CN101922731A - The optical pickocff of control is used to burn - Google Patents

The optical pickocff of control is used to burn Download PDF

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Publication number
CN101922731A
CN101922731A CN2010102134727A CN201010213472A CN101922731A CN 101922731 A CN101922731 A CN 101922731A CN 2010102134727 A CN2010102134727 A CN 2010102134727A CN 201010213472 A CN201010213472 A CN 201010213472A CN 101922731 A CN101922731 A CN 101922731A
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CN
China
Prior art keywords
flame
combustion
filter
flame region
camera lens
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Pending
Application number
CN2010102134727A
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Chinese (zh)
Inventor
K·R·麦芒努斯
L·B·小戴维斯
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General Electric Co
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General Electric Co
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Publication of CN101922731A publication Critical patent/CN101922731A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/02—Regulating fuel supply conjointly with air supply
    • F23N1/022—Regulating fuel supply conjointly with air supply using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/08—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements
    • F23N5/082—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using light-sensitive elements using electronic means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • G01J3/0205—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows
    • G01J3/0208—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows using focussing or collimating elements, e.g. lenses or mirrors; performing aberration correction
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • G01J3/0205—Optical elements not provided otherwise, e.g. optical manifolds, diffusers, windows
    • G01J3/0237—Adjustable, e.g. focussing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/02—Details
    • G01J3/0264—Electrical interface; User interface
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/28—Investigating the spectrum
    • G01J3/30—Measuring the intensity of spectral lines directly on the spectrum itself
    • G01J3/36—Investigating two or more bands of a spectrum by separate detectors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/71—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited
    • G01N21/72—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited using flame burners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2229/00—Flame sensors
    • F23N2229/20—Camera viewing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2241/00—Applications
    • F23N2241/20—Gas turbines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R2900/00—Special features of, or arrangements for continuous combustion chambers; Combustion processes therefor
    • F23R2900/00013—Reducing thermo-acoustic vibrations by active means

Abstract

The present invention relates to be used to the to burn optical pickocff of control, particularly, specific embodiment of the present invention can comprise the system and method for the optical pickocff that being used to provide the control that is used to burn.According to one exemplary embodiment of the present invention, provide a kind of method that is used for the control combustion parameter relevant with gas turbine combustor (102).This method provides at least one light path near can being included in flame region (106) in the burner (102), detect from the photoemissive at least a portion of the flame region (106) in this at least one light path and be based in part in the detected smooth emission control combustion parameter at least one.

Description

The optical pickocff of control is used to burn
Technical field
Relate generally to sensor of the present invention, and the optical pickocff of the control that relates more particularly to be used to burn.
Background technology
The modern industry combustion gas turbine requires efficiently, and switching energy produces minimum pollutant effulent simultaneously.But these two requirements are in opposition to each other, because higher efficient generally realizes by the overall gas temperature in the rising combustion chamber, and typically reduce by reducing the highest gas temperature such as the pollutant of nitrogen oxide.The highest gas temperature can reduce by keep rare air-fuel ratio in the combustion chamber, if but fuel/air mixture is rare excessively, and then incomplete fuel combustion can produce excessive carbon monoxide and unburned hydrocarbon.Therefore, the temperature in the reaction zone must enough be supported completing combustion.
For the afoul needs of balance, require the extreme accurate fuel/air mixture of controlling in the reaction zone of regulating burner for the discharging of efficient that increases and minimizing.Proposed this system: it is used for by monitoring that various combustion parameters control fuel/air mixture, and uses and record parameter and control fuel system as input.For example, a kind of system of routine comprises control system, wherein utilizes fuel flow rate, stress level and delivery temperature to distribute as the input that is used to set the fuel trim control valve.
Other technology that is used to control the burning dynamic change comprises the light emission of measurement from burner flame, and uses and record the signal controlling specific combustion parameters.For example, conventional system uses and adopts the closed loop feedback system of silicon carbide diode with the measurement sensing combustion flame temperature by ultraviolet radiation intensity.The ultraviolet radiation that senses is used for controlling the air-fuel ratio of fuel mixture, remains on below the intended level relevant with the expectation low level of nitrogen oxide with the temperature with flame.
Other conventional system can use the optical fiber that is used for assembling and transmitting to detector from the combustion zone light.Other conventional system can use video camera to catch the image of flame again, and it is mainly used in the existence or the disappearance of monitoring flame.
Still need to be used to provide the improved system and method for optical pickocff.
Summary of the invention
Need more than can solving partly or entirely by specific embodiment of the present invention.Specific embodiment of the present invention can comprise the system and method for the optical pickocff that being used to provide is used to burn controls.
According to one exemplary embodiment of the present invention, provide a kind of method that is used to control the combustion parameter relevant with gas turbine combustor.This method provides at least one light path near can being included in flame region in the burner, survey from the photoemissive at least a portion of the flame region in this at least one light path and be based in part in the light emission control combustion parameter that detects at least one.
According to another exemplary embodiment of the present invention, provide a kind of system that is used to control the combustion parameter relevant with gas turbine combustor.This system can comprise: near at least one optical port the flame region in burner; With one or more photodetectors of this at least one optical port communication, these one or more photodetectors can be operated to survey the photoemissive at least a portion from flame region; And at least one control device, it can be operated down to small part ground based on the one or more combustion parameters of one or more signal controlling from these one or more photodetectors.
According to another exemplary embodiment, provide a kind of combustion gas turbine.This combustion gas turbine can comprise: burner; Near the flame region in burner at least one optical port; One or more photodetectors, itself and this at least one optical port communication, and can operate to survey the photoemissive at least a portion from flame region; And at least one control device, it can be operated down to small part ground based on the one or more combustion parameters of one or more signal controlling from these one or more photodetectors.
The part of claimed invention is described and be considered as in other embodiments of the invention and aspect in the text in detail.Can understand other embodiment and aspect with reference to specification and accompanying drawing.
Description of drawings
Now with reference to the accompanying drawings, accompanying drawing is not necessarily drawn in proportion, and wherein:
Fig. 1 has described according to illustrative optical pickocff one exemplary embodiment of the present invention and flame region communication turbomachine combustor.
Fig. 2 illustrates the optical pickocff imaging system according to narrow visual field of the present invention exemplary embodiment, and wherein camera lens is positioned to collect mainly the light from a flame region of burner.
Fig. 3 illustrates the optical pickocff imaging system according to wide visual field of the present invention exemplary embodiment, wherein the camera lens light of a plurality of flame regions of spontaneous combustion device that is positioned to collect.
Fig. 4 is the exemplary method flowchart that is used to measure the flame combustion parameter according to exemplary embodiment of the present invention.
Component list
100 have the pipe burner of flame sensor and control system
102 pipe burners
104 flames
106 flame regions
112 optical ports
114 camera lenses
116 beam splitters
118 first filters
120 second filters
122 first optical detectors
124 second optical detectors
126 detector electronics
128 combustion control systems
130 apertures
200 narrow visual field imaging combustion and sensing systems
202 lens focus
204 planes of delineation
206 objective planes
208 flame object
210 flame images
212 target ranges
214 image distances
216 optical axises
300 wide visual field imaging combustion and sensing systems
The specific embodiment
Hereinafter describe embodiments of the invention with reference to the accompanying drawings more fully, embodiments of the invention have been shown in the accompanying drawing.Yet the present invention can take multiple multi-form enforcement and should not be interpreted as being confined to embodiment as herein described; On the contrary, provide these embodiment, and these embodiment will pass on scope of the present invention for those skilled in the art so that present disclosure is detailed and complete.Similar label is indicated similar element all the time.
One embodiment of the present of invention can make it possible to measure combustion parameter by optionally surveying space, time and/or the spectral light emission from burner flame in turbomachine combustor.According to embodiments of the invention, the combustion parameter that records can be used to control the various parameters of burner again, distributes to optimize discharged nitrous oxides, dynamic pressure vibration and fuel efficiency including, but not limited to fuel flow rate, air-fuel ratio and fuel flow rate.
According to example embodiment of the present invention, can use optical detector to monitor and discharge from the chemiluminescence of one or more flames in the burner.Can be to luminous energy emission carrying out spectral filtering, to determine from particular excitation state material such as OH *, CH *, C2 *And CO2 *Total photoemissive partial action.These can be recorded ratio and air-fuel ratio, rate of heat release and the temperature association of signal.According to exemplary embodiment, can analyze time resolution output from optical detector, with the announcement wild effect relevant with burning, and it can be used to indication burning acoustic oscillations (burning dynamic change), initial flame eruption (blowout) and fray-out of flame.In addition, output signal can be used as the feedback that is used for the closed loop combustion control system.Now describing with reference to the accompanying drawings is used to burn according to an embodiment of the invention controls various sensor options and the structure of using.
Fig. 1 illustrates the example tubular burner according to one exemplary embodiment of the present invention, and it has flame sensor and the control system 100 that is used to control the combustion parameter relevant with gas turbine combustor.The flame sensor member can place or be installed near the pipe burner 102 and in can near the flame region 106 of pipe burner 102, optionally surveying from pipe burner 102 light of flame 104 launch.Can be from the light emission of at least a portion of burner flame 104 through the optical port 112 in the sidewall of pipe burner 102 and can be by one or more camera lens 114 focusing, imaging or conversion.According to exemplary embodiment of the present invention, this one or more camera lens 114 is removable to change the optical system visual field, as following with reference to as described in Fig. 2 and Fig. 3.
According to one exemplary embodiment of the present invention, and continue with reference to Fig. 1, it is neighbouring with the light intensity of control from flame 104 that aperture 130 can be placed in camera lens 114.Aperture 130 also can be used for regulating the optical system degree of depth of field.According to one exemplary embodiment of the present invention, part from the spectrum of the light of burner flame 104 can be filtered by first optical filter 118 before arriving first optical detector 122, with the partial action of total light radiation of the particular excitation state material that produces light radiation in the arrowband part that helps to determine to come comfortable spectrum.According to exemplary embodiment of the present invention, can be its in the relevant wavelength spectral window response and select optical detector 122.For example, can select carborundum (SiC) photodetector, and therefore, it can be suitable for sensing from the excited state OH in the 300nm wave-length coverage owing to its sensitiveness to the ultraviolet part of wave spectrum *The emission of group (radical).OH *Emission can be the leading indicator of chemical reaction intensity (heat discharges), and therefore, the wavelength in the 300nm zone can be used to determine gas temperature.According to another embodiment, silicon (Si) photodetector can be used for monitoring from comprising CH *(about 430nm) and C2 *The emission of the chemical substance in 400 to the 1000nm spectrum of (about 514nm).Found that heat in these flame groups and the premixed flame discharges and local air-fuel ratio is directly proportional.
According to one exemplary embodiment of the present invention, the photoemissive part that beam splitter 116 can be used to see through second filter 120 is redirected to second optical detector 124.The spectral transmissions characteristic of first filter 118 and second filter 120 may be selected to and makes and can partly eliminate the jamming pattern emission from the lower excited state material of influence simultaneously with the precision measure particular excitation state material ratio that increases.According to an exemplary embodiment, first filter 118 and second filter 120 can be interchangeable, fixing or tunable.According to exemplary embodiment, filter 118,120 can be narrow-band filter.Fabry Perot (Fabry-Perot) or dichroic filter are to can be used to transmit that the specific wavelength band is decayed simultaneously or the example of the type of the filter of the outer wavelength of the zone of reflections.
Also show the square frame of representing detector electronics 126 and combustion control system 128 among Fig. 1.According to an exemplary embodiment, detector electronics 126 can be operated to regulate, amplify, to filter and to handle the signal from optical detector 122,124.Detector electronics 126 also can be provided for the control regulating the diameter of aperture 130 and/or be used to locate camera lens 114.Output signal from detector electronics can be used as the control signal that is used for combustion control system 128.For example, according to one embodiment of present invention, the CH that records is to OH chemiluminescence ratio (CH */ OH *) can be used as the feedback in the combustion control system 128, and can provide control dynamically to regulate air-fuel ratio.
Fig. 2 has described the end-view according to the combustion zone of one exemplary embodiment of the present invention and narrow visual field imaging combustion and sensing system 200.For clear, from then on figure has omitted beam splitter 116, second optical detector 124 and first filter 118 and second filter 120.According to an exemplary embodiment, but from the photoemissive part imaging of burner flame 104 to the surface of optical detector 122.In one exemplary embodiment, flame object 208 can be in the plane of delineation 204 places imaging to produce flame image 210.In one exemplary embodiment, the optical detector 122 that is in the plane of delineation 204 can comprise the single sense element with limited sensing area, and therefore, imaging can produce and be incident on the proportional output signal of integration summation of the total luminous energy on the detector to the light radiation on the sensor region.According to the optical imagery theory that is used for thin camera lens, can determine the visual field by the combination of the factor of focal distance f 202, target range 212 and the image distance 214 of the width that comprises the laying of camera lens 114, optical detector 122, camera lens 114.Can be with target range d o212, image distance d i214 and the focal distance f of camera lens between general relationship be expressed as 1/d o+ 1/d i=1/f.The image amplification can be expressed as M=-d i/ d o, wherein minus sign represents that this image puts upside down with respect to optical axis 216.
Fig. 2 has shown exemplary narrow visual field embodiment, and the camera lens 114 that wherein has focal distance f 202 is placed on the exemplary primary importance at the distance plane of delineation 204 image distances 214 places, and the plane of delineation 204 overlaps with the surface of optical detector 122 herein.In this representative configuration, the flame object 208 that is positioned at objective plane 206 places produces flame image 210 at the plane of delineation 204 places.Shown representative configuration also will allow to be incident on the optical detector 122 from the sub-fraction of the light of the burner flame 104 of not imaging, but the major part of the output signal that detector produced will drop on part correlation on the zone of action of detector with imaging flame 210.In one exemplary embodiment of the present invention, detector is adjustable, makes it to move along the plane of delineation, so that can select different burner flames 104 zones for detection.
According to one exemplary embodiment of the present invention, that fix or adjustable aperture (not shown) can be placed near the detector, may be incident on the undesirable part on the optical detector 122 in the restriction flame image 210 in addition.Fixing or adjustable aperture can be parallel to the plane of delineation 204 and move, be used in the burner flame image 210 use detector to carry out the zone of sensing optionally to transmit, thereby provide mobile detector so that can select the alternative in different burner flames 104 zones for detection.According to one exemplary embodiment of the present invention, can in the plane of delineation 204, utilize a plurality of detectors, with survey simultaneously or monitored space on the zone of the burner flame 104 that separates.
Fig. 3 has described the end-view according to the combustion zone of one exemplary embodiment of the present invention wide visual field imaging combustion and sensing system 300.For clear, from then on figure has omitted beam splitter 116, second optical detector 124 and first filter 118 and second filter 120.In this graphical representation of exemplary, removable camera lens 114 is positioned to compare with the diagram shown in Fig. 2 the more close optical detector 122 and the plane of delineation 204.The result that camera lens 114 is moved into more close optical detector 122 is that the distance between the plane of delineation 204 and the objective plane 206 can be roughly according to thin camera lens formula 1/d o+ 1/d i=1/f increases.Another result that camera lens 114 is moved into more close optical detector 122 is that the size of flame image 210 can be roughly according to magnifying power M=-d i/ d oDwindle.Therefore, depend on the geometry of imaging system, the position of camera lens 114 and the area of optical detector 122, be incident on the image that flame image 210 on the optical detector 122 can comprise a plurality of burner flame targets 208.Therefore, by regulate the position of removable camera lens 114 towards detector, imaging system is optionally collected and the light emission (that is, as shown in Figure 3 wide visual field embodiment) of imaging from a plurality of burner flames 104.On the contrary, by regulate the position of removable camera lens 114 away from detector, imaging system is optionally collected with imaging and is mainly launched (that is narrow visual field embodiment as shown in Figure 2) from the light of single burner flame 104.
According to exemplary embodiment, can select one dimension or the two-dimensional representation of optical detector 122,124 to measure main combustion parameter.For example, optical detector 122,124 can comprise an array sensing element rather than single sensing element.Therefore, these arrays can be caught image on two-dimensional grid, be similar to digital camera system.The example of this type of array can be including, but not limited to charge-coupled device (CCD), complementary metal oxide semiconductors (CMOS) (CMOS) array and indium gallium arsenide (InGaAs) array.
Now the illustrative methods that is used for measuring the flame parameters that is used to control combustion characteristics is described with reference to the flow chart 400 of Fig. 4.Beginning and according to one exemplary embodiment of the present invention in square frame 402 can provide at least one optical port as 112 at the turbine pipe burner in as 102 body near as 106 at flame region.This optical port can be made of as quartz, sapphire or other suitable material with transmission bandwidth of low-loss and suitable relevant wavelength the high temperature resistance light transmissive material.Launch and to be transferred to all the other optical systems by optical port 112 as 104 light from burner flame; these all the other optical systems can occupy pipe burner 102 outsides, and wherein heat insulation, cooling etc. can be used to protect Optical devices, detector and relevant electronic installation and hardware.
At square frame 404, according to one exemplary embodiment of the present invention, optical system can be included in optical port as near the iris ring 112 as 130.But iris ring 130 manual adjustments, but perhaps its motorization is gone into as total light stream of 122,124 thereby regulate the arrival optical detector so that can control the diameter of aperture openings electronically.Iris ring 130 also can be used to be provided for the depth of field control of optical imaging system.According to an exemplary embodiment, iris ring 130 can be installed near the optical port 112.Optical imaging system can be included in addition near the iris ring 130 adjustable or removable camera lens as 114 or lens system, at least respond burner flame such as institute's care of 104 emission spectrum partly at least one optical detector 122 and be in the light path in optical detector 122 the place aheads and can operate optionally the part of burner flame 104 emission spectrum is transferred at least one filter of optical detector 122 as 118.
Determination block 406 has been described available two settings of optical imaging system: wide visual field and narrow visual field.According to an exemplary embodiment, this binary (wide and narrow) is provided with and can finishes by fixed lens optionally being inserted remove along the appropriate location of light path or from it.Yet according to another exemplary embodiment, camera lens is movably as 114, and therefore, the visual field also can be variable, and can be set in any middle setting the between extreme wide visual field and the setting of narrow visual field as required.
In square frame 408, for example by with camera lens as 114 and optical detector be the focal distance f 202 of about camera lens 114 as the distance adjustment between 122, can be set to comprise wide visual field (as shown in Figure 3) by optical imaging system.
In square frame 410,, optical imaging system can be made as and comprise narrow visual field (as shown in Figure 2) for example by being the twice of the focal distance f 202 of about camera lens 114 as the distance adjustment between 122 with camera lens 114 and optical detector.Physical constraint can limit the actual motion of camera lens 114, therefore, is understandable that, the present invention is not limited to disclosed specific embodiment, and can utilize other camera lens method according to embodiments of the invention.
The optional ratio measurement technology of square frame 412 expressions can be used for measuring simultaneously and related two or more wavelength of being concerned about.According to an exemplary embodiment, can be as shown in Figure 1 by providing beam splitter 116, first filter 118, first optical detector 122, second filter 120 and second optical detector 124 to realize this ratio measurement technology.In one exemplary embodiment, can optionally measure from a kind of material that excites (for example near the CH of 425nm by utilizing first filter 118 and first optical detector 122 *) transmitting response and use second filter 120 simultaneously and second optical detector 124 is measured another kinds and excited material (for example, near the OH of 310nm *) response and realize the ratio measurement.The ratio measurement for example can pass through CH *Response divided by OH *Response and realize.Ratio CH */ OH *Shown and equivalent proportion Relevant, this equivalent proportion is the general purpose function relevant with multiple combustion characteristics.Another aspect of ratio measurement technology is to eliminate the common background radiation of each detector, thereby increases signal to noise ratio.
In square frame 414, and, can measure the combustion flame characteristic according to an exemplary embodiment.These characteristics can comprise the combination of emission spectrum, time disturbance, flame image or these characteristics.Measurement can comprise spectrum and time dependent both information.For example, the part of flame emission spectrum can be selected by filtration, and the emission of filtering can be incident on one or more optical detectors 122,124, and to produce time dependent signal, this signal can be used for extracting combustion parameter from measurement result in square frame 416.The combustion parameter of being extracted can be used for using other method control and the optimization combustion characteristics according to embodiments of the invention in square frame 418.For example, the combustion parameter of being extracted can be used for fuel distribution between regulate fuel flow, air-fuel ratio, burner etc. in feedback control loop.
Benefit from front description and relevant drawings in the instruction that presents, those skilled in the art in the invention will expect a lot of remodeling of the present invention and other embodiment.Therefore, it should be understood that the present invention is not limited to the disclosed specific embodiment, and remodeling is included in the protection domain of claims with other embodiment intention.Though this paper has adopted particular term, only on the meaning of common and description, use they and purpose not to lie in and limit.

Claims (20)

1. method that is used for the control combustion parameter relevant with gas turbine combustor (102), described method comprises:
Provide at least one light path near the flame region (106) in described burner (102);
In described at least one light path, survey photoemissive at least a portion from described flame region (106); And
Be based in part on the light emission that detects and control in the described combustion parameter at least one.
2. method according to claim 1, it is characterized in that photoemissive at least a portion of surveying from described flame region (106) comprises that optionally filtering described light emission launches relevant spectral information with isolation with described light in described at least one light path.
3. method according to claim 1, it is characterized in that, providing at least one light path to comprise near the flame region (106) in described burner (102) provides camera lens (114), described camera lens (114) can operate with imaging described photoemissive at least a portion from described flame region (106).
4. method according to claim 3, it is characterized in that, providing at least one light path to comprise near the flame region (106) in described burner (102) provides removable camera lens (114), described removable camera lens (114) can operate to regulate at least one visual field relevant with described light path changeably.
5. method according to claim 1, it is characterized in that photoemissive at least a portion of surveying from described flame region (106) comprises at least a portion of using first filter (118) to filter at least a portion of described light and using the light after at least one first photodetector (122) detection described first is filtered in described at least one light path.
6. method according to claim 5, it is characterized in that, photoemissive at least a portion of surveying in described at least one light path from described flame region (106) comprises at least a portion of using second filter (120) to filter at least a portion of described light and using the light after at least one second photodetector (124) detection described second is filtered, and wherein said second filter (120) is different from described first filter (118).
7. method according to claim 6 is characterized in that, is based in part on from the described combustion parameter of signal controlling of described at least one first photodetector (122) and described at least one second photodetector (124) at least one.
8. method according to claim 1, it is characterized in that, be based in part on that in the described combustion parameter of light emission control that detects at least one comprises that control fuel flow rate, fuel flow rate distribution, air-fuel ratio, combustion flame vibration, combustion flame extinguish, in rate of heat release or the flame temperature at least one.
9. method according to claim 1 is characterized in that, providing at least one light path to comprise near the flame region (106) in described burner (102) provides beam splitter (116) spatially to separate light path.
10. system that is used for the control combustion parameter relevant with gas turbine combustor (102), described system comprises:
At least one optical port (112) is near its flame region (106) in described burner (102);
With one or more photodetectors (122,124) of described at least one optical port (112) communication, described one or more photodetectors (122,124) can be operated to survey the photoemissive at least a portion from described flame region (106); And
At least one control device (128), it can be operated down to small part ground based on the one or more combustion parameters of one or more signal controlling from described one or more photodetectors (122,124).
11. system according to claim 10 is characterized in that, described system also comprises:
One or more filters (120,122), it can be operated to isolate and the relevant spectral information of described light emission.
12. system according to claim 10 is characterized in that, described system also comprises:
At least one camera lens (114), it can be operated with imaging photoemissive at least a portion from described flame region (106).
13. system according to claim 12 is characterized in that, described at least one camera lens (114) comprises removable camera lens (114), and described removable camera lens (114) can be operated to regulate at least one visual field relevant with described light path changeably.
14. system according to claim 10 is characterized in that, described system also comprises:
At least one first filter (118), wherein said at least one first filter (118) and described at least one first photodetector (122) communication.
15. system according to claim 14 is characterized in that, described system also comprises:
At least one second filter (120), wherein said at least one second filter (120) and described at least one second photodetector (124) communication.
16. system according to claim 15, it is characterized in that described at least one control device (128) can be operated down to small part ground based on the described one or more combustion parameters of signal controlling from described at least one photodetector (122) and described at least one second photodetector (124).
17. system according to claim 10, it is characterized in that, described operate with at least one control device (128) of controlling one or more combustion parameters can operate with control fuel flow rate, fuel flow rate distribution, air-fuel ratio, combustion flame vibration, combustion flame extinguish, in rate of heat release or the flame temperature at least one.
18. system according to claim 10 is characterized in that, described system also comprises:
At least one beam splitter (116), it can be operated spatially to separate the light emission from described flame region (106).
19. system according to claim 10 is characterized in that, described one or more optical detectors (122,124) are in response at least a portion of ultraviolet spectrogram.
20. a combustion gas turbine comprises:
Burner (102);
At least one optical port (112) is near its flame region (106) in described burner (102);
One or more photodetectors (122,124), itself and described at least one optical port (112) communication, and can operate to survey the photoemissive at least a portion from described flame region (106); And
At least one control device (128), it can be operated down to small part ground based on the one or more combustion parameters of one or more signal controlling from described one or more photodetectors (122,124).
CN2010102134727A 2009-06-15 2010-06-13 The optical pickocff of control is used to burn Pending CN101922731A (en)

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