CN103017158A - Automatic control system of smoke oven - Google Patents
Automatic control system of smoke oven Download PDFInfo
- Publication number
- CN103017158A CN103017158A CN2012105800216A CN201210580021A CN103017158A CN 103017158 A CN103017158 A CN 103017158A CN 2012105800216 A CN2012105800216 A CN 2012105800216A CN 201210580021 A CN201210580021 A CN 201210580021A CN 103017158 A CN103017158 A CN 103017158A
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- temperature
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- control system
- baker
- automatic control
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- 239000000779 smoke Substances 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000000643 oven drying Methods 0.000 claims description 9
- 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
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 238000012935 Averaging Methods 0.000 claims description 2
- 230000002159 abnormal effect Effects 0.000 claims description 2
- 238000004886 process control Methods 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 7
- 239000000446 fuel Substances 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 9
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000012530 fluid Substances 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
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003750 conditioning effect 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
- 230000003134 recirculating effect Effects 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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Abstract
The invention discloses an automatic control system of a smoke oven. By using hearth temperature as a control object, split control of temperature is realized by controlling the oil quantity amount and the wind feeding amount. A control interface of a touch screen is arranged according to a main work area of the oven. According to the system provided by the invention, centralized control of automatic collection of oven parameters and oven process can be realized, so that precision of temperature control is improved, the manpower is reduced, and meanwhile, fuel waste caused by temperature fluctuation can be reduced.
Description
Technical field
The present invention relates to baker automatic control technology field, be specifically related to a kind of smoke gas oven drying automatic control system.
Background technology
Along with the development of science and technology, heat energy and electric energy become the most general energy of people's life of being benefited.Be widely used as the boiler that is widely used in the industries such as central heating, generating; baker is an important step that guarantees the boiler quality; the smoke gas oven drying method that adopts at present is generally the manually-operated temperature control; feedback slowly; degree of regulation is low; often can cause larger temperature deviation, the boiler stove quality is difficult to be guaranteed.
Summary of the invention
Technical problem to be solved by this invention is: a kind of smoke gas oven drying automatic control system is provided, realize the automatic collection of baker parameter and the centralized Control of baker process, improve temperature controlled precision, reduce manpower, reduce simultaneously because the waste of fuel that temperature fluctuation causes.
The technical scheme of technical solution problem of the present invention is as follows:
The temperature that records according to the thermocouple that is arranged in the burner hearth, become data signal by resume module, then the respective value by the preset temperature curve in the processing module compares, and by the controlled output quantity of fuzzy PID algorithm computing, regulated again the power stage of baker burner by output module output 4-20mA analog signals, reach the purpose 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 functions such as demonstration of the abnormality such as warning.
Consult accompanying drawing 1, control system is take fire box temperature as control object, and by minute process control that control send the method for oil mass and air output to realize temperature, the control interface of touch-screen arranges baker groundwork zone.
The groundwork zone of described baker is burner hearth, ignition under bed burner, rotary separator is imported and exported and vertical 5 zones of leg of material returning valve, each zone has 4 (or a plurality of) temperature points to monitor this regional Temperature Distribution situation, and temperature-averaging value and design temperature that system's when operation four measuring points monitor are consistent.
On the control interface of described touch-screen, 5 groups of display windows are set, respectively burner hearth, ignition under bed burner, rotary separator entrance, rotary separator outlet, the vertical leg of material returning valve and their corresponding set temperature window and monitor temperature window, also can further modify, dynamically show that boiler planar effect picture and action pane position put etc., displaying scene situation directly perceived makes things convenient for the workman to understand rapidly operation; Click corresponding 5 set temperature windows, enter heating curve the interface is set, can be respectively to 5 positions settings heating curve separately, the hop count of heating curve can increase or reduce as required, each set point can be divided into six sections design temperatures, and every section setting value comprises time value and temperature value; The baker process can show the temperature that each is regional on the interface after starting, and clicks drying out curve and the actual time dependent situation of measuring point temperature curve that each position can show setting, and the temperature value of interior four test points in zone.
Described baker will carry out power control, according to the power output of this regional Temperature Distribution situation control oven drying machine.Controlled quentity controlled variable is oil mass and air capacity, and oil mass is controlled by electric control valve, and air capacity is passed through VFC.Control algolithm adopts fuzzy PID method, and basic principle is that distributive value is the direct execution unit of temperature, and blower fan is regulated air output by Frequency Converter Control, and is corresponding with oil mass to guarantee air quantity.
There is the abnormal conditions warning function in described system, mainly prevents the internal system overtemperature.When temperature exceeding standard, system can reduce distributive value automatically, and adjusts corresponding with it air output.
The invention has the beneficial effects as follows:
A, based on the baker process automatic control system of PLC and touch-screen, realized the automatic collection of baker parameter and the centralized Control of baker process;
Manually use in B, the minimizing baker process, by temperature setting on touch-screen, can realize the operation control of long-range oil mass and air input;
Temperature control precision in c, the raising burner hearth guarantees the baker effect, guarantees the boiler quality, reduces and overhauls 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 models, produce good economic benefit and social benefit.
Description of drawings
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.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is done further disclosure.
Embodiment 1
Native system has adopted the fuzzy PID control program from adjusting of band, has just approached continuous control when the numerically controlled cycle is infinitesimal.The control algolithm of fuzzy is embedded in the design of PLC; and input and output element, electric prospection device, warning and display element be optimized selection: Programmable Logic Controller host CPU module is selected the XC3-24R-E type; analog output module selects XC-E2DA; read out instrument adopts 7 inches tangible control display screens of TH765-N, and temperature sensor is selected K type armoured thermocouple.
Design of Fuzzy PID Controller is for the control characteristics of fire box temperature, and the control of fire box temperature is realizing to oil mass by control valve mainly.While is for fear of the frequent movement of fire box temperature adjuster.When fire box temperature changes when little, the fire box temperature deviation does not participate in regulating to oil mass; When the fire box temperature deviation ratio is larger, just needs the fire box temperature deviation to participate in oil supply and regulate; Reduce control valve opening in limited time above on the fire box temperature, be lower than the lower control valve opening that increases in limited time in fire box temperature; If fire box temperature continues to descend, when being lower than lower prescribing a time limit, system produces to report to the police and provides prompting.
Accompanying drawing 2 adopts fuzzy tandem controlled circulation fluid bed furnace bore temperature, and interior ring is that tandem is controlled to oil mass, and tandem controlled circulation fluid bed furnace bore temperature control system is comprised of several parts such as fuzzy controller, executing agency, control object, temperature transmitters.The basic demand of control system makes furnace temperature by the certain procedures operation, comprises at the uniform velocity temperature-rise period and steady temperature control procedure.In temperature-rise period at the uniform velocity, control system is simple proportion control; In Regulation of Constant Temperature, the course of work of system's control is to be compared by the circulating fluidized bed boiler output quantity Y0 (S) of output quantity Y (S) the process temperature transmitter conversion of system and the specified rate R (S) in the adjuster, after produce deviation E (E=R (S)-Y0 (S)), send conditioning signal through fuzzy controller, enter the controller of interior ring, drive executing agency with submaster controller output quantity u, make to oil mass m and be stabilized in a certain numerical value, enter in the burner hearth, finish the adjusting work of recirculating fluidized bed fire box temperature, make it the fire box temperature that reaches constant, and allow up and down fluctuation in certain scope.
In the PLC program of accompanying drawing 3, the measured value of each temperature sensor is caught by the MOV instruction by the analog input module, deliver on the corresponding word serial displacement passage, the highest order (bit) of this displacement passage connects the data output of appointment, power one is to serial shift from low to high for SHL left shift instruction driving data under the effect of serial clock SCK, and data shift out by turn from this mouth; Front, low level is rear according to a high position for the data that are transmitted, and SCK whenever sends 16 pulses and just transmitted frame data (each passage), and every frame data are a word (word), i.e. 16bit.The complete frame data of the every driving of PLC are just delivered to new data currency on the word serial displacement passage with the MOV instruction, transmit to carry out a new frame.
When program was carried out, the fuzzy control module is calculated according to the drift gage of check the value and on-the-spot setting valve can calculate the control output quantity, and input module is arranged with the electric control valve that is sent to of 4-20mA, and controls the temperature of burner hearth by the size of control valve opening.
The above is not to be limitation of the present invention, and every technical solution of the present invention content that do not break away to any simple modification, equivalent variations and remodeling that above embodiment does, still belongs to the protection domain of technical solution of the present invention according to technical spirit of the present invention.
Claims (4)
1. smoke gas oven drying automatic control system, it is characterized in that: the temperature that records according to the thermocouple that is arranged in the burner hearth, become data signal by resume module, then the respective value by the preset temperature curve in the processing module compares, and by the controlled output quantity of fuzzy PID algorithm computing, regulated again the power stage of baker burner by output module output 4-20mA analog signals, realize temperature control in the boiler; Control system is take fire box temperature as control object, and by minute process control that control send the method for oil mass and air output to realize temperature, the control interface of touch-screen arranges baker groundwork zone.
2. smoke gas oven drying automatic control system according to claim 1, it is characterized in that: the groundwork zone of described baker is imported and exported for burner hearth, ignition under bed burner, rotary separator and vertical 5 zones of leg of material returning valve, each zone has 4 (or a plurality of) temperature points to monitor this regional Temperature Distribution situation, and temperature-averaging value and design temperature that system's when operation four measuring points monitor are consistent.
3. smoke gas oven drying automatic control system according to claim 1, it is characterized in that: 5 groups of display windows are set on the control interface of described touch-screen, are respectively burner hearth, ignition under bed burner, rotary separator entrance, rotary separator outlet, the vertical leg of material returning valve and their corresponding set temperature window and monitor temperature window; Click the relative set temperature window, enter heating curve the interface is set; The hop count of heating curve increases as required or reduces, and each set point is divided into six sections design temperatures, and every section setting value comprises time value and temperature value.
4. smoke gas oven drying automatic control system according to claim 1, it is characterized in that: there is the abnormal conditions warning function in described system.
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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| Publication Number | Publication Date |
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| CN103017158A true CN103017158A (en) | 2013-04-03 |
| CN103017158B CN103017158B (en) | 2016-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
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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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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107179685A (en) * | 2016-03-09 | 2017-09-19 | 中国科学院沈阳自动化研究所 | A kind of Staged cotrol implementation method suitable for Studies of Multi-variable Model Predictive Control |
| 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 (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101117019A (en) * | 2006-07-31 | 2008-02-06 | 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 |
| 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 |
| 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 |
| 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 |
-
2012
- 2012-12-28 CN CN201210580021.6A patent/CN103017158B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101117019A (en) * | 2006-07-31 | 2008-02-06 | 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 |
| 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 |
| 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 |
| 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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107179685A (en) * | 2016-03-09 | 2017-09-19 | 中国科学院沈阳自动化研究所 | A kind of Staged cotrol implementation method suitable for Studies of Multi-variable Model Predictive Control |
| 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 |
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| Publication number | Publication date |
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| CN103017158B (en) | 2016-01-06 |
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Granted publication date: 20160106 |