CN207362282U - A kind of converter mouth differential pressure regulating device with fuzzy Prediction compensation - Google Patents
A kind of converter mouth differential pressure regulating device with fuzzy Prediction compensation Download PDFInfo
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- CN207362282U CN207362282U CN201721357925.7U CN201721357925U CN207362282U CN 207362282 U CN207362282 U CN 207362282U CN 201721357925 U CN201721357925 U CN 201721357925U CN 207362282 U CN207362282 U CN 207362282U
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- differential pressure
- converter
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- adder
- fuzzy prediction
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Abstract
The utility model discloses a kind of converter mouth differential pressure regulating device with fuzzy Prediction compensation, including frequency converter, dedusting fan, differential pressure measuring mechanism, the control mechanism of fuzzy Prediction compensation can be carried out to differential pressure, the differential pressure measuring mechanism is installed on the fixation petticoat pipe of converter, the differential pressure measuring mechanism is connected with the control mechanism that fuzzy Prediction compensation can be carried out to differential pressure, the signal input part of the control mechanism and frequency converter that fuzzy Prediction compensation can be carried out to differential pressure connects, the signal output part of the frequency converter is connected with dedusting fan, the dedusting fan is installed on the flue end of converter.
Description
Technical field
Smelting industry process control equipment technical field is the utility model is related to, more particularly to a kind of band fuzzy Prediction compensates
Converter mouth differential pressure regulating device.
Background technology
When converter carries out coal-gas recovering using possible trouble method（OG methods）To improve gas quality and the rate of recovery and reducing converter
Flue gas leaks environmental pollution, sets micro-differential pressure regulating system, and traditional converter mouth differential pressure adjusts general both at home and abroad
Using the size of flue gas pressures in converter mouth elementary errors pressure measuring device measurement fire door petticoat pipe, controlled accordingly by each quasi-controller
The aperture of the second Venturi tube aditus laryngis R-D valves is made, fire door pressure is maintained in the range of ± 20Pa.
However, main problem existing for existing micro-differential pressure regulating system has：
1. it is subject to volume of smoke in converter steelmaking process, splashings etc. to attach positioned at the second Venturi tube aditus laryngis R-D valve valve plates
By often there is clamping stagnation, cause differential pressure regulating system out of control, the cleaning, scale removal to valve plate must be examined during converter stops production
Repair, influence Rate of Converter Gas Recovery and cause environment.
2. drive the hydraulic drive mechanism of R-D valves and its control amplifier architecture complexity, maintenance requirement higher, in actual life
Hydraulic system fault is higher in production, one of the main reason for also causing differential pressure regulating system often out of control.
3. dedusting fan is switched to the high speed operation mode of constant speed when oxygen rifle is smelted under converter, the adjusting of fire door pressure by
R-D valves are realized, more compared to method wind turbine power consumption described in the utility model.
4. flue path is longer between the second Venturi tube aditus laryngis R-D valves and converter mouth, there is hysteresis in control system, conventional
PID control method is difficult to solve, and causes system control stability and precision poor.
The content of the invention
In view of the above-mentioned problems, the utility model, which provides a kind of converter mouth differential pressure with fuzzy Prediction compensation, adjusts dress
Put and method.
To achieve these goals, the technical solution of the utility model is specific as follows：
A kind of converter mouth differential pressure regulating device with fuzzy Prediction compensation, including frequency converter, dedusting fan, differential pressure
Measuring mechanism, the control mechanism that fuzzy Prediction compensation can be carried out to differential pressure, the differential pressure measuring mechanism are installed on converter
Fixation petticoat pipe on, the differential pressure measuring mechanism with it is described can to differential pressure carry out fuzzy Prediction compensation control mechanism connect
Connect, the signal input part of the control mechanism and frequency converter that fuzzy Prediction compensation can be carried out to differential pressure connects, the change
The signal output part of frequency device is connected with dedusting fan, and the dedusting fan is installed on the flue end of converter.
The differential pressure measuring mechanism is provided with 4 pressure tappings on fixed petticoat pipe, and 4 pressure tappings pass through pilot
The positive pressure side of pipeline and differential pressure transmitter connects, the negative pressure side joint air of the differential pressure transmitter, between 4 pressure tappings
Phase angle is 90 °.
The control mechanism that fuzzy Prediction compensation can be carried out to differential pressure includes comparator, converter differential pressure Fuzzy Control
Device processed, data alignment unit, high low speed controller, adder A, fuzzy Prediction compensator, adder B, oxygen rifle signaling switch, institute
Comparator, converter differential pressure fuzzy controller data alignment unit, oxygen rifle signaling switch and adder A is stated to be sequentially connected in series, it is described
Oxygen rifle signaling switch and the oxygen rifle of converter decline sensor connection, and the adder B is connected with the comparator, described fuzzy pre-
Estimate compensator to be connected with the adder B, the fuzzy Prediction compensator is connected with the converter differential pressure fuzzy controller, institute
State frequency converter to be connected with the adder A, the adder A is connected with high low speed controller, the differential pressure measuring mechanism point
It is not connected with the fuzzy Prediction compensator, adder B.
The converter differential pressure fuzzy controller is a D controller.
The pressure value that the utility model is monitored according to differential pressure measuring mechanism, which is transferred to respectively fuzzy
Predictive compensation device and adder B, after carrying out analytic operation to signal data by fuzzy Prediction compensator, export to adder B
After signal y, signal y are conveyed to the signal progress add operation of adder B with differential pressure measuring mechanism, operation values are sent to ratio
Compared with device, it can show that fire door coal gas is all recovered the fire door air pressure for not occurring flue gas and leaking due to have input in advance to comparator
Value ± 20Pa, therefore, for comparator by received operation values compared with atmospheric pressure value ± 20Pa, the difference that comparator is drawn is low
In -20Pa or during higher than+20Pa, operation values e is sent into converter differential pressure fuzzy controller and carries out computing by comparator, and converter is micro-
The signal value U that differential pressure fuzzy controller will obtain after computing, in order to make the signal value U of converter differential pressure fuzzy controller output more
Add accurate, therefore signal value U feeding data alignment units be finely adjusted amendment, make its precision, the signal after precision according to
It is secondary by adder A, frequency converter, to control the rotating speed of dedusting fan, using the speed of dedusting fan rotating speed, make fire door pressure value
It is maintained in ± 20Pa, differential pressure measuring mechanism in the running, monitors fire door pressure value in real time, and be in real time conveyed to pressure value
Fuzzy Prediction compensator, adder B, real time data contrast is carried out by comparator, and to converter differential pressure fuzzy controller not
Interruption sends operation values, after converter differential pressure fuzzy controller analyzes operation values, divides two-way to send signal value U, and one
Road is sent to data alignment unit, data alignment unit data are refined after by adder A, frequency converter, to control dedusting
The rotating speed of wind turbine, when differential pressure measuring mechanism detects current fire door pressure still not in ± 20Pa, differential pressure measuring machine
Structure sends a signal to fuzzy Prediction compensator, adder B again, and at this time, on the one hand fuzzy Prediction compensator receives differential pressure
The signal that measuring mechanism occurs, on the other hand also receives the second road signal value U of converter differential pressure fuzzy controller transmission, mould
Two paths of signals after treatment, is formed thermal compensation signal by paste predictive compensation device, and thermal compensation signal enters adder adder B, addition
After two paths of signals is added by device B, be sent to comparator, comparator by received signal and the atmospheric pressure value ± 20Pa being previously entered into
Row compares, and when the difference that comparator is drawn is less than -20Pa or higher than+20Pa, operation values e is sent into converter differential pressure by comparator
Fuzzy controller carries out computing, and the signal value U that converter differential pressure fuzzy controller will obtain after computing, signal value U are sent into data
Adjustment unit is finely adjusted amendment, and the signal after precision passes sequentially through adder A, frequency converter, to control turning for dedusting fan
Speed, differential pressure measuring mechanism receives pressure signal again, and transfers out signal, and differential pressure can be carried out to obscure in advance by being again introduced into
Estimate the control mechanism of compensation, until received signal and the atmospheric pressure value ± 20Pa that is previously entered are compared by comparator, compare
Difference e=0 that device is drawn, shows that fire door pressure is in the control range of ± 20Pa, converter differential pressure fuzzy controller is transported
Calculation value e=0, stops operation control immediately.
The beneficial effects of the utility model are：
1st, the utility model directly controls dedusting fan rotating speed by fuzzy algorithmic approach, overcomes conventionally employed second Venturi tube
Aditus laryngis R-D valves valve plate is easily by dirty flue gas clamping stagnation, the problem of causing differential pressure regulating system out of control.
2. since the utility model is eliminated because of the hydraulic drive mechanism of R-D valves, failure rate and dimension are effectively reduced
Protect technical sophistication difficulty.
3rd, can effectively be overcome because of dedusting fan as a result of the control method compensated with fuzzy Prediction, the utility model
The long influence lagged to automatically controlling quality between wind turbine and micro-differential pressure power.
4th, the utility model changes traditional wind by the rotating speed continuous control during converter smelting to dedusting fan
Machine determines rotating speed control, and the power consumption loss of wind turbine is effectively reduced while accurately control micro-differential pressure power.
Brief description of the drawings
Fig. 1 is the schematic diagram of the utility model.
Wherein, 1. comparator, 2. converter differential pressure fuzzy controllers, 3. data alignment units, 4. frequency converters, 5. dedusting wind
Machine, 6. differential pressure measuring mechanisms, 7. high low speed controllers, 8. adder A, 9. fuzzy Prediction compensators, 10. adder B.
Embodiment
As shown in Figure 1, a kind of converter mouth differential pressure regulating device with fuzzy Prediction compensation, including frequency converter 4, dedusting
Wind turbine 5, differential pressure measuring mechanism 6, the control mechanism that fuzzy Prediction compensation can be carried out to differential pressure, can carry out differential pressure
The control mechanism of fuzzy Prediction compensation includes comparator 1, converter differential pressure fuzzy controller 2, data alignment unit 3, high low speed
Controller 7, adder A8, fuzzy Prediction compensator 9, adder B10, oxygen rifle signaling switch, comparator 1, converter elementary errors pressing mold
Fuzzy controllers 2, data alignment unit 3, oxygen rifle signaling switch and adder A8 are sequentially connected in series, the oxygen of oxygen rifle signaling switch and converter
Rifle declines sensor connection, and adder B10 is connected with comparator 1, and fuzzy Prediction compensator 9 is connected with adder B10, obscures pre-
Estimate compensator 9 to be connected with converter differential pressure fuzzy controller 2, frequency converter 4 is connected with adder A8, adder A8 and high low speed control
Device 7 processed connects, and differential pressure measuring mechanism 6 is connected with fuzzy Prediction compensator 9, adder B10 respectively, converter differential pressure Fuzzy Control
Device 2 processed is a D controller, and the signal output part of frequency converter 4 is connected with dedusting fan 5, and dedusting fan 5 is installed on the cigarette of converter
Road end, differential pressure measuring mechanism are provided with 4 pressure tappings on fixed petticoat pipe, 4 pressure tappings by impulse piping with it is poor
The positive pressure side of pressure transmitter connects, the negative pressure side joint air of differential pressure transmitter, and the phase angle between 4 pressure tappings is 90 °.
When the utility model is used, realize the adjusting to micro-differential pressure by following steps：
The first step, measuring state is transferred to by differential pressure measuring mechanism 6 from nitrogen purging state；
Second step, passes sequentially through high low speed controller 7, adder A8, frequency converter 4 and controls dedusting fan 5 to carry out 1500 r/
Min is operated；
3rd step, sets 1 air pressure numerical value of comparator as ± 20Pa；
4th step, converter start to smelt, and when the oxygen rifle of converter drops to workspace, the oxygen rifle of converter declines sensor detection
After entering workspace to oxygen rifle, electric signal passes to oxygen rifle signaling switch, and oxygen rifle signaling switch closure, can carry out differential pressure
The control mechanism of fuzzy Prediction compensation obtains electric forming circuit, meanwhile, pass sequentially through high low speed controller 7, adder A8, frequency converter
4 control dedusting fans 5 carry out the high rotating speed operation of 2700 r/min；
5th step, fire door micro-pressure-difference, converter mouth elementary errors pressure are detected by 4 pressure tappings of differential pressure measuring mechanism 6
Signal Y send to fuzzy Prediction compensator 9, another way and is compensated with fuzzy Prediction after 6 measures conversion of differential pressure measuring mechanism all the way
The value y that device 9 exports after computing, value y enter adder B10 with first via delivery value, and add operation is done by adder B10, it
Afterwards, operation values are exported the fire door air pressure for inputting obtained operation values and step 3 to comparator 1, comparator 1 by adder B10
Value ± 20Pa carries out difference operation and obtains operation values e；
6th step, when the difference that comparator 1 is drawn in step 5 is less than -20Pa or higher than+20Pa, comparator 1 will
Operation values e is sent into converter differential pressure fuzzy controller 2 and carries out computing, and converter differential pressure fuzzy controller 2 will obtain after computing
Signal value U is sent into data alignment unit 3 and is finely adjusted amendment, is sent into adder A8 afterwards and is added with the high rotating speed in step 4
Method computing, operation result are exported to frequency converter 4, and the rotating speed of dedusting fan 5 is adjusted by frequency converter 4 and reduces or raises, at the same time
Repeat step five, the operation values e that comparator 1 obtains in step 5 are sent into converter differential pressure fuzzy controller 2 and carry out computing, converter
Mono- tunnels of signal value U obtained after computing feeding data alignment unit 3 is finely adjusted amendment by differential pressure fuzzy controller 2, afterwards
It is sent into adder A8 and carries out add operation with the high rotating speed in step 4, operation result is exported to frequency converter 4, passes through frequency converter 4
Adjusting the rotating speed of dedusting fan 5 reduces or raises, and another way is sent into the step of fuzzy Prediction compensator 9 participates in repeating again
In five, when comparator 1 carries out difference operation and obtains operation values e=0 in step 5, show that fire door pressure is in ± 20Pa's
In control range, converter differential pressure fuzzy controller 2 obtains operation values e=0, stops operation control immediately.
Claims (4)
- A kind of 1. converter mouth differential pressure regulating device with fuzzy Prediction compensation, it is characterised in that：Including frequency converter（4）, remove Dirt wind turbine（5）, differential pressure measuring mechanism（6）, can to differential pressure carry out fuzzy Prediction compensation control mechanism, the differential pressure Measuring mechanism（6）It is installed on the fixation petticoat pipe of converter, the differential pressure measuring mechanism（6）Differential pressure can be carried out with described The control mechanism connection of fuzzy Prediction compensation, the control mechanism and frequency converter that fuzzy Prediction compensation can be carried out to differential pressure （4）Signal input part connection, the frequency converter（4）Signal output part and dedusting fan（5）Connection, the dedusting fan （5）It is installed on the flue end of converter.
- 2. a kind of converter mouth differential pressure regulating device with fuzzy Prediction compensation according to claim 1, its feature exist In：The differential pressure measuring mechanism（6）4 pressure tappings are provided with fixed petticoat pipe, 4 pressure tappings pass through connecting pipe The positive pressure side of road and differential pressure transmitter connects, the negative pressure side joint air of the differential pressure transmitter, the phase between 4 pressure tappings Parallactic angle is 90 °.
- 3. a kind of converter mouth differential pressure regulating device with fuzzy Prediction compensation according to claim 2, its feature exist In：The control mechanism that fuzzy Prediction compensation can be carried out to differential pressure includes comparator（1）, converter differential pressure fuzzy control Device（2）, data alignment unit（3）, high low speed controller（7）, adder A（8）, fuzzy Prediction compensator（9）, adder B （10）, oxygen rifle signaling switch, the comparator（1）, converter differential pressure fuzzy controller（2）, data alignment unit（3）, oxygen rifle Signaling switch and adder A（8）It is sequentially connected in series, the oxygen rifle of the oxygen rifle signaling switch and converter declines sensor connection, described Adder B（10）With the comparator（1）Connection, the fuzzy Prediction compensator（9）With the adder B（10）Connection, institute State fuzzy Prediction compensator（9）With the converter differential pressure fuzzy controller（2）Connection, the frequency converter（4）With the addition Device A（8）Connection, the adder A（8）With high low speed controller（7）Connection, the differential pressure measuring mechanism（6）Respectively with institute State fuzzy Prediction compensator（9）, adder B（10）Connection.
- 4. a kind of converter mouth differential pressure regulating device with fuzzy Prediction compensation according to claim 3, its feature exist In：The converter differential pressure fuzzy controller（2）For a D controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721357925.7U CN207362282U (en) | 2017-10-20 | 2017-10-20 | A kind of converter mouth differential pressure regulating device with fuzzy Prediction compensation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721357925.7U CN207362282U (en) | 2017-10-20 | 2017-10-20 | A kind of converter mouth differential pressure regulating device with fuzzy Prediction compensation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207362282U true CN207362282U (en) | 2018-05-15 |
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ID=62419822
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721357925.7U Expired - Fee Related CN207362282U (en) | 2017-10-20 | 2017-10-20 | A kind of converter mouth differential pressure regulating device with fuzzy Prediction compensation |
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| Country | Link |
|---|---|
| CN (1) | CN207362282U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107604124A (en) * | 2017-10-20 | 2018-01-19 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of converter mouth differential pressure adjusting means and method with fuzzy Prediction compensation |
-
2017
- 2017-10-20 CN CN201721357925.7U patent/CN207362282U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107604124A (en) * | 2017-10-20 | 2018-01-19 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of converter mouth differential pressure adjusting means and method with fuzzy Prediction compensation |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180515 Termination date: 20181020 |
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| CF01 | Termination of patent right due to non-payment of annual fee |