A control method and device for the tapping rhythm of a heating furnace

Abstract

The present invention relates to the field of heating furnace control technology, and in particular to a method and device for controlling the steel-tapping rhythm of a heating furnace. The method is applied to a control system of multiple heating furnaces, where the multiple heating furnaces are arranged in sequence along the direction of rollers. After being tapped from the heating furnaces, the slabs arrive on the rollers and arrive at a rough rolling entrance along the rollers. The method comprises: obtaining a first time from when the first slab is tapped to when it arrives at a heat inspection point along the rollers, where the heat inspection is the junction of the heating furnace and the rough rolling, and the first slab is the slab in the target heating furnace; controlling the steel-tapping time of the second slab so that the second time from when the second slab is tapped to when it arrives at the heat inspection point along the rollers meets a preset condition, where the second slab is the slab in a heating furnace adjacent to the target heating furnace, and the preset condition is that the difference between the second time and the first time is a set value, and then controlling the steel-tapping time of the slabs in each heating furnace to control the steel-tapping rhythm, ensure that no waste of rolling gap time is caused between adjacent slabs, and improve rolling efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of heating furnace control, and in particular to a method and device for controlling the steel tapping rhythm of a heating furnace. Background Art

[0002] In the metallurgical industry, uniform control of the steel-tapping rhythm of the heating furnace can ensure the consistency of the time when the slabs discharged from the heating furnace arrive at the rough rolling entrance each time, which has great practical significance for the uniformity of the rolling rhythm, the improvement of the rolling rhythm, and the increase of output.

[0003] The original reheating furnace tapping process was completely controlled by the roughing mill to automatically demand steel. The steel demanding time rhythm was mainly composed of two parts: the steel tapping time of the steel tapping machine and the time when the slab ran on the roller table to the heat inspection at the junction of the roughing mill and the reheating furnace. However, there were the following problems:

[0004] The tapping time of each slab is inconsistent, and the transportation time of each slab on the roller is also inconsistent, which affects the low accuracy of the tapping rhythm control of each heating furnace, makes it impossible to accurately control the rhythm, and also causes waste of rolling interval time, which in turn makes the rolling efficiency low. Summary of the Invention

[0005] In view of the above problems, the present invention is proposed to provide a method and device for controlling the steel tapping rhythm of a heating furnace, which overcomes the above problems or at least partially solves the above problems.

[0006] In a first aspect, the present invention further provides a method for controlling the tapping rhythm of a heating furnace, which is applied to a control system of multiple heating furnaces, wherein the multiple heating furnaces are arranged sequentially along the roller table direction, the first end heating furnace is closest to the rough rolling entrance, the slab arrives on the roller table after being tapped from the heating furnace, and arrives at the rough rolling entrance along the roller table, a detection grating is set at the outlet of each heating furnace, and a distance is maintained between the slab and the furnace wall of the heating furnace, comprising:

[0007] Obtaining the first time from the time the first slab is tapped to the time it arrives at a heat check location along the roller conveyor, where the heat check location is the junction between the heating furnace and the rough rolling mill, and the first slab is the slab in the target heating furnace;

[0008] The steel-out time of the second slab is controlled so that the second time from the steel-out to the arrival of the second slab at the heat inspection point along the roller conveyor meets a preset condition, and the second slab is a slab in a heating furnace adjacent to the target heating furnace, and the preset condition is that the difference between the second time and the first time is a set value.

[0009] Furthermore, obtaining the first time from the first slab being tapped out to the first slab arriving at the heat inspection location along the roller conveyor includes:

[0010] Obtaining a third time from when the first slab is tapped to when it reaches the roller table;

[0011] Obtaining a fourth time when the first slab passes through the furnace wall along the roller and arrives at the heat inspection location;

[0012] The first time is obtained based on the third time and the fourth time.

[0013] Furthermore, obtaining the third time from when the first slab is tapped to when it reaches the roller table includes:

[0014] When a first slab is detected by the detection grating, controlling a steel tapping machine to drag the first slab from the detection grating position to the roller table, the steel tapping machine being located at a steel tapping position of a heating furnace;

[0015] Obtaining a fifth time for the tapping machine to drag the first slab, a sixth time for the tapping machine to rise and fall, and a seventh time for the heating furnace door to reach a half-open position;

[0016] Based on the fifth time, the sixth time, and the seventh time, a third time from when the first slab is tapped to when it reaches the roller table is obtained.

[0017] Furthermore, obtaining a fifth time for the tapping machine to drag the first slab includes:

[0018] Obtain a first preset distance between the forward deceleration point of the tapping machine and the front end of the steel tapping machine, a second preset distance between the rear leg deceleration point of the tapping machine and the center line of the roller, a third preset distance at which the first slab exceeds the detection grating when tapping, a fourth preset distance between the tapping machine head and the detection grating, a fifth preset distance between the detection grating and the center line of the roller, and a first speed of forward acceleration, a second speed of forward deceleration, a third speed of backward acceleration, and a fourth speed of backward deceleration of the tapping machine;

[0019] Based on the first preset distance, the second preset distance, the third preset distance, the fourth preset distance, the fifth preset distance, and the first speed, the second speed, the third speed, and the fourth speed, the fifth time for the steel-making machine to drag the first slab is obtained.

[0020] Furthermore, obtaining a fifth time for the first slab to reach the roller table from the time of steel tapping based on the first preset distance, the second preset distance, the third preset distance, the fourth preset distance, the fifth preset distance, and the first speed, the second speed, the third speed, and the fourth speed includes:

[0021] The fifth time from the time the first slab reaches the roller table after the steel is tapped is obtained according to the following formula:

[0022] t3=(L4-L3+w×2 / 3-0.5) / v31+0.5 / v32+L5-L3+w / 2-0.5) / v41+0.5 / v42

[0023] Among them, L3 is the third preset distance, L4 is the fourth preset distance, L5 is the fifth preset distance, the first preset distance and the second preset distance are both 0.5, v31 is the first speed, v32 is the second speed, v41 is the third speed, v42 is the fourth speed, 2 / 3 is the steel-making machine extending to 2 / 3 of the first slab, and t3 is the fifth time.

[0024] Furthermore, obtaining a fourth time when the first slab passes through the furnace wall along the roller and arrives at the heat inspection location includes:

[0025] Obtaining the acceleration and conveying speed of the roller conveyor;

[0026] Based on the acceleration and conveying speed of the roller, an acceleration duration and an acceleration distance of the first slab acceleration process are obtained;

[0027] Obtain the sixth preset distance between the first slab and the heat inspection point when it arrives on the roller, and based on the acceleration duration, the acceleration distance, the transportation speed, and the sixth preset distance, obtain the fourth time for the first slab to arrive at the heat inspection point along the roller through the furnace wall.

[0028] Furthermore, obtaining a fourth time for the first slab to arrive at the heat inspection location along the roller conveyor and through the furnace wall based on the acceleration duration, the acceleration distance, the transport speed, and the sixth preset distance includes:

[0029] The fourth time for the first slab to arrive at the heat inspection position along the roller conveyor through the furnace wall is obtained according to the following formula:

[0030] T1=t+(L1+L2-l) / v

[0031] l=a×t×t / 2

[0032] Wherein, a is acceleration, t is the acceleration duration, l is the acceleration distance, v is the transport speed, L1+L2 is the sixth preset distance, and T1 is the fourth time.

[0033] In a second aspect, the present invention further provides a control device for the tapping rhythm of a heating furnace, which is applied to a control system of multiple heating furnaces, wherein the multiple heating furnaces are arranged sequentially along the roller direction, with the first heating furnace being closest to the rough rolling entrance. After the slab is tapped from the heating furnace, it arrives on the roller and follows the roller to the rough rolling entrance. A detection grating is provided at the exit of each heating furnace to maintain a distance between the slab and the furnace wall of the heating furnace, comprising:

[0034] An acquisition module is used to acquire the first time from the time when the first slab is tapped to the time when it arrives at a heat inspection location along the roller conveyor, wherein the heat inspection location is the junction between the heating furnace and the rough rolling mill, and the first slab is a slab in any heating furnace;

[0035] A control module is used to control the steel-out time of the second slab so that the second time from the steel-out to the arrival of the second slab at the heat inspection point along the roller conveyor meets a preset condition, wherein the second slab is a slab in a heating furnace adjacent to any of the heating furnaces, and the preset condition is that the difference between the second time and the first time is a set value.

[0036] In a third aspect, the present invention further 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 implements the above-mentioned method steps when executing the program.

[0037] In a fourth aspect, the present invention further provides a computer-readable storage medium having a computer program stored thereon, which implements the above method steps when executed by a processor.

[0038] One or more technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:

[0039] The present invention provides a method for controlling the steel-tapping rhythm of a heating furnace, which is applied to a control system of multiple heating furnaces, wherein the multiple heating furnaces are arranged in sequence along the direction of rollers, the head end heating furnace is closest to the rough rolling entrance, the slab arrives on the roller after being tapped from the heating furnace, and arrives at the rough rolling entrance along the rollers, a detection grating is set at the exit of each heating furnace, and a distance is maintained between the slab and the furnace wall of the heating furnace, the method comprising: obtaining a first time from steel tapping to arrival at a heat detection point along the rollers, the heat detection being the junction of the heating furnace and the rough rolling, the first slab being the slab in the target heating furnace; controlling the steel-tapping time of a second slab so that a second time from steel tapping to arrival at the heat detection point along the rollers meets a preset condition, the second slab being the slab in the heating furnace adjacent to the target heating furnace, the preset condition being that the difference between the second time and the first time is a set value, and then by controlling the steel-tapping time of the slabs in each heating furnace, the steel-tapping rhythm is controlled, ensuring that no waste of rolling gap time is caused between adjacent slabs, thereby improving rolling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. Throughout the drawings, the same reference figures denote the same components. In the drawings:

[0041] Figure 1 It shows a structural schematic diagram of the steel tapping and heat inspection position of a heating furnace in an embodiment of the present invention;

[0042] Figure 2 A schematic flow chart showing the steps of a method for controlling the tapping rhythm of a heating furnace according to an embodiment of the present invention is shown;

[0043] Figure 3 A schematic structural diagram of a device for controlling the tapping rhythm of a heating furnace according to an embodiment of the present invention is shown;

[0044] Figure 4 A structural schematic diagram of a computer device for implementing a method for controlling the steel tapping rhythm of a heating furnace in an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0045] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0046] Example 1

[0047] The embodiment of the present invention provides a method for controlling the tapping rhythm of a heating furnace, which is applied to a control system of multiple heating furnaces, such as Figure 1 As shown, multiple heating furnaces are arranged sequentially along the roller table. The leading heating furnace is closest to the roughing mill entrance. Slabs are tapped from the heating furnaces onto the roller table and then follow the roller table to the roughing mill entrance. Detection gratings are installed at the exit of each heating furnace to maintain a distance between the slabs and the furnace walls. The tapping machine, located at the tapping point of the heating furnace, is used to pull the slabs from the furnace mouth to the roller table.

[0048] like Figure 2 As shown, the method includes:

[0049] S201, obtaining the first time from the time the first slab is tapped to the time it arrives at the heat inspection location along the roller conveyor, where the heat inspection location is the junction between the heating furnace and the rough rolling mill, and the first slab is the slab in the target heating furnace;

[0050] S202, controlling the steel-out time of the second slab so that the second time from steel-out to the second time of the second slab arriving at the heat inspection point along the roller conveyor meets the preset conditions. The second slab is a slab in a heating furnace adjacent to the target heating furnace. The preset condition is that the difference between the second time and the first time is a set value.

[0051] First, the slab tapping starts from the time when the detection grating detects the slab. Figure 1 The slab is shown just at the tapping position.

[0052] Next, in S201, the first time acquisition process is as follows:

[0053] Obtaining a third time from when the first slab is tapped to when it reaches the roller table;

[0054] Obtain the fourth time when the first slab arrives at the heat inspection position along the roller conveyor and the furnace wall;

[0055] Based on the third time and the fourth time, the first time is obtained.

[0056] Specifically, after obtaining the third time and the fourth time, the third time and the fourth time are added together to obtain the first time.

[0057] The following is a detailed description of the process of obtaining the third time:

[0058] When the first slab is detected by the detection grating, the tapping machine is controlled to start and drag the first slab from the detection grating position to the roller table, and the tapping machine is located at the tapping position of the heating furnace;

[0059] Next, a fifth time for the tapping machine to drag the first slab, a sixth time for the tapping machine to rise and fall, and a seventh time for the heating furnace door to reach a half-open position are obtained;

[0060] Based on the fifth time, the sixth time, and the seventh time, a third time from when the first slab is tapped to when it reaches the roller table is obtained.

[0061] First, the process of the tapping machine dragging the first slab includes accelerating forward, decelerating forward, accelerating backward, and decelerating backward. Therefore, when the first slab is dragged to the roller table, the following distance information needs to be obtained, including:

[0062] Obtain the first preset distance between the forward deceleration point of the steel-discharging machine and the front end of the steel-discharging machine, which is a fixed value of 0.5, and the second preset distance between the backward deceleration point of the steel-discharging machine and the center line of the roller, which is also a fixed value of 0.5, wherein the forward deceleration point and the backward deceleration point are both located between the detection grating and the center line of the roller.

[0063] It is also necessary to obtain the third preset distance L3 that the first slab exceeds the detection grating when being tapped, the fourth preset distance L4 between the tapping machine head and the detection grating, the fifth preset distance L5 between the detection grating and the center line of the roller, the first speed v31 of the tapping machine for forward acceleration, the second speed v32 of the tapping machine for forward deceleration, the third speed v41 of the tapping machine for backward acceleration, and the fourth speed v42 of the tapping machine for backward deceleration.

[0064] After obtaining this information, the fifth time for the steel-making machine to drag the first slab is obtained according to the first preset distance, the second preset distance, the third preset distance, the fourth preset distance, the fifth preset distance, and the first speed, the second speed, the third speed and the fourth speed.

[0065] The fifth time is obtained according to the following formula:

[0066] t3=(L4-L3+w×2 / 3-0.5) / v31+0.5 / v32+L5-L3+w / 2-0.5) / v41+0.5 / v42

[0067] Among them, L3 is the third preset distance, L4 is the fourth preset distance, L5 is the fifth preset distance, the first preset distance and the second preset distance are both 0.5, v31 is the first speed, v32 is the second speed, v41 is the third speed, v42 is the fourth speed, 2 / 3 is the steel-making machine extending to 2 / 3 of the first slab, and t3 is the fifth time.

[0068] Of course, when the slabs in each heating furnace are pulled out by the steel tapping machine, the above method can be used to obtain the fifth time of the slabs being pulled out by the steel tapping machine.

[0069] In addition, when the tapping machine drags the slab, it not only consumes the dragging time, but also the time for the tapping machine to rise and fall, that is, the sixth time. Before the tapping machine drags the slab, it needs to be controlled to descend so that the tapping machine extends under the slab. After that, it needs to be controlled to rise to achieve dragging. Of course, after reaching the top of the roller table, it also needs to be controlled to fall. The time for the tapping machine to rise and fall in this process is fixed and can be obtained based on experience. The time for the tapping machine to rise and fall is set as t5.

[0070] When the slab reaches the outlet of the heating furnace, it is also necessary to wait for the time when the furnace door of the heating furnace is half-opened, that is, the seventh time, which is also a fixed value t6.

[0071] Then, based on the fifth time, the sixth time, and the seventh time, the third time when the first slab reaches the roller table from the time of steel tapping is obtained.

[0072] Specifically, the third time T3 = t3 + t5 + t6.

[0073] The following describes the process of obtaining the fourth time:

[0074] Get the acceleration and conveying speed of the roller;

[0075] Based on the acceleration and the transport speed, the acceleration time and acceleration distance of the first slab acceleration process are obtained;

[0076] Obtain the sixth preset distance between the first slab and the heat inspection point when it arrives on the roller, and based on the acceleration time, acceleration distance, transportation speed and the sixth preset distance, obtain the fourth time when the first slab travels along the roller through the furnace wall to reach the heat inspection point.

[0077] Specifically, the formula for obtaining the fourth time is as follows:

[0078] T1=t+(L1+L2-l) / v

[0079] l=a×t×t / 2

[0080] Wherein, a is acceleration, t is acceleration duration, l is acceleration distance, v is transport speed, L1+L2 is the sixth preset distance, and T1 is the fourth time.

[0081] L1 refers to the distance between the first slab and the furnace wall of the heating furnace, and L2 refers to the distance between the furnace wall and the heat inspection point.

[0082] The time used by the first slab during the acceleration process is t=v / a, and the acceleration distance of the first slab during the acceleration process is l=a×t×t / 2.

[0083] Thus, the fourth time of the first slab arriving at the heat inspection point along the roller conveyor through the furnace wall is obtained, which is the acceleration time plus the uniform speed time, that is, T1 = t + (L1 + L2 - l) / v

[0084] After obtaining the fourth time when the first slab follows the roller conveyor through the furnace wall to reach the heat inspection location, execute S102 to control the steel tapping time of the second slab so that the second time from steel tapping to reaching the heat inspection location along the roller conveyor meets the preset condition. The second slab is a slab in a heating furnace adjacent to the target heating furnace, and the preset condition is that the difference between the second time and the first time is a set value.

[0085] That is, by controlling the steel-out time of the second slab adjacent to the first slab, there can be no idle time between the first slab and the second slab when they respectively arrive at the heat inspection position, and the rolling efficiency will not be affected.

[0086] Of course, the steel-out time of the third slab, the fourth slab, and the Nth slab can also be controlled to ensure that the time difference between adjacent slabs from the start of steel-out to the heat inspection meets the set value, which can be 0.9 seconds, etc., and is not specifically limited here.

[0087] By evenly controlling the timing of slab tapping, the tapping rhythm can be reasonably controlled and the rolling interval time can be reduced.

[0088] One or more technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:

[0089] The present invention provides a method for controlling the steel-tapping rhythm of a heating furnace, which is applied to a control system of multiple heating furnaces, wherein the multiple heating furnaces are arranged in sequence along the direction of rollers, the head end heating furnace is closest to the rough rolling entrance, the slab arrives on the roller after being tapped from the heating furnace, and arrives at the rough rolling entrance along the roller, a detection grating is set at the exit of each heating furnace, and a distance is maintained between the slab and the furnace wall of the heating furnace, the method comprising: obtaining a first time from steel tapping to arrival of a heat detection point along the roller, the heat detection being the junction of the heating furnace and the rough rolling, the first slab being the slab in the target heating furnace; controlling the steel-tapping time of a second slab so that a second time from steel tapping to arrival of the heat detection point along the roller meets a preset condition, the second slab being the slab in the heating furnace adjacent to the target heating furnace, the preset condition being that the difference between the second time and the first time is a set value, and then by controlling the steel-tapping time of the slab in each heating furnace, the steel-tapping rhythm is controlled, ensuring that no waste of rolling gap time is caused between adjacent slabs, thereby improving rolling efficiency.

[0090] Example 2

[0091] Based on the same inventive concept, an embodiment of the present invention further provides a control device for the tapping rhythm of a heating furnace, which is applied to a control system of multiple heating furnaces. The multiple heating furnaces are arranged in sequence along the roller direction, and the head end heating furnace is closest to the rough rolling entrance. After the slab is tapped from the heating furnace, it arrives on the roller and arrives at the rough rolling entrance along the roller. A detection grating is set at the outlet of each heating furnace to maintain a distance between the slab and the furnace wall of the heating furnace, such as Figure 3 As shown, the device includes:

[0092] An acquisition module 301 is configured to acquire a first time from when a first slab is tapped to when it arrives at a heat check point along the roller conveyor, wherein the heat check point is a junction between a heating furnace and a rough rolling mill, and the first slab is a slab in a target heating furnace;

[0093] The control module 302 is used to control the steel-out time of the second slab so that the second time from the steel-out to the arrival of the second slab at the heat inspection point along the roller conveyor meets a preset condition. The second slab is a slab in a heating furnace adjacent to the target heating furnace, and the preset condition is that the difference between the second time and the first time is a set value.

[0094] In an optional implementation, the acquisition module 301 includes:

[0095] A first acquiring unit is used to acquire a third time from when the first slab is tapped to when it reaches the roller table;

[0096] a second acquiring unit, configured to acquire a fourth time when the first slab passes through the furnace wall along the roller and arrives at the heat inspection location;

[0097] An obtaining unit is configured to obtain the first time based on the third time and the fourth time.

[0098] In an optional implementation, the first acquiring unit is configured to:

[0099] for controlling a steel tapping machine to drag the first slab from the detection grating position to the roller table when the first slab is detected by the detection grating, wherein the steel tapping machine is located at the steel tapping position of the heating furnace;

[0100] Used to obtain a fifth time for the tapping machine to drag the first slab, a sixth time for the tapping machine to rise and fall, and a seventh time for the heating furnace door to reach a half-open position;

[0101] Used to obtain a third time from when the first slab is tapped to when it reaches the roller table based on the fifth time, the sixth time and the seventh time.

[0102] In an optional implementation, the first acquiring unit includes:

[0103] a first acquisition subunit, configured to acquire a first preset distance between a forward deceleration point of the tapping machine and a front end of the tapping machine, a second preset distance between a rear leg deceleration point of the tapping machine and a center line of the roller, a third preset distance at which the first slab exceeds the detection grating when tapping, a fourth preset distance between the tapping machine head and the detection grating, a fifth preset distance between the detection grating and the center line of the roller, and a first speed of forward acceleration, a second speed of forward deceleration, a third speed of backward acceleration, and a fourth speed of backward deceleration of the tapping machine;

[0104] A subunit is obtained, which is used to obtain the fifth time for the steel-making machine to drag the first slab based on the first preset distance, the second preset distance, the third preset distance, the fourth preset distance, the fifth preset distance, and the first speed, the second speed, the third speed, and the fourth speed.

[0105] In an optional embodiment, a subunit is obtained for:

[0106] The fifth time from the time the first slab reaches the roller table after the steel is tapped is obtained according to the following formula:

[0107] t3=(L4-L3+w×2 / 3-0.5) / v31+0.5 / v32+L5-L3+w / 2-0.5) / v41+0.5 / v42

[0108] Among them, L3 is the third preset distance, L4 is the fourth preset distance, L5 is the fifth preset distance, the first preset distance and the second preset distance are both 0.5, v31 is the first speed, v32 is the second speed, v41 is the third speed, v42 is the fourth speed, 2 / 3 is the steel-making machine extending to 2 / 3 of the first slab, and t3 is the fifth time.

[0109] In an optional implementation, the second acquiring unit includes:

[0110] Obtaining the acceleration and conveying speed of the roller conveyor;

[0111] Based on the acceleration and conveying speed of the roller, an acceleration duration and an acceleration distance of the first slab acceleration process are obtained;

[0112] Obtain the sixth preset distance between the first slab and the heat inspection point when it arrives on the roller, and based on the acceleration duration, the acceleration distance, the transportation speed, and the sixth preset distance, obtain the fourth time for the first slab to arrive at the heat inspection point along the roller through the furnace wall.

[0113] In an optional implementation manner, the second acquiring unit is configured to:

[0114] The fourth time for the first slab to arrive at the heat inspection position along the roller conveyor through the furnace wall is obtained according to the following formula:

[0115] T1=t+(L1+L2-l) / v

[0116] l=a×t×t / 2

[0117] Wherein, a is acceleration, t is the acceleration duration, l is the acceleration distance, v is the transport speed, L1+L2 is the sixth preset distance, and T1 is the fourth time.

[0118] Example 3

[0119] Based on the same inventive concept, an embodiment of the present invention provides a computer device, such as Figure 4 As shown, it includes a memory 404, a processor 402 and a computer program stored in the memory 404 and capable of running on the processor 402. When the processor 402 executes the program, the steps of the control method of the steel-making rhythm of the heating furnace are implemented.

[0120] Among them, Figure 4 In the embodiment of the present invention, a bus architecture (represented by bus 400) is shown. Bus 400 may include any number of interconnected buses and bridges, and bus 400 links together various circuits including one or more processors represented by processor 402 and memory represented by memory 404. Bus 400 may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. Bus interface 406 provides an interface between bus 400 and receiver 401 and transmitter 403. Receiver 401 and transmitter 403 may be the same component, namely a transceiver, which provides a unit for communicating with various other devices over a transmission medium. Processor 402 is responsible for managing bus 400 and general processing, while memory 404 may be used to store data used by processor 402 when performing operations.

[0121] Example 4

[0122] Based on the same inventive concept, an embodiment of the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the above-mentioned method for controlling the steel-tapping rhythm of a heating furnace.

[0123] The algorithm and display provided herein are not inherently related to any particular computer, virtual system or other device. Various general-purpose systems can also be used together with the teachings based on this. According to the above description, it is obvious that the structure required for constructing this type of system. In addition, the present invention is not directed to any specific programming language. It should be understood that various programming languages can be utilized to realize the content of the present invention described herein, and the above description of specific languages is for the purpose of disclosing the best mode of the present invention.

[0124] In the description provided herein, numerous specific details are described. However, it is understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques are not shown in detail so as not to obscure the understanding of this description.

[0125] Similarly, it should be understood that in order to streamline the present disclosure and aid in understanding one or more of the various inventive aspects, in the above description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together into a single embodiment, figure, or description thereof. However, this disclosed method should not be interpreted as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim. Rather, as reflected in the claims below, inventive aspects lie in less than all the features of the individual embodiments disclosed above. Accordingly, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of the invention.

[0126] Those skilled in the art will appreciate that the modules in the devices in the embodiments may be adaptively changed and arranged in one or more devices different from the embodiments. The modules or units or components in the embodiments may be combined into one module or unit or component, and in addition may be divided into multiple submodules or subunits or subcomponents. All features disclosed in this specification (including the accompanying claims, abstracts and drawings) and all processes or units of any method or device disclosed herein may be combined in any combination, except that at least some of such features and / or processes or units are mutually exclusive. Unless expressly stated otherwise, each feature disclosed in this specification (including the accompanying claims, abstracts and drawings) may be replaced by an alternative feature providing the same, equivalent or similar purpose.

[0127] Furthermore, those skilled in the art will appreciate that although some embodiments herein include certain features included in other embodiments but not other features, combinations of features from different embodiments are intended to be within the scope of the present invention and to form different embodiments. For example, in the claims below, any of the claimed embodiments may be used in any combination.

[0128] The various component embodiments of the present invention can be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art will appreciate that a microprocessor or digital signal processor (DSP) can be used in practice to implement some or all of the functions of some or all of the components of a control device for the steel-tapping rhythm of a heating furnace or a computer device according to an embodiment of the present invention. The present invention can also be implemented as a device or device program (e.g., a computer program and a computer program product) for executing part or all of the methods described herein. Such a program for implementing the present invention can be stored on a computer-readable medium, or can be in the form of one or more signals. Such a signal can be downloaded from an Internet website, or provided on a carrier signal, or provided in any other form.

[0129] It should be noted that the above embodiments illustrate rather than limit the invention, and that those skilled in the art may devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between brackets should not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present invention may be implemented by means of hardware comprising several different elements and by means of appropriately programmed computers. In a unit claim enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third etc. does not indicate any order. These words may be interpreted as names.

Claims

1. A method for controlling the tapping rhythm of a heating furnace, applied to a control system of multiple heating furnaces, wherein the multiple heating furnaces are arranged sequentially along the roller table direction, with the first heating furnace closest to the rough rolling entrance. After the slab is tapped from the heating furnace, it arrives on the roller table and follows the roller table to the rough rolling entrance. A detection grating is provided at the outlet of each heating furnace to maintain a distance between the slab and the furnace wall of the heating furnace. The method is characterized in that: include: Obtaining the first time from the time the first slab is tapped to the time it arrives at a heat inspection location along the roller conveyor, wherein the heat inspection location is a junction between a heating furnace and a rough rolling mill, and the first slab is a slab in a target heating furnace; controlling the tapping time of a second slab so that a second time from the tapping of the second slab to the arrival of the second slab at the heat inspection location along the roller conveyor satisfies a preset condition, wherein the second slab is a slab in a heating furnace adjacent to the target heating furnace, and the preset condition is that the difference between the second time and the first time is a set value; The obtaining of the first time from the first slab being tapped out to the first slab arriving at the heat inspection location along the roller conveyor comprises: Obtaining a third time from when the first slab is tapped to when it reaches the roller table; Obtaining a fourth time when the first slab passes through the furnace wall along the roller and arrives at the heat inspection location; Obtaining the first time based on the third time and the fourth time; The obtaining of the third time from when the first slab is tapped to when it reaches the roller table comprises: When a first slab is detected by the detection grating, controlling a steel tapping machine to drag the first slab from the detection grating position to the roller table, the steel tapping machine being located at a steel tapping position of a heating furnace; Obtaining a fifth time for the tapping machine to drag the first slab, a sixth time for the tapping machine to rise and fall, and a seventh time for the heating furnace door to reach a half-open position; Based on the fifth time, the sixth time, and the seventh time, a third time from when the first slab is tapped to when it reaches the roller table is obtained; The obtaining of a fifth time during which the steel tapping machine drags the first slab comprises: Obtaining a first preset distance between a forward deceleration point of the tapping machine and a front end of steel tapping, a second preset distance between a backward deceleration point of the tapping machine and a center line of the roller, a third preset distance at which the first slab exceeds the detection grating when tapping, a fourth preset distance between the tapping machine head and the detection grating, a fifth preset distance between the detection grating and the center line of the roller, and a first speed of forward acceleration, a second speed of forward deceleration, a third speed of backward acceleration, and a fourth speed of backward deceleration of the tapping machine; Based on the first preset distance, the second preset distance, the third preset distance, the fourth preset distance, the fifth preset distance, and the first speed, the second speed, the third speed, and the fourth speed, a fifth time for the tapping machine to drag the first slab is obtained; The step of obtaining a fifth time for the first slab to reach the roller table from the time of steel tapping based on the first preset distance, the second preset distance, the third preset distance, the fourth preset distance, the fifth preset distance, and the first speed, the second speed, the third speed, and the fourth speed comprises: The fifth time from the time the first slab reaches the roller table after the steel is tapped is obtained according to the following formula: t3=(L4-L3+w×2 / 3-0.5) / v31+0.5 / v32+(L5-L3+w / 2-0.5) / v41+0.5 / v42 Among them, w is the width of the slab to be discharged from the heating furnace closest to the steel-discharging side, L3 is the third preset distance, L4 is the fourth preset distance, L5 is the fifth preset distance, the first preset distance and the second preset distance are both 0.5, v31 is the first speed, v32 is the second speed, v41 is the third speed, v42 is the fourth speed, 2 / 3 is the position where the steel-discharging machine extends to 2 / 3 of the first slab, and t3 is the fifth time.

2. The method according to claim 1, wherein The obtaining of the fourth time when the first slab passes through the furnace wall along the roller and arrives at the heat inspection location includes: Obtaining the acceleration and conveying speed of the roller conveyor; Based on the acceleration and conveying speed of the roller, an acceleration duration and an acceleration distance of the first slab acceleration process are obtained; Obtain the sixth preset distance between the first slab and the heat inspection point when it arrives on the roller, and based on the acceleration duration, the acceleration distance, the transportation speed, and the sixth preset distance, obtain the fourth time for the first slab to arrive at the heat inspection point along the roller through the furnace wall.

3. The method according to claim 2, wherein The fourth time for the first slab to arrive at the heat inspection location along the roller conveyor and through the furnace wall is obtained based on the acceleration duration, the acceleration distance, the transport speed, and the sixth preset distance, including: The fourth time for the first slab to arrive at the heat inspection position along the roller conveyor through the furnace wall is obtained according to the following formula: T1=t+(L1+L2-l) / v in, is the acceleration, is the acceleration duration, is the acceleration distance, v is the transport speed, L1+L2 is the sixth preset distance, and T1 is the fourth time.

4. A control device for the tapping rhythm of a heating furnace, the control device being used to implement the method steps described in any one of claims 1 to 3, and being applied to a control system of multiple heating furnaces, wherein the multiple heating furnaces are arranged sequentially along the roller direction, the head end heating furnace being closest to the rough rolling entrance, the slab arriving on the roller after being tapped from the heating furnace, and arriving at the rough rolling entrance along the roller, a detection grating being provided at the exit of each heating furnace, and a distance being maintained between the slab and the furnace wall of the heating furnace, wherein the detection grating is provided at the exit of each heating furnace, and the distance between the slab and the furnace wall of the heating furnace is maintained, include: An acquisition module is used to acquire the first time from the time when the first slab is tapped to the time when it arrives at a heat inspection location along the roller conveyor, wherein the heat inspection location is a junction between a heating furnace and a rough rolling mill, and the first slab is a slab in any heating furnace; A control module is used to control the steel-out time of the second slab so that the second time from the steel-out to the arrival of the second slab at the heat inspection point along the roller conveyor meets a preset condition, wherein the second slab is a slab in a heating furnace adjacent to any of the heating furnaces, and the preset condition is that the difference between the second time and the first time is a set value.

5. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, the method according to any one of claims 1 to 3 is implemented.

6. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the method according to any one of claims 1 to 3 is implemented.

Images