CN100487313C - Monitoring device for flame combustion situation - Google Patents
Monitoring device for flame combustion situation Download PDFInfo
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- CN100487313C CN100487313C CNB2007100216186A CN200710021618A CN100487313C CN 100487313 C CN100487313 C CN 100487313C CN B2007100216186 A CNB2007100216186 A CN B2007100216186A CN 200710021618 A CN200710021618 A CN 200710021618A CN 100487313 C CN100487313 C CN 100487313C
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Abstract
The flame burning situation monitoring device is a flame monitoring unit used in kinds of fuel, coal and gas fired boiler. The flame sensor (102) senses the flame (101) signal. The fan-out of the flame sensor connects to the input end of the probe signal processing circuit (103) of which the fan-out connects to the input end of the programmable filtering module (201) of the flame amplifier (2). The first input ends (PAD) of the programmable filtering module, amplifier module (202) and log transformation module (203), central processing module (205) ordinal-sequent connect. The first input ends (PAD) of the central processing module also connects to the voltage testing module (204) and its fan-out (PA) attaches to the display module (207). The second fan-out (SCI) of the central processing module connects to the communication module (208) and the third fan-out (PWM) attaches to the output module (206). It expresses the flame burning situation and current by quantification which makes sure the boiler function continually, safely and steadily.
Description
Technical field
The invention provides a kind of flame detector system that is used for various fuel oils, fire coal, gas fired-boiler, specifically a kind of intelligent flame checkout gear the present invention relates to the technical field of electronic measurement and control.
Background technology
In the large electric power plant unit, in order to guarantee boiler safety, operation reposefully, must carry out real time monitoring to the flame combustion situation of boiler, so that fuel control unit interlocking with boiler, stop the fuel supply when guaranteeing boiler extinguishment, prevent that inflammable substance from building up in burner hearth or pipeline, detonation takes place even cause the bursting of boilers.
The present domestic visible light formula flame detecting device that mostly adopts, but in long-term application process, find, fiery situation of difficult often appears seeing in this fire inspection, analyze its reason, mainly be that the Hei Long district of flame can be elongated when using some coal dusts relatively more inferior or now a lot of power plant often to use the multifuel combustion coal, so visible pass fire is inspected line and has often been concentrated on Hei Long district and initial combustion district part, flame intensity weakens greatly, loses fiery phenomenon; The flame detector sight line is passed through or near the Hei Long district, when then inactive when burner and other burner in the burner hearth continued the operation burning, signal strength signal intensity had increased than original on the contrary, and phenomenon has just taken place to steal a glance at for this.
Summary of the invention
Technical problem: the present invention is directed to the deficiencies in the prior art and defective, provide a kind of and can solve the monitoring device for flame combustion situation that loses fiery phenomenon, smooth combustion and security, good economy performance effectively.
Technical scheme: the present invention be by the radiation intensity of the flicker frequency of utilizing flame and light comprehensively judge flame to have that it's too late strong and weak.Because optical phenomenon can appear loseing in visible light, so flame-detecting probe adopts phosphatization potassium or vulcanized lead sensor to detect ultraviolet ray or infrared ray.The compatible two kinds of flame-detecting probes of flame amplifier, and can discern differentiation automatically, and adopt the binary channels design, fully independently handle the signal that the two-way flame probe is sent here, the actual value that can show flame, and can select 0 to 10 volt of voltage range and 4 to 20 milliamperes of outputs of current range.
The present invention specifically comprises flame-detecting probe, flame amplifier two parts, described flame-detecting probe comprises flame sensor and probe signal treatment circuit, the signal of the sensing flame of flame sensor, the output of flame sensor is connected with the input of probe signal treatment circuit, and the input of the programmable filter module in the output of probe signal treatment circuit and the flame amplifier is connected; The first input end of programmable filter module, amplification module, logarithm modular converter, central processing module is connected in series in proper order, the first input end of central processing module also is connected with voltage detection module, first output of central processing module connects display module, second output of central processing module connects communication module, and the 3rd output of central processing module connects output module.
Described flame sensor is phosphatization potassium or vulcanized lead sensor.In the described flame amplifier, " INVA " pin of filter circuit " MF10CCWM " connects the output of probe signal treatment circuit in the described programmable filter module, " N/AP/HPB " pin of filter circuit " MF10CCWM " connects " RfbA " pin of amplifying circuit " AD7528 " in the amplification module, " BPB " pin in the filter circuit " MF10CCWM " links to each other with " INVB " pin, constitutes programmable bandpass filter.
Described programmable filtration module comprises general integrated two-way switch capacitive filter MF10CCWM and corresponding auxiliary circuit, and input connects the flame detector probe output, and output connects the amplification module input;
Described voltage detection module input connects the voltage detecting port of each module, output connects the PAD mouth of central processing module, is used for the duty of each module of real-time detecting system, occurs when unusual, warning makes mistakes, and cuts off the working power of this part in order to avoid further damage circuit;
Connected mode of the present invention is specially:
Described flame sensor and probe signal treatment circuit are integrated on circuit board of flame detector probe; Programmable filtration module, amplification module, the logarithm modular converter, central processing module, voltage detection module, communication module, display module, output module are integrated on the circuit board of flame amplifier; The flame amplifier is connected by cable with flame detector probe.
Working method of the present invention is as follows:
1) optical signal that sends of flame source reaches the flame sensor by dustproof eyeglass or optical fiber;
2) the flame sensor is finished opto-electronic conversion;
3) the probe signal treatment circuit carries out conversion process to the intensity and the frequency signal of flame;
4) this signal reaches the flame amplifier by cable;
5) the flame amplifier is with the signal amplification filtering, and central processing module is handled;
6) show output and the corresponding to analog signals of flame intensity by output module.
Beneficial effect: the present invention can reflect current flame burning situation immediately accurately, avoid loseing fire and stolen a glance at phenomenon, intelligentized parameter management software can meet the parameter of the present situation according to the automatic adjustment of different combustion positions most, by quantizing to express flame combustion degree and state, guarantee that boiler safely and steadily runs continuously.Boiler safety, operation have reposefully been guaranteed, flame combustion situation to boiler carries out real time monitoring, so that interlock with the fuel control unit of boiler, stops the fuel supply when guaranteeing boiler extinguishment, prevent that inflammable substance from building up in burner hearth or pipeline, detonation takes place even cause the bursting of boilers.
Description of drawings
Fig. 1 is an operation principle block diagram of the present invention; Flame-detecting probe 1, flame amplifier 2, flame source 101, flame sensor 102, probe signal treatment circuit 103, programmable filter module 201, amplification module 202, logarithm modular converter 203, voltage detection module 204, central processing module 205, output module 206, display module 207 and communication module 208 are wherein arranged;
Fig. 2 is the flame sensor 102 signal acquisition circuit figure in the embodiment of the invention;
Fig. 3 is programmable filtration module 201 circuit diagrams of the flame amplifier in the embodiment of the invention;
Fig. 4 is amplification module 202 circuit diagrams of the flame amplifier in the embodiment of the invention;
Fig. 5 is logarithm modular converter 203 circuit diagrams of the flame amplifier in the embodiment of the invention;
Fig. 6 is flame amplifier CPU module 205 circuit diagrams in the embodiment of the invention.
Fig. 7 is flame amplifier output module 206 circuit diagrams in the embodiment of the invention.
The specific embodiment
The present invention is further described below in conjunction with drawings and Examples:
The present invention comprises following assembly as shown in Figure 1: flame-detecting probe 1, flame amplifier 2;
Described flame-detecting probe 1 is made up of flame sensor 102 and probe signal treatment circuit 103;
Described flame amplifier 2 programmable filtration modules 201, form by amplification module 202, logarithm modular converter 203, voltage detection module 204, central processing module 205, communication module 208, display module 207 and output module 206;
Described flame sensor 102 is phosphatization potassium or vulcanized lead sensor CSI04-2 or G1962-2;
Described probe signal treatment circuit 103 is operational amplifier TL0826,
Described programmable filtration module 201 is MF10CCWM;
" VrefA " pin of amplifying circuit in the amplification module 202 " AD7528 " connects the logarithmic transformation circuit " TL082C " in the logarithm modular converter 203, the input of amplification module 202 is imported by " RfbA " pin, by the output of " VrefA " pin, constitute programmable amplifier;
Described logarithm modular converter 203 is TL082C, 7 pin of logarithmic transformation circuit " U308 " connect the VrefA pin of amplification module 202, its OUT pin connects the PAD mouth of central processing module 205, and 7 pin of logarithmic transformation circuit " U308 " U308 and OUT pin connect diode and constitute logarithmic converter;
Described voltage detection module 204 is a resistor voltage divider circuit, and its input connects the operating voltage end of each module, and its output connects the PAD mouth of central processing module 205;
Described central processing module 205 is the MC9S12D64MPV of FREESCALE, and its PAD mouth connects logarithm modular converter 203 and voltage detection module 204, and its PA mouth connects display module 207, and its SCI mouth is connected news module 208, and the PWM mouth connects output module 206;
Described output module 206 is IRFR9120, and its input link connects the PWM mouth of central processing module 205;
Described display module 207 is LCD MODULE PG14432, and its data port link connects the PA mouth of central processing module 205;
Described communication module 208 is MAX202, connects the SCI mouth of central processing module 205;
The output of the probe signal treatment circuit of described flame-detecting probe 1 is connected with the input of the programmable filter module of flame amplifier 2 by four-core multiple twin shielded cable;
The intelligent flame checkout gear comprises flame-detecting probe 1, flame amplifier 2, described flame-detecting probe 1 comprises flame sensor 102 and probe signal treatment circuit 103, the signal of the sensing flame 101 of flame sensor 102, the output of flame sensor 102 is connected with the input of probe signal treatment circuit 103, and the input of the programmable filter module 201 in the output of probe signal treatment circuit 103 and the flame amplifier 2 is connected; The first input end PAD of programmable filter module 201, amplification module 202, logarithm modular converter 203, central processing module 205 is connected in series in proper order, the first input end PAD of central processing module 205 also is connected with voltage detection module 204, the first output PA of central processing module 205 connects display module 207, the second output SCI of central processing module 205 connects communication module 208, and the 3rd output PWM of central processing module 205 connects output module 206.Described flame sensor 102 is phosphatization potassium or vulcanized lead sensor.Described flame amplifier 2
In, " INVA " pin of filter circuit " MF10CCWM " connects the output of probe signal treatment circuit 103 in the described programmable filter module 201, " N/AP/HPB " pin of filter circuit " MF10CCWM " connects " RfbA " pin of amplifying circuit " AD7528 " in the amplification module 202, " BPB " pin in the filter circuit " MF10CCWM " links to each other with " INVB " pin, constitutes programmable bandpass filter.
The course of work of the present invention specifically comprises:
1) flame-detecting probe 1 is aimed at the flame combustion position, when flame 101 had fire burns, flame sensor 102 sensed infrared ray or the ultraviolet ray in the flame;
2) flame sensor 102 changes the faint AC signal of limit one-tenth with optical signal;
3) probe signal treatment circuit 103 is strengthened above-mentioned faint AC signal to amplify and the elimination noise signal;
4) pass the signal to flame amplifier 2 by four-core multiple twin shielded cable;
5) flame amplifier 2 receives programmable filter module 201 filtering before this behind the signal that flame-detecting probe 1 brings, after amplification module 202 amplifications, convert direct current signal to through logarithm modular converter 203 again and send central processing module 205 to carry out the data processing;
6) 207 show the numerical value of flame combustions and have or not fiery state on display module, and by output module 206 numerical quantities of flare up fire is transformed into 0 to 10 volt of voltage range, analog signal that current range is 4 to 20 milliamperes and various switching value are exported; Set up communication by communication module 208 and computer.
Claims (1)
1, a kind of monitoring device for flame combustion situation, comprise flame-detecting probe (1), flame amplifier (2), it is characterized in that described flame-detecting probe (1) comprises flame sensor (102) and probe signal treatment circuit (103), the signal of flame sensor (102) sensing flame (101), the output of flame sensor (102) is connected with the input of probe signal treatment circuit (103), and the input of the programmable filter module (201) in the output of probe signal treatment circuit (103) and the flame amplifier (2) is connected; First input end (PAD) order of programmable filter module (201), amplification module (202), logarithm modular converter (203), central processing module (205) is connected in series, the first input end (PAD) of central processing module (205) also is connected with voltage detection module (204), first output (PA) of central processing module (205) connects display module (207), second output (SCI) of central processing module (205) connects communication module (208), and the 3rd output (PWM) of central processing module (205) connects output module (206); Described flame sensor (102) is phosphatization potassium or vulcanized lead sensor; In the described flame amplifier (2), " INVA " pin of filter circuit " MF10CCWM " connects the output of probe signal treatment circuit (103) in the described programmable filter module (201), " N/AP/HPB " pin of filter circuit " MF10CCWM " connects " RfbA " pin of amplifying circuit " AD7528 " in the amplification module (202), " BPB " pin in the filter circuit " MF10CCWM " links to each other with " INVB " pin, constitutes programmable bandpass filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100216186A CN100487313C (en) | 2007-04-18 | 2007-04-18 | Monitoring device for flame combustion situation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100216186A CN100487313C (en) | 2007-04-18 | 2007-04-18 | Monitoring device for flame combustion situation |
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| Publication Number | Publication Date |
|---|---|
| CN101033849A CN101033849A (en) | 2007-09-12 |
| CN100487313C true CN100487313C (en) | 2009-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2007100216186A Expired - Fee Related CN100487313C (en) | 2007-04-18 | 2007-04-18 | Monitoring device for flame combustion situation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101907303A (en) * | 2009-06-08 | 2010-12-08 | 博西华电器（江苏）有限公司 | Control method of flame indication module of cookers |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101725997B (en) * | 2009-12-15 | 2011-09-07 | 攀钢集团钢铁钒钛股份有限公司 | Hearth safety monitoring method |
| CN102261670A (en) * | 2010-05-24 | 2011-11-30 | 上海闽佳自动化设备有限公司 | Intelligent flame monitor for boiler |
| CN102393026A (en) * | 2011-10-11 | 2012-03-28 | 南京创能电力科技开发有限公司 | Oil gas intelligent flame detection device |
| CN102507018B (en) * | 2011-10-24 | 2013-03-20 | 华北电力大学 | Measuring circuit of self-adaptive flame radiation intensity |
| CN103575390B (en) * | 2012-08-09 | 2015-04-22 | 上海宝信软件股份有限公司 | High-precision multi-channel flame detector |
| CN104235873B (en) * | 2014-09-24 | 2016-05-18 | 华北电力大学 | A kind of flame holding monitoring device and method based on electrostatic transducer |
| CN104315535B (en) * | 2014-10-31 | 2015-06-03 | 山东泰景电力科技有限公司 | Detection device and method for flame burning state |
| CN106897540A (en) * | 2017-03-28 | 2017-06-27 | 中国华能集团清洁能源技术研究院有限公司 | Method is monitored and optimized and revised to a kind of boiler-burner fired state on-line |
| CN107241668B (en) * | 2017-05-17 | 2019-05-24 | 西北工业大学 | A kind of strong generating device and method based on explosive combustion |
| CN109185917B (en) * | 2018-09-03 | 2020-06-12 | 湖南省湘电试验研究院有限公司 | Boiler combustion state online diagnosis method and system based on flame intensity signal |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3903418A (en) * | 1973-12-14 | 1975-09-02 | Forney International | Infrared dynamic flame detector |
-
2007
- 2007-04-18 CN CNB2007100216186A patent/CN100487313C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3903418A (en) * | 1973-12-14 | 1975-09-02 | Forney International | Infrared dynamic flame detector |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101907303A (en) * | 2009-06-08 | 2010-12-08 | 博西华电器（江苏）有限公司 | Control method of flame indication module of cookers |
| CN101907303B (en) * | 2009-06-08 | 2013-06-12 | 博西华电器（江苏）有限公司 | Control method of flame indication module of cookers |
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| CN101033849A (en) | 2007-09-12 |
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Assignee: Nanjing Chuangneng Electric Power Technology Development Co., Ltd. Assignor: Liu Fei Contract fulfillment period: 2009.8.18 to 2019.8.17 Contract record no.: 2009320001589 Denomination of invention: Monitoring device for flame combustion situation Granted publication date: 20090513 License type: Exclusive license Record date: 20090821 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.8.18 TO 2019.8.17; CHANGE OF CONTRACT Name of requester: NANJING CHUANGNENG POWER TECHNOLOGY DEVELOPMENT CO Effective date: 20090821 |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090513 Termination date: 20210418 |