CN102703633A - Furnace top stock-level detection system for blast furnace - Google Patents
Furnace top stock-level detection system for blast furnace Download PDFInfo
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- CN102703633A CN102703633A CN2012101834463A CN201210183446A CN102703633A CN 102703633 A CN102703633 A CN 102703633A CN 2012101834463 A CN2012101834463 A CN 2012101834463A CN 201210183446 A CN201210183446 A CN 201210183446A CN 102703633 A CN102703633 A CN 102703633A
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- stock rod
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Abstract
The invention discloses a furnace top stock-level detection system for a blast furnace, which includes an absolute value coder data acquisition module, a chain wheel complete rotation round record module, a scale factor K computation module, a stock rod height calculation module and a stock height output module. When a stock rod designed range stockline and a 0 meter stockline of the master controller are determined, the absolute value coder data acquisition module respectively records readings on absolute value coders at that time, and the chain wheel complete rotation round record module records the complete rotation round number of a chain wheel during the descending process of a counter weight; then the scale factor is calculated; and finally, the actual height values of the stock rod can be calculated and output in real time in every period. The system disclosed by the invention solves the problems that the present blast furnace stock rod system is complicated and time-consuming in the zero calibration process and further affects the production.
Description
Technical field
The present invention relates to the blast furnace furnace top system, particularly a kind of State of Blast Furnace liftout position detector system.
Background technology
Stock rod is the critical facility of blast furnace furnace roof and feeding system; Undertaking the task of surveying interior charge level height of blast furnace and distribution situation aborning; It is the foundation of judging high furnace interior material combusting progress; For automatic charge control provides foundation, therefore efficient, the safe operation to whole blast furnace system plays an important role simultaneously.But there is following problem in present blast furnace probing rod system.(1) because the reading and the t.a. of stock rod absolute value encoder are complete proportional corresponding relationship; Zero point correction is relatively more difficult during debugging; The calibration process trouble; (2) stock rod detected value after operation after a while tends to produce deviation, and zero rice stockline position of stock rod is increasing apart from meeting with actual zero rice stockline potential difference.Then may have a strong impact on the ordinary production of blast furnace as stock rod not being calibrated zero point this moment.(3) in the blast furnace production process, the chain of weight can often come off and more renew weight, must reset absolute value encoder and carry out zero point correction behind the replacing weight, and process trouble and consuming time more influences ordinary production.These problems in view of existing method are necessary to improve targetedly, to improve efficient and the quality that blast furnace is produced.
Summary of the invention
The purpose of this invention is to provide a kind of State of Blast Furnace liftout position detector system, use this system can be easy State of Blast Furnace liftout position is measured, and solve zero point correction process problem numerous and diverse and consuming time in the present blast furnace probing rod debug process.
The technical scheme that the present invention adopted is: a kind of State of Blast Furnace liftout position detector system comprises:
(1) absolute value encoder data acquisition module is used to write down the reading a of weight absolute value encoder when the dividing point of 0m stockline position and stock rod design range H stockline
1With a2;
(2) the whole number of turns logging modle of the rotation of sprocket wheel: be used to write down weight designs the rotation of range H stockline decline process middle sprocket from 0m stockline position to stock rod whole number of turns n;
(3) scale-up factor K computing module: be used for reading a according to stock rod design range, absolute value encoder
1,a
2, sprocket wheel the whole number of turns n of rotation, the figure place m of absolute value encoder resolving power calculates scale-up factor K
(ⅱ)；
(4) stock rod high computational module: be used to calculate stock rod height actual value, time cycle of every mistake, upgrade stock rod height actual value one time
Wherein, Stock rod height value for a last time cycle;
reading during end cycle that is absolute value encoder in the current time;
is the reading of absolute value encoder when the current time, the cycle began; The selection of time cycle duration need be satisfied in the time cycle, and the rotation of absolute value encoder is no more than half cycle;
(5) stock rod height output module: be used to export measured stock rod height.
Further, this system also comprises: the zero adjustment module: be used for stock rod is transferred to the 0m stockline, carry to more than the 0m stockline on more afterwards, when the corresponding limit signal of master controller grows out of nothing in a flash, automatically with current stock rod height actual value L
1Set becomes 0m.
The invention has the beneficial effects as follows: the method that (1) the application of the invention provides, can cancel and need this step of zero point correction in the stock rod debug process, simplified debugging step, practiced thrift the manpower and materials cost.Particularly after weight or absolute value encoder replacing, can both the quick and accurate debugging calibrate scrambler.(2) stock rod detected value after operation after a while tends to produce deviation, and zero rice stockline position of stock rod is increasing apart from meeting with actual zero rice stockline potential difference.Past wants this deviation workload of adjustment bigger, even can influence production.Through zero adjustment step provided by the invention, can calibrate automatically, can calibrate at any time in process of production, guarantee the accurate and consistent of all stock rod take off data.
Description of drawings
Fig. 1 is that the hardware system of one embodiment of the invention is formed structure iron.
Fig. 2 is the State of Blast Furnace liftout position detector system structure iron of one embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is described further.
Fig. 1 is that the hardware system of one embodiment of the invention is formed structure iron; System is made up of PLC unit, master controller, frequency transformer, motor, sprocket wheel, weight, incremental encoder and absolute value encoder, and the PLC unit receives the signal of master controller and absolute value encoder; Frequency transformer links to each other with motor with the PLC unit, and incremental encoder links to each other with motor with frequency transformer; Motor is connected with sprocket wheel, drives the positive and negative rotation of sprocket wheel, and absolute value encoder is connected with sprocket wheel.
It is that maximum range is the stock rod of 6m that this embodiment is chosen stock rod, and absolute value encoder is 16 single-ring encoders.
Said PLC unit receives 0m and the digital quantity signal of 6m stockline position and 16 analog signalses that absolute value encoder sends that transmit from on-the-spot master controller.Carry out data and, continue to provide the stockline height that is detected according to the inventive method then in line computation.
Said master controller is on-the-spot mechanical contact signal, can send the digital quantity signal of 0m and 6m stockline position to the PLC unit.
Said frequency transformer is the equipment of control motor positive and inverse and speed.
Said motor is for driving the positive and negative rotation of sprocket wheel.
Said sprocket wheel is for controlling the lifting and the decline of weight through the positive and negative rotation of self.
Said incremental encoder has formed the velocity feedback in the closed loop control system for the velocity of rotation with motor feeds back in the frequency transformer.
Said absolute value encoder is used to write down the change information of sprocket wheel institute rotational angle, because the variable quantity of the variable quantity of sprocket wheel angle and stock rod height is proportional, the sprocket wheel angle is changed into 16 analog signals (0 ~ 65535), sends the PLC unit to.
Fig. 2 has provided the State of Blast Furnace liftout position detection method schema of one embodiment of the invention.
A kind of State of Blast Furnace liftout position detector system comprises:
(1) absolute value encoder data acquisition module is used to write down the reading a of weight absolute value encoder when the dividing point of 0m stockline position and stock rod design range H stockline
1With a2;
(2) the whole number of turns logging modle of the rotation of sprocket wheel: be used to write down weight designs the rotation of range H stockline decline process middle sprocket from 0m stockline position to stock rod whole number of turns n; The whole number of turns of the rotation of sprocket wheel can be by manual record and typing;
(3) scale-up factor K computing module: be used for reading a according to stock rod design range, absolute value encoder
1,a
2, sprocket wheel the whole number of turns n of rotation, the figure place m of absolute value encoder resolving power calculates scale-up factor K
?(ⅱ)；
(4) stock rod high computational module: be used to calculate stock rod height actual value, time cycle of every mistake, upgrade stock rod height actual value one time
In the formula: L
1Be actual now stock rod height value, L
0Being the stock rod height value of a last scanning period, is the difference of stock rod height in the scanning period.
and
be respectively scrambler after a scanning period with before reading;, K is a scale-up factor.What pay particular attention to is, when we selected the scanning period, (as surpassing that half cycle then can be defaulted as was oppositely to go to this position, because a must to guarantee rotation at this cycle inner encoder to be no more than half cycle
DifferenceData area can only be between-32768 to 32767).Simultaneously with
Data type essential consistent with the signal data type of absolute value encoder, all be the INT type, according to 16 binary data rule calculating, no matter could guarantee like this at what starting position a of calculating at every turn
DifferenceIt all is the actual position of rotation difference of scrambler.In the program of PLC, we can select 100ms as a scanning period, and then the every 100ms of stock rod height actual value upgrades once, enough satisfies the demand of practical application;
(5) stock rod height output module: be used to export measured stock rod height;
(6) zero adjustment module: be used for stock rod is transferred to the 0m stockline, carry to more than the 0m stockline on more afterwards, when the corresponding limit signal of master controller grows out of nothing in a flash, automatically with current stock rod height actual value L
1Set becomes 0m.
When for the first time using stock rod, weight to change to finish maybe need calibrate the time, at first stock rod is transferred to the 0m stockline, carry to more than the 0m stockline on more afterwards, when the corresponding limit signal of master controller grows out of nothing in a flash, program can be automatically with computed altitude L
1Set becomes 0m.No matter this moment, the scrambler reading how, computed altitude is all consistent with the stock rod t.a., and system continues to calculate with stock rod high computational module afterwards, and computed altitude and t.a. after can guaranteeing are consistent fully.
Through said system, realized detection to the furnace top system material level.If need after the ordinary production to recalibrate, change weight or change absolute value encoder, only need use the zero adjustment module to calibrate and get final product.Avoided fully calibrating wasting time and energy of scrambler in the ordinary method, improved efficient and quality that blast furnace is produced.
Claims (2)
1. State of Blast Furnace liftout position detector system is characterized in that: comprising:
(1) absolute value encoder data acquisition module is used to write down the reading a of weight absolute value encoder when the dividing point of 0m stockline position and stock rod design range H stockline
1With a
2
(2) the whole number of turns logging modle of sprocket wheel rotation: be used to write down weight designs the rotation of range H stockline decline process middle sprocket from 0m stockline position to stock rod whole number of turns n;
(3) scale-up factor K computing module: be used for reading a according to stock rod design range, absolute value encoder
1,a
2, sprocket wheel the whole number of turns n of rotation, the figure place m of absolute value encoder resolving power calculates scale-up factor K
?(ⅱ)；
(4) stock rod high computational module: be used to calculate stock rod height actual value; Time cycle of every mistake, upgrade a stock rod height actual value
Wherein,
was the stock rod height value of a last time cycle;
reading during end cycle that is absolute value encoder in the current time;
is the reading of absolute value encoder when the current time, the cycle began; The selection of time cycle duration need be satisfied in the time cycle, and the rotation of absolute value encoder is no more than half cycle;
(5) stock rod height output module: be used to export measured stock rod height.
2. State of Blast Furnace liftout position detector system according to claim 1; It is characterized in that: this system also comprises: the zero adjustment module: be used for stock rod is transferred to the 0m stockline; Carry to more than the 0m stockline on more afterwards; When the corresponding limit signal of master controller grows out of nothing in a flash, automatically with current stock rod height actual value L
1Set becomes 0m.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101834463A CN102703633A (en) | 2012-06-06 | 2012-06-06 | Furnace top stock-level detection system for blast furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101834463A CN102703633A (en) | 2012-06-06 | 2012-06-06 | Furnace top stock-level detection system for blast furnace |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103175414A (en) * | 2013-04-07 | 2013-06-26 | 中冶东方工程技术有限公司 | Stroke control device for skip car or gauge rod and operating method thereof |
| CN104451011A (en) * | 2014-10-24 | 2015-03-25 | 江苏恒创软件有限公司 | Method and device for computing real-time stockline of blast furnace |
| CN105177208A (en) * | 2015-10-10 | 2015-12-23 | 首钢水城钢铁（集团）有限责任公司 | Quick online positioning method for blast furnace stock rod |
| CN107058661A (en) * | 2017-03-07 | 2017-08-18 | 宁波钢铁有限公司 | A kind of blast furnace stock rod control method |
| CN112015131A (en) * | 2020-07-14 | 2020-12-01 | 唐山不锈钢有限责任公司 | Automatic positioning control system and control method for steel-making scrap steel platform car |
| CN114136355A (en) * | 2021-11-13 | 2022-03-04 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Method for quickly correcting stroke control encoder of blast furnace main coil car |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201068459Y (en) * | 2007-02-15 | 2008-06-04 | 天津市普辰电子工程有限公司 | Blast furnace material level height detection device |
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2012
- 2012-06-06 CN CN2012101834463A patent/CN102703633A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201068459Y (en) * | 2007-02-15 | 2008-06-04 | 天津市普辰电子工程有限公司 | Blast furnace material level height detection device |
Non-Patent Citations (1)
| Title |
|---|
| 罗刚等: "绝对值编码器在高炉炉顶设备中的应用", 《一重技术》, no. 1, 29 February 2012 (2012-02-29), pages 50 - 53 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103175414A (en) * | 2013-04-07 | 2013-06-26 | 中冶东方工程技术有限公司 | Stroke control device for skip car or gauge rod and operating method thereof |
| CN104451011A (en) * | 2014-10-24 | 2015-03-25 | 江苏恒创软件有限公司 | Method and device for computing real-time stockline of blast furnace |
| CN105177208A (en) * | 2015-10-10 | 2015-12-23 | 首钢水城钢铁（集团）有限责任公司 | Quick online positioning method for blast furnace stock rod |
| CN107058661A (en) * | 2017-03-07 | 2017-08-18 | 宁波钢铁有限公司 | A kind of blast furnace stock rod control method |
| CN112015131A (en) * | 2020-07-14 | 2020-12-01 | 唐山不锈钢有限责任公司 | Automatic positioning control system and control method for steel-making scrap steel platform car |
| CN112015131B (en) * | 2020-07-14 | 2021-12-03 | 唐山不锈钢有限责任公司 | Automatic positioning control system and control method for steel-making scrap steel platform car |
| CN114136355A (en) * | 2021-11-13 | 2022-03-04 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Method for quickly correcting stroke control encoder of blast furnace main coil car |
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Application publication date: 20121003 |