Method, device, equipment, medium and product for determining working path of casting-rolling interface

Abstract

The application discloses a method and device for determining a working path of a casting-rolling interface, equipment, a medium and a product, relates to the field of billet casting and rolling, and comprises the following steps: determining a final working path of a next batch of billets by taking a production path with the lowest total energy consumption in a candidate path set as the final working path; the candidate path set comprises all production paths in which the total running time of the next batch of billets on the production path is less than the remaining time for rolling the current batch of billets by a rough rolling mill and the total temperature drop of the next batch of billets on the production path is less than a preset maximum temperature drop. The application can achieve the effects of optimal process connection and energy saving.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of billet casting and rolling, and particularly relates to a method and device for determining a working path of a casting and rolling interface, equipment, a medium and a product. BACKGROUND

[0002] In the hot rolling process of the steel metallurgy industry, a high-temperature billet is discharged from a steel continuous casting machine cooling bed after cooling, is transported from the steel continuous casting machine cooling bed to a slab yard or a holding pit by a cross car after cooling, and is transported to a heating furnace by a cold charging roller way. Occasionally, due to factory order scheduling problems, the high-temperature billet is cooled from the steel continuous casting machine cooling bed and enters the heating furnace through the hot charging roller way. The above-mentioned transportation methods have long production processes, many links, large steel billet temperature drop heat loss, secondary heating leading to energy waste, and cannot achieve the optimal connection of the process and the energy saving effect. SUMMARY

[0003] The purpose of the present application is to provide a method and device for determining a working path of a casting and rolling interface, equipment, a medium and a product, which can achieve the optimal connection of the process and the energy saving effect.

[0004] To achieve the above-mentioned purpose, the present application provides the following solutions:

[0005] In a first aspect, the present application provides a method for determining a working path of a casting and rolling interface, comprising:

[0006] determining a remaining time for a rough rolling mill to finish rolling a current batch of steel billets according to a production plan of the rough rolling mill;

[0007] determining all production paths corresponding to a next batch of steel billets according to performance characteristics of the next batch of steel billets to be rolled by the rough rolling mill, wherein the production path corresponding to the next batch of steel billets is composed of a plurality of devices on the casting and rolling interface, and a starting point of the production path is a continuous casting machine, a holding pit or a slab yard, and an end point of the production path is the rough rolling mill;

[0008] for any one of the production paths corresponding to the next batch of steel billets, obtaining a total temperature drop of the next batch of steel billets in the production path, a total running time of the next batch of steel billets in the production path and a total energy consumption of the next batch of steel billets in the production path according to a temperature of a surface of the next batch of steel billets when the next batch of steel billets reaches an entrance of a first target device in the production path, a temperature of the surface of the next batch of steel billets when the next batch of steel billets reaches an exit of a second target device in the production path, a running time of each device in the production path except the starting point and the end point and an energy consumption of each device in the production path except the starting point and the end point, wherein the first target device is connected to the exit of the starting point, and the second target device is connected to the entrance of the end point;

[0009] determine the final working path of the next batch of steel billets as the production path with the lowest total energy consumption in the candidate path set; the candidate path set includes all production paths in which the total running time of the next batch of steel billets on the production path is less than the remaining time for the rough rolling mill to finish rolling the current batch of steel billets and the total temperature drop of the next batch of steel billets on the production path is less than the preset maximum temperature drop.

[0010] In a second aspect, the present application provides a casting-rolling interface working path determination device, comprising:

[0011] a remaining time determination module configured to determine the remaining time for the rough rolling mill to finish rolling the current batch of steel billets according to the rough rolling mill production plan;

[0012] a path determination module configured to determine all production paths corresponding to the next batch of steel billets to be rolled by the rough rolling mill according to the performance characteristics of the next batch of steel billets; the production path corresponding to the next batch of steel billets is composed of multiple devices on the casting-rolling interface; the starting point of the production path is the continuous casting machine, the holding pit or the slab yard, and the end point is the rough rolling mill;

[0013] a total temperature drop, total running time and total energy consumption calculation module configured to, for any production path corresponding to the next batch of steel billets, obtain the total temperature drop of the next batch of steel billets on the production path, the total running time of the next batch of steel billets on the production path and the total energy consumption of the next batch of steel billets on the production path according to the temperature of the surface of the next batch of steel billets when the next batch of steel billets reaches the inlet of the first target device in the production path, the temperature of the surface of the next batch of steel billets when the next batch of steel billets reaches the outlet of the second target device in the production path, the running time of each device in the production path except the starting point and the end point and the energy consumption of each device in the production path except the starting point and the end point; the first target device is connected to the outlet of the starting point, and the second target device is connected to the inlet of the end point;

[0014] a final working path determination module configured to determine the final working path of the next batch of steel billets as the production path with the lowest total energy consumption in the candidate path set; the candidate path set includes all production paths in which the total running time of the next batch of steel billets on the production path is less than the remaining time for the rough rolling mill to finish rolling the current batch of steel billets and the total temperature drop of the next batch of steel billets on the production path is less than the preset maximum temperature drop.

[0015] In a third aspect, the present application provides a computer device, comprising a memory, a processor and a computer program stored on the memory and executable on the processor; the processor executes the computer program to implement the casting-rolling interface working path determination method of any one of the above.

[0016] In a fourth aspect, the present application provides a computer readable storage medium, having stored thereon a computer program, which, when executed by a processor, implements the casting-rolling interface working path determination method of any one of the preceding aspects.

[0017] In a fifth aspect, the present application provides a computer program product, comprising a computer program, which, when executed by a processor, implements the casting-rolling interface working path determination method of any one of the preceding aspects.

[0018] According to the specific embodiments provided in the present application, the present application has the following technical effects:

[0019] The present application provides a casting-rolling interface working path determination method, device, equipment, medium and product. First, a candidate path set is obtained according to all production paths in which a total running time of a next batch of billets is less than a remaining time for rolling a current batch of billets by a rough rolling mill and a total temperature drop of the next batch of billets in the production path is less than a preset maximum temperature drop, and then a production path with the lowest total energy consumption in the candidate path set is determined as a final working path of the next batch of billets. The connection relationship between the steelmaking processes and the energy consumption caused by the billet offline cooling are comprehensively considered, and the energy consumption is taken as the target, so that the optimal connection of the processes and the energy saving effect can be achieved. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0021] Figure 1 A flowchart of the casting-rolling interface working path determination method provided by the embodiments of the present application is shown in the figure.

[0022] Figure 2 A casting-rolling interface structure diagram provided by the embodiments of the present application is shown in the figure.

[0023] Figure 3 A principle diagram of the casting-rolling interface working path determination method provided by the embodiments of the present application is shown in the figure.

[0024] Figure 4 A structure diagram of a computer device provided by an embodiment of the present application is shown in the figure.

[0025] Reference signs:

[0026] Continuous casting machine-a, holding pit-b, slab yard-c, heating furnace-d, rough rolling mill-e, first general conveying roller table-1, second general conveying roller table-2, third general conveying roller table-3, holding roller table-4, fourth general conveying roller table-5, reheat roller table-6, fifth general conveying roller table-7, sixth general conveying roller table-8, and seventh general conveying roller table-9. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0028] The above purposes, features and advantages of the present application will be more obvious and easy to understand. The present application will be further described in detail below with reference to the drawings and specific embodiments.

[0029] The existing research on the coordinated operation of the steelmaking-continuous casting interface mainly includes the optimization control of single process, the heat state management of ladle, and the dynamic scheduling of converter-continuous casting production scheduling, all of which are optimized from the perspective of single process or the connection between devices, as follows:

[0030] The utility model patent with the application number 202321085345.2 proposes a multi-mode casting-rolling interface arrangement system, which includes a steelmaking continuous casting machine, a rolling raw material workshop, a heating furnace, a rolling workshop, a steelmaking continuous casting machine cooling bed, a hot charging roller table, a cross car, a cold charging roller table, and a straight rolling roller table. Three operation modes are proposed. The patent enables the short, efficient, and high-speed straight rolling mode to be used in the conventional state of the casting-rolling interface, while retaining the hot charging and cold charging modes as supplementary operation methods. Multiple strands share one heating furnace. However, the patent only considers dynamic scheduling of equipment and provides a multi-mode casting-rolling interface arrangement scheme, including the relative arrangement of multiple devices. It does not discuss in detail how to select a working path during production to ensure optimal connection and energy-saving effects of the process.

[0031] The invention patent with application number 202111628604.7 proposes a slab casting and rolling system and a method for improving the production efficiency of the casting and rolling interface, mainly solving the problem of low production efficiency of the casting and rolling interface in the prior art. The patent provides a connection scheme of a continuous casting machine, a crown block, a conveying roller and a heating furnace, realizes classified production of different steel grades of the continuous casting machine, builds two continuous casting production lines, plans fixed steel grade production lines, and ensures that the first continuous casting machine only produces hot-charged slabs, reduces the influence on direct hot-charging of conventional alloy slabs, and improves the production connection efficiency and hot-charging rate of casting and rolling. From the perspective of the continuous casting machine, the patent solves the problem of production connection of the casting and rolling interface through classified production, judges the next destination of the billet through temperature detection at different stages, realizes parallel production of multiple production lines, and improves the production efficiency of the stationed interface. However, the patent cannot be well applied to arrange production plans, plan different steel production modes in advance, and the energy-saving effect is general.

[0032] The invention patent with application number 202111628604.7 proposes a method for realizing efficient and energy-saving continuous casting and direct rolling. In the patent, the billet roller is transformed into a closed heat preservation roller before the flame cutting machine, and into a heat supplement roller between the flame cutting machine and the sizing, a heat supplement device is added to supplement the heat of the continuous casting billet, and the ordinary transportation roller after sizing is transformed into a heat preservation roller to reduce carbon dioxide emissions and cope with the ultra-low emission policy of the heating furnace; the billet does not need to be heated in the furnace, which can greatly save energy consumption, reduce the emission of carbon dioxide and other pollutants, greatly shorten the production cycle from scrap steel to construction steel, improve the energy utilization efficiency and self-power generation of the enterprise, reduce the process energy consumption, reduce the total energy consumption index of the product, and reduce the operation safety risk of the heating furnace process. However, the patent only considers the optimization of a single process by transforming the roller into a heat preservation roller to reduce the heat loss of the continuous casting billet during roller transportation, and does not optimize the entire process from continuous casting to rolling as a system, which cannot realize optimal control of the continuous casting process.

[0033] Most of the slabs in the slab yard need to be queued after being discharged, the direct charging rate of the continuous casting slab is very low, the hot charging proportion is not high, and the production continuity rate is low.

[0034] Therefore, in one exemplary embodiment, the present application provides a method for determining the working path of the casting and rolling interface, as shown in Figure 1 and Figure 3 The method comprises the following steps, wherein:

[0035] Step 201: determining the remaining time for the rough rolling mill to finish rolling the current batch of steel billets according to the rough rolling mill production plan.

[0036] Step 202: determining all production paths corresponding to the next batch of billets to be rolled by the rough rolling mill according to the performance characteristics of the next batch of billets; the production paths corresponding to the next batch of billets are composed of multiple devices on the casting-rolling interface; the starting point of the production path is the continuous casting machine, the holding pit or the slab yard, and the end point is the rough rolling mill. As shown in FIG. 1, the casting-rolling interface includes the continuous casting machine a, the rough rolling mill e, the holding pit b, the slab yard c, seven ordinary conveying roller tables, the holding roller table 4, the heat supplement roller table 6 and the heating furnace d. The performance characteristics of different steel grades are well known, which generally refer to the mechanical properties, physical properties, process properties and the like of the steel grade. The step of determining the production path according to the performance characteristics is also well known in the art. Figure 2

[0037] Step 203: for any one of the production paths corresponding to the next batch of billets, obtaining the total temperature drop of the next batch of billets in the production path, the total running time of the next batch of billets in the production path and the total energy consumption of the next batch of billets in the production path according to the temperature of the surface of the next batch of billets when the next batch of billets reaches the inlet of the first target device in the production path, the temperature of the surface of the next batch of billets when the next batch of billets reaches the outlet of the second target device in the production path, the running time of the next batch of billets at each device in the production path except the starting point and the end point, and the energy consumption of the next batch of billets at each device in the production path except the starting point and the end point; the first target device is connected to the outlet of the starting point, and the second target device is connected to the inlet of the end point. The devices in the production path except the starting point and the end point are ordinary conveying roller tables, holding roller tables, heat supplement roller tables or heating furnaces.

[0038] Step 204: determining the production path with the lowest total energy consumption in the candidate path set as the final working path of the next batch of billets; the candidate path set includes all production paths in which the total running time of the next batch of billets in the production path is less than the remaining time for the rough rolling mill to roll the current batch of billets and the total temperature drop of the next batch of billets in the production path is less than the preset maximum temperature drop.

[0039] The implementation of the above steps 201 to 204 can achieve the effects of optimal process connection and energy saving.

[0040] In another exemplary embodiment of the present application, after determining all production paths corresponding to the next batch of billets to be rolled by the rough rolling mill according to the performance characteristics of the next batch of billets, the following steps are further included:

[0041] ​The temperature prediction model, the time prediction model and the energy consumption prediction model are constructed; the temperature prediction model comprises an ordinary conveying rollerway temperature prediction model, a holding rollerway temperature prediction model, a supplementary heating rollerway temperature prediction model and a heating furnace temperature prediction model; the time prediction model comprises an ordinary conveying rollerway time prediction model, a holding rollerway time prediction model, a supplementary heating rollerway time prediction model and a heating furnace time prediction model; and the energy consumption prediction model comprises an ordinary conveying rollerway energy consumption prediction model, a holding rollerway energy consumption prediction model, a supplementary heating rollerway energy consumption prediction model and a heating furnace energy consumption prediction model.

[0042] The running time of the next batch of billets on the conveying rollerway, the holding rollerway, the supplementary heating rollerway and the heating furnace, the temperature of the next batch of billets on the surface of the next batch of billets when the next batch of billets reaches the outlet of the conveying rollerway, the holding rollerway, the supplementary heating rollerway and the heating furnace and the energy consumption of the next batch of billets on the conveying rollerway, the holding rollerway, the supplementary heating rollerway and the heating furnace are calculated according to the time prediction model, the temperature prediction model and the energy consumption prediction model to obtain a data set.

[0043] For any one of the production paths corresponding to the next batch of billets, the equipment included in the production path and the running time of the corresponding next batch of billets on each equipment in the production path, the temperature of the next batch of billets on the surface of the next batch of billets when the next batch of billets reaches the outlet of each equipment in the production path and the energy consumption of the next batch of billets on each equipment in the production path are saved according to the data set, and the data stored in the table can be directly read in subsequent calculation of the total temperature drop, the total energy consumption and the total running time.

[0044] In another exemplary embodiment of the present application, the ordinary conveying rollerway temperature prediction model is

[0045]

[0046] wherein c is the specific heat capacity of the billet, m is the mass of the billet, Q 板1 represents the heat lost by the billet on the ordinary conveying rollerway due to temperature change; Q 损1 is the heat lost by the billet on the ordinary conveying rollerway in the heat transfer process, in J; is the heat flow in the heat convection process of the billet on the ordinary conveying rollerway, is the heat flow in the heat radiation process of the billet on the ordinary conveying rollerway, in W; is the average temperature of the surface of the billet when the billet reaches the outlet of the ordinary conveying rollerway, T 01 is the temperature of the surface of the billet when the billet enters the inlet of the ordinary conveying rollerway, in K, t a represents the running time of the billet on the ordinary conveying rollerway; h1 is the convective heat transfer coefficient of the surface of the billet on the ordinary conveying rollerway, Re lm is the Reynolds number, Pr mPr is the Prandtl number, δ is the billet thickness, λ m is the average thermal conductivity of the billet; A1 is the area of the portion of the billet on which heat convection and heat radiation occur on the ordinary conveying roller, in m2 2 ; T f1 is the air temperature at the position of the ordinary conveying roller, in K; T s is the temperature of the billet surface when the billet reaches the outlet of the ordinary conveying roller, in K; ε is the emissivity of the billet surface, which is a constant; C0 is the blackbody radiation coefficient, which has a value of 5.67 W / (m 2 · K 4 ); η1 is the conversion coefficient between the billet surface temperature on the ordinary conveying roller and the average temperature of the billet surface, which is a constant. Therefore, when the second target device is the ordinary conveying roller, T s in the above formula represents the temperature of the billet surface of the next batch when the next batch reaches the outlet of the second target device in the production path, T 01 in the above formula represents the temperature of the billet surface of the next batch when the next batch enters the inlet of the ordinary conveying roller, T f1 in the above formula represents the air temperature at the position of the ordinary conveying roller when the second target device is the ordinary conveying roller, t a in the above formula represents the running time of the next batch in the second target device in the production path when the second target device is the ordinary conveying roller, and the temperature of the billet surface of the next batch when the next batch reaches the outlet of the second target device in the production path is calculated according to the following formula:

[0047]

[0048] In another exemplary embodiment of the present application, the temperature prediction model of the soaking roller is

[0049]

[0050]

[0051] wherein Q 板2 represents the heat lost by the billet on the soaking roller due to temperature change, Q 损2 is the heat lost by the billet on the soaking roller in the heat transfer process, in J; is the average temperature of the billet surface when the billet reaches the outlet of the soaking roller, T 02 is the temperature of the billet surface when the billet enters the inlet of the soaking roller; is the heat flow in the heat convection process of the billet on the soaking roller, is the heat flow in the heat radiation process of the billet on the soaking roller, in W; h2 is the convective heat transfer coefficient of the billet surface on the soaking roller, W / (m 2 2K); D is the equivalent diameter of the billet; A2 is the area of the part of the billet on which heat convection and heat radiation occur on the holding roller, in m 2 2; T f2 is the air temperature at the position of the ordinary transport roller, in K, T m is the temperature of the billet surface when the billet reaches the exit of the holding roller, in K; ε is the emissivity of the billet surface, which is a constant; C0 is the blackbody radiation coefficient, which has a value of 5.67 W / (m 2 2K 4 ), η2 represents the conversion coefficient between the billet surface temperature on the holding roller and the average temperature of the billet surface, t b represents the running time of the billet on the holding roller.

[0052] Therefore, when the second target device is the ordinary transport roller, T m represents the temperature of the billet surface when the next batch of billets reaches the exit of the second target device in the production path when the second target device is the holding roller, T 02 represents the temperature of the billet surface when the next batch of billets enters the entrance of the holding roller when the second target device is the holding roller, T f2 represents the air temperature at the position of the second target device when the second target device is the holding roller, t b represents the running time of the next batch of billets on the second target device in the production path when the second target device is the holding roller, and the temperature of the billet surface when the next batch of billets reaches the exit of the second target device in the production path is calculated according to the following formula:

[0053]

[0054] In another exemplary embodiment of the present application, the heat-supplementing roller temperature prediction model is:

[0055]

[0056]

[0057] wherein Q 板3 represents the heat lost by the billet on the heat-supplementing roller due to temperature change, Q 损3 is the heat lost by the billet on the heat-supplementing roller in the heat transfer process, in J; is the heat flow in the heat convection process of the billet on the heat-supplementing roller, represents the heat flow in the heat conduction process of the billet on the heat-supplementing roller, is the heat flow in the heat radiation process of the billet on the heat-supplementing roller, T is the average surface temperature of the billet on the heating roller bed, T 03 T is the temperature of the billet surface when the billet enters the inlet of the heating roller bed, unit: W; h3 is the convective heat transfer coefficient of the billet surface on the heating roller bed, unit: W / (m 2 ·K), A3 is the area of the billet on the heating roller bed where heat convection and heat radiation occur, and l represents the length of the billet; T f3 T is the air temperature at the location of the heating roller bed, T n T is the temperature of the billet surface when the billet reaches the outlet of the heating roller bed; ε is the emissivity of the billet surface, which is a constant; C0 is the blackbody radiation coefficient, which is 5.67 W / (m 2 ·K 4 ); λ is the thermal conductivity of the billet surface, unit: W / (m·K), and A4 is the area of the billet on the heating roller bed where heat conduction occurs, unit: m 2 , T' g is the roller temperature of the heating roller bed, unit: K, t c represents the running time of the billet on the heating roller bed, and η3 represents the conversion coefficient between the surface temperature of the billet on the heating roller bed and the average temperature of the billet surface, which is a constant. Therefore, in the above formula, T n represents the temperature of the next batch of billet surface when the next batch of billet reaches the outlet of the second target device in the production path when the second target device is a heating roller bed, T 03 represents the temperature of the next batch of billet surface when the next batch of billet enters the inlet of the heating roller bed when the second target device is a heating roller bed, T f3 represents the air temperature at the location of the second target device when the second target device is a heating roller bed, t c represents the running time of the next batch of billet on the second target device in the production path when the second target device is a heating roller bed, and the temperature of the next batch of billet surface when the next batch of billet reaches the outlet of the second target device in the production path is calculated according to the following formula:

[0058]

[0059] In another exemplary embodiment of the present application, the heating furnace temperature prediction model is: the billet discharge temperature should be determined according to the characteristics of the billet, and the set billet discharge temperature, i.e. the temperature of the billet surface when the billet reaches the outlet of the heating furnace, is obtained by querying the billet type.

[0060] In another exemplary embodiment of the present application, the general transport roller bed time prediction model is:

[0061]

[0062] In another example embodiment of the present application, the soaking roller time prediction model is:

[0063]

[0064] In another example embodiment of the present application, the soaking roller time prediction model is:

[0065]

[0066] In another example embodiment of the present application, the soaking roller time prediction model is:

[0067]

[0068] wherein, L a , L b , L c are the lengths of the normal conveying roller, the soaking roller and the heat-supplementing roller respectively, in units of m; v a , v b , v c are the running speeds of the normal conveying roller, the soaking roller and the heat-supplementing roller respectively, in units of m / s, t d is the minimum in-furnace time of the billet, i.e. the running time of the billet in the heating furnace, in units of s; δ is the thickness of the billet, in units of m; α is the thermal conductivity of the billet; T f' is the furnace gas temperature of the heating furnace, T out is the target temperature of the billet upon exiting the heating furnace, i.e. the surface temperature of the billet upon reaching the exit of the heating furnace, T in is the surface temperature of the billet upon reaching the entrance of the heating furnace, in units of °C.

[0069] In another example embodiment of the present application, the normal conveying roller energy consumption prediction model is:

[0070] E a = P 机a t a (17)

[0071] In another example embodiment of the present application, the soaking roller energy consumption prediction model is:

[0072] E b = P 机b t b (18)

[0073] In another example embodiment of the present application, the soaking roller energy consumption prediction model is:

[0074] E c1 = P 机c1 t c ; E c2 = P 机c2 tc ;E b = E c1 + E c2 (19)

[0075] In another exemplary embodiment of the present application, the energy consumption prediction model of the heating furnace roller table is:

[0076] E d = P 机d t d (20)

[0077] wherein P 机a , P 机b , P 机c1 , P 机c2 and P 机d are the electric power of the ordinary conveying roller table, the heat preservation roller table, the heat supplement roller table, the heat supplement device and the heating furnace, respectively, in units of W, and the heat supplement device is arranged on the heat supplement roller table; E a , E b , E c1 , E c2 and E d are the energy consumed by the ordinary conveying roller table, the heat preservation roller table, the heat supplement roller table, the heat supplement device and the heating furnace in the running process, respectively, in units of J.

[0078] Suppose that the casting-rolling interface of the present embodiment is as shown in FIG. 1, and all the production paths corresponding to the next batch of billets are as shown in the first column of Table 1. Figure 2

[0079] The calculation steps of the temperature, time and energy consumption involved in the first working path are as follows: the running time t 11 and t 19 of the billet at the first ordinary conveying roller table 1 and the seventh ordinary conveying roller table 9 in the present working path are calculated according to formula (13), then the temperature of the billet surface when the billet reaches the outlet of the first ordinary conveying roller table 1 and the seventh ordinary conveying roller table 9 in the present working path is calculated according to formula (4), and the corresponding temperature drops ΔT 11 and ΔT 19 are obtained according to the temperature, and the energy consumption E 11 and E 19 of the billet at the first ordinary conveying roller table 1 and the seventh ordinary conveying roller table 9 in the present working path are calculated according to formula (17), which are stored in the table, and the results are shown in Table 1.

[0080] The calculation steps of the temperature, time and energy consumption involved in the second working path are as follows: the running time t 21 and t 25 ​, the temperature of the billet surface when it reaches the exit of the first ordinary conveying roller 1 and the fourth ordinary conveying roller 5 in the working path is calculated according to formula (4), and the corresponding temperature drop ΔT can be obtained according to the temperature 21 and ΔT 25 , the energy consumption E of the billet in the first ordinary conveying roller 1 and the fourth ordinary conveying roller 5 in the working path is calculated according to formula (17) 21 and E 25 . The running time t of the billet in the holding roller 4 in the working path is calculated according to formula (14) 24 , the temperature of the billet surface when it reaches the exit of the holding roller 4 in the working path is calculated according to formula (8), and the corresponding temperature drop ΔT can be obtained according to the temperature 24 , the energy consumption E of the billet in the holding roller 4 in the working path is calculated according to formula (18) 24 , which is stored in the table, and the results are shown in Table 1.

[0081] The calculation steps of temperature, time and energy consumption involved in the third working path are: the running time t of the billet in the first ordinary conveying roller 1 and the fifth ordinary conveying roller 7 in the working path is calculated according to formula (13) 31 and t 37 , the temperature of the billet surface when it reaches the exit of the first ordinary conveying roller 1 and the fifth ordinary conveying roller 7 in the working path is calculated according to formula (4), and the corresponding temperature drop ΔT can be obtained according to the temperature 31 and ΔT 37 , the energy consumption E of the billet in the first ordinary conveying roller 1 and the fifth ordinary conveying roller 7 in the working path is calculated according to formula (17) 31 and E 37 . The running time t of the billet in the heating roller 6 in the working path is calculated according to formula (15) 36 , the temperature of the billet surface when it reaches the exit of the heating roller 6 in the working path is calculated according to formula (12), and the corresponding temperature drop ΔT can be obtained according to the temperature 36 , the energy consumption E of the billet in the heating roller 6 in the working path is calculated according to formula (19) 36 , which is stored in the table, and the results are shown in Table 1.

[0082] The calculation steps of temperature, time and energy consumption involved in the fourth working path are: the running time t of the billet in the first ordinary conveying roller 1 and the sixth ordinary conveying roller 8 in the working path is calculated according to formula (13) 41 and t 48 , the temperature of the billet surface when it reaches the exit of the first ordinary conveying roller 1 and the sixth ordinary conveying roller 8 in the working path is calculated according to formula (4), and the corresponding temperature drop ΔT can be obtained according to the temperature41 and ΔT 48 , the energy consumption E of the billet in the first ordinary conveying roller 1 and the sixth ordinary conveying roller 8 in the current work path is calculated according to formula (17) 41 and E 48 . The corresponding tapping temperature setting is found according to the billet characteristics, the temperature of the billet surface when the billet reaches the outlet of the heating furnace d in the current work path is obtained, and the corresponding temperature drop ΔT is obtained according to the temperature 4d , the temperature of the billet surface when the billet reaches the outlet of the first ordinary conveying roller 1 in the current work path and the temperature of the billet surface when the billet reaches the outlet of the heating furnace d in the current work path are substituted into formula (16) to obtain the running time t of the billet in the heating furnace d in the current work path 4d , the energy consumption E of the billet in the heating furnace d in the current work path is calculated according to formula (20) 4d , which is stored in the table, and the results are shown in Table 1.

[0083] The temperature, time and energy consumption calculation steps involved in the fifth work path are: the running time t of the billet in the second ordinary conveying roller 2 and the fourth ordinary conveying roller 5 in the current work path is calculated according to formula (13) 52 and t 55 , the temperature of the billet surface when the billet reaches the outlet of the second ordinary conveying roller 2 and the fourth ordinary conveying roller 5 in the current work path is calculated according to formula (4), and the corresponding temperature drop ΔT is obtained according to the temperature 52 and ΔT 55 , the energy consumption E of the billet in the second ordinary conveying roller 2 and the fourth ordinary conveying roller 5 in the current work path is calculated according to formula (17) 52 and E 55 . The running time t of the billet in the holding roller 4 in the current work path is calculated according to formula (14) 54 , the temperature of the billet surface when the billet reaches the outlet of the holding roller 4 in the current work path is calculated according to formula (8), and the corresponding temperature drop ΔT is obtained according to the temperature 54 , the energy consumption E of the billet in the holding roller 4 in the current work path is calculated according to formula (18) 54 , which is stored in the table, and the results are shown in Table 1.

[0084] The temperature, time and energy consumption calculation steps involved in the sixth work path are: the running time t of the billet in the second ordinary conveying roller 2 and the fifth ordinary conveying roller 7 in the current work path is calculated according to formula (13) 62 and t 67 , the temperature of the billet surface when the billet reaches the outlet of the second ordinary conveying roller 2 and the fifth ordinary conveying roller 7 in the current work path is calculated according to formula (4), and the corresponding temperature drop ΔT is obtained according to the temperature62 and ΔT 67 , the energy consumption E of the billet in the second ordinary conveying roller 2 and the fifth ordinary conveying roller 7 in the present working path is calculated according to formula (17) 62 and E 67 , the running time t of the billet in the heating roller 6 in the present working path is calculated according to formula (15) 66 , the temperature of the billet surface when the billet reaches the outlet of the heating roller 6 in the present working path is calculated according to formula (12), and the corresponding temperature drop ΔT can be obtained according to the temperature 66 , the energy consumption E of the billet in the heating roller 6 in the present working path is calculated according to formula (19) 66 , which is stored in the table, and the results are shown in Table 1.

[0085] The calculation steps of temperature, time and energy consumption involved in the seventh working path are: the running time t of the billet in the second ordinary conveying roller 2 and the sixth ordinary conveying roller 8 in the present working path is calculated according to formula (13) 72 and t 78 , the temperature of the billet surface when the billet reaches the outlet of the second ordinary conveying roller 2 and the sixth ordinary conveying roller 8 in the present working path is calculated according to formula (4), and the corresponding temperature drop ΔT can be obtained according to the temperature 72 and ΔT 78 , the energy consumption E of the billet in the second ordinary conveying roller 2 and the sixth ordinary conveying roller 8 in the present working path is calculated according to formula (17) 72 and E 78 . According to the characteristics of the billet, the corresponding tapping temperature setting is found, the temperature of the billet surface when the billet reaches the outlet of the heating furnace d in the present working path is obtained, and the corresponding temperature drop ΔT can be obtained according to the temperature 7d , the running time t of the billet in the heating furnace d in the present working path is obtained by substituting the temperature of the billet surface when the billet reaches the outlet of the second ordinary conveying roller 2 in the present working path and the temperature of the billet surface when the billet reaches the outlet of the heating furnace d in the present working path into formula (16) 7d , the energy consumption E of the billet in the heating furnace d in the present working path is calculated according to formula (20) 7d .

[0086] The calculation steps of temperature, time and energy consumption involved in the eighth working path are: the running time t of the billet in the third ordinary conveying roller 3 and the sixth ordinary conveying roller 8 in the present working path is calculated according to formula (13) 83 and t 88 , the temperature of the billet surface when the billet reaches the outlet of the third ordinary conveying roller 3 and the sixth ordinary conveying roller 8 in the present working path is calculated according to formula (4), and the corresponding temperature drop ΔT can be obtained according to the temperature 83 and ΔT88 According to formula (17), the energy consumption E of the billet in the third common conveying roller 3 and the sixth common conveying roller 8 in the current work path is calculated 83 and E 88 According to the billet characteristics, the corresponding tapping temperature setting is found, the temperature of the billet surface when the billet reaches the outlet of the heating furnace d in the current work path is obtained, and the corresponding temperature drop ΔT is obtained according to the temperature 8d The temperature of the billet surface when the billet reaches the outlet of the third common conveying roller 3 in the current work path and the temperature of the billet surface when the billet reaches the outlet of the heating furnace d in the current work path are substituted into formula (16) to obtain the running time t of the billet in the heating furnace d in the current work path 8d According to formula (20), the energy consumption E of the billet in the heating furnace d in the current work path is calculated 8d .

[0087] Table 1

[0088]

[0089] In another exemplary embodiment of the present application, according to the temperature of the next batch of billets when the next batch of billets reaches the inlet of the first target device in the production path, the temperature of the next batch of billets when the next batch of billets reaches the outlet of the second target device in the production path, the running time of the next batch of billets in each device in the production path except the starting point and the ending point, and the energy consumption of the next batch of billets in each device in the production path except the starting point and the ending point, the total temperature drop of the next batch of billets in the production path, the total running time of the next batch of billets in the production path, and the total energy consumption of the next batch of billets in the production path are obtained, specifically including:

[0090] The difference between the temperature of the next batch of billets when the next batch of billets reaches the outlet of the second target device in the production path and the temperature of the next batch of billets when the next batch of billets reaches the inlet of the first target device in the production path is calculated to obtain the total temperature drop of the next batch of billets in the production path.

[0091] The sum of the running time of the next batch of billets in each device in the production path except the starting point and the ending point is calculated to obtain the total running time of the next batch of billets in the production path.

[0092] The sum of the energy consumption of the next batch of billets in each device in the production path except the starting point and the ending point is calculated to obtain the total energy consumption of the next batch of billets in the production path.

[0093] The present application has the following technical effects:

[0094] a) The application determines the operation time of the rolling mill according to the rough rolling mill production plan; a temperature prediction model is established for each section to predict the surface temperature of the billet at the exit of each section; a time prediction model is established for each section to predict the time required for each stage operation; an energy consumption prediction model is established for each section to predict the total energy consumption of each stage; the production path that meets the steel grade is selected, the temperature, time and energy consumption of each path are calculated and recorded in the billet operation record table; according to the rough rolling mill production plan, the operation time of the rolling mill is determined, and the time, temperature and energy consumption are used as the judgment conditions to compare and select the production path with the smallest energy consumption, and an implementation path of the billet is planned in advance through the rough rolling mill production plan, the running time and process temperature drop are used as the constraint conditions, and the minimum energy consumption is used as the target, so that the process of the billet source area, the conveying area and the rough rolling mill is matched, the product quality and the stable operation of the system are ensured, the efficiency of the casting-rolling interface collaborative operation and the production efficiency are improved, and the energy consumption in the production process is reduced.

[0095] b) The application can enable partial steel grades to achieve multiple implementation path connection operation or even simultaneous operation, improve the shift production capacity while ensuring product quality.

[0096] c) When the billet production line fails, the application can quickly adjust the production plan according to the on-site repair situation, arrange the starting time of each device according to the repair time, and improve the production efficiency of the production line.

[0097] In another exemplary embodiment of the application, steel billet D and Figure 2 The casting-rolling interface shown in the figure is taken as an example to describe the method for determining the working path of the casting-rolling interface provided in the above embodiment:

[0098] Steel D, due to its performance characteristics, needs to be cooled and reheated in the holding pit b or the slab storage c before being sent to the rough rolling mill e for rolling. Since the billet has a temperature of 40-100℃ when it is discharged from the slab storage c, the temperature is too low, and the billet cannot reach the rolling temperature through the heat compensation roller 6 and the conveying roller, so there are three production paths, which are path 6, path 7 and path 8 in table 1:

[0099] For path 6:

[0100] The second ordinary conveying roller 2 has a length of L 62 and a speed of v 62 , so the running time of the billet on the second ordinary conveying roller 2 is t 62 , The temperature of steel D when it comes out of the holding pit b is the surface temperature of the billet when it reaches the entrance of the second ordinary conveying roller 2, which is T 62in, according to the general transport roller temperature prediction model, the temperature of the billet surface when the billet reaches the second general transport roller 2 outlet, that is, the temperature of the billet surface when the billet reaches the heat supplement roller 6 inlet T 66in ; the second general transport roller 2 energy consumption calculation, E 62 = P 机62 t 62 .

[0101] Heat supplement roller 6 process analysis: the length of the heat supplement roller 6 is L 66 , the speed is v 66 , and the running time of the billet on the heat supplement roller 6 is t 66 , According to the heat supplement roller 6 temperature prediction model, the temperature of the billet surface when the billet reaches the heat supplement roller 6 outlet is T 67in ; the heat supplement roller 6 energy consumption calculation, E 66 = P 机66 t 66 .

[0102] Fifth general transport roller 7 process analysis: the length of the fifth general transport roller 7 is L 67 , the speed is v 67 , and the running time of the billet on the fifth general transport roller 7 is t 67 , The temperature of the billet surface when the billet reaches the fifth general transport roller 7 inlet is T 67in , and according to the temperature prediction model, the temperature of the billet surface when the billet reaches the fifth general transport roller 7 outlet is T 67out ; the fifth general transport roller 7 energy consumption calculation, E 67 = P 机67 t 67 .

[0103] The total temperature drop of the production path 6 is ΔT6=T 67out -T 62in , the total running time is t6=t 62 +t 66 +t 67 , and the total energy consumption is E6=E 62 +E 66 +E 67 .

[0104] For path 7:

[0105] Second general transport roller 2 process analysis: the length of the second general transport roller 2 is L 72 , the speed is v 72 , and the running time of the billet on the second general transport roller 2 is t 72 , The temperature of the steel grade D coming out of the holding pit b, that is, the temperature of the billet surface when the billet reaches the entrance of the second ordinary conveying roller 2, is T 72in According to the temperature prediction model, the temperature of the billet surface when the billet reaches the exit of the second ordinary conveying roller 2 is T 7din The energy consumption calculation of the second ordinary conveying roller 2 is E 72 = P 机72 t 72 .

[0106] Process analysis of the heating furnace d:

[0107]

[0108] wherein T 78in is determined according to the characteristics of the billet D in the tapping temperature setting, the energy consumption is E 7d = P 机7d t 7d , the temperature drop is ΔT 7d , and the running time is t 7d .

[0109] Process analysis of the sixth ordinary conveying roller 8: The length of the sixth ordinary conveying roller 8 is L 78 , and the speed is v 78 , so the running time of the billet on the sixth ordinary conveying roller 8 is t 78 , The temperature of the billet surface when the billet reaches the entrance of the sixth ordinary conveying roller 8 is T 78in According to the temperature prediction model, the temperature of the billet surface when the billet reaches the exit of the sixth ordinary conveying roller 8 is T 78out The energy consumption calculation of the sixth ordinary conveying roller 8 is E 78 = P 机78 t 78 .

[0110] The total temperature drop of the production path 7 is ΔT7 = T 78out -T 72in , the total running time is t7 = t 72 +t 7d +t 78 , and the total energy consumption is E7 = E 72 +E 7d +E 78 .

[0111] For path 8:

[0112] Process analysis of the third ordinary conveying roller 3: The length of the third ordinary conveying roller 3 is L 83 , and the speed is v 83 , so the running time of the billet on the third ordinary conveying roller 3 is t 83 , The temperature of the steel grade D out of the slab yard c is the temperature of the surface of the billet when it reaches the entrance of the third ordinary conveying roller 3, T 83in According to the temperature prediction model, the temperature of the surface of the billet when it reaches the exit of the third ordinary conveying roller 3 is T 8din ; the energy consumption calculation of the third ordinary conveying roller 3 is E 83 = P 机83 t 83 .

[0113] Process analysis of the heating furnace d:

[0114]

[0115] Wherein, T 88in is determined according to the characteristics of the billet D in the tapping temperature setting, the energy consumption is E 8d = P 机8d t 8d , the temperature drop is ΔT 8d , and the running time is t 8d ;

[0116] Process analysis of the sixth ordinary conveying roller 8: the length of the sixth ordinary conveying roller 8 is L 88 , the speed is v 88 , and the running time of the billet on the sixth ordinary conveying roller 8 is t 88 , The temperature of the surface of the billet when it reaches the entrance of the sixth ordinary conveying roller 8 is T 88in , and according to the temperature prediction model, the temperature of the surface of the billet when it reaches the exit of the sixth ordinary conveying roller 8 is T 88out ; the energy consumption calculation of the sixth ordinary conveying roller 8 is E8 = E 81 +E 8d +E 88 .

[0117] The total temperature drop of the production path 8 is ΔT8 = T 88out -T 83in , the total running time is t8 = t 83 +t 8d +t 88 , and the total energy consumption is E8 = E 83 +E 8d +E 88 .

[0118] It is known that the maximum temperature drop of the steel grade D from the continuous casting machine a to the entry of the rough rolling machine e is ΔT D .

[0119] The paths that can be implemented for steel grade D are all measured and calculated, and the running time, temperature drop and heat loss of each stage are arranged in a table, as shown in Table 2:

[0120] Table 2

[0121]

[0122] According to Table 2, the paths 6, 7 and 8 of steel grade D can all reach the entrance of the rough rolling mill e after t (the remaining time for completing the current batch of steel billets), ΔT D6 >ΔT D >ΔT D7 >ΔT D8 , ΔT D >ΔT D7 , ΔT D >ΔT D8 , the paths 7 and 8 can both smoothly proceed with rolling.Q D7 <Q D8 , the path 7 is more energy-saving, so steel grade D selects the path 7 for rolling.

[0123] Based on the same inventive concept, the embodiments of the present application also provide a continuous casting and rolling interface working path determination device for implementing the above-mentioned continuous casting and rolling interface working path determination method. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme described in the above method, so the specific limitations in one or more continuous casting and rolling interface working path determination device embodiments provided below can refer to the limitations of the continuous casting and rolling interface working path determination method in the above text, which will not be repeated here.

[0124] In an exemplary embodiment, a continuous casting and rolling interface working path determination device is provided, comprising:

[0125] A remaining time determination module is configured to determine the remaining time for the rough rolling mill to finish rolling the current batch of steel billets according to the rough rolling mill production plan.

[0126] A path determination module is configured to determine all production paths corresponding to the next batch of steel billets according to the performance characteristics of the next batch of steel billets to be rolled by the rough rolling mill. The production path corresponding to the next batch of steel billets is composed of multiple devices on the continuous casting and rolling interface; the starting point of the production path is the continuous casting machine, the holding pit or the slab storage; and the end point is the rough rolling mill.

[0127] The total temperature drop, total running time and total energy consumption calculation module is configured to, for any one production path corresponding to the next batch of billets, obtain the total temperature drop of the next batch of billets in the production path, the total running time of the next batch of billets in the production path and the total energy consumption of the next batch of billets in the production path according to the temperature of the surface of the next batch of billets when the next batch of billets reaches the inlet of the first target device in the production path, the temperature of the surface of the next batch of billets when the next batch of billets reaches the outlet of the second target device in the production path, the running time of each device in the production path except the start point and the end point and the energy consumption of each device in the production path except the start point and the end point of the next batch of billets; the first target device is connected with the outlet of the start point, and the second target device is connected with the inlet of the end point.

[0128] The final working path determination module is configured to determine the production path with the lowest total energy consumption in the candidate path set as the final working path of the next batch of billets; the candidate path set includes all production paths in which the total running time of the next batch of billets in the production path is less than the remaining time for rolling the current batch of billets by the rough rolling mill and the total temperature drop of the next batch of billets in the production path is less than the preset maximum temperature drop.

[0129] The roller in the process of conveying the general billets only has the conveying function, and the billets will lose a certain amount of heat in the conveying process, which often leads to the need for reheating in a heating furnace after the billets are discharged from the continuous casting machine so as to make the temperature of the billets reach the temperature required by the subsequent process, thereby increasing the energy loss. Based on this, as an optional implementation manner, as shown in Figure 2 The casting-rolling interface includes a continuous casting machine a, a rough rolling mill e, a holding pit b, a slab storage c, a holding roller 4, a heat supplement roller 6, a heating furnace d and seven conveying rollers.

[0130] The outlet of the continuous casting machine a is connected with the inlet of the seventh ordinary conveying roller 9, the inlet of the heating furnace d, the inlet of the heat supplement roller 6 and the inlet of the holding roller 4 through the first ordinary conveying roller 1.

[0131] The outlet of the holding pit b is connected with the inlet of the heating furnace d, the inlet of the heat supplement roller 6, the inlet of the holding roller 4 and the inlet of the seventh ordinary conveying roller 9 through the second ordinary conveying roller 2.

[0132] The outlet of the holding roller 4 is connected with the inlet of the rough rolling mill e through the fourth conveying roller.

[0133] The outlet of the holding roller 4 is connected with the inlet of the rough rolling mill e through the fourth conveying roller.

[0134] The outlet of the hot-rolling table 6 is connected to the inlet of the roughing mill e by means of a fifth transfer table.

[0135] The outlet of the furnace d is connected to the inlet of the roughing mill e by means of a sixth transfer table.

[0136] The outlet of the seventh transfer table 9 is connected to the inlet of the roughing mill e.

[0137] In an exemplary embodiment, a computer device is provided, which can be a server or a terminal, and an internal structure diagram thereof can be as shown in Figure 4 The computer device includes a processor, a memory, an input / output interface (I / O) and a communication interface. The processor, the memory and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. The processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operating system and the computer program in the non-volatile storage medium to run. The database of the computer device is configured to store cast-rolling interface working path determination data. The input / output interface of the computer device is configured to exchange information between the processor and external devices. The communication interface of the computer device is configured to communicate with external terminals through a network connection. The computer program is executed by the processor to implement a cast-rolling interface working path determination method.

[0138] Those skilled in the art can understand that Figure 4 the structure shown in the figure is only a block diagram of part of the structure related to the scheme of the present application, and does not constitute a limitation on the computer device to which the scheme of the present application is applied. The specific computer device can include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components. In an exemplary embodiment, a computer device is provided, which includes a memory and a processor, and the memory stores a computer program. The processor executes the computer program to implement the above-mentioned method embodiments.

[0139] In an exemplary embodiment, a computer readable storage medium is provided, which stores a computer program. The computer program is executed by a processor to implement the above-mentioned method embodiments.

[0140] In an exemplary embodiment, a computer program product is provided, which includes a computer program. The computer program is executed by a processor to implement the above-mentioned method embodiments.

[0141] It should be noted that the user information (including but not limited to user equipment information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in the present application are all information and data authorized by the user or authorized by all parties, and the collection, use and processing of related data need to comply with relevant regulations.

[0142] In the present application, all actions of obtaining signals, information or data are carried out in compliance with the data protection regulations and policies of the country where the device is located, and with the authorization of the owner of the corresponding device.

[0143] A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer readable storage medium. When the computer program is executed, it can include the processes of the above-mentioned embodiments. Any reference to memory, database or other medium used in the embodiments provided by the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical storage, high-density embedded non-volatile memory, resistive memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration but not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc.

[0144] The database involved in the embodiments provided by the present application can include at least one of a relational database and a non-relational database. The non-relational database can include a distributed database based on blockchain, etc., without being limited thereto. The processor involved in the embodiments provided by the present application can be a general-purpose processor, a central processing unit, a graphics processing unit, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., without being limited thereto.

[0145] Any technical features in the above embodiments can be combined, and for the sake of brevity, not all possible combinations are described above, however, it should be understood that the application encompasses all possible combinations of the technical features described above.

[0146] The principles and implementation manners of the present application are described herein by using specific examples, and the above embodiments are only used to help understand the method of the present application and its core idea; meanwhile, according to the idea of the present application, the specific implementation manners and application scopes will be changed by those skilled in the art. In conclusion, the content of the present specification should not be understood as a limitation of the present application.

Claims

1. A cast-rolling interface working path determination method characterized by, The method for determining the working path of the casting-rolling interface comprises the following steps: determining the remaining time for the rough rolling mill to finish rolling the current batch of billets according to the production plan of the rough rolling mill; determining all the production paths corresponding to the next batch of billets according to the performance characteristics of the next batch of billets to be rolled by the rough rolling mill; the production path corresponding to the next batch of billets is composed of multiple devices on the casting-rolling interface; the starting point of the production path is the continuous casting machine, the holding pit or the slab storage; and the end point of the production path is the rough rolling mill; for any one of the production paths corresponding to the next batch of billets, the total temperature drop of the next batch of billets in the production path, the total running time of the next batch of billets in the production path and the total energy consumption of the next batch of billets in the production path are obtained according to the temperature of the surface of the next batch of billets when the next batch of billets arrives at the inlet of the first target device in the production path, the temperature of the surface of the next batch of billets when the next batch of billets arrives at the outlet of the second target device in the production path, the running time of each device in the production path except the starting point and the end point and the energy consumption of each device in the production path except the starting point and the end point; the first target device is connected with the outlet of the starting point; and the second target device is connected with the inlet of the end point; the production path with the lowest total energy consumption in the candidate path set is determined as the final working path of the next batch of billets; the candidate path set includes all the production paths with the total running time of the next batch of billets in the production path being less than the remaining time for the rough rolling mill to finish rolling the current batch of billets and the total temperature drop of the next batch of billets in the production path being less than the preset maximum temperature drop.

2. The cast roll interface working path determining method according to claim 1, characterized by, when the second target device is a normal conveying roller, the temperature of the surface of the next batch of billets when the next batch of billets arrives at the outlet of the second target device in the production path is calculated according to the following formula: wherein c represents the specific heat capacity of the next batch of billets, m represents the mass of the next batch of billets, η1 represents the conversion coefficient between the surface temperature of the next batch of billets on the ordinary conveying roller and the average surface temperature of the next batch of billets, T s represents the temperature of the surface of the next batch of billets when the second target device is the ordinary conveying roller, T 01 represents the temperature of the surface of the next batch of billets when the second target device is the ordinary conveying roller, h1 represents the convective heat transfer coefficient of the surface of the next batch of billets on the ordinary conveying roller, A1 represents the area of the part of the ordinary conveying roller on which the next batch of billets is subjected to heat convection and heat radiation, T f1 represents the temperature of the air at the location of the second target device when the second target device is the ordinary conveying roller, ε represents the emissivity of the surface of the next batch of billets, C0 represents the blackbody radiation coefficient, t a represents the running time of the next batch of billets in the production path at the second target device when the second target device is the ordinary conveying roller.

3. The cast roll interface working path determining method according to claim 1, characterized by, when the second target device is a heat preservation roller, the temperature of the surface of the next batch of billets when the next batch of billets arrives at the outlet of the second target device in the production path is calculated according to the following formula: wherein c represents the specific heat capacity of the next batch of billets, m represents the mass of the next batch of billets, η2 represents the conversion factor between the surface temperature of the next batch of billets on the holding roller table and the average surface temperature of the next batch of billets, T m represents the temperature of the surface of the next batch of billets when the second target device is the holding roller table, T 02 represents the temperature of the surface of the next batch of billets when the second target device is the holding roller table, h2 represents the convective heat transfer coefficient of the surface of the next batch of billets on the holding roller table, D represents the diameter of the next batch of billets, A2 represents the area of the portion on which the next batch of billets is subjected to heat convection and heat radiation on the holding roller table, T f2 represents the temperature of the air at the location of the second target device when the second target device is the holding roller table, ε represents the emissivity of the surface of the next batch of billets, C0 represents the blackbody radiation coefficient, t b represents the running time of the next batch of billets in the production path at the second target device when the second target device is the holding roller table.

4. The cast roll interface working path determining method according to claim 1, characterized by, when the second target device is a heat supplement roller, the temperature of the surface of the next batch of billets when the next batch of billets arrives at the outlet of the second target device in the production path is calculated according to the following formula: wherein c represents the specific heat capacity of the next batch of billets, m represents the mass of the next batch of billets, η3 represents the conversion factor between the surface temperature of the next batch of billets on the reheating roller and the average surface temperature of the next batch of billets, T n represents the temperature of the surface of the next batch of billets when the second target device is the reheating roller, T 03 represents the temperature of the surface of the next batch of billets when the second target device is the reheating roller, h3 represents the convective heat transfer coefficient of the surface of the next batch of billets on the reheating roller, A3 represents the area of the portion of the reheating roller on which the next batch of billets is subjected to heat convection and heat radiation, T f3 represents the temperature of the surface of the next batch of billets when the second target device is the reheating roller, h3 represents the convective heat transfer coefficient of the surface of the next batch of billets on the reheating roller, A3 represents the area of the portion of the reheating roller on which the next batch of billets is subjected to heat convection and heat radiation, T g represents the temperature of the surface of the next batch of billets when the second target device is the reheating roller, h3 represents the convective heat transfer coefficient of the surface of the next batch of billets on the reheating roller, A3 represents the area of the portion of the reheating roller on which the next batch of billets is subjected to heat convection and heat radiation, T c represents the temperature of the surface of the next batch of billets when the second target device is the reheating roller, h3 represents the convective heat transfer coefficient of the surface of the next batch of billets on the reheating roller, A3 represents the area of the portion of the reheating roller on which the next batch of billets is subjected to heat convection and heat radiation, T 5. The cast roll interface working path determination method according to claim 1, characterized by, the total temperature drop of the next batch of billets in the production path, the total running time of the next batch of billets in the production path and the total energy consumption of the next batch of billets in the production path are obtained according to the temperature of the surface of the next batch of billets when the next batch of billets arrives at the inlet of the first target device in the production path, the temperature of the surface of the next batch of billets when the next batch of billets arrives at the outlet of the second target device in the production path, the running time of each device in the production path except the starting point and the end point and the energy consumption of each device in the production path except the starting point and the end point, specifically comprising the following steps: calculating the difference between the temperature of the surface of the next batch of billets when the next batch of billets arrives at the outlet of the second target device in the production path and the temperature of the surface of the next batch of billets when the next batch of billets arrives at the inlet of the first target device in the production path to obtain the total temperature drop of the next batch of billets in the production path; calculating the sum of the running time of each device in the production path except the start point and the end point of the next batch of steel billets, to obtain the total running time of the next batch of steel billets in the production path; calculating the sum of the energy consumption of each device in the production path except the start point and the end point of the next batch of steel billets, to obtain the total energy consumption of the next batch of steel billets in the production path.

6. A cast-rolling interface working path determination device characterized by comprising: The casting-rolling interface working path determination device comprises: a remaining time determination module configured to determine the remaining time for the rough rolling mill to finish rolling the current batch of steel billets according to the rough rolling mill production plan; a path determination module configured to determine all the production paths corresponding to the next batch of steel billets according to the performance characteristics of the next batch of steel billets to be rolled by the rough rolling mill, wherein the production path corresponding to the next batch of steel billets is composed of multiple devices on the casting-rolling interface; the start point of the production path is the continuous casting machine, the holding pit or the slab storage; and the end point of the production path is the rough rolling mill; a total temperature drop, total running time and total energy consumption calculation module configured to, for any one of the production paths corresponding to the next batch of steel billets, obtain the total temperature drop of the next batch of steel billets in the production path, the total running time of the next batch of steel billets in the production path and the total energy consumption of the next batch of steel billets in the production path according to the temperature of the surface of the next batch of steel billets when the next batch of steel billets reaches the inlet of the first target device in the production path, the temperature of the surface of the next batch of steel billets when the next batch of steel billets reaches the outlet of the second target device in the production path, the running time of each device in the production path except the start point and the end point of the next batch of steel billets, and the energy consumption of each device in the production path except the start point and the end point of the next batch of steel billets; the first target device is connected to the outlet of the start point; and the second target device is connected to the inlet of the end point; a final working path determination module configured to determine the production path with the lowest total energy consumption in the candidate path set as the final working path of the next batch of steel billets, wherein the candidate path set comprises all the production paths in which the total running time of the next batch of steel billets in the production path is less than the remaining time for the rough rolling mill to finish rolling the current batch of steel billets and the total temperature drop of the next batch of steel billets in the production path is less than the preset maximum temperature drop.

7. The cast roll interface path determination apparatus according to claim 6, characterized by, The casting-rolling interface comprises: a continuous casting machine, a rough rolling mill, a holding pit, a slab storage, a holding roller way, a heat supplement roller way, a heating furnace and seven conveying roller ways; the outlet of the continuous casting machine is connected to the inlet of the seventh conveying roller way, the inlet of the heating furnace, the inlet of the heat supplement roller way and the inlet of the holding roller way through the first conveying roller way; the outlet of the holding pit is connected to the inlet of the heating furnace, the inlet of the heat supplement roller way, the inlet of the holding roller way and the inlet of the seventh conveying roller way through the second conveying roller way; the outlet of the slab storage is connected to the inlet of the holding roller way, the inlet of the seventh conveying roller way, the inlet of the heating furnace and the inlet of the heat supplement roller way through the third conveying roller way; the outlet of the holding roller way is connected to the inlet of the rough rolling mill through the fourth conveying roller way; the outlet of the heat supplement roller way is connected to the inlet of the rough rolling mill through the fifth conveying roller way; the outlet of the heating furnace is connected to the inlet of the rough rolling mill through the sixth conveying roller way; the outlet of the seventh conveying roller way is connected to the inlet of the rough rolling mill.

8. A computer device comprising: A memory, a processor, and a computer program stored on the memory and loadable on the processor, characterized in that the processor executes the computer program to implement the method for determining the working path of the casting-rolling interface according to any one of claims 1-5.

9. A computer readable storage medium having stored thereon a computer program, characterized in that, The computer program is executed by the processor to implement the method for determining the working path of the casting-rolling interface according to any one of claims 1-5.

10. A computer program product comprising a computer program, characterized in that, The computer program is executed by the processor to implement the method for determining the working path of the casting-rolling interface according to any one of claims 1-5.

Images