CN102331802B - System and method for controlling temperature of furnace area of annealing furnace - Google Patents
System and method for controlling temperature of furnace area of annealing furnace Download PDFInfo
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- CN102331802B CN102331802B CN 201110215395 CN201110215395A CN102331802B CN 102331802 B CN102331802 B CN 102331802B CN 201110215395 CN201110215395 CN 201110215395 CN 201110215395 A CN201110215395 A CN 201110215395A CN 102331802 B CN102331802 B CN 102331802B
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Abstract
The invention discloses a system for controlling the temperature of a furnace area of an annealing furnace, which comprises a PLC (programmable logic controller), a remote information matching system, a local information matching system and a distributed control system. The invention also discloses a method for controlling the temperature of the furnace area of the annealing furnace, which is characterized in that a preset temperature value corresponding to a formulation parameter is calculated by using the remote information matching system and the local information matching system, and then the preset temperature value is transmitted to the distributed control system. Because the local information matching system is adopted, and the temperature values are transmitted to the distributed control system by the PLC controller, the delay defects of the remote information matching system are eliminated, and through comparing the calculated preset temperature values, the precise control on the temperature values can be better guaranteed; and when the preset values are not consistent through comparison, a warning message is emitted in time so as to indicate the staff to select a preset value selected by the right information matching system, thereby facilitating the improvement on the qualified rate of products.
Description
Technical field
The invention belongs to field of steel-making, be specifically related to a kind of annealing furnace stove district's temperature control system and control method.
Background technology
When steel band is carried out cold rolled annealed processing, need carry out corresponding temperature control to annealing furnace stove district according to kind and the thickness of steel band, to guarantee the annealing quality of steel band.
Present set parameter control system, shown in Fig. 1, be provided with PLC(Programmable Logic Controller in the Lu Qu porch, programmable logic controller (PLC)) controller, be used for the new steel band information that enters the stove district is detected, comprise information such as the thickness that detects steel band, steel grade.Detection information is sent to the remote information matching system automatically, by the remote information matching system according to steel band information, find the prescription that is stored in wherein should steel band information, in prescription, store by the processing procedure slip-stick artist according to steel grade and the definite parameter of thickness, the desired temperature that the remote information matching system is come out of the stove and distinguished according to the calculation of parameter in the prescription, then setting value is passed to dcs (DCS, Distributed Control System), by dcs control field instrument, with the temperature value in the stove district that reaches setting, guarantee the annealing quality to the steel band product.
Said system can be finished the annealing temperature control to steel band preferably, but still has weak point.Since steel band information from PLC to the remote information matching system again to dcs, need the cost transmission time, for concrete product linear velocity, its adaptability is obviously not enough:
(1), when producing linear velocity when slow, the design temperature of new steel band can pass to the dcs setting value ahead of time, temperature changes ahead of time, and the annealing quality of the afterbody of a last steel band is produced harmful effect;
(2), when producing linear velocity when fast, the design temperature of the new steel band dcs setting value that can lag behind, influences the head annealing quality of next coil of strip at temperature variation time lag;
(3), needing overlap joint to sacrifice steel band between the thickness steel band sometimes uses as transition; the time-delay of transmission can make the information matches system only detect the information of sacrificing steel band; detection is less than next steel band of sacrificing steel band; this can cause the prescription of previous steel band to run back one steel band unusually; if untimely the switching will have a strong impact on the steel band annealing quality.
Summary of the invention
The object of the present invention is to provide the good annealing furnace stove district temperature control system of a kind of real-time, to improve system flexibility, guarantee product quality.
Another object of the present invention is to provide a kind of annealing furnace stove district temperature-controlled process that can in time check out system exception.
A kind of annealing furnace stove district temperature control system comprises: the PLC controller: for detection of entering stove district steel band information, comprise steel grade, thickness of strips information, and the information that detects is uploaded automatically; Remote information matching system: store the prescription corresponding with detection information, after the remote information matching system receives the detection information of being uploaded automatically by the PLC controller, search the corresponding prescription of detection information, according to the prescription in calculation of parameter come out of the stove the district desired temperature; The local information matching system: store the prescription corresponding with detection information, it receives the detection information of being uploaded by the PLC controller, searches the corresponding prescription of detection information, according to the come out of the stove desired temperature in district of the calculation of parameter in the prescription; Dcs: receive the desired temperature that is transmitted by remote information matching system and local information matching system and compare, when desired temperature is consistent, control heating apparatus according to setting value, otherwise, send warning message.
For realizing further goal of the invention of the present invention, the invention also discloses a kind of annealing furnace stove district temperature-controlled process, comprise the steps: to detect: the PLC controller detects the steel band information that enters the stove district, comprise steel grade, thickness of strips information, and the information that detects is uploaded to remote information matching system and local information matching system automatically; Coupling: remote information matching system and local information matching system are according to detecting the information searching prescription corresponding with this information; Calculate: remote information matching system and local information matching system calculate the corresponding set temperature value of this formulation parameter, are sent to dcs; Control: the temperature value that dcs receiving remote information matches system and local information matching system calculate compares, and when temperature value is consistent, is heated by desired temperature control heating apparatus, when inconsistent, sends warning message.
Adopt annealing furnace stove of the present invention district temperature control system, the PLC controller detects steel grade, the thickness information of steel band, be uploaded to remote information matching system and local information matching system, by the prescription of information matches system according to detection information searching correspondence, and calculate needed desired temperature according to formulation parameter, by dcs this desired temperature relatively, if normal, then carry out corresponding temperature control operation then.Owing to adopted the local information matching system, eliminated the transmission delay defective of remote information matching system, its real-time is good.When too fast or produce linear velocity and cross when slow for producing linear velocity, the time-delay control information of remote information matching system and the control information of local information matching system are inconsistent, system alarm prompting staff time update is controlled parameter or is controlled according to local information, can adapt to the different linear velocities of producing, adaptability is better, and has guaranteed the crudy of steel band product.
Adopt annealing furnace stove of the present invention district temperature-controlled process, after by the PLC controller steel band information being detected, be uploaded to local information matching system and remote information matching system, owing to adopt the local information matching system, be transferred to the local information matching system by the PLC controller, the local information matching system is to dcs, eliminated the time-delay defective of remote information matching system, and compare by the desired temperature that local information matching system and remote information matching system calculate, can better guarantee its accurate control, when dcs relatively and setting value occurs when inconsistent, in time send a warning, the prompting staff chooses the correct selected setting value of information matches system, is conducive to improve the qualification rate of product.
Description of drawings
Fig. 1 is prior art annealing furnace stove district temperature control system block diagram.
Fig. 2 is annealing furnace stove of the present invention district temperature control system block diagram.
Fig. 3 is annealing furnace stove of the present invention district temperature control system schematic flow sheet.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further illustrated.
As Fig. 2, annealing furnace stove of the present invention district temperature control system comprises: the PLC controller: for detection of entering stove district steel band information, comprise steel grade, thickness of strips information, and the information that detects is uploaded automatically; Remote information matching system: store the prescription corresponding with detection information, after the remote information matching system receives the detection information of being uploaded automatically by the PLC controller, search the corresponding prescription of detection information, according to the prescription in calculation of parameter come out of the stove the district desired temperature; The local information matching system: store the prescription corresponding with detection information, it receives the detection information of being uploaded by the PLC controller, searches the corresponding prescription of detection information, according to the come out of the stove desired temperature in district of the calculation of parameter in the prescription; Dcs: receive the desired temperature that is transmitted by remote information matching system and local information matching system and compare, when desired temperature is consistent, control heating apparatus according to setting value, otherwise, send warning message.
Detected by steel grade, the thickness information of PLC controller to steel band, be uploaded to remote information matching system and local information matching system, by the prescription of information matches system according to detection information searching correspondence, and calculate needed desired temperature according to formulation parameter, then by dcs this desired temperature relatively, if normal, then carry out corresponding temperature control operation.Owing to adopted the local information matching system, eliminated the transmission delay defective of remote information matching system, its real-time is good.When too fast or produce linear velocity and cross when slow for producing linear velocity, the time-delay control information of remote information matching system and the control information of local information matching system are inconsistent, system alarm prompting staff time update is controlled parameter or is controlled according to local information, can adapt to the different linear velocities of producing, adaptability is better, and has guaranteed the crudy of steel band product.
As Fig. 3, annealing furnace stove of the present invention district temperature-controlled process, comprise the steps: to detect: the PLC controller detects the steel band information that enters the stove district, comprises steel grade, thickness of strips information, and the information that detects is uploaded to remote information matching system and local information matching system automatically; Coupling: remote information matching system and local information matching system are according to detecting the information searching prescription corresponding with this information; Calculate: remote information matching system and local information matching system calculate the corresponding set temperature value of this formulation parameter, are sent to dcs; Control: the temperature value that dcs receiving remote information matches system and local information matching system calculate compares, and when temperature value is consistent, is heated by desired temperature control heating apparatus, when inconsistent, sends warning message.
After by the PLC controller steel band information being detected, be uploaded to local information matching system and remote information matching system, owing to adopt the local information matching system, be transferred to the local information matching system by the PLC controller, the local information matching system is to dcs, eliminated the time-delay defective of remote information matching system, and compare by the desired temperature that local information matching system and remote information matching system calculate, can better guarantee its accurate control, when dcs relatively and setting value occurs when inconsistent, in time send a warning, the prompting staff chooses the correct selected setting value of information matches system, is conducive to improve the qualification rate of product.
In above-mentioned annealing furnace stove district temperature-controlled process, described formulation parameter is pre-set in the prescription by the processing procedure slip-stick artist.It better guarantees the annealing effect according to the experience of the annealing purpose combination process Gongshi oneself of concrete steel grade needs.
In addition, in the control step, adopt the PID computing method to be drawn by desired temperature and respectively distinguish the temperature output valve, so that the more accurate temperature control that realizes easily annealing furnace stove district.
More than technical scheme that the embodiment of the invention is provided be described in detail, used specific case herein principle and the embodiment of the embodiment of the invention are set forth, the explanation of above embodiment only is applicable to the principle that helps to understand the embodiment of the invention; Simultaneously, for one of ordinary skill in the art, according to the embodiment of the invention, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (4)
1. an annealing furnace stove district temperature control system comprises: the PLC controller: for detection of entering stove district steel band information, comprise steel grade, thickness of strips information, and the information that detects is uploaded automatically; Remote information matching system: store the prescription corresponding with detection information, after the remote information matching system receives the detection information of being uploaded automatically by the PLC controller, search the corresponding prescription of detection information, according to the prescription in calculation of parameter come out of the stove the district desired temperature; It is characterized in that, also comprise: the local information matching system: store the prescription corresponding with detection information, it receives the detection information of being uploaded by the PLC controller, searches the corresponding prescription of detection information, according to the come out of the stove desired temperature in district of the calculation of parameter in the prescription; Dcs: receive the desired temperature that is transmitted by remote information matching system and local information matching system and compare, when desired temperature is consistent, control heating apparatus according to setting value, otherwise, send warning message.
2. annealing furnace stove district temperature-controlled process, it is characterized in that, comprise the steps: to detect: the PLC controller detects the steel band information that enters the stove district, comprises steel grade, thickness of strips information, and the information that detects is uploaded to remote information matching system and local information matching system automatically; Coupling: remote information matching system and local information matching system are according to detecting the information searching prescription corresponding with this information; Calculate: remote information matching system and local information matching system calculate the corresponding set temperature value of this formulation parameter, are sent to dcs; Control: the temperature value that dcs receiving remote information matches system and local information matching system calculate compares, and when temperature value is consistent, is heated by desired temperature control heating apparatus, when inconsistent, sends warning message.
3. according to the described annealing furnace stove of claim 2 district temperature-controlled process, it is characterized in that described formulation parameter is pre-set in the prescription by the processing procedure slip-stick artist.
4. according to claim 2 or 3 described annealing furnace stove district temperature-controlled process, it is characterized in that, in the control step, adopt the PID computing method to be drawn by desired temperature and respectively distinguish the temperature output valve.
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| CN 201110215395 CN102331802B (en) | 2011-07-29 | 2011-07-29 | System and method for controlling temperature of furnace area of annealing furnace |
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| CN 201110215395 CN102331802B (en) | 2011-07-29 | 2011-07-29 | System and method for controlling temperature of furnace area of annealing furnace |
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| CN102331802A CN102331802A (en) | 2012-01-25 |
| CN102331802B true CN102331802B (en) | 2013-09-18 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104073623B (en) * | 2013-03-30 | 2016-08-03 | 宝山钢铁股份有限公司 | A kind of roller bottom type annealing furnace temperature-controlled process |
| CN104422297A (en) * | 2013-08-22 | 2015-03-18 | 协鋐机电有限公司 | Man-machine interface system for annealing furnace |
| CN105527995A (en) * | 2014-09-29 | 2016-04-27 | 镇江石鼓文智能化系统开发有限公司 | Remote temperature control system and using method thereof |
| CN104714573A (en) * | 2015-03-13 | 2015-06-17 | 武汉钢铁(集团)公司 | Automatic temperature control method for sponge iron tunnel kiln and device thereof |
| CN105274321B (en) * | 2015-10-29 | 2017-09-01 | 重庆派斯克刀具制造股份有限公司 | The temprature control method of high-frequency heating |
| CN115796058B (en) * | 2023-02-06 | 2023-04-14 | 广州志橙半导体有限公司 | Equipment data analysis method and system of CVD equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1149082A (en) * | 1996-08-27 | 1997-05-07 | 宝山钢铁(集团)公司 | Online controlling method for continuously annealing furnace |
| CN101058847A (en) * | 2007-06-08 | 2007-10-24 | 武汉钢铁(集团)公司 | High-temperature ring annealing furnace information control system and information control center server |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005105291A (en) * | 2003-09-26 | 2005-04-21 | Jfe Steel Kk | Steel manufacturing method |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1149082A (en) * | 1996-08-27 | 1997-05-07 | 宝山钢铁(集团)公司 | Online controlling method for continuously annealing furnace |
| CN101058847A (en) * | 2007-06-08 | 2007-10-24 | 武汉钢铁(集团)公司 | High-temperature ring annealing furnace information control system and information control center server |
Non-Patent Citations (1)
| Title |
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| 赵小强，李晶.基于PC机的多点远程温度控制系统设计.《仪器仪表学报》.2008,第29卷(第4期),468-470. * |
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Address after: 510760 No. 1 Lian Guang road, Guangzhou economic and Technological Development Zone, Guangzhou, Guangdong Patentee after: Angang Lianzhong (Guangzhou) Stainless Steel Co.,Ltd. Address before: 510760 No. 1 Lian Guang road, Guangzhou economic and Technological Development Zone, Guangzhou, Guangdong Patentee before: Lianzhong Stainless Steel Corp. |
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Granted publication date: 20130918 |