CN101319934A - Novel flame detector - Google Patents
Novel flame detector Download PDFInfo
- Publication number
- CN101319934A CN101319934A CNA2008101163034A CN200810116303A CN101319934A CN 101319934 A CN101319934 A CN 101319934A CN A2008101163034 A CNA2008101163034 A CN A2008101163034A CN 200810116303 A CN200810116303 A CN 200810116303A CN 101319934 A CN101319934 A CN 101319934A
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- photoelectric sensor
- flame
- photoelectric sensors
- photoelectric
- flame detector
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Abstract
A novel flame detector includes a photoelectric sensor shell; an optical sensitive unit is arranged in the photoelectric sensor shell; the optical sensitive unit includes three photoelectric sensors and front light transmission elements; the three photoelectric sensors are provided with the same specifications and properties; the front surfaces of the three photoelectric sensors are provided with light transmission elements; the photoelectric sensor shell is connected with a combustion chamber by an observation tube; the back surfaces of the photoelectric sensors are provided with filter amplification modules; the back surfaces of the filter amplification modules are provided with signal collection units; the back surfaces of the signal collection units are provided with signal processing units. The three photoelectric sensors of the invention convert the received ray radiation signals in a special spectrum section into telecommunication signals for judging the situation of the flame in the combustion chamber and being capable of monitoring the stability of the flame as well as detecting the existence of the flame. The novel flame detector has a simple structure, is conveniently mounted and has remarkable effects.
Description
Technical field
The present invention relates to a kind of detecting device of boiler furnace combustion flame, say further to relate to and a kind ofly utilize three identical photoelectric sensors to convert the optical radiation signal in the certain spectral that receives to electric signal, thereby judge a kind of novel flame detector of flame combustion chamber situation.Belong to boiler furnace flame detection equipment technical field.
Background technology
For safe operation, on the Industrial Boiler stability that flame detection equipment is indicated combustion flame must be installed, thereby guarantee the smooth combustion of fuel, realize the efficient burning of fuel and the discharging that reduces pollutant, flame detection equipment also can judge whether flame is normal from detected Fire Radiation signal, prevents that boiler breakdowns from taking place.As everyone knows, it is again to infrared light from the ultraviolet light to the visible light that the Fire Radiation energy of fuel combustion covers, be the continuous spectrum scope of a broad, so according to the difference of covering spectral range, flame detector also can be further divided into ultraviolet, visible light, infrared three kinds.In the prior art, most of flame detectors all adopt the higher photoelectric sensor of low cost, reliability as sensitive element, and only adopt single photoelectric sensor, so must judge whether operate as normal of photoelectric sensor with an independent self check mechanism (mechanical shutter).This mechanical shutter mechanism periodically opens or closes by certain frequency, its working method is discontinuous, and this structure also can't the failure judgement state be cause by fray-out of flame or cause by the detecting device faults itself because self check mechanism-trouble and lost efficacy and also may become another factor that the burning monitoring was lost efficacy.Therefore, develop a kind of flame detector that not influenced by any self check hardware fault, the detection of boiler combustion flame is had crucial meaning with higher reliability.
Summary of the invention
The objective of the invention is to overcome above-mentioned the deficiencies in the prior art, provide that a kind of optical sensitive unit is made up of three identical photoelectric sensors, can judge combustion chambers burn flame situation, do not need a kind of novel flame detector of special-purpose mechanical type self check hardware.
Technical scheme of the present invention is achieved in that
A kind of novel flame detector, comprise the photoelectric sensor shell, in the described photoelectric sensor shell optical sensitive unit is set, described optical sensitive unit comprises three photoelectric sensors with same size and performance, preposition translucent element, described three same light electric transducers can convert optical radiation signal in the specific light spectral coverage that receives to electric signal, be used to judge the situation of combustion flame, the signal of three same light electric transducers has cross correlation, realize the self-checking of sensor by the cross correlation of three identical photo-sensor signal will, do not need special-purpose mechanical type self check hardware, be not subjected to the influence of any self check hardware fault, and all the other photoelectric sensors still can work on when certain photoelectric sensor breaks down, till fault is repaired.Described photoelectric sensor shell connects the firing chamber by sighting tube, described three photoelectric sensors receive the flame optical radiation signal by preposition translucent element, described translucent element can be that collector lens also can be a goggles, and the filtering amplification module is established in described photoelectric sensor back, the filtering amplification module carries out amplification filtering with the electric signal of three conversion of photoelectric sensor outputs, signal gathering unit is established in described filtering amplification module back, and signal processing unit is established in described signal gathering unit back.
A kind of novel flame detector of the present invention has following advantage with respect to prior art:
1, the present invention utilizes three same light electric transducers, not only can realize the function that single photoelectric sensor flame detects, but also can provide three tunnel Fire Radiation signals to be used for the self check of photoelectric sensor with similarity, promptly when the correlativity between certain two Fire Radiation signal is lower than given threshold value, can the failure judgement unit.
2, the present invention uses three identical photoelectric sensors, and its output signal correlativity each other is better than using different photoelectric sensors, so the single-sensor self check is more reliable.Simultaneously,, not only can carry out localization of fault, and detecting device can utilize two remaining photoelectric sensor operate as normal, be repaired up to the photoelectric sensor that breaks down if a photoelectric sensor breaks down.
3, the present invention is simple in structure, and is cheap, and effect is obvious.
Description of drawings
Fig. 1 is a kind of novel flame detector structural representation of the present invention.
Embodiment
Understand technical scheme of the present invention for one of ordinary skill in the art can be known, now in conjunction with the accompanying drawings the specific embodiment of the present invention be described further:
A kind of novel flame detector, as shown in Figure 1, comprise photoelectric sensor shell 2, three photoelectric sensor 3, preposition translucent elements 1 with same size and performance are set in the photoelectric sensor shell 2, three photoelectric sensors 3 can convert the special spectrum segment signal that receives to electric signal, preposition translucent element 1 is arranged on three photoelectric sensor 3 fronts, and photoelectric sensor shell 2 is connected with firing chamber 4 by sighting tube 8, and preposition translucent element 1 can be that collector lens also can be a goggles.
And filtering amplification module 5 is established in photoelectric sensor 3 back, filtering amplification module 5 carries out amplification filtering with the electric signal of three photoelectric sensors, 3 conversion outputs, signal gathering unit 6 is established in filtering amplification module 5 back, and signal processing unit 7 is established in signal gathering unit 6 back.
Specific implementation method: setting certain boiler is firing chamber 4, flame detector of the present invention, utilize three identical photoelectric sensors 3, receive the optical radiation signal in the specific light spectral coverage in boiler furnace 4 burned flames 9 light fields that 1 radiation is come through translucent elements, and convert thereof into electric signal, through amplification filtering, be arranged on the signal gathering unit 6 and the signal processing unit 7 of photoelectric sensor back, be exaggerated filtered electric signal by gathering and collecting, deliver to other mechanism and use.
Claims (3)
1, a kind of novel flame detector comprises photoelectric sensor shell (2), it is characterized in that, in the described photoelectric sensor shell (2) the optical sensitive unit is set, and described optical sensitive unit comprises three photoelectric sensors (3) and preposition translucent element (1).
2, a kind of novel flame detector according to claim 1 is characterized in that, described photoelectric sensor shell (2) connects firing chamber (4) by sighting tube (8).
3, a kind of novel flame detector according to claim 1, it is characterized in that, filtering amplification module (5) is established in described three photoelectric sensors (3) back, signal gathering unit (6) is established in described filtering amplification module (5) back, and signal processing unit (7) is established in described signal gathering unit (6) back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101163034A CN101319934A (en) | 2008-07-08 | 2008-07-08 | Novel flame detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101163034A CN101319934A (en) | 2008-07-08 | 2008-07-08 | Novel flame detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101319934A true CN101319934A (en) | 2008-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101163034A Pending CN101319934A (en) | 2008-07-08 | 2008-07-08 | Novel flame detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101319934A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103405875A (en) * | 2013-08-05 | 2013-11-27 | 同济大学 | Rotatable flame detecting device |
-
2008
- 2008-07-08 CN CNA2008101163034A patent/CN101319934A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103405875A (en) * | 2013-08-05 | 2013-11-27 | 同济大学 | Rotatable flame detecting device |
| CN103405875B (en) * | 2013-08-05 | 2015-06-24 | 同济大学 | Rotatable flame detecting device |
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| C12 | Rejection of a patent application after its publication | ||
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Open date: 20081210 |