leaving behind; acquiring the necessary furnace temperature and the slab temperature of each slab to be heated in the target heating section, and calculating the necessary temperature deviation and the end target temperature deviation of each slab to be heated in the target heating section on the basis of the necessary furnace temperature and the slab temperature; and calculating the necessary furnace temperature weight of each blank to be heated in the target heating section based on the necessary temperature deviation and the target temperature deviation at the end of the section.
In some embodiments of the present application, based on the foregoing solution, the first computing unit 202 is further configured to: and calculating the product of the steel grade weight, the position weight and the necessary furnace temperature weight of the blank to be heated in the target heating section aiming at each blank to be heated and the target heating section, and taking the product as the comprehensive weight of the blank to be heated in the target heating section.
In some embodiments of the present application, based on the foregoing solution, the second calculating unit 203 is configured to: calculating the sum of products of necessary furnace temperature and comprehensive weight of each plate blank to be heated in the target heating section; summing the comprehensive weights of all slabs to be heated in the target heating section to obtain a comprehensive weight sum; and calculating the ratio of the sum of the products to the sum of the comprehensive weights, and taking the ratio as the set temperature of the target heating section.
In some embodiments of the present application, based on the foregoing solution, the control unit 204 is configured to: acquiring the set temperature of the target heating section, and calculating a first difference value between the set temperature of the target heating section and the set temperature of the adjacent heating section of the target heating section; if the first difference is larger than a first set threshold, controlling the adjacent heating sections of the target heating section to be heated to a target temperature in advance, wherein the target temperature is the temperature in the actual production process; judging whether the target temperature meets the condition of temperature rise in advance; and if the temperature does not meet the early heating condition, setting a new target temperature and controlling the adjacent heating sections of the target heating section to be heated to the new target temperature in advance.
In some embodiments of the present application, based on the foregoing solution, the control unit 204 is further configured to: calculating a second difference value between the target temperature and the set temperature of the adjacent heating section of the target heating section; and if the second difference is larger than a second set threshold, judging that the target temperature does not accord with the early temperature rise condition.
In some embodiments of the present application, based on the foregoing solution, the control unit 204 is further configured to: summing the set temperature of the adjacent heating section of the target heating section and the second set threshold value, and taking the value obtained by summation as a new target temperature; and controlling the temperature of the adjacent heating sections of the target heating section to be increased to a new target temperature in advance.
A computer program product is provided comprising computer instructions stored in a computer readable storage medium and adapted to be read and executed by a processor to cause a computer device having said processor to perform the method of controlling a furnace temperature as described in the above embodiments.
The present application also provides a computer readable medium, which may be embodied in an electronic device; or may be present alone without being incorporated into the electronic device. The computer readable storage medium has at least one program code stored therein, which is loaded and executed by a processor to implement the method for controlling the temperature of a heating furnace described in the above embodiments.
In order that those skilled in the art will more readily understand the present application, it is described below in terms of a specific embodiment.
The method specifically comprises the following steps:
take a rolling plan of a hot rolling production line of 2160mm of a certain iron and steel enterprise as an example.
Step 1, obtaining slab schedule data including steel grade, slab size, charging temperature, target discharging temperature and total in-furnace time, and obtaining information of a heating furnace, including hearth radiation coefficient, in-furnace temperature and the like, wherein specific numerical values are shown in table 1;
step 2, determining the steel grade weight, the position weight and the necessary furnace temperature weight of the multiple slabs to be heated based on the slab information of the multiple slabs to be heated, and calculating the comprehensive weight of each slab to be heated in the target heating section based on the steel grade weight, the position weight and the necessary furnace temperature weight of the multiple slabs to be heated, wherein the specific numerical values are shown in table 2;
step 3, calculating the set temperature of the target heating section based on the comprehensive weight distribution of the multiple blanks to be heated in the target heating section, wherein the specific numerical values are shown in table 3;
and 4, calculating a difference value of the set temperatures of the current heating section and the next heating section, and when the difference value is greater than a temperature rise threshold value, performing advanced temperature rise on the furnace temperature of the next heating section by using furnace temperature feedforward control by using a model, wherein the larger the temperature deviation is, the larger the advanced temperature rise amplitude is. Referring to table 3, the set temperature of the heating section 2 was changed from 1110 ℃ to 1159 ℃, and the calculation process was as follows:
TarTemp＝(1203-20)*0.67+0.33*1110＝1159℃
and step 5, carrying out amplitude limiting inspection on the furnace temperature setting of each heating section, properly adjusting the temperature of the heating furnace when the temperature exceeds the amplitude limiting, setting the temperature rise amplitude limiting of the system to be 30 ℃, correcting the furnace temperature set in the 2 heating section from 1159 ℃ to 1140 ℃ because the temperature of the 2 heating section rises from 1110 ℃ to 1159 ℃ and exceeds the temperature rise amplitude limiting, and realizing the purpose of raising the temperature of the next heating section in advance aiming at the high-temperature steel in the 1 heating section.
Figure BDA0003879241970000121
TABLE 1
Figure BDA0003879241970000131
TABLE 2
Figure BDA0003879241970000132
TABLE 3
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
by introducing the distance of entering the section in advance and the distance of leaving the section in delay, the slab consideration range of the heating section is enlarged, the slab is not entered into the heating section, the slab heating weight is considered in advance, and the heating section is heated in advance.
The method comprises the steps of calculating the difference value of the set furnace temperatures of the front heating section and the rear heating section, taking the set temperature of the front heating section as a feedforward reference value of the next heating section, participating in the furnace temperature setting of the next heating section, and realizing the multi-section linkage control of the actual production temperature of the heating sections in the heating furnace
FIG. 3 illustrates a schematic structural diagram of a computer system suitable for use in implementing the electronic device of an embodiment of the present application.
It should be noted that the computer system 300 of the electronic device shown in fig. 3 is only an example, and should not bring any limitation to the functions and the application scope of the embodiments of the present application.
As shown in fig. 3, the computer system 300 includes a Central Processing Unit (CPU) 301, which can perform various appropriate actions and processes, such as executing the methods described in the above embodiments, according to a program stored in a Read-Only Memory (ROM) 302 or a program loaded from a storage portion 308 into a Random Access Memory (RAM) 303. In the RAM 303, various programs and data necessary for system operation are also stored. The CPU 301, ROM 302, and RAM 303 are connected to each other via a bus 304. An Input/Output (I/O) interface 305 is also connected to bus 304.
The following components are connected to the I/O interface 305: an input portion 306 including a keyboard, a mouse, and the like; an output section 307 including a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and the like, a speaker, and the like; a storage section 308 including a hard disk and the like; and a communication section 309 including a Network interface card such as a Local Area Network (LAN) card, a modem, or the like. The communication section 309 performs communication processing via a network such as the internet. A drive 310 is also connected to the I/O interface 305 as needed. A removable medium 311 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is mounted on the drive 310 as necessary, so that the computer program read out therefrom is mounted into the storage section 308 as necessary.
In particular, according to embodiments of the application, the processes described above with reference to the flow diagrams 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 illustrated by the flow chart. In such an embodiment, the computer program may be downloaded and installed from a network through the communication section 309, and/or installed from the removable medium 311. When the computer program is executed by a Central Processing Unit (CPU) 301, various functions defined in the system of the present application are executed.
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. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination 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 (EPROM), a 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 present application, 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 this application, however, a computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. 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 flowchart 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. 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 described 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 disposed in a processor. Wherein the names of the elements do not in some way constitute a limitation on the elements themselves.
It should be noted that although in the above detailed description several modules or units of the device for action execution are mentioned, such a division is not mandatory. Indeed, the features and functionality of two or more modules or units described above may be embodied in one module or unit, according to embodiments of the application. Conversely, the features and functions of one module or unit described above may be further divided into embodiments by a plurality of modules or units.
Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein may be implemented by software, or by software in combination with necessary hardware. Therefore, 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 (which may be a CD-ROM, a usb disk, a removable hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which may be a personal computer, a server, a touch terminal, or a network device, etc.) to execute the method according to the embodiments of the present application.
Other embodiments of the present 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 invention 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 invention pertains.
Furthermore, the above-described figures are merely schematic illustrations of processes involved in methods according to exemplary embodiments of the present application, and are not intended to be limiting. It will be readily understood that the processes shown in the above figures are not intended to indicate or limit the chronological order of the processes. In addition, it is also readily understood that these processes may be performed synchronously or asynchronously, e.g., in multiple modules.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims (10)

1. A method for controlling the temperature of a heating furnace, the method comprising:
acquiring slab information of a plurality of slabs to be heated;
respectively calculating the comprehensive weight of each blank to be heated in the target heating section based on the blank information of the plurality of blanks to be heated in each target heating section in the heating furnace, wherein the comprehensive weight is used for representing the importance degree of the corresponding blank in the target heating section, and the target heating section is any one of the plurality of heating sections in the heating furnace;
calculating the set temperature of the target heating section based on the comprehensive weight distribution of the multiple blanks to be heated in the target heating section;
and acquiring the set temperature of the target heating section, and controlling the temperature of the target heating section in the actual production process by referring to the set temperature of the target heating section.
2. The method of claim 1, wherein the calculating the comprehensive weight of each blank to be heated in the target heating section based on the blank information of the plurality of blanks to be heated respectively comprises:
determining steel grade weights, position weights and necessary furnace temperature weights of the plurality of slabs to be heated based on slab information of the plurality of slabs to be heated;
and calculating the comprehensive weight of each plate blank to be heated in the target heating section based on the steel grade weight, the position weight and the necessary furnace temperature weight of the plurality of plate blanks to be heated.
3. The method of claim 2, wherein the determining steel grade weights, position weights, and necessary furnace temperature weights for the plurality of slabs to be heated based on slab information for the plurality of slabs to be heated comprises:
according to the type of the steel of each plate blank to be heated, looking up a table to obtain the weight of the steel of each plate blank to be heated;
respectively setting a distance of an advanced entering section and a distance of a delayed exiting section before and after the target heating section, wherein the distance of the advanced entering section and the distance of the delayed exiting section are used for increasing the calculation range of the target heating section;
calculating the position weight of each plate blank to be heated based on the relative position of each plate blank to be heated and the target heating section, the distance of the section entering in advance and the distance of the section leaving behind;
acquiring the necessary furnace temperature and the slab temperature of each slab to be heated in the target heating section, and calculating the necessary temperature deviation and the end target temperature deviation of each slab to be heated in the target heating section on the basis of the necessary furnace temperature and the slab temperature;
and calculating the necessary furnace temperature weight of each blank to be heated in the target heating section based on the necessary temperature deviation and the target temperature deviation at the end of the section.
4. The method of claim 2, wherein calculating the integrated weight of each slab to be heated in the target heating zone based on the steel grade weight, the position weight and the necessary furnace temperature weight of the plurality of slabs to be heated comprises:
and calculating the product of the steel grade weight, the position weight and the necessary furnace temperature weight of the plate blank to be heated in the target heating section aiming at each plate blank to be heated and the target heating section, and taking the product as the comprehensive weight of the plate blank to be heated in the target heating section.
5. The method of claim 1, wherein the calculating the set temperature of the target heating zone based on the integrated weight distribution of the plurality of heated slabs within the target heating zone comprises:
calculating the sum of products of necessary furnace temperature and comprehensive weight of each plate blank to be heated in the target heating section;
summing the comprehensive weights of all slabs to be heated in the target heating section to obtain a comprehensive weight sum;
and calculating the ratio of the sum of the products to the sum of the comprehensive weights, and taking the ratio as the set temperature of the target heating section.
6. The method of claim 1, wherein the obtaining the set temperature of the target heating section and controlling the temperature of the target heating section in the actual production process with reference to the set temperature of the target heating section comprises:
acquiring the set temperature of the target heating section, and calculating a first difference value between the set temperature of the target heating section and the set temperature of the adjacent heating section of the target heating section;
if the first difference is larger than a first set threshold, controlling the adjacent heating sections of the target heating section to be heated to a target temperature in advance, wherein the target temperature is the temperature in the actual production process;
judging whether the target temperature meets the condition of temperature rise in advance;
and if the temperature does not meet the early heating condition, setting a new target temperature and controlling the adjacent heating sections of the target heating section to be heated to the new target temperature in advance.
7. The method of claim 6, wherein the determining whether the target temperature meets an early warm-up condition comprises:
calculating a second difference value between the target temperature and the set temperature of the adjacent heating section of the target heating section;
and if the second difference is larger than a second set threshold, judging that the target temperature does not accord with the early temperature rise condition.
8. The method of claim 7, wherein the setting a new target temperature and controlling the heating segments adjacent to the target heating segment to warm up to the new target temperature in advance comprises:
summing the set temperature of the adjacent heating section of the target heating section and the second set threshold value, and taking the value obtained by summation as a new target temperature;
and controlling the temperature of the adjacent heating sections of the target heating section to be increased to a new target temperature in advance.
9. A device for controlling the temperature of a heating furnace, said device comprising:
an acquisition unit configured to acquire slab information of a plurality of slabs to be heated;
the first calculation unit is used for calculating the comprehensive weight of each blank to be heated in the target heating section on the basis of the blank information of the plurality of blanks to be heated in each target heating section in the heating furnace, wherein the comprehensive weight is used for representing the importance degree of the corresponding blank in the target heating section, and the target heating section is any one of the plurality of heating sections in the heating furnace;
a second calculation unit, configured to calculate a set temperature of the target heating section based on a comprehensive weight distribution of the multiple blanks to be heated in the target heating section;
and the control unit is used for acquiring the set temperature of the target heating section and controlling the temperature of the target heating section in the actual production process by referring to the set temperature of the target heating section.
10. An electronic device, characterized in that the electronic device comprises one or more processors and one or more memories, in which at least one program code is stored, which is loaded and executed by the one or more processors to implement the method of controlling a temperature of a furnace according to any one of claims 1 to 8.
CN202211224953.7A 2022-10-09 2022-10-09 Heating furnace temperature control method and device and electronic equipment Pending CN115615193A (en)

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