阅读说明：本技术 一种轧钢加热炉的控制方法和装置 (Control method and device for steel rolling heating furnace ) 是由 官佳宝 王会波 冯积分 于 2020-06-10 设计创作，主要内容包括：本发明实施例公开了一种轧钢加热炉的控制方法和装置,其中,所述方法包括：确定轧钢加热炉中钢坯的目标温度曲线；对轧钢加热炉各炉段中的钢坯加热过程状态进行精确跟踪；在钢坯加热过程状态精确跟踪的基础上,根据所述目标温度曲线预判修正控制时间及调整参数；根据所述修正控制时间及调整参数,对轧钢加热炉进行调整控制。采用本发明所述的轧钢加热炉的控制方法,能够通过钢坯加热过程按目标温度曲线进行控制的方式,实现炉温的自动判断自动调节,从而达到精确控制钢坯升降温过程的目的。(The embodiment of the invention discloses a control method and a device of a steel rolling heating furnace, wherein the method comprises the following steps: determining a target temperature curve of a steel billet in a steel rolling heating furnace; accurately tracking the heating process state of the steel billets in each furnace section of the steel rolling heating furnace; on the basis of accurate tracking of the state of the billet heating process, pre-judging and correcting control time and adjusting parameters according to the target temperature curve; and adjusting and controlling the steel rolling heating furnace according to the correction control time and the adjustment parameters. By adopting the control method of the steel rolling heating furnace, the automatic judgment and automatic adjustment of the furnace temperature can be realized by controlling the heating process of the steel billet according to the target temperature curve, so that the aim of accurately controlling the heating and cooling processes of the steel billet is fulfilled.)

1. A control method of a steel rolling heating furnace is characterized by comprising the following steps:

determining a target temperature curve of a steel billet in a steel rolling heating furnace;

accurately tracking the heating process state of the steel billets in each furnace section of the steel rolling heating furnace;

on the basis of accurate tracking of the state of the billet heating process, pre-judging and correcting control time and adjusting parameters according to the target temperature curve;

and adjusting and controlling the steel rolling heating furnace according to the correction control time and the adjustment parameters.

2. The control method of the steel rolling heating furnace according to claim 1, wherein the accurate tracking of the heating process state of the steel billet in each furnace section of the steel rolling heating furnace specifically comprises:

accurately tracking a billet feeding event to obtain an initial state of the billet when the billet is fed into the furnace;

accurately tracking the position of the steel billet in each furnace section of the steel rolling heating furnace;

accurately tracking the temperature of the steel billet in each furnace section of the steel rolling heating furnace;

and accurately tracking the steel billet discharging event to obtain the temperature state of the steel billet during discharging.

3. The control method of a steel rolling heating furnace according to claim 1, wherein the determining of the target temperature profile of the steel slab in the steel rolling heating furnace specifically comprises:

setting the temperature of the billet at the section mouth of each furnace section in advance according to a preset thermodynamic temperature field model, the furnace condition parameters of a steel rolling heating furnace and the steel rolling process standard, and establishing an optimal temperature curve of the billet;

acquiring a furnace temperature curve detected by a furnace temperature uniformity tester in a billet heating furnace and the residence time of the position of the billet to calculate and judge an actual billet temperature curve;

and judging whether the actual temperature curve of the steel billet is coupled with the optimal temperature curve, if not, revising the optimal temperature curve according to the actual temperature curve of the steel billet, and if so, determining the optimal temperature curve as a target temperature curve of the steel billet in the steel rolling heating furnace.

4. The control method of a steel rolling heating furnace according to claim 2, wherein the accurately tracking the steel billet entry event and obtaining the initial state of the steel billet when entering the furnace specifically comprises:

determining the type of a steel billet which is currently fed into a furnace and the initial temperature of the steel billet according to a preset steel billet temperature detection device in front of the furnace and a steel billet tracking detection device, wherein the steel billet tracking detection device is controlled by a steel billet computer control system to obtain the real-time position of the steel billet in a steel rolling heating furnace;

the method comprises the following steps of accurately tracking the temperature of steel billets in each furnace section of a steel rolling heating furnace, specifically, accurately tracking the temperature of the steel billets in each furnace section of the steel rolling heating furnace according to a preset thermodynamic temperature field model;

the method comprises the steps of accurately tracking a steel billet discharging event to obtain the temperature state of the steel billet during discharging, and specifically, accurately tracking the steel billet discharging event according to a preset steel billet discharging temperature detection device to obtain the temperature state of the steel billet during discharging in real time.

5. The control method of a steel rolling heating furnace according to claim 1, wherein the adjustment control of the steel rolling heating furnace is specifically: and connecting the residual oxygen detection result of the steel rolling heating furnace into a preset PLC system, acquiring the residual oxygen content information in the current flue gas, controlling a gas valve and/or an air valve through a preset valve execution device, and adjusting the temperature rising and falling rate of the steel billet in the steel rolling heating furnace.

6. The method for controlling a steel rolling heating furnace according to claim 3, wherein the step of setting the temperature of the steel billet at the exit of each furnace section in advance according to a preset thermodynamic temperature field model, the furnace condition parameters of the steel rolling heating furnace and the steel rolling process standard to establish an optimal temperature curve of the steel billet comprises the steps of:

measuring the temperature of each furnace section of the steel rolling heating furnace by thermocouples arranged on each furnace section in advance according to the furnace condition parameters of the steel rolling heating furnace and the steel rolling process standard; and calculating the temperature of the steel billet in each furnace section of the steel rolling heating furnace according to the thermodynamic temperature field model, the time of the steel billet entering the furnace and the position of the steel billet, and determining an optimal temperature curve corresponding to the control of the intelligent control system.

7. The control method of a steel rolling heating furnace according to claim 1, wherein the pre-judging and correcting of the control time and the adjustment parameters according to the target temperature curve specifically comprises: and comparing temperature data obtained by accurately tracking the temperature of the steel billets in each furnace section of the steel rolling heating furnace through a preset thermodynamic temperature field model with a target temperature curve in real time, and prejudging and correcting control time and adjusting parameters.

8. A control device of a steel rolling heating furnace is characterized by comprising:

the target temperature curve establishing unit is used for determining a target temperature curve of a steel billet in a steel rolling heating furnace;

the state tracking unit is used for accurately tracking the heating process state of the steel billets in each furnace section of the steel rolling heating furnace;

the judgment unit is used for prejudging and correcting control time and adjustment parameters according to the target temperature curve on the basis of accurate tracking of the state of the billet heating process;

and the adjustment control unit is used for adjusting and controlling the steel rolling heating furnace according to the correction control time and the adjustment parameters.

9. An electronic device, comprising:

a processor, and

a memory for storing a program of a control method of a rolling heating furnace, the electronic device being powered on and executing the program of the control method of the rolling heating furnace through the processor to execute the control method of the rolling heating furnace according to any one of claims 1 to 7.

10. A computer-readable storage medium characterized in that the computer-readable storage medium contains one or more program instructions for a server to execute the control method of a rolling heating furnace according to any one of claims 1 to 7.

Technical Field

The embodiment of the invention relates to the technical field of electrical automation control, in particular to a control method and a control device of a steel rolling heating furnace, and further relates to electronic equipment and a computer readable storage medium.

Background

In recent years, with the rapid development of economic society, the demand of steel products for enterprises is in an exponential growth trend, and the requirements on the quality and the production efficiency of the steel products are higher and higher. With the continuous development of computer technology, how to intelligently control the furnace temperature of a steel rolling heating furnace in the production process by using a computer automation control technology is becoming the focus of the attention of technicians in the industry.

Currently, the traditional control system provides an optimal furnace temperature setting, and the basic control system accurately tracks the set furnace temperature by adjusting the gas flow and the air-fuel ratio. However, since most of the basic control systems of the heating furnaces do not have the capability of grasping the temperature of the billet and the current rolling rhythm, the furnace temperature control mode can only adjust the furnace temperature based on the current set temperature difference. In addition, a simple PID feedback control mode is adopted or intelligent control technologies such as fuzzy control and the like are added for adjusting the furnace temperature, the control effect is often unsatisfactory or even unacceptable for operators, and the control effect is just one of the main focuses of the traditional furnace temperature control mode for the operators to control the furnace temperature. In the face of the current control situation of a steel rolling heating furnace, it is more difficult to effectively control the temperature of the steel billet by realizing the furnace temperature and controlling the temperature of the steel billet through furnace temperature control. Because a perfect gas flow control mechanism is not available, an operator can only indirectly change the furnace temperature by tentatively adjusting the opening degrees of air and gas valves according to the detection value of a thermocouple in a furnace section, and even the operator with rich experience can not overcome the problems existing in the current production process under the condition of no billet temperature tracking capability.

Disclosure of Invention

Therefore, the embodiment of the invention provides a control method of a steel rolling heating furnace, which aims to solve the problems that the furnace temperature control mode of the steel rolling heating furnace in the prior art is large in limitation, low in automation and intelligence degree and incapable of effectively meeting the actual requirements of current users.

In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:

in a first aspect, an embodiment of the present invention provides a method for controlling a steel rolling heating furnace, including: determining a target temperature curve of a steel billet in a steel rolling heating furnace; accurately tracking the heating process state of the steel billets in each furnace section of the steel rolling heating furnace; on the basis of accurate tracking of the state of the billet heating process, pre-judging and correcting control time and adjusting parameters according to the target temperature curve; and adjusting and controlling the steel rolling heating furnace according to the correction control time and the adjustment parameters.

Further, the accurate tracking of the heating process state of the steel billets in each furnace section of the steel rolling heating furnace specifically comprises the following steps: accurately tracking a billet feeding event to obtain an initial state of the billet when the billet is fed into the furnace; accurately tracking the position of the steel billet in each furnace section of the steel rolling heating furnace; accurately tracking the temperature of the steel billet in each furnace section of the steel rolling heating furnace; and accurately tracking the steel billet discharging event to obtain the temperature state of the steel billet during discharging.

Further, the determining of the target temperature curve of the steel billet in the steel rolling heating furnace specifically comprises: setting the temperature of the billet at the section mouth of each furnace section in advance according to a preset thermodynamic temperature field model, the furnace condition parameters of a steel rolling heating furnace and the steel rolling process standard, and establishing an optimal temperature curve of the billet; acquiring a furnace temperature curve detected by a furnace temperature uniformity tester in a billet heating furnace and the residence time of the position of the billet to calculate and judge an actual billet temperature curve; and judging whether the actual temperature curve of the steel billet is coupled with the optimal temperature curve, if not, revising the optimal temperature curve according to the actual temperature curve of the steel billet, and if so, determining the optimal temperature curve as a target temperature curve of the steel billet in the steel rolling heating furnace.

Further, the accurately tracking the billet entry event to obtain the initial state of the billet when entering the furnace specifically includes: determining the type of a steel billet which is currently fed into a furnace and the initial temperature of the steel billet according to a preset steel billet temperature detection device in front of the furnace and a steel billet tracking detection device, wherein the steel billet tracking detection device is controlled by a steel billet computer control system to obtain the real-time position of the steel billet in a steel rolling heating furnace; the method comprises the following steps of accurately tracking the temperature of steel billets in each furnace section of a steel rolling heating furnace, specifically, accurately tracking the temperature of the steel billets in each furnace section of the steel rolling heating furnace according to a preset thermodynamic temperature field model; the method comprises the steps of accurately tracking a steel billet discharging event, acquiring the temperature state of the steel billet during discharging, and specifically acquiring the temperature state of the steel billet during discharging according to a preset steel billet discharging temperature detection device.

Further, the adjustment and control of the steel rolling heating furnace specifically comprises: and connecting the residual oxygen detection result of the steel rolling heating furnace into a preset PLC system, acquiring the residual oxygen content information in the current flue gas, controlling a gas valve and/or an air valve through a preset valve execution device, and adjusting the temperature rising and falling rate of the steel billet in the steel rolling heating furnace.

Further, the setting of the temperature of the billet at the exit of each furnace section in advance according to a preset thermodynamic temperature field model, furnace condition parameters of a steel rolling heating furnace and steel rolling process standards and establishing an optimal temperature curve of the billet specifically include: measuring the temperature of each furnace section of the steel rolling heating furnace by thermocouples arranged on each furnace section in advance according to the furnace condition parameters of the steel rolling heating furnace and the steel rolling process standard; and calculating the temperature of the steel billet in each furnace section of the steel rolling heating furnace according to the thermodynamic temperature field model, the time of the steel billet entering the furnace and the position of the steel billet, and determining an optimal temperature curve corresponding to the control of the intelligent control system.

Further, pre-judging and correcting the control time and the adjustment parameter according to the target temperature curve specifically comprises: and comparing temperature data obtained by accurately tracking the temperature of the steel billets in each furnace section of the steel rolling heating furnace through a preset thermodynamic temperature field model with a target temperature curve in real time, and prejudging and correcting control time and adjusting parameters.

In a second aspect, an embodiment of the present invention provides a control device for a steel rolling heating furnace, including: the target temperature curve establishing unit is used for determining a target temperature curve of a steel billet in a steel rolling heating furnace; the state tracking unit is used for accurately tracking the heating process state of the steel billets in each furnace section of the steel rolling heating furnace; the judgment unit is used for prejudging and correcting control time and adjustment parameters according to the target temperature curve on the basis of accurate tracking of the state of the billet heating process; and the adjustment control unit is used for adjusting and controlling the steel rolling heating furnace according to the correction control time and the adjustment parameters.

Further, the state tracking unit is specifically configured to: accurately tracking a billet feeding event to obtain an initial state of the billet when the billet is fed into the furnace; accurately tracking the position of the steel billet in each furnace section of the steel rolling heating furnace; accurately tracking the temperature of the steel billet in each furnace section of the steel rolling heating furnace; and accurately tracking the steel billet discharging event to obtain the temperature state of the steel billet during discharging.

Further, the target temperature curve establishing unit is specifically configured to: setting the temperature of the billet at the section mouth of each furnace section in advance according to a preset thermodynamic temperature field model, the furnace condition parameters of a steel rolling heating furnace and the steel rolling process standard, and establishing an optimal temperature curve of the billet; acquiring an actual billet temperature curve detected by a furnace temperature uniformity tester in a billet heating furnace; and judging whether the actual temperature curve of the steel billet is coupled with the optimal temperature curve, if not, revising the optimal temperature curve according to the actual temperature curve of the steel billet, and if so, determining the optimal temperature curve as a target temperature curve of the steel billet in the steel rolling heating furnace.

Further, the state tracking unit is specifically configured to: determining the type and initial temperature of the steel billet currently entering a furnace according to a preset steel billet temperature detection device in front of the furnace and a steel billet tracking detection device, and acquiring the real-time position of the steel billet in a steel rolling heating furnace; the method comprises the following steps of accurately tracking the temperature of steel billets in each furnace section of a steel rolling heating furnace, specifically, accurately tracking the temperature of the steel billets in each furnace section of the steel rolling heating furnace according to a preset thermodynamic temperature field model; the method comprises the steps of accurately tracking a steel billet discharging event, acquiring the temperature state of the steel billet during discharging, and specifically acquiring the temperature state of the steel billet during discharging according to a preset steel billet discharging temperature detection device.

Further, the adjustment control unit is specifically configured to: and connecting the residual oxygen detection result of the steel rolling heating furnace into a preset PLC system, acquiring the residual oxygen content information in the current flue gas, controlling a gas valve and/or an air valve through a preset valve execution device, and adjusting the temperature rise and fall rate of the steel rolling heating furnace.

Further, the setting of the temperature of the billet at the exit of each furnace section in advance according to a preset thermodynamic temperature field model, furnace condition parameters of a steel rolling heating furnace and steel rolling process standards and establishing an optimal temperature curve of the billet specifically include: measuring the temperature of each furnace section of the steel rolling heating furnace by a thermocouple arranged on each furnace section according to the furnace condition parameters of the steel rolling heating furnace and the steel rolling process standard; and calculating the temperature of the steel billet in each furnace section of the steel rolling heating furnace according to the thermodynamic temperature field model, the time of the steel billet entering the furnace and the position of the steel billet, and determining an optimal temperature curve corresponding to the control of the intelligent control system.

Further, the determining unit is specifically configured to: and comparing temperature data obtained by accurately tracking the temperature of the steel billets in each furnace section of the steel rolling heating furnace through a preset thermodynamic temperature field model with a target temperature curve in real time, and prejudging and correcting control time and adjusting parameters.

In a third aspect, an embodiment of the present invention further provides an electronic device, including: a processor and a memory; the memory is used for storing a program of a control method of the steel rolling heating furnace, and the electronic equipment executes any one of the control methods of the steel rolling heating furnace after being electrified and running the program of the control method of the steel rolling heating furnace through the processor.

In a fourth aspect, the embodiment of the invention further provides a computer-readable storage medium, wherein the computer storage medium contains one or more program instructions, and the one or more program instructions are used for a server to execute the method of any one of the control methods of the steel rolling heating furnace.

The control method of the steel rolling heating furnace can enable the intelligent control system to control under the condition that the position of steel billets in the furnace and the furnace temperature can be accurately tracked according to a target temperature curve of the steel billets, detect the temperature state of each steel billet, thereby furthest eliminating the situation that the temperature of the steel billets is not mastered for rolling, reducing the impact of the steel billets on steel rolling equipment, and realizing the control, automatic judgment and automatic adjustment of the furnace temperature according to the target temperature curve in the heating process of the steel billets through the working mode of the target temperature curve, thereby achieving the control purpose of accurately controlling the temperature rising and falling process of the steel billets.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

FIG. 1 is a flow chart of a control method of a steel rolling heating furnace according to an embodiment of the present invention;

FIG. 2 is a schematic view of a control device of a steel rolling heating furnace according to an embodiment of the present invention;

fig. 3 is a schematic diagram of an electronic device according to an embodiment of the present invention.

Detailed Description

The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The following describes an embodiment of a control method of a steel rolling heating furnace based on the present invention. As shown in fig. 1, which is a flowchart of a control method of a steel rolling heating furnace according to an embodiment of the present invention, a specific implementation process includes the following steps:

step S101: and determining a target temperature curve of the steel billet in the steel rolling heating furnace.

In the embodiment of the invention, the temperature of the billet at the separation section opening of each furnace section can be preset according to a preset thermodynamic temperature field model, the furnace condition parameters of the steel rolling heating furnace and the steel rolling process standard, and the optimal temperature curve of the billet is established. Further, acquiring an actual steel billet temperature curve detected by a furnace temperature uniformity tester (also called a black box) in the steel billet heating furnace, judging whether the actual steel billet temperature curve is coupled with the optimal temperature curve, and if so, determining the optimal temperature curve as a target temperature curve of the steel billet in the steel rolling heating furnace; if not, revising the optimal temperature curve according to the actual temperature curve of the steel billet.

In the specific implementation process, after the temperature of the steel billet at the exit of each furnace section is set, a steel rolling heating furnace computer secondary intelligent control system (intelligent control system for short) is used for carrying out intelligent control according to the temperature of the steel billet at the exit, so that the temperature requirement of the steel billet during steel rolling at the exit is met. The intelligent control system can control according to the optimal temperature curve to obtain the best temperature curve of the actual billet steel operation, and the requirements of the steel rolling process are met. Wherein the abscissa of the optimal temperature curve is the furnace length, and the ordinate is the heating temperature of the steel billet; the furnace section comprises a preheating section, a heating section, a soaking section and the like in sequence. According to the furnace conditions of the steel rolling heating furnace (such as the structural design of the steel rolling heating furnace, the allowed maximum temperature and the allowed minimum temperature of steel rolling, the upper limit curve and the lower limit curve of the furnace temperature of the steel rolling heating furnace and the like), thermocouples arranged on each furnace section measure the temperature of each furnace section of the heating furnace, the temperature of the steel billet in each furnace section of the heating furnace is calculated according to a thermodynamic temperature field model, the time for the steel billet to enter the furnace and the position of the steel billet, and the best temperature curve obtained by the control of an intelligent control system is taken as a target temperature.

It should be noted that, since there is a systematic error between the operating temperature of the steel billet measured by the black box and the optimum temperature profile, the systematic error is removed first, and then the optimum temperature profile of the steel billet is determined. If the difference between the actual temperature curve data of the steel billet measured by the black box and the data obtained by the intelligent control system is large, the reason needs to be analyzed and searched, the measurement and verification are carried out again, the optimal temperature curve of the steel billet is obtained and is used as the target temperature curve, and therefore the intelligent control system which is preset subsequently can carry out intelligent control according to the target temperature curve conveniently.

The method comprises the following steps of presetting the temperature of a steel billet at a separation port of each furnace section according to a preset thermodynamic temperature field model, furnace condition parameters of a steel rolling heating furnace and steel rolling process standards, and establishing an optimal temperature curve of the steel billet, wherein the specific realization process comprises the following steps: and measuring the temperature of each furnace section of the steel rolling heating furnace by a thermocouple arranged on each furnace section according to the furnace condition parameters of the steel rolling heating furnace and the steel rolling process standard. Further, according to the thermodynamic temperature field model, the time of the steel billet entering the furnace and the position of the steel billet, the temperature of the steel billet in each furnace section of the steel rolling heating furnace is calculated, and therefore the optimal temperature curve corresponding to the control of the intelligent control system is determined. It has been described above that the steel blank is controlled by the intelligent control system in the heating furnace to obtain the optimal temperature curve, then according to the actual temperature measured by the black box, if the temperature curve measured by the black box is temperature coupled with the optimal temperature curve obtained by the intelligent control system, it is determined as the target temperature curve of the steel blank, if the temperature of the obtained optimal temperature curve does not meet the system error, only system error is made, system error is removed, the target temperature curve of the steel blank is determined, if the difference between the temperature curve measured by the black box and the temperature curve obtained by the intelligent control system is too large, and exceeds the error range, the intelligent control system needs to be carried out again to control the heating of the steel blank until the requirement is met, and finally the optimal temperature curve is determined as the target optimal temperature curve.

Step S102: and accurately tracking the heating process state of the steel billets in each furnace section of the steel rolling heating furnace.

After the target temperature curve of the steel billet in the steel rolling heating furnace is determined in step S101, the heating process state of the steel billet in each furnace section of the steel rolling heating furnace can be accurately tracked in this step, and actual temperature data can be obtained.

In the embodiment of the invention, the accurate tracking of the heating process state of the steel billets in each furnace section of the steel rolling heating furnace comprises the following steps: accurately tracking a billet feeding event to obtain an initial state of the billet when the billet is fed into the furnace; accurately tracking the position of the steel billet in each furnace section of the steel rolling heating furnace; accurately tracking the temperature of the steel billet in each furnace section of the steel rolling heating furnace; and accurately tracking the steel billet discharging event to obtain the temperature state of the steel billet during discharging. The above described precise tracking of the billet entry event to obtain the initial state of the billet entry, the specific implementation process may include: determining the type and initial temperature of the steel billet currently entering a furnace according to a preset steel billet temperature detection device in front of the furnace and a steel billet tracking detection device, and acquiring the real-time position of the steel billet in a steel rolling heating furnace; the method comprises the following steps of accurately tracking the temperature of steel billets in each furnace section of a steel rolling heating furnace, specifically, accurately tracking the temperature of the steel billets in each furnace section of the steel rolling heating furnace according to a preset thermodynamic temperature field model; the method comprises the steps of accurately tracking a steel billet discharging event, acquiring the temperature state of the steel billet during discharging, and specifically acquiring the temperature state of the steel billet during discharging according to a preset steel billet discharging temperature detection device.

In the specific implementation process, a furnace-ahead billet temperature detection device and a billet tracking detection device (cold pickup device) need to be arranged for establishing a furnace-ahead billet feeding tracking system so as to determine whether the current fed billet is a cold billet or a hot billet, a hot billet surface temperature detection value and the like, thereby determining the initial temperature of the billet. Further, a billet tapping temperature (surface) detection device needs to be arranged so as to feed back the actual billet tapping temperature (surface). The residual oxygen detection result is accessed into the PLC system, so that the intelligent control system can master the residual oxygen content in the current flue gas in real time, the residual oxygen target control can be conveniently carried out by arranging a coal gas and gas valve executing device, the executing and detecting precision is ensured, the intelligent control system has the capability of accurately controlling the gas flow, and the accurate control conditions of the gas flow and the air-fuel ratio are met.

Step S103: and pre-judging and correcting the control time and the adjustment parameters according to the target temperature curve on the basis of the accurate tracking of the state of the billet heating process.

After the state data of the billet heating process is obtained in step S102, the control time and the adjustment parameters may be pre-determined and corrected according to the target temperature curve in this step.

In the embodiment of the present invention, the pre-determining and correcting the control time and the adjustment parameter according to the target temperature curve specifically includes: and comparing temperature data obtained by accurately tracking the temperature of the steel billets in each furnace section of the steel rolling heating furnace through a preset thermodynamic temperature field model with a target temperature curve in real time, and prejudging and correcting control time and adjusting parameters.

Step S104: and adjusting and controlling the steel rolling heating furnace according to the correction control time and the adjustment parameters.

After the correction control time and the adjustment parameter are obtained in step S103, the adjustment control of the steel rolling heating furnace may be further performed in this step according to the correction control time and the adjustment parameter.

In the embodiment of the invention, the intelligent control system carries out adjustment control on the steel rolling heating furnace according to the target temperature curve in the control process of each furnace section, if the actual temperature of the steel billet deviates from the target temperature curve, the temperature of the heating furnace is adjusted by a method for controlling the temperature of the heating furnace through the intelligent control system, and the requirement of steel rolling quality can be met only by considering the temperature increasing and decreasing rate of the steel billet. The heating temperature of the steel billet in each furnace section and the heating time of the steel billet in each furnace section ensure that the steel billet runs in each furnace section according to the optimal temperature curve, and the steel rolling process requirements are met when steel is tapped from a steel tapping hole. The target temperature curve refers to the optimal temperature curve of the steel billet which can be achieved by the existing heating furnace through intelligent control. The steel rolling heating furnace is adjusted and controlled, and specifically: firstly, under the guidance of a heating system, a billet target temperature curve of each furnace temperature controllable area is established, and an intelligent control target is decomposed into each controllable area, so that the billet heating process is controlled according to the target temperature curve. And connecting the residual oxygen detection result of the steel rolling heating furnace into a preset PLC system, acquiring the residual oxygen content information in the current flue gas, controlling a gas valve and/or an air valve through a preset valve execution device, and adjusting the temperature rise and fall rate of the steel rolling heating furnace.

Taking the steel rolling heating furnace for producing medium-thick plates in a steel rolling mill as an example, the steel rolling heating furnace has the total length of 50000 mm, wherein the length of a preheating section is 15000mm, the length of a heating section is 10000mm, the length of a soaking section is 10000mm, namely the preheating section is 0-15 m, the length of a heating section is 15-30 m, the length of a heating section is 30-40 m, and the soaking section is 40-50 m. The rolling mill requires a tap hole steel slab temperature of 1180 c-1200 c, and the steel slab is heated to the desired tap hole temperature at about 30 c (cold billet room temperature) and about 400 c (hot billet) at room temperature in the total length of the rolling furnace of about 50000 mm.

Taking a cold billet as an example, the heating of a steel billet of a main common medium plate steel comprises surface temperature, temperature difference along the section and temperature difference along the length direction of the billet. The final heating temperature of the steel billet in the furnace is set after considering the practical conditions of rolling process requirements, steel products, structural characteristics of a rolling mill, structural characteristics of the furnace and the like, the temperature requirement 1180-1200 ℃ of the heated steel billet set by a computer in an intelligent control system is the temperature requirement of the steel outlet steel billet, the production process requirements are met, and thus the temperature of the steel billet at the section opening of each furnace section is set as follows: a preheating section: heating the cold billet from ambient temperature 30 ℃ to 700 ℃ in a 15 meter preheating section; in a preheating section of 15 meters, high-heat gas mainly combusted by the heating section is longitudinally blown to the airflow of the preheating section for heating; heating for a first period: heating the billet at 700 ℃ to 1050 ℃ in a heating section of 15-30 m; and (3) heating for a second stage: in a heating section of 30-40 m, heating the billet at 1050 ℃ to 1180-1200 ℃; a soaking section: the steel billet received by the soaking section basically reaches the temperature required by the steel tapping hole of 1200 ℃. In the specific implementation process, because the internal and surface temperatures of the steel billet are not balanced, the steel billet is basically not heated by heat balance within a period of time or the furnace temperature is finely adjusted and controlled, so that the temperature of the steel billet in a soaking section of 40-50 meters is 1180-1200 ℃, and the steel billet can meet the temperature requirement during tapping.

The billet is heated from the room temperature of 30 ℃ to 700 ℃, the temperature of the billet can be raised to 700 ℃ at the furnace temperature higher than 700 ℃ according to a thermodynamic temperature field model, and if the furnace temperature is stable and ideal and the control can also be ideally controlled, the temperature of the billet can be raised according to an ideal temperature curve (namely, the temperature is raised according to a certain speed). If the specific heating furnace is controlled by the intelligent control system, the temperature of the steel billet has certain fluctuation, the steel billet can run according to a certain temperature curve, an ideal temperature curve of the steel billet in each furnace section in the heating furnace is established according to a thermodynamic temperature field model, the optimal temperature curve is obtained through the actual furnace condition of the heating furnace, the intelligent control system control and the steel rolling process requirements, the optimal temperature curve is determined, other steel billets can be discharged from the furnace and sent to a rolling mill for rolling when being controlled in a temperature difference range. In the specific implementation process, the optimal temperature curve can be detected, verified and adjusted by using a black box to obtain a target temperature curve of each furnace section of the steel billet in the heating furnace, wherein the abscissa is the furnace length, and the ordinate is the heating temperature of the steel billet. And testing the actual temperature of the steel billet in each furnace section of the heating furnace according to a thermocouple arranged on the heating furnace. In this embodiment, two temperature measuring points can be arranged at the top of the soaking section, two temperature measuring points are arranged at the lower parts of two sides, 6 measuring points are provided, two temperature measuring points are arranged at the top of the heating section and the top of the heating section, two temperature measuring points are arranged at the lower parts of two sides, 8 measuring points are provided, two temperature measuring points are arranged at the top of the preheating section, two temperature measuring points are arranged at the top of the furnace tail, two measuring points are arranged at the side surface, 6 measuring points are provided, 20 measuring points are provided for the heating furnace, and the temperature measuring points and the thermocouple for measuring the temperature of the heating.

If the actual temperature of the steel billet in each furnace section deviates from the target temperature curve, the steel billet can run in each furnace section according to the target temperature curve by controlling the heating and cooling rate of the heating furnace, the heating temperature of the steel billet in each furnace section and the heating time in each furnace section, so that the steel rolling process requirement is met when steel is tapped from a steel tapping hole.

The control method of the steel rolling heating furnace can enable the intelligent control system to control under the condition that the position of steel billets in the furnace and the furnace temperature can be accurately tracked according to a target temperature curve of the steel billets, detect the temperature state of each steel billet, thereby furthest eliminating the situation that the temperature of the steel billets is not mastered for rolling, reducing the impact of the steel billets on steel rolling equipment, and realizing the control, automatic judgment and automatic adjustment of the furnace temperature according to the target temperature curve in the heating process of the steel billets through the working mode of the target temperature curve, thereby achieving the purpose of accurately controlling the temperature rising and falling process of the steel billets.

Corresponding to the control method of the steel rolling heating furnace, the invention also provides a control device of the steel rolling heating furnace. Since the embodiment of the device is similar to the embodiment of the method, the description is simple, and the related points can be referred to the description of the embodiment of the method, and the embodiment of the control device of the rolling heating furnace described below is only schematic. Fig. 2 is a schematic diagram of a control device of a steel rolling heating furnace according to an embodiment of the present invention.

The control device of the steel rolling heating furnace comprises the following parts:

and a target temperature profile establishing unit 201 for determining a target temperature profile of the steel slab in the steel rolling heating furnace.

And the state tracking unit is used for accurately tracking 202 the heating process state of the steel billets in each furnace section of the steel rolling heating furnace.

And the judging unit 203 is used for prejudging and correcting the control time and the adjusting parameters according to the target temperature curve on the basis of the accurate tracking of the state of the billet heating process.

And the adjusting control unit 204 is used for adjusting and controlling the steel rolling heating furnace according to the correction control time and the adjusting parameters.

The control device of the steel rolling heating furnace can enable the intelligent control system to control under the condition that the position of steel billets in the furnace and the furnace temperature can be accurately tracked according to a target temperature curve of the steel billets, detect the temperature state of each steel billet, thereby furthest eliminating the situation that the temperature of the steel billets is not mastered for rolling, reducing the impact of the steel billets on steel rolling equipment, and realizing the control, automatic judgment and automatic adjustment of the furnace temperature according to the target temperature curve in the heating process of the steel billets through the working mode of the target temperature curve, thereby achieving the purpose of accurately controlling the temperature rising and falling process of the steel billets.

Corresponding to the control method of the steel rolling heating furnace, the invention also provides electronic equipment. Since the embodiment of the electronic device is similar to the above method embodiment, the description is relatively simple, and please refer to the description of the above method embodiment, and the electronic device described below is only schematic. Fig. 3 is a schematic view of an electronic device according to an embodiment of the present invention.

The electronic device specifically includes: a processor 301 and a memory 302; the memory 302 is used for running one or more program instructions and storing a program of a control method of a rolling heating furnace, and the server is powered on and executes the program of the control method of the rolling heating furnace through the processor 301 to execute any one of the control methods of the rolling heating furnace.

Corresponding to the control method of the steel rolling heating furnace, the invention also provides a computer storage medium. Since the embodiment of the computer storage medium is similar to the above method embodiment, the description is simple, and please refer to the description of the above method embodiment, and the computer storage medium described below is only schematic.

The computer storage medium contains one or more program instructions, and the one or more program instructions are used for the server to execute the control method of the steel rolling heating furnace. The server may refer to a background server corresponding to the electronic device.

In an embodiment of the invention, the processor or processor module may be an integrated circuit chip having signal processing capabilities. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component.

The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The processor reads the information in the storage medium and completes the steps of the method in combination with the hardware.

The storage medium may be a memory, for example, which may be volatile memory or nonvolatile memory, or which may include both volatile and nonvolatile memory.

The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory.

The volatile Memory may be a Random Access Memory (RAM) which serves as an external cache. By way of example and not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (ddr Data Rate SDRAM), Enhanced SDRAM (ESDRAM), synclink DRAM (SLDRAM), and Direct memory bus RAM (DRRAM).

The storage media described in connection with the embodiments of the invention are intended to comprise, without being limited to, these and any other suitable types of memory.

Those skilled in the art will appreciate that the functionality described in the present invention may be implemented in a combination of hardware and software in one or more of the examples described above. When software is applied, the corresponding functionality may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.

The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present invention should be included in the scope of the present invention.