Cast-rolling interface working path determination method and device, equipment, medium and product

Abstract

The invention discloses a cast-rolling interface working path determination method and device, equipment, a medium and a product, and relates to the field of steel billet cast-rolling, and the method comprises the steps that a production path with the lowest total energy consumption in a candidate path set is determined as a final working path of a next batch of steel billets; the candidate path set comprises all production paths in which the total operation time of the next batch of steel billets on the production path is less than the remaining time of rolling the current batch of steel billets by a roughing mill and the total temperature drop of the next batch of steel billets on the production path is less than the preset maximum temperature drop; according to the method, the effects of optimal flow connection and energy conservation can be achieved.

Description

Technical Field

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

[0002] In the hot rolling process of the steel and metallurgical industry, the high-temperature steel billet is cooled from the cooling bed of the steelmaking continuous casting machine and then rolled off the production line. After cooling, the steel billet is transported from the cooling bed of the steelmaking continuous casting machine to the slab warehouse or the insulation pit by a straddle carrier, and then transported to the heating furnace via a cold loading roller conveyor. Due to factory order scheduling issues, the high-temperature steel billet is occasionally cooled from the cooling bed of the steelmaking continuous casting machine and then enters the heating furnace via a hot loading roller conveyor. The above-mentioned transportation method has a long production process and many links, resulting in large heat loss due to the temperature drop of the steel billet, and energy waste caused by secondary heating, which cannot achieve the optimal connection of the process and energy-saving effect. Summary of the invention

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

[0004] To achieve the above objectives, this application provides the following solutions:

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

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

[0007] According to the performance characteristics of the next batch of steel billets to be rolled by the roughing mill, all production paths corresponding to the next batch of steel billets are determined. The production path corresponding to the next batch of steel billets is composed of multiple devices on the casting and rolling interface; the starting point of the production path is the continuous casting machine, the holding pit or the slab warehouse, and the end point is the roughing mill;

[0008] For any production path corresponding to the next batch of steel billets, the total temperature drop of the next batch of steel billets in the production path, the total operation 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 are obtained according to the surface temperature of the next batch of steel billets when the next batch of steel billets arrive at the entrance of the first target equipment in the production path, the surface temperature of the next batch of steel billets when the next batch of steel billets arrive at the exit of the second target equipment in the production path, the operation time of each device other than the starting point and the end point of the next batch of steel billets in the production path, and the energy consumption of each device other than the starting point and the end point of the next batch of steel billets in the production path; the first target equipment is connected to the exit of the starting point, and the second target equipment is connected to the entrance of the end point;

[0009] The production path with the lowest total energy consumption in the candidate path set is determined as the final working path for the next batch of steel billets; the candidate path set includes all 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 roughing mill to complete 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.

[0010] In a second aspect, the present application provides a device for determining a working path of a casting and rolling interface, comprising:

[0011] The remaining time determination module is used to determine the remaining time for the roughing mill to complete rolling the current batch of steel billets according to the roughing mill production plan;

[0012] The path determination module is used 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 roughing mill. The production path corresponding to the next batch of steel billets is composed of multiple devices on the casting and rolling interface; the starting point of the production path is the continuous casting machine, the holding pit or the slab warehouse, and the end point is the roughing mill;

[0013] A total temperature drop, total operation time and total energy consumption calculation module is used to obtain, for any production path corresponding to the next batch of steel billets, the total temperature drop of the next batch of steel billets in the production path, the total operation 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 surface temperature of the next batch of steel billets when the next batch of steel billets arrives at the entrance of the first target device in the production path, the surface temperature of the next batch of steel billets when the next batch of steel billets arrives at the exit of the second target device in the production path, the operation time of each device of the next batch of steel billets in the production path except the starting point and the end point, and the energy consumption of each device of the next batch of steel billets in the production path except the starting point and the end point; 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;

[0014] The final working path determination module is used to determine the production path with the lowest total energy consumption in the candidate path set as the final working path for the next batch of steel billets; the candidate path set includes all 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 roughing mill to complete 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 a 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 in the memory and executable on the processor, wherein the processor executes the computer program to implement any of the above-described methods for determining a working path of a casting-rolling interface.

[0016] In a fourth aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements any of the above-described methods for determining a working path of a casting-rolling interface.

[0017] In a fifth aspect, the present application provides a computer program product, including a computer program, which, when executed by a processor, implements any of the above-mentioned methods for determining the working path of the casting and rolling interface.

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

[0019] The present application provides a method, device, equipment, medium and product for determining the working path of a casting and rolling interface. First, a candidate path set is obtained based on all production paths in which the total operating time of the next batch of steel billets is less than the remaining time for the roughing mill to roll 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 a preset maximum temperature drop. Then, the production path with the lowest total energy consumption in the candidate path set is determined as the final working path for the next batch of steel billets. The connection relationship between the steelmaking processes and the energy consumption caused by the cooling of the steel billets after they go off the line are comprehensively considered. With the goal of minimizing energy consumption, the optimal connection of the processes and energy saving effects can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic flow chart of a method for determining a working path of a casting and rolling interface provided in an embodiment of the present application;

[0022] Figure 2 A structural diagram of the casting and rolling interface provided in the embodiment of the present application;

[0023] Figure 3 A schematic diagram of a method for determining a working path of a casting and rolling interface provided by an embodiment of the present application;

[0024] Figure 4 A schematic diagram of the structure of a computer device provided in one embodiment of the present application.

[0025] Reference numerals:

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

[0027] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0028] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0029] The existing research on the coordinated operation of the steelmaking-continuous casting interface is mainly divided into the optimization control of the single process, the thermal state management of the ladle, and the dynamic scheduling of the converter continuous casting production schedule, all of which are optimized from the perspective of the connection between the single process or the device, as shown below:

[0030] The utility model patent with application number 202321085345.2 proposes a multi-mode casting and rolling interface layout system, including a steelmaking continuous casting machine, a steel rolling raw material workshop, a heating furnace, a steel rolling workshop, a steelmaking continuous casting machine cooling bed, a hot-loading roller table, a cross-car, a cold-loading roller table and a direct rolling roller table, and proposes three operation modes. This patent enables the casting and rolling interface to use a short and efficient direct rolling mode under normal conditions, while retaining the hot-loading and hot-delivery and cold-loading and hot-delivery modes as supplementary operation modes, and multiple binding wires share a heating furnace. However, this patent only considers the dynamic scheduling of equipment, and provides a set of multi-mode casting and rolling interface layout solutions, including the relative settings between multiple equipment. It does not discuss in detail how to select the working path in the production process to ensure the optimal connection and energy-saving effect 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, which mainly solves the problem of low production efficiency of the casting and rolling interface in the prior art. The patent provides a connection scheme for a continuous casting machine, a crane, a conveyor roller and a heating furnace to realize the classified production of continuous casting machines for different steel grades, build two continuous casting production lines, and plan and fix the production lines for each type of steel to ensure that the first continuous casting machine only produces hot-charged slabs, reducing the impact of direct hot charging of conventional alloy slabs, and improving the production connection efficiency and hot charging rate of casting and rolling. From the perspective of the continuous casting machine, this patent solves the production connection problem of the casting and rolling interface through classified production, determines 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 stationing interface. However, this patent cannot be well applied to arranging production plans and planning production modes of different steel grades 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 billet direct rolling. In this patent, the billet discharge roller is transformed into a closed insulation roller before the fire cutting machine, and is transformed into a supplementary heating roller between the fire cutting machine and the cut-to-length machine. A supplementary heating device is added to supplement the heat and raise the temperature of the continuous billet. The ordinary transport roller after the cut-to-length machine is transformed into a heat-insulating roller to reduce carbon dioxide emissions and respond to the ultra-low emission policy of the heating furnace. The billet does not pass through the heating furnace, which can greatly save energy consumption and reduce the emission of pollutants such as carbon dioxide. At the same time, it greatly shortens the production cycle from scrap steel to construction steel, improves the energy utilization efficiency and self-generated electricity of the enterprise, reduces the process energy consumption, reduces the total energy consumption index of the product, and reduces the safety risk of the heating furnace process operation. However, this patent reduces the heat loss of the continuous billet during the roller transportation process by insulating the roller, and only considers the optimization of the single process. It does not coordinate the optimization of the various production units experienced from continuous casting to rolling as a system, and cannot achieve the optimal control of the continuous casting process.

[0033] The vast majority of slabs in the slab warehouse need to be taken off the line and queued up again to enter the furnace. The direct loading rate of continuous casting slabs is very low, the hot loading ratio is not high, and the production continuity rate is low.

[0034] Based on this, the present application provides a method for determining a working path of a casting and rolling interface in an exemplary embodiment, such as Figure 1 and Figure 3 As shown, the following steps are included, wherein:

[0035] Step 201: Determine the remaining time for the roughing mill to complete rolling the current batch of steel billets according to the production plan of the roughing mill.

[0036] Step 202: According to the performance characteristics of the next batch of steel billets to be rolled by the roughing mill, all production paths corresponding to the next batch of steel billets are determined; the production path corresponding to the next batch of steel billets is composed of multiple devices on the casting and rolling interface; the starting point of the production path is the continuous casting machine, the holding pit or the slab warehouse, and the end point is the roughing mill. Figure 2 As shown, the casting and rolling interface includes a continuous casting machine a, a roughing mill e, a holding pit b, a slab warehouse c, 7 common conveying rollers, a holding roller 4, a supplementary heating roller 6 and a heating furnace d. The performance characteristics of different steel grades are well known, generally referring to the mechanical properties, physical properties, process properties, etc. of the steel grades. The steps of determining the production path according to the performance characteristics are also well known in the art.

[0037] Step 203: For any production path corresponding to the next batch of steel billets, according to the surface temperature of the next batch of steel billets when the next batch of steel billets arrive at the entrance of the first target equipment in the production path, the surface temperature of the next batch of steel billets when the next batch of steel billets arrive at the exit of the second target equipment in the production path, the operation time of each equipment except the starting point and the end point of the next batch of steel billets in the production path, and the energy consumption of each equipment except the starting point and the end point of the next batch of steel billets in the production path, the total temperature drop of the next batch of steel billets in the production path, the total operation 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 are obtained; the first target equipment is connected to the exit of the starting point, and the second target equipment is connected to the entrance of the end point. The equipment except the starting point and the end point in the production path is a common conveyor roller, a heat preservation roller, a supplementary heating roller or a heating furnace.

[0038] Step 204: Determine the production path with the lowest total energy consumption in the candidate path set as the final working path for the next batch of steel billets; 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 complete rolling of 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 a preset maximum temperature drop.

[0039] By implementing the above steps 201 to 204, the effects of optimal process connection and energy saving can be achieved.

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

[0041] Construct temperature prediction model, time prediction model and energy consumption prediction model; the temperature prediction model includes the temperature prediction model of ordinary transport roller, the temperature prediction model of insulation roller, the temperature prediction model of supplementary heating roller and the temperature prediction model of heating furnace; the time prediction model includes the time prediction model of ordinary transport roller, the time prediction model of insulation roller, the time prediction model of supplementary heating roller and the time prediction model of heating furnace; the energy consumption prediction model includes the energy consumption prediction model of ordinary transport roller, the energy consumption prediction model of insulation roller, the energy consumption prediction model of supplementary heating roller and the energy consumption prediction model of heating furnace.

[0042] The running time of the next batch of steel billets on the conveying roller, insulation roller, supplementary heating roller and heating furnace is calculated according to the time prediction model, the temperature prediction model and the energy consumption prediction model, the surface temperature of the next batch of steel billets when the next batch of steel billets arrive at the exit of the conveying roller, insulation roller, supplementary heating roller and heating furnace and the energy consumption of the next batch of steel billets on the conveying roller, insulation roller, supplementary heating roller and heating furnace are obtained to obtain a data set.

[0043] For any production path among all production paths corresponding to the next batch of steel billets, the equipment included in the production path and the corresponding running time of each equipment in the production path for the next batch of steel billets, the surface temperature of the next batch of steel billets when the next batch of steel billets arrive at the outlet of each equipment in the production path, and the energy consumption of each equipment in the production path for the next batch of steel billets are saved according to the data set. When calculating the total temperature drop, total energy consumption and total running time later, the data stored in the table can be directly read.

[0044] In another exemplary embodiment of the present application, the temperature prediction model of the common transport roller is:

[0045]

[0046] Among them, c is the specific heat capacity of the steel billet, m is the mass of the steel billet, Q 板1 Represents the heat lost by the billet due to temperature change on the ordinary transport roller; Q 损1 It is the heat lost by the billet during heat transfer on the ordinary transport roller, in J; is the heat flux during the heat convection process of the steel billet on the ordinary transport roller. It is the heat flux during the heat radiation process of the steel billet on the ordinary transport roller, the unit is W; is the average surface temperature of the billet when it reaches the exit of the ordinary transport roller, T 01 It is the surface temperature of the steel billet when it enters the entrance of the ordinary transport roller, in K, t a It indicates the running time of the billet on the ordinary transport roller; h1 is the convection heat transfer coefficient of the billet surface on the ordinary transport roller. Re lm is the Reynolds number, Pr mis the Prandtl number, δ is the billet thickness, λ m is the average thermal conductivity of the billet; A1 is the area of ​​the billet on the ordinary transport roller where heat convection and heat radiation occur, in m 2 ; T f1 is the air temperature at the location of the common transport roller, in K; T s is the temperature of the billet surface when it reaches the exit of the ordinary transport roller, in K; ε is the emissivity of the billet surface, which is a constant; C0 is the blackbody radiation coefficient, which is 5.67W / (m 2 ·K 4 );η1 is the conversion coefficient between the surface temperature of the steel billet on the ordinary transport roller and the average surface temperature of the steel billet, which is a constant. Therefore, when the second target device is an ordinary transport roller, T in the above formula s represents the surface temperature of the next batch of steel billets when the next batch of steel billets arrives at the outlet of the second target device in the production path when the second target device is a common transport roller, T 01 It represents the surface temperature of the next batch of steel billets when the next batch of steel billets enters the entrance of the ordinary transport roller when the second target device is an ordinary transport roller. f1 It indicates the air temperature at the location of the second target device when the second target device is a common transport roller, t a It indicates that when the second target device is a common transport roller, the running time of the second target device of the next batch of steel billets in the production path, and the surface temperature of the next batch of steel billets when the next batch of steel billets arrives at 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 insulation roller is:

[0049]

[0050]

[0051] Among them, Q 板2 Represents the heat loss of the billet due to temperature change on the insulation roller, Q 损2 It is the heat lost by the billet during heat transfer on the insulation roller, in J; is the average surface temperature of the billet when it reaches the outlet of the insulation roller, T 02 It is the surface temperature of the steel billet when it enters the entrance of the insulation roller; is the heat flux during the heat convection process of the steel billet on the insulation roller table, is the heat flux during the heat radiation process of the billet on the insulation roller, the unit is W; h2 is the convection heat transfer coefficient of the billet surface on the insulation roller, The unit is W / (m 2 ·K); D is the equivalent diameter of the billet; A2 is the area of ​​the billet on the insulation roller where heat convection and heat radiation occur, in m 2 ; T f2 is the air temperature at the location of the common transport roller, in K, T m is the surface temperature of the billet when it reaches the outlet of the insulation roller, in K; ε is the surface emissivity of the billet, which is a constant; C0 is the blackbody radiation coefficient, which is 5.67W / (m 2 ·K 4 ), η2 represents the conversion coefficient between the surface temperature of the billet on the insulation roller and the average surface temperature of the billet, t b Indicates the running time of the steel billet on the insulation roller.

[0052] Therefore, when the second target device is a common transport roller, T in the above formula is m represents the surface temperature of the next batch of steel billets when the next batch of steel billets arrives at the outlet of the second target device in the production path when the second target device is a heat preservation roller, T 02 It indicates the surface temperature of the next batch of steel billets when the next batch of steel billets enters the entrance of the insulation roller when the second target device is the insulation roller. f2 Indicates the air temperature at the location of the second target device when the second target device is a heat preservation roller. b It indicates that when the second target device is a heat preservation roller, the running time of the second target device of the next batch of steel billets in the production path, when the second target device is a heat preservation roller, the surface temperature of the next batch of steel billets when the next batch of steel billets arrives at the outlet 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 temperature prediction model of the heating roller is:

[0055]

[0056]

[0057] Among them, Q 板3 represents the heat lost by the billet on the heating roller due to temperature change, Q 损3 It is the heat lost by the billet during the heat transfer process on the heating roller, in J; is the heat flux during the heat convection process of the billet on the heating roller. Indicates the heat flow during the heat conduction process of the steel billet on the heating roller. is the heat flux during the heat radiation process of the billet on the heating roller. is the average surface temperature of the steel billet on the heating roller, T 03 is the temperature of the billet surface when it enters the entrance of the supplementary heating roller, in W; h3 is the convection heat transfer coefficient of the billet surface on the supplementary heating roller, The unit is W / (m 2 ·K), A3 is the area of ​​the heat convection and heat radiation of the billet on the heating roller, l is the length of the billet; T f3 is the air temperature at the location of the heating roller, T n is the temperature of the billet surface when it reaches the outlet of the heating roller; ε is the billet surface emissivity, which is a constant; C0 is the blackbody radiation coefficient, which is 5.67W / (m 2 ·K 4 ), λ is the thermal conductivity of the billet surface, in W / (m·K), A4 is the area of ​​the heat conduction part of the billet on the heating roller, in m 2 , T' g is the roller temperature of the heating roller, in K, t c represents the running time of the billet on the heating roller, and η3 represents the conversion coefficient between the billet surface temperature on the heating roller and the average billet surface temperature, which is a constant. Therefore, when the second target device is the insulation roller, in the above formula, T n It represents the surface temperature of the next batch of steel billets when the next batch of steel billets arrives at the outlet of the second target device in the production path when the second target device is a heating roller, T 03 It represents the surface temperature of the next batch of steel billets when the next batch of steel billets enters the entrance of the supplementary heating roller when the second target device is the supplementary heating roller. f3 Indicates the air temperature at the location of the second target device when the second target device is a heating roller, t c It indicates that when the second target device is a heating roller, the operation time of the second target device of the next batch of steel billets in the production path, and the surface temperature of the next batch of steel billets when the next batch of steel billets arrives at 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 out-of-furnace temperature of each billet should be determined according to the characteristics of the billet, and the setting of the out-of-furnace temperature of the billet is queried according to the type of billet, that is, the temperature of the billet surface when the billet arrives at the outlet of the heating furnace.

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

[0061]

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

[0063]

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

[0065]

[0066] In another exemplary embodiment of the present application, the heating furnace time prediction model is:

[0067]

[0068] Among them, L a , L b , L c They are the lengths of the common transport roller, insulation roller and supplementary heating roller, in meters; v a 、v b 、v c They are the running speeds of the common transport roller, insulation roller and heating roller respectively, in m / s, t d is the minimum time of the billet in the furnace, i.e., the operation time of the billet in the heating furnace, in seconds; δ is the thickness of the billet, in meters; α is the thermal conductivity of the billet; T f' is the furnace gas temperature of the heating furnace, T out T is the target temperature of the billet out of the furnace, that is, the surface temperature of the billet when it reaches the outlet of the heating furnace, in It is the surface temperature of the steel billet when it reaches the entrance of the heating furnace, in degrees Celsius.

[0069] In another exemplary embodiment of the present application, the energy consumption prediction model of a common transport roller is:

[0070] E a =P 机a t a (17)

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

[0072] E b =P 机b t b (18)

[0073] In another exemplary embodiment of the present application, the energy consumption prediction model of the heating roller 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 heating furnace roller energy consumption prediction model is:

[0076] E d =P 机d t d (20)

[0077] Among them, P 机a , P 机b , P 机c1 , P 机c2 and P 机d E are the electrical power of the common transport roller, insulation roller, supplementary heating roller, supplementary heating device and heating furnace, in W. The supplementary heating device is set on the supplementary heating roller; a 、E b 、E c1 、E c2 and E d They are the energy consumed by the common transport roller, insulation roller, supplementary heating roller, supplementary heating device and heating furnace during operation, and the unit is J.

[0078] Assume that the casting and rolling interface of this embodiment is as follows Figure 2 As shown, all production paths corresponding to the next batch of steel billets are shown in the first column of Table 1.

[0079] The temperature, time and energy consumption calculation steps involved in the first working path are as follows: According to formula (13), the running time t of the first common conveyor roller 1 and the seventh common conveyor roller 9 of the billet in this working path is calculated: 11 and t 19 Then, according to formula (4), the surface temperature of the billet when it reaches the exit of the first common conveyor roller 1 and the seventh common conveyor roller 9 in this working path is calculated. According to the temperature, the corresponding temperature drop ΔT can be obtained. 11 and ΔT 19 According to formula (17), the energy consumption E of the first common conveyor roller 1 and the seventh common conveyor roller 9 of the billet in this working path is calculated: 11 and E 19 , and store it in the table. The results are shown in Table 1.

[0080] The temperature, time and energy consumption calculation steps involved in the second working path are as follows: According to formula (13), the running time t of the first common conveyor roller 1 and the fourth common conveyor roller 5 of the steel billet in this working path is calculated: 21 and t 25According to formula (4), the surface temperature of the billet when it reaches the exit of the first common conveyor roller 1 and the fourth common conveyor roller 5 in this working path is calculated. According to the temperature, the corresponding temperature drop ΔT can be obtained. 21 and ΔT 25 According to formula (17), the energy consumption E of the first common conveyor roller 1 and the fourth common conveyor roller 5 of the billet in this working path is calculated: 21 and E 25 According to formula (14), the running time t of the heat preservation roller 4 of the steel billet in this working path is calculated: 24 According to formula (8), the surface temperature of the billet when it reaches the exit of the insulation roller 4 in this working path is calculated. According to the temperature, the corresponding temperature drop ΔT can be obtained. 24 According to formula (18), the energy consumption E of the heat preservation roller 4 of the steel billet in this working path is calculated 24 , and store it in the table. The results are shown in Table 1.

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

[0082] The temperature, time and energy consumption calculation steps involved in the fourth working path are as follows: According to formula (13), the running time t of the first common conveyor roller 1 and the sixth common conveyor roller 8 of the steel billet in this working path is calculated: 41 and t 48 According to formula (4), the surface temperature of the billet when it reaches the exit of the first common conveyor roller 1 and the sixth common conveyor roller 8 in this working path is calculated. According to the temperature, the corresponding temperature drop ΔT can be obtained.41 and ΔT 48 According to formula (17), the energy consumption E of the first common conveyor roller 1 and the sixth common conveyor roller 8 of the billet in this working path is calculated: 41 and E 48 According to the characteristics of the steel billet, find the corresponding furnace temperature setting, and get the temperature of the steel billet surface when it reaches the outlet of the heating furnace d in this working path. According to the temperature, the corresponding temperature drop ΔT can be obtained. 4d Substitute the surface temperature of the billet when it reaches the exit of the first common conveyor roller 1 in this working path and the surface temperature of the billet when it reaches the exit of the heating furnace d in this working path into formula (16) to obtain the operating time t of the heating furnace d in this working path. 4d According to formula (20), the energy consumption E of the heating furnace d in the billet in this working path is calculated 4d , and store it in the table. The results are shown in Table 1.

[0083] The steps for calculating the temperature, time and energy consumption involved in the fifth working path are as follows: According to formula (13), the running time t of the second common conveyor roller 2 and the fourth common conveyor roller 5 of the steel billet in this working path is calculated: 52 and t 55 According to formula (4), the surface temperature of the billet when it reaches the exit of the second common conveyor roller 2 and the fourth common conveyor roller 5 in this working path is calculated. According to the temperature, the corresponding temperature drop ΔT can be obtained. 52 and ΔT 55 According to formula (17), the energy consumption E of the second common conveyor roller 2 and the fourth common conveyor roller 5 of the billet in this working path is calculated: 52 and E 55 According to formula (14), the running time t of the heat preservation roller 4 of the steel billet in this working path is calculated: 54 According to formula (8), the surface temperature of the billet when it reaches the exit of the insulation roller 4 in this working path is calculated. According to the temperature, the corresponding temperature drop ΔT can be obtained. 54 According to formula (18), the energy consumption E of the heat preservation roller 4 of the steel billet in this working path is calculated 54 , and store it in the table. The results are shown in Table 1.

[0084] The temperature, time and energy consumption calculation steps involved in the sixth working path are as follows: According to formula (13), the running time t of the second common conveyor roller 2 and the fifth common conveyor roller 7 of the steel billet in this working path is calculated: 62 and t 67 According to formula (4), the surface temperature of the billet when it reaches the exit of the second common conveyor roller 2 and the fifth common conveyor roller 7 in this working path is calculated. According to the temperature, the corresponding temperature drop ΔT can be obtained.62 and ΔT 67 According to formula (17), the energy consumption E of the second common conveyor roller 2 and the fifth common conveyor roller 7 of the steel billet in this working path is calculated. 62 and E 67 According to formula (15), the running time t of the heating roller 6 of the billet in this working path is calculated: 66 According to formula (12), the surface temperature of the billet when it reaches the outlet of the heating roller 6 in this working path is calculated. According to the temperature, the corresponding temperature drop ΔT can be obtained. 66 According to formula (19), the energy consumption E of the steel billet heating roller 6 in this working path is calculated: 66 , and store it in the table. The results are shown in Table 1.

[0085] The temperature, time and energy consumption calculation steps involved in the seventh working path are as follows: According to formula (13), the running time t of the second common conveyor roller 2 and the sixth common conveyor roller 8 of the steel billet in this working path is calculated: 72 and t 78 According to formula (4), the surface temperature of the billet when it reaches the exit of the second common conveyor roller 2 and the sixth common conveyor roller 8 in this working path is calculated. According to the temperature, the corresponding temperature drop ΔT can be obtained. 72 and ΔT 78 According to formula (17), the energy consumption E of the second common conveyor roller 2 and the sixth common conveyor roller 8 of the steel billet in this working path is calculated. 72 and E 78 According to the characteristics of the steel billet, find the corresponding furnace temperature setting, and get the temperature of the steel billet surface when it reaches the outlet of the heating furnace d in this working path. According to the temperature, the corresponding temperature drop ΔT can be obtained. 7d Substitute the surface temperature of the steel billet when it reaches the exit of the second common conveyor roller 2 in this working path and the surface temperature of the steel billet when it reaches the exit of the heating furnace d in this working path into formula (16) to obtain the operating time t of the steel billet in the heating furnace d in this working path 7d According to formula (20), the energy consumption E of the heating furnace d in the billet in this working path is calculated 7d .

[0086] The temperature, time and energy consumption calculation steps involved in the eighth working path are as follows: According to formula (13), the running time t of the third common conveyor roller 3 and the sixth common conveyor roller 8 of the steel billet in this working path is calculated: 83 and t 88 According to formula (4), the surface temperature of the billet when it reaches the exit of the third common conveyor roller 3 and the sixth common conveyor roller 8 in this working path is calculated. According to the temperature, the corresponding temperature drop ΔT can be obtained. 83 and ΔT88 According to formula (17), the energy consumption E of the third common conveyor roller 3 and the sixth common conveyor roller 8 of the billet in this working path is calculated: 83 and E 88 According to the characteristics of the steel billet, find the corresponding furnace temperature setting, and get the temperature of the steel billet surface when it reaches the outlet of the heating furnace d in this working path. According to the temperature, the corresponding temperature drop ΔT can be obtained. 8d Substitute the surface temperature of the steel billet when it reaches the exit of the third common conveyor roller 3 in this working path and the surface temperature of the steel billet when it reaches the exit of the heating furnace d in this working path into formula (16) to obtain the operating time t of the heating furnace d in this working path. 8d According to formula (20), the energy consumption E of the heating furnace d in the billet in this working path is calculated 8d .

[0087] Table 1

[0088]

[0089] In another exemplary embodiment of the present application, according to the surface temperature of the next batch of steel billets when the next batch of steel billets arrives at the entrance of the first target device in the production path, the surface temperature of the next batch of steel billets when the next batch of steel billets arrives at the exit of the second target device in the production path, the operation time of each device of the next batch of steel billets in the production path except the starting point and the end point, and the energy consumption of each device of the next batch of steel billets in the production path except the starting point and the end point, the total temperature drop of the next batch of steel billets in the production path, the total operation 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 are obtained, specifically including:

[0090] Calculate the difference between the surface temperature of the next batch of steel billets when the next batch of steel billets arrives at the outlet of the second target equipment in the production path and the surface temperature of the next batch of steel billets when the next batch of steel billets arrives at the inlet of the first target equipment in the production path, and obtain the total temperature drop of the next batch of steel billets in the production path.

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

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

[0093] This application has the following technical effects:

[0094] a) The present application specifies the operation time of the rolling mill when rolling the steel billet according to the production plan of the rough rolling mill; establishes a temperature prediction model for each section to predict the temperature of the steel billet surface at the exit of each section; establishes a time prediction model for each section to predict the time required for the operation of each stage; establishes an energy consumption prediction model for each section to predict the total energy consumed in each stage; selects a production path that meets the steel grade, predicts and calculates the temperature, time and energy consumption for each path, and records them in the steel billet operation record sheet; specifies the operation time of the rolling mill when rolling the steel billet according to the production plan of the rough rolling mill, compares the steel billet operation record sheet, uses time, temperature and energy consumption as judgment conditions, compares and selects a production path with lower energy consumption, plans an implementation path for the billet in advance through the production plan of the rough rolling mill, uses the operation time and process temperature drop as constraints, and takes the minimum energy consumption as the goal, thereby realizing the process coordination matching of the billet source area, the conveying area, and the rough rolling mill, while ensuring product quality and stable operation of the system, improving the coordinated operation efficiency and production efficiency of the casting and rolling interface, and reducing the energy consumption of the production process.

[0095] b) This application enables some steel grades to achieve multiple implementation paths for connection and even simultaneous operation, thereby increasing shift production while ensuring product quality.

[0096] c) When a steel billet production line fails, the present application can quickly adjust the production plan temporarily according to the on-site repair situation, arrange the start-up 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 present application, a steel billet D and Figure 2 The casting and rolling interface shown is used as an example to illustrate the method for determining the working path of the casting and rolling interface provided in the above embodiment:

[0098] For steel type D, due to its performance characteristics, the billet needs to be cooled and reheated in the insulation pit b or slab warehouse c before being sent to the rough rolling mill e for rolling. Because the billet temperature out of the slab warehouse c is generally 40-100°C, the temperature is too low to reach the billet rolling temperature through the supplementary heating roller 6 and the conveying roller. Therefore, there are three production paths, namely path 6, path 7 and path 8 in Table 1:

[0099] For path 6:

[0100] The length of the second common conveyor roller 2 is L 62 , the speed is v 62 , it can be obtained that the running time of the steel billet on the second ordinary conveyor roller 2 is t 62 , The temperature of steel type D coming out of the insulation pit b, that is, the surface temperature of the steel billet when it reaches the entrance of the second ordinary conveyor roller 2, is T 62inAccording to the temperature prediction model of the common transport roller, the surface temperature of the steel billet when it reaches the exit of the second common transport roller 2 is T, which is the surface temperature of the steel billet when it reaches the entrance of the supplementary heating roller 6. 66in ; Energy consumption calculation of the second common conveyor roller 2, E 62 =P 机62 t 62 .

[0101] Process analysis of heating roller 6: The length of heating roller 6 is L 66 , the speed is v 66 , the running time of the billet on the heating roller 6 is t 66 , According to the temperature prediction model of the heating roller 6, the surface temperature of the steel billet when it reaches the outlet of the heating roller 6 is T 67in ; Energy consumption calculation of heating roller 6, E 66 =P 机66 t 66 .

[0102] Process analysis of the fifth common conveyor roller 7: The length of the fifth common conveyor roller 7 is L 67 , the speed is v 67 , it can be obtained that the running time of the steel billet on the fifth common conveyor roller 7 is t 67 , When the billet reaches the entrance of the fifth common conveyor roller 7, the surface temperature of the billet is T 67in According to the temperature prediction model, the surface temperature of the billet when it reaches the exit of the fifth common conveyor roller 7 is T 67out ; Energy consumption calculation of the fifth common conveyor roller 7, E 67 =P 机67 t 67 .

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

[0104] For path 7:

[0105] Process analysis of the second common conveyor roller 2: The length of the second common conveyor roller 2 is L 72 , the speed is v 72 , it can be obtained that the running time of the steel billet on the second ordinary conveyor roller 2 is t 72 , The temperature of steel type D coming out of the insulation pit b, that is, the surface temperature of the steel billet when it reaches the entrance of the second ordinary conveyor roller 2, is T 72in According to the temperature prediction model, the surface temperature of the billet when it reaches the exit of the second ordinary conveyor roller 2 is T 7din ; Energy consumption calculation of the second common conveyor roller 2, E 72 =P 机72 t 72 .

[0106] Heating furnace d process analysis:

[0107]

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

[0109] Process analysis of the sixth common conveyor roller 8: The length of the sixth common conveyor roller 8 is L 78 , the speed is v 78 , it can be obtained that the running time of the steel billet on the sixth common conveyor roller 8 is t 78 , When the billet reaches the entrance of the sixth common conveyor roller 8, the surface temperature of the billet is T 78in According to the temperature prediction model, the surface temperature of the billet when it reaches the exit of the sixth common conveyor roller 8 is T 78out ; Energy consumption calculation of the sixth common conveyor roller 8, E 78 =P 机78 t 78 .

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

[0111] For path 8:

[0112] The third common conveyor roller 3 process analysis: The length of the third common conveyor roller 3 is L 83 , the speed is v 83 , it can be obtained that the running time of the billet on the third common conveyor roller 3 is t 83 , The temperature of steel type D coming out of slab warehouse c, that is, the surface temperature of the slab when it reaches the entrance of the third common conveyor roller 3, is T 83in According to the temperature prediction model, the surface temperature of the billet when it reaches the exit of the third common conveyor roller 3 is T 8din ; Energy consumption calculation of the third common conveyor roller 3, E 83 =P 机83 t 83 .

[0113] Heating furnace d process analysis:

[0114]

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

[0116] Process analysis of the sixth common conveyor roller 8: The length of the sixth common conveyor roller 8 is L 88 , the speed is v 88 , it can be obtained that the running time of the steel billet on the sixth common conveyor roller 8 is t 88 , When the billet reaches the entrance of the sixth common conveyor roller 8, the surface temperature of the billet is T 88in According to the temperature prediction model, the surface temperature of the billet when it reaches the exit of the sixth common conveyor roller 8 is T 88out ; The sixth common conveyor roller 8 energy consumption calculation, E8 = E 81 +E 8d +E 88 .

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

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

[0119] All feasible paths for steel grade D were measured and calculated, and the operating time, temperature drop and heat loss of each stage were sorted out 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 roughing mill e after t (the remaining time to complete the current batch of steel billets), ΔT D6 >ΔT D >ΔT D7 >ΔT D8 , ΔT D >ΔT D7 , ΔT D >ΔT D8 , both path 7 and path 8 can be rolled smoothly. D7 D8 Path 7 is more energy-efficient, so steel type D chooses path 7 for rolling.

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

[0124] In an exemplary embodiment, a device for determining a working path of a casting-rolling interface is provided, comprising:

[0125] The remaining time determination module is used to determine the remaining time for the roughing mill to complete rolling the current batch of steel billets according to the roughing mill production plan.

[0126] The path determination module is used 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 roughing mill. The production path corresponding to the next batch of steel billets is composed of multiple devices on the casting and rolling interface; the starting point of the production path is the continuous casting machine, the holding pit or the slab warehouse, and the end point is the roughing mill.

[0127] ​A total temperature drop, total operating time and total energy consumption calculation module is used to obtain, for any production path corresponding to the next batch of steel billets, the total temperature drop of the next batch of steel billets in the production path, the total operating 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 surface temperature of the next batch of steel billets when the next batch of steel billets arrives at the entrance of the first target equipment in the production path, the surface temperature of the next batch of steel billets when the next batch of steel billets arrives at the exit of the second target equipment in the production path, the operating time of each device of the next batch of steel billets in the production path except the starting point and the end point, and the energy consumption of each device of the next batch of steel billets in the production path except the starting point and the end point; the first target equipment is connected to the exit of the starting point, and the second target equipment is connected to the entrance of the end point.

[0128] The final working path determination module is used to determine the production path with the lowest total energy consumption in the candidate path set as the final working path for the next batch of steel billets; the candidate path set includes all 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 roughing mill to complete 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 a preset maximum temperature drop.

[0129] Generally, the roller conveyor only has the function of conveying billets during the conveying process. The billets will have a certain amount of heat loss during this transportation process, which often results in the billets needing to be reheated in the heating furnace after coming out of the continuous casting machine in order to make the billet temperature reach the temperature required for the subsequent process, increasing energy loss. Based on this, as an optional implementation method, Figure 2 As shown, the casting and rolling interface includes: a continuous casting machine a, a rough rolling mill e, a holding pit b, a slab warehouse c, a holding roller 4, a supplementary heating roller 6, a heating furnace d and 7 conveying rollers.

[0130] The outlet of the continuous casting machine a is connected to the inlet of the seventh common conveying roller 9 , the inlet of the heating furnace d , the inlet of the supplementary heating roller 6 , and the inlet of the insulation roller 4 through the first common conveying roller 1 .

[0131] The outlet of the insulation pit b is connected to the entrance of the heating furnace d, the entrance of the supplementary heating roller 6, the entrance of the insulation roller 4 and the entrance of the seventh ordinary conveying roller 9 through the second ordinary conveying roller 2.

[0132] The outlet of the slab storage c is connected to the entrance of the insulation roller 4, the entrance of the seventh common conveying roller 9, the entrance of the heating furnace d and the entrance of the supplementary heating roller 6 through the third conveying roller.

[0133] The outlet of the heat-insulating roller table 4 is connected to the inlet of the roughing mill e through the fourth conveying roller table.

[0134] The outlet of the supplementary heating roller table 6 is connected to the inlet of the rough rolling mill e through the fifth conveying roller table.

[0135] The outlet of the heating furnace d is connected to the inlet of the rough rolling mill e through the sixth conveyor roller.

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

[0137] In an exemplary embodiment, a computer device is provided. The computer device may be a server or a terminal. The internal structure diagram thereof may be as follows: Figure 4 As shown. The computer device includes a processor, a memory, an input / output interface (Input / Output, referred to as 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 used 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 operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store data for determining the working path of the casting and rolling interface. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a method for determining the working path of the casting and rolling interface is implemented.

[0138] Those skilled in the art will understand that Figure 4 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may 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, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the above-mentioned method embodiments when executing the computer program.

[0139] In an exemplary embodiment, a computer-readable storage medium is provided, storing a computer program, and when the computer program is executed by a processor, the above-mentioned method embodiments are implemented.

[0140] In an exemplary embodiment, a computer program product is provided, including a computer program, and when the computer program is executed by a processor, the above-mentioned method embodiments are implemented.

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

[0142] In this application, all actions to obtain signals, information or data are carried out in compliance with the relevant data protection laws and policies of the country where they are located and with the authorization given by the owner of the corresponding device.

[0143] Those 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 instructing the relevant hardware through a computer program, and 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 embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in 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 memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM may be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM).

[0144] The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. The non-relational database may include a distributed database based on blockchain, etc., but is not limited thereto. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but is not limited thereto.

[0145] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0146] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. At the same time, for those skilled in the art, according to the ideas of this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this application.

Claims

1. A method for determining a working path of a casting and rolling interface, characterized in that: The method for determining the working path of the casting and rolling interface comprises: Determine the remaining time for the roughing mill to finish rolling the current batch of steel billets according to the roughing mill production plan; According to the performance characteristics of the next batch of steel billets to be rolled by the roughing mill, all production paths corresponding to the next batch of steel billets are determined; the production path corresponding to the next batch of steel billets is composed of multiple devices on the casting and rolling interface; the starting point of the production path is the continuous casting machine, the holding pit or the slab warehouse, and the end point is the roughing mill; For any production path corresponding to the next batch of steel billets, the total temperature drop of the next batch of steel billets in the production path, the total operation 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 are obtained according to the surface temperature of the next batch of steel billets when the next batch of steel billets arrive at the entrance of the first target equipment in the production path, the surface temperature of the next batch of steel billets when the next batch of steel billets arrive at the exit of the second target equipment in the production path, the operation time of each device other than the starting point and the end point of the next batch of steel billets in the production path, and the energy consumption of each device other than the starting point and the end point of the next batch of steel billets in the production path; the first target equipment is connected to the exit of the starting point, and the second target equipment is connected to the entrance 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 for the next batch of steel billets; the candidate path set includes all 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 roughing mill to complete 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.

2. The method for determining the working path of the casting and rolling interface according to claim 1, characterized in that: When the second target device is a common transport roller, the surface temperature of the next batch of steel billets when the next batch of steel billets arrives at the outlet of the second target device in the production path is calculated according to the following formula: Where c represents the specific heat capacity of the next batch of steel billets, m represents the mass of the next batch of steel billets, η1 represents the conversion coefficient between the surface temperature of the next batch of steel billets on the ordinary transport roller and the average surface temperature of the next batch of steel billets, T s represents the surface temperature of the next batch of steel billets when the next batch of steel billets arrives at the outlet of the second target device in the production path when the second target device is a common transport roller, T 01 represents the surface temperature of the next batch of steel billets when the next batch of steel billets enters the entrance of the ordinary transport roller when the second target device is the ordinary transport roller, h1 represents the convection heat transfer coefficient of the next batch of steel billets on the ordinary transport roller, A1 represents the area of ​​the next batch of steel billets on the ordinary transport roller where heat convection and heat radiation occur, T f1 represents the air temperature at the location of the second target device when the second target device is a common transport roller, ε represents the surface emissivity of the next batch of steel billets, C0 represents the blackbody radiation coefficient, t a It indicates the operation time of the second target equipment of the next batch of steel billets in the production path when the second target equipment is a common transport roller.

3. The method for determining the working path of the casting and rolling interface according to claim 1, characterized in that: When the second target device is a heat preservation roller, the surface temperature of the next batch of steel billets when the next batch of steel billets arrives at the outlet of the second target device in the production path is calculated according to the following formula: Where c represents the specific heat capacity of the next batch of steel billets, m represents the mass of the next batch of steel billets, η2 represents the conversion coefficient between the surface temperature of the next batch of steel billets on the insulation roller and the average surface temperature of the next batch of steel billets, T m represents the surface temperature of the next batch of steel billets when the next batch of steel billets arrives at the outlet of the second target device in the production path when the second target device is a heat preservation roller, T 02 It indicates the surface temperature of the next batch of steel billets when the next batch of steel billets enters the entrance of the insulation roller when the second target device is the insulation roller. h2 indicates the convection heat transfer coefficient of the next batch of steel billets on the insulation roller. D represents the diameter of the next batch of steel billets, A2 represents the area of ​​the next batch of steel billets on the insulation roller where heat convection and heat radiation occur, T f2 represents the air temperature at the location of the second target device when the second target device is a heat preservation roller, ε represents the surface emissivity of the next batch of steel billets, C0 represents the black body radiation coefficient, t b It indicates the operation time of the second target equipment of the next batch of steel billets in the production path when the second target equipment is a heat preservation roller.

4. The method for determining the working path of the casting and rolling interface according to claim 1, characterized in that: When the second target device is a heating roller, the surface temperature of the next batch of steel billets when the next batch of steel billets arrives at the outlet of the second target device in the production path is calculated according to the following formula: Where c represents the specific heat capacity of the next batch of steel billets, m represents the mass of the next batch of steel billets, η3 represents the conversion coefficient between the surface temperature of the next batch of steel billets on the heating roller and the average surface temperature of the next batch of steel billets, T n It represents the surface temperature of the next batch of steel billets when the next batch of steel billets arrives at the outlet of the second target device in the production path when the second target device is a heating roller, T 03 represents the surface temperature of the next batch of steel billets when the next batch of steel billets enters the entrance of the supplementary heating roller when the second target device is the supplementary heating roller, h3 represents the convection heat transfer coefficient of the next batch of steel billets on the supplementary heating roller, A3 represents the area of ​​the next batch of steel billets on the supplementary heating roller where heat convection and heat radiation occur, T f3 represents the air temperature at the location of the second target device when the second target device is a heating roller, ε represents the surface emissivity of the next batch of steel billets, C0 represents the black body radiation coefficient, λ represents the surface thermal conductivity of the next batch of steel billets, A4 represents the area of ​​the heat conduction part of the next batch of steel billets, T' g represents the roller temperature of the heating roller, δ represents the thickness of the next batch of steel billets, t c It indicates the operation time of the second target equipment of the next batch of steel billets in the production path when the second target equipment is a heating roller.

5. The method for determining the working path of the casting and rolling interface according to claim 1, characterized in that: According to the surface temperature of the next batch of steel billets when the next batch of steel billets arrives at the entrance of the first target equipment in the production path, the surface temperature of the next batch of steel billets when the next batch of steel billets arrives at the exit of the second target equipment in the production path, the operation time of each device except the starting point and the end point of the next batch of steel billets in the production path, and the energy consumption of each device except the starting point and the end point of the next batch of steel billets in the production path, the total temperature drop of the next batch of steel billets in the production path, the total operation 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 are obtained, specifically including: Calculate the difference between the surface temperature of the next batch of steel billets when the next batch of steel billets arrives at the outlet of the second target device in the production path and the surface temperature of the next batch of steel billets when the next batch of steel billets arrives at the inlet of the first target device in the production path, and obtain the total temperature drop of the next batch of steel billets in the production path; Calculate the sum of the operating time of each device in the production path except the starting point and the end point of the next batch of steel billets to obtain the total operating time of the next batch of steel billets in the production path; The sum of the energy consumption of each device except the starting point and the end point in the production path for the next batch of steel billets is calculated to obtain the total energy consumption of the next batch of steel billets in the production path.

6. A device for determining a working path of a casting and rolling interface, characterized in that: The device for determining the working path of the casting and rolling interface comprises: The remaining time determination module is used to determine the remaining time for the roughing mill to complete rolling the current batch of steel billets according to the roughing mill production plan; The path determination module is used 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 roughing mill. The production path corresponding to the next batch of steel billets is composed of multiple devices on the casting and rolling interface; the starting point of the production path is the continuous casting machine, the holding pit or the slab warehouse, and the end point is the roughing mill; A total temperature drop, total operation time and total energy consumption calculation module is used to obtain, for any production path corresponding to the next batch of steel billets, the total temperature drop of the next batch of steel billets in the production path, the total operation 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 surface temperature of the next batch of steel billets when the next batch of steel billets arrives at the entrance of the first target device in the production path, the surface temperature of the next batch of steel billets when the next batch of steel billets arrives at the exit of the second target device in the production path, the operation time of each device of the next batch of steel billets in the production path except the starting point and the end point, and the energy consumption of each device of the next batch of steel billets in the production path except the starting point and the end point; 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; The final working path determination module is used to determine the production path with the lowest total energy consumption in the candidate path set as the final working path for the next batch of steel billets; the candidate path set includes all 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 roughing mill to complete 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 a preset maximum temperature drop.

7. The device for determining the working path of the casting and rolling interface according to claim 6, characterized in that: The casting and rolling interface comprises: Continuous casting machine, roughing mill, holding pit, slab storage, holding roller table, supplementary heating roller table, heating furnace and 7 conveyor roller tables; The outlet of the continuous casting machine is connected to the inlet of the seventh conveying roller, the inlet of the heating furnace, the inlet of the supplementary heating roller and the inlet of the insulation roller through the first conveying roller; The outlet of the insulation pit is connected to the entrance of the heating furnace, the entrance of the supplementary heating roller, the entrance of the insulation roller and the entrance of the seventh conveying roller through the second conveying roller. The outlet of the slab storage is connected to the entrance of the insulation roller, the entrance of the seventh conveyor roller, the entrance of the heating furnace and the entrance of the supplementary heating roller through the third conveyor roller. The outlet of the heat preservation roller is connected to the inlet of the roughing mill through the fourth conveying roller; The outlet of the supplementary heating roller table is connected to the inlet of the roughing mill through the fifth conveying roller table; The outlet of the heating furnace is connected to the inlet of the roughing mill through the sixth conveyor roller; The outlet of the seventh conveyor roller table is connected to the inlet of the roughing mill.

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

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

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

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