CN101469355A - Bellless furnace top pressure compensation weighing method for blast furnace - Google Patents
Bellless furnace top pressure compensation weighing method for blast furnace Download PDFInfo
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- CN101469355A CN101469355A CNA2007101592590A CN200710159259A CN101469355A CN 101469355 A CN101469355 A CN 101469355A CN A2007101592590 A CNA2007101592590 A CN A2007101592590A CN 200710159259 A CN200710159259 A CN 200710159259A CN 101469355 A CN101469355 A CN 101469355A
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Abstract
The invention discloses a pressure compensation weighing method for a furnace top without a bell of a blast furnace, which relates to technology of the furnace top without the bell of the blast furnace. The method is characterized in that a weight signal and a top pressure signal are converted into standard signals through a material weight weighing system and a furnace top pressure instrument system to be sent into a PLC control processing system; the PLC control processing system removes interference through filtering calculation according to self software design, sends a measured value into a pressure compensation model for compensation calculation, performs pressure difference correction and zero-tracking correction at each operation cycle at the same time, and then outputs actual material weight after the compensation, a tank empty/full signal and a zero material flow signal; and a displaying and recording system acquires various signal values from the PLC control processing system through network communication, conveys the signal values to a material distribution control system after the calculation, displays the signal values on a screen, and records the signal values into a historical database to form a historical record at the same time. The method has the advantages that the method realizes the high-precision multi-ring burden distribution of the blast furnace, and can improve yield and reduce investment.
Description
Technical field
The present invention relates to a kind of blast furnace bell-less furnace roof technology, specifically relevant with a kind of bellless furnace top pressure compensation weighing method for blast furnace.
Background technology
At present, the bell-less blast furnace cloth mainly adopts dual mode: the one, and time polycyclic distributing, the 2nd, weight polycyclic distributing.The time polycyclic distributing is to be the distributing mode of foundation with time, exists owing to reasons such as materials variance, weight differential cause cloth inhomogeneous, and the working of a furnace is caused detrimentally affect.The weight polycyclic distributing can be dispersed in raw material in the stove equably according to the Different Weight of each batch, and the stove shape is had stabilization.
The key of weight polycyclic distributing technology is blast furnace top pressure along with the variation of production status constantly changes, this pressure to the influence that is loaded in the weighing value of raw material in the sealing furnace roof scale hooper also in continuous variation.Just must eliminate the influence of furnace top pressure if carry out the accurate weight polycyclic distributing, just pressure compensation be carried out in weighing the weight value of weighing.
There is following shortcoming in existing systems:
1, working cost height;
2, system finishes computing by hardware circuit, can not change adjustment after the operation;
3, can only export the weighing signal, not have other coherent signal.
Summary of the invention
For addressing the above problem, the invention provides and a kind ofly can improve control accuracy, improve production operation efficiency, prolong the blast-furnace production campaign, significantly reduce the bellless furnace top pressure compensation weighing method for blast furnace of investment.
For achieving the above object, the present invention is by the following technical solutions:
Bellless furnace top pressure compensation weighing method for blast furnace, it relates to the heavy Weighing system of material, furnace top pressure instrumental system, PLC control processing system, cloth control system, display record system, it is characterized in that: gather batch box raw material weight signal by the LOAD CELLS in the heavy Weighing system of material, send into the PLC control processing system after weight signal being converted to the standard signal of 4～20mA by the signal transmitting device; Simultaneously the furnace top pressure instrumental system is sent into the PLC control processing system with the furnace top pressure signal after by the standard signal of pressure unit with 4～20mA; Receive the PLC control processing system of weight and pressure signal, according to self software design process filtering calculating removal interference, observed value is sent into the pressure compensation model compensate computing, simultaneously each execution cycle carry out that differential pressure is proofreaied and correct and zero point tracking correction, the actual material after will compensate at last is heavy, the empty full signal of batch can reaches zero materials flow signal and exports.
The compensation operation method of pressure compensation model:
W＝(Wn—Wo)(1+Pn/Sn×K)
W: compensation back weight
Wn: weight measurement
Wo: claim value zero point
Pn: furnace top pressure
Sn: threaded pipe sectional area
K: adjust coefficient
Wherein, adjust the span 11-14 of COEFFICIENT K, it is finally to determine according to the furnace top pressure velocity of variation of practical situation and threaded pipe sectional area ratio.
The operator-machine-interface that display record system is made up of computer and application software, obtain various signal values by network communication from the PLC system, flow to the cloth control system as calculated and, charge to historical data base formation historic records simultaneously, in order to data are analyzed at screen display.
Compared with prior art, usefulness of the present invention is:
Native system is introduced weighing system with PLC, with software model compensation alternative hardware line build-out, the irreplaceable advantage of hardware compensating is arranged all on computational accuracy and maintenance activities; It has the advantages that operation is steady, computing velocity is fast, adapt to the industry spot Working environment, and uses the PLC system reliably to be connected with other system of communication modes and blast furnace, can accomplish error free data transmission; After adopting a kind of PLC Controlling System of blast furnace bell-less furnace top pressure compensation weighing technology, realized that the high precision of blast furnace is encircled the weight cloth more, can improve output, reduce investment.
Description of drawings
Fig. 1 is a workflow diagram of the present invention;
Fig. 2 is a furnace top pressure point distribution plan of the present invention;
Fig. 3 is a LOAD CELLS distribution plan of the present invention.
Among the figure, 1 is subjected to batch can, 2 weighing jars, 3 blast furnaces, 4 weighing tank pressure forces, 5 bottom clack box pressure spots, 6 furnace top pressures point, 7 LOAD CELLS, 8 LOAD CELLS, 9 LOAD CELLS.
Embodiment
The invention will be further described below in conjunction with accompanying drawing and embodiment:
As shown in Figure 1, bellless furnace top pressure compensation weighing method for blast furnace, it relates to the heavy Weighing system of material, furnace top pressure instrumental system, PLC control processing system, cloth control system, display record system.
Shown in Fig. 2,3, blast furnace top is provided with and is subjected to batch can 1, and the centre is provided with weighing jar 2; LOAD CELLS adopts general purpose transducer, adopts three transmitters 7,8,9, and trilateral distributes; Adopt into three pressure spots: weighing tank pressure force 4, bottom clack box pressure spot 5, furnace top pressure point 6.
Described bellless furnace top pressure compensation weighing method for blast furnace is gathered batch box raw material weight signal by the LOAD CELLS in the heavy Weighing system of material, sends into the PLC control processing system after weight signal being converted to the standard signal of 4～20mA by the signal transmitting device; Simultaneously the furnace top pressure instrumental system is sent into the PLC control processing system with the furnace top pressure signal after by the standard signal of pressure unit with 4～20mA; Receive the PLC control processing system of weight and pressure signal, according to self software design process filtering calculating removal interference, stationary value is sent into the pressure compensation model compensate computing, simultaneously each execution cycle carry out that differential pressure is proofreaied and correct and zero point tracking correction, the actual material after will compensate at last is heavy, the empty full signal of batch can reaches zero materials flow signal and exports.
The operator-machine-interface that display record system is made up of computer and application software, obtain various signal values by network communication from the PLC system, flow to the cloth control system as calculated and, charge to historical data base formation historic records simultaneously, in order to data are analyzed at screen display.
Claims (2)
1, a kind of bellless furnace top pressure compensation weighing method for blast furnace, it is characterized in that: gather batch box raw material weight signal by the LOAD CELLS in the heavy Weighing system of material, send into the PLC control processing system after converting weight signal to standard signal by the signal transmitting device; Send into the PLC control processing system after the furnace top pressure instrumental system converts the furnace top pressure signal to standard signal by pressure unit simultaneously; The PLC control processing system of receiving weight and pressure signal is through filtering removal interference, observed value is sent into the pressure compensation model compensate computing, simultaneously each execution cycle carry out that differential pressure is proofreaied and correct and zero point tracking correction, the actual material after will compensate then is heavy, the empty full signal of batch can reaches zero materials flow signal and exports; Display record system is obtained various signal values by network communication from the PLC control processing system, flows to the cloth control system after as calculated and at screen display, charges to historical data base simultaneously and form historic records.
2, bellless furnace top pressure compensation weighing method for blast furnace according to claim 1 is characterized in that: the compensation operation method of pressure compensation model: W=(Wn-and Wo) (1+Pn/Sn * K), wherein, W: compensation back weight; Wn: weight measurement; Wo: claim value zero point; Pn: furnace top pressure; Sn: threaded pipe sectional area; K: adjust coefficient, span 11-14.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200710159259 CN101469355B (en) | 2007-12-28 | 2007-12-28 | Bellless furnace top pressure compensation weighing method for blast furnace |
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| CN 200710159259 CN101469355B (en) | 2007-12-28 | 2007-12-28 | Bellless furnace top pressure compensation weighing method for blast furnace |
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| CN101469355A true CN101469355A (en) | 2009-07-01 |
| CN101469355B CN101469355B (en) | 2012-12-12 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101985669A (en) * | 2010-11-18 | 2011-03-16 | 中冶南方工程技术有限公司 | Method for automatically correcting differential-pressure compensation factors of weighing of top charging bucket |
| CN102559975A (en) * | 2012-02-28 | 2012-07-11 | 中冶南方工程技术有限公司 | Charging bucket-weighing and differential pressure-compensating system for serial-type bell-less top |
| CN102559966A (en) * | 2012-02-28 | 2012-07-11 | 中冶南方工程技术有限公司 | Charging bucket weighing differential pressure compensation method for serial bell-less furnace top |
| CN103451339A (en) * | 2013-08-27 | 2013-12-18 | 中冶南方工程技术有限公司 | Fuzzy weighing pressure difference compensation method for charging tank of serial-tank bell-less top |
| CN104388618A (en) * | 2014-12-10 | 2015-03-04 | 天俱时工程科技集团有限公司 | Gravimetric-method material distribution device for medium and small sized ironmaking blast furnaces and material distribution method of device |
| CN104444383A (en) * | 2014-12-02 | 2015-03-25 | 新奥科技发展有限公司 | High-pressure dense-phase transportation metering method and device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2069861U (en) * | 1989-12-05 | 1991-01-23 | 冶金工业部钢铁研究总院 | Weighing system for coal-blasting series tank of blast furnace |
-
2007
- 2007-12-28 CN CN 200710159259 patent/CN101469355B/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101985669A (en) * | 2010-11-18 | 2011-03-16 | 中冶南方工程技术有限公司 | Method for automatically correcting differential-pressure compensation factors of weighing of top charging bucket |
| CN101985669B (en) * | 2010-11-18 | 2012-05-23 | 中冶南方工程技术有限公司 | Method for automatically correcting differential-pressure compensation factors of weighing of top charging bucket |
| CN102559975A (en) * | 2012-02-28 | 2012-07-11 | 中冶南方工程技术有限公司 | Charging bucket-weighing and differential pressure-compensating system for serial-type bell-less top |
| CN102559966A (en) * | 2012-02-28 | 2012-07-11 | 中冶南方工程技术有限公司 | Charging bucket weighing differential pressure compensation method for serial bell-less furnace top |
| CN102559966B (en) * | 2012-02-28 | 2014-04-09 | 中冶南方工程技术有限公司 | Charging bucket weighing differential pressure compensation method for serial bell-less furnace top |
| CN103451339A (en) * | 2013-08-27 | 2013-12-18 | 中冶南方工程技术有限公司 | Fuzzy weighing pressure difference compensation method for charging tank of serial-tank bell-less top |
| CN103451339B (en) * | 2013-08-27 | 2015-01-28 | 中冶南方工程技术有限公司 | Fuzzy weighing pressure difference compensation method for charging tank of serial-tank bell-less top |
| CN104444383A (en) * | 2014-12-02 | 2015-03-25 | 新奥科技发展有限公司 | High-pressure dense-phase transportation metering method and device |
| CN104388618A (en) * | 2014-12-10 | 2015-03-04 | 天俱时工程科技集团有限公司 | Gravimetric-method material distribution device for medium and small sized ironmaking blast furnaces and material distribution method of device |
| CN104388618B (en) * | 2014-12-10 | 2017-02-22 | 天俱时工程科技集团有限公司 | Gravimetric-method material distribution device for medium and small sized ironmaking blast furnaces and material distribution method of device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101469355B (en) | 2012-12-12 |
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Owner name: DALIAN HUAYELIAN AUTOMATION CO., LTD. Free format text: FORMER OWNER: ANGANG GROUP AUTOMATIZATION COMPANTY Effective date: 20150713 |
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Effective date of registration: 20150713 Address after: 116023 Liaoning Province, Dalian City High-tech Park Qixianling Rhenish Street No. 9 Patentee after: Dalian Huayelian Automation Co., Ltd. Address before: 114009 No. 292 South Zhonghua Road, Tiedong District, Liaoning, Anshan Patentee before: Automation Company of Angang Group |