CN203376236U - Optical table of transmission type smokemeter - Google Patents
Optical table of transmission type smokemeter Download PDFInfo
- Publication number
- CN203376236U CN203376236U CN201320486567.5U CN201320486567U CN203376236U CN 203376236 U CN203376236 U CN 203376236U CN 201320486567 U CN201320486567 U CN 201320486567U CN 203376236 U CN203376236 U CN 203376236U
- Authority
- CN
- China
- Prior art keywords
- pipeline
- branch
- lens
- optical table
- airflow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Images
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
- Optical Measuring Cells (AREA)
Abstract
The utility model relates to an optical table of a transmission type smokemeter. The optical table of the transmission type smokemeter comprises a draught fan, a detection pipeline, an air chamber pipeline and an optoelectronic detection unit, wherein a smoke inlet and an view port are formed in the lateral wall of the draught fan and in the lateral wall of the detection pipeline respectively, the optoelectronic detection unit comprises a support, a collimating lens, a convergence lens and a photodiode, a first branch airflow pipeline and a second branch airflow pipeline are arranged on the outer lateral wall of the detection pipeline, an airflow inlet of the first branch airflow pipeline is connected with an outlet of the draught fan, the first branch airflow pipeline and the second branch airflow pipeline extend to the support, an airflow outlet is formed between the convergence lens and the view port and is connected with the second branch airflow pipeline, and the second branch airflow pipeline is connected with the first branch airflow pipeline. According to the optical table of the transmission type smokemeter, due to the fact that a stable air vortex is formed in the surface close to the collimating lens and the convergence lens, direct contact between smoke discharged by an engine which uses oil gas and the surfaces of the lenses can be effectively reduced, and the cleaning cycle of the surfaces of the lenses can be prolonged greatly.
Description
Technical field
The utility model relates to a kind of vehicle exhaust flue gas measurement mechanism.
Background technology
Granular material discharged concentration during compression ignition engine discharges pollutants detects and usually adopts transmission-type smoke meter, utilizes the transmission coefficient of flue gas, determines particle concentration.Transmission-type smoke meter is comprised of sampling module, measurement module, control display module etc., and after start, at first well heater heats air chamber, and temperature sensor detects 75 ℃ of rear fans of air chamber temperature arrival and starts working; Blower fan forms negative pressure in air chamber, and flue gas is sucked to air chamber from draft tube; The light that light emitting diode sends becomes directional light by optical lens, after smoke-logged air chamber, then focuses on photoelectric device by optical lens; Photoelectric device transfers light signal to electric signal, by the transmission coefficient of the known flue gas of Beer-Lambert theorem.System is mainly by sampling probe, sampling catheter and bleeding point, from automobile exhaust pipe, to collect to take out exhaust contaminant, through sending into air chamber.The exhaust gas sampling system should be corrosion-resistant, and material therefor should be high temperature resistant.Measurement module comprises optical table and metering circuit two parts, its Main Function is that the flue gas to vehicular emission carries out continuous coverage, the variation of dynamic reflection exhaust contaminant, and measurement result is passed to and controlled display part and divide and shown, this is the topmost ingredient of instrument, and the blower fan of optical table both sides (centrifugal blower) is blowing outwards, forms negative pressure, enter air chamber discharge flue gas from the draft tube position under its effect, to two side flow.
Owing to flue gas, direct contact of part being arranged, contain oil gas and carbon granule thing due to collimation lens in optical table and plus lens in flue gas, the as easy as rolling off a log surface at light emitting diode collimation lens and photodiode plus lens of this potpourri forms deposition.If these two lens surfaces have cover glass, on the surface of cover glass, form the dirt deposition, the light of light emitting diode outgoing is caused to decay, service time, slightly length will cause the too weak and cisco unity malfunction of the signal received on photodiode.
Summary of the invention
In order to solve above-mentioned technical matters, the purpose of this utility model is to provide a kind of optical table of transmission-type smoke meter, this optical table forms stable air-flow whirlpool on the surface near collimation lens and plus lens, can effectively reduce the engine discharge flue gas that contains oil gas and directly contact with lens surface, the surface cleaning cycle can extend greatly.
In order to realize above-mentioned purpose, the utility model has adopted following technical scheme:
A kind of optical table of transmission-type smoke meter, this platform comprises blower fan, detect pipeline, air chamber pipeline and photodetector unit, blower fan, detect pipeline and photodetector unit and be respectively two covers, detect the two ends that pipeline is separately positioned on the air chamber pipeline, the centre of air chamber pipeline is provided with smoke inlet pipe, the air flow inlet of the detection pipeline of both sides is connected with described blower fan respectively, and be respectively equipped with smoke air inlet and observation panel at two sidewalls that detect pipeline, described air chamber pipeline is connected with smoke air inlet, described photodetector unit comprises bearing, collimation lens, plus lens and photodiode, bearing is provided with mounting hole, photodiode is arranged on the outer end of mounting hole, described collimation lens and collimation lens are arranged in mounting hole, the inner of mounting hole is connected with described observation panel, the lateral wall that detects pipeline is provided with first branch's airflow pipeline and second branch's airflow pipeline, the air flow inlet connecting fan outlet of first branch's airflow pipeline, first branch's airflow pipeline and second branch's airflow pipeline extend to bearing, and be provided with air stream outlet between plus lens and observation panel, air stream outlet is connected with second branch's airflow pipeline, second branch's airflow pipeline connects described first branch's airflow pipeline.
As preferably, the sidewall of described detection pipeline is provided with connector, and bearing is fixedly installed on connector, and described observation panel is arranged in connector, and air stream outlet is arranged on the middle part of connector.
As preferably, described connector, bearing and air chamber pipeline adopt identical section bar, the center of described section bar is provided with the first through hole, four bights at section bar are respectively equipped with the lattice framing that is " L " type, and four lattice framings are symmetrical arranged respectively separately, and the outboard end of lattice framing is provided with the second through hole, the second through hole forms open slot towards the lateral opening of both sides, both sides up and down at section bar are respectively equipped with raised line, and two raised lines are symmetrical arranged, and are provided with third through-hole on raised line.The utility model, owing to having adopted identical section bar to make connector, bearing and air chamber pipeline, is realized standardized production, and described section bar can realize that various ways connects, and has greatly improved the efficiency of producing and the accuracy of connection.
As preferably, the outside of described air chamber pipeline is provided with heating arrangement, and described heating arrangement is axially fixed in the groove that raised line and lattice framing form.
As preferably, the middle part of described air chamber pipeline is fixed with fixed head by screw, and fixed head is plugged in open slot, and described smoke inlet pipe is set on fixed head.
As preferably, the inner end of described bearing is provided with the lens installing port, and the outer end of connector is provided with the lens socket, and described collimation lens is arranged in the lens installing port, and plus lens is arranged in the lens socket.。
As preferably, between described bearing and connector, by four the second through holes, bolt being set, be fixedly connected with.
As preferably, the both sides of described detection pipeline are respectively equipped with mounting groove, are inserted with branch's air-flow pipe fitting in mounting groove, and described first branch's airflow pipeline and second branch's airflow pipeline are arranged in branch's air-flow pipe fitting.
The utility model is owing to having adopted above-mentioned technical scheme, because the surface near collimation lens and plus lens forms stable air-flow whirlpool, can effectively reduce the engine discharge flue gas that contains oil gas and directly contact with lens surface, the surface cleaning cycle can extend greatly.In addition, the utility model has adopted the processing of standardization part, has simplified the structure of product, has improved the efficiency of production and the accuracy of connection.
The accompanying drawing explanation
Fig. 1 is the structural representation of just cuing open of the present utility model.
Fig. 2 is front view of the present utility model.
The vertical view that Fig. 3 is Fig. 2.
The right view that Fig. 4 is Fig. 2.
Fig. 5 is A-A cut-open view in Fig. 2.
Fig. 6 is B-B cut-open view in Fig. 2.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is made a detailed explanation.
The optical table of a kind of transmission-type smoke meter as shown in Fig. 1 ~ Fig. 4, this platform comprises blower fan 1, detects pipeline 2, air chamber pipeline 3 and photodetector unit, blower fan 1, detection pipeline 2 and photodetector unit are respectively two covers, detect the two ends that pipeline 2 is separately positioned on air chamber pipeline 3, the centre of air chamber pipeline 3 is provided with smoke inlet pipe 11.The center of the section bar that described air chamber pipeline 3 adopts is provided with the first through hole 31, four bights at section bar are respectively equipped with the lattice framing 32 that is " L " type, article four, lattice framing 32 is symmetrical arranged respectively separately, the outboard end of lattice framing 32 is provided with the second through hole 33, the second through hole 33 forms open slot 34 towards the lateral opening of both sides, be respectively equipped with 35, two raised lines 35 of raised line in the both sides up and down of section bar and be symmetrical arranged, be provided with third through-hole 36 on raised line 35.The outside of air chamber pipeline 3 is provided with heating arrangement, and described heating arrangement is axially fixed in the groove of raised line 35 and lattice framing 32 formation.The middle part of air chamber pipeline 3 is fixed with fixed head 10 by screw, and fixed head 10 is plugged in open slot 34, and described smoke inlet pipe 11 is set on fixed head 10.
As shown in Figure 1, the air flow inlet 21 of the detection pipeline 2 of both sides is connected with described blower fan 1 respectively, and is respectively equipped with smoke air inlet 22 and observation panel 23 at two sidewalls that detect pipeline 2, and described air chamber pipeline 3 is connected with smoke air inlet 22.Described photodetector unit comprises bearing 4, collimation lens 7, plus lens 8 and photodiode 6, bearing 4 is provided with mounting hole, photodiode 6 is arranged on the outer end of mounting hole, described collimation lens 7 and collimation lens 7 are arranged in mounting hole, and the inner of mounting hole is connected with described observation panel 23.As shown in Figure 1, the sidewall of described detection pipeline 2 is provided with connector 5, and connector 5 and bearing 4 all adopt the section bar identical with air chamber pipeline 3, between bearing 4 and connector 5 by being fixedly connected with at four interior bolts that arrange of the second through hole 33.And be provided with the lens installing port at the inner end of bearing 4, and the outer end of connector 5 is provided with the lens socket, and described collimation lens 7 is arranged in the lens installing port, and plus lens 8 is arranged in the lens socket.
As Fig. 1, Fig. 2, Fig. 5, the both sides of detecting pipeline 2 shown in Fig. 6 are respectively equipped with mounting groove 24, be inserted with branch's air-flow pipe fitting 9 in mounting groove 24, be provided with first branch's airflow pipeline 91 and second branch's airflow pipeline 92 in branch's air-flow pipe fitting 9, air flow inlet connecting fan 1 outlet of first branch's airflow pipeline 91, first branch's airflow pipeline 91 and second branch's airflow pipeline 92 extend to bearing 4, and be provided with air stream outlet 93 between the plus lens 8 of connector 5 and observation panel 23, air stream outlet 93 is connected with second branch's airflow pipeline 92, second branch's airflow pipeline 92 connects described first branch's airflow pipeline 91.
Claims (8)
1. the optical table of a transmission-type smoke meter, this platform comprises blower fan (1), detect pipeline (2), air chamber pipeline (3) and photodetector unit, blower fan (1), detect pipeline (2) and photodetector unit and be respectively two covers, detect the two ends that pipeline (2) is separately positioned on air chamber pipeline (3), the centre of air chamber pipeline (3) is provided with smoke inlet pipe (11), the air flow inlet (21) of the detection pipeline (2) of both sides is connected with described blower fan (1) respectively, and be respectively equipped with smoke air inlet (22) and observation panel (23) at two sidewalls that detect pipeline (2), described air chamber pipeline (3) is connected with smoke air inlet (22), described photodetector unit comprises bearing (4), collimation lens (7), plus lens (8) and photodiode (6), bearing (4) is provided with mounting hole, photodiode (6) is arranged on the outer end of mounting hole, described collimation lens (7) and collimation lens (7) are arranged in mounting hole, the inner of mounting hole is connected with described observation panel (23), it is characterized in that: the lateral wall that detects pipeline (2) is provided with first branch's airflow pipeline (91) and second branch's airflow pipeline (92), air flow inlet connecting fan (1) outlet of first branch's airflow pipeline (91), first branch's airflow pipeline (91) and second branch's airflow pipeline (92) extend to bearing (4), and be provided with air stream outlet (93) between plus lens (8) and observation panel (23), air stream outlet (93) is connected with second branch's airflow pipeline (92), second branch's airflow pipeline (92) connects described first branch's airflow pipeline (91).
2. the optical table of a kind of transmission-type smoke meter according to claim 1, it is characterized in that: the sidewall that detects pipeline (2) is provided with connector (5), bearing (4) is fixedly installed on connector (5), described observation panel (23) is arranged in connector (5), and air stream outlet is arranged on the middle part of connector (5).
3. the optical table of a kind of transmission-type smoke meter according to claim 2, it is characterized in that: connector (5), bearing (4) and air chamber pipeline (3) adopt identical section bar, the center of described section bar is provided with the first through hole (31), be respectively equipped with the lattice framing (32) that is " L " type in four bights of section bar, article four, lattice framing (32) is symmetrical arranged respectively separately, the outboard end of lattice framing (32) is provided with the second through hole (33), the second through hole (33) forms open slot (34) towards the lateral opening of both sides, be respectively equipped with raised line (35) in the both sides up and down of section bar, article two, raised line (35) is symmetrical arranged, be provided with third through-hole (36) on raised line (35).
4. the optical table of a kind of transmission-type smoke meter according to claim 3, it is characterized in that: the outside of air chamber pipeline (3) is provided with heating arrangement (12), and described heating arrangement (12) is axially fixed in the groove of raised line (35) and lattice framing (32) formation.
5. the optical table of a kind of transmission-type smoke meter according to claim 3, it is characterized in that: the middle part of air chamber pipeline (3) is fixed with fixed head (10) by screw, fixed head (10) is plugged in open slot (34), and described smoke inlet pipe (11) is set on fixed head (10).
6. the optical table of a kind of transmission-type smoke meter according to claim 3, it is characterized in that: the inner end of bearing (4) is provided with the lens installing port, the outer end of connector (5) is provided with the lens socket, described collimation lens (7) is arranged in the lens installing port, and plus lens (8) is arranged in the lens socket.
7. according to the optical table of claim 3 or 6 described a kind of transmission-type smoke meters, it is characterized in that: between bearing (4) and connector (5), by four the second through holes (33), bolt being set, be fixedly connected with.
8. the optical table of a kind of transmission-type smoke meter according to claim 1, it is characterized in that: the both sides of detecting pipeline (2) are respectively equipped with mounting groove (24), be inserted with branch's air-flow pipe fitting (9) in mounting groove (24), described first branch's airflow pipeline (91) and second branch's airflow pipeline (92) are arranged in branch's air-flow pipe fitting (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320486567.5U CN203376236U (en) | 2013-08-09 | 2013-08-09 | Optical table of transmission type smokemeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320486567.5U CN203376236U (en) | 2013-08-09 | 2013-08-09 | Optical table of transmission type smokemeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203376236U true CN203376236U (en) | 2014-01-01 |
Family
ID=49838760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320486567.5U Withdrawn - After Issue CN203376236U (en) | 2013-08-09 | 2013-08-09 | Optical table of transmission type smokemeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203376236U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103411865A (en) * | 2013-08-09 | 2013-11-27 | 浙江浙大鸣泉科技有限公司 | Optical table of transmission-type smokemeter |
| CN104502313A (en) * | 2014-12-10 | 2015-04-08 | 浙江浙大鸣泉科技有限公司 | Novel optical platform for transmission style smoke limit meter |
-
2013
- 2013-08-09 CN CN201320486567.5U patent/CN203376236U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103411865A (en) * | 2013-08-09 | 2013-11-27 | 浙江浙大鸣泉科技有限公司 | Optical table of transmission-type smokemeter |
| CN103411865B (en) * | 2013-08-09 | 2015-11-18 | 浙江浙大鸣泉科技有限公司 | A kind of optical table of transmission-type smoke meter |
| CN104502313A (en) * | 2014-12-10 | 2015-04-08 | 浙江浙大鸣泉科技有限公司 | Novel optical platform for transmission style smoke limit meter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103411865B (en) | A kind of optical table of transmission-type smoke meter | |
| WO2016116024A1 (en) | Point-type active smoke detector with or without gas sampling tube and air sampling system | |
| CN101949788B (en) | Gas circuit system for measuring tail gas smoke intensity of diesel vehicle | |
| CN203376236U (en) | Optical table of transmission type smokemeter | |
| CN106290260A (en) | Flue gas detection device | |
| CN104502313B (en) | Novel optical platform of transmission type smoke meter | |
| CN204269517U (en) | A kind of optical table of transmission-type smoke meter | |
| CN202075156U (en) | Smoke-gas online monitoring device | |
| CN113418840B (en) | Gas detection device and vehicle-mounted tail gas detection system | |
| CN100464179C (en) | Detection platform for smokemeter | |
| CN105180377B (en) | Air purifier and its sensor wind guiding mechanism | |
| CN211235421U (en) | Monitoring device for concentration of oil smoke particles | |
| CN205172768U (en) | Vehicle air intake system and have its tractor | |
| CN204269518U (en) | A kind of signal piping device of optical table of transmission-type smoke meter | |
| KR20200001219U (en) | Particle detection sensor | |
| CN203561645U (en) | Probe for flow velocity of smoke | |
| CN201514366U (en) | Flue gas detecting system | |
| CN205137787U (en) | Air purifier and sensor wind guiding mechanism thereof | |
| CN204269516U (en) | A kind of optical table of transmission-type smoke meter of lens protection | |
| CN202229957U (en) | Wind speed stabilizing device of smoke exhaust machine | |
| CN221005165U (en) | Fume exhaust fan | |
| CN111220446A (en) | Flue gas pretreatment device and method based on permeable membrane and cold dry method fusion technology | |
| CN215866285U (en) | Particulate matter detection device | |
| CN101251274A (en) | Flat arrange type oil-smoke-discharging kitchen range | |
| CN104458524B (en) | Optical platform of transmission type smoke meter with lens protection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140101 Effective date of abandoning: 20151118 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |