CN104406678A - Online calibration method of pulverized coal bunker meter, and calibration apparatus - Google Patents
Online calibration method of pulverized coal bunker meter, and calibration apparatus Download PDFInfo
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- CN104406678A CN104406678A CN201410574846.6A CN201410574846A CN104406678A CN 104406678 A CN104406678 A CN 104406678A CN 201410574846 A CN201410574846 A CN 201410574846A CN 104406678 A CN104406678 A CN 104406678A
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- counterweight
- pulverized coal
- coal bin
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- deviation
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Abstract
The invention discloses an online calibration method of a pulverized coal bunker meter. By use of a principle that the sum of a displayed value of the meter before counterweights are added during a pulverized coal bunker work process and the weight of the counterweights should be equal to the sum of the displayed value of the meter after the counterweights are added and a coal feeding quantity during this period, the counterweights are added multiple times on the pulverized coal bunker, the drift coefficient of the meter is solved, and the meter is calibrated. The invention also discloses a calibration apparatus for realizing the method. The apparatus comprises the pulverized coal bunker, a fixing support, the counterweights and a counterweight platform. The drift coefficient is solved through adding the counterweights multiple times on the pulverized coal bunker. The method realizes online calibration, does not affect production, is simple in principle, and can accurately solve the drift coefficient.
Description
Technical field
The present invention relates to a kind of online calibration method of Pulverized Coal Bin weighing balance, the invention still further relates to a kind of caliberating device implementing this method, belong to gauging calibration field.
Background technology
In current new dry cement technology equipment, Pulverized Coal Bin not only carries the important task storing coal dust, and has the effect of metering.During middle control operation, the coal dust use amount of kiln hood, dore furnace is mostly with reference to the changing value that Pulverized Coal Bin storehouse is heavy.Use after a period of time, display data and the real data of the LOAD CELLS of Pulverized Coal Bin can produce certain difference, and analyzing reason is that the coefficient of Pulverized Coal Bin LOAD CELLS there occurs drift, and this change can operate to control in daily and cause misleading.
Summary of the invention
To weigh the problem that variable quantity and actual coal dust use amount be not inconsistent to solve Pulverized Coal Bin, invention provides a kind of online calibration method of Pulverized Coal Bin weighing balance, meanwhile, additionally providing a kind of caliberating device implementing this method.
In order to solve the technical problem, technical scheme provided by the invention is: a kind of online calibration method of Pulverized Coal Bin weighing balance, is realized by following steps:
(1) by rotor weigher claim Pulverized Coal Bin hourly to feed coal amount be Y(t/h), unit conversion is for Y*5/18(kg/s after kg/s), if the coefficient of deviation of Pulverized Coal Bin LOAD CELLS is X, X is weight actual value and the ratio of displayed value;
(2) before increasing counterweight, utilize electronic scale to claim be M for adding the weight of counterweight, record, then by balance weight hanging in Pulverized Coal Bin, after the display of Pulverized Coal Bin LOAD CELLS is stable, record used time Ts, and the displayed value of LOAD CELLS is A before recording Pulverized Coal Bin installation counterweight, after installing, displayed value is A ', according to displayed value before increase counterweight with balance weight sum should section time hello coal amount sum be equal therewith with displayed value after increase counterweight, draws equation:
A*X+M=X*A’+Y*5T/18………………………①
According to equation 1., X=(Y*5T/18-M)/(A-A '), coefficient of deviation X can be drawn, adjust LOAD CELLS according to coefficient of deviation X.
In order to make the coefficient of deviation of trying to achieve more accurate, repeatedly can repeat step (2), change the weight of adding counterweight, try to achieve coefficient of deviation Xn, then the mean value of coefficient of deviation is asked, i.e. X=(X1+X2++Xn)/n, n be natural number between 1 to 10, namely obtain sensor drift coefficient X accurately, adjust LOAD CELLS according to coefficient of deviation X.
Present invention also offers a kind of caliberating device implementing described scaling method, comprise Pulverized Coal Bin and be positioned at the more than one fixed support of Pulverized Coal Bin outside, described fixed support is hung with counterweight by jack.
In order to better suspended counterweight, described support bracket fastened number is 4, is equally spacedly fixed on the outside lower end of Pulverized Coal Bin, and is in same level.
In order to reduce the difficulty of in-site installation counterweight, described counterweight is 1/4 annular, and multiple counterweight can be assembled into ring-shaped weight or semi-circular counterweight.
In order to place counterweight, also comprise the counterweight platform of placing counterweight.
Beneficial effect of the present invention: before online calibration method of the present invention utilizes and increases counterweight, displayed value is with balance weight sum should the section time feeds coal amount sum equal principle therewith with displayed value after increase counterweight, Pulverized Coal Bin repeatedly increases counterweight, obtain the coefficient of deviation of the preparation of LOAD CELLS, thus calibration load cell, it is made to show accurately, for middle control operation provides data accurately.This scaling method is on-line operation in addition, does not affect production, raises the efficiency.The caliberating device of enforcement the method for the present invention is provided with fixed support and jack, and jack can suspended counterweight, by adding the display numerical value of counterweight and record LOAD CELLS, accurately can obtain the coefficient of deviation of LOAD CELLS.
Accompanying drawing explanation
Fig. 1 is the structural representation of caliberating device of the present invention;
Fig. 2 is structural representation when counterweight is assembled into annular in the present invention;
In figure: 1, Pulverized Coal Bin, 2, fixed support, 3, jack, 4, counterweight, 5, counterweight platform, 6, bolt.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described further and limit.
An online calibration method for Pulverized Coal Bin weighing balance, can be realized by following steps:
(1) by rotor weigher claim Pulverized Coal Bin hourly to feed coal amount be 90(t/h), unit conversion is for 25(kg/s after kg/s), if the coefficient of deviation of Pulverized Coal Bin LOAD CELLS is X, X is weight actual value and the ratio of displayed value;
(2) before increasing counterweight, utilize electronic scale to claim be 1000 kg for adding the weight of counterweight 1, record, then suspended counterweight 1 on jack, after the display of Pulverized Coal Bin LOAD CELLS is stable, record used time 60s, and the displayed value of LOAD CELLS is 10000kg before recording Pulverized Coal Bin installation counterweight, after installing, displayed value is 9600, according to displayed value before increase counterweight with balance weight sum should section time hello coal amount sum be equal therewith with displayed value after increase counterweight, draws equation:
10000*X+1000=X*9600+25*60………………………①
I.e. X1=(25*60-1000)/(10000-9600)=1.25
(3) counterweight 1 is fallen, two pieces of counterweight assemblings are formed counterweight 2 together, claim the weight of counterweight is 2000kg with rotor weigher, then be suspended on jack by counterweight 2, after the display of Pulverized Coal Bin LOAD CELLS is stable, the record used time is 120s, and the displayed value of LOAD CELLS is 9600 before recording Pulverized Coal Bin installation counterweight, after installing, displayed value is 9150, according to same principle, draws equation:
9600*X+2000=X*9150+25*120……………………②
I.e. X2=(25*120-2000)/(9600-9150)=1.11
(4) repeat step 3, change the weight of counterweight, try to achieve coefficient of deviation X3=1.2, then the mean value of coefficient of deviation is asked, i.e. X=(1.25+1.1+1.2)/3=1.18, namely obtains sensor drift coefficient X accurately and equals 1.18, demarcate adjustment LOAD CELLS according to coefficient of deviation X.
As shown in Figure 1, a kind of caliberating device implementing above-mentioned scaling method, comprises the fixed support 2 that Pulverized Coal Bin 1 and 4 are positioned at outside, Pulverized Coal Bin 1 lower end, the equally spaced outside lower end being positioned at Pulverized Coal Bin 1 of described fixed support 2, and is positioned in same level.Fixed support 2 is provided with the opening hanging jack 3, and jack 3 one end is suspended on the opening of fixed support 2, other end suspended counterweight 4, and described counterweight 4 lower end is provided with a counterweight platform 5.Counterweight 4 is placed in counterweight platform 5 at ordinary times, when this device is started working, just counterweight 4 is suspended on jack 3.
In the present embodiment, described counterweight 4 is 1/4 annular, and two counterweights 4 can connect into a semi-circular counterweight by bolt 6, and 4 counterweights 4 connect into a ring-shaped weight by bolt 6, as shown in Figure 2.The assembling of counterweight 4 burst decreases field erected difficulty.
Claims (6)
1. an online calibration method for Pulverized Coal Bin weighing balance, be is characterized in that: realized by following steps:
(1) by rotor weigher claim Pulverized Coal Bin hourly to feed coal amount be Y(t/h), unit conversion is for Y*5/18(kg/s after kg/s), if the coefficient of deviation of Pulverized Coal Bin LOAD CELLS is X, X is weight actual value and the ratio of displayed value;
(2) before increasing counterweight, utilize electronic scale to claim be M for adding the weight of counterweight, record, then by balance weight hanging in Pulverized Coal Bin, after the display of Pulverized Coal Bin LOAD CELLS is stable, record used time Ts, and the displayed value of LOAD CELLS is A before recording Pulverized Coal Bin installation counterweight, after installing, displayed value is A ', according to displayed value before increase counterweight with balance weight sum should section time hello coal amount sum be equal therewith with displayed value after increase counterweight, draws equation:
A*X+M=X*A’+Y*5T/18………………………①
According to equation 1., X=(Y*5T/18-M)/(A-A '), coefficient of deviation X can be drawn, adjust LOAD CELLS according to coefficient of deviation X.
2. the online calibration method of Pulverized Coal Bin weighing balance according to claim 1, it is characterized in that: repeat step (2), change the weight of adding counterweight, try to achieve coefficient of deviation Xn, then the mean value of coefficient of deviation is asked, i.e. X=(X1+X2++Xn)/n, n be natural number between 1 to 10, namely obtain sensor drift coefficient X accurately, adjust LOAD CELLS according to coefficient of deviation X.
3. one kind implements the claims the caliberating device of method described in 1, it is characterized in that: comprise Pulverized Coal Bin (1) and be positioned at the outside more than one fixed support (2) of Pulverized Coal Bin (1), described fixed support (2) is hung with counterweight (4) by jack (3).
4. caliberating device according to claim 3, is characterized in that: the number of described fixed support (2) is 4, is equally spacedly fixed on Pulverized Coal Bin (1) outside lower end, and is in same level.
5. caliberating device according to claim 3, is characterized in that: described counterweight (4) is 1/4 annular, and multiple counterweight (4) can be assembled into ring-shaped weight or semi-circular counterweight.
6. the caliberating device according to claim 3 or 5, is characterized in that: also comprise the counterweight platform (5) of placing counterweight (4).
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| CN201410574846.6A CN104406678A (en) | 2014-10-25 | 2014-10-25 | Online calibration method of pulverized coal bunker meter, and calibration apparatus |
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| CN201410574846.6A CN104406678A (en) | 2014-10-25 | 2014-10-25 | Online calibration method of pulverized coal bunker meter, and calibration apparatus |
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| CN104406678A true CN104406678A (en) | 2015-03-11 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109668615A (en) * | 2017-10-16 | 2019-04-23 | 宁波柯力传感科技股份有限公司 | The Intelligent Calibration method of batch can weighing system |
| CN111366229A (en) * | 2019-09-20 | 2020-07-03 | 沈忠东 | Method for recalibrating metering equipment by buffer bin |
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| CN102169011A (en) * | 2010-12-31 | 2011-08-31 | 上海发电设备成套设计研究院 | Method of hanging weight calibration and error automatic correction for increasing metering precision of electric weighing coal feeder |
| CN102654417A (en) * | 2012-04-28 | 2012-09-05 | 宝钢集团新疆八一钢铁有限公司 | Device and method for verifying foundation pit-free coal tower scale |
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2014
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2004198176A (en) * | 2002-12-17 | 2004-07-15 | Yazaki Corp | Calibration support method, calibration support device, and calibration support system |
| CN101650215A (en) * | 2008-08-11 | 2010-02-17 | 梅特勒-托利多仪器（上海）有限公司 | Method for calibrating measuring range of electronic balance |
| CN102140371A (en) * | 2010-12-11 | 2011-08-03 | 水煤浆气化及煤化工国家工程研究中心 | Pulverized coal gasification device capable of measuring feeding quantity and performing on-line calibration of solid mass flow meter and on-line calibration method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109668615A (en) * | 2017-10-16 | 2019-04-23 | 宁波柯力传感科技股份有限公司 | The Intelligent Calibration method of batch can weighing system |
| CN111366229A (en) * | 2019-09-20 | 2020-07-03 | 沈忠东 | Method for recalibrating metering equipment by buffer bin |
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Effective date of abandoning: 20170419 |