CN201210141Y - Laser gas concentration measuring instrument - Google Patents
Laser gas concentration measuring instrument Download PDFInfo
- Publication number
- CN201210141Y CN201210141Y CNU2008200774799U CN200820077479U CN201210141Y CN 201210141 Y CN201210141 Y CN 201210141Y CN U2008200774799 U CNU2008200774799 U CN U2008200774799U CN 200820077479 U CN200820077479 U CN 200820077479U CN 201210141 Y CN201210141 Y CN 201210141Y
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- Prior art keywords
- splitter
- light
- gas concentration
- concentration measurement
- probing shell
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Abstract
The utility model discloses a laser gas concentration measurement instrument, belonging to the technical field of gas concentration measurement, which is to solve the problem of providing a laser gas concentration measurement instrument which has automatic calibration, stability and reliability and can accurately measure the gas concentration. The utility model adopts the proposal that the laser gas concentration measurement instrument mainly comprises a probe device and a measurement circuit, wherein, the probe device has the structure that the left side of a probe casing is coaxially provided with an ocular lens, a collecting mirror and an infrared laser source sequentially from right to left; the coaxial right side of the ocular lens is fixedly provided with a semi-transparent beam-splitter; the right side of the semi-transparent beam-splitter is provided with a field lens; an infrared photosensitive tube is arranged in a transverse light hole and the right upside of the semi-transparent beam-splitter; the right side of the probe casing is provided with an arched groove; and the arched groove is internally provided with the light shield of a light shielding device which can rotate along the arched groove. The laser gas concentration measurement instrument is widely applied to various gas concentration measurement fields.
Description
Technical field
The utility model relates to a kind of laser gas concentration measurement instrument, being specifically related to a kind of laser gas Spectrum Absorption Principle of utilizing makes, concentration to 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 on-line continuous measuring equipment, belongs 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 utility model adopts semiconductor 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.
The utility model content
The utility model overcomes the defective that prior art exists, and problem to be solved is: a kind of laser gas concentration measurement instrument is provided, can calibrates automatically, reliable and stable, accurate measure gas concentrations.
In order to address the above problem, the scheme that the utility model adopts is: the laser gas concentration measurement instrument, comprise that mainly probe apparatus and metering circuit constitute, described metering circuit structure is that pre-service and power controller are connected with infrared laser source, infrared photosensitive tube and signal modulation circuit by lead, and signal modulation circuit links to each other with terminal process equipment with signal amplification circuit, signal demodulating circuit, V/I change-over circuit successively by lead; Described probe apparatus mainly comprises: infrared laser source, condenser, eyepiece, infrared photosensitive tube, hollow probing shell, object lens, translucent beam-splitter, its structure is: right-to-left is coaxially arranged with eyepiece successively in the left side of probing shell, condenser and infrared laser source, the inner chamber of probing shell is horizontal light hole, coaxial right side at eyepiece is fixed with translucent beam-splitter, right side at translucent beam-splitter is provided with object lens, in horizontal light hole, and directly over translucent beam-splitter, be provided with infrared photosensitive tube, right side at probing shell is provided with arc groove, is provided with the light barrier of the light-baffling device that can rotate along arc groove in the arc groove.
In above-mentioned horizontal light hole 24, and valve is pressed in the standard air chamber, light gathering reflector and the adjusting that are provided with sealing under translucent beam-splitter; Described arc groove can also extend to the below of probing shell, and the light barrier of light-baffling device also can extend in the arc groove of probing shell below.
Described light-baffling device mainly comprises: described light-baffling device mainly comprises whirligig and arc shadow shield, and described whirligig is positioned at the place ahead in probing shell 11 centre positions; 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, the right side of light barrier is provided with first light hole, and its lower left quarter is provided with second light hole; Described rotary device structure is: shadow shield is by flat board perpendicular with it and boss, the control tabula rasa by screw retention on boss, be set with fulcrum in the axis hole of boss, the left end of fulcrum is a threaded rod, threaded rod is screwed in the screw of the probing shell on the left of it, be provided with a U-shaped mouth in the middle of the control mating plate, 1 magnet base respectively is installed about the inboard of U-shaped mouth, permanent magnet is installed on the magnet base, the U-shaped mouth is arranged on the two ends of iron core and corresponding with the two ends of iron core, and iron core is fixed on the place ahead in probing shell centre position.
The central axis angle at 45 of above-mentioned 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 utility model laser gas concentration measurement instrument compared with prior art has following beneficial effect:
The utility model 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 the error that can cause the aging decay of the luminotron of measurement mechanism zero point, light source is proofreaied and correct.The utility model 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
Below in conjunction with accompanying drawing the utility model laser gas concentration measurement instrument is described further:
Fig. 1 is the structural representation of the utility model laser gas concentration measurement instrument;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the right view of Fig. 2.
Among the figure, 1-infrared laser source; 2-condenser; 3-eyepiece stalk; 4-eyepiece; 5-eyepiece Connection Block; 6-reflective mirror installing ring; 7-infrared photosensitive tube; 8-photosensitive tube mount pad; 9-pipe lid; 10-upward light holes; 11-probing shell; 12-arc light barrier; 13-the first light hole; 14-objective tube; 15-object lens; 16-arc groove; 17-the axle light pipe hangs down; 18-seal glass; 19-standard air chamber; 20-light gathering reflector seat; 21-adjusting trim ring; 22-light gathering reflector; 23-the second light hole; 24-laterally light holes; 25-translucent beam-splitter; 26-fiber fixed seat; 27-flue gas stream; 28-mirror base; 29-reflective mirror; 30-O-ring seal; 31-cover glass; 32-control tabula rasa; 33-iron core; 34-live wire bag; 35-threaded rod; 36-screw; 37-fulcrum; 38-boss; 39-screw; 40-permanent magnet; 41-magnet base; 42-U-shaped mouth; 43-light-baffling device; 44-whirligig; 45-pre-service and power controller; 47-signal modulation circuit; 48-signal amplification circuit; 49-signal demodulating circuit; 50-V/I change-over circuit; 51-terminal process equipment.
Embodiment
Fig. 1 is the structural representation of the utility model laser gas concentration measurement instrument, Fig. 2 is Fig. 1 left view, Fig. 3 is the right view of Fig. 2, Fig. 1, Fig. 2 and laser gas concentration measurement instrument shown in Figure 3, comprise that mainly probe apparatus and metering circuit constitute, described metering circuit structure is that pre-service and power controller 45 are connected with infrared laser source 1, infrared photosensitive tube 7 and signal modulation circuit 47 by lead, and signal modulation circuit 47 links to each other with signal amplification circuit 48, signal demodulating circuit 49, V/I change-over circuit 50 and terminal process equipment 51 successively by lead; Described probe apparatus mainly comprises: infrared laser source 1, condenser 2, eyepiece 4, infrared photosensitive tube 7, hollow probing shell 11, object lens 15, translucent beam-splitter 25, and 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 infrared laser source 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.
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; Described 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 fixed on the place ahead in 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. 3, 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 (4)
1, laser gas concentration measurement instrument, comprise that mainly probe apparatus and metering circuit constitute, described metering circuit structure is that pre-service and power controller (45) are connected with infrared laser source (1), infrared photosensitive tube (7) and signal modulation circuit (47) by lead, and signal modulation circuit (47) links to each other with signal amplification circuit (48), signal demodulating circuit (49), V/I change-over circuit (50) and terminal process equipment (51) successively by lead; It is characterized in that described probe apparatus mainly comprises: infrared laser source (1), condenser (2), eyepiece (4), infrared photosensitive tube (7), hollow probing shell (11), object lens (15), translucent beam-splitter (25), its structure is: the left side right-to-left at probing shell (11) is coaxially arranged with eyepiece (4) successively, condenser (2) and infrared laser source (1), the inner chamber of probing shell (11) is horizontal light hole (24), be fixed with translucent beam-splitter (25) on the coaxial right side of eyepiece (4), be provided with object lens (15) on the right side of translucent beam-splitter (25), in horizontal light hole (24), and directly over translucent beam-splitter (25), be provided with infrared photosensitive tube (7), be provided with arc groove (16) on the right side of probing shell (11), be provided with the light barrier (12) of the light-baffling device (43) that can rotate along arc groove (16) in the arc groove (16).
2, laser gas concentration measurement instrument according to claim 1 is characterized in that: in horizontal light hole (24), and be provided with standard air chamber (19), the light gathering reflector (22) of sealing and regulate pressure valve (21) under translucent beam-splitter (25); Described arc groove (16) can also extend to the below of probing shell (11), and the light barrier (12) of light-baffling device (43) also can extend in the arc groove (16) of probing shell (11) below.
3, laser gas concentration measurement instrument according to claim 1 and 2, it is characterized in that 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 position; Described arc shadow shield (12) is fixed on the lower right of whirligig (44), and be positioned between translucent beam-splitter (25) and object lens (15) and translucent beam-splitter (25) and the 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);
Described whirligig (44) structure is: 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 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 fixed on the place ahead in probing shell (11) centre position.
4, laser gas concentration measurement instrument according to claim 3 is characterized in that the central axis angle at 45 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 |
|---|---|---|---|
| CNU2008200774799U CN201210141Y (en) | 2008-06-04 | 2008-06-04 | Laser gas concentration measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200774799U CN201210141Y (en) | 2008-06-04 | 2008-06-04 | Laser gas concentration measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201210141Y true CN201210141Y (en) | 2009-03-18 |
Family
ID=40480880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200774799U Expired - Lifetime CN201210141Y (en) | 2008-06-04 | 2008-06-04 | Laser gas concentration measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201210141Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102535736A (en) * | 2011-12-23 | 2012-07-04 | 东南大学 | Adjustable type phase-change heat-accumulation wood structure plate suitable for emergent construction |
| CN114112963A (en) * | 2021-11-30 | 2022-03-01 | 青岛崂应海纳光电环保集团有限公司 | Gas telemetering telescope |
-
2008
- 2008-06-04 CN CNU2008200774799U patent/CN201210141Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102535736A (en) * | 2011-12-23 | 2012-07-04 | 东南大学 | Adjustable type phase-change heat-accumulation wood structure plate suitable for emergent construction |
| CN114112963A (en) * | 2021-11-30 | 2022-03-01 | 青岛崂应海纳光电环保集团有限公司 | Gas telemetering telescope |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANXI ZHONGLV ENVIRONMENTAL PROTECTION GROUP CO., Free format text: FORMER NAME: TAIYUAN ZHONGLV ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 030032 Shanxi environmental protection science and Technology Park, central street, hi tech Zone, Shanxi, Taiyuan Patentee after: Shanxi green environmental protection Group Co Ltd Address before: 030032 Shanxi environmental protection science and Technology Park, central street, hi tech Zone, Shanxi, Taiyuan Patentee before: Taiyuan Zhonglv Environmental Protection Technology Co., Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: ZHONGLV ENVIRONMENTAL PROTECTION TECHNOLOGY CO., L Free format text: FORMER OWNER: SHANXI ZHONGLV ENVIRONMENTAL PROTECTION GROUP CO., LTD. Effective date: 20120524 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120524 Address after: 030032 Shanxi environmental protection science and Technology Park, south of North Central Street, Taiyuan hi tech Zone, Shanxi Patentee after: Sinogreen Environmental Protection Science & Technology Co., Ltd. Address before: 030032 Shanxi environmental protection science and Technology Park, central street, hi tech Zone, Shanxi, Taiyuan Patentee before: Shanxi green environmental protection Group Co Ltd |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090318 |