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CN203414387U - Sensing device - Google Patents

Sensing device Download PDF

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Publication number
CN203414387U
CN203414387U CN201320495385.4U CN201320495385U CN203414387U CN 203414387 U CN203414387 U CN 203414387U CN 201320495385 U CN201320495385 U CN 201320495385U CN 203414387 U CN203414387 U CN 203414387U
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CN
China
Prior art keywords
sensing device
housing
light source
optical
along
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Expired - Fee Related
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CN201320495385.4U
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Chinese (zh)
Inventor
许楷楠
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Shenzhen Lead Environment Protection Engineering Co Ltd
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Individual
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Priority to CN201320495385.4U priority Critical patent/CN203414387U/en
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Abstract

The utility model relates to a sensing device, and particularly relates to a sensing device in optical detection equipment for measuring smoke particulate matter concentration. The sensing device comprises a shell which is internally provided with a light emitting system along an X-axis direction and a smoke access way along the Y-axis direction. The light emitting system sequentially comprises a light source arranged on the left side of the shell, a light path channel with a diaphragm and an extinction chamber arranged on the right side of the shell. The light path channel and the smoke access way are intersected in a scattering chamber in the middle position of the shell. Optical measuring lenses are arranged at the bottom of the scattering chamber along the Z-axis direction. The sensing device is elaborate in design, simple in structure and convenient to use, and applicable to industrialized production.

Description

A kind of sensing device
Technical field
The utility model relates to a kind of sensing device, particularly a kind of for measuring the sensing device of the optical detection apparatus of flue gas particle substrate concentration.
Background technology
Along with the raising that social development and people require living environment, city cooking fume [principal ingredient is particle and TVOC(the total volatile organism)] problem that disturbs residents is further frequent, the monitoring that oil smoke PM2.5 is polluted and the control ever more important that seems.
Present stage is for the detection of oil smoke discharge thing, particularly the method for the detection of oil smoke PM2.5 numerical value quite falls behind a lot, sampling and detection analytical cycle are long, precision is low, testing cost is high, is more difficult to carry out detection of dynamic (get back to laboratory after need to sampling in advance and carry out its mean value of analytical test again).
The inventor once invented a kind of for measuring the optical detection apparatus of flue gas particle substrate concentration, this equipment can be widely used in comprising the detection of PM2.5 numerical value in the stack gas emissions of oil smoke, but the use of its design original intention Shi Wei environmental protection administration law enforcement, whole equipment, especially wherein core component survey sensor, manufacture very accurate, thereby whole assurance device measuring precision is very high, cause cost to improve, be difficult to carry out large-scale production.
Summary of the invention
For above-mentioned the deficiencies in the prior art, it is a kind of for being widely used in measuring the sensing device of the optical detection apparatus of flue gas particle substrate concentration that the utility model provides, and this sensing device is applicable to this special flue gas that comprises sticky particle thing of kitchen fumes completely.This sensing device deft design, simple in structure, easy to use, be applicable to suitability for industrialized production.
For realizing above-mentioned technical purpose, a kind of sensing device that the utility model provides, includes housing, in housing, along X-direction, is provided with luminescent system, along Y direction, is provided with flue gas access way; Described luminescent system comprises the light source that is located at housing left side successively, with the path channels of diaphragm and be located at the delustring chamber on housing right side; Described path channels and described flue gas access way intersect at the scattering chamber of housing medium position, and the bottom in described scattering chamber along Z-direction is laid with optical measurement lens.
Further, described housing is divided into upper shell, lower house along the crossing plane of path channels center line and described flue gas access way center line.
Further, the indoor cone structure relative with described light source that be provided with of described delustring.
Further, be provided with relative two pairs of dividing plates with groove on upper-lower casing, the through hole being positioned in path channels that groove forms relatively forms diaphragm.
Further, be respectively equipped with two lens supporting plates in upper-lower casing, for placing optical lens, the light that light source is sent focuses on arrangement.
Further, on housing, be also provided with sheath air pipe passway, by the sheath tracheae of laying, sheath conductance can be entered to optical unit end face, for each optical unit is protected.
Further, described light source is LED lamp.
Further, be positioned at light source front end place be provided with one and get optical channel at lower house, in channel bottom, be provided with an optical lens, getting before optical lens is provided with a light intensity regulating device on optical channel.
Further, described light intensity regulating device is the screw being installed in housing screw, and screw is positioned at the measurement of light source light intensity and gets on optical channel.
Compared with prior art, the utility model is simple in structure, easy to use, is applicable to suitability for industrialized production.
Accompanying drawing explanation
Fig. 1 is the three-dimensional view of the utility model one preferred embodiment.
Fig. 2 is the STRUCTURE DECOMPOSITION schematic diagram of Fig. 1.
Fig. 3 is along the sectional view of A-A in Fig. 2.
Fig. 4 is along the sectional view of B-B in Fig. 2.
Fig. 5 is the three-dimensional view of upper shell 11 in Fig. 2.
Fig. 6 is the three-dimensional view of lower house 12 in Fig. 2.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described further.
Fig. 1 is the three-dimensional view of a preferred embodiment of the utility model.Fig. 2 is its STRUCTURE DECOMPOSITION schematic diagram.As shown in the figure, sensing device of the present utility model includes the housing 10 being roughly square, and is divided into upper shell 11, lower house 12.In housing 10, be provided with two orthogonal annulars (circle) passage, wherein, the passage of X axis is path channels 102, and the passage of Y-axis is flue gas access way 200.Upper-lower casing 11,12Yi channel center axes intersect face is interphase, that is to say, housing 10 is divided into upper shell 11, lower house 12 along the crossing plane of path channels center line and described flue gas access way center line.This means that upper-lower casing inside is symmetrical set substantially.For convenience of understanding, this instructions conventionally can combine the structure of upper-lower casing to be described.During concrete application, upper casing 11 and lower casing 12 are fixing by the adapting device sealing on surface of contact.
Fig. 3 is along the sectional view of A-A in Fig. 2.Fig. 4 is along the sectional view of B-B in Fig. 2.As shown in the figure, in housing 10 inside left, be provided with LED light source screens 117,127, when mounted, inwardly, the terminals of afterbody are exposed at housing 10 outsides to head to LED light source 101, to facilitate wiring.
In the inner rightmost side of housing 10, it is delustring chamber 103, on upper shell 11, be provided with a cone structure 111 relative with LED light source 101 heads, the luminescent center of its cone point and LED light source 101, and the axis overlaid of optical channel 102, can effectively eliminate the light through scattering chamber 300.LED light source 101, optical channel 102, the luminescent system that the cone structure 111 in delustring chamber 103 forms in the utility model.
Fig. 5 is that three-dimensional view, Fig. 6 of upper shell 11 is the three-dimensional view of lower house 12.As shown in the figure, in housing 11,12 inside, at the front end of LED light source 101 rear ends, cone structure 111, be respectively equipped with two pairs of relative dividing plates 112,113 with groove; 122,123, groove light relative and that composition light path through hole 104,105 sends for LED light source 101 on two pairs of dividing plates passes through, these two through holes 104,105 are as diaphragm, can effectively eliminate the parasitic light of light source, thereby reduce the background of scattering chamber 300 inscattering light, improve the measuring accuracy of the utility model and measuring equipment.
Again as shown in the figure, flue gas access way 200 is located at the roughly centre position of housing 10, setting vertical with optical channel 102, both intersect at scattering chamber 300, in the scattering chamber 300 of lower house 12, be equipped with optical device, include two collector lens groups that are oppositely arranged 404,405, lens chuck ring 406 and measurement lens 407.Measure and on lens 407, can set the photosensitive components and parts (not shown) that all kinds of measurement temperature, humidity, air pressure are used.Convex lens group 404,405 can be by the convergence of rays in scattering chamber the sensitizing range to the photosensitive components and parts for measuring.For the object of saving cost or simplified structure, for the higher application scenario of some Particulate Pollution substrate concentrations, this convex lens lens assembly device also can be simplified or be omitted.
When the utility model in use, the light that LED light source 101 sends enters scattering chamber 300 along the through hole 104 in path channels 102, if intersect with flue gas, scattering can occur, scattered beam is interior in scattering chamber 300 to be focused on and arranges through lens combination 404,405, photosensitive components and parts (not indicating on figure) through measuring on lens 407 record corresponding data, these data are through digital-to-analog conversion, enter data processing centre (DPC) treated, can realize the isoparametric measurement of temperature, humidity and air pressure to flue gas, these supplemental characteristics can directly be exported by data-interface.The part not light of scattering will enter delustring chamber 103 after continuing across through hole 105.Wherein, dividing plate 122,123 forms the cavity wall of delustring chamber 103.
Because light source in the utility model 101 adopts LED lamp, its light relatively spreads, degree of focus is inadequate, even without flue gas gas, enter scattering chamber 300 when interior, also can there is certain scattering, photosensitive components and parts also can measure certain luminous flux (being called bias light), in order to eliminate its impact on measurement result, the utility model arranges one and gets optical channel 121 by be positioned at light source 101 front end places at lower house 12, one plane surveying optical lens 401 and photosensitive components and parts (on figure, not indicating) are set getting optical channel 121 bottoms, can obtain corresponding luminous flux data.Optical lens 401 plays printing opacity and airtight effect.
By getting before optical lens 401, on optical channel, be provided with a light intensity regulating device 106, for light source luminescent intensity is carried out to normalizing adjusting, can control and enter the light intensity size of measuring lens, thereby automatically adjust this and locate the luminous flux parameter that photosensitive components and parts are surveyed, (bias light) parameter that it is recorded with optical lens 402 places is identical, thereby offsets the impact of bias light on measurement result.The process of adjusting light intensity regulating device 106, also can be called zeroing process.
In the present embodiment, light intensity regulating device 106, for being installed in the screw 51 in housing screw 126, by adjusting the depth and the registration of getting optical channel 121 of screw 51, can be adjusted the luminous flux through optical lens 401.
In addition, in upper-lower casing, be respectively equipped with two lens supporting plates 114,115,124,125, be used for placing the optical lens group 402,403 vertical with path channels 102, realize the work such as the light beam that light source 101 is sent expands, shaping, focusing, to improve measuring accuracy and accuracy.For the object of saving cost, for the higher application scenario of some Particulate Pollution substrate concentrations, this optical lens device can omit.
Owing to there being more optical component in the utility model; if with flue gas Long contact time; optical mirror plane can be contaminated; the accuracy of measurement result will be reduced greatly; therefore be provided with especially in the present embodiment sheath gas protective device; sheath tracheae 201 imports by the sheath air pipe inlet 129 arranging on housing; 20 of sheath air pipe passways on housing 11,12 is interior are set to each optical unit; especially the end face of each optical lens near; comprise the collector lens group 404,405 in sheath air cavity 300, near the lens combination 402,403 on optical channel 102.Pass into after sheath gas, can form protection to each optical unit, prevent that flue gas from producing and polluting the end face of optical unit.
Because upper-lower casing almost symmetry arranges, so the groove part arranging on the housing periphery end face in sheath air pipe passway 20(figure) on the more end face that is arranged on upper-lower casing 11,12.This plan of establishment can realize sheath gas protection effect (protected optical unit end face not polluted by sample flue gas corrosion, and avoided the impact of sheath gas self on measurement result completely), is also convenient to installing of sheath tracheae 201.
According to description above, in the equipment of known the utility model mainly for detection of the particle concentration in flue gas, be certainly also not limited at flue gas inspection category equal available the utility model in the particle concentration checkout equipment in all genus atmosphere.The utility model can be used in conjunction with various types of sampling apparatuses.
Use particle concentration checkout equipment of the present utility model, sampling and measuring process can be organically combined, the scene of being convenient to is measured and is enforced the law, and adopts modular design, is convenient to Function Extension; With self-adjusting (zeroing) function, measuring accuracy improves greatly.
Although the utility model is described to singularity to a certain degree, please understands current disclosure information and only adopt diagram.The in the situation that of deviation affects Spirit Essence of the present utility model not and scope, when making and arranging the details of various parts, can take a series of change measure.

Claims (9)

1. a sensing device, is characterized in that, includes housing, in housing, along X-direction, is provided with luminescent system, along Y direction, is provided with flue gas access way; Described luminescent system comprises the light source that is located at housing left side successively, with the path channels of diaphragm and be located at the delustring chamber on housing right side; Described path channels and described flue gas access way intersect at the scattering chamber of housing medium position, and the bottom in described scattering chamber along Z-direction is laid with optical measurement convex lens group.
2. sensing device according to claim 1, is characterized in that, described housing is divided into upper shell, lower house along the crossing plane of path channels center line and described flue gas access way center line.
3. sensing device according to claim 2, is characterized in that, the indoor cone structure relative with described light source that be provided with of described delustring.
4. sensing device according to claim 2, is characterized in that, is provided with relative two pairs of dividing plates with groove on upper-lower casing, and the through hole being positioned in path channels that groove forms relatively forms diaphragm.
5. sensing device according to claim 4, is characterized in that, is respectively equipped with two lens supporting plates in upper-lower casing, and for placing optical lens group, the light that light source is sent focuses on arrangement.
6. sensing device according to claim 5, is characterized in that, is also provided with sheath air pipe passway on housing, sheath conductance can be entered to optical unit end face, for each optical unit is protected by the sheath tracheae of laying.
7. according to the sensing device described in arbitrary claim in claim 1 to 6, it is characterized in that, described light source is LED lamp.
8. sensing device according to claim 7, it is characterized in that, at lower house, be positioned at the optical channel of getting that light source front end place is provided with a measurement light source intensity, in channel bottom, be provided with a plane optical lens, getting before optical lens is provided with a light intensity regulating device on optical channel.
9. sensing device according to claim 8, is characterized in that, described light intensity regulating device is the screw being installed in housing screw, and screw is positioned at the measurement of light source light intensity and gets on optical channel.
CN201320495385.4U 2013-08-14 2013-08-14 Sensing device Expired - Fee Related CN203414387U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320495385.4U CN203414387U (en) 2013-08-14 2013-08-14 Sensing device

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Application Number Priority Date Filing Date Title
CN201320495385.4U CN203414387U (en) 2013-08-14 2013-08-14 Sensing device

Publications (1)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105784552A (en) * 2014-12-24 2016-07-20 周志斌 Particle concentration sensor and particle concentration detection method
CN106290089A (en) * 2015-05-12 2017-01-04 杜晨光 A kind of high-precision miniaturization particulate matter sensors
CN109655388A (en) * 2019-01-23 2019-04-19 北京雪迪龙科技股份有限公司 Light scattering device, measuring concentration of granules in certain system and measurement method
EP3483586A4 (en) * 2016-07-06 2020-05-06 Dongguan Lifa Air Technology Limited Pm2.5 measurement device
CN111307677A (en) * 2019-11-22 2020-06-19 北京雪迪龙科技股份有限公司 Laser front scattering particulate matter monitoring device
CN112924344A (en) * 2021-01-22 2021-06-08 中煤科工集团重庆研究院有限公司 Monitoring system and method for acquiring underground coal mine dust concentration based on image

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105784552A (en) * 2014-12-24 2016-07-20 周志斌 Particle concentration sensor and particle concentration detection method
CN105784552B (en) * 2014-12-24 2019-08-06 周志斌 Particle concentration detection method
CN106290089A (en) * 2015-05-12 2017-01-04 杜晨光 A kind of high-precision miniaturization particulate matter sensors
EP3483586A4 (en) * 2016-07-06 2020-05-06 Dongguan Lifa Air Technology Limited Pm2.5 measurement device
CN109655388A (en) * 2019-01-23 2019-04-19 北京雪迪龙科技股份有限公司 Light scattering device, measuring concentration of granules in certain system and measurement method
CN111307677A (en) * 2019-11-22 2020-06-19 北京雪迪龙科技股份有限公司 Laser front scattering particulate matter monitoring device
CN112924344A (en) * 2021-01-22 2021-06-08 中煤科工集团重庆研究院有限公司 Monitoring system and method for acquiring underground coal mine dust concentration based on image

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
ASS Succession or assignment of patent right

Owner name: SHENZHEN LIDE ENVIRONMENTAL PROTECTION ENGINEERING

Free format text: FORMER OWNER: XU KAINAN

Effective date: 20150424

C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20150424

Address after: 518000 Guangdong Province, Shenzhen city Longhua District Guanlan community tourism Da BU Xiang Road No. 1301-51 130

Patentee after: SHENZHEN LEAD ENVIRONMENT PROTECTION ENGINEERING CO., LTD.

Address before: 518000, No. 201, second floor, building sixth, Fei Fei industrial park, No. 218 Renmin Road, Longhua street, Shenzhen, Guangdong, Baoan District

Patentee before: Xu Kainan

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140129

Termination date: 20160814