CN112872044A - Method and device for controlling rolling rhythm - Google Patents
Method and device for controlling rolling rhythm Download PDFInfo
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Abstract
The invention discloses a method and a device for controlling rolling rhythm, which relate to the technical field of metallurgy and specifically comprise the following steps: respectively acquiring time data, wherein the time data comprises the time when the current coiled steel leaves the fine descaling area and the time when the next coiled steel reaches the fine descaling area; acquiring signal data, wherein the signal data comprises a signal generated when the next coil of strip steel reaches a flying shear area and a signal generated when the current coil of strip steel leaves a finishing mill group; acquiring speed data, wherein the speed data comprises the real-time speed of the current strip steel roll and the preset speed of the next strip steel roll; and if at least one of the time data, the signal data and the speed data meets the corresponding triggering condition, triggering a rear-end collision prevention function, wherein the rear-end collision prevention function is used for changing the distance between adjacent strip steels. According to the invention, the rolling rhythm is monitored by monitoring three groups of data, and once the rhythm is changed, the rear-end collision prevention function can be started at the highest speed, so that the technical effect of preventing the rear-end collision and stacking of adjacent strip steels caused by the change of the rolling rhythm is realized.
Description
Technical Field
The invention relates to the technical field of metallurgy, in particular to a method and a device for controlling rolling rhythm.
Background
In the production process of hot-rolled plate strip steel, the rolling rhythm is a main factor for releasing the production capacity of a rolling mill, and the rolling rhythm is influenced by various factors such as the size of a plate blank, the type of the plate blank, the specification of a finished product, a control process, the tapping rhythm and the like, so that the rolling rhythm fluctuation is large in actual production, the plate blank with the high rolling rhythm has rear-end collision risk, an operator can only manually swing steel through self experience, the defects of high control difference and low accuracy exist, steel piling accidents caused by too fast rhythm occur for many times, and a production line is in a halt state for a long time due to long steel piling accident processing time, and the production capacity of the rolling mill is greatly limited.
Disclosure of Invention
The embodiment of the invention provides a method and a device for controlling rolling rhythm, solves the technical problem that in the prior art, the rolling rhythm is artificially controlled, and the rear-end collision and stacking of adjacent strip steels are easily caused by large rolling rhythm fluctuation, and achieves the technical effect of preventing the rear-end collision and stacking of adjacent strip steels caused by the change of the rolling rhythm.
In a first aspect, the present invention provides a method for controlling a rolling rhythm, including: acquiring time data, wherein the time data comprises the time when the current coiled steel leaves the fine descaling area and the time when the next coiled steel reaches the fine descaling area; acquiring signal data, wherein the signal data comprises a signal generated when the next coil of strip steel reaches a flying shear area and a signal generated when the current coil of strip steel leaves a finishing mill group; acquiring speed data, wherein the speed data comprises the real-time speed of the current strip steel roll and the preset speed of the next strip steel roll; and if at least one of the time data, the signal data and the speed data meets a corresponding triggering condition, triggering a rear-end collision prevention function, wherein the rear-end collision prevention function is used for changing the distance between adjacent strip steels.
Preferably, the acquiring time data includes: acquiring the distance between the middle point of the flying shear area and the outlet of the fine descaling area, and the speed of the current coiled steel strip when the current coiled steel strip leaves the fine descaling area; determining the time for the current coiled steel to leave the fine descaling area based on the following formula:
wherein, TFront sideThe time when the current coiled steel leaves the fine descaling area, L is the distance from the middle point of the flying shear area to the outlet of the fine descaling area, and VFront sideThe speed of the current coiled steel when the current coiled steel leaves the fine descaling area is determined;
the distance from the head of the next strip steel to the middle point of the flying shear area and the speed of the next strip steel when reaching the flying shear area are obtained, and the time of the next strip steel when reaching the fine descaling area is determined based on the following formula:
wherein, TRear endThe time when the next strip reaches the fine descaling area, L' is the distance from the head of the next strip to the middle point of the flying shear area, VRear endThe speed of the next coil of strip steel when the next coil of strip steel reaches the flying shear area.
Preferably, the time data satisfies a corresponding trigger condition, specifically: and when the time that the current coiled steel leaves the fine descaling area is longer than the time that the next coiled steel reaches the fine descaling area, the condition that the triggering condition is met.
Preferably, the signal data satisfies a corresponding trigger condition, specifically: and when the signal generated when the next coil of strip steel reaches the flying shear area is earlier than the signal generated when the current coil of strip steel leaves the finishing mill group in time, the triggering condition is met.
Preferably, the speed data satisfies a corresponding trigger condition, including: when the current coil of strip steel is cast at each finishing mill frame, acquiring the real-time speed at the outlet of the corresponding finishing mill group; when the next coil of strip steel is cast at the finishing mill group, acquiring the preset speed at the outlet of the corresponding finishing mill group; judging whether the real-time speed of the current coil of strip steel corresponding to the nth finishing mill frame and the preset speed of the next coil of strip steel meet a preset speed relation or not aiming at the nth finishing mill frame in the finishing mill group, wherein N is 1-N, and N is the number of frames of the finishing mill group; if the preset speed relation is met, the speed data meets the corresponding triggering condition
Preferably, the determining whether the real-time speed of the current strip steel roll corresponding to the nth finishing mill frame and the preset speed of the next strip steel roll satisfy a preset speed relationship includes: if the real-time speed of the current strip steel roll and the preset speed of the next strip steel roll meet the following formula:
wherein, V'nWhen the next coil of strip steel is cast at the finishing mill group, the corresponding preset speed V at the outlet of the finishing mill groupnThe real-time speed of the current coil of strip steel at the outlet of the finishing mill group is correspondingly set when the current coil of strip steel is cast at the nth finishing mill frame;
i.e. the speed data meets the corresponding trigger condition.
Preferably, the triggering of the rear-end collision prevention function includes: if the next strip steel is detected to reach the flying shear area but not reach the fine descaling area, the flying shears in the flying shear area chop the next strip steel along the width direction, the next strip steel is chopped into a front part and a rear part of the flying shears, and the front part of the flying shears in the roller way area of the flying shears moves reversely to a designated position to swing the steel; and if the next strip steel is detected not to reach the roller way area of the flying shear inlet, swinging the next strip steel at the specified position.
In a second aspect, the present invention provides, by an embodiment of the present invention, an apparatus for controlling a rolling rhythm, including: the time acquisition unit is used for acquiring time data, and the time data comprises the time when the current coiled steel leaves the fine descaling area and the time when the next coiled steel reaches the fine descaling area; the signal acquisition unit is used for acquiring signal data, and the signal data comprises a signal generated when the next coil of strip steel reaches a flying shear area and a signal generated when the current coil of strip steel leaves a finishing mill group; the speed acquisition unit is used for acquiring speed data, and the speed data comprises the real-time speed of the current strip steel roll and the preset speed of the next strip steel roll; the triggering unit is used for triggering the rear-end collision prevention function when detecting that at least one data in the time data, the signal data and the speed data meets the corresponding triggering condition; and the control unit is used for changing the distance between the adjacent steel strips.
In a third aspect, the present invention provides, by an embodiment of the present invention, an apparatus for controlling a rolling rhythm, including: a memory, a processor, a controller and code stored on the memory and executable on the processor, the controller implementing any of the methods of the first aspect when executing the code.
In a fourth aspect, the present invention provides a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, performs the steps of the method according to any one of the first aspect.
One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:
the embodiment of the invention discloses a method for controlling rolling rhythm, which comprises the steps of firstly respectively obtaining the time when the current coiled steel leaves a fine descaling area, the time when the next coil of strip steel reaches the fine descaling area, a signal generated when the next coil of strip steel reaches a flying shear area, a signal when the current coiled steel leaves a fine rolling unit, the real-time speed of the current coiled strip steel and the preset speed of the next coil of strip steel; then obtaining the time of the current coiled steel leaving the fine descaling area and the time of the next coiled steel reaching the fine descaling area; a signal generated when the next coil of strip steel reaches the flying shear area and a signal generated when the current coil of strip steel leaves the finishing mill group; three groups of data of the real-time speed of the current strip steel and the preset speed of the next strip steel are obtained; if at least one group of data in the three groups of data meets the corresponding triggering condition, triggering the rear-end collision prevention function; through the technical characteristics, when at least one group of data in the three groups of data changes, the rolling rhythm at the moment is changed, the rolling rhythm is monitored by monitoring the three groups of data, once the rhythm changes, the rear-end collision prevention function can be started at the highest speed, and the technical effect of preventing the adjacent strip steel from rear-end collision and stacking due to the change of the rolling rhythm is further realized.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a flowchart of a method of controlling a rolling tempo in an embodiment of the present invention;
FIG. 2 is a functional block diagram of an apparatus for controlling a rolling tempo in the embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an apparatus for controlling a rolling rhythm according to an embodiment of the present invention;
FIG. 4 is a block diagram of a computer-readable storage medium according to an embodiment of the present invention;
FIG. 5 is a diagram showing the positional relationship of the areas through which the strip passes in the embodiment of the present invention.
Detailed Description
The embodiment of the invention provides a method and a device for controlling rolling rhythm, solves the technical problem that in the prior art, the rolling rhythm is artificially controlled, and the adjacent strip steel is likely to be subjected to rear-end collision and stacking due to large rolling rhythm fluctuation, and achieves the technical effect of preventing the adjacent strip steel from being subjected to rear-end collision and stacking due to the change of the rolling rhythm.
In order to solve the technical problems, the embodiment of the invention has the following general idea:
firstly, respectively acquiring the time when the current coiled steel leaves a fine descaling area, the time when the next strip steel reaches the fine descaling area, a signal generated when the next strip steel reaches a flying shear area, a signal when the current coiled steel leaves a finishing mill set, the real-time speed of the current coiled steel and the preset speed of the next strip steel; then obtaining the time of the current coiled steel leaving the fine descaling area and the time of the next coiled steel reaching the fine descaling area; a signal generated when the next coil of strip steel reaches the flying shear area and a signal generated when the current coil of strip steel leaves the finishing mill group; three groups of data of the real-time speed of the current strip steel and the preset speed of the next strip steel are obtained; if at least one group of data in the three groups of data meets the corresponding triggering condition, triggering the rear-end collision prevention function; when at least one group of data in the three groups of data changes, the rolling rhythm at the moment is changed, the rolling rhythm is monitored by monitoring the three groups of data, once the rhythm changes, the rear-end collision prevention function can be started at the highest speed, and the technical effect of preventing the adjacent strip steel from rear-end collision and stacking due to the change of the rolling rhythm is further realized.
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
First, it is stated that the term "and/or" appearing herein is merely one type of associative relationship that describes an associated object, meaning that three types of relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
Example one
The embodiment provides a method for controlling a rolling rhythm, which is applied to electronic equipment, and the electronic equipment specifically may be: a PLC (Programmable Logic Controller), a computer, or the like, and the specific electronic device is not specifically limited in this embodiment. In addition, the method may be run in the form of code in an OS operating system, and the OS operating system may specifically be: windows operating system, DOS operating system, MAC operating system, etc., and the embodiment is not limited in particular.
Specifically, as shown in fig. 1, an embodiment of the present invention provides a method for controlling a rolling rhythm, including the following steps:
step S101: acquiring time data, wherein the time data comprises the time when the current coiled steel leaves the fine descaling area and the time when the next coiled steel reaches the fine descaling area; acquiring signal data, wherein the signal data comprises a signal generated when the next coil of strip steel reaches a flying shear area and a signal generated when the current coil of strip steel leaves a finishing mill group; and acquiring speed data, wherein the speed data comprises the real-time speed of the current strip steel roll and the preset speed of the next strip steel roll.
The step S101 specifically comprises the following steps A1-A3:
step A1: and acquiring time data, wherein the acquired time data comprises the time when the current coiled steel leaves the fine descaling area and the time when the next coiled steel reaches the fine descaling area.
More specifically, step a1 is to acquire the distance between the center of the flying shear area and the outlet of the fine descaling area and the speed of the current rolled strip leaving the fine descaling area when acquiring the time data, and then determine the time when the current rolled strip leaves the fine descaling area based on the following formula:
wherein, TFront sideThe time when the current coiled steel leaves the fine descaling area, L is the distance from the midpoint of the flying shear area to the outlet of the fine descaling area, VFront sideThe speed of the current coiled steel leaving the fine descaling area is shown as the speed;
simultaneously, the distance from the head of the next strip steel to the middle point of the flying shear area and the speed of the next strip steel when reaching the flying shear area are collected, and the time of the next strip steel reaching the fine descaling area is determined based on the following formula:
wherein, TRear endThe time when the next strip reaches the fine descaling area, L' is the distance from the head of the next strip to the middle point of the flying shear area, VRear endThe speed of the next coil of strip arriving at the flying shear area.
For example, step a1 acquires the distance between the center point of the flying shear area and the outlet of the fine descaling area, for example, 10m, and the speed of the current strip when the current strip leaves the fine descaling area, for example, 0.6m/s, and then based on the following formula:
wherein, TFront sideThe time when the current coiled steel leaves the fine descaling area, L is the distance from the midpoint of the flying shear area to the outlet of the fine descaling area, VFront sideThe speed of the current coiled steel leaving the fine descaling area is shown as the speed;
determining the time T of the current coiled steel leaving the fine descaling areaFront side＝20s；
And simultaneously acquiring the distance from the head of the next coil of strip steel to the midpoint of the flying shear area, such as 12m, and the speed of the next coil of strip steel when reaching the flying shear area, such as 1.2m/s, and then based on the following formula:
wherein, TRear endThe time when the next strip reaches the fine descaling area, and L' is the distance from the head of the next strip to the middle point of the flying shear area，VRear endThe speed of the next coil of strip steel when reaching the flying shear area;
determining the time T of the next coil of strip steel reaching the fine descaling areaRear end＝10s。
Step A2: acquiring signal data, the acquired signal data comprising: the signal generated when the next coil of strip reaches the flying shear area and the signal generated when the current coil of strip leaves the finishing mill group.
More specifically, in step a1, when the signal data is obtained, the shearing signal generated by the flying shears is obtained when the instrument detects that the next strip coil reaches the flying shears area, and when the instrument detects that the current strip coil leaves the finishing mill group, the signal for strip leaving is obtained.
For example, step a 2: when the thermal detector detects that the next strip steel reaches the flying shear area, a shearing signal generated by the flying shears is acquired, such as' shearing 13: 42 'when the thermal detector detects that the current coiled steel leaves the finishing mill group, a signal of strip leaving is obtained, such as' leave 13: 41".
Step A3: acquiring speed data, the acquired speed data comprising: the real-time speed of the current strip steel roll and the preset speed of the next strip steel roll.
More specifically, in the step a3, when the speed data is obtained, the real-time speed of the current coil of strip at the outlet of the corresponding finishing mill group is obtained when the current coil of strip is cast at each finishing mill stand, and the preset speed of the outlet of the corresponding finishing mill group is obtained when the next coil of strip is cast at the finishing mill group.
For example, step a 3: the obtained real-time speed of the current strip steel roll specifically comprises the following steps: when the current coil of strip steel is cast at the first finishing mill frame, acquiring the real-time speed of the current coil of strip steel at the outlet of the finishing mill group at the moment, such as 10.5 m/s; when the current coil of strip steel is cast at the second finishing mill frame, acquiring the real-time speed of the current coil of strip steel at the outlet of the finishing mill group at the moment, such as 10.5 m/s; when the current coil of strip steel is cast at the third finishing mill frame, acquiring the real-time speed of the current coil of strip steel at the outlet of the finishing mill group at the moment, such as 9.8 m/s; when the current coil of strip steel is cast at the fourth finishing mill frame, acquiring the real-time speed of the current coil of strip steel at the outlet of the finishing mill group at the moment, such as 9.9 m/s; when the current coil of strip steel is cast at the fifth finishing mill frame, acquiring the real-time speed of the current coil of strip steel at the outlet of the finishing mill group at the moment, such as 9.65 m/s; when the current coil of strip steel is cast at the sixth finishing mill frame, acquiring the real-time speed of the current coil of strip steel at the outlet of the finishing mill group at the moment, such as 10.1 m/s; when the current coil of strip steel is cast at the seventh finish rolling stand, acquiring the real-time speed of the current coil of strip steel at the outlet of the finish rolling unit, such as 10.2 m/s;
obtaining the preset speed of the next coil of strip steel, and specifically comprising: when the next coil of strip steel is cast at the finishing mill group, the preset speed at the outlet of the finishing mill group at the moment is obtained, for example, 9.5 m/s.
It should be noted that the steps a1-A3 are executed independently, and there is no strict execution order in the specific implementation.
Step S102: and if at least one of the time data, the signal data and the speed data meets the corresponding triggering condition, triggering the rear-end collision prevention function.
In a specific implementation process, when detecting that one or more of the following conditions exist, triggering a rear-end collision prevention function:
the first condition is as follows: the time that the current coiled steel leaves the fine descaling area is longer than the time that the next coiled steel reaches the fine descaling area, and the representation meets the triggering condition;
case two: the signal generated when the next coil of strip steel reaches the flying shear area is earlier than the signal generated when the current coil of strip steel leaves the finishing mill group in time, and the representation meets the triggering condition;
case three: the real-time speed of the current strip steel roll and the preset speed of the next strip steel roll meet the preset speed relationship, and the representation meets the triggering condition.
For the case one, for example, when it is detected that the current coil steel leaves the zone of fine descaling, for example TFront side20s and the time for the next coil of strip to reach the zone of fine descaling, e.g. TRear endObviously, the time for the current coiled steel to leave the fine descaling area is longer than the time for the next coiled steel to reach the fine descaling area, and the triggering condition is met。
For the second case, for example, a signal generated when the next coil of strip is detected to reach the flying shear area, such as "shear 13: 42 "and the signal when the current coil steel leaves the finishing train, for example" leave 13: 41', obviously, the signal generated when the next coil of strip steel arrives at the flying shear area is later in time than the signal generated when the current coil of strip steel leaves the finishing mill group, and the triggering condition is not met. For the third case, specifically, whether the real-time speed of the current strip steel roll and the preset speed of the next strip steel roll meet the preset speed relationship may be determined by executing step a 4:
a4: if the real-time speed of at least one current strip steel roll and the preset speed of the corresponding next strip steel roll meet the following formula, representing that the preset speed relation is met:
wherein, V'nWhen the next coil of strip steel is cast at the finishing mill group, the corresponding preset speed V at the outlet of the finishing mill groupnThe real-time speed of the outlet of the corresponding finishing mill group when the current coil of strip steel is cast at the nth finishing mill frame is obtained;
for example: assuming that the real-time speed of the current coil of strip steel at the outlet of the finishing mill group is 10.5m/s when the current coil of strip steel is cast at the first finishing mill frame, and the preset speed of the next coil of strip steel at the outlet of the finishing mill group is 9.5m/s when the next coil of strip steel is cast at the finishing mill group, whether the real-time speed of the current coil of strip steel and the preset speed of the next coil of strip steel meet the preset speed relation is judged through the following formula:
wherein, V'1When the next coil of strip steel is cast at the finishing mill group, the corresponding preset speed V at the outlet of the finishing mill groupnWhen the current coil of strip steel is cast at the 1 st finishing mill frame, the current coil of strip steel corresponds to the current coil of strip steelReal-time speed at the outlet of the finishing mill group;
substituting the corresponding value into the formula to obtain:
therefore, the preset speed relationship is not satisfied at this time;
another example is: assuming that the real-time speed of the current coil of strip steel at the outlet of the finishing mill group is 9.65m/s when the current coil of strip steel is cast at the fifth finishing mill frame, and the preset speed of the next coil of strip steel at the outlet of the finishing mill group is 9.5m/s when the next coil of strip steel is cast at the fifth finishing mill frame, whether the real-time speed of the current coil of strip steel and the preset speed of the next coil of strip steel meet the preset speed relationship is judged through the following formula:
wherein, V'1When the next coil of strip steel is cast at the finishing mill group, the corresponding preset speed V at the outlet of the finishing mill groupnThe real-time speed of the outlet of the corresponding finishing mill group when the current coiled steel is cast at the 5 th finishing mill frame is obtained;
substituting the corresponding value into the formula to obtain:
therefore, the preset speed relationship is satisfied at this time.
It should be noted that: in the third example, as long as at least one of the real-time speed of the current strip steel and the preset speed of the next strip steel meet the preset speed relationship, the trigger condition is represented to be met.
On an actual production line of a finishing mill group comprising 7 finishing mill frames, when a current coil of strip steel is cast at least one finishing mill frame of the 7 finishing mill frames, the real-time speed of the current coil of strip steel at the outlet of the finishing mill group and the preset speed of the corresponding next coil of strip steel at the outlet of the steel finishing mill group meet the preset speed relationship, and then the triggering condition is met.
In the embodiment of the present invention, after the anti-rear-end collision function is triggered in step S102, specifically, the anti-rear-end collision function prevents the next strip from rear-end collision with the current strip by changing the distance between adjacent strips, i.e., changing the distance between the next strip and the current strip.
In the specific implementation, the rear-end collision prevention function can only comprise a rear-end collision prevention treatment mode, for example, the next strip steel is controlled to swing at a specified position so as to enlarge the distance between the next strip steel and the current strip steel.
Of course, in order to improve the reliability of preventing rear-end collision, different rear-end collision prevention processing modes can be correspondingly adopted according to the different areas where the next coil of strip steel is located, which is specifically described as follows:
if the next strip steel is detected to reach the flying shear area but not reach the fine descaling area, the flying shears in the flying shear area chop the next strip steel along the width direction, the next strip steel is chopped into a front part and a rear part of the flying shears, so that the front part of the flying shears in the roller way area of the flying shears is moved reversely to an appointed position to swing steel, and the front part of the flying shears and the rear part of the flying shears keep a certain distance when the next strip steel is swung at the appointed position; when the rear-end collision prevention function is triggered, if the next strip steel is detected not to reach the roller way area of the flying shear inlet, the next strip steel is swung at the designated position.
For example, when the rear-end collision prevention function is triggered, if a thermal detector in the flying shear area detects that the next strip steel reaches the flying shear area, but a thermal detector in the fine descaling area does not detect that the next strip steel reaches the fine descaling area, the flying shears in the flying shear area chops the next strip steel along the width direction, the next strip steel is chopped into a front flying shear part in a flying shear inlet roller way and a rear flying shear part in the fine descaling area, so that the front flying shear part in the flying shear inlet roller way area reaches a specified steel swinging position in a reverse direction movement mode to carry out steel swinging operation, a certain distance is kept between the front flying shear part and the rear flying shear part, and adjacent strip steels cannot collide together to cause rear-end collision accidents, so that the rear-end collision prevention function is achieved; when the rear-end collision prevention function is triggered, if the thermal detection instrument in the inlet roller way area of the flying shears detects that the next strip steel does not reach the inlet roller way area of the flying shears, steel swinging operation is carried out when the next strip steel reaches the designated position, a certain distance exists between the inlet roller way of the flying shears and the cutting head of the flying shears, adjacent strip steels cannot collide together to cause rear-end collision accidents, and the rear-end collision prevention function is achieved.
The technical scheme in the embodiment of the invention at least has the following technical effects or advantages:
1. in the embodiment of the invention, a method for controlling rolling rhythm is disclosed, which comprises the following steps: firstly, respectively acquiring the time when the current coiled steel leaves a fine descaling area, the time when the next strip steel reaches the fine descaling area, a signal generated when the next strip steel reaches a flying shear area, a signal when the current coiled steel leaves a finishing mill set, the real-time speed of the current coiled steel and the preset speed of the next strip steel; then obtaining the time of the current coiled steel leaving the fine descaling area and the time of the next coiled steel reaching the fine descaling area; a signal generated when the next coil of strip steel reaches the flying shear area and a signal generated when the current coil of strip steel leaves the finishing mill group; three groups of data of the real-time speed of the current strip steel and the preset speed of the next strip steel are obtained; if at least one group of data in the three groups of data meets the corresponding triggering condition, triggering the rear-end collision prevention function; when at least one group of data in the three groups of data changes, the rolling rhythm at the moment is shown to change, the rolling rhythm is monitored by monitoring the three groups of data, once the rhythm changes, the rear-end collision prevention function can be started at the highest speed, the technical problem that the rolling rhythm is manually controlled and the adjacent strip steel is prone to rear-end collision and stacking due to large rolling rhythm fluctuation in the prior art is solved, and the technical effect of preventing the adjacent strip steel from rear-end collision and stacking due to the change of the rolling rhythm is achieved.
Example two
Based on the same invention concept, the embodiment of the invention provides a device for controlling rolling rhythm.
Referring to fig. 2, an embodiment of the present invention provides an apparatus for controlling a rolling rhythm, including:
the time obtaining unit 201 is configured to obtain time data, where the time data includes a time when the current coiled steel leaves the fine descaling area and a time when the next coiled steel reaches the fine descaling area;
the signal acquisition unit 202 is used for acquiring signal data, wherein the signal data comprises a signal generated when the next coiled steel strip reaches the flying shear area and a signal generated when the current coiled steel strip leaves the finishing mill group;
the speed obtaining unit 203 is configured to obtain speed data, where the speed data includes a real-time speed of a current strip steel roll and a preset speed of a next strip steel roll;
the triggering unit 204 is used for triggering the rear-end collision prevention function when detecting that at least one of the time data, the signal data and the speed data meets the corresponding triggering condition;
and the control unit 205 is used for changing the distance between the adjacent steel strips.
Since the apparatus for controlling a rolling process described in this embodiment is an electronic device used for implementing the method for controlling a rolling process in this embodiment of the present invention, a person skilled in the art can understand a specific implementation manner of the electronic device of this embodiment and various modifications thereof based on the method for controlling a rolling process described in this embodiment of the present invention, and therefore, how to implement the method in this embodiment of the present invention by the electronic device is not described in detail here. It is within the scope of the present invention that the skilled person may implement the electronic device used in the method for controlling the rolling process according to the embodiment of the present invention.
The technical scheme in the embodiment of the invention at least has the following technical effects or advantages:
1. in an embodiment of the present invention, a device for controlling a rolling rhythm is disclosed, including: the time acquisition unit can acquire time data, wherein the time data comprises the time when the current coiled steel leaves the fine descaling area and the time when the next coiled steel reaches the fine descaling area; the signal acquisition unit can acquire signal data, wherein the signal data comprises a signal generated when the next coiled steel strip reaches the flying shear area and a signal generated when the current coiled steel strip leaves the finishing mill group; the speed acquisition unit can acquire speed data, wherein the speed data comprises the real-time speed of the current strip steel roll and the preset speed of the next strip steel roll; the triggering unit can trigger the rear-end collision prevention function when detecting that at least one data in the time data, the signal data and the speed data meets the corresponding triggering condition; the control unit can change the distance between the adjacent steel strips. The rolling rhythm is monitored by monitoring three groups of data acquired by the three acquisition units, once the rhythm is changed, the rear-end collision prevention function can be started at the highest speed, the technical problem that in the prior art, the rolling rhythm is manually controlled, and the rear-end collision and stacking of adjacent strip steels are easily caused by large rolling rhythm fluctuation is solved, and the technical effect of preventing the rear-end collision and stacking of the adjacent strip steels caused by the change of the rolling rhythm is realized.
EXAMPLE III
Based on the same invention concept, the embodiment of the invention provides equipment for controlling the rolling rhythm.
Referring to fig. 3, an embodiment of the present invention provides an apparatus for controlling a rolling rhythm, including: a memory 301, a processor 302, a controller 303, and code 304 stored on the memory and executable on the processor, the controller implementing any of the methods of the first aspect when executing the code.
Example four
Based on the same inventive concept, as shown in fig. 4, the present embodiment provides a computer-readable storage medium 400, on which a computer program 401 is stored, which program 401, when being executed by a processor, realizes the steps of any of the methods of the first aspect.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the invention may take the form of a computer product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable code embodied therein.
The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer instructions. These computer instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A method of controlling a rolling tempo, comprising:
acquiring time data, wherein the time data comprises the time when the current coiled steel leaves the fine descaling area and the time when the next coiled steel reaches the fine descaling area;
acquiring signal data, wherein the signal data comprises a signal generated when the next coil of strip steel reaches a flying shear area and a signal generated when the current coil of strip steel leaves a finishing mill group;
acquiring speed data, wherein the speed data comprises the real-time speed of the current strip steel roll and the preset speed of the next strip steel roll;
and if at least one of the time data, the signal data and the speed data meets a corresponding triggering condition, triggering a rear-end collision prevention function, wherein the rear-end collision prevention function is used for changing the distance between adjacent strip steels.
2. The method of claim 1, wherein said obtaining time data comprises:
acquiring the distance between the middle point of the flying shear area and the outlet of the fine descaling area, and the speed of the current coiled steel strip when the current coiled steel strip leaves the fine descaling area;
determining the time for the current coiled steel to leave the fine descaling area based on the following formula:
wherein, TFront sideThe time when the current coiled steel leaves the fine descaling area, L is the distance from the middle point of the flying shear area to the outlet of the fine descaling area, and VFront sideStrip steel separation for the current coilSpeed of opening the fine scale removal zone;
the distance from the head of the next strip steel to the middle point of the flying shear area and the speed of the next strip steel when reaching the flying shear area are obtained, and the time of the next strip steel when reaching the fine descaling area is determined based on the following formula:
wherein, TRear endThe time when the next strip reaches the fine descaling area, L' is the distance from the head of the next strip to the middle point of the flying shear area, VRear endThe speed of the next coil of strip steel when the next coil of strip steel reaches the flying shear area.
3. The method of claim 2, wherein the time data satisfies a corresponding trigger condition, specifically:
and when the time that the current coiled steel leaves the fine descaling area is longer than the time that the next coiled steel reaches the fine descaling area, the condition that the triggering condition is met.
4. The method according to claim 3, wherein the signal data satisfies a corresponding trigger condition, in particular:
and when the signal generated when the next coil of strip steel reaches the flying shear area is earlier than the signal generated when the current coil of strip steel leaves the finishing mill group in time, the triggering condition is met.
5. The method of claim 4, wherein the speed data satisfies a corresponding trigger condition, comprising:
when the current coil of strip steel is cast at each finishing mill frame, acquiring the real-time speed at the outlet of the corresponding finishing mill group;
when the next coil of strip steel is cast at the finishing mill group, acquiring the preset speed at the outlet of the corresponding finishing mill group;
judging whether the real-time speed of the current coil of strip steel corresponding to the nth finishing mill frame and the preset speed of the next coil of strip steel meet a preset speed relation or not aiming at the nth finishing mill frame in the finishing mill group, wherein N is 1-N, and N is the number of frames of the finishing mill group;
and if the preset speed relation is met, the speed data meets the corresponding triggering conditions.
6. The method of claim 5, wherein said determining whether a preset speed relationship is satisfied between a real-time speed of the current coil of strip corresponding to the nth finishing stand and a preset speed of the next coil of strip comprises:
if the real-time speed of the current strip steel roll and the preset speed of the next strip steel roll meet the following formula:
wherein, V'nWhen the next coil of strip steel is cast at the finishing mill group, the corresponding preset speed V at the outlet of the finishing mill groupnThe real-time speed of the current coil of strip steel at the outlet of the finishing mill group is correspondingly set when the current coil of strip steel is cast at the nth finishing mill frame;
i.e. the speed data meets the corresponding trigger condition.
7. The method of claim 6, wherein the triggering an anti-tailgating function comprises:
if the next strip steel is detected to reach the flying shear area but not reach the fine descaling area, the flying shears in the flying shear area chop the next strip steel along the width direction, the next strip steel is chopped into a front part and a rear part of the flying shears, and the front part of the flying shears in the roller way area of the flying shears moves reversely to a designated position to swing the steel;
and if the next strip steel is detected not to reach the roller way area of the flying shear inlet, swinging the next strip steel at the specified position.
8. An apparatus for controlling a rolling tempo, comprising:
the time acquisition unit is used for acquiring time data, and the time data comprises the time when the current coiled steel leaves the fine descaling area and the time when the next coiled steel reaches the fine descaling area;
the signal acquisition unit is used for acquiring signal data, and the signal data comprises a signal generated when the next coil of strip steel reaches a flying shear area and a signal generated when the current coil of strip steel leaves a finishing mill group;
the speed acquisition unit is used for acquiring speed data, and the speed data comprises the real-time speed of the current strip steel roll and the preset speed of the next strip steel roll;
the triggering unit is used for triggering the rear-end collision prevention function when detecting that at least one data in the time data, the signal data and the speed data meets the corresponding triggering condition;
and the control unit is used for changing the distance between the adjacent steel strips.
9. An apparatus for controlling a rolling tempo, comprising: memory, processor, controller, and code stored on the memory and executable on the processor, wherein the controller implements the method of any of claims 1-7 when executing the code.
10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 7.
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