CN206311072U - A kind of combustion supervision system - Google Patents
A kind of combustion supervision system Download PDFInfo
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- CN206311072U CN206311072U CN201621321656.4U CN201621321656U CN206311072U CN 206311072 U CN206311072 U CN 206311072U CN 201621321656 U CN201621321656 U CN 201621321656U CN 206311072 U CN206311072 U CN 206311072U
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Abstract
The utility model discloses a kind of combustion supervision system.The utility model combustion supervision system includes transmitting terminal fixing device, turntable I, emitter, laser switching device, optical path calibrating device, receiving terminal fixing device, turntable II, optical filter, reception device, photodetector；Turntable I, turntable II are separately fixed in transmitting terminal fixing device and receiving terminal fixing device；Emitter is fixed on turntable I；Optical path calibrating device is detachably arranged in transmitting terminal fixing device；Laser switching device is connected by optical fiber with emitter；Optical filter and reception device are coaxially fixed on turntable II；Reception device is connected by optical fiber with photodetector；When light path calibration is carried out, after emitter transmitting indicates light through optical path calibrating device, by burner hearth, light path calibration is carried out into optical path calibrating device after filtered reflection.The utility model combustion supervision system can carry out rapid alignment in boiler cold-state.
Description
Technical field
The utility model is related to a kind of combustion supervision system, and in particular to can measure furnace wall deflection simultaneously under a kind of cold
The combustion supervision system that quick collimation is repaired.
Background technology
In China, most electric power come from thermal power generation.But present thermal power generation pollution is very big, and efficiency also compares
Lowly.And temperature and CO2 Concentration etc. is all the important parameter of burning in burner hearth.Optics sensor based on laser spectrum principle
It is used to solve the concentration components measurement problem related to e measurement technology is extracted, and the e measurement technology based on Principles of Laser already
With the advantage of high speed feedback provided suitable for dynamic process control.
Tunable diode laser absorption spectroscopy method is used prior art more（TDLAS）To measure combustion gas composition, temperature
Degree field and other combustion parameters.Laser more than two kinds of wavelength is merged into light beam and passed through by TDLAS detection combustion system needs
Burner hearth, into the optical antenna and then coupled into optical fibres of receiving terminal.TDLAS detection combustion systems are needed in thermal power plant's cold state
Lower installation, conventional method is that emitter will indicate light to incide receiving terminal, then switches to infrared light, is now swept with scanning algorithm
Retouch signal.This mode needs the plenty of time to debug, to ensure the optical axis of incidence end and the optical axis coaxial line of receiving terminal.While by
In from being preheating to, full load temperature change is big in burner hearth, furnace wall deformation can cause the deviation of transmitting-receiving two-end collimation and cause laser inclined
From, and when boiler then restarts operation from running status to shutdown, because the expendable deformation in furnace wall is detected to TDLAS
The reuse of combustion system has considerable influence, so, before boiler plays machine（I.e. in the case of cold）, it is necessary to regular enters
Row transmitting-receiving light path rapid alignment adjustment operation.Accordingly, it would be desirable to improve existing boiler exam combustion system, make it have quick and precisely
Adjusting function, improves detection combustion system operational efficiency.
The content of the invention
The purpose of this utility model is to solve defect present in prior art, there is provided one kind can be in boiler cold-state
The combustion supervision system of Shi Jinhang rapid alignments.
In order to achieve the above object, the utility model provides a kind of combustion supervision system, including transmitting terminal and receiving terminal；
Transmitting terminal launches laser, by burner hearth, is received by receiving terminal, carries out signal scanning；The changeable transmitting of transmitting terminal indicates light and temperature
Degree field measurement band of light；Wherein, transmitting terminal includes transmitting terminal fixing device, turntable I, emitter, laser switching device, is used for
The optical path calibrating device of detection transmitting terminal and receiving terminal optical axis coaxial line；Receiving terminal includes receiving terminal fixing device, turntable II, filter
Mating plate, reception device, photodetector；Turntable I, turntable II are separately fixed at transmitting terminal fixing device and receiving terminal fixing device
On；Emitter is fixed on turntable I；Optical path calibrating device is detachably arranged in transmitting terminal fixing device, and positioned at hair
Penetrate the front end at end；Laser switching device is connected by optical fiber with emitter；Optical filter and reception device are coaxially fixed on turntable
On II；Reception device is connected by optical fiber with photodetector；When light path calibration is carried out, emitter transmitting indicates light through light
After the calibrating installation of road, by burner hearth, light path calibration is carried out into optical path calibrating device after filtered reflection；Work as combustion supervision
When, now optical path calibrating device is removed, and the emitter sends out temperature field measurement band of light, by burner hearth, through the optical filtering
Piece is received to the reception device.
Above-mentioned optical path calibrating device includes optical detection fastener, semi-transparent semi-reflecting lens, object lens and target plate；Semi-transparent semi-reflecting lens, thing
Mirror and target plate are on optical detection fastener；Optical path calibrating device is detachably arranged at transmitting terminal and fixes by optical detection fastener
On device；Semi-transparent semi-reflecting lens are placed with the launching light of emitter in 45 degree of inclination angles；The optical axis of emitter and the optical axis of object lens
It is vertically intersected on the center of half-reflecting half mirror.
Optical detection fastener lower surface is provided with detachable apparatus or can push unit；Detachable apparatus use draw-in groove or card
Button；Can push unit use slide rail or sliding block.
Above-mentioned optical detection fastener is fixed supporting plate or detection capsule；When using fixed supporting plate, semi-transparent semi-reflecting lens, object lens
With the front that target plate is located at fixed supporting plate, detachable apparatus or can push unit be located at the back side of fixed supporting plate；When using detection
During capsule, semi-transparent semi-reflecting lens, object lens and target plate located at detection capsule in, detachable apparatus or can push unit located at detection capsule
Bottom outside face.
Optical detection fastener is preferably using detection capsule；The detection capsule is provided with incidence hole, light hole and visual window；Enter
Unthreaded hole and light hole are located at the left and right sides of the front end of detection capsule, and just to the center of semi-transparent semi-reflecting lens；Visual window is located at inspection
Survey on the rear end face of capsule, and just to target plate.
Target plate is using band groove graticle or CCD target plates.
The instruction semi-transparent semi-reflecting film of optical band is coated with semi-transparent semi-reflecting lens；Temperature field measurement band of light is coated with optical filter anti-reflection
Film.
Receiving terminal fixing device and transmitting terminal fixing device use mechanical cantilever.
The utility model has advantages below compared to existing technology：The utility model is launched using light path calibration system
End and the detection of receiving terminal light path coaxial line, are received by reception device by semi-transparent semi-reflecting film（That is receiving light path）The instruction of reflection
Light, then focused on target plate by object lens, by tabula rasa target plate position quantize rapid alignment or interpretation deformation side-play amount.And
In boiler startup and operation, the detachable apparatus that have using optical path calibrating device in the utility model or can push unit
Optical detection fastener is removed, combustion supervision system is not influenceed to the measure of hearth combustion parameter.Because the system receiving terminal is adopted
It is that can pass through temperature field measurement band of light optical filter, it has reflex again to instruction light, therefore, in this detection burning
The collimation detection adjustment of system and all processes of boiler temperature field measurement are carried out, without changing and removing, this structure
The performance of detection combustion system is set to be improved and operate very easy.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model combustion supervision system；
Fig. 2 is the schematic diagram that the utility model combustion supervision system carries out light path calibration；
Fig. 3 is the structural representation of optical path calibrating device in Fig. 1.
In figure, 1- emitters, 2- turntables I, 3- mechanical cantilevers I, 4- laser switching devices, 5- optical detection fasteners, 51-
Incidence hole, 52- light holes, 53- visual windows, 6- target plates, 7- object lens, 8- semi-transparent semi-reflecting lens, 9- reception devices, 10- optical filters,
11- turntables II, 12- detectors, 13- temperature field in furnaces, 14- mechanical cantilevers II.
In Fig. 2, α-deflection angle, f- objective focal lengths, d- focuses on light deviation distance.
Specific embodiment
The utility model Combustion detection device is described in detail below in conjunction with the accompanying drawings.
As shown in figure 1, the utility model combustion supervision system rapid alignment and can carry out furnace wall shape under the conditions of cold
Become and measure, including be arranged on Laser emission end and the receiving terminal of boiler furnace both sides, specifically include emitter 1, turntable I 2, machine
Tool cantilever I 3, laser switching device 4, optical path calibrating device, reception device 9, optical filter 10, turntable II 11, photodetector 12,
Mechanical cantilever II 14.Temperature field in furnaces 13 is located in boiler furnace.Turntable I, turntable II are both horizontally and vertically orthogonal
The orthogonal revolving-turret of rotation, manually adjustable or turning table control.
Combustion supervision is constituted by emitter 1, turntable I 2, mechanical cantilever I 3, laser switching device 4, optical path calibrating device
The transmitting terminal of system.Wherein optical path calibrating device located at transmitting terminal front end, including optical detection fastener 5, target plate 6, object lens 7,
Semi-transparent semi-reflecting lens 8.Laser switching device 4 connects emitter 1 by optical fiber, and emitter 1 is fixedly installed in by turntable I 2
On mechanical cantilever I 3.Optical path calibrating device is detachably arranged on mechanical cantilever I 3 by optical detection fastener 5, and assembling position is in hair
The front end of injection device 1.Using detection capsule, capsule uses transparent or nontransparent material to optical detection fastener 5 in the present embodiment,
If Fig. 3 is with transparent material example, target plate 6, object lens 7, semi-transparent semi-reflecting lens 8 are fixed in optical detection fastener 5, prevent external environment
To light path impact, the service life of extension fixture.Detect that the front end of capsule is respectively arranged on the left side and the right side incidence hole 51, light hole
52, just to the center of semi-transparent semi-reflecting lens.Detect that the rear end face of capsule is provided with visual window 53, just to target plate 6.As shown in figure 3, inspection
The bottom for surveying capsule is fixedly connected sliding block, and the chute that sliding block is provided with is assembled with the slide rail for being arranged at the correspondence position of mechanical cantilever I 3
With reference to, slided on slide rail by sliding block and assembled or removed, in specific implementation can also economization fall sliding block, directly by chute
Detection capsule bottom is arranged to realize this function；Or the bottom of detection capsule sets buckle（Or draw-in groove）, with mechanical cantilever I
3 correspondence position is provided with draw-in groove（Or buckle）, both, can manual teardown by snapping connection.This optical detection fastener 5 also may be used
Platy structure directly is used, target plate 6, object lens 7, the fixation of semi-transparent semi-reflecting lens 8 is carried out.In above-mentioned optical path calibrating device semi-transparent half
Anti- mirror 8 is placed with the launching light of emitter 1 in 45 degree of inclination angles, and the plating of semi-transparent semi-reflecting lens 8 indicates the semi-transparent semi-reflecting film of optical band, makes
The optical axis of emitter 1 is vertically intersected on the midpoint of half-reflecting half mirror 8 with the optical axis of object lens 7, and is conjugated.Target plate 6 is placed in
The focus of object lens 7 is simultaneously coaxial.Target plate 6 can be the similar target plate of band groove graticle or CCD target plates etc., the position for judging focal beam spot
Confidence ceases.More easy, object lens 7 and target plate 6 can be substituted directly using CCD camera and camera lens collocation, such as Sony XCG-
5005E industrial CCDs collocation ComputerMP5018-MP2 industrial lens.
Combustion supervision system is constituted by reception device 9, optical filter 10, turntable II 11, photodetector 12, mechanical cantilever II 14
The receiving terminal of system.Wherein, optical filter 10, reception device 9 are coaxially fixedly installed on turntable II 11, and fix peace by turntable II 11
Loaded on mechanical cantilever II 14, reception device 9 is connected by optical fiber with photodetector 12；Wherein, the plating of optical filter 10 temperature field
Measurement wave band anti-reflection film, the optical filter has reflectivity very high to indicating light.
Using the specifically used as follows of the utility model combustion supervision system detectio：Under cold, by laser switching device 4
Instruction light is switched to, the utility model optical path calibrating device is installed on mechanical cantilever I 3 by optical detection fastener 5, adjusted
The instruction light that turntable I 2 projects emitter 1 is projeced on receiving terminal optical filter 10 through semi-transparent semi-reflecting lens 8, and optical filter 10 will
Light is indicated to reflex on semi-transparent semi-reflecting lens 8, semi-transparent semi-reflecting lens 8 will indicate light to reflex to object lens 7 again, through over-focusing dot projection
Onto target plate 6.The focal length of object lens 7 and the size of target plate 6 determine the scope of deflection angle measurement, the focal length of object lens 7 and target plate 6 as
Elemental size determines device resolution ratio.If the optical axis of emitter 1 and reception device 9 is not parallel, focal beam spot can offset target
The center of plate 6, deviates the relative position of target plate central point, can bring following equation into and calculate the deflection angle of optical filter 10, such as Fig. 2 institutes
Show：
In formula：D is focusing light deviation distance（With respect to target plate center）, f is objective focal length, is deflection angle.
According to the deflection angle value that formula is calculated, by finely tuning turntable II, focal beam spot is set to be overlapped in the center of target plate 6.
If the use of objective focal length being 50mm, it is 0.1mrad that turntable does not segment 1 step-length rotation amount of lower rotation, and target plate uses CCD
Target plate, target plate pixel is 2592 × 1944, and picture dot size is 2.2 μm of 2.2 μ m, and the calibration of the system can be obtained by above-mentioned formula
Scope is：57mrad × 42mrad, calibration accuracy is 0.02mrad.
When focal beam spot deviates target plate+50 pixels of central point along x-axis, correspondence offset distance is+110 μm, by formula
Calculate, reception device relative transmission device offset by 1.1mrad, now send instruction regulation turntable II 11 and rotated along x negative directions
11 step-lengths, make focal beam spot complete to be aligned with the coincidence of the central point of target plate 6.
After boiler plays machine：Laser switching device 4 is switched into temperature field measurement band of light, will be on mechanical cantilever I 3
Optical path calibrating device remove, carry out follow-up signal acquisition, measurement temperature.
Boiler is by operation to after shutting down：Rapid alignment operation under cold is repeated, deviation position is recorded, regulation turntable II 11 makes
Focal beam spot to overlap complete with target plate central point and repairs.If hot spot removes investigative range, then it is assumed that deflection is excessive, it is necessary to weight
New calibration.
Claims (8)
1. a kind of combustion supervision system, including transmitting terminal and receiving terminal；The transmitting terminal launches laser, by burner hearth, by receiving
End receives, and carries out signal scanning；The changeable transmitting of transmitting terminal indicates light and temperature field measurement band of light；It is characterized in that：
The transmitting terminal include transmitting terminal fixing device, turntable I, emitter, laser switching device, for detect transmitting terminal and
The optical path calibrating device of receiving terminal optical axis coaxial line；
The receiving terminal includes receiving terminal fixing device, turntable II, optical filter, reception device, photodetector；
The turntable I, turntable II are separately fixed in transmitting terminal fixing device and receiving terminal fixing device；
The emitter is fixed on the turntable I；
The optical path calibrating device is detachably arranged in the transmitting terminal fixing device, and positioned at the front end of the transmitting terminal；
The laser switching device is connected by optical fiber with the emitter；
The optical filter and reception device are coaxially fixed on the turntable II；
The reception device is connected by optical fiber with the photodetector；
When light path calibration is carried out, after the emitter transmitting indicates light through the optical path calibrating device, by burner hearth, through institute
After stating optical filter reflection light path calibration is carried out into the optical path calibrating device.
2. combustion supervision system according to claim 1, it is characterised in that：The optical path calibrating device includes optical detection
Fastener, semi-transparent semi-reflecting lens, object lens and target plate；The semi-transparent semi-reflecting lens, object lens and target plate are on the optical detection fastener；Institute
Optical path calibrating device is stated to be detachably arranged in the transmitting terminal fixing device by the optical detection fastener；Described semi-transparent half
Anti- mirror is placed with the launching light of the emitter in 45 degree of inclination angles；The optical axis of the emitter hangs down with the optical axis of the object lens
Directly intersect at the center of the half-reflecting half mirror.
3. combustion supervision system according to claim 2, it is characterised in that：The optical detection fastener lower surface is provided with
Detachable apparatus can push unit；The detachable apparatus use draw-in groove or buckle；It is described can push unit using slide rail or
Sliding block.
4. combustion supervision system according to claim 3, it is characterised in that：The optical detection fastener be fixed supporting plate or
Detection capsule；The semi-transparent semi-reflecting lens, object lens and target plate are located at the front of the fixed supporting plate or in the detection capsule；
The detachable apparatus or can push unit located at the fixed supporting plate the back side or the detection capsule bottom outside face.
5. combustion supervision system according to claim 4, it is characterised in that：The optical detection fastener is detection capsule；
The detection capsule is provided with incidence hole, light hole and visual window；The incidence hole and light hole are located at the detection capsule
The left and right sides of front end, and just to the center of the semi-transparent semi-reflecting lens；The visual window is located at the rear end face of the detection capsule
On, and just to the target plate.
6. combustion supervision system according to claim 5, it is characterised in that：The target plate using band groove graticle or
CCD target plates.
7. combustion supervision system according to claim 2, it is characterised in that：Instruction light wave is coated with the semi-transparent semi-reflecting lens
The semi-transparent semi-reflecting film of section；Temperature field measurement band of light anti-reflection film is coated with the optical filter.
8. combustion supervision system according to claim 1, it is characterised in that：The receiving terminal fixing device and transmitting terminal are solid
Determine device and use mechanical cantilever.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621321656.4U CN206311072U (en) | 2016-12-05 | 2016-12-05 | A kind of combustion supervision system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621321656.4U CN206311072U (en) | 2016-12-05 | 2016-12-05 | A kind of combustion supervision system |
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| Publication Number | Publication Date |
|---|---|
| CN206311072U true CN206311072U (en) | 2017-07-07 |
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| CN201621321656.4U Active CN206311072U (en) | 2016-12-05 | 2016-12-05 | A kind of combustion supervision system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441141A (en) * | 2016-12-05 | 2017-02-22 | 南京科远自动化集团股份有限公司 | Combustion detection system and combustion detection method thereof |
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2016
- 2016-12-05 CN CN201621321656.4U patent/CN206311072U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441141A (en) * | 2016-12-05 | 2017-02-22 | 南京科远自动化集团股份有限公司 | Combustion detection system and combustion detection method thereof |
| CN106441141B (en) * | 2016-12-05 | 2023-03-17 | 南京科远智慧科技集团股份有限公司 | Combustion detection system and combustion detection method thereof |
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