CN106323426A - A continuous casting crystallizer online argon blowing flow meter measuring precision correction device and correction method - Google Patents
A continuous casting crystallizer online argon blowing flow meter measuring precision correction device and correction method Download PDFInfo
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- CN106323426A CN106323426A CN201510371733.0A CN201510371733A CN106323426A CN 106323426 A CN106323426 A CN 106323426A CN 201510371733 A CN201510371733 A CN 201510371733A CN 106323426 A CN106323426 A CN 106323426A
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- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 title claims abstract description 92
- 238000012937 correction Methods 0.000 title claims abstract description 48
- 229910052786 argon Inorganic materials 0.000 title claims abstract description 46
- 238000007664 blowing Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims description 30
- 238000009749 continuous casting Methods 0.000 title abstract description 11
- 238000005259 measurement Methods 0.000 claims abstract description 17
- 238000001514 detection method Methods 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 230000001276 controlling effect Effects 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 description 11
- 239000010959 steel Substances 0.000 description 11
- 230000007547 defect Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 235000011158 Prunus mume Nutrition 0.000 description 2
- 244000018795 Prunus mume Species 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention provides a continuous casting crystallizer online argon blowing flow meter measuring precision correction device comprising a box body; the box body is provided with a handle; a voltage-stabilized power source (6), a mass flow rate adjusting valve (1) and a mass flow meter (7) are arranged in the box body; the box body is provided with an electronic display screen (4) for flow display in measurement; the box body is inside provided with an external pipe (3) for intake of argon.
Description
Technical field
The present invention relates to a kind of correcting unit, be specifically related to a kind of continuous cast mold on-line argon-blow flowmeter survey accuracy correction device and bearing calibration, belong to continuous casting and control technical field.
Background technology
In existing continuous casting working procedure, crystallizer is the most critical equipment that the molten steel that continuous casting working procedure provides converter is converted into slab.The continuous casting working procedure shunting by Metal in Tundish, by the submersed nozzle of tundish bottom, is injected into molten steel in the middle of crystallizer, is cooled down by the water flowing of copper plate of crystallizer, forms certain shell thickness, the slab of internal wick-containing.Slab is by pulling out after the cooling twice molding of runner, thus completes whole continuous casting production process.And crystallizer Argon technology is the technology that steel mill is commonly used the most both at home and abroad.By the Argon to tundish to each position of crystallizer, can effectively completely cut off the air secondary oxidation to molten steel in casting process.Argon uniform precipitation in crystallizer simultaneously can well improve again the flow field in crystallizer and the thawing promoting covering slag in crystallizer and spreadability.In at present from Metal in Tundish to crystallizer, the most all use stopper Argon (or slide plate Argon), the multichannel argon such as filling pipe end Argon, argon gas-sealed.The most commonly used is an overall argon control chamber, is completed the control of each Argon Gas Loop by parts such as internal pressure regulation, Flow-rate adjustment.If but substantial amounts of argon is blown in the middle of crystallizer, the instability of molten steel flow field in the middle of crystallizer will certainly be caused.The instability of molten steel flow field can directly result in slab crack defect, the dreg defect produced.Therefore the amount of being blown into controlling crystallizer argon is the most generally taked to reduce this type of slab defect.As certain steel mill domestic just requires that the amount of being blown into of single channel argon not can exceed that 5L/min, the argon flow amount fluctuation of single regulation not can exceed that 0.5L/min, if single argon blowing rate branch road is opened, display flow is 4.5L/min, actual flow is then much larger or much smaller than this flow shown, so will certainly cause the inefficacy that on-the-spot Argon controls.The conference of crossing of actual flow causes the dreg defect of slab, and actual flow is too small, can not well improve again the flow field in crystallizer.It is therefore seen that the importance of the flowmeter accuracy in argon control chamber.Continuous casting production scene is a high temperature, the production scene of dust, after long-time use, the certainty of measurement of effusion meter is certain to change, the change of certainty of measurement is actual is exactly that actual flow is inconsistent with display flow, is now accomplished by the precision to effusion meter and carries out demarcating correction.That is allow the actual flow of effusion meter consistent with display flow.But argon flow amount meter belongs to high-accuracy metering outfit, general factory does not the most possess self-calibration condition and the qualification of effusion meter.The department that must deliver to specialty after disassembling demarcates.And continuous casting is a continuous production process, needs for proving flowmeter to dismantle every time and send to demarcation and just seem complicated and loaded down with trivial details, repeatedly send to demarcation the most unrealistic.If but not carrying out the precision calibration of effusion meter, then the inaccurate of flow also results in the passive of continuous casting manufacturing technique control.Therefore, exigence one device solves above-mentioned technical problem.
Summary of the invention
The present invention is just for technical problem present in prior art, a kind of continuous cast mold on-line argon-blow flowmeter survey accuracy correction device is provided, electronic flowmeter and online electronic flowmeter in this device belong to same model, and through the periodic calibrating detection of professional accreditation department, its certainty of measurement complies fully with onsite application requirement.Timing uses correcting unit to connect online argon-blowing device, recording on-line argon-blow device display flow value and correcting unit effusion meter of the present invention display flow value under same argon flow amount, the two groups of data measured according to on-line argon-blow device and correcting unit of the present invention calculate linear relationship KXAnd deviation value P0 。Existing argon control chamber increases effusion meter display precision calibration function, under same output flow, realize the effusion meter flow indication on on-line correction device consistent with the effusion meter flow indication on on-line argon-blow device, owing to the effusion meter on on-line correction device is periodic calibrating and detection, if so under same flow exports the two effusion meter display flow consistent, just can complete the most quick online accuracy correction to the problematic effusion meter on argon control chamber.
To achieve these goals, technical scheme is as follows, a kind of continuous cast mold on-line argon-blow flowmeter survey accuracy correction device, it is characterized in that, described correcting unit includes casing, and described casing is provided with handle, and box house is provided with regulated power supply and mass flow regulation valve mass flowmenter, the electronic display of flow indication when being provided with measurement on casing, is provided with the external pipeline for accessing argon in described casing.
The bearing calibration of continuous cast mold on-line argon-blow flowmeter survey accuracy correction device, it is characterised in that described method is as follows,
A kind of continuous cast mold on-line argon-blow flowmeter survey accuracy correction device, it is characterized in that, described correcting unit includes casing, it is provided with handle on described casing, box house is provided with regulated power supply and mass flow regulation valve mass flowmenter, the electronic display of flow indication when being provided with measurement on casing, is provided with the external pipeline for accessing argon in described casing.
The bearing calibration of continuous cast mold on-line argon-blow flowmeter survey accuracy correction device, it is characterised in that described method is as follows,
1), choose and the online same model of argon measurement apparatus and the mass flowmenter of certainty of measurement and mass flow regulation valve,
11), installation configures portable on-line correction device, and in a pre-installation by specialty detection department of country, the effusion meter in this correcting unit is carried out professional demarcation detection；
12), this Mobile Online's correcting unit external power supply, its external pipeline is linked into online needs and measures on one of them output pipe of the argon-blowing device of correction；
13), the pipe valve of on-line argon-blow device is opened, point argon flow amount that 10 to 15 regulations are different, and it is separately recorded in line argon-blowing device and this movable type on-line correction device respective flow indication value；
2), carry out data process, utilize mathematical regression Equation for Calculating.Being located at measured by line shift calibrating device those group data out is Y, and that group numerical value of the measured record of on-line argon-blow device is X, sets up regression equation Yi=a+bX, determines a and regression coefficient b.The method of asking of regression straight line usesMethod of least square, it is determined that a and regression coefficient b, it is simply that determine the on-line argon-blow device effusion meter of correspondence and the linear relationship K of this movable type on-line correction device effusion meterXAnd deviation value P0；
21), for the argon flow amount of every primary Ioops, if the flow value of correcting unit is Y, the value being located at line argon-blowing device effusion meter is X；
22), according to above measured by 10 to 15 times record on-line argon-blow device and this movable type on-line correction device respective flow indication value respectively organize data.Being located at measured by line shift calibrating device those group data out is Y, and that group numerical value measured by on-line argon-blow device is X, sets up regression equation Yi=a+bX, determines a and regression coefficient b.The method of asking of regression straight line usesMethod of least square, it is determined that a and regression coefficient b, it is simply that determine the on-line argon-blow device effusion meter of correspondence and the linear relationship K of this movable type on-line correction device effusion meterXAnd deviation value P0；Its method of least square formula is as follows:
Find out linear relationship KXAnd deviation value P0；
3) on on-line argon-blow device, increase calibration function, utilize linear relationship KXAnd deviation value P0The effusion meter display precision of on-line equipment is carried out on-line correction；
31) on on-line argon-blow device, increase the linear relationship K of each output pipeXAnd deviation value P0Input dialogue frame and calibrating function button；
32), on on-line argon-blow device, wherein a branch road setting flow value is decomposed into " display flow/Kx+Po ", for controlling mass flow regulation valve valve opening；The value calculated with " actual flow * Kx-Po " is used as the flow indication on on-line argon-blow device；
33), adopt under same output flow, gather on-line argon-blow device and improve quality effusion meter display flow value A and on-line correction device is improved quality the flow value B that effusion meter shows；
34), collect demarcation signal after, allow the mass flow regulation valve on portable on-line correction device be adjusted to A by adjusting valve opening by B；
35) " display flow/Kx+Po " i.e. A/Kx+Po, is utilized to calculate the actual actual flow value that should use on on-line argon-blow device, if this value is C；
36), C value feeding back to on-line argon-blow device mass flow regulation valve again, this regulation valve will readjust valve opening with C value for desired value；
37) value, allowing " actual flow * Kx-Po " to calculate is used as the flow indication on on-line argon-blow device；The i.e. value of " C*Kx-Po " shows on on-line argon-blow effusion meter display table；
38) this on-line correction function, is completed.
Relative to prior art, the invention have the advantages that, 1) this technical scheme global design is ingenious, compact conformation, realize the on-line correction of continuous cast mold argon blowing rate measurement accuracy of measurement, the step of dismounting and special censorship is carried out owing to eliminating each mass flowmenter, well improve the service life of mass flowmenter, after prunus mume (sieb.) sieb.et zucc. steel steel mill uses this device, the moon rate of breakdown of its crystallizer argon blowing rate meter all achieves " 0 " fault in continuous 5 months.2) working time is saved, it is ensured that the accuracy guarantee of continuous casting online crystallizer Argon；After prunus mume (sieb.) sieb.et zucc. steel steel mill uses this device, the single Argon management control accuracy of on-line argon-blow device can control in fluctuation less than ± 0.05L/min.Due to the raising of Argon control accuracy, its slab bubble caused due to Argon instability, dreg defect incidence rate is also fallen below less than 0.6% by 0.78% before using.3) this technical scheme realizes the online quick accuracy correction to effusion meter problematic on argon control chamber, and work efficiency is high, eliminates and the dismounting of the most each mass flowmenter is sent to the tedious steps demarcated；4) this technical scheme cost is relatively low, it is simple to large-scale popularization and application.
Accompanying drawing explanation
Fig. 1 is correcting unit schematic diagram of the present invention；
Fig. 2 is that the present invention uses status architecture schematic diagram；
In figure: 1, mass flow regulation valve, 2, casing, 3, external pipeline, 4, electronic display, 5, handle, 6, regulated power supply, 7, mass flowmenter, 8, correcting unit, 9, online tunger tube way outlet, 10, mass flowmenter in line loop, 11, on-line argon-blow device display screen.
Detailed description of the invention:
In order to deepen the understanding of the present invention, with specific embodiment, the present invention is further explained explanation below in conjunction with the accompanying drawings.
Embodiment 1: on-the-spot argon control chamber feels there is exception, or does not correct for a long time, and current flow indication verity is existed certain suspection by technologists.The present invention is utilized to solve as follows:
1), choose and the online same model of argon measurement apparatus and the electronic flowmeter of certainty of measurement, assemble according to Fig. 1 after carrying out demarcating detection through specialized department；Described correcting unit includes casing, it is provided with handle on described casing, box house is provided with regulated power supply (6) and mass flow regulation valve (1) mass flowmenter (7), the electronic display (4) of flow indication when being provided with measurement on casing, is provided with the external pipeline (3) for accessing argon in described casing.
11), according to installing the portable on-line correction device of configuration shown in Fig. 1, and in a pre-installation the effusion meter in this correcting unit is carried out specialty demarcation detection；
12), this Mobile Online's correcting unit external power supply, according to the use schematic diagram of Fig. 2, its external pipeline is linked into online needs and measures on one of them output pipe of argon-blowing device of correction；
13), open on-line argon-blow device pipe valve, be respectively adjusted to different argon flow amounts, regulate different flows according to the amplitude of accommodation of process requirements, be separately recorded in line argon-blowing device and movable type on-line correction device of the present invention respective flow indication value；
2), carry out data process, find out on-line argon-blow device effusion meter and the linear relationship K of movable type on-line correction device effusion meter of the present inventionXAnd deviation value P0；Being located at measured by line shift calibrating device those group data out is Y, and that group numerical value measured by on-line argon-blow device is X, sets up regression equation Yi=a+bX, determines a and regression coefficient b.The method of asking of regression straight line usesMethod of least square, it is determined that a and regression coefficient b, it is simply that determine the on-line argon-blow device effusion meter of correspondence and the linear relationship K of this movable type on-line correction device effusion meterXAnd deviation value P0；
21), for the argon flow amount of every primary Ioops, if the flow value of correcting unit is Y, the value being located at line argon-blowing device effusion meter is X；
22), according to above measured multi-group data, regression equation Y is set upi=a+bX, determines a and regression coefficient b.The method of asking of regression straight line usesMethod of least square, determine that a value is 0.8, and regression coefficient b value see table for 0.9(), the namely corresponding linear relationship K determining on-line argon-blow device effusion meter and this movable type on-line correction device effusion meterXAnd deviation value P0；Find out linear relationship KXIt is 0.9, deviation value P0It is 0.8.Its method of least square formula is as follows:
3), on on-line argon-blow device, increase calibration function, utilize linear relationship KXAnd deviation value P (0.9)0(0.8) the effusion meter display precision of on-line equipment is carried out on-line correction；
31), the linear relationship K of each output pipe on on-line argon-blow deviceXAnd deviation value P0Input dialogue frame in respectively input linear relation KXAnd deviation value P (0.9)0And determine input (0.8)；
32), the argon flow amount on on-line argon-blow device is adjusted to a value, under same output flow, now on-line argon-blow device electronic flowmeter show value is 10L/min(A value), and the on-line correction device electronic flowmeter show value of correspondence is 9.8L/min(B value)；
33), activating calibrating procedure on on-line argon-blow device, after collecting demarcation signal, the flow value on portable on-line correction device is allowed its flow be adjusted to 10L/min by 9.8L/min by adjusting valve opening by system；I.e. B value is adjusted to A value
34) " display flow/Kx+Po " i.e. A/Kx+Po, is utilized to calculate the actual actual flow value that should use on on-line argon-blow device, if this value is C, then C=10/0.9+0.8=11.91
；
35), flow valve aperture is readjusted according to actual set flow value " 11.91 " on on-line argon-blow device；
36) value, allowing " actual flow * Kx-Po " to calculate is used as the flow indication on on-line argon-blow device；The i.e. value of " C*Kx-Po " shows on on-line argon-blow effusion meter display table；Then show value should be: 11.91*0.9-0.8=9.9(approximates 10)." 9.9 " display calculated is on on-line argon-blow effusion meter display table；
37), now under same flow, the value shown by on-line measurement device electronic flowmeter and moving correcting device electronic flowmeter is each about 10L/min；
38) this on-line correction function, is completed；
It should be noted that above-described embodiment, be not used for limiting protection scope of the present invention, equivalents done on the basis of technique scheme or replacement each fall within the scope that the claims in the present invention are protected.
Claims (2)
1. a continuous cast mold on-line argon-blow flowmeter survey accuracy correction device, it is characterized in that, described correcting unit includes casing, it is provided with handle on described casing, box house is provided with regulated power supply (6) and mass flow regulation valve (1) mass flowmenter (7), the electronic display (4) of flow indication when being provided with measurement on casing, is provided with the external pipeline (3) for accessing argon in described casing.
2. the bearing calibration of continuous cast mold on-line argon-blow flowmeter survey accuracy correction device, it is characterised in that described method is as follows,
1), choose and the online same model of argon measurement apparatus and the mass flowmenter of certainty of measurement and mass flow regulation valve,
11), installation configures portable on-line correction device, and in a pre-installation by specialty detection department of country, the effusion meter in this correcting unit is carried out professional demarcation detection；
12), this Mobile Online's correcting unit external power supply, its external pipeline is linked into online needs and measures on one of them output pipe of the argon-blowing device of correction；
13), the pipe valve of on-line argon-blow device is opened, point argon flow amount that 10 to 15 regulations are different, and it is separately recorded in line argon-blowing device and this movable type on-line correction device respective flow indication value；
2), carry out data process, utilize mathematical regression Equation for Calculating；
Being located at measured by line shift calibrating device those group data out is Y, and that group numerical value of the measured record of on-line argon-blow device is X, sets up regression equation Yi=a+bX, determines a and regression coefficient b；
The method of asking of regression straight line usesMethod of least square, it is determined that a and regression coefficient b, it is simply that determine the on-line argon-blow device effusion meter of correspondence and the linear relationship K of this movable type on-line correction device effusion meterXAnd deviation value P0；
21), for the argon flow amount of every primary Ioops, if the flow value of correcting unit is Y, the value being located at line argon-blowing device effusion meter is X；
22), according to above measured by 10 to 15 times record on-line argon-blow device and this movable type on-line correction device respective flow indication value respectively organize data；
Being located at measured by line shift calibrating device those group data out is Y, and that group numerical value measured by on-line argon-blow device is X, sets up regression equation Yi=a+bX, determines a and regression coefficient b；
The method of asking of regression straight line usesMethod of least square, it is determined that a and regression coefficient b, it is simply that determine the on-line argon-blow device effusion meter of correspondence and the linear relationship K of this movable type on-line correction device effusion meterXAnd deviation value P0；Its method of least square formula is as follows:
Find out linear relationship KXAnd deviation value P0；
3) on on-line argon-blow device, increase calibration function, utilize linear relationship KXAnd deviation value P0The effusion meter display precision of on-line equipment is carried out on-line correction；
31) on on-line argon-blow device, increase the linear relationship K of each output pipeXAnd deviation value P0Input dialogue frame and calibrating function button；
32), on on-line argon-blow device, wherein a branch road setting flow value is decomposed into " display flow/Kx+Po ", for controlling mass flow regulation valve valve opening；The value calculated with " actual flow * Kx-Po " is used as the flow indication on on-line argon-blow device；
33), adopt under same output flow, gather on-line argon-blow device and improve quality effusion meter display flow value A and on-line correction device is improved quality the flow value B that effusion meter shows；
34), collect demarcation signal after, allow the mass flow regulation valve on portable on-line correction device be adjusted to A by adjusting valve opening by B；
35) " display flow/Kx+Po " i.e. A/Kx+Po, is utilized to calculate the actual actual flow value that should use on on-line argon-blow device, if this value is C；
36), C value feeding back to on-line argon-blow device mass flow regulation valve again, this regulation valve will readjust valve opening with C value for desired value；
37) value, allowing " actual flow * Kx-Po " to calculate is used as the flow indication on on-line argon-blow device；The i.e. value of " C*Kx-Po " shows on on-line argon-blow effusion meter display table；
38) this on-line correction function, is completed.
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| CN201510371733.0A CN106323426B (en) | 2015-06-30 | 2015-06-30 | Continuous cast mold on-line argon-blow flow measurement accuracy of measurement bearing calibration |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110307876A (en) * | 2018-03-27 | 2019-10-08 | 阿自倍尔株式会社 | Thermal flow sensor device and flow correction method |
| CN111693107A (en) * | 2019-03-12 | 2020-09-22 | 上海梅山钢铁股份有限公司 | Multifunctional probe combination device of power bar flowmeter |
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| CN104249140A (en) * | 2013-06-26 | 2014-12-31 | 宝山钢铁股份有限公司 | Argon blowing integration system of continuous casting crystallizer |
| US20170185091A1 (en) * | 2015-12-29 | 2017-06-29 | Hitachi Metals, Ltd. | Gas insensitive mass flow control systems and methods |
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| CN102680059A (en) * | 2012-05-24 | 2012-09-19 | 哈尔滨电机厂有限责任公司 | Method for reducing small-flow calibration error of test bed flow meter of hydraulic machine model |
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| CN106323426B (en) | 2019-11-19 |
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