CN201072238Y - Stable energy-saving emission-reducing intelligent optimizing control system for middle and small industrial boiler - Google Patents
Stable energy-saving emission-reducing intelligent optimizing control system for middle and small industrial boiler Download PDFInfo
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- CN201072238Y CN201072238Y CNU2007200970272U CN200720097027U CN201072238Y CN 201072238 Y CN201072238 Y CN 201072238Y CN U2007200970272 U CNU2007200970272 U CN U2007200970272U CN 200720097027 U CN200720097027 U CN 200720097027U CN 201072238 Y CN201072238 Y CN 201072238Y
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Abstract
The utility model relates to a stable intelligent and optimal control system that can save energy and reduce emission for middle and small industrial boiler. A computer is connected with an embedded PLC controller and a data connecting system module that is connected with various signal converter systems connected to a control target. The various signal converter systems are also connected with the PLC controller that is connected with an actuator; a manual operation system is connected with the computer and the PLC controller. The utility model is characterized in that: the data is collected by the PLC, exchanged between a field communication and an embedded control computer and on-line identified to form a knowledge base through neural network self-learning and the best control strategy generated based on the knowledge base and having self-optimizing feature is sent to the PLC; control signal and safety warning signal are respectively output according to safety control rules and specific control algorithm to realize the optimal combustion and safety control for boilers. The system algorithm has excellent on-line self-optimizing feature and impertinence control property, thereby effectively realizing stable, energy saving and emission reducing, intelligent and optimal control for boilers.
Description
Technical field
The invention belongs to the control technology of the energy-saving and emission-reduction intelligent optimization of the middle-size and small-size industrial coal chain row of automatic technology boiler.Be particularly related to a kind of middle-size and small-size Industrial Boiler stabilizing energy-saving and reduce discharging intelligent optimizing control system.
Background technology
China exists numerous middle-size and small-size industrial coal chain row boilers to adopt low-level relay simple control mode at present, has caused severe energy waste and environmental issue, while Boiler Steam poor quality, boiler operatiopn poor stability; There are more than 50 ten thousand Industrial Boilers in China, great majority are the coal-fired chain row of little tonnage boiler, because the boiler tonnage is little, control appliance is simple and crude, add and use the coal complexity, operating mode also differs greatly, this situation has caused the automation of middle-size and small-size industrial coal chain row boiler both can't implement expensive general DCS control system, also can't carry out the customization transformation, therefore at this situation, we have developed a kind of universal boiler energy-saving emission-reduction intelligent optimization control, this system adopts the PLC control technology, embedded control system, field bus communication, the Flexible Control technology, combine from optimizing intelligent algorithm and converter technique, it is low to have implementation cost, the energy-saving and water-saving effect of economizing on coal is obvious, the control complete function, alarm parameters is complete, characteristics safe and reliable to operation, be suitable for automatic improving, and obtained very ten-strike in the transformation project of carrying out many middle-size and small-size industrial coal chains row boilers in recent years in China at the various middle-size and small-size industrial coal chain row boiler of 2～35t/h.
Summary of the invention
The object of the present invention is to provide a kind of general middle-size and small-size industrial coal chain row boiler energy-saving emission-reduction intelligent optimization control.
Concrete scheme is that a kind of middle-size and small-size Industrial Boiler stabilizing energy-saving reduces discharging intelligent optimizing control system: it is characterized in that: the PLC control technology system by main frame and embedding forms, and computer is connected with embedding PLC controller; Computer connects the data collecting system module, the data collecting system module be connected the various signal transmitting device system that controls target and be connected.Various signal transmitting device system also connects the PLC controller; The PLC controller is connected the card display system with various signal transmitting device system; The PLC controller connects actuator, and actuator connects the control destination apparatus; Manual operator connects computer and PLC controller.
Its signal transmitting device system is made up of steam pressure transmitter, water level transmitter, steam flow transmitter, last discharge transmitter, fire box temperature transmitter, exhaust gas temperature transmitter, combustion chamber draft transmitter, blast pressure transmitter; Its actuator is: be connected the coal amount controller on the boiler grate, be connected the blast volume controller on the air blast, be connected the negative pressure controller on the air-introduced machine, be connected the water level controller on the water pump.
The characteristics of native system are to carry out the service data collection by PLC, carry out exchanges data by on-scene communication and embedded Control computer, embedded computer is responsible for the on-line identification to data, the knowledge base that self study by neutral net forms, and the optimum controling strategy that generation has from the optimizing characteristic according to knowledge base sends to PLC, receive after the control strategy, according to security control rule and the defeated respectively coal output of concrete control algolithm, the blow rate required, air inducing amount and last discharge, and export various switch controlling signals and security alarm signal, realized the best combustion and the security control of boiler.This system algorithm has good online self-optimizing characteristic and control crudity, has realized that effectively the stabilizing energy-saving of boiler reduces discharging intelligent optimization control.
Description of drawings
Fig. 1 is that system forms schematic diagram
Fig. 2 is system's control structure schematic diagram
The specific embodiment
Middle-size and small-size Industrial Boiler stabilizing energy-saving as shown in Figure 1 reduces discharging intelligent optimizing control system: the PLC control technology system by main frame and embedding forms, and computer is connected with embedding PLC controller; Computer connects the data collecting system module, the data collecting system module be connected the various signal transmitting device system that controls target and be connected.Various signal transmitting device system also connects the PLC controller; The PLC controller is connected the card display system with various signal transmitting device system; The PLC controller connects actuator, and actuator connects the control destination apparatus; Manual operator connects computer and PLC controller.
Form by steam pressure transmitter, water level transmitter, steam flow transmitter, last discharge transmitter, fire box temperature transmitter, exhaust gas temperature transmitter, combustion chamber draft transmitter, blast pressure transmitter from its signal transmitting device system shown in Figure 2; Its actuator is: be connected the coal amount controller on the boiler grate, be connected the blast volume controller on the air blast, be connected the negative pressure controller on the air-introduced machine, be connected the water level controller on the water pump.
The present invention realizes like this, by sensor to the steam pressure of boiler running process, water level, steam flow, go up discharge, fire box temperature, exhaust gas temperature, combustion chamber draft, blast pressure and carry out on-line monitoring, and actual operation parameters is carried out the self study of fuzzy neural network, compared in the self study knowledge control strategy storehouse of identification result and fuzzy neural network, try to achieve current optimum controling strategy, this algorithm has from the optimizing intelligent characteristic, has good Algorithm Convergence.This control technology has been avoided complicated fire box temperature field model reconstruction, has reduced the modeling difficulty and the programming amount of software, can reduce the performance requirement to core controller simultaneously, reduces system's implementation cost.This system just can easily adapt to various coal, the type of furnace and operating condition by simple replacing expert policy library.The application of Fuzzy Neural-network Control algorithm can reduce the quantity of on-line identification sensor, makes this system more be applicable to miniature boiler.
In native system, adopt the on-scene communication technology, and in communications packets, use authentication and reliability calibration technology, reduced wiring than conventional DCS, reduce the fault point, reduce cost, improve reliability.Adopt the embedded computer of no fan design, also further reduced system cost, improve system reliability.System guarantees the optimization of burning by the rational proportion to coal amount, the blow rate required, air inducing amount, avoids waste; By the control of the last water yield, realize the steady adjusting of water level; System also provides automatic pollution discharge control, realizes the water saving blowdown under the prerequisite of assurance water quality.Add the employing frequency conversion control technique, system saving electricity is obvious.
The actual running results shows that this control system has good control crudity, uses in the boiler running process after this system carries out automatic improving, and steam quality improves a lot, and the power savings of economizing on coal is obvious, and water level control is steady in a long-term at ± 10mm.
This control system has following functions:
1. eight road analog acquisition amounts: steam pressure, water level, steam flow, upper discharge, fire box temperature, Exhaust gas temperature, combustion chamber draft, blast pressure.
2. four tunnel controlled quentity controlled variables output: air blast, fire grate, air inducing, Shang Shui.
3. four road hands are controlled system: air blast, fire grate, air inducing, Shang Shui.
4. four road start-stops control: air blast, fire grate, air inducing, Shang Shui.
5. the chain control of four pipeline equipment failure safes: air blast fault, grate failure, air inducing fault, water pump fault.
6. the self study of maximum 1024 groups of knowledge fuzzy neural networks.
7. four loops operation control signal output: air blast, fire grate, air inducing, Shang Shui.
8. three loop many momentums expert control strategies are regulated: burning is regulated, negative pressure is regulated, water level is regulated.
9. the automatic unperturbed of three loop hands switches: burning is regulated, negative pressure is regulated, water level is regulated.
10. three loop hand auto state indications: burning is regulated, negative pressure is regulated, water level is regulated.
11. outer fault blowing out signal input terminal.
12. software remote auto program opens stove control.
13. software remote auto program blowing out control
14. the multiple warning processing of four tunnel operation collection capacities: high warning, height are reported to the police, are hanged down and report to the police, extremely hang down warning.
15. one tunnel operation warning buzzing output.
The flash of light output 16. one tunnel operation is reported to the police.
17. one road fault alarm buzzing output.
18. one road fault alarm flash of light output.
19. one road integrated alarm output.
20. the chain control of boiler operatiopn comprehensive safety.
21. ann silence function.
22. the blowing out function is forbidden in safety valve pressure testing and the blowdown of water level meter.
23. automatic pollution discharge interface.
24. operation/inspecting state handoff functionality.
25. security of operation situation self check.
26. the chain state deixis of boiler safety.
27. boiler operatiopn state deixis.
28. real-time clock function.
29. touch panel communication interface.
30. DCS communication interface.
31. communications status handoff functionality.
32. damping filtering and unperturbed handoff technique.
33. double control strategy is optional arbitrarily.
34. the parameter power down keeps function automatically.
35. the longest historical data base that reaches 30 years.
Claims (2)
1. one kind middle-size and small-size Industrial Boiler stabilizing energy-saving reduces discharging intelligent optimizing control system: it is characterized in that: the PLC control technology system by main frame and embedding forms, and computer is connected with embedding PLC controller; Computer connects the data collecting system module, the data collecting system module be connected the various signal transmitting device system that controls target and be connected, various signal transmitting device system also connects the PLC controller; The PLC controller is connected the card display system with various signal transmitting device system; The PLC controller connects actuator, and actuator connects the control destination apparatus; Manual operator connects computer and PLC controller.
2. middle-size and small-size Industrial Boiler stabilizing energy-saving according to claim 1 reduces discharging intelligent optimizing control system: it is characterized in that: its signal transmitting device system is made up of steam pressure transmitter, water level transmitter, steam flow transmitter, last discharge transmitter, fire box temperature transmitter, exhaust gas temperature transmitter, combustion chamber draft transmitter, blast pressure transmitter; Its actuator is: be connected the coal amount controller on the boiler grate, be connected the blast volume controller on the air blast, be connected the negative pressure controller on the air-introduced machine, be connected the water level controller on the water pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200970272U CN201072238Y (en) | 2007-08-09 | 2007-08-09 | Stable energy-saving emission-reducing intelligent optimizing control system for middle and small industrial boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200970272U CN201072238Y (en) | 2007-08-09 | 2007-08-09 | Stable energy-saving emission-reducing intelligent optimizing control system for middle and small industrial boiler |
Publications (1)
| Publication Number | Publication Date |
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| CN201072238Y true CN201072238Y (en) | 2008-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2007200970272U Expired - Fee Related CN201072238Y (en) | 2007-08-09 | 2007-08-09 | Stable energy-saving emission-reducing intelligent optimizing control system for middle and small industrial boiler |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101859098A (en) * | 2010-06-23 | 2010-10-13 | 华北电力大学 | Boiler combustion rate self-optimizing method based on PID control policy |
| CN102353073A (en) * | 2011-08-02 | 2012-02-15 | 威海宝源电气有限公司 | Automatic control method for burner type industrial boiler and device for automatic control method |
| CN102566565A (en) * | 2011-12-23 | 2012-07-11 | 浙江万可电气设备有限公司 | Fast overhauling device for valve control system |
| CN108036300A (en) * | 2018-01-08 | 2018-05-15 | 中国恩菲工程技术有限公司 | Intelligent waste heat boiler information integration control system |
| CN109114560A (en) * | 2018-10-26 | 2019-01-01 | 江西中船航海仪器有限公司 | A kind of dual fuel burner monitoring system |
| CN111396922A (en) * | 2020-03-20 | 2020-07-10 | 辽宁汇德电气有限公司 | General energy-saving control system for grate firing boiler |
-
2007
- 2007-08-09 CN CNU2007200970272U patent/CN201072238Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101859098A (en) * | 2010-06-23 | 2010-10-13 | 华北电力大学 | Boiler combustion rate self-optimizing method based on PID control policy |
| CN102353073A (en) * | 2011-08-02 | 2012-02-15 | 威海宝源电气有限公司 | Automatic control method for burner type industrial boiler and device for automatic control method |
| CN102566565A (en) * | 2011-12-23 | 2012-07-11 | 浙江万可电气设备有限公司 | Fast overhauling device for valve control system |
| CN102566565B (en) * | 2011-12-23 | 2013-07-10 | 浙江万可电气设备有限公司 | Fast overhauling device for valve control system |
| CN108036300A (en) * | 2018-01-08 | 2018-05-15 | 中国恩菲工程技术有限公司 | Intelligent waste heat boiler information integration control system |
| CN109114560A (en) * | 2018-10-26 | 2019-01-01 | 江西中船航海仪器有限公司 | A kind of dual fuel burner monitoring system |
| CN111396922A (en) * | 2020-03-20 | 2020-07-10 | 辽宁汇德电气有限公司 | General energy-saving control system for grate firing boiler |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080611 Termination date: 20110809 |