CN110220828A - A kind of particle monitoring instrument - Google Patents
A kind of particle monitoring instrument Download PDFInfo
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- CN110220828A CN110220828A CN201910556074.6A CN201910556074A CN110220828A CN 110220828 A CN110220828 A CN 110220828A CN 201910556074 A CN201910556074 A CN 201910556074A CN 110220828 A CN110220828 A CN 110220828A
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- 239000002245 particle Substances 0.000 title claims abstract description 39
- 238000012544 monitoring process Methods 0.000 title claims abstract description 38
- 230000003287 optical effect Effects 0.000 claims abstract description 57
- 238000005259 measurement Methods 0.000 claims abstract description 18
- 230000003595 spectral effect Effects 0.000 claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 238000010586 diagram Methods 0.000 description 11
- 239000007789 gas Substances 0.000 description 11
- 239000013618 particulate matter Substances 0.000 description 8
- 239000013307 optical fiber Substances 0.000 description 6
- 238000010926 purge Methods 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000004313 glare Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 238000004092 self-diagnosis Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
- G01N15/075—Investigating concentration of particle suspensions by optical means
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The present invention discloses a kind of particle monitoring instrument.Particle monitoring instrument includes: light source module, and light source module generates light；The light that light source module projects is divided into calibration light and measurement light by spectral module；Calibration light or measurement light are blocked in light-blocking mechanism；Diffusing structure, the light that spectral module projects pass sequentially through the diaphragm of diffusing structure, the first diaphragm and the second diaphragm；Optical module is received, the light that diffusing structure projects is received；Detector determines and receives the received light ray energy of optical module.Particle monitoring instrument of the invention has pollution self-diagnostic function.
Description
Technical field
The invention belongs to environmental monitoring field more particularly to a kind of particle monitoring instruments.
Background technique
As environmentally friendly laws and regulations are increasingly stringent and progress and development of dedusting technology, organized pollution sources particulate matter
Concentration of emission it is lower and lower.There are many new online coal-burning boiler, the mean concentration of particulate emission concentration is even lower than 3mg/
m3, and have the characteristics that high temperature and humidity.This detection limit, sensitivity, repeatability, inhibition of stray light etc. to instrument proposes
Higher requirement.
Since the flue gas of equipment exhausting has the characteristics that high temperature and humidity, it is easy to form water mist on eyeglass, and adsorb dust.
On eyeglass when adhesive dust, water mist, the transmitance of eyeglass can be reduced, influences instrument normal work.Current instrument is only to flue gas
Particulate matter measures, the function without periodically carrying out pollution level test to optical system, is particularly at particulate matter survey
The function that the contaminated degree of optical element in amount room is assessed.
Summary of the invention
To solve the above-mentioned problems, the present invention proposes a kind of particle monitoring instrument, is equipped with optical path pollution level self diagnosis function
Can, realize the measurement to optical path soiling value.
The present invention provides a kind of particle monitoring instrument, comprising: light source module, the light source module generate light；It is divided mould
The light that the light source module projects is divided into calibration light and measurement light by block；Calibration light or measurement are blocked in light-blocking mechanism
Light；Diffusing structure, the light that the spectral module projects pass sequentially through the diaphragm of the diffusing structure, the first diaphragm and the
Two diaphragms；Optical module is received, the light that the diffusing structure projects is received；Detector determines the received light of the receipts optical module
Energy.
As the optional scheme of the present invention, the particle monitoring instrument further includes shell, and the shell is cavity structure, institute
It states light source module, spectral module, light-blocking mechanism to be located in the cavity of the shell, the diffusing structure is fixed on the shell
On, the receipts optical module connects the diffusing structure.
As the optional scheme of the present invention, the diffusing structure includes feeler lever, and the feeler lever is tubulose, by the feeler lever
The first diaphragm installation that one end to the other end sets gradually and is equipped with the diaphragm mounting base of diaphragm, is equipped with the first diaphragm
Seat, the second diaphragm mounting base for being equipped with the second diaphragm and receipts optical module mounting base, the receipts optical module mounting base are equipped with logical
Unthreaded hole, the receipts optical module connect the receipts optical module mounting base, the light hole and the receipts light for receiving optical module mounting base
The light well of module is opposite.
As the optional scheme of the present invention, the particle monitoring instrument further includes ligh trap cover, and the ligh trap cover includes cover
With ligh trap module, the ligh trap module is located on the inner sidewall of the cover；The cover and the receipts optical module mounting base shape
At closed cavity, the receipts optical module is located in the cavity；It is unscattered in the ligh trap module absorptiometry light
Light.
As the optional scheme of the present invention, the ligh trap module includes the convex spherical part of sloped-end and with internal thread
Trap cylinder, the convex spherical part are located in the trap cylinder.
As the optional scheme of the present invention, the convex spherical part and trap cylinder carry out blackening process.
As the optional scheme of the present invention, the particle monitoring instrument further includes flange, and the flange is tubular, is fixed on
The bottom of the shell；The diffusing structure passes through the flange, outer wall and the flange of the second diaphragm mounting base
Inner wall matches；The side wall of the flange is equipped with air inlet.
As the optional scheme of the present invention, the feeler lever of the diffusing structure is equipped with air inlet, the air inlet of the feeler lever
It is connected to the air inlet of the flange.
As the optional scheme of the present invention, the side wall of the flange is equipped with observation panel.
As the optional scheme of the present invention, the detector is located in the cavity of the shell.
The light that light source module projects is divided into calibration light and measurement light by particle monitoring instrument of the invention, passes through school
The contaminated degree of quasi-optical line light path, measurement light irradiation particulate matter scatter, receive optical module and receive measurement light
Light is scattered, can be used for the calculating of particle concentration.
Detailed description of the invention
Fig. 1 is the schematic diagram of particle monitoring instrument of the present invention.
Fig. 2 is the structural schematic diagram of particle monitoring instrument of the present invention.
Fig. 3 is the schematic diagram of light source module of the present invention.
Fig. 4 is the schematic diagram of spectral module of the present invention.
Fig. 5 is the schematic diagram of the light-blocking mechanism of the present invention.
Fig. 6 is the schematic diagram of diffusing structure of the present invention.
Fig. 7 is the schematic diagram that the present invention receives optical module.
Fig. 8 is the schematic diagram of ligh trap cover of the present invention.
Fig. 9 is the schematic diagram of flange of the present invention.
Figure 10 is purge gass gas circuit schematic diagram of the present invention.
Figure 11 is sample port schematic diagram of the present invention.
Specific embodiment
Below in conjunction with drawings and examples, a specific embodiment of the invention is described in more details, so as to energy
The advantages of enough more fully understanding the solution of the present invention and its various aspects.However, specific embodiments described below and implementation
Example is for illustrative purposes only, rather than limiting the invention.
Heretofore described " connection " unless otherwise specific regulation or is limited, should be broadly understood, can be directly
It is connected, is also possible to be connected by intermediary.In the description of the present invention, it is to be understood that, "upper", "lower", " preceding ",
The orientation or positional relationship of the instructions such as " rear ", "left", "right", " top ", " bottom end " is orientation based on the figure or position
Relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must have
There is specific orientation, be constructed and operated in a specific orientation, therefore is not considered as limiting the invention.
As illustrated in fig. 1 and 2, the particle monitoring instrument of the embodiment of the present invention by the light that light source generates be divided into calibration light and
Measure light.When carrying out self-test or calibration, measurement light is blocked, and only calibration light projects, and is received according to detector
Calibrate light energy, can measure optical path transmissivity or instrument it is linear.When carrying out the measurement of sample gas, calibration light is hidden
Gear, only measurement light project, and the particulate matter in measurement light irradiation sample gas scatters, and detector determines the energy of scattering light
Amount.Scatter the concentration positive correlation of the energy of light and the energy ratio of calibration light and particulate matter.
Particle monitoring instrument includes: light source module 100, spectral module 200, light-blocking mechanism 300, diffusing structure 400, receives light
Module 500 and detector 600.
As shown in figure 3, light source module 100 is for generating parallel rays.Light source module 100 includes Laser Slabs 101, Laser Slabs
101 be the circuit board of light source module.Laser diode 102 is mounted on Laser Slabs 101 by pedestal 103, laser diode 102
It emits beam after energization.The lower section of laser diode 102, laser diode 102 are arranged in by mounting cylinder 105 for collimating mirror 104
The light of sending forms collimated light beam injection after passing through collimating mirror 104.
As shown in figure 4, spectral module 200 includes Amici prism mounting plate 201, Amici prism mounting plate 201 be can be selected not
Rust steel material, is easily installed fixation.Amici prism 202 is mounted on Amici prism mounting plate 201.What light source module 100 projected
Light, which is radiated on Amici prism 202, is divided into two bundles parallel light, and a branch of as calibration light, another Shu Zuowei measures light
Line.
Amici prism mounting plate 201 is equipped with multiple studs 203, be arranged on stud 203 elastic component (be not shown in the figure,
Such as spring).Nut 204 is mounted on stud 203.Optionally, 101 sets of Laser Slabs on stud 203, elastic component is to Laser Slabs
101 play a supporting role, and nut 204 is pressed on Laser Slabs 101.204 adjustable light sources module 100 of adjusting nut is irradiant
Angle.
As shown in figure 5, light-blocking mechanism 300 is fixed on Amici prism mounting plate 201.Light-blocking mechanism 300 includes electromagnet
301, the iron core of electromagnet 301 is equipped with light barrier 303 in swing arm 302 as swing arm 302.The lower section of electromagnet 301 is equipped with forever
Magnet (not shown), when 301 no power of electromagnet, permanent magnet attracts swing arm 302 to be rocked to lower section, and electromagnet 301 is powered
Afterwards, the magnetism of swing arm 302 is identical as permanent magnet, and the repulsion of like pole makes swing arm 302 be rocked to top.The pendulum of swing arm 302
Dynamic to drive light barrier 303 mobile, light barrier 303 can block calibration light or measurement light, so that only Ray Of Light is by being divided
Module 200 projects.
The light that spectral module 200 projects is radiated on diffusing structure 400, and diffusing structure 400 is equipped with diaphragm, first
Diaphragm and the second diaphragm, injection dissipates after the light that spectral module 200 projects once passes through diaphragm, the first diaphragm and the second diaphragm
Penetrate structure 400.
As shown in fig. 6, the diffusing structure 400 of the present embodiment includes feeler lever 401, feeler lever 401 is the master of diffusing structure 400
Body, is tubular structure, and inside is the hole of perforation.The top of feeler lever 401 is equipped with fixed plate 402, for consolidating for diffusing structure 400
It is fixed.Fixed plate 402 is equipped with diaphragm mounting base 403, and diaphragm 407 is mounted in diaphragm mounting base 403.Diaphragm installation
Seat 403 is arranged in parallel with feeler lever 401.Diaphragm 407 can play a protective role to light source module 100, spectral module 200.Window
The lower section of piece mounting base 403 is the first diaphragm mounting base 404, and the first diaphragm 408 is mounted in the first diaphragm mounting base 404.The
The lower section of one diaphragm mounting base 404 is the second diaphragm mounting base 405, and the second diaphragm 409 is mounted on the second diaphragm mounting base 405
On.The bottom end of feeler lever 401 is to receive optical module mounting base 406.It receives optical module mounting base 406 and is equipped with light hole 410, light hole
410 and second diaphragm 409 it is opposite, the light that the second diaphragm 409 projects passes through light hole 410.First diaphragm 408 and the second diaphragm
409 play the role of eliminating veiling glare.
It receives optical module 500 to be mounted in receipts optical module installation 406, the light that diffusing structure 400 projects is by receipts optical module 500
It receives.
As shown in fig. 7, the receipts optical module 500 of the present embodiment includes microscope base 501, it is equipped at the top light well of microscope base 501
The light hole 410 of plano-convex lens 502, the light well and receipts optical module mounting base of receiving optical module 500 is opposite, so that diffusing structure
400 light projected, which are injected, receives optical module 500.
Reflecting mirror 504 is fixed with by reflecting mirror tabletting 503 on the side wall of microscope base 501.It calibrates light and passes through diffusing structure
Enter after 400 and receive optical module 500, calibrates light and enter after plano-convex lens 502 and reflecting mirror 504 and receive 500 phase of optical module
Optical fiber even.
Light is measured after diffusing structure 400, scattering light, which enters, receives optical module 500, and scattering light is saturating by plano-convex
Enter the optical fiber being connected with receipts optical module 500 after mirror 502.
Microscope base 501 is connected with pinboard 505, and pinboard 505 is used for fixed with receipts optical module mounting base 406.
Detector 600 is connected by optical fiber with optical module 500 is received, and detector 600, which determines, receives the received light of optical module 500
Energy.
When the particle monitoring instrument of the present embodiment is calibrated, measurement light is blocked by light-blocking mechanism 300, spectral module
Only calibration light projects in 200.Light is calibrated by diaphragm 407, the first diaphragm 408, the second diaphragm on diffusing structure
409, light hole 410, plano-convex lens 502, reflecting mirror 504 reach fiber end face, and luminous energy is imported detector 600 by optical fiber.It visits
It surveys device 600 and determines that the energy of the calibration light received is E1.
E1 can be gradually decreased because of the aging of device, the pollution of eyeglass.The initial value for taking E1 is E0, i.e. particle monitoring
Instrument is pollution-free, without aging when calibration light energy be E0.The clean level of optical path can be measured by transmitance:
When the contaminated degree of the optical element of particle monitoring instrument is more than certain limit value, transmitance is reduced to preset value
Staff is reminded in (as being lower than 0.7), the capable of emitting early warning of particle monitoring instrument.The particle monitoring instrument of the present embodiment has light
Pollute self-diagnostic function in road.
When particle monitoring instrument carries out the detection of sample gas, calibration light is blocked by light-blocking mechanism 300, in spectral module 200
Only measurement light projects.Measure light by diffusing structure diaphragm 407, the first diaphragm 408, after the second diaphragm 409
It is scattered with the particulate matter in sample gas.Scattering light reaches fiber end face, is imported luminous energy by optical fiber through plano-convex lens 502
Detector 600.Detector 600 determines that the energy of the scattering light received is E2.
The ratio that the energy of scattering light is E2 and the energy of calibration light is E1 is positively correlated with the concentration of particulate matter, utilizes
Standard method calibration can be obtained particle concentration value.
Because the energy intensity of calibration light has contained the influence of optical path pollution, the present embodiment particle monitoring
The resulting particle concentration of instrument eliminates the influence of optical path pollution.
Optionally, as shown in Fig. 2, particle monitoring instrument further includes shell 800, shell 800 is cavity structure, and material can be
Aluminium.Light source module 100, spectral module 200, light-blocking mechanism 300 are respectively positioned in the cavity of shell 800.The fixation of diffusing structure
Plate 402 is fixed in the cavity of shell 800 by fixed plate 801, and the other parts of diffusing structure 400 extend shell 800.
As shown in Fig. 2 and Fig. 8, particle monitoring instrument further includes ligh trap cover 700.Ligh trap cover 700 includes cover 701 and ligh trap
Module.Cover 701 and receipts optical module mounting base 406 form closed cavity, and it is within the cavity to receive optical module 500.Ligh trap module
On the inner sidewall of cover 701, unscattered light, avoids light in cover 701 in ligh trap module absorptiometry light
Intracavitary scattering, the performance of instrument is interfered.701 pairs of receipts optical modules 500 of cover and ligh trap module play a protective role.
Ligh trap module includes convex spherical part 702 and trap cylinder 703.Trap cylinder 703 is tubular, and convex spherical part 702 is located at trap cylinder 703
It is interior.The end face of convex spherical part 702 is convex spherical, and light can be reflected on trap cylinder 703 by convex spherical.Ligh trap module can fall into oblivion light
It goes out, avoids influence of the light not scattered to monitoring result.
Optionally, convex spherical part 702 and trap cylinder 703 are aluminum, carry out blackening process, are conducive to bury in oblivion light.
As shown in figure 9, particle monitoring instrument further includes flange 900.Flange 900 is fixed on the bottom of shell 800.Flange
900 include ontology 901, ontology 901 be tubular, diffusing structure 400 pass through flange 900, the outer wall of the second diaphragm mounting base 405 with
The inner wall of flange 900 matches.The fixed plate 402 of ontology 901, the second diaphragm mounting base 405 and diffusing structure forms closed
Space.
Air inlet 902 is equipped on the side wall of flange, air inlet 902 connects pure air (zero gas) by connector 903
Gas source.Pure air is passed through the cavity of flange 900, purges to the optical device in flange, avoids optical device by dirt
Dye.
The feeler lever of diffusing structure is equipped with air inlet 411, and the air inlet 411 of feeler lever is connected to the air inlet 902 of flange, clean
Net air can enter in feeler lever 401, be purged by the cavity that feeler lever 401 enters ligh trap cover 700 to optical module 500 is received.
The gas circuit of purge gass as shown in Figure 10, after being entered by air inlet 902, purge gass are to diaphragm 407, the first light all the way
Late 408, second diaphragm 409 is purged, and is flowed out by the light hole of the second diaphragm 409.Another way passes through the air inlet 411 of feeler lever
Into the cavity of ligh trap cover 700, light hole 410 is equipped with by receipts optical module mounting base 406 and is flowed out.
As shown in figure 9, the side wall of flange is equipped with observation panel 904.The position of observation panel 904 and diaphragm 407 are opposite, lead to
It crosses on 904 observable diaphragm 407 of observation panel and whether has fallen dust, and diaphragm 407 is cleaned in time.Observation panel 904
Place is equipped with dismountable sealing cover 905, and setting sealing cover 905 facilitates look at the cleaning in mouth 904.Interconnecting piece 906 is used for
With being fixedly connected for shell 800.
Optionally, detector 600 is located in the cavity of shell 800, and the optical fiber of optical module 500 and detector 600 is received in connection
Across feeler lever 401.
As shown in figure 11, the position of sample port is at A, and when measurement is passed through sample gas (tested gas) by sample port, when calibration
Clean gas is passed through by sample port.
It should be noted that each embodiment above by reference to described in attached drawing is only to illustrate the present invention rather than limits this
The range of invention, those skilled in the art should understand that, it is right under the premise without departing from the spirit and scope of the present invention
The modification or equivalent replacement that the present invention carries out, should all cover within the scope of the present invention.In addition, signified unless the context
Outside, the word occurred in the singular includes plural form, and vice versa.In addition, unless stated otherwise, then any embodiment
All or part of in combination with any other embodiment all or part of come using.
Claims (10)
1. a kind of particle monitoring instrument characterized by comprising
Light source module, the light source module generate light；
The light that the light source module projects is divided into calibration light and measurement light by spectral module；
Calibration light or measurement light are blocked in light-blocking mechanism；
Diffusing structure, the light that the spectral module projects pass sequentially through the diaphragm of the diffusing structure, the first diaphragm and the
Two diaphragms；
Optical module is received, the light that the diffusing structure projects is received；
Detector determines the received light ray energy of the receipts optical module.
2. particle monitoring instrument according to claim 1, which is characterized in that it further include shell, the shell is cavity structure,
The light source module, spectral module, light-blocking mechanism are located in the cavity of the shell, and the diffusing structure is fixed on the shell
On, the receipts optical module connects the diffusing structure.
3. particle monitoring instrument according to claim 2, which is characterized in that the diffusing structure includes feeler lever, the feeler lever
For tubulose, is set gradually by one end to the other end of the feeler lever and the diaphragm mounting base of diaphragm is installed, is equipped with first
First diaphragm mounting base of diaphragm, the second diaphragm mounting base for being equipped with the second diaphragm and receipts optical module mounting base, the receipts light
Module mounting base is equipped with light hole, and the receipts optical module connects the receipts optical module mounting base, the receipts optical module mounting base
Light hole it is opposite with the receipts light well of optical module.
4. particle monitoring instrument according to claim 3, which is characterized in that further include ligh trap cover, the ligh trap cover includes cover
Body and ligh trap module, the ligh trap module are located on the inner sidewall of the cover；The cover and the receipts optical module mounting base
Closed cavity is formed, the receipts optical module is located in the cavity；It is unscattered in the ligh trap module absorptiometry light
Light.
5. particle monitoring instrument according to claim 4, which is characterized in that the ligh trap module includes the convex ball of sloped-end
Surface parts and with internal thread trap cylinder, the convex spherical part is located in the trap cylinder.
6. particle monitoring instrument according to claim 5, which is characterized in that the convex spherical part and trap cylinder carry out at nigrescence
Reason.
7. particle monitoring instrument according to claim 4, which is characterized in that further include flange, the flange is tubular, fixed
In the bottom of the shell；
The diffusing structure passes through the flange, and the outer wall of the second diaphragm mounting base is matched with the inner wall of the flange；
The side wall of the flange is equipped with air inlet.
8. particle monitoring instrument according to claim 7, which is characterized in that the feeler lever of the diffusing structure is equipped with air inlet
Mouthful, the air inlet of the feeler lever is connected to the air inlet of the flange.
9. particle monitoring instrument according to claim 7, which is characterized in that the side wall of the flange is equipped with observation panel.
10. particle monitoring instrument according to claim 2, which is characterized in that the detector is located at the cavity of the shell
It is interior.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910556074.6A CN110220828A (en) | 2019-06-25 | 2019-06-25 | A kind of particle monitoring instrument |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910556074.6A CN110220828A (en) | 2019-06-25 | 2019-06-25 | A kind of particle monitoring instrument |
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| CN110220828A true CN110220828A (en) | 2019-09-10 |
Family
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| CN201910556074.6A Pending CN110220828A (en) | 2019-06-25 | 2019-06-25 | A kind of particle monitoring instrument |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN111307676A (en) * | 2019-11-22 | 2020-06-19 | 北京雪迪龙科技股份有限公司 | Device and method for monitoring concentration of laser front scattering particulate matter |
| CN113984606A (en) * | 2021-10-14 | 2022-01-28 | 上海北分科技股份有限公司 | Laser backscattering dust meter with background light compensation function and use method thereof |
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