CN100458622C - Automatic control device and method for liquid level of tundish - Google Patents
Automatic control device and method for liquid level of tundish Download PDFInfo
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- CN100458622C CN100458622C CNB2007100672189A CN200710067218A CN100458622C CN 100458622 C CN100458622 C CN 100458622C CN B2007100672189 A CNB2007100672189 A CN B2007100672189A CN 200710067218 A CN200710067218 A CN 200710067218A CN 100458622 C CN100458622 C CN 100458622C
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The invention relates to the metallurgical industry field, designed to provide a package liquid level automatic control device and method. The device includes the weighing sensor, the industrial control computer, the programmable logic controller, the control relay, the operation button box, and the intake valve control relay; the industrial control computer, the programmable logic controller, the control relay and the operation button box are linked serially; the programmable logic controllers and the control relay respectively connect with the intake valve control relay; the weighing sensor connects with the industrial control computer; the method includes the following steps: (a) using the weighing sensor to obtain the quality of the middle package steel liquid; (2) uploading the information and signal; (3) the industrial control computer information and signal, to analyze and calculate them; (4) issuing the control instructions to achieve automatic control. The invention is accurate, stable, effective and rapid; system installation, demolition, transportation and maintenance are more convenient, and easy to master by the operators.
Description
Technical field
The present invention relates to metallurgical industry field, in particular, relate to a kind of middle bag liquid level automatic control device towards continuous casting.
Background technology
In the smelting process of molten steel, the impurity in oxygenant and the molten steel mixes formation liquid slag, and its proportion is lighter, floats on molten steel top.In the molten steel casting later stage, slag flows into tundish gradually, influences steel quality, when serious even continuous casting of molten steel can't be carried out.In order to improve steel quality, improve the molten steel recovery rate, slag pick-up unit under the molten steel must be installed accurately and effectively.
Current technology about slag detection down is a lot, as electromagnetic method, supercritical ultrasonics technology, infra-red method and vibration detection method etc.Wherein vibration detection method cost is low, easy for installation, and serviceable life is longer, and application promise in clinical practice is arranged.But because the vibration source of continuous casting of molten steel workshop field condition is a lot of and environment is abominable, this detects to vibratory drilling method and has brought very big difficulty.Therefore, develop a kind of guarantee the vibration detection method can be accurately, the device of efficient realization is necessary.
Summary of the invention
Fundamental purpose of the present invention is to overcome deficiency of the prior art, and a kind of middle bag liquid level automatic control device is provided.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions.
The bag liquid level automatic control device comprises LOAD CELLS, industrial control computer, programmable logic controller (PLC), pilot relay, operating button box and mouth of a river valve pilot relay in a kind of; Industrial control computer, programmable logic controller (PLC), pilot relay and operating button box link to each other successively; Programmable logic controller (PLC) links to each other with mouth of a river valve pilot relay respectively with pilot relay; LOAD CELLS links to each other with industrial control computer;
Described LOAD CELLS can adapt to the rugged surroundings at continuous casting scene, the real-time collection of bag weight signal in being responsible for through anti-interference, high temperature resistance protection design;
Described industrial control computer is responsible for pre-service, calculating, analysis to the LOAD CELLS acquired signal, and user interface is provided simultaneously, realizes the control and the conversion of the various duties of control device;
Described programmable logic controller (PLC) is the core component of this control device, is responsible for uploading and assigning of various control signals, the startup of the automatic control function of realization control device/stop, and the control of peripheral execution member;
One group of auxiliary contact of described pilot relay are directly controlled mouth of a river valve pilot relay, another group auxiliary contact connect programmable logic controller (PLC), pass to programmable logic controller (PLC) manually having moved mouth of a river signal, programmable logic controller (PLC) then can stop automatic control at any time;
Described operating button box provides switch mouth of a river signal, delivers in the described pilot relay, carries out relevant control operation;
Described mouth of a river valve pilot relay receives the signal from programmable logic controller (PLC) and pilot relay, by the switching and the aperture at the hydraulic valve control mouth of a river.
As a kind of improvement, described industrial control computer comprises system control module, information acquisition and processing module, image display module and system parameter setting module;
Described system control module is responsible for that target device is selected, control device starts/stops and the basic function of the setting of mode of operation;
Described signals collecting and processing module are responsible for the various information accepting to upload, analyze and computing;
Described image display module intuitively shows the analysis result of information acquisition and processing module that the user calls corresponding api function by user interface and assigns execution command;
Described system parameter setting module is responsible for the setting of each operational factor of control device and technical parameter, satisfies varying environment, requirements of different users.
A kind of middle bag liquid level autocontrol method based on middle bag liquid level automatic control device may further comprise the steps:
(1) utilize LOAD CELLS to obtain the quality of molten steel in the tundish;
(2) the quality information Collaborative Control signal with molten steel is uploaded to industrial control computer;
(3) industrial control computer is accepted the quality information and the control signal of molten steel, and industrial control computer compares the quality information of molten steel and pre-set steel quality desired value, and it is carried out analytical calculation;
(4) after analytical calculation finished, industrial control computer was assigned the control corresponding instruction, realized the automatic control of centering bag liquid level.
Compared with prior art, the invention has the beneficial effects as follows:
The tundish liquid steel level can be controlled within the scope of requirement, guarantee the accuracy that vibration signal detects; Utilize programmable logic controller (PLC) to control, stable, effective and quick; This system's installation, dismounting, transportation and maintenance are comparatively convenient, can be optimized combination according to different user's needs, possess friendly man-machine interface, easy operating personnel grasp.
Description of drawings
Fig. 1 is system realization scheme figure.
Fig. 2 is that hardware system is formed structure and control information interaction figure.
Fig. 3 is the system controlling software process flow diagram.
Embodiment
In conjunction with the accompanying drawings, the present invention is described in detail below.
The bag liquid level automatic control device comprises LOAD CELLS, industrial control computer, programmable logic controller (PLC), pilot relay, operating button box and mouth of a river valve pilot relay in a kind of, and it is arranged with line and sees accompanying drawing 2.Industrial control computer, programmable logic controller (PLC), pilot relay and operating button box link to each other successively; Programmable logic controller (PLC) links to each other with mouth of a river valve pilot relay respectively with pilot relay; LOAD CELLS links to each other with industrial control computer.
Industrial control computer also comprises system control module, information acquisition and processing module, image display module and system parameter setting module; System control module is responsible for that target device is selected, the basic functions such as setting of system start-up/stop and mode of operation; Signals collecting and processing module are responsible for the various information accepting to upload, analyze and computing; Image display module intuitively shows the analysis result of data acquisition and processing module that the user can call corresponding api function by graphical user interface and assign execution command; The systematic parameter module is responsible for the setting of each technical parameter of system, satisfies varying environment, requirements of different users.
A kind of middle bag liquid level autocontrol method based on middle bag liquid level automatic control device, its software control flow process may further comprise the steps (seeing accompanying drawing 3):
(1) utilize LOAD CELLS to obtain the quality of molten steel in the tundish;
(2) the quality information Collaborative Control signal with molten steel is uploaded to industrial control computer;
(3) industrial control computer is accepted the quality information and the control signal of molten steel, and industrial control computer compares the quality information of molten steel and pre-set steel quality desired value, and it is carried out analytical calculation;
(4) after analytical calculation finished, industrial control computer was assigned the control corresponding instruction, realized the automatic control of centering bag liquid level.
Specific implementation process is as follows: the switch mouth of a river signal of operating button box, deliver in the pilot relay in the bag level control box, one group of auxiliary contact of pilot relay are directly controlled mouth of a river valve pilot relay, another group auxiliary contact are given Programmable Logic Controller, pass to Programmable Logic Controller manually having moved mouth of a river signal, Programmable Logic Controller then can stop automatic control at any time.Simultaneously between Programmable Logic Controller and the industrial computer signal transmission is arranged also, industrial computer when detecting big bag weight and be higher than desired value, the automatic control of bag liquid level in will forbidding, only when Da Bao weighed less than desired value, automatic button was just available.
At last, it is also to be noted that what more than enumerate only is a specific embodiment of the present invention.Obviously, the invention is not restricted to above embodiment, many distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention all should be thought protection scope of the present invention.
Claims (2)
1, a kind of middle bag liquid level automatic control device is characterized in that, comprises LOAD CELLS, industrial control computer, programmable logic controller (PLC), pilot relay, operating button box and mouth of a river valve pilot relay; Industrial control computer, programmable logic controller (PLC), pilot relay and operating button box link to each other successively; Programmable logic controller (PLC) links to each other with mouth of a river valve pilot relay respectively with pilot relay; LOAD CELLS links to each other with industrial control computer;
Described LOAD CELLS can adapt to the rugged surroundings at continuous casting scene, the real-time collection of bag weight signal in being responsible for through anti-interference, high temperature resistance protection design;
Described industrial control computer is responsible for pre-service, calculating, analysis to the LOAD CELLS acquired signal, and user interface is provided simultaneously, realizes the control and the conversion of the various duties of control device;
Described programmable logic controller (PLC) is the core component of this control device, is responsible for uploading and assigning of various control signals, the startup of the automatic control function of realization control device/stop, and the control of peripheral execution member;
One group of auxiliary contact of described pilot relay are directly controlled mouth of a river valve pilot relay, another group auxiliary contact connect programmable logic controller (PLC), pass to programmable logic controller (PLC) manually having moved mouth of a river signal, programmable logic controller (PLC) then can stop automatic control at any time;
Described operating button box provides switch mouth of a river signal, delivers in the described pilot relay, carries out relevant control operation;
Described mouth of a river valve pilot relay receives the signal from programmable logic controller (PLC) and pilot relay, by the switching and the aperture at the hydraulic valve control mouth of a river.
2, a kind of middle bag liquid level automatic control device according to claim 1 is characterized in that described industrial control computer comprises system control module, information acquisition and processing module, image display module and system parameter setting module;
Described system control module is responsible for that target device is selected, control device starts/stops and the basic function of the setting of mode of operation;
Described signals collecting and processing module are responsible for the various information accepting to upload, analyze and computing;
Described image display module intuitively shows the analysis result of information acquisition and processing module that the user calls corresponding api function by user interface and assigns execution command;
Described system parameter setting module is responsible for the setting of each operational factor of control device and technical parameter, satisfies varying environment, requirements of different users.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100672189A CN100458622C (en) | 2007-02-08 | 2007-02-08 | Automatic control device and method for liquid level of tundish |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100672189A CN100458622C (en) | 2007-02-08 | 2007-02-08 | Automatic control device and method for liquid level of tundish |
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| Publication Number | Publication Date |
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| CN101013322A CN101013322A (en) | 2007-08-08 |
| CN100458622C true CN100458622C (en) | 2009-02-04 |
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| CNB2007100672189A Expired - Fee Related CN100458622C (en) | 2007-02-08 | 2007-02-08 | Automatic control device and method for liquid level of tundish |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101658926B (en) * | 2009-10-13 | 2011-04-06 | 新兴铸管股份有限公司 | Hydraulic control system of tundish water gap of continuous casting machine |
| CN103744442A (en) * | 2014-01-15 | 2014-04-23 | 上海电缆研究所 | Automatic liquid level control system for continuous casting machine section and control method thereof |
| CN103962516A (en) * | 2014-05-07 | 2014-08-06 | 马钢(集团)控股有限公司 | Steel ladle roughing slag detection system and method |
| CN105057609B (en) * | 2015-09-22 | 2017-11-14 | 武汉钢铁有限公司 | The control method of Baogang's water level in continuous casting |
| CN105974899A (en) * | 2016-06-12 | 2016-09-28 | 江门谦信化工发展有限公司 | Automatic control system for adding sulfuric acid catalyst in esterification reaction and using method thereof |
| CN106141125A (en) * | 2016-08-02 | 2016-11-23 | 浙江铁狮高温材料有限公司 | Tundish freight weight limit detection device |
| TW201832900A (en) * | 2016-12-01 | 2018-09-16 | 日商新東工業股份有限公司 | Information display system for casting facility |
| CN112276070A (en) * | 2020-10-16 | 2021-01-29 | 联峰钢铁（张家港）有限公司 | Automatic tundish weight regulating and controlling method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01170569A (en) * | 1987-12-24 | 1989-07-05 | Kawasaki Steel Corp | Method for controlling automatic casting in continuous casting |
| JPH07232242A (en) * | 1994-02-24 | 1995-09-05 | Hitachi Zosen Corp | Casting method in twin roll type continuous casting equipment |
| CN2528563Y (en) * | 2002-03-22 | 2003-01-01 | 石家庄钢铁有限责任公司 | Automatic monitoring device for pouring basket liquid level |
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2007
- 2007-02-08 CN CNB2007100672189A patent/CN100458622C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01170569A (en) * | 1987-12-24 | 1989-07-05 | Kawasaki Steel Corp | Method for controlling automatic casting in continuous casting |
| JPH07232242A (en) * | 1994-02-24 | 1995-09-05 | Hitachi Zosen Corp | Casting method in twin roll type continuous casting equipment |
| CN2528563Y (en) * | 2002-03-22 | 2003-01-01 | 石家庄钢铁有限责任公司 | Automatic monitoring device for pouring basket liquid level |
Non-Patent Citations (2)
| Title |
|---|
| 方坯连铸结晶器液位控制系统. 宋东飞.冶金动力，第5期. 2004 |
| 方坯连铸结晶器液位控制系统. 宋东飞.冶金动力，第5期. 2004 * |
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Application publication date: 20070808 Assignee: Hangzhou Pucheng Taidi Industrial Co., Ltd. Assignor: Zhejiang University Contract record no.: 2010330000146 Denomination of invention: Automatic control device and method for liquid level of tundish Granted publication date: 20090204 License type: Exclusive License Record date: 20100224 |
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Granted publication date: 20090204 Termination date: 20110208 |