CN101714001A - Automatic control device and method of rotary chute pair transmission tilt angle of blast furnace bell-less top - Google Patents
Automatic control device and method of rotary chute pair transmission tilt angle of blast furnace bell-less top Download PDFInfo
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- CN101714001A CN101714001A CN200910225544A CN200910225544A CN101714001A CN 101714001 A CN101714001 A CN 101714001A CN 200910225544 A CN200910225544 A CN 200910225544A CN 200910225544 A CN200910225544 A CN 200910225544A CN 101714001 A CN101714001 A CN 101714001A
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Abstract
The invention provides automatic control device and method of a rotary chute pair transmission tilt angle of a blast furnace bell-less top for automatically controlling the tilt angle of a chute. The automatic control device comprises information collection equipment, a PLC control system and transmission equipment, wherein the information collection equipment is used for collecting the tilting angle position information of the chute and the position information of the chute and transmitting the information to the PLC control system; the PLC control system is used for analyzing the information collected by the information collection equipment, generating a control signal and transmitting the control signal to the transmission equipment; and the transmission equipment is used for controlling the tilting angle of the chute according to the control signal of the PLC control system. The device and the method eliminate the influence brought by deviations caused by the angle alignment control of the stroke of a chute pair transmission tilt angle drive linear oil cylinder on the material distribution of the blast furnace, sufficiently give play to the ideal material distribution superiority of the bell-less material distributor and guarantee the stability of a smelting process. In addition, the invention can prevent the frequent switchover of an electromagnetic directional valve of the chute pair transmission tilt angle drive linear oil cylinder and keep the stable output characteristics of a hydraulic system.
Description
Technical field
The present invention relates to a kind of automaton and control method of blast furnace bell-less furnace roof equipment, particularly relate to a kind of rotary chute pair transmission tilt angle (α angle) hydraulic system automaton and method of blast furnace bell-less furnace roof equipment.
Background technology
Focus of the present invention is the automatic control that blast furnace bell-less furnace roof chute pair transmission tilt angle (α angle) drives the straight line oil cylinder, abbreviates position, α angle as and controls automatically.Matching in position, the α angle automatic control of control and chute main transmission (β angle) position automatically, directly is applied in the technical field that blast furnace production is smelted, and is mainly used to solve blast furnace production to the furnace charge stable operation, the even distribution problem of furnace charge.
The accurate control in position, swivel chute α angle can improve the technological process control of quality, improves the charging efficiency of blast furnace.By control position, chute α angle, can obtain multiple distributing mode, realize furnace throat circumferencial direction and the even distribution of furnace charge radially and the burden distribution of certain point, promote furnace condition anterograde, and for handle the furnace charge pipeline, accident such as go creates conditions partially.
There are some shortcomings in traditional blast furnace bell-less furnace roof equipment, and is strict as raw material granularity is required; Mechanical drive is complicated; Furnace charge is skewness along the circumferential direction; The nitrogen consumption that is used to seal and cools off is big etc.
At the shortcoming that traditional no bell furnace roof equipment exists, the chute of novel no bell furnace roof equipment fascinates and partly changes by the transmission of straight line oil cylinder hydraulic.This bellless distributor α angle hydraulic system is limit by State of Blast Furnace apical ring border and hydraulic system oil medium, transmission also has specific (special) requirements to the straight line oil cylinder hydraulic, control as the hydrostatic transmission that can not adopt electrohydraulic servo valve to form, the hydraulic system characteristic that formed by the proportion directional valve is limit, can not satisfy position control (α angle) driven the frequent requirement of switching of straight line oil cylinder, be difficult to the angular error that swing produces to chute and make rapid reaction, can not guarantee that the angle of finding accurately at α angle is ± 0.50; Having influenced furnace charge stable operation and furnace charge evenly distributes.
Summary of the invention
For overcoming above-mentioned technological deficiency, the present invention adopts a kind of chute α angle position automaton and method of being made up of the proportion directional valve, has solved single Stroke Control and can not realize problem to the Accurate Position Control of fascinating of chute auxiliary driving (α angle).
A kind of rotary chute pair transmission tilt angle of blast furnace bell-less top automaton, inclination angle to chute is controlled, and it is characterized in that, comprises information acquisition equipment, gather the turning angle positional information of chute and the information of chute position, and pass in the PLC control system; The PLC control system, the information that the analytical information collecting device is gathered generates control signal, and control signal is flowed to drive apparatus; Drive apparatus according to the control signal of PLC control system, is controlled the turning angle of chute.
Pass through technique scheme, what the invention provides a kind of pid algorithm control characteristic with band dead band carries out the automatically apparatus and method of control of position to chute pair transmission tilt angle (α angle), having eliminated chute pair transmission tilt angle (α angle) drives the control of straight line oil cylinder stroke and finds the influence that the deviation of angle is brought to blast furnace material distribution accurately, give full play to the desirable cloth superiority of this type bellless distributor, guarantee the stability of smelting process.
The present invention can prevent that the solenoid directional control valve of chute pair transmission tilt angle (α angle) driving straight line oil cylinder from frequently switching, and keeps the stable output characteristics of hydraulic system.
Description of drawings
Fig. 1 is the composition frame chart of blast furnace bell-less furnace roof chute pair transmission tilt angle automaton of the present invention;
Fig. 2 is that the dead band of system is provided with synoptic diagram;
Fig. 3 is the pid stream journey figure of band dead band;
Fig. 4 has shown that the α angle drives straight line oil cylinder proportion directional valve output pulse width conversion figure;
When Fig. 5 has shown definite output pulse width change point, the operating point synoptic diagram of output pulse width conversion during E≤MW;
Fig. 6 has shown the operating point synoptic diagram of E＞MW output pulse width conversion.
Reference numerals list
1-chute auxiliary driving (α angle) drives the straight line oil cylinder;
2-turns round floating frame; The 22-chute;
3-chute turn motor;
The 4-chute lifts the terminal limit; 4 '-chute falls the terminal limit;
The 5-absolute value encoder; 6-proportion directional valve;
7-PLC (programmable logic controller) control system;
8-high-speed counter module;
9-DI (data input) load module; 10-ratio amplification module;
The 11-analog output module; 12-DO (data output) output module;
The 13-CPU module; The 14-set angle module of fascinating;
The 15-turning angle is extracted module out; 16-cloth control program module;
17-integrated logic judge module; 18-distributing device working mode selection switch;
The operation of 19-distributing device α angle; The 20-monitoring module;
The given module of 21-
Embodiment
As shown in Figure 1, the blast furnace bell-less furnace roof chute pair transmission tilt angle automaton of this method invention comprises following building block:
Straight line oil cylinder 1 is used to drive chute pair transmission tilt angle (α angle), and straight line oil cylinder 1 links to each other with the output terminal of proportion directional valve 6, is used for driving chute and fascinates under the control of proportion directional valve 6, and straight line oil cylinder 1 makes chute 2 swings, until reaching the set angle that fascinates;
Proportion directional valve 6, output terminal links to each other with straight line oil cylinder 1 and turn motor 3, the stroke of the running of control straight line oil cylinder 1 and turn motor 3, thereby control transmission inclination angle, the input end of proportion directional valve 6 links to each other with ratio amplification module 10;
Absolute value encoder 5 is a kind of measurement feedback assemblys, is arranged near the chute, is used to detect chute turning angle position signalling; The output terminal of absolute value encoder 5 links to each other with the high-speed counter module 8 of PLC control system 7, the position measured signal is sent to the high-speed counter module 8 of α angle PLC control system 7;
Chute lifts terminal limit switch 4, and chute falls terminal limit switch 4 ', determines the initial and terminal location of chute, guarantees the accurate operation of incident angle module and the replacing of chute device 2, and the output terminal of two switches all links to each other with DI load module 9;
Distributing device working mode selection switch 18, the automatic or manual mode that is used for distributing device α angle is selected;
Distributing device α angle operational module 19 is used for extracting the turning angle extraction at the chute inclination angle in the program module 15 out with being stored in turning angle;
Monitoring module 20 is used to the angle of confirming that distributing device α angle operational module 19 is extracted out;
Given module 21 is used for height stockline and distributing device α angle operational module 19 that blast furnace operating is set are compared, determine two with the relevant inclination angle of height stockline, two are worth as the turning angle setting value with inclination angles that just stockline is relevant.
Above-mentioned PLC control system 7 comprises:
The turning angle that is connected the output terminal of cloth control program module 16 is extracted chute that module 15 the takes out position control program of fascinating out from cloth control program module 16;
High-speed counter module 8 links to each other with absolute value encoder 5, the pulse signal that absolute value encoder 5 produces is changed, the turning angle pulse output signals that absolute value encoder detects after high-speed counter module 8 is handled as CPU module 13 deal with data.
The turning angle pulse output information that the chute that above-mentioned DI load module 9 detects lifts the terminal limit 4, falls the terminal limit 4 ' information, high-speed counter module 8 is collected outputs to CPU module 13;
The Coordinated Control Signal that CPU detects after integrated logic module 17 is comprehensively relatively calculated is converted into 24VDC switching value output signal and delivers to DO switching value output module 12;
The output terminal of DO switching value output module 12 discharges input end with the outside of ratio amplification module 10 and is connected;
In control procedure, the output valve of DO switching value output module 12 is as the enable signal of ratio amplification module 10, and analog output module 11 is as the differential input signal of ratio amplification module 10.
Under the position control total travel time and regulation output insensitive interval and the service condition of 6 minimum movements times of proportion directional valve of predefined proportion directional valve 6, the incident angle control signal is delivered in the ratio amplification module 10 by analog output module 11, and ratio amplification module 10 forms the signal of control ratio direction valve control electromagnet 6.When position, α angle was overgauge, straight line oil cylinder 1 fascinated chute downwards, otherwise when position, α angle was minus deviation, oil cylinder 1 upwards fascinated chute.The α angle by turning angle extract module 15 out, cloth control program module 16 is determined, and compares with the physical location at α angle in monitoring module 20, monitor.
The present invention also provide a kind of have change the α angle and use the distributor chute control device that fascinates the α angle is controlled control method as the active position of regulating measure.The α control system is the main body that chute fascinates and controls.
Rotary chute pair transmission tilt angle of blast furnace bell-less top of the present invention is controlled control method automatically and is comprised:
The information acquisition step, information acquisition equipment is gathered the turning angle positional information of chute 2 and the information of chute position, and passes in the PLC control system 7;
Control signal generates step, and the information that PLC control system 7 analytical information collecting devices are gathered generates control signal, and control signal is flowed to drive apparatus;
Transmission control chute step, drive apparatus is controlled the turning angle of chute 2 according to the control signal of PLC control system 7, when the turning angle position is overgauge, drive apparatus fascinates chute downwards, and when the turning angle position was minus deviation, drive apparatus upwards fascinated chute.
The flow process of position signal acquisition of fascinating is:
α lifts at the angle terminal limit 4, fall the terminal limit 4 ' enters DI load module 9 as the controlled condition signal; Absolute value encoder 5 sends the position measured signal to the high-speed counter module 8 of α angle PLC control system 7.
The automatic measurement of two important electric parameters:
First is the measurement of turning angle parameter, promptly by the vertical indicator stem that is hinged on the distributing device backing ring, by rack pinion rectilinear motion is become rotation, drives absolute value encoder angular rate signal is imported high-speed counter module 8.In the chute rotary course, indicator stem is gone here and there up and down and is about 3～4mm, can cause the control deviation about 0.20.Exist the variation of 'inertia' turning angle very little because modules such as rack and pinion mechanism, transmission catcher are also gapped, turning angle can satisfy 0.50 control requirement substantially.
Second is that the detection of α angle maximum pendulum angle and minimum swash angle is promptly by the vertical indicator stem that is hinged on the distributing device backing ring, by rack pinion rectilinear motion is become and to hit chi and rotate, collision maximum pendulum angle or minimum swash angle limit switch also makes its corresponding actions, the limit signal input DI load module 9 of pivot angle is in order to the operation of calibration or replacing chute.
The distributor chute technical indicator of fascinating:
1. the kind of drive of turning angle: equidistant three of arranging on circumference that place the distributing device seal box to cover drive straight line oil cylinder → middle extension bar → lifting backing ring → main carrying roller → floating frame → crank → chute pivot angles;
2. travelling speed:
Chute whereabouts V
α drop=2 °/sec
Chute lifts V
α life=1.5 °/sec
3. pivot angle α
Min=10 °; α
Max=45 °
4. three upper and lower cavity oil circuits that drive the straight line oil cylinder respectively are associated in together up and down respectively, realize strict synchronism by the vertical slideway in the distributing device seal box during work.
5. find angle accurately: ± 0.2 °, be not more than 0.5 ° when oil cylinder internal leakage time error occurring, otherwise give former operating angle automatically for change.
6. distributing mode:
Automatic distributing: monocycle, dicyclo, many rings.
The fixed point cloth: manual operation, the fixed point error is manually grasped.
The distributor chute control of fascinating:
The α angle drives the straight line oil cylinder and works in the central controlled mode of parallel connection, and for avoiding driving straight line oil cylinder frequent movement, the action of α angle proportion directional valve 6 systems is finished with impulse form.When α angular displacement surpasses ± 0.50, just begin action and carry out position adjustments.When the α angle of reality was less than normal, it is electric that regulating system gets proportion directional valve 6 rising coils, drives the straight line oil cylinder and rise, and strengthens the α angle, when reaching given α angle value, and proportion directional valve 6 rising coil losing electricities, chute is slack.Otherwise when the α angle of reality was bigger than normal, regulating system got proportion directional valve 6 decline coils, drive the straight line oil cylinder and descend, reduce the α angle, when reaching the α angle value of given proportion directional valve output pulse width correspondence, proportion directional valve 6 decline coil losing electricities, chute is slack.
For avoiding system under the deviation of moment generation, it is too frequent to regulate action, and system is provided with the dead band.
The dead band is meant the deviation upper limit when beginning to move and the zone between the lower limit, and the size of dead band can be adjusted, and should dwindle as far as possible.The dead band is shown in Figure 2, when α angular displacement reaches certain value, begins to regulate.When α angle measured value reaches A1 switching point (α angle forward correction point), system's control ratio direction valve and straight line cylinder action, the chute tilting system is once action, just last till that the α angle is reduced to B1 switching point (α angle forward correction end point) and just stops, it is slack that drive the straight line oil cylinder this moment, proportion directional valve 6 coils stop action, and adjustment process finishes.Otherwise, when α angle measured value reaches A2 switching point (α oppositely rectifies a deviation a little at the angle), system's control ratio direction valve and straight line cylinder action, the chute tilting system is once action, just last till that the α angle is reduced to B2 switching point (α angle oppositely rectify a deviation end point) and just stops, make to drive the set-point rising of the corresponding α of straight line oil cylinder angle, it is slack that drive the straight line oil cylinder this moment, and adjustment process finishes.In fact regulating system this scope below the upper limit of dead band and more than the lower limit can not moved.In addition, α angle A1/A2 switching point and α angle B1/B2 switching point are adjustable.
7. method of adjustment:
7.1 be by the fascinate pid control algorithm of the band dead band of a α angle set-point when adjusting of chute:
When | E|≤e, carry out the PID instruction;
When | E|＞e, do not carry out the PID instruction;
E-deviation in the formula, E=SV-PV;
Interval, dead band (deviation).
E is an adjustable parameter in the formula, and concrete numerical value is decided according to the debugging situation of chute.
The SV-setting value
The PV-input value
During debugging because of noting:
The E value is too small not to have the effect of avoiding system oscillation;
The E value is excessive, and system can produce bigger hysteresis;
7.2 the pid stream journey figure of band dead band
As shown in Figure 3, the pid stream journey that has shown the band dead band.
8. output pulse width conversion
When the moving angle of the output of fascinating surpassed integration stop line A1 or A2, integration stopped, and output pulse width is transformed to logical.If it is turning angle when being lower than integration initial B1 or B2 that the pv measured value reduces, output pulse width is transformed to disconnected, and integration begins.
When output pulse width is transformed to when logical, Fig. 4 has shown that the α angle drives straight line oil cylinder proportion directional valve output pulse width conversion figure.
9. the switching point of output pulse width conversion:
The operating point of output pulse width conversion should be taken all factors into consideration the relation between operating point and dead band, deviation, the output pulse width:
If E≤MW,
A1＝e；B1＝e-MW，
Or A2=e; B2=e-MW.
If E＞MW,
A1＝e-MW+E；B1＝e-MW，
Or A2=e-MW+E; B2=e-MW.
In the formula:
The A1-A1 switching point
The B1-B1 switching point
The E-deviation;
The MW-output pulse width.
Fig. 5 has shown the operating point synoptic diagram of E≤MW output pulse width conversion, and Fig. 6 has shown the operating point synoptic diagram of E＞MW output pulse width conversion.
Below only be the preferred forms of invention, those of ordinary skills can carry out various changes under the prompting of embodiment, so scope of patent protection is as the criterion with the content of claim.
Claims (10)
1. a rotary chute pair transmission tilt angle of blast furnace bell-less top automaton is controlled the inclination angle of chute (2), it is characterized in that, comprising:
Information acquisition equipment is gathered the turning angle positional information of chute (2) and the information of chute position, and is passed in the PLC control system (7);
PLC control system (7), the information that the analytical information collecting device is gathered generates control signal, and control signal is flowed to drive apparatus;
Drive apparatus according to the control signal of PLC control system (7), is controlled the turning angle of chute (2).
2. chute pair transmission tilt angle automaton according to claim 1 is characterized in that:
Drive apparatus comprises that proportion directional valve (6), turn motor (3) and chute auxiliary driving turning angle drive straight line oil cylinder (1); Wherein:
Straight line oil cylinder (1) links to each other with the output terminal of proportion directional valve (6), is used for that the driving chute fascinates under the control of proportion directional valve (6), until reaching the set angle that fascinates;
Chute turn motor (3), the turn of control chute;
Proportion directional valve (6), output terminal links to each other with straight line oil cylinder (1) and turn motor (3), the running of control straight line oil cylinder (1) and turn motor (3), thereby control transmission inclination angle, the input end of proportion directional valve (6) links to each other with the output terminal of PLC control system (7).
3. chute pair transmission tilt angle automaton according to claim 1 is characterized in that:
PLC control system (7), its output terminal connects ratio amplification module (10), and incident angle control signal passing ratio amplification module (10) sends drive apparatus to,
The input end of PLC control system (7) links to each other with information acquisition equipment.
4. chute pair transmission tilt angle automaton according to claim 3 is characterized in that, PLC control system (7) also comprises:
Integrated logic module (17), an output terminal of integrated logic module (17) links to each other with CPU module (13), the another one output terminal links to each other with cloth control program module (16), and the distribution chute inclination angle fascinated location storage in cloth control program module (16);
Turning angle is extracted module (15) out, is connected the output terminal of cloth control program module (16), the chute of the taking-up position control program of fascinating from cloth control program module (16);
The set angle module of fascinating (14) is connected turning angle and extracts out between module (15) and the CPU module (13), is used to set turning angle;
DI load module (9) links to each other with information acquisition equipment, is used to receive the controlled condition signal;
High-speed counter module (8) links to each other with information acquisition equipment, and the pulse signal that information acquisition equipment produces is changed;
CPU module (13) links to each other with the output terminal of high-speed counter module (8), the output terminal of DI load module (9), the output terminal of the set angle module of fascinating (14) and the output terminal of integrated logic module (17);
Wherein, CPU module (13) links to each other with the output terminal of high-speed counter module (8), signal after the high-speed transitions and the cloth control program module that is stored in the CPU module (13) are fascinated the set angle value relatively, and the deviation of generation is through having the pid algorithm Model Calculation of dead band;
Analog output module (11), the input end of DO output module (12) is connected to the output terminal end of CPU module (13); Analog output module (11), the output terminal of DO output module (12) are connected with ratio amplification module (10) respectively; The incident angle control signal is delivered in the ratio amplification module (10) by analog output module (11).
5. chute pair transmission tilt angle automaton according to claim 4 is characterized in that:
Information acquisition equipment comprises: chute lifts the terminal limit (4), chute falls the terminal limit (4 '), absolute value encoder (5), wherein:
Absolute value encoder (5) detects chute turning angle position signalling, and its output terminal links to each other with the high-speed counter module (8) of PLC control system (7), the position measured signal is sent to the high-speed counter module (8) of PLC control system (7);
Chute lifts terminal limit switch (4), and chute falls terminal limit switch (4 '), determines the initial and terminal location of chute respectively, and the output terminal of two switches all links to each other with DI load module (9).
6. chute pair transmission tilt angle automaton according to claim 4 is characterized in that, also comprises:
Distributing device working mode selection switch (18) is controlled automatically with starting the inclination angle;
Distributing device α angle operational module (19) is extracted turning angle out;
Monitoring module (20) is used to the angle of confirming that distributing device α angle operational module (19) is extracted out;
Given module (21) is used for height stockline and distributing device α angle operational module (19) that blast furnace operating is set are compared, determine two with the relevant inclination angle of height stockline, two are worth as the turning angle setting value with inclination angles that just stockline is relevant.
7. a rotary chute pair transmission tilt angle of blast furnace bell-less top autocontrol method is characterized in that, comprising:
The information acquisition step, information acquisition equipment is gathered the turning angle positional information of chute (2) and the information of chute position, and passes in the PLC control system (7);
Control signal generates step, and the information that PLC control system (7) analytical information collecting device is gathered generates control signal, and control signal is flowed to drive apparatus;
Transmission control chute step, drive apparatus is according to the control signal of PLC control system (7), turning angle to chute (2) is controlled, when the turning angle position is overgauge, drive apparatus fascinates chute downwards, when the turning angle position was minus deviation, drive apparatus upwards fascinated chute.
8. chute pair transmission tilt angle autocontrol method according to claim 7 is characterized in that:
In the information acquisition step, comprise measurement to the turning angle parameter: the vertical indicator stem by being hinged on the distributing device backing ring, by rack pinion rectilinear motion is become rotation, drive absolute value encoder angular rate signal is imported the high-speed counter module.
9. chute pair transmission tilt angle autocontrol method according to claim 7 is characterized in that:
In the information acquisition step, comprise the detection of fascinate angle maximum pendulum angle and minimum swash angle: by the vertical indicator stem that is hinged on the distributing device backing ring, by rack pinion rectilinear motion is become and to hit chi and rotate, collision maximum pendulum angle or minimum swash angle limit switch also makes its corresponding actions, the limit signal input DI load module of pivot angle is in order to the operation of calibration or replacing chute.
10. chute pair transmission tilt angle autocontrol method according to claim 7 is characterized in that:
In control signal generates step, comprise the step that the dead band is set, the dead band is the deviation upper limit when beginning to move and the zone between the lower limit, drive apparatus below the upper limit of dead band and more than the lower limit this scope be failure to actuate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910225544 CN101714001B (en) | 2009-11-30 | 2009-11-30 | Automatic control device and method of rotary chute pair transmission tilt angle of blast furnace bell-less top |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910225544 CN101714001B (en) | 2009-11-30 | 2009-11-30 | Automatic control device and method of rotary chute pair transmission tilt angle of blast furnace bell-less top |
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| CN101714001A true CN101714001A (en) | 2010-05-26 |
| CN101714001B CN101714001B (en) | 2013-06-26 |
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| CN 200910225544 Expired - Fee Related CN101714001B (en) | 2009-11-30 | 2009-11-30 | Automatic control device and method of rotary chute pair transmission tilt angle of blast furnace bell-less top |
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| CN1186861A (en) * | 1996-12-31 | 1998-07-08 | 徐寿华 | Oscillating chute type bell-free top distributor for blast furnace |
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| CN100491542C (en) * | 2007-03-09 | 2009-05-27 | 清华大学 | Rotary blast furnace material-free bell furnace top distributing gear |
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| CN102839248A (en) * | 2012-09-18 | 2012-12-26 | 天津市三特电子有限公司 | Online detection device and detection method of blast furnace swinging chute |
| CN102827973A (en) * | 2012-09-20 | 2012-12-19 | 石家庄华海冶金科技有限公司 | Method for adjusting and controlling initial state of blast furnace ring-shaped material distributing chute |
| CN102945050A (en) * | 2012-11-26 | 2013-02-27 | 昆山北极光电子科技有限公司 | Method for automatically calibrating initial mechanical position |
| 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 |
| CN103305644A (en) * | 2013-06-17 | 2013-09-18 | 瑞安市阀门一厂 | Bell-less top rotary material distribution device |
| CN105739418A (en) * | 2014-12-10 | 2016-07-06 | 上海宝钢工业技术服务有限公司 | Electrohydraulic control system and method for blast furnace distributing device |
| CN106521064A (en) * | 2016-10-27 | 2017-03-22 | 江阴兴澄特种钢铁有限公司 | Process for quickly handling electrical failure of swinging chute of blast furnace |
| CN106521064B (en) * | 2016-10-27 | 2018-08-31 | 江阴兴澄特种钢铁有限公司 | A kind of blast furnace swinging sliding nozzle electric fault quickly handles setting |
| CN107656900A (en) * | 2017-09-01 | 2018-02-02 | 武汉钢铁有限公司 | A kind of method at different stockline compensation angles during determination blast furnace material distribution |
| CN107656900B (en) * | 2017-09-01 | 2021-09-10 | 武汉钢铁有限公司 | Method for determining compensation angles of different stocklines in material distribution process of blast furnace |
| CN108486300A (en) * | 2018-04-04 | 2018-09-04 | 秦皇岛秦冶重工有限公司 | The control method of distributing device tilting equipment and the mechanism |
| CN111575424A (en) * | 2020-05-25 | 2020-08-25 | 重庆钢铁集团电子有限责任公司 | Method for improving control precision of chute tilting angle of blast furnace top distributor |
| CN115032885A (en) * | 2022-04-13 | 2022-09-09 | 中煤科工智能储装技术有限公司 | System and method for accurately positioning and controlling swing chute |
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