阅读说明：本技术 一种活套头部起大套的控制系统及方法 (Control system and method for looping head to get big loop ) 是由 朱春韶 朱国俊 马东浩 刘逖 王鑫 桂立波 刘晓明 高耀 于 2021-07-23 设计创作，主要内容包括：本发明提供了一种活套头部起大套的控制系统及方法,涉及钢铁生产技术领域,包括处理展示系统、识别及张力驱动系统、量化区间控制系统、量化时间控制系统、综合调节固化系统,所述处理展示系统用于采集1#活套的头部套高,并进行模拟量转换及可编程控制器的存储；本发明通过对1#活套双线模式修正量的精准量化控制,可以实现对1#活套头部套高的量化可控,进而突破生产瓶颈,能够为生产过程中的提速及短时间活套波动提供稳态区间,进而避免1#活套及预精轧入口堆钢,通过对1#活套上游机架及下游机架的精准量化的速度控制,可以实现机架速度控制及活套套高控制双向可控,进而为生产的稳顺及生产过程中的抗扰及高产提供强有力的支撑。(The invention provides a control system and a method for looping head large loop, which relate to the technical field of steel production, and comprise a processing and displaying system, an identification and tension driving system, a quantization interval control system, a quantization time control system and a comprehensive adjustment and solidification system, wherein the processing and displaying system is used for acquiring the looping height of a 1# loop and performing analog quantity conversion and storage of a programmable controller; according to the invention, through accurate quantitative control of the 1# loop double-line mode correction quantity, quantitative control of the loop height of the 1# loop head can be realized, so that the production bottleneck is broken through, a stable state interval can be provided for speed increase and short-time loop fluctuation in the production process, further steel stacking at the 1# loop and a pre-finish rolling inlet is avoided, through accurate quantitative speed control of an upstream rack and a downstream rack of the 1# loop, bidirectional control of the rack speed and the loop height can be realized, and further, strong support is provided for stable and smooth production and disturbance resistance and high yield in the production process.)

1. The utility model provides a control system that loop head plays major loop, is including handling display system, discernment and tension actuating system, quantization interval control system, quantization time control system, comprehensive regulation solidification system which characterized in that: the processing and displaying system is used for acquiring the head loop height of the 1# loop, performing analog quantity conversion and storage of the programmable controller, and then performing man-machine picture data processing and continuity data display on the head loop height of the 1# loop; the identification and tension driving system identifies the sleeve height of the head through the central processing unit and compares the sleeve height with the set sleeve height, and performs the identification and judgment of the 1# loop head during the loop lifting process according to different rolling specification sleeve height data and the set sleeve height, and performs the tension relief process;

the quantitative interval control system is used for controlling the quantitative cutoff time of the tension relief force and then carrying out interval steady-state control according to the correction quantity in the double-line mode in the continuous speed and 1# loop height adjusting process; after the quantitative time control system identifies that the head of the 1# loop starts to be a big loop, tensioning is carried out on the pre-finish rolling frame, and then quantitative cut-off time of the pre-finish rolling tensioning is controlled; and the comprehensive adjusting and solidifying system is used for performing interval steady-state control according to the double-line mode correction amount in the continuous speed and 1# loop height adjusting process and then solidifying the related identification big data and operation big data of the same rolling specification.

2. A control system for a loop head looper as claimed in claim 1 wherein: the processing and displaying system is used for carrying out signal acquisition, signal conversion and signal transmission on a loop height signal on site and a speed signal of a related rolling stand; the identification and tension drive system is used for identifying and collecting the tension of the upstream middle rolling stand before the 1# loop and the downstream pre-finishing rolling stand after the 1# loop, and performing tension drive adjustment by combining dynamic quantitative data of correction; the quantitative interval control system is used for accurately and quantitatively controlling a time interval and a correction interval to realize the interval control of the whole rolling time period; the quantitative time control system realizes the quick response of tension adjustment to the 1# loop correction amount through the optimal time interval control point obtained through big data research and repeated tests on site and through the accurate control of the optimal time control point; the comprehensive adjusting and curing system realizes the adjustment of the 1# loop large loop based on the optimization of optimal adjustment and on-site closed loop feedback.

3. A control system for a loop head looper as claimed in claim 2 wherein: the 1# loop is a horizontal loop, the horizontal scannable and calibratable range is 700mm, the loop height of a rolled piece in the loop is scanned and detected by a loop scanner, and the loop height is converted into an analog quantity voltage signal of 0-10V by the signal and transmitted to a programmable controller and a related memory card by a shielded cable; the specific flow of the data processing and the continuous data display of the man-machine picture comprises the following steps: firstly, variable design, variable naming and variable filing are carried out on the height signals of the analog quantity, then variable grouping and program statement design are carried out, and finally, the design of a block component of an HMI (human machine interface) man-machine picture and the connection of continuous variables are carried out.

4. A control system for a loop head looper as claimed in claim 3 wherein: the head sleeve height is the sleeve height and the sleeve amount before the torque and the current of the upstream frame and the downstream frame reach steady-state values, the head sleeve height has regulation and control force on the rolling impact force of the upstream frame and the downstream frame, the sleeve height is set to be obtained according to the sleeve lifting height of the sleeve lifting roller and the comprehensive measurement and calculation of a parabolic curve, and the set height realizes the optimal adjustment of the tension between the two frames.

5. The control system for loop head looper enlargement of claim 4 wherein: the double line mode is one of a double high line production mode; the correction is the ratio of the speed regulating quantity of the selected target stand to the highest speed, and the interval steady-state control refers to the stable control of the height of the loop in a rolling interval and is used for realizing the quantitative stable control of the loop per se, the height of the loop of an upstream stand and a downstream stand connected with the loop and the speed of the stands.

6. The control system for loop head looper enlargement of claim 5 wherein: the standard of the 1# loop head for starting the big loop is that the actual height of the loop head exceeds the set height by 150%; and pre-finish rolling is an independent rolling line unit, and the pre-finish rolling is integrally combined through a pre-finish rolling protective cover, so that the integral connection of the pre-finish rolling mill group to the 1# loop is realized.

7. The control system for loop head looper enlargement of claim 6 wherein: the continuous speed and the 1# loop height adjusting process refer to rolling connection and speed connection after the head is sleeved; the specific process of identifying and operating big data is as follows: and the identification data and the operation data are integrated, optimized and refined through a human-computer picture and high-speed data acquisition system, and then final operation and optimal operation solidification are realized.

8. A control method for a loop head to lift a big loop is characterized by comprising the following steps:

the method comprises the following steps: the double-line 1# loop is arranged among 13 middle rolling stands, 2# flying shears and 14 pre-finish rolling stands, the head loop height of the 1# loop is collected by a processing and displaying system, and analog quantity conversion and storage of a programmable controller are carried out;

step two: utilizing a processing and displaying system to perform man-machine picture data processing and continuous data display on the sleeve height of the head of the 1# loop;

step three: starting an identification and tension driving system, identifying the sleeve height of the head through a central processing unit, comparing the sleeve height with a set sleeve height, and identifying and judging the 1# loop head to be enlarged according to different rolling specification sleeve height data and the set sleeve height;

step four: after the system identifies that the head of the 1# loop has a big loop, performing tension relief treatment on 6 frames, 7 frames, 8 frames, 9 frames, 10 frames, 11 frames, 12 frames and 13 frames of the middle rolling respectively;

step five: starting a quantitative interval control system to control the quantitative cut-off time of the tension relief force, wherein the quantitative cut-off time of the tension relief force is when the correction amount of the 1# loop in the double-line mode reaches 5%;

step six: by a quantitative interval control system, interval steady-state control is carried out according to the correction of 5-10% in a double-line mode in the process of continuous speed and 1# loop height adjustment;

step seven: starting a quantitative time control system, and after the head of the 1# loop is identified to be 5 seconds of the large loop, performing tension processing on 14 frames, 15 frames, 16 frames and 17 frames of pre-finish rolling;

step eight: controlling the quantitative cut-off time of the pre-finish rolling tension to be 8% of the correction amount of the double-line mode of the 1# loop by using a quantitative time control system;

step nine: starting the comprehensive adjusting and solidifying system, performing interval steady-state control according to the correction quantity of a double-line mode reaching 6-9% in the continuous speed and 1# loop height adjusting process, and solidifying the related identification big data and operation big data of the same rolling specification to ensure that the head of the 1# loop does not have a big loop.

9. The method for controlling the loop head to lift the big loop according to claim 8, wherein: in the fourth step, two steel passing channels are respectively arranged on the 6, 7, 8, 9, 10, 11, 12 and 13 middle rolling mills, the two steel passing channels respectively correspond to the 6, 7, 8, 9, 10, 11, 12, 13 and 2 middle rolling mills, 6, 7, 8, 9, 10, 11, 12 and 13, the tension matching of the two middle rolling channels realizes the stability and standard reaching of the outlet material type of the middle rolling mill frame, the tension eliminating treatment is that the reduction speed adjustment in the reverse rolling line direction is carried out through the speed matching relation of the 6, 7, 8, 9, 10, 11, 12 and 13 middle rolling mills, and the adjustment mode is that the fast reduction and slow reduction adjustment are carried out through a speed adjusting rocker of a main control console.

10. The method for controlling the loop head to lift the big loop according to claim 8, wherein: and seventhly, pre-finish rolling is an independent rolling line and is specifically divided into 1-line pre-finish rolling and 2-line pre-finish rolling, wherein the 1-line pre-finish rolling is respectively provided with 14, 15, 16 and 17 lines, the 2-line pre-finish rolling is respectively provided with 14, 15, 16 and 17 lines, and the pre-finish rolling is integrally combined through a pre-finish rolling protective cover.

Technical Field

The invention relates to the technical field of steel production, in particular to a control system and a control method for a loop head part enlarging sleeve.

Background

The loop at the 1# horizontal side of the high-speed wire double line of a steel rolling mill is very important and is directly related to whether steel is piled in a pre-finish rolling area, the speed fluctuation of a finish rolling unit, the speed stability of a wire laying machine and whether wire laying is disordered; 1# loop always has the condition of large loop since high line production, but the frequency of the previous occurrence is very low, and the 'large degree' of the large loop is not very serious, so the influence is not particularly obvious;

along with the increase of the production age and the acceleration of the production rhythm, the occurrence frequency of the large loop (set as 200, actually more than 500) at the head of the high-speed wire 1# loop is almost more than 98%, the large degree of the large loop is very serious, even more than 700mm, the steel is directly stacked in a pre-finish rolling area, the head speed of a rolled piece of a finish rolling unit is severely fluctuated, the head speed of a rolling piece of a spinning machine is greatly fluctuated, the spinning quality is degraded due to disorder spinning, and the wire hanging and coil collecting area jamming of an air-cooled roller table caused by irregular spinning are caused, and the problem that the large loop is strictly lifted at the head of the high-speed wire 1# loop becomes a bottleneck restricting the stable high-yield of a high-speed wire process.

Disclosure of Invention

Aiming at the problems, the invention provides a control system and a control method for a loop head large loop, which can realize the quantitative control of the loop height of the 1# loop head through the accurate quantitative control of the 1# loop double-line mode correction quantity, further break through the production bottleneck, provide a steady-state interval for the speed increase and the short-time loop fluctuation in the production process, further avoid the steel piling of the 1# loop and a pre-finish rolling inlet, realize the bidirectional control of the speed of a rack and the high control of the loop through the accurate quantitative speed control of an upstream rack and a downstream rack of the 1# loop, and further provide powerful support for the stability and smoothness of production and the anti-interference and high yield in the production process.

In order to realize the purpose of the invention, the invention is realized by the following technical scheme: a control system for a loop head to lift a big loop comprises a processing and displaying system, an identification and tension driving system, a quantization interval control system, a quantization time control system and a comprehensive adjusting and curing system, wherein the processing and displaying system is used for acquiring the loop height of the 1# loop, performing analog quantity conversion and storage of a programmable controller, and then performing man-machine picture data processing and continuous data display on the loop height of the 1# loop; the identification and tension driving system identifies the sleeve height of the head through the central processing unit and compares the sleeve height with the set sleeve height, and performs the identification and judgment of the 1# loop head during the loop lifting process according to different rolling specification sleeve height data and the set sleeve height, and performs the tension relief process;

the quantitative interval control system is used for controlling the quantitative cutoff time of the tension relief force and then carrying out interval steady-state control according to the correction quantity in the double-line mode in the continuous speed and 1# loop height adjusting process; after the quantitative time control system identifies that the head of the 1# loop starts to be a big loop, tensioning is carried out on the pre-finish rolling frame, and then quantitative cut-off time of the pre-finish rolling tensioning is controlled; and the comprehensive adjusting and solidifying system is used for performing interval steady-state control according to the double-line mode correction amount in the continuous speed and 1# loop height adjusting process and then solidifying the related identification big data and operation big data of the same rolling specification.

The further improvement lies in that: the processing and displaying system is used for carrying out signal acquisition, signal conversion and signal transmission on a loop height signal on site and a speed signal of a related rolling stand; the identification and tension drive system is used for identifying and collecting the tension of the upstream middle rolling stand before the 1# loop and the downstream pre-finishing rolling stand after the 1# loop, and performing tension drive adjustment by combining dynamic quantitative data of correction; the quantitative interval control system is used for accurately and quantitatively controlling a time interval and a correction interval to realize the interval control of the whole rolling time period; the quantitative time control system realizes the quick response of tension adjustment to the 1# loop correction amount through the optimal time interval control point obtained through big data research and repeated tests on site and through the accurate control of the optimal time control point; the comprehensive adjusting and curing system realizes the adjustment of the 1# loop large loop based on the optimization of optimal adjustment and on-site closed loop feedback.

The further improvement lies in that: the 1# loop is a horizontal loop, the horizontal scannable and calibratable range is 700mm, the loop height of a rolled piece in the loop is scanned and detected by a loop scanner, and the loop height is converted into an analog quantity voltage signal of 0-10V by the signal and transmitted to a programmable controller and a related memory card by a shielded cable; the specific flow of the data processing and the continuous data display of the man-machine picture comprises the following steps: firstly, variable design, variable naming and variable filing are carried out on the height signals of the analog quantity, then variable grouping and program statement design are carried out, and finally, the design of a block component of an HMI (human machine interface) man-machine picture and the connection of continuous variables are carried out.

The further improvement lies in that: the head sleeve height is the sleeve height and the sleeve amount before the torque and the current of the upstream frame and the downstream frame reach steady-state values, the head sleeve height has regulation and control force on the rolling impact force of the upstream frame and the downstream frame, the sleeve height is set to be obtained according to the sleeve lifting height of the sleeve lifting roller and the comprehensive measurement and calculation of a parabolic curve, and the set height realizes the optimal adjustment of the tension between the two frames.

The further improvement lies in that: the double line mode is one of a double high line production mode; the correction is the ratio of the speed regulating quantity of the selected target stand to the highest speed, and the interval steady-state control refers to the stable control of the height of the loop in a rolling interval and is used for realizing the quantitative stable control of the loop per se, the height of the loop of an upstream stand and a downstream stand connected with the loop and the speed of the stands.

The further improvement lies in that: the standard of the 1# loop head for starting the big loop is that the actual height of the loop head exceeds the set height by 150%; and pre-finish rolling is an independent rolling line unit, and the pre-finish rolling is integrally combined through a pre-finish rolling protective cover, so that the integral connection of the pre-finish rolling mill group to the 1# loop is realized.

The further improvement lies in that: the continuous speed and the 1# loop height adjusting process refer to rolling connection and speed connection after the head is sleeved; the specific process of identifying and operating big data is as follows: and the identification data and the operation data are integrated, optimized and refined through a human-computer picture and high-speed data acquisition system, and then final operation and optimal operation solidification are realized.

A control method for a loop head to lift a big loop comprises the following steps:

the method comprises the following steps: the double-line 1# loop is arranged among 13 middle rolling stands, 2# flying shears and 14 pre-finish rolling stands, the head loop height of the 1# loop is collected by a processing and displaying system, and analog quantity conversion and storage of a programmable controller are carried out;

step two: utilizing a processing and displaying system to perform man-machine picture data processing and continuous data display on the sleeve height of the head of the 1# loop;

step three: starting an identification and tension driving system, identifying the sleeve height of the head through a central processing unit, comparing the sleeve height with a set sleeve height, and identifying and judging the 1# loop head to be enlarged according to different rolling specification sleeve height data and the set sleeve height;

step four: after the system identifies that the head of the 1# loop has a big loop, performing tension relief treatment on 6 frames, 7 frames, 8 frames, 9 frames, 10 frames, 11 frames, 12 frames and 13 frames of the middle rolling respectively;

step five: starting a quantitative interval control system to control the quantitative cut-off time of the tension relief force, wherein the quantitative cut-off time of the tension relief force is when the correction amount of the 1# loop in the double-line mode reaches 5%;

step six: by a quantitative interval control system, interval steady-state control is carried out according to the correction of 5-10% in a double-line mode in the process of continuous speed and 1# loop height adjustment;

step seven: starting a quantitative time control system, and after the head of the 1# loop is identified to be 5 seconds of the large loop, performing tension processing on 14 frames, 15 frames, 16 frames and 17 frames of pre-finish rolling;

step eight: controlling the quantitative cut-off time of the pre-finish rolling tension to be 8% of the correction amount of the double-line mode of the 1# loop by using a quantitative time control system;

step nine: starting the comprehensive adjusting and solidifying system, performing interval steady-state control according to the correction quantity of a double-line mode reaching 6-9% in the continuous speed and 1# loop height adjusting process, and solidifying the related identification big data and operation big data of the same rolling specification to ensure that the head of the 1# loop does not have a big loop.

The further improvement lies in that: in the fourth step, two steel passing channels are respectively arranged on the 6, 7, 8, 9, 10, 11, 12 and 13 middle rolling mills, the two steel passing channels respectively correspond to the 6, 7, 8, 9, 10, 11, 12, 13 and 2 middle rolling mills, 6, 7, 8, 9, 10, 11, 12 and 13, the tension matching of the two middle rolling channels realizes the stability and standard reaching of the outlet material type of the middle rolling mill frame, the tension eliminating treatment is that the reduction speed adjustment in the reverse rolling line direction is carried out through the speed matching relation of the 6, 7, 8, 9, 10, 11, 12 and 13 middle rolling mills, and the adjustment mode is that the fast reduction and slow reduction adjustment are carried out through a speed adjusting rocker of a main control console.

The further improvement lies in that: and seventhly, pre-finish rolling is an independent rolling line and is specifically divided into 1-line pre-finish rolling and 2-line pre-finish rolling, wherein the 1-line pre-finish rolling is respectively provided with 14, 15, 16 and 17 lines, the 2-line pre-finish rolling is respectively provided with 14, 15, 16 and 17 lines, and the pre-finish rolling is integrally combined through a pre-finish rolling protective cover.

The invention has the beneficial effects that:

1. according to the invention, through accurate quantitative control of the 1# loop double-line mode correction quantity, quantitative control of the loop height of the 1# loop head can be realized, so that the production bottleneck is broken through, a stable state interval can be provided for speed increase and short-time loop fluctuation in the production process, further steel stacking at the 1# loop and a pre-finish rolling inlet is avoided, through accurate quantitative speed control of an upstream rack and a downstream rack of the 1# loop, bidirectional control of the rack speed and the loop height can be realized, and further, strong support is provided for stable and smooth production and disturbance resistance and high yield in the production process.

2. The processing and displaying system can be used for carrying out signal acquisition, signal conversion, signal transmission and the like on a field loop height signal and a speed signal of an associated rolling rack, the systematic processing can realize visualization and integration of important key signals, can provide high-efficiency information service for main control personnel, can provide comprehensive big data support for the processing system, and adds anti-shielding processing to a transmission cable in the signal transmission process, so that the stability, the accuracy and the anti-interference performance of the signal can be greatly improved.

3. The identification and tension driving system can identify and collect the tension of the upstream rack of the middle rolling before the 1# loop and the downstream rack of the pre-finish rolling after the 1# loop, and performs tension driving adjustment by combining dynamic quantitative data of correction, and the adjustment mode of tension driving at two ends is innovative, so that the adjustment efficiency of the 1# loop when the 1# loop is started can be greatly improved, and further, the adjustment efficiency and the adjustment effect in the rolling process are powerfully guaranteed.

4. The quantitative interval control system can realize accurate quantitative control of a time interval and a correction interval, realize interval control of the whole rolling time period, and realize small-step tension and speed control.

5. According to the quantitative time control system, the optimal time interval control point is obtained through big data research and field repeated tests, the quick response of tension adjustment to the correction quantity of the 1# loop can be realized through the accurate control of the optimal time control point, the undisturbed control and adjustment of the loop can be realized between the pre-finishing rolling frame and the pre-finishing rolling mill group through the innovative design, and wave beating and steel piling in the pre-finishing rolling mill group are further avoided.

6. The comprehensive adjusting and curing system disclosed by the invention realizes quick, efficient and undisturbed adjustment of the large loop of the 1# loop based on optimal adjustment and optimization of on-site closed loop feedback, can quickly eliminate the excess rolled piece between the middle rolling frame and the pre-finishing rolling frame, further avoids a large amount of steel stacking and bending extrusion steel stacking, and improves the rolling smoothness and yield.

Drawings

FIG. 1 is a schematic diagram of the system of the present invention;

FIG. 2 is a flow chart of the method of the present invention.

Detailed Description

In order to further understand the present invention, the following detailed description will be made with reference to the following examples, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.

Example one

According to fig. 1, the embodiment provides a control system for looping head raising, which includes a processing and displaying system, an identification and tension driving system, a quantization interval control system, a quantization time control system, and a comprehensive adjustment and solidification system, wherein the processing and displaying system is used for acquiring the loop height of the loop 1# and performing analog quantity conversion and programmable controller storage, and then performing man-machine picture data processing and continuity data display on the loop height of the loop 1 #; the identification and tension driving system identifies the sleeve height of the head through the central processing unit and compares the sleeve height with the set sleeve height, and performs the identification and judgment of the 1# loop head during the loop lifting process according to different rolling specification sleeve height data and the set sleeve height, and performs the tension relief process;

the quantitative interval control system is used for controlling the quantitative cutoff time of the tension relief force and then carrying out interval steady-state control according to the correction quantity in the double-line mode in the continuous speed and 1# loop height adjusting process; after the quantitative time control system identifies that the head of the 1# loop starts to be a big loop, tensioning is carried out on the pre-finish rolling frame, and then quantitative cut-off time of the pre-finish rolling tensioning is controlled; and the comprehensive adjusting and solidifying system is used for performing interval steady-state control according to the double-line mode correction amount in the continuous speed and 1# loop height adjusting process and then solidifying the related identification big data and operation big data of the same rolling specification.

The processing and displaying system is used for carrying out signal acquisition, signal conversion and signal transmission on a field loop height signal and a speed signal of an associated rolling rack, visualization and integration of important key signals can be realized through systematic processing, high-efficiency information service can be provided for main control personnel, meanwhile, comprehensive big data support can be provided for the processing system, and anti-shielding processing is added to a transmission cable in the signal transmission process, so that the stability, accuracy and anti-interference performance of the signals can be greatly improved; the identification and tension driving system is used for identifying and collecting tension of a middle rolling upstream rack before the 1# loop and a pre-finishing rolling downstream rack after the 1# loop, and performing tension driving adjustment by combining dynamic quantitative data of correction quantity, and the adjustment mode innovation of tension driving at two ends can greatly improve the adjustment efficiency of the 1# loop when the 1# loop is expanded, so that powerful guarantee is provided for the adjustment efficiency and the adjustment effect in the rolling process; the quantitative interval control system is used for accurately and quantitatively controlling a time interval and a correction interval, realizing the interval control of the whole rolling time period and realizing the small-step tension and speed control, and the sectional quantitative control can realize the optimal control of the real-time rolling condition and further realize the optimal control of the size and the surface quality of a rolled material in the rolling process; the quantitative time control system realizes the quick response of tension adjustment to the correction quantity of a 1# loop through the optimal time interval control point obtained through big data research and field repeated tests, realizes the undisturbed control and adjustment of the loop between the pre-finishing rolling frame and the pre-finishing rolling mill group, and further avoids the wave beating and steel piling in the pre-finishing rolling mill group; the comprehensive adjusting and solidifying system realizes adjustment of a 1# loop large sleeve based on optimal adjustment and optimization of on-site closed loop feedback, quickly eliminates an excess rolled piece between a middle rolling frame and a pre-finishing rolling frame, further avoids stacking a large amount of steel and bending and extruding the stacked steel, and further improves rolling smoothness and yield.

The 1# loop is a horizontal loop, the horizontal scannable and calibratable range is 700mm, the loop height of a rolled piece in the loop is scanned and detected by a loop scanner, and the loop height is converted into an analog quantity voltage signal of 0-10V by the signal and transmitted to a programmable controller and a related memory card by a shielded cable; the specific flow of the data processing and the continuous data display of the man-machine picture comprises the following steps: firstly, variable design, variable naming and variable filing are carried out on the height signals of the analog quantity, then variable grouping and program statement design are carried out, and finally, the design of a block component of an HMI (human machine interface) man-machine picture and the connection of continuous variables are carried out.

The head sleeve height is the sleeve height and the sleeve amount before the torque and the current of the upstream frame and the downstream frame reach steady-state values, the head sleeve height has regulation and control force on the rolling impact force of the upstream frame and the downstream frame, the sleeve height is set to be obtained according to the sleeve lifting height of the sleeve lifting roller and the comprehensive measurement and calculation of a parabolic curve, and the set height realizes the optimal adjustment of the tension between the two frames.

The double line mode is one of a double high line production mode; the correction is the ratio of the speed regulating quantity of the selected target stand to the highest speed, and the interval steady-state control refers to the stable control of the height of the loop in a rolling interval and is used for realizing the quantitative stable control of the loop per se, the height of the loop of an upstream stand and a downstream stand connected with the loop and the speed of the stands. By the sectional control design, the optimal control of the loop height and the rack speed can be realized.

The standard of the 1# loop head for starting the big loop is that the actual height of the loop head exceeds the set height by 150%; and pre-finish rolling is an independent rolling line unit, and the pre-finish rolling is integrally combined through a pre-finish rolling protective cover, so that the integral connection of the pre-finish rolling mill group to the 1# loop is realized.

The continuous speed and 1# loop height adjusting process refers to rolling connection and speed connection after the head is sleeved, and the process is very important for the rolling process of one piece of steel, because the process realizes the optimal connection between the head of a rolled piece and a middle steady state area after the head of the rolled piece impacts, the optimal control of quality and performance can be realized; the specific process of identifying and operating big data is as follows: and the identification data and the operation data are integrated, optimized and refined through a human-computer picture and high-speed data acquisition system, and then final operation and optimal operation solidification are realized.

Example two

According to fig. 2, the present embodiment provides a method for controlling the loop head to lift up, which includes the following steps:

the method comprises the following steps: the double-line 1# loop is arranged among 13 middle rolling stands, 2# flying shears and 14 pre-finish rolling stands, the head loop height of the 1# loop is collected by a processing and displaying system, and analog quantity conversion and storage of a programmable controller are carried out;

step two: utilizing a processing and displaying system to perform man-machine picture data processing and continuous data display on the sleeve height of the head of the 1# loop;

step three: starting an identification and tension driving system, identifying the sleeve height of the head through a central processing unit, comparing the sleeve height with a set sleeve height, and identifying and judging the 1# loop head to be enlarged according to different rolling specification sleeve height data and the set sleeve height;

step four: after the system identifies that the head of the 1# loop has a big loop, performing tension relief treatment on 6 frames, 7 frames, 8 frames, 9 frames, 10 frames, 11 frames, 12 frames and 13 frames of the middle rolling respectively; the tension eliminating treatment is that the reduction speed adjustment in the reverse rolling line direction is carried out through the speed matching relation of the middle rolling 6 frames, 7 frames, 8 frames, 9 frames, 12 frames and 13 frames, and the adjustment mode is that the speed reduction adjustment is carried out through a speed adjusting rocker of a main control table; the adjusting mode can realize precise and quantitative small-step adjustment, can realize optimal matching of speed adjustment and rolling impact, and further realizes the steel passing stability of the whole medium rolling area;

step five: starting a quantitative interval control system to control the quantitative cut-off time of the tension relief force, wherein the quantitative cut-off time of the tension relief force is when the correction amount of the 1# loop in the double-line mode reaches 5%;

step six: by a quantitative interval control system, interval steady-state control is carried out according to the correction of 5-10% in a double-line mode in the process of continuous speed and 1# loop height adjustment;

step seven: starting a quantitative time control system, and after the head of the 1# loop is identified to be 5 seconds of the large loop, performing tension processing on 14 frames, 15 frames, 16 frames and 17 frames of pre-finish rolling; the pre-finish rolling is an independent rolling line, and is specifically divided into 1-line pre-finish rolling and 2-line pre-finish rolling, wherein the 1-line pre-finish rolling is respectively provided with 14, 15, 16 and 17 lines, the 2-line pre-finish rolling is respectively provided with 14, 15, 16 and 17 lines, and the pre-finish rolling is integrally combined through a pre-finish rolling protective cover;

step eight: controlling the quantitative cut-off time of the pre-finish rolling tension to be 8% of the correction amount of the double-line mode of the 1# loop by using a quantitative time control system;

step nine: starting the comprehensive adjusting and solidifying system, performing interval steady-state control according to the correction quantity of a double-line mode reaching 6-9% in the continuous speed and 1# loop height adjusting process, and solidifying the related identification big data and operation big data of the same rolling specification to ensure that the head of the 1# loop does not have a big loop.

The invention can realize the quantitative control of the loop height of the 1# loop head through the accurate quantitative control of the 1# loop double-line mode correction quantity, further break through the production bottleneck, provide a steady state interval for the speed increase and short-time loop fluctuation in the production process, further avoid the steel piling of the 1# loop and a pre-finish rolling inlet, realize the bidirectional control of the rack speed control and the loop height control through the accurate quantitative speed control of the 1# loop upstream rack and the downstream rack, further provide a powerful support for the production smoothness, the anti-interference and the high yield in the production process, and the processing and displaying system of the invention can carry out signal acquisition, signal conversion, signal transmission and the like on the on-site loop height signal and the speed signal of the associated rolling rack, the systematic processing can realize the visualization and integration of important key signals, and can provide high-efficiency information service for main control personnel, meanwhile, the identification and tension driving system can identify and collect the tension of a middle rolling upstream rack in front of a 1# loop and a pre-finishing rolling downstream rack behind the 1# loop, and performs tension driving adjustment by combining dynamic quantitative data of correction quantity, and the adjustment mode of tension driving at two ends is innovative, so that the adjustment efficiency of the 1# loop when the loop is expanded can be greatly improved, and further powerful guarantee is provided for the adjustment efficiency and the adjustment effect in the rolling process, in addition, the quantization interval control system can realize accurate quantization control of a time interval and a correction quantity interval, and realize the inter-partition control of the whole rolling time period, the small-step tension and speed control is realized, the sectional quantitative control can optimally control the real-time rolling condition, and further can optimally control the size and the surface quality of a rolled material in the rolling process, secondly, the quantitative time control system of the invention can obtain an optimal time section control point through big data research and field repeated tests, and can realize the quick response of tension adjustment to the correction quantity of a 1# loop through the precise control of the optimal time control point, the innovative design can realize the undisturbed control and adjustment of vertical loops of a finish rolling frame and a pre-finishing rolling mill group, thereby avoiding the wave striking and steel piling in the pre-finishing rolling mill group, and finally, the comprehensive adjusting and solidifying system of the invention realizes the quick, efficient and undisturbed adjustment of a large loop of the 1# loop based on the optimization of the optimal adjustment and the field closed loop feedback, the method can quickly eliminate the excess rolled pieces between the middle rolling frame and the pre-finish rolling frame, thereby avoiding stacking a large amount of steel and bending and extruding the stacked steel, and improving the rolling smoothness and the yield.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.