CN102878097A - Control system of dust removal fan of steel mill - Google Patents
Control system of dust removal fan of steel mill Download PDFInfo
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- CN102878097A CN102878097A CN 201210352679 CN201210352679A CN102878097A CN 102878097 A CN102878097 A CN 102878097A CN 201210352679 CN201210352679 CN 201210352679 CN 201210352679 A CN201210352679 A CN 201210352679A CN 102878097 A CN102878097 A CN 102878097A
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Abstract
The invention discloses an electric control system, and in particular relates to a control system of a dust removal fan of a steel mill. The control system comprises a programmable controller 8 (PLC) connected with a touch screen 4, wherein all kinds of parameters are provided through the touch screen 4 and are transmitted to the programmable controller 8 (PLC), the programmable controller 8 (PLC) is used for transmitting the corresponding signal to a frequency converter 6, and the frequency converter 6 is connected to the fan through an introduced lead 16, so that the fan is controlled; dust concentration control parameters are predetermined according to own product of a factory, two dust concentration sensors 15 are arranged on opposite angles of each dust hood, and the corresponding regulating valve 13 can be opened by the programmable controller 8 (PLC) according to a detection signal of each dust concentration sensor 15; and meanwhile, the frequency of the frequency converter 6 is output and adjusted, the whole system forms a closed-loop control and is started through one key, and the full intelligent operation is really realized.
Description
Technical field
The present invention is a kind of electrical control equipment, is particularly useful for the dedusting fan control system of steel mill.
Background technique
In the driving control of steel mill's intermediate frequency furnace and Dedusting of EAF blower fan, the Dust Capacity that produces because of the quantity of driving the steel stove and every steel stove in process of production is different, so cause the dedusting load just to be not quite similar, the power that the maximum motor of generation dedusting consumption electric energy is needed is just different, in existing dedusting fan control, corresponding deficiency is arranged, control mode is nothing but with regard to following 2 kinds: 1. fan motor across-the-line starting, motor start-up is just finished and is moved with rated velocity, no matter PRODUCTION STATUS how, fan motor all is oepration at full load; 2. fan motor varying frequency starting, although the method can be passed through operator's manual tune frequency converter frequency, reach certain energy-conserving action, but artificial the adjustment certainly do not satisfied on-the-spot production requirement, and frequency is little, and dust removal efficiency just reduces, just do not reach the requirement of environmental protection, frequency is large, although meet the requirement of environmental protection, electric energy has just been wasted.In actual production process, it is just large again that the blower fan frequency is got over Wind Volume, and dust removing effects is just better, but really will waste a large amount of electric energy; In the normal operation of dedusting, not all bag filtrations after filtration of whole dust, wherein have is that direct natural subsidence is in ash bucket greatly, bad such as the blower fan FREQUENCY CONTROL, naturally this part dust of direct sedimentation is also filtered through filter bag, in the working life that can reduce filter bag and filter bag ash removal system, increased the maintenance cost of dedusting; Steel mill also always seeking a kind of control mode of reasonable, this practical technique has just adapted to the requirement of steel mill, and air-blower control has truly been accomplished not only environmental protection but also energy-conservation.
Summary of the invention
The present invention aim to provide a kind of can be by default dust concentration control electric machine frequency, thereby realize the needed actual air volume of dedusting, reach the control system of saving power.
Steel mill of the present invention dedusting fan control system, comprise electrical control cabinet 1 and cabinet door 2 disposed thereon, electrical control cabinet 1 interior main power switch 3, frequency variator 6, programmable controller 8, pipeline 12, modulating valve 13, dust shield 14, the sensor of dust concentration 15 of arranging arranges touch screen 4 on the described cabinet door 2; Main power switch 3 connects frequency variator 6 by wire 5, programmable controller 8 connects respectively touch screen 4, frequency variator 6, modulating valve 13, sensor of dust concentration 15 by wire, frequency variator 6 is drawn wire 16, inhale the 14 interior left and right sides and be separately installed with sensor of dust concentration 15, dust shield 14 arranges opening and draws outside the electrical control cabinet 1, dust shield 14 upper ends are connected to pipeline 12 by modulating valve 13, and pipeline 12 leads to outside the electrical control cabinet 1.
Dust shield 14 arranges 3 groups, and every group of dust shield 14 interior left and right sides are separately installed with sensor of dust concentration 15.
During work, steel mill's exhaust system work, the air-flow of discharging this moment is carried dust secretly and is full of dust shield 14, the sensor of dust concentration 15 that is arranged on the dust shield 14 interior left and right sides detects dust concentration, and signal transferred to programmable controller 8, programmable controller 8 (PLC) thus regulating and controlling valve 13 folding degree realize control to the air-flows in the dust shield 14, avoid air-flow excessive or too small, simultaneously signal is transferred to frequency variator 6, frequency variator 6 is according to the signal output signal fan of receiving, thereby realizes air-blower control not only environmental protection but also energy-conservation truly.
Programmable controller 8 (PLC) is connected with touch screen 4, by touch screen 4 various parameters are set and are transferred to programmable controller 8 (PLC), programmable controller 8 (PLC) transfers to frequency variator 6 with the signal of correspondence, be connected to blower fan by frequency variator 6 by the wire 16 of drawing, realize the control of blower fan.
Factory can preset according to the product of oneself dust concentration control parameter, at each dust shield 14, the diagonal angle all is equipped with 2 sensor of dust concentration 15, fill 2 main phenomenons in order to prevent that on-the-spot Dust distribution is inhomogeneous, according to the testing signal of each sensor of dust concentration 15, programmable controller 8 (PLC) is opened corresponding regulating valve 13; The frequency of frequency variator 6 is regulated in simultaneously output, and whole system has formed closed loop control, and a key starts, and has really accomplished full intellectualized operation.
Description of drawings
Fig. 1 is steel mill of the present invention dedusting fan control system overall structure schematic diagram.
Fig. 2 is electrical control cabinet front schematic view of the present invention.
Embodiment
Below in conjunction with description of drawings the present invention:
As shown in Figure 1, steel mill of the present invention dedusting fan control system, comprise electrical control cabinet 1 and cabinet door 2 disposed thereon, electrical control cabinet 1 interior main power switch 3, frequency variator 6, programmable controller 8, pipeline 12, modulating valve 13, dust shield 14, the sensor of dust concentration 15 of arranging arranges touch screen 4 on the described cabinet door 2; Main power switch 3 connects frequency variator 6 by wire 5, programmable controller 8 connects respectively touch screen 4, frequency variator 6, modulating valve 13, sensor of dust concentration 15 by wire, frequency variator 6 is drawn wire 16, the dust shield 14 interior left and right sides are separately installed with sensor of dust concentration 15, dust shield 14 arranges opening and draws outside the electrical control cabinet 1, so that with steel mill's exhaust system connection, dust shield 14 upper ends are connected to pipeline 12 by modulating valve 13, pipeline 12 leads to outside the electrical control cabinet 1.
During work, steel mill's exhaust system work, the air-flow of discharging this moment is carried dust secretly and is full of dust shield 14, the sensor of dust concentration 15 that is arranged on the dust shield 14 interior left and right sides detects dust concentration, and signal transferred to programmable controller 8, programmable controller 8 (PLC) thus regulating and controlling valve 13 folding degree realize control to the air-flows in the dust shield 14, avoid air-flow excessive or too small, simultaneously signal is transferred to frequency variator 6, frequency variator 6 is according to the signal output signal fan of receiving, thereby realizes air-blower control not only environmental protection but also energy-conservation truly.
Preferred dust shield 14 arranges 3 groups, and every group of dust shield 14 interior left and right sides are separately installed with sensor of dust concentration 15, can satisfy the situations such as multi units tube road design of different steel mills, and versatility is stronger.
Fig. 2 is electrical control cabinet front schematic view of the present invention, and touch screen 4 is set on the cabinet door 2.
Programmable controller 8 (PLC) is connected with touch screen 4, by touch screen 4 various parameters are set and are transferred to programmable controller 8 (PLC), programmable controller 8 (PLC) transfers to frequency variator 6 with the signal of correspondence, be connected to blower fan by frequency variator 6 by the wire 16 of drawing, realize the control of blower fan; Factory can preset according to the product of oneself dust concentration control parameter, at each dust shield 14, the diagonal angle all is equipped with 2 sensor of dust concentration 15, fill 2 main phenomenons in order to prevent that on-the-spot Dust distribution is inhomogeneous, according to the testing signal of each sensor of dust concentration 15, programmable controller 8 (PLC) is opened corresponding regulating valve 13; The frequency of frequency variator 6 is regulated in simultaneously output, and whole system has formed closed loop control, and a key starts, and has really accomplished full intellectualized operation.
Claims (2)
1. steel mill's dedusting fan control system, comprise electrical control cabinet (1) and cabinet door (2) disposed thereon, it is characterized in that: main power switch (3), frequency variator (6), programmable controller (8), pipeline (12), modulating valve (13), dust shield (14), sensor of dust concentration (15) are set in the electrical control cabinet (1), touch screen (4) is set on the described cabinet door (2); Main power switch (3) connects frequency variator (6) by wire (5), programmable controller (8) connects respectively touch screen (4) by wire, frequency variator (6), modulating valve (13), sensor of dust concentration (15), frequency variator (6) is drawn wire (16), the interior left and right sides of dust shield (14) is separately installed with sensor of dust concentration (15), dust shield (14) arranges opening and draws outside the electrical control cabinet (1), dust shield (14) upper end is connected to pipeline (12) by modulating valve (13), and pipeline (12) leads to outside the electrical control cabinet (1).
2. steel mill according to claim 1 dedusting fan control system, it is characterized in that: dust shield (14) arranges 3 groups, and the interior left and right sides of every group of dust shield (14) is separately installed with sensor of dust concentration (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210352679 CN102878097A (en) | 2012-09-21 | 2012-09-21 | Control system of dust removal fan of steel mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210352679 CN102878097A (en) | 2012-09-21 | 2012-09-21 | Control system of dust removal fan of steel mill |
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| CN102878097A true CN102878097A (en) | 2013-01-16 |
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| CN 201210352679 Pending CN102878097A (en) | 2012-09-21 | 2012-09-21 | Control system of dust removal fan of steel mill |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103830979A (en) * | 2014-02-25 | 2014-06-04 | 中国矿业大学 | Integrated control system and integrated control method for mining dry dust remover |
| CN107026378A (en) * | 2016-02-01 | 2017-08-08 | 上海庆良电子有限公司 | The automatic dust removal equipment of Automobile lamp holder connector processing work platform |
| CN108054730A (en) * | 2017-11-29 | 2018-05-18 | 西安理工大学 | High-power high voltage dedusting power source control system and power supply time difference protection control method |
| CN108889055A (en) * | 2018-07-23 | 2018-11-27 | 重庆玄康环保机电设备有限公司 | Industrial air dust-extraction unit based on automation control |
| CN110440610A (en) * | 2019-08-15 | 2019-11-12 | 夏颖 | A kind of depositing dust high efficiency metallurgy electric arc furnaces |
-
2012
- 2012-09-21 CN CN 201210352679 patent/CN102878097A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103830979A (en) * | 2014-02-25 | 2014-06-04 | 中国矿业大学 | Integrated control system and integrated control method for mining dry dust remover |
| CN107026378A (en) * | 2016-02-01 | 2017-08-08 | 上海庆良电子有限公司 | The automatic dust removal equipment of Automobile lamp holder connector processing work platform |
| CN108054730A (en) * | 2017-11-29 | 2018-05-18 | 西安理工大学 | High-power high voltage dedusting power source control system and power supply time difference protection control method |
| CN108054730B (en) * | 2017-11-29 | 2019-05-28 | 西安理工大学 | High-power high voltage dedusting power source control system and the power supply time difference protect control method |
| CN108889055A (en) * | 2018-07-23 | 2018-11-27 | 重庆玄康环保机电设备有限公司 | Industrial air dust-extraction unit based on automation control |
| CN110440610A (en) * | 2019-08-15 | 2019-11-12 | 夏颖 | A kind of depositing dust high efficiency metallurgy electric arc furnaces |
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Application publication date: 20130116 |