CN101290290A - Laser gas concentration measurement equipment probe device - Google Patents
Laser gas concentration measurement equipment probe device Download PDFInfo
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- CN101290290A CN101290290A CNA2008100550472A CN200810055047A CN101290290A CN 101290290 A CN101290290 A CN 101290290A CN A2008100550472 A CNA2008100550472 A CN A2008100550472A CN 200810055047 A CN200810055047 A CN 200810055047A CN 101290290 A CN101290290 A CN 101290290A
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- splitter
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- object lens
- gas concentration
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Abstract
The invention discloses a probe device for a laser gas concentration measuring instrument, belonging to the gas concentration measurement technical field. The invention is to solve the problem that the invention provides the probe device for the laser gas concentration measuring instrument which can stably, reliably and accurately measure the gas concentration with the function of automatic calibration. The probe device adopts the proposal that: the probe device for the laser gas concentration measuring instrument mainly comprises a laser source, an optical collector, an ocular, an infrared photosensitive tube, an objective and a semi-transparent beam-splitter, wherein, the laser source is arranged on the leftmost position; the laser source is coaxially and horizontally provided with the optical collector, the ocular and the objective in turn; the semi-transparent beam-splitter is fixed between the ocular and the objective; the infrared photosensitive tube is arranged on the upper part of the semi-transparent beam-splitter; and a light blocking device is arranged between the semi-transparent beam-splitter and the objective and can selectively open up or shield signal lights which are reflected to the semi-transparent beam-splitter through the objective. The probe device can be widely applied in various gas concentration measurement fields.
Description
Technical field
The present invention relates to a kind of probe apparatus of laser gas concentration measurement equipment, being specifically related to a kind of laser gas Spectrum Absorption Principle of utilizing makes, the concentration of the fixed discharge source institute emission gases that produces in power industry, chemical industry, cement industry, steel and iron industry, waste incineration industry, danger wastes burning, various Industrial Boiler, kiln and other industrial process is carried out the probe apparatus of on-line continuous measuring equipment, belong to the gas concentration measurement technical field.
Background technology
For industries such as power industry, chemical industry, cement industry, steel and iron industry, waste incineration industry, needs for aspects such as flue gas pollutant qualified discharge, safety in production control, optimization production technologies, the gas that produces in the production run has been proposed the requirement of on-line monitoring, on-line analysis, and the present invention adopts the semi-conductor laser absorption spectrum technology to develop the laser gas concentration measurement device.Conventional online gas-monitoring and analytic system generally adopt extraction technique, after complicated pretreatment, utilize optical means or electrochemical method to carry out Measurement and analysis gas component concentrations wherein again, mostly this gas concentration measuring method is to utilize the gaseous spectrum principle of absorption of infrared light supply, but because of in measuring process, there is several factors to affect the variation of gas composition, thereby have influence on the accuracy of measurement, as external environment and variation of temperature, sample gas departs from the primal environment state and causes change of component, and power circuit interference etc. all can influence the variation of light source light intensity and the reception of photosensitive device.Though take certain measure, transmit as sample gas being carried out tracing thermal-insulating, high-temperature analysis is measured, but because of outdoor environment and service condition abominable, the measurement of gas concentration always is subjected to the various particulates in flue gas and the industrial process gas, the defective of sampling mechanism, the particularly influence of water component makes measurement inaccurate, has influenced the accuracy of measuring.For this reason, must consider to adopt additive method could guarantee the accuracy of measuring.
Summary of the invention
The present invention overcomes the defective that prior art exists, and problem to be solved is: a kind of probe apparatus of laser gas concentration measurement equipment is provided, can calibrates automatically, reliable and stable, accurate measure gas concentrations.
In order to address the above problem, the scheme that the present invention adopts is: the probe apparatus of laser gas concentration measurement equipment, mainly comprise: lasing light emitter, condenser, eyepiece, infrared photosensitive tube, object lens, translucent beam-splitter, lasing light emitter is arranged on high order end, same axle horizontal at lasing light emitter is disposed with condenser to the right, eyepiece and object lens, translucent beam-splitter is fixed between eyepiece and the object lens, be provided with infrared photosensitive tube in the top position of translucent beam-splitter, be provided with light-baffling device between described translucent beam-splitter and object lens, the flashlight that reflexes to translucent beam-splitter by object lens can optionally be opened or block to described light-baffling device.
Be provided with the standard air chamber and the light gathering reflector of described light-baffling device, sealing on the reverse extending line at described infrared photosensitive tube and translucent beam-splitter center from top to bottom, the reference light that reflexes to translucent beam-splitter by light gathering reflector and standard air chamber can optionally be opened or block to light-baffling device.
Described light-baffling device can only reflex to the flashlight of translucent beam-splitter by object lens separately or reflex to the reference light of translucent beam-splitter separately by light gathering reflector and standard air chamber.
Described light-baffling device mainly comprises whirligig and arc shadow shield, and described whirligig is positioned at the place ahead in probing shell centre position; Described arc shadow shield is fixed on the lower right of whirligig, and between translucent beam-splitter and object lens and translucent beam-splitter and standard air chamber.
Described translucent beam-splitter becomes 30 °～150 ° angle with the central axis of condenser and object lens, and the axis at infrared photosensitive tube and translucent beam-splitter center becomes 30 °～150 ° angle with the central axis of condenser and object lens.
At 45 or 135 ° the angle of the central axis of described translucent beam-splitter and condenser and object lens, the axis at infrared photosensitive tube and translucent beam-splitter center becomes 90 ° angle with the central axis of condenser and object lens.
The probe apparatus of laser gas concentration measurement equipment of the present invention compared with prior art has following beneficial effect:
The present invention is provided with light-baffling device between translucent beam-splitter and object lens, the flashlight that reflexes to translucent beam-splitter by object lens can optionally be opened or block to described light-baffling device, be provided with the standard air chamber and the light gathering reflector of described light-baffling device, sealing on the reverse extending line at infrared photosensitive tube and translucent beam-splitter center from top to bottom, the reference light that reflexes to translucent beam-splitter by light gathering reflector and standard air chamber can optionally be opened or block to light-baffling device; Light-baffling device can also reflex to the flashlight of translucent beam-splitter by object lens separately or reflex to the reference light of translucent beam-splitter separately by light gathering reflector and standard air chamber, can need not sampling like this, only need the calibrating gas of splendid attire gas to be measured in the standard air chamber of sealing, can realize the measurement of gas on-site concentration, add the light-baffling device that can obstruct the light and the standard air chamber and the light gathering reflector of sealing, also can subtract the error that causes and proofread and correct the aging sorrow of the luminotron of measurement mechanism zero point, light source.The present invention utilizes tunable laser instrument and tuner module, can realize the absorption spectrum of tested gas and the transmitting and receiving of light beam of absorption spectrum not, thereby the opacity that has overcome environmental gas, particle and window changes the influence to accuracy of measurement, thereby can calibrate automatically, reliable and stable, accurate measure gas concentrations.
Description of drawings
Be described further below in conjunction with the probe apparatus of accompanying drawing laser gas concentration measurement equipment of the present invention:
Fig. 1 is the measurement state principle schematic of the probe apparatus of laser gas concentration measurement equipment of the present invention;
Fig. 2 is the align mode principle schematic of the probe apparatus of laser gas concentration measurement equipment of the present invention;
Fig. 3 is the structural representation of the probe apparatus of laser gas concentration measurement equipment shown in Figure 1;
Fig. 4 is the left view of Fig. 3;
Fig. 5 is the right view of Fig. 4.
Among the figure, the 1-lasing light emitter; the 2-condenser; the 3-eyepiece stalk; the 4-eyepiece; 5-eyepiece Connection Block; 6-reflective mirror installing ring; the infrared photosensitive tube of 7-; 8-photosensitive tube mount pad; 9-manages lid; the last light hole of 10-; the 11-probing shell; 12-arc light barrier; 13-first light hole; the 14-objective tube; the 15-object lens; the 16-arc groove; the vertical axle of a 17-light pipe; the 18-seal glass; 19-standard air chamber; 20-light gathering reflector seat; 21-regulates trim ring; the 22-light gathering reflector; 23-second light hole; the horizontal light hole of 24-; the translucent beam-splitter of 25-; the 26-fiber fixed seat; 27-flue gas stream; the 28-mirror base; the 29-reflective mirror; the 30-O-ring seal; the 31-cover glass; 32-is controlled tabula rasa; the 33-iron core; 34-live wire bag; the 35-threaded rod; the 36-screw; the 37-fulcrum; the 38-boss; the 39-screw; the 40-permanent magnet; the 41-magnet base; 42-U shape mouth; the 43-light-baffling device; the 44-whirligig.
Embodiment
Fig. 1 is the measurement state principle schematic of the probe apparatus of laser gas concentration measurement equipment of the present invention, Fig. 2 is the align mode principle schematic of the probe apparatus of laser gas concentration measurement equipment of the present invention, the probe apparatus of laser gas concentration measurement equipment illustrated in figures 1 and 2, mainly comprise: lasing light emitter 1, condenser 2, eyepiece 4, infrared photosensitive tube 7, object lens 15, translucent beam-splitter 25, lasing light emitter 1 is arranged on high order end, same axle horizontal at lasing light emitter 1 is disposed with condenser 2 to the right, eyepiece 4 and object lens 15, translucent beam-splitter 25 is fixed between eyepiece 4 and the object lens 15, be provided with infrared photosensitive tube 7 in the top position of translucent beam-splitter 25, between described translucent beam-splitter 25 and object lens 15, be provided with light-baffling device 43, the flashlight that reflexes to translucent beam-splitter 25 by object lens 15 can optionally be opened or block to described light-baffling device 43, lasing light emitter 1 is an infrared laser source, also can adopt long-range infrared laser source to connect optical fiber and insert.
Be provided with the standard air chamber 19 and the light gathering reflector 22 of described light-baffling device 43, sealing on the reverse extending line at described infrared photosensitive tube 7 and translucent beam-splitter 25 centers from top to bottom, the reference light that reflexes to translucent beam-splitter 25 by light gathering reflector 22 and standard air chamber 19 can optionally be opened or block to light-baffling device 43.
Described light-baffling device 43 can only reflex to the flashlight of translucent beam-splitter 25 by object lens 15 separately or reflex to the reference light of translucent beam-splitter 25 separately by light gathering reflector 22 and standard air chamber 19.
Described light-baffling device 43 mainly comprises whirligig 44 and arc shadow shield 12, and described whirligig 44 is positioned at the place ahead in probing shell 11 centre positions; Described arc shadow shield 12 is fixed on the lower right of whirligig 44, and between translucent beam-splitter 25 and object lens 15 and translucent beam-splitter 25 and standard air chamber 19.
The central axis angle at 45 of described translucent beam-splitter 25 and condenser 2 and object lens 15, the axis at infrared photosensitive tube 7 and translucent beam-splitter 25 centers becomes 90 ° angle with condenser 2 with the central axis of object lens 15.
Among Fig. 1, the center of first light hole 13 of the light barrier 12 of light-baffling device 43 just in time with the central axes of condenser 2 and object lens 15, the flashlight of translucent beam-splitter 25 will all be reflexed to by object lens 15, flashlight reflexes in the infrared photosensitive tube 7 along translucent beam-splitter 25, and infrared photosensitive tube 7 just can record the concentration of certain gas in emission this moment through pre-service and power programmer, signal conditioner, signal amplifier, demodulator of PM signal PM, V/I converter and terminal handler.And this moment light-baffling device 43 light barrier 12 reference light that light gathering reflector 22 and standard air chamber 19 reflex to translucent beam-splitter 25 is all covered, reference path is obstructed.
Among Fig. 2, second light hole 23 of the light barrier 12 of light-baffling device 43 overlaps with the central shaft of light gathering reflector 22 and standard air chamber 19, the reference light of translucent beam-splitter 25 will all be reflexed to by light gathering reflector 22 and standard air chamber 19, reference light is refracted in the infrared photosensitive tube 7 by translucent beam-splitter 25, infrared photosensitive tube 7 is through pre-service and power programmer, signal conditioner, signal amplifier, demodulator of PM signal PM, V/I converter and terminal handler just can record the value of laser instrument this moment, and with standard value relatively after, can provide the standard signal of a certain density gas to come the measured value of corrective system as a reference, improve the accuracy of measuring; And the light barrier 12 of light-baffling device 43 all covers the flashlight that object lens 15 reflex to translucent beam-splitter 25 at this moment, and the signal light path is obstructed.
Fig. 3 is the structural representation of the probe apparatus of laser gas concentration measurement equipment shown in Figure 1, and Fig. 4 is Fig. 3 left view, and Fig. 5 is the right view of Fig. 4.The probe apparatus of Fig. 3, Fig. 4 and laser gas concentration measurement equipment shown in Figure 5, mainly comprise: lasing light emitter 1, condenser 2, eyepiece 4, infrared photosensitive tube 7, hollow probing shell 11, object lens 15, translucent beam-splitter 25, its structure is: eyepiece Connection Block 5 right-to-lefts that pass on left at probing shell 11 are coaxially arranged with eyepiece 4, eyepiece stalk 3, condenser 2 and lasing light emitter 1 successively; The inner chamber of probing shell 11 is horizontal light hole 24, is fixed with reflective mirror installing ring 6 on the coaxial right side of eyepiece 4, is fixed with translucent beam-splitter 25 in the left side of reflective mirror installing ring 6; Be provided with objective tube 14 on the right side of translucent beam-splitter 25, the right side of objective tube 14 inner chambers is provided with object lens 15, the central axis angle at 45 of translucent beam-splitter 25 and condenser 2 and object lens 15; In horizontal light hole 24, and be provided with light hole 10 directly over the translucent beam-splitter 25, above last light hole 10, be provided with pipe and cover 9, managing and cover 9 top and be provided with photosensitive tube mount pad 8, be provided with infrared photosensitive tube 7 in the photosensitive tube mount pad 8; In horizontal light hole 24, and under translucent beam-splitter 25, be provided with vertical light pipe 17, be connected with the standard air chamber 19 of sealing under the vertical light pipe 17, be provided with light gathering reflector seat 20 at standard air chamber 19, be provided with light gathering reflector 22 in the light gathering reflector seat 20 from top to bottom and regulate pressure valve 21; Right side and bottom at probing shell 11 are provided with arc groove 16, and arc groove 16 is between translucent beam-splitter 25 and object lens 15, also between standard air chamber 19 and translucent beam-splitter 25; The axis at infrared photosensitive tube 7 and translucent beam-splitter 25 centers becomes 90 ° angle with condenser 2 with the central axis of object lens 15.
In described arc groove 16, be provided with the light barrier 12 of the light-baffling device 43 that can rotate along arc groove 16, described light-baffling device 43 mainly comprises: described light-baffling device 43 mainly comprises whirligig 44 and arc shadow shield 12, and described whirligig 44 is positioned at the place ahead in probing shell 11 centre positions; Described arc shadow shield 12 is fixed on the lower right of whirligig 44, and between translucent beam-splitter 25 and object lens 15 and translucent beam-splitter 25 and standard air chamber 19.The right side of light barrier 12 is provided with first light hole 10, and its lower left quarter is provided with second light hole 23.
Whirligig 44 structures are: shadow shield 12 is by flat board perpendicular with it and boss 38, control tabula rasa 32 is fixed on the boss 38 by screw 39, be set with fulcrum 37 in the axis hole of boss 38, the left end of fulcrum 37 is a threaded rod 35, threaded rod 35 is screwed in the screw 36 of the probing shell 11 on the left of it, be provided with a U-shaped mouth 42 in the middle of the control mating plate 32,1 magnet base 41 respectively is installed about the inboard of U-shaped mouth 42, permanent magnet 40 is installed on the magnet base 41, U-shaped mouth 42 is arranged on the two ends of iron core 33 and corresponding with the two ends of iron core 33, and iron core 33 is with the place aheads that fix on probing shell 11 centre positions.
The left end of permanent magnet 40 and the iron core 33 in left side is mutually during adhesive among Fig. 5, arc shadow shield 12 turns clockwise around boss 38, first light hole 13 of arc shadow shield 12 communicates with horizontal light hole 24, second light hole 23 vertical optical axis 17 that staggers, and block vertical optical axis 17 by other entity part of arc shadow shield 12, carry out the measurement of gas concentration this moment, when the right-hand member of the permanent magnet 40 on the right side among the figure and iron core 33 mutually during adhesive, arc shadow shield 12 is rotated counterclockwise around boss 38, second light hole 23 of arc shadow shield 12 communicates with vertical optical axis 17, and stagger horizontal light hole 24 and block vertical light hole 24 by other entity part of arc shadow shield 12 of first light hole 13 carries out the correction of system this moment.
Claims (6)
1, the probe apparatus of laser gas concentration measurement equipment, mainly comprise: lasing light emitter (1), condenser (2), eyepiece (4), infrared photosensitive tube (7), object lens (15), translucent beam-splitter (25), lasing light emitter (1) is arranged on high order end, same axle horizontal at lasing light emitter (1) is disposed with condenser (2) to the right, eyepiece (4) and object lens (15), translucent beam-splitter (25) is fixed between eyepiece (4) and the object lens (15), be provided with infrared photosensitive tube (7) in the top position of translucent beam-splitter (25), it is characterized in that: be provided with light-baffling device (43) between translucent beam-splitter (25) and the object lens (15);
The flashlight that reflexes to translucent beam-splitter (25) by object lens (15) can optionally be opened or block to described light-baffling device (43).
2, the probe apparatus of laser gas concentration measurement equipment according to claim 1, it is characterized in that: be provided with the standard air chamber (19) and the light gathering reflector (22) of described light-baffling device (43), sealing on the reverse extending line at infrared photosensitive tube (7) and translucent beam-splitter (25) center from top to bottom, the reference light that reflexes to translucent beam-splitter (25) by light gathering reflector (22) and standard air chamber (19) can optionally be opened or block to light-baffling device (43).
3, the probe apparatus of laser gas concentration measurement equipment according to claim 2 is characterized in that: light-baffling device (43) can only reflex to the flashlight of translucent beam-splitter (25) by object lens (15) separately or reflex to the reference light of translucent beam-splitter (25) separately by light gathering reflector (22) and standard air chamber (19).
4, the probe apparatus of laser gas concentration measurement equipment according to claim 3, it is characterized in that described light-baffling device (43) mainly comprises: whirligig (44) and arc shadow shield (12), described whirligig (44) is positioned at the place ahead in probing shell (11) centre position; Described arc shadow shield (12) is fixed on the lower right of whirligig (44), and is positioned between translucent beam-splitter (25) and object lens (15) and translucent beam-splitter (25) and the standard air chamber (19).
5, according to the probe apparatus of any described laser gas concentration measurement equipment of claim 1-4, it is characterized in that: translucent beam-splitter (25) becomes 30 °～150 ° angle with condenser (2) with the central axis of object lens (15), and the axis at infrared photosensitive tube (7) and translucent beam-splitter (25) center becomes 30 °～150 ° angle with condenser (2) with the central axis of object lens (15).
6, according to the probe apparatus of any described laser gas concentration measurement equipment of claim 1-4, it is characterized in that: at 45 or 135 ° the angle of the central axis of translucent beam-splitter (25) and condenser (2) and object lens (15), the axis at infrared photosensitive tube (7) and translucent beam-splitter (25) center becomes 90 ° angle with the central axis of condenser (2) and object lens (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100550472A CN101290290A (en) | 2008-06-04 | 2008-06-04 | Laser gas concentration measurement equipment probe device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100550472A CN101290290A (en) | 2008-06-04 | 2008-06-04 | Laser gas concentration measurement equipment probe device |
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| Publication Number | Publication Date |
|---|---|
| CN101290290A true CN101290290A (en) | 2008-10-22 |
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| CNA2008100550472A Pending CN101290290A (en) | 2008-06-04 | 2008-06-04 | Laser gas concentration measurement equipment probe device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104897591A (en) * | 2015-06-08 | 2015-09-09 | 苏州谱道光电科技有限公司 | Sample measuring device |
| CN104897610A (en) * | 2015-05-26 | 2015-09-09 | 中国科学院长春光学精密机械与物理研究所 | Rotary prism type multi-component trace gas concentration measuring device |
| CN107389615A (en) * | 2016-12-20 | 2017-11-24 | 苏州赛德福科学仪器有限公司 | A kind of evaporation optical detection device and the evaporative light measuring method based on the device |
-
2008
- 2008-06-04 CN CNA2008100550472A patent/CN101290290A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104897610A (en) * | 2015-05-26 | 2015-09-09 | 中国科学院长春光学精密机械与物理研究所 | Rotary prism type multi-component trace gas concentration measuring device |
| CN104897610B (en) * | 2015-05-26 | 2017-12-26 | 中国科学院长春光学精密机械与物理研究所 | A kind of more component trace gas concentration measurement apparatus of rotating prism formula |
| CN104897591A (en) * | 2015-06-08 | 2015-09-09 | 苏州谱道光电科技有限公司 | Sample measuring device |
| CN104897591B (en) * | 2015-06-08 | 2018-09-21 | 苏州谱道光电科技有限公司 | Sample measuring device |
| CN107389615A (en) * | 2016-12-20 | 2017-11-24 | 苏州赛德福科学仪器有限公司 | A kind of evaporation optical detection device and the evaporative light measuring method based on the device |
| CN107389615B (en) * | 2016-12-20 | 2020-03-24 | 苏州赛德福科学仪器有限公司 | Evaporation light detection device and evaporation light measurement method based on same |
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Open date: 20081022 |