CN201293307Y - General type boiler energy-conserving emission reduction intelligent control apparatus - Google Patents
General type boiler energy-conserving emission reduction intelligent control apparatus Download PDFInfo
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- CN201293307Y CN201293307Y CNU2008201758914U CN200820175891U CN201293307Y CN 201293307 Y CN201293307 Y CN 201293307Y CN U2008201758914 U CNU2008201758914 U CN U2008201758914U CN 200820175891 U CN200820175891 U CN 200820175891U CN 201293307 Y CN201293307 Y CN 201293307Y
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Abstract
The utility model relates to a general type boiler energy saving emission reduction intelligent controlling means, which belongs to the computer automatization control technology and boiler energy saving emission reduction intelligent control technology field. The intelligent controlling means comprises a embedded computer, it is characterized in also comprising a signal sensing system, a PLC control module, a touch screen and a communication bus; the signal sensing system is connected with the communication terminal of the embedded computer by the communication bus; the touch screen is connected with the data terminal of the embedded computer and the PLC control module; and the output terminal of the embedded computer is connected with the PLC control module by the communication bus. The utility model achieves the advantages of flexible controlled, good compatibility, excellent control robustness, operation stability and control generality; is easy to implement.
Description
Technical field
The utility model belongs to technology and computer automation control technology and boiler energy-saving emission-reduction intelligent control technology, particularly a kind of universal boiler energy-saving emission-reduction intelligence controlling device.
Background technology
At present, there are numerous middle-size and small-size industrial coal chain row boilers in China, employing all be low-level relay simple control mode, caused severe energy waste and environmental issue, Boiler Steam poor quality simultaneously, 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, and 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.
The utility model content
The purpose of this utility model is to provide a kind of general boiler energy-saving emission-reduction intelligence controlling device, and control flexibly, and is compatible strong, has good control robustness, operation stability and control versatility, easy to implement.
Universal boiler energy-saving emission-reduction intelligence controlling device described in the utility model, comprise embedded computer, it is characterized in that: also comprise signal sensing system, PLC control module, touch-screen and communication bus, signal sensing system connects the communication ends of embedded computer by communication bus, touch-screen connects the data terminal and the PLC control module of embedded computer, and the output of embedded computer connects the PLC control module by communication bus.
Signal sensing system adopts the special signal modulate circuit, has the ability of compatible various on-the-spot input signal standards, and possesses lightning protection and noiseproof feature.The PLC control module realizes the whole in control control and element loop output control of boiler, has the height reliability and stability.Touch-screen provides parameter adjustment and Man Machine Interface.Embedded computer is connected with other functional module of system by communication bus, obtains service data and carries out on-line identification, realizes the intelligent adaptive adjustment of control algolithm.
In the utility model:
Described signal sensing system comprises drum liquid level gauge, flowmeter, blast transmitter and pressure transmitter, the drum liquid level gauge is arranged in the boiler-steam dome, flowmeter is arranged on the inlet pipeline of boiler-steam dome, and the blast transmitter is arranged on burner hearth inside, and pressure transmitter is located in the drum.
Described PLC control module comprises boiler drum level control module, combustion chamber draft control module, burning automatic control unit and sequential control unit.
Described boiler drum level control module comprises PLC, frequency converter and water pump, and the output of PLC connects the control end of frequency converter, and the output of frequency converter connects water pump.By the control of boiler drum level control module realization to the water yield on the water pump.
Described combustion chamber draft control module comprises PLC, frequency converter and air-introduced machine, and the output of PLC connects the control end of frequency converter, and the output of frequency converter connects air-introduced machine.By the control of combustion chamber draft control module realization to boiler furnace air inducing amount.
Described burning automatic control unit is made up of PLC, frequency converter, air blast and conveying motor, and the output of PLC connects the control end of a frequency converter respectively, and the output of one of them frequency converter connects air blast, and another output connects carries motor.Form fuel control unit and air-supply control module, the burning automatic control unit is realized the control to the fuel input quantity and the blow rate required.
Described sequential control unit comprises PLC and button, and the input of PLC is provided with button.The essence of sequential control unit is exactly the manual control and the control automatically of switching boiler drum level control module, combustion chamber draft control module and burning automatic control unit.When the boot sequence control module, steam generator system is according to the auto-programming operation of PLC or embedded computer.
Described PLC control module is provided with indicator lamp and alarm, and indicator lamp and alarm are arranged on the output of PLC control module.Can indicate the duty of boiler drum level control module, combustion chamber draft control module, burning automatic control unit and sequential control unit respectively.When breaking down, give the alarm.
During use, finish signal on-line identification by the embedded computer that connects by the on-scene communication bus, embedded computer is provided with Expert Control Rules storehouse online adaptive and optimizes and revises, and system's operation is undertaken by color touch screen man-machine interface.Because system possesses signal on-line identification and Expert Control Rules storehouse online adaptive is optimized and revised function, so system possesses good intelligent automation control characteristic, effectively realized the energy-saving and emission-reduction Based Intelligent Control of boiler, and well suited in the various type of furnaces.
The utility model adopts embedded computer technology, it is little to have power consumption, exempt from fan duty, the operation stability and the reliability of system have effectively been improved, have that implementation cost is low, the energy-saving and water-saving effect of economizing on coal obviously, control complete function, alarm parameters characteristics complete, safe and reliable to operation, be suitable for automatic improving at the various middle-size and small-size industrial coal chain row boiler of 2～35t/h.The actual running results shows, have good control robustness and intelligent control characteristic, use in the boiler running process after this system carries out automatic improving, water level control is steady in a long-term, and steam quality improves a lot at+10mm, and the power savings of economizing on coal is obvious, test by reality, boiler fuel savings 10.26%, economize on electricity 23.98% has considerable energy-saving and emission-reduction benefit.
The beneficial effect that the universal boiler energy-saving emission-reduction intelligence controlling device of the utility model is had is:
It is compatible strong to have the signal input and output, control algolithm has the Based Intelligent Control characteristic of online self-optimizing, have good control robustness, operation stability and control versatility, system adopts the color touch screen to operate, has friendly interface, be simple and easy to the characteristics of usefulness, be applicable to the energy-saving and emission-reduction automation control of various model boilers.
Description of drawings
Fig. 1 is the functional-block diagram of the utility model embodiment.
Fig. 2 is the functional-block diagram of the boiler drum level control module among the utility model embodiment.
Fig. 3 is the functional-block diagram of the combustion chamber draft control module among the utility model embodiment.
Fig. 4 is the functional-block diagram of the burning automatic control unit among the utility model embodiment.
Fig. 5 is the indicator lamp among the utility model embodiment and the circuit theory diagrams of alarm.
Among the figure: U1, PLC chip KM1-KM5, relay J 1-J4, J5-1, J5-2, contact L1-L8, indicator lamp L9 flash lamp SP1, alarm.
The specific embodiment
Below in conjunction with the embodiment accompanying drawing the utility model is described further.
As shown in Figure 1, universal boiler energy-saving emission-reduction intelligence controlling device mainly is made up of embedded computer, signal sensing system, PLC control module, touch-screen and communication bus.Signal sensing system is by the communication ends of communication bus connection embedded computer, and touch-screen connects the data terminal and the PLC control module of embedded computer, and the output of embedded computer connects the PLC control module by communication bus.The PLC control module comprises boiler drum level control module, combustion chamber draft control module, burning automatic control unit and sequential control unit.
Signal sensing system comprises drum liquid level gauge, flowmeter, blast transmitter and pressure transmitter, be equipped with relevant converter again, the drum liquid level gauge is arranged in the boiler-steam dome, flowmeter is arranged on the inlet pipeline of boiler-steam dome, the blast transmitter is arranged on burner hearth inside, and pressure transmitter is located in the drum.Signal sensing system adopts the special signal modulate circuit, has the ability of compatible various on-the-spot input signal standards, and possesses lightning protection and noiseproof feature.The PLC control module realizes the whole in control control and element loop output control of boiler, has the height reliability and stability.Touch-screen provides parameter adjustment and Man Machine Interface.Embedded computer is connected with other functional module of system by communication bus, obtains service data and carries out on-line identification, realizes the intelligent adaptive adjustment of control algolithm.Described sequential control unit comprises PLC and button, and the input of PLC is provided with button.The essence of sequential control unit is exactly the manual control and the control automatically of switching boiler drum level control module, combustion chamber draft control module and burning automatic control unit.When the boot sequence control module, steam generator system is according to the auto-programming operation of PLC or embedded computer.
As shown in Figure 2, the boiler drum level control module comprises PLC, frequency converter and water pump, and the output of PLC connects the control end of frequency converter, and the output of frequency converter connects water pump.
This unit is gathered water level signal and is gathered the doublepulse control system that steam flow is formed by the drum flowmeter by liquid level gauge, with steam flow as the feedforward amount, with the feedforward of water level signal as feedback quantity---feedback control system.By the control of boiler drum level control module realization to the water yield on the water pump.This control scheme has solved in the industrial production, because load variations is big, " false liquid level " phenomenon that causes keeps water level system automatic stabilisation near setting value.The liquid level gauge excursion :-220～+ 220, the change of setting value can be by being provided with given setting of water level in the picture on the change touch-screen.Steam flow and boiler drum water level are put, and promptly can show by the measurement picture on touch-screen, also can show on the schedule of quantities of other switch boards.
As shown in Figure 3, the combustion chamber draft control module comprises PLC, frequency converter and air-introduced machine, and the output of PLC connects the control end of frequency converter, and the output of frequency converter connects air-introduced machine.
By the control of combustion chamber draft control module realization to boiler furnace air inducing amount.The blast transmitter be combustion chamber draft transmitter excursion :-20pa～+ 250pa.The change of setting value can be provided with that negative pressure is given in the picture is provided with by touch-screen.The combustion chamber draft value can show at the measurement picture of touch-screen, also can show on the schedule of quantities of switch board.
As shown in Figure 4, the burning automatic control unit comprises fuel control unit and air-supply control module, form by PLC, frequency converter, air blast and conveying motor respectively, the output of PLC connects the control end of a frequency converter respectively, the output of one of them frequency converter connects air blast, and another output connects carries motor.
The burning automatic control unit is realized the control to the fuel input quantity and the blow rate required.Steam pressure setting value can be provided with in given in the vapour pressure that is provided with in the picture of touch-screen, when big variation takes place in coal, can suitably revise the wind ratio by the control air blast according to burner hearth internal combustion situation, suitably revise the coal ratio by the conveying motor of fire grate, make burning reach optimal combustion state, the modification of wind ratio, coal ratio is also in being provided with picture.
As shown in Figure 5, the PLC control module is provided with indicator lamp L1-L9 and alarm SP1.The output of PLC chip U1 is provided with relay K M1-KM4, and the other branch of the contact J-J4 of relay K M1-KM4 is connected with indicator lamp L5-L8, is used to indicate fire grate operation, air blast operation, draws phoenix operation and water pump operation state.
The output of PLC chip U1 also is provided with indicator lamp L1-L4 and relay K M5, and the contact J5-1 of KM5 connects with flash lamp L9, and contact J5-2 connects with alarm.Indicator lamp L1-L4 indicate respectively burning automatically, furnace pressure automatically, go up the automatic and chain indication of water.Relay K M5 control flash lamp L9 and alarm SP1 realize integrated alarm.
Operation principle and process: on-the-spot various operating modes of boiler operatiopn and the change of running status process on-site signal sensor-based system are sent and are transferred in the signal condition system; after modulation treatment such as over-voltage over-current protection, hardware filtering, hardware anti-interference processing; the input embedded computer is gathered; handle by collection and identification real time data; in conjunction with comparison embedded computer in-house experts knowledge base; handle through fuzzy adaptive searching optimal algorithm; the result that processing is optimized in the control law storehouse, always is in optimal operational condition with the assurance system with real-time update.These rule bases of optimizing are sent in the PLC control module by communication bus.Utilize these self-optimizing control rules, regulate the calculation process of algorithm through the residual quantity of PLC control module in conjunction with fuzzy rule control and regulation algorithm, to generate the coal amount and regulate output, air quantity and regulate output, furnace pressure and regulate output, go up water and regulate output and safety, guarantee that the fully-automatic intelligent of steam generator system is regulated control along control output.Whole device is realized the response of input and output by card lamp button and touch screen human-computer interface interface, thereby reaches the function that the boiler stabilizing energy-saving reduces discharging intelligent optimization control.
Claims (7)
1, a kind of universal boiler energy-saving emission-reduction intelligence controlling device, comprise embedded computer, it is characterized in that also comprising signal sensing system, PLC control module, touch-screen and communication bus, signal sensing system connects the communication ends of embedded computer by communication bus, touch-screen connects the data terminal and the PLC control module of embedded computer, and the output of embedded computer connects the PLC control module by communication bus.
2, universal boiler energy-saving emission-reduction intelligence controlling device according to claim 1, it is characterized in that signal sensing system comprises drum liquid level gauge, flowmeter, blast transmitter and pressure transmitter, the drum liquid level gauge is arranged in the boiler-steam dome, flowmeter is arranged on the inlet pipeline of boiler-steam dome, the blast transmitter is arranged on burner hearth inside, and pressure transmitter is located in the drum.
3, universal boiler energy-saving emission-reduction intelligence controlling device according to claim 1 and 2 is characterized in that the PLC control module comprises boiler drum level control module, combustion chamber draft control module, burning automatic control unit and sequential control unit.
4, universal boiler energy-saving emission-reduction intelligence controlling device according to claim 3 is characterized in that the boiler drum level control module comprises PLC, frequency converter and water pump, and the output of PLC connects the control end of frequency converter, and the output of frequency converter connects water pump.
5, universal boiler energy-saving emission-reduction intelligence controlling device according to claim 3 is characterized in that the combustion chamber draft control module comprises PLC, frequency converter and air-introduced machine, and the output of PLC connects the control end of frequency converter, and the output of frequency converter connects air-introduced machine.
6, universal boiler energy-saving emission-reduction intelligence controlling device according to claim 3, the automatic control unit that it is characterized in that burning is made up of PLC, frequency converter, air blast and conveying motor, the output of PLC connects the control end of a frequency converter respectively, the output of one of them frequency converter connects air blast, and another output connects carries motor.
7, universal boiler energy-saving emission-reduction intelligence controlling device according to claim 3 is characterized in that the sequential control unit comprises PLC and button, and the input of PLC is provided with button.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201758914U CN201293307Y (en) | 2007-11-06 | 2008-11-01 | General type boiler energy-conserving emission reduction intelligent control apparatus |
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| CN200720029550.1 | 2007-11-06 | ||
| CN200720029550 | 2007-11-06 | ||
| CNU2008201758914U CN201293307Y (en) | 2007-11-06 | 2008-11-01 | General type boiler energy-conserving emission reduction intelligent control apparatus |
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| CN201293307Y true CN201293307Y (en) | 2009-08-19 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101634459A (en) * | 2009-08-24 | 2010-01-27 | 陶晓鹏 | Thermal power generation boiler intelligent combustion optimizing system and realizing method thereof |
| CN101900316A (en) * | 2010-08-12 | 2010-12-01 | 广州迪森热能技术股份有限公司 | Biomass boiler control system |
| CN102023595A (en) * | 2010-12-16 | 2011-04-20 | 温州安信科技有限公司 | Automatic control and energy-saving system of boiler |
| CN102721288A (en) * | 2012-07-05 | 2012-10-10 | 河北新烨工程技术有限公司 | High-efficiency intelligentized heating furnace control method |
| CN103148472A (en) * | 2012-03-23 | 2013-06-12 | 郑州轻工业学院 | Control system and control method for biomass boiler combustion |
| CN106642060A (en) * | 2016-12-27 | 2017-05-10 | 重庆智神科技有限公司 | Display device and boiler control system |
| CN111503616A (en) * | 2020-04-29 | 2020-08-07 | 贵州理工学院 | Boiling boiler monitoring system based on P L C and configuration software |
-
2008
- 2008-11-01 CN CNU2008201758914U patent/CN201293307Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101634459A (en) * | 2009-08-24 | 2010-01-27 | 陶晓鹏 | Thermal power generation boiler intelligent combustion optimizing system and realizing method thereof |
| CN101900316A (en) * | 2010-08-12 | 2010-12-01 | 广州迪森热能技术股份有限公司 | Biomass boiler control system |
| CN101900316B (en) * | 2010-08-12 | 2012-01-25 | 广州迪森热能技术股份有限公司 | Biomass boiler control system |
| CN102023595A (en) * | 2010-12-16 | 2011-04-20 | 温州安信科技有限公司 | Automatic control and energy-saving system of boiler |
| CN103148472A (en) * | 2012-03-23 | 2013-06-12 | 郑州轻工业学院 | Control system and control method for biomass boiler combustion |
| CN103148472B (en) * | 2012-03-23 | 2014-08-27 | 郑州轻工业学院 | Control system and control method for biomass boiler combustion |
| CN102721288A (en) * | 2012-07-05 | 2012-10-10 | 河北新烨工程技术有限公司 | High-efficiency intelligentized heating furnace control method |
| CN102721288B (en) * | 2012-07-05 | 2014-12-31 | 河北新烨工程技术有限公司 | High-efficiency intelligentized heating furnace control method |
| CN106642060A (en) * | 2016-12-27 | 2017-05-10 | 重庆智神科技有限公司 | Display device and boiler control system |
| CN111503616A (en) * | 2020-04-29 | 2020-08-07 | 贵州理工学院 | Boiling boiler monitoring system based on P L C and configuration software |
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Legal Events
| Date | Code | Title | Description |
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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: 20090819 Termination date: 20131101 |