CN103017158B - Automatic control system of smoke oven - Google Patents
Automatic control system of smoke oven Download PDFInfo
- Publication number
- CN103017158B CN103017158B CN201210580021.6A CN201210580021A CN103017158B CN 103017158 B CN103017158 B CN 103017158B CN 201210580021 A CN201210580021 A CN 201210580021A CN 103017158 B CN103017158 B CN 103017158B
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- control system
- baker
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- automatic control
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- 239000000779 smoke Substances 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000013461 design Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 230000002159 abnormal effect Effects 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 6
- 239000000446 fuel Substances 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000003134 recirculating effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 238000000643 oven drying Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000010742 number 1 fuel oil Substances 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
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- Regulation And Control Of Combustion (AREA)
Abstract
The invention discloses a kind of Automatic control system of smoke oven, take fire box temperature as control object, by controlling to send the method for oil mass and air output to realize the Staged cotrol of temperature, arranges the control inerface of touch-screen according to baker groundwork region.The present invention can realize the automatic collection of baker parameter and the centralized Control of baker process, improves temperature controlled precision, reduces manpower, reduces the waste of fuel because temperature fluctuation causes simultaneously.
Description
Technical field
The present invention relates to baker automatic control technology field, be specifically related to a kind of Automatic control system of smoke oven.
Background technology
Along with the development of science and technology, heat energy and electric energy become the most general energy of benefited people life.Be widely used as the boiler being widely used in the industry such as central heating, generating; baker is the important step ensureing boiler quality; the smoke gas oven drying method of current employing is generally manual operation temperature control; feedback slowly; degree of regulation is low; often can cause larger temperature deviation, boiler stove quality is difficult to ensure card.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of Automatic control system of smoke oven, realize the automatic collection of baker parameter and the centralized Control of baker process, improve temperature controlled precision, reduce manpower, reduce the waste of fuel because temperature fluctuation causes simultaneously.
The technical scheme of technical solution problem of the present invention is as follows:
According to the temperature that the thermocouple be arranged in burner hearth records, data signal is become by resume module, then contrasted by the respective value of the preset temperature curve in processing module, and obtain controlling output quantity by fuzzy PID algorithm computing, export by output module the power stage that 4-20mA analog signals regulates baker burner again, reach the object of control temperature.In order to realize man-machine interaction, native system adopts touch-screen to realize the setting of data, the real-time monitoring of conditional curve, and the function such as the display of the abnormality such as warning.
Accompanying drawings 1, control system take fire box temperature as control object, and by controlling to send the method for oil mass and air output to realize the Staged cotrol of temperature, the control inerface of touch-screen arranges baker groundwork region.
The groundwork region of described baker is burner hearth, ignition under bed burner, rotary separator are imported and exported and material returning valve stands leg 5 regions, each region has 4 (or multiple) temperature points to monitor the profiling temperatures in this region, and the temperature averages that during system cloud gray model, four measuring points monitor and design temperature are consistent.
On the control inerface of described touch-screen, 5 groups of display windows are set, be burner hearth respectively, the outlet of ignition under bed burner, rotary separator entrance, rotary separator, material returning valve founds leg and their corresponding set temperature window and monitor temperature window, also can modify further, Dynamic Announce boiler planar effect picture and action pane position are put, displaying scene situation directly perceived, facilitates workman to understand operation rapidly; Click corresponding 5 set temperature windows, enter heating curve and arrange interface, can arrange respective heating curve respectively to 5 positions, the hop count of heating curve can increase as required or reduce, each set point can be divided into six sections of design temperatures, and every section of setting value comprises time value and temperature value; Baker process interface can show the temperature in each region after starting, and clicks each position and can show the drying out curve of setting and the actual time dependent situation of measuring point temperature curve, and the temperature value of four test points in region.
Described baker will carry out power control, controls the power output of oven drying machine according to the profiling temperatures in this region.Controlled quentity controlled variable is oil mass and air capacity, and oil mass is controlled by electric control valve, and air capacity passes through VFC.Control algolithm adopts fuzzy PID method, and the direct execution unit of basic principle to be distributive value be temperature, blower fan regulates air output by Frequency Converter Control, to ensure that air quantity is corresponding with oil mass.
Described system has abnormal conditions warning function, mainly prevents internal system overtemperature.When temperature exceeding standard, system can reduce distributive value automatically, and the air output that adjustment is corresponding with it.
The invention has the beneficial effects as follows:
A, baker process automatic control system based on PLC and touch-screen, achieve the automatic collection of baker parameter and the centralized Control of baker process;
Manually use in B, minimizing baker process, by temperature setting on the touchscreen, the operation that can realize long-range oil mass and air input controls;
Temperature control precision in c, raising burner hearth, ensures Baker effect, ensures boiler quality, reduce and overhaul number of times in the future;
D, the extent of spreading amd application are wide, are applicable to the baker of the CFBB of various model, produce good economic benefit and social benefit.
Accompanying drawing explanation
Fig. 1 is CFBB baker control system flow chart;
Fig. 2 is fire box temperature Fuzzy PID Control System flow chart;
Fig. 3 is PIC control system flow chart.
Detailed description of the invention
Below in conjunction with accompanying drawing, further disclosure is done to the present invention.
Embodiment 1
Native system have employed the PID control program of band Fuzzy self-turning, just close to continuous control when the numerically controlled cycle is infinitesimal time.The control algolithm of fuzzy is embedded in the design of PLC; and selection is optimized to input and output element, electric prospection device, warning and display element: Programmable Logic Controller host CPU module selects XC3-24R-E type; analog output module selects XC-E2DA; read out instrument adopts 7 inches of tangible control display screens of TH765-N, and K type armoured thermocouple selected by temperature sensor.
Design of Fuzzy PID Controller for the Volume control of fire box temperature, control the realizing to oil mass mainly through control valve of fire box temperature.Simultaneously in order to avoid the frequent movement of fire box temperature adjuster.When fire box temperature change is little, fire box temperature deviation does not participate in fuel-flow control; When fire box temperature deviation ratio is larger, just needs fire box temperature deviation to participate in oil supply and regulate; Reduce control valve opening in limited time exceeding in fire box temperature, increase control valve opening in fire box temperature in limited time lower than lower; If fire box temperature continues to decline, when prescribing a time limit lower than lower, system produces warning and provides prompting.
Accompanying drawing 2 adopts fuzzy serials control recirculating fluidized bed fire box temperature, inner ring be serials control to oil mass, serials control recirculating fluidized bed fire box temperature control system is made up of a few parts such as fuzzy controller, executing agency, control object, temperature transmitters.The basic demand of control system makes furnace temperature run by certain proceduresization, comprises at the uniform velocity temperature-rise period and steady temperature control procedure.In at the uniform velocity temperature-rise period, control system is that simple ratio controls, in Regulation of Constant Temperature, the course of work of Systematical control is that the circulating fluidized bed boiler output quantity Y0 (S) changed through temperature transmitter by the output quantity Y of system (S) compares with the specified rate R (S) in adjuster, produce deviation E (E=R (S)-Y0 (S)) more afterwards, conditioning signal is sent through fuzzy controller, enter the controller of inner ring, executing agency is driven with submaster controller output quantity u, make to be stabilized in a certain numerical value to oil mass m, enter in burner hearth, complete the adjustment work of recirculating fluidized bed fire box temperature, make it to reach constant fire box temperature, and allow to fluctuate up and down in certain scope.
In the PLC program of accompanying drawing 3, the measured value of each temperature sensor is caught by MOV instruction by Analog input mModule, deliver on corresponding word serial shift paths, the highest order (bit) of this shift paths connects the data of specifying and exports, under the effect of serial clock SCK SHL left shift instruction driving data from low to high power one be serially shifted, data shift out by turn from this mouth; By the data that transmit according to a high position front, low level is rear, and SCK often sends 16 pulses and just transmitted frame data (each passage), and every frame data are a word (word), i.e. 16bit.PLC has often driven frame data, just delivers on word serial shift paths with MOV instruction by new data currency, to carry out a new frame transmission.
When program performs, fuzzy-adaptation PID control unit calculates according to the drift gage of check the value and on-the-spot setting valve can calculate control output quantity, and has input module to be sent to electric control valve with 4-20mA, is controlled the temperature of burner hearth by the size of control valve opening.
The above is not limitation of the present invention, does not everyly depart from technical solution of the present invention content, and any simple modification, equivalent variations and the remodeling done above embodiment according to technical spirit of the present invention, still belong to the protection domain of technical solution of the present invention.
Claims (4)
1. Automatic control system of smoke oven, it is characterized in that: the temperature recorded according to the thermocouple be arranged in burner hearth, data signal is become by resume module, then contrasted by the respective value of the preset temperature curve in processing module, and obtain controlling output quantity by fuzzy PID algorithm computing, export by output module the power stage that 4-20mA analog signals regulates baker burner again, realize pot in-furnace temperature and control; Control system take fire box temperature as control object, and by controlling to send the method for oil mass and air output to realize the Staged cotrol of temperature, the control inerface of touch-screen arranges baker groundwork region.
2. Automatic control system of smoke oven according to claim 1, it is characterized in that: the groundwork region of described baker is burner hearth, ignition under bed burner, rotary separator are imported and exported and material returning valve stands leg 5 regions, each region has 4 (or multiple) temperature points to monitor the profiling temperatures in this region, and the temperature averages that during system cloud gray model, four measuring points monitor and design temperature are consistent.
3. Automatic control system of smoke oven according to claim 1, it is characterized in that: the control inerface of described touch-screen is arranged 5 groups of display windows, be burner hearth respectively, ignition under bed burner, rotary separator entrance, rotary separator export, material returning valve founds leg and their corresponding set temperature window and monitor temperature window; Click relative set temperature window, enter heating curve and interface is set; The hop count of heating curve increases as required or reduces, and each set point is divided into six sections of design temperatures, and every section of setting value comprises time value and temperature value.
4. Automatic control system of smoke oven according to claim 1, is characterized in that: described system has abnormal conditions warning function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210580021.6A CN103017158B (en) | 2012-12-28 | 2012-12-28 | Automatic control system of smoke oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210580021.6A CN103017158B (en) | 2012-12-28 | 2012-12-28 | Automatic control system of smoke oven |
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| CN103017158A CN103017158A (en) | 2013-04-03 |
| CN103017158B true CN103017158B (en) | 2016-01-06 |
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| CN201210580021.6A Expired - Fee Related CN103017158B (en) | 2012-12-28 | 2012-12-28 | Automatic control system of smoke oven |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107179685B (en) * | 2016-03-09 | 2019-12-10 | 中国科学院沈阳自动化研究所 | Method for realizing split-range control suitable for multivariable model predictive control |
| CN106933101A (en) * | 2017-04-17 | 2017-07-07 | 中国石油化工股份有限公司 | Combustion furnace fire box temperature monitoring reliability optimization method |
| CN110244644A (en) * | 2019-05-17 | 2019-09-17 | 宁波市北仑环保固废处置有限公司 | A kind of chilling spraying control method and system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269530A (en) * | 2011-08-26 | 2011-12-07 | 西南铝业（集团）有限责任公司 | Furnace temperature control method and furnace temperature control device |
| CN202141337U (en) * | 2011-07-21 | 2012-02-08 | 宁波连通设备制造有限公司 | Dryoff oven device of industrial furnace module |
| CN202486635U (en) * | 2011-11-23 | 2012-10-10 | 中国三冶集团有限公司工业炉工程公司 | Oven drying control system capable of automatically monitoring temperature and pressure of coke oven |
| CN202630710U (en) * | 2012-03-28 | 2012-12-26 | 曲大伟 | Plasma baking furnace and ignition temperature automatic control system for rotary kiln |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101117019B (en) * | 2006-07-31 | 2010-12-29 | 广西工学院 | Temperature control device for full-automatic injecting blowing plastic hollow molding machine and temperature control method thereof |
| CN201680927U (en) * | 2010-02-04 | 2010-12-22 | 北京印刷学院 | High-precision temperature checking instrument based on ARM |
| CN102419281A (en) * | 2011-09-05 | 2012-04-18 | 中山市中健药业有限公司 | NIR (near-infrared spectrum) sample heating controller |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202141337U (en) * | 2011-07-21 | 2012-02-08 | 宁波连通设备制造有限公司 | Dryoff oven device of industrial furnace module |
| CN102269530A (en) * | 2011-08-26 | 2011-12-07 | 西南铝业（集团）有限责任公司 | Furnace temperature control method and furnace temperature control device |
| CN202486635U (en) * | 2011-11-23 | 2012-10-10 | 中国三冶集团有限公司工业炉工程公司 | Oven drying control system capable of automatically monitoring temperature and pressure of coke oven |
| CN202630710U (en) * | 2012-03-28 | 2012-12-26 | 曲大伟 | Plasma baking furnace and ignition temperature automatic control system for rotary kiln |
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