CN109406358A - A kind of reflect adds transmission beam method haze particle stream concentration redundant measurement device - Google Patents
A kind of reflect adds transmission beam method haze particle stream concentration redundant measurement device Download PDFInfo
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- CN109406358A CN109406358A CN201811500924.2A CN201811500924A CN109406358A CN 109406358 A CN109406358 A CN 109406358A CN 201811500924 A CN201811500924 A CN 201811500924A CN 109406358 A CN109406358 A CN 109406358A
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/55—Specular reflectivity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/59—Transmissivity
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- 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
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Abstract
本发明属于雾霾在线测量领域，具体涉及一种反射加透射法雾霾颗粒流浓度冗余测量装置。一种反射加透射法雾霾颗粒流浓度冗余测量装置，其特征是，该装置的发光光路与测量气室雾霾颗粒的反射光光路逆向，测量气室内颗粒的运动路径与发光光路逆向；该装置的主体是圆筒体，辅助部分是智能管理电路。本发明的有益之处是，装置结构简单，可以整体可以加热；部件少，安装拆解方便，适合定期快速保养；透射光强，可用作光源光强监测，透射光强还可用作监视电压，冗余修正测量结果；两次冗余测量，反射或透射光强转换为微电压信号，微电压信号的强弱与雾霾颗粒流的浓度成正比，MCU计算冗余修正后，输出雾霾颗粒流的浓度，数值准确。
The invention belongs to the field of haze online measurement, in particular to a reflection-plus-transmission method haze particle flow concentration redundancy measurement device. A reflection-plus-transmission method haze particle flow concentration redundancy measurement device, characterized in that the light-emitting optical path of the device is in the opposite direction to the reflected light optical path for measuring the haze particles in the air chamber, and the movement path of the particles in the air chamber for measuring the light-emitting optical path is in the opposite direction; The main body of the device is a cylindrical body, and the auxiliary part is an intelligent management circuit. The advantages of the present invention are that the device has a simple structure and can be heated as a whole; it has few parts, is easy to install and disassemble, and is suitable for regular and quick maintenance; the transmitted light intensity can be used for monitoring the light intensity of the light source, and the transmitted light intensity can also be used for monitoring Voltage, redundantly correct the measurement results; two redundant measurements, the reflected or transmitted light intensity is converted into a micro-voltage signal, the strength of the micro-voltage signal is proportional to the concentration of the haze particle flow, after the MCU calculates the redundancy correction, the output fog The concentration of haze particle flow, the value is accurate.
Description
Technical field
The invention belongs to haze on-line measurement fields, and in particular to a kind of reflect adds transmission beam method haze particle stream concentration redundancy
Measuring device.
Background technique
Haze is the general statement exceeded to suspended particulate substance contents various in atmosphere.What is floated with the wind in atmosphere is a large amount of
The set of suspended particulate is referred to as particle stream.The particle size of individual particle from 1 micron (pm) to 10 microns, to tens microns not
Deng.In particle stream, partial size is equal or close to 2.5 microns of particle, abbreviation pm2.5.Pm2.5 particle harm to the human body is maximum,
After pm2.5 particle stream concentration reaches certain numerical value, weather forecast is defined as serious polluting weather.Particle stream concentration method is measured,
According to light scattering principle: in the communication process of light, when light is irradiated to particle stream particle, if the partial size of particle be greater than into
Many times of optical wavelength are penetrated, then generates reverse reflected light, while transmitted light obviously weakens；If the partial size of particle is less than incident light
Wavelength then generates omnidirectional scattering light, and scattered light intensity can be measured in omnidirection, and transmitted light weakens without obvious.Tool
Body application technology analysis, it is seen that the wavelength of light wave is 400--660nm, and 1pm=1000nm, partial size pm2.5 are 2500nm.Thus may be used
To see, the partial size of these particles is much larger than the wavelength of visible light wave, when light is irradiated to particle, apparent retrodirective reflection light is presented,
Or transmitted light weakens；Moreover, with particle stream concentration it is bigger, the intensity of reflected light is then bigger, and transmitted light is then weaker, the two it
Between, linearly related connection is presented.Therefore, with the method for surveying particle intensity of reflected light or transmitted intensity, haze can be measured
Grain concentration.Method with light scattering method measurement haze granule density is scientific correctly selection.Specific particle stream measurement of concetration skill
Art scheme: the main body of particle stream apparatus for measuring concentration is the cylinder that both ends add shading seal cap, and cylinder interior side is to survey
Gas chamber is measured, the other side is optical module room；Outside cylinder, one end of cylinder is cone shape indent shading seal cap, separately
One end is bottle cap shape shading seal cap, and outside cylinder, suction nozzle is on the cylinder of bottle cap shape shading seal cap side, outlet
Mouth is the centre of cylinder, outlet nozzle are 10-20 centimetres at a distance from suction nozzle, outlet nozzle and suction nozzle are along cylinder body axis
Symmetrically.Cylinder interior section between suction nozzle and outlet nozzle is measurement gas chamber；Haze two-phase particle stream from suction nozzle into
Enter, by measuring gas chamber, is discharged from outlet nozzle；Measurement gas chamber middle line section on, particle stream along cylinder axis by the right side
It moves downward, it is reverse with the luminous optical path of optical module room；In the optical module room of the cylinder other side, the light that shines is set
Road；The light source for the optical path that shines selects integrated LED light source；Integrated LED light source includes ampuliform heat-dissipating cylinder, LED light tube
And diverging lens, LED light tube and diverging lens are mounted in ampuliform heat-dissipating cylinder, the optical axis of LED light tube and diverging lens with
The axis of ampuliform heat-dissipating cylinder is coaxial, and in the focus of diverging lens, LED light tube shines by after diverging lens LED light tube,
At the point diverging annular light along 15 degree of axis；Integrated LED light source is mounted on inside cylinder star-shaped support in outer ring
Ring heart；It is an annulus outside star-shaped support in outer ring, annulus is interior, and there are three the support arm for being spaced 120 degree, three support arm phases
It hands in ring heart, constitutes star structure；It is the arc light transmission space close to 110 degree between three support arms；Star-shaped support in outer ring
Outer circle ring diameter be less than cylinder internal diameter；In outer ring inside star-shaped support insertion cylinder, fixed by front and back cylinder pinching；
The position for adjusting integrated LED light source allows diverging annular light to illuminate measurement gas chamber middle line section, gas chamber middle line section
Particle stream generates reflected light；Optical path 1 (reflected light path): the reflected light of whole particle streams inversely penetrates on gas chamber middle line section
The arcuate gap at three of star-shaped support 110 degree of intervals in outer ring on the convergent lens for impinging upon cylinder port, focuses on convergence
At 4/3 focal length of lens other side image space, that is, the photoelectricity for focusing on the inside center installation of cone shape indent shading seal cap connects
On managed 1, optical path 1 is constituted；Photoelectricity adopter 1 receives measurement intensity of reflected light, becomes intensity of reflected light as weak voltage letter
Number, the voltage signal is related to particle stream concentration, is proportional to；Optical path 2(transmitted light path): the point hair of LED light tube
Astigmatism passes through measurement gas chamber, and with particle stream collisional quenching, the transmitted light after decaying impinges upon photoelectricity adopter 2, this is optical path
2；Since the light source of optical path 2 is not stringent source of parallel light, photoelectricity adopter 2 receives measurement transmitted intensity, is unsatisfactory for
Stringent bright rich law, measurement result, which is used as, to be referred to；Transmitted intensity be weak voltage signals 2, the signal also with particle
It is related to flow concentration, inverse relation is presented；There are also other purposes for optical path 2, such as shine measurement, zero correction.It measures in gas chamber
Portion accumulates to reduce haze particle in surface optical device, near suction nozzle, airflow-resistive plate is arranged, prevents air inlet blow-through
Photoelectric receiving tube 2；In outlet nozzle far from air inlet mouth position, air flow guiding plate is set, prevents particle from accumulating on LED light source surface.
Intelligent management circuit, two paths of signals input MCU minimum system by analog-to-digital conversion by fixed ratio enlargement；Measurement: MCU
Minimum system handles digital voltage signal, based on reflected light measurement, supplemented by transmission light measurements, redundancy by setting revision program
Two optical path measurement results of reflection and transmission, show granule density, or concentration signal is sent to host computer through serial ports.It retrieves related
Light scattering method measures the Patent data of haze granule density, measures and records without 180 degree retrodirective reflection method haze.
Summary of the invention
Technical solution of the present invention: a kind of reflect adds transmission beam method haze particle stream concentration redundant measurement device, characterized in that
The luminous optical path of the device and measure gas chamber haze particle reflected light optical path it is reverse, measure gas chamber endoparticle motion path with
The optical path that shines is reverse；The main body of the device is cylinder, and slave part is intelligent management circuit；Cylinder interior side is measurement
Gas chamber, the other side are optical module room, the connection of two Room spaces, the luminous optical path of optical module chamber interior setting, measurement gas chamber middle line
It is reflected light path to optical module room, the optical path that shines is transmitted light path through measurement gas chamber；Outside cylinder, cylinder both ends
Shading seal cap one is cone shape indent shading seal cap, the other is bottle cap shape shading seal cap；Shading seal cap with
For cylinder attachment structure similar to the connection of beer bottle cover and beer bottle, beer bottle only has the Pagoda-shaped nozzle of a ring evagination, hides
There is the Pagoda-shaped bayonet of 1 centimetre of two ring of depth indent matched with cylinder port inside light seal cap, is connected to cylinder
Both ends, it is corresponding, in the port of 1 centimeter length of cylinder both ends, the Pagoda-shaped nozzle of two ring evaginations is set；Suction nozzle and outlet nozzle edge
The axisymmetrical of cylinder, suction nozzle in one end of bottle cap shape shading seal cap, outlet nozzle cylinder middle-end, suction nozzle with
It is measurement gas chamber inside cylinder between outlet nozzle, measurement air chamber length is 10-20 centimetres；The cylinder, works as cylinder
Body both ends are clamped shading seal cap, close suction nozzle outlet nozzle, keep air-tightness and shading environment inside cylinder；Bottle cap shape hides
The inner surface of light seal cap is black matrix, at the center of bottle cap shape shading seal cap inner surface, installs photoelectric receiving tube 2, works as bottle cap
Shape shading seal cap is connected on cylinder, and the optical axis of photoelectric receiving tube 2 and the axis of cylinder are coaxial；In bottle cap shape shading
Inside seal cap, close to suction nozzle side, one 2 times of setting are higher than 2 times of photoelectric receiving tube height, width photoelectric receiving tubes
The plate airflow-resistive plate of diameter；In cylinder outlet nozzle, deviate from bottle cap shape shading seal cap port, i.e., close to optical module
The inside convex edge that a width is equal to outlet nozzle diameter equal to outlet nozzle diameter, highly, referred to as air flow guiding is arranged in room position
Plate；The other end of cylinder is cone shape indent shading seal cap, and convergent lens, convergent lens first is arranged in cylinder port
Diameter be equal to cylinder diameter, then with cone shape indent shading seal cap be clamped, fixation convergent lens, sealed cylindrical
Body；At cone shape indent shading seal cap indent center, photoelectric receiving tube 1, the axis and cylinder of photoelectric receiving tube 1 are installed
Axis coaxle；It is optical module room from air flow guiding plate to convergent lens inside cylinder, outside two Room degasification conductance flowing plates,
Space connection.
A kind of reflection adds transmission beam method haze particle stream concentration redundant measurement device, characterized in that optical module room
Interior luminous optical path, including star-shaped support, rear positioning cylinder and integrated LED light source in prelocalization cylinder, outer ring；Described is outer
The outside of star-shaped support is 0.2 centimetre of annulus of a thickness in ring, is the support arm at three 120 degree of intervals inside annulus, constitutes
Star structure, the outer diameter of the intersection point of three star strut arms outer ring of star-shaped support and front and back positioning cylinder in ring heart, outer ring
Meet insertion clearance fit between the internal diameter of cylinder, the front end of prelocalization cylinder is against the intracorporal air flow guiding plate of cylinder
On, it is star-shaped support in outer ring after prelocalization cylinder, positions cylinder after being after star-shaped support in outer ring, rear positioning cylinder
Tail end is concordant with the left end nozzle of air-tightness shading cylinder, is convergent lens, the clamping of cone shape indent shading seal cap after
The left end of cylinder, star-shaped support is squeezed by front and back positioning cylinder gripper and is fixed in outer ring；The inside of star-shaped support is three in outer ring
Adjacent 120 degree of support arm is close to 110 degree of arc spaces between three support arms, and three support arms intersect in ring heart, outside
The integrated LED light source of the ring heart installation of star-shaped support in ring, including bottle body heat-dissipating cylinder, LED light tube and diverging lens, bottle body
Heat-dissipating cylinder is fixed on the ring heart of star-shaped support in outer ring, and LED light tube and diverging lens are mounted in bottle body heat-dissipating cylinder, LED hair
The axis of light pipe, diverging lens and bottle body heat-dissipating cylinder and the axis coaxle of air-tightness shading cylinder, it is saturating that LED light tube is located at diffusion
In the focus of mirror, LED light tube shines by limiting beam by bottle body heat-dissipating cylinder, becoming along 30 degree of axis after diverging lens
Point divergent rays, illuminate the gross section in measurement gas chamber middle line section, this is the optical path that shines；Optical path 1 is reflected light path,
The distance for measuring gas chamber middle line to cylinder left end convergent lens is 4 times of convergent lens focal lengths, and photoelectric receiving tube 1 is in convergent lens
At 4/3 focal length of the other side, the reflected light of whole particle streams in gas chamber middle line section, reflected light light intensity and particle stream concentration are measured
It is directly proportional, transmitted along cylinder body axis, across the inside support arm of star-shaped support in outer ring three close to 110 degree arcs skies
Between, it reaches on convergent lens, focuses on photoelectric receiving tube 1, constitute optical path 1；Optical path 2 is transmitted light path, LED
The point divergent rays of luminous tube pass through measurement gas chamber, and the particle stream by measuring gas chamber decays, and transmitted light light intensity impinges upon bottle cap shape
On the photoelectric receiving tube 2 at the center of shading seal cap.
A kind of reflection adds transmission beam method haze particle stream concentration redundant measurement device, characterized in that intelligent management electricity
Road includes photoelectric receiving tube 1, photoelectric receiving tube 2, linear voltage amplifier, analog to digital conversion circuit, MCU minimum system, light source tube
Reason module, display circuit and RS232 serial ports transmission module, photoelectric receiving tube 1 and photoelectric receiving tube 2 are electrically connected linear voltage amplification
Device, linear voltage amplifier be electrically connected MCU minimum system, MCU minimum system be electrically connected light source management module, display circuit and
RS232 serial ports transmission module.
Work summary of the invention: measurement gas chamber, optical module room, shine optical path, optical path 1, optical path 2 and intelligence
It can processing circuit.Gas chamber is measured, haze gas enters gas chamber from suction nozzle, and 10 centimetres of air chamber length, 0.1 atmospheric pressure of pressure flows
1 liter/min of speed is discharged from exhaust outlet.On measurement gas chamber middle line, the particle of particle two phase flow is along cylinder body axis, by dextrad
Left movement, it is reverse with luminous optical path.The integrated light source for the optical path that shines, bottle body heat-dissipating cylinder are fixed in outer ring in star-shaped support
The heart, bottle body heat-dissipating cylinder be it is opaque, bottle body heat-dissipating cylinder limits the light beam of LED light tube, and the luminous of LED light tube pass through diffusion
After lens, become the point divergent rays along 15 degree of axis.The length of the first cylinder is adjusted, that is, adjusts the position of LED light tube, is used
Along 15 degree of axis of point divergent rays, whole particle streams in measurement gas chamber middle line section, the particle stream before and after gas chamber middle line are illuminated
Reflected light is generated, star-shaped support three arm rooms, 120 degree of arcuate gaps in outer ring is passed through, is irradiated on convergent lens；Meanwhile it transmiting
Light passes through gas chamber, onto the photoelectric receiving tube 2 at the center of bottle cap shape shading seal cap.The reflected light of optical path, particle stream is inverse
To three 120 degree of arcuate gaps through star-shaped support in outer ring, receiving on convergent lens for the cylinder other end is impinged upon, is assembled
At the other side 4/3f of lens, i.e., at the recess portion center of cone shape indent shading seal cap, photoelectricity adopter 1, circular cone are installed
It is black room between body shape indent shading seal cap and convergent lens.Photoelectricity adopter 1 receives measurement intensity of reflected light, becomes reflected light
Intensity is weak voltage signals, and voltage signal power is related to particle stream concentration；With this, transmitted light passes through gas chamber, transmitted light
Purposes has three: first, gas chamber is faithfully reacted without absorption, the voltage of photoelectricity adopter 2 when being supplied with cleaned air (standard gas)
The light intensity of LED light tube；If too low, it may be possible to divergent lens pollution or luminous tube damage；Second, with transmitted light
The voltage of electric adopter 2, for the benchmark that shines, the voltage of measurement diverging photoelectricity adopter 1 can be corrected and be surveyed caused by voltage change
Measure result；Third, transmitted light light intensity is related to concentration, reflection measurement and transmissive measurement redundancy obtain correct result.
Usefulness of the present invention is that the main body of device is cylinder, and structure is simple, can integrally heat, prevent
Water vapor accumulation in haze；Component is few, and mounting and dismounting are convenient, is suitble to periodically quickly maintenance；Transmitted light intensity can be used as light source intensity
Monitoring, when being supplied with standard gas, light intensity is not reached requirement, and illustrates that photoelectric tube receives pollution, can decompose cleaning；Transmitted light intensity also can be used
Make monitoring voltage, redundancy corrects measurement result；Redundant measurement twice, reflection or transmitted light intensity are converted to micro voltage signal, micro- electricity
It presses the power of signal directly proportional to the concentration of haze particle stream, after the amendment of MCU computing redundancy, exports the concentration of haze particle stream,
Numerical value is accurate.
Detailed description of the invention
The overall structure figure of a kind of reflection of Fig. 1 plus transmission beam method haze particle stream concentration redundant measurement device.
Star-shaped support knot in the cylinder and outer ring of a kind of reflection of Fig. 2 plus transmission beam method haze particle stream concentration redundant measurement device
Composition
The circuit diagram of a kind of reflection of Fig. 3 plus transmission beam method haze particle stream concentration redundant measurement device.
In figure: 1, cone shape indent shading seal cap, 2, photoelectric receiving tube 1,3, convergent lens, 4, cylinder, 5, after
Position cylinder, 6, star-shaped support in outer ring, 6.1 outer rings, 6.2, interior star, 6.3,120 degree arc transparent areas, 7, integrated
LED light source, 7.1, cylinder-shaped cooling fin, 7.2, LED light tube, 7.3, diverging lens, 8, prelocalization cylinder, 9, suction nozzle, 10,
Bottle cap shape shading seal cap, 11, airflow-resistive plate, 12, photoelectric receiving tube 2,13, outlet nozzle, 14, air flow guiding plate, 17, constant current
Control circuit, 18, linear amplifier, 19, analog-to-digital conversion module, 20, MCU minimum system, 21, display, 22, RS232 serial ports
Transmission module.
Specific embodiment
With the XHX-CEMS subsystem haze particle stream measurement of concetration subsystem that Shanxi Xin Huaxiang Co., Ltd produces, it is
Embodiment is described as follows: a kind of reflect adds transmission beam method haze particle stream concentration redundant measurement device, and the main body cylinder of device is adopted
With 40 centimetres of length of 50 stainless steel tube of Φ.1 centimetre of the both ends port of stainless steel tube, rolls the double Pagoda-shapeds to be formed with rolling process
Nozzle.Shading seal cap in both ends is molded using engineering plastics, is connected to double Pagoda-shaped nozzles.The effect of both ends shading seal cap:
1, sealing function；2, photoelectric receiving tube is installed at internal blackbody, center；3, fixed other assemblies, cone shape indent shading sealing
Cap fixes convergent lens, and bottle cap shape shading seal cap installs airflow-resistive plate.Stainless steel tube bottle cap shape shading seal cap one end is beaten
5 hole Φ, installation calendering Φ 5 is managed, as suction nozzle.Middle-end on suction nozzle opposite, cylinder beats 5 hole Φ, installation calendering Φ 5
Pipe, as outlet nozzle.It is measurement gas chamber inside 10 centimetres of length of cylinder between suction nozzle and outlet nozzle；When cylinder both ends
It is clamped shading seal cap, suction nozzle outlet nozzle is closed, keeps air-tightness and shading environment inside cylinder；Bottle cap shape shading sealing
The inner surface of cap is black matrix, and photoelectric receiving tube 2 is installed at the center of bottle cap shape shading seal cap, when bottle cap shape shading seal cap is clamped
On cylinder, the optical axis of photoelectric receiving tube and the axis of cylinder are coaxial；Inside bottle cap shape shading seal cap, close to air inlet
One 2 times of photoelectric receiving tube height is set at mouth, and diameter is greater than the arc-shaped airflow-resistive plate of photoelectric receiving tube, airflow-resistive
Plate can prevent haze blow-through photoelectric receiving tube 2, reduce haze absorption；Air flow guiding in cylinder at outlet nozzle
Plate, air flow guiding plate can reduce the haze absorption on diverging lens and convergent lens surface, extend maintenance period；In fact, gas
Conductance flowing plate is on one side pipe edge of the escape pipe far from suction nozzle；In air-tightness cylinder between the suction nozzle and outlet nozzle
Portion part, referred to as measurement gas chamber；The length for measuring gas chamber is 10--20 centimetres.The length for measuring gas chamber is longer, measurement sensitivity
Higher, gas chamber takes 20 centimetres here.Convergent lens under cone shape indent shading seal cap, using Φ 50,8 centimetres of focal length.
11 centimetres of cone height inside cone shape indent shading seal cap.In terms of circuit, MCU controls integrated light source luminescent and uses
Constant-current control circuit power supply, constant current is adjustable, and light intensity is adjustable, and light intensity is constant when work.Linear amplifier uses dual amplifier, respectively
Photoelectric receiving tube 1 and photoelectric receiving tube 2 are connected, then is separately connected analog-to-digital conversion module, analog-to-digital conversion module connects MCU minimum system
System transmits measurement data with RS232 serial ports transmission module and host computer with LCD display measurement result.
Usefulness of the present invention is that the entirety of device is cylinder, and structure is simple, can integrally heat, prevent haze
Middle water vapor accumulation, component is few, and mounting and dismounting are convenient, periodically can quickly maintain；Transmitted light intensity can be used as intensity monitor purposes,
When being supplied with standard gas, light intensity is not reached requirement, and illustrates that photoelectric tube receives pollution, can decompose cleaning；Transmitted light intensity also acts as prison
Depending on voltage, measurement result is corrected；Redundant measurement twice, reflection or transmitted light intensity are converted to micro voltage signal, micro voltage signal
It is strong and weak directly proportional to the concentration of haze particle stream, after the amendment of MCU computing redundancy, the concentration of haze particle stream is exported, numerical value is accurate.
Claims (3)
1. it is a kind of reflection plus transmission beam method haze particle stream concentration redundant measurement device, characterized in that the luminous optical path of the device with
The reflected light optical path for measuring gas chamber haze particle is reverse, and motion path and the luminous optical path for measuring gas chamber endoparticle are reverse；The dress
The main body set is cylinder, and slave part is intelligent management circuit；Cylinder interior side is measurement gas chamber, and the other side is optics
The optical path that shines is arranged in component room, the connection of two Room spaces, optical module chamber interior, and measurement gas chamber middle line to optical module room is reflection
Optical path, the optical path that shines are transmitted light paths through measurement gas chamber；Outside cylinder, shading seal cap one of cylinder both ends is round
Cone-shaped indent shading seal cap, the other is bottle cap shape shading seal cap；Shading seal cap is similar with cylinder attachment structure
The connection of beer bottle cover and beer bottle, beer bottle only have the Pagoda-shaped nozzle of a ring evagination, have 1 centimetre inside shading seal cap
The Pagoda-shaped bayonet of two ring of depth indent matched with cylinder port, is connected to the both ends of cylinder, corresponding, in cylinder two
The port of 1 centimeter length is held, the Pagoda-shaped nozzle of two ring evaginations is set；Suction nozzle and outlet nozzle along cylinder axisymmetrical, into
Gas nozzle is in one end of bottle cap shape shading seal cap, middle-end of the outlet nozzle in cylinder, cylinder between suction nozzle and outlet nozzle
Inside is measurement gas chamber, and measurement air chamber length is 10-20 centimetres；The cylinder, when the clamping shading sealing of cylinder both ends
Cap closes suction nozzle outlet nozzle, keeps air-tightness and shading environment inside cylinder；The inner surface of bottle cap shape shading seal cap is
Black matrix installs photoelectric receiving tube 2, when bottle cap shape shading seal cap is connected at the center of bottle cap shape shading seal cap inner surface
On cylinder, the optical axis of photoelectric receiving tube 2 and the axis of cylinder are coaxial；Inside bottle cap shape shading seal cap, close
Suction nozzle side, one 2 times of the setting plate air-flow resistances higher than 2 times of photoelectric receiving tube height, width opto-electronic receiver pipe diameters
Baffle；In cylinder outlet nozzle, deviate from bottle cap shape shading seal cap port, i.e., close to optical module room position, be arranged one
The inside convex edge that width is equal to outlet nozzle diameter, is highly equal to outlet nozzle diameter, referred to as air flow guiding plate；The other end of cylinder
It is cone shape indent shading seal cap, convergent lens first is set in cylinder port, the diameter of convergent lens is equal to cylinder
Diameter, then be clamped with cone shape indent shading seal cap, fixed convergent lens, sealed cylindrical body；In cone shape indent
Photoelectric receiving tube 1, the axis of photoelectric receiving tube 1 and the axis coaxle of cylinder are installed in shading seal cap indent center；Cylinder
Inside is optical module room from air flow guiding plate to convergent lens, outside two Room degasification conductance flowing plates, space connection.
2. a kind of reflection as described in claim 1 plus transmission beam method haze particle stream concentration redundant measurement device, characterized in that light
The indoor luminous optical path of component is learned, including star-shaped support, rear positioning cylinder and integrated LED light source in prelocalization cylinder, outer ring；
The outside of star-shaped support is 0.2 centimetre of annulus of a thickness in the outer ring, is the support at three 120 degree of intervals inside annulus
Arm, constitutes star structure, and the intersection point of three star strut arms outer ring of star-shaped support and front and back in ring heart, outer ring position cylinder
Outer diameter and cylinder internal diameter between meet insertion clearance fit, the front end of prelocalization cylinder is against the intracorporal air-flow of cylinder and leads
It is star-shaped support in outer ring after prelocalization cylinder in flowing plate, positions cylinder, rear setting circle after being after star-shaped support in outer ring
The tail end of cylinder is concordant with the left end nozzle of air-tightness shading cylinder, is convergent lens, cone shape indent shading seal cap after
It is clamped the left end of cylinder, star-shaped support is squeezed by front and back positioning cylinder gripper and fixed in outer ring；The inside of star-shaped support is in outer ring
Three adjacent 120 degree of support arms are close to 110 degree of arc spaces between three support arms, and three support arms intersect in ring heart,
The integrated LED light source of the ring heart installation of star-shaped support in outer ring, including bottle body heat-dissipating cylinder, LED light tube and diverging lens,
Bottle body heat-dissipating cylinder is fixed on the ring heart of star-shaped support in outer ring, and LED light tube and diverging lens are mounted in bottle body heat-dissipating cylinder,
The axis of LED light tube, diverging lens and bottle body heat-dissipating cylinder and the axis coaxle of air-tightness shading cylinder, LED light tube are located at
In the focus of diverging lens, LED light tube shines by limiting beam by bottle body heat-dissipating cylinder, becoming along axis after diverging lens
30 degree of point divergent rays illuminate the gross section in measurement gas chamber middle line section, this is the optical path that shines；Optical path 1 is reflection
The distance of optical path, measurement gas chamber middle line to cylinder left end convergent lens is 4 times of convergent lens focal lengths, and photoelectric receiving tube 1 is in meeting
At 4/3 focal length of the poly- lens other side, the reflected light of whole particle streams in gas chamber middle line section, reflected light light intensity and particle are measured
It is directly proportional to flow concentration, is transmitted along cylinder body axis, three close to 110 degree across the inside support arm of star-shaped support in outer ring
Arc space is reached on convergent lens, is focused on photoelectric receiving tube 1, constitutes optical path 1；Optical path 2 is transmitted light
Road, the point divergent rays of LED light tube pass through measurement gas chamber, and the particle stream by measuring gas chamber decays, and transmitted light light intensity impinges upon
On the photoelectric receiving tube 2 at the center of bottle cap shape shading seal cap.
3. a kind of reflection as described in claim 1 plus transmission beam method haze particle stream concentration redundant measurement device, characterized in that intelligence
It includes photoelectric receiving tube 1, photoelectric receiving tube 2, linear voltage amplifier, analog to digital conversion circuit, MCU minimum system that circuit, which can be managed,
System, light source management module, display circuit and RS232 serial ports transmission module, 2 electric connection line of photoelectric receiving tube 1 and photoelectric receiving tube
Property voltage amplifier, linear voltage amplifier is electrically connected MCU minimum system, and MCU minimum system is electrically connected light source management module, aobvious
Show circuit and RS232 serial ports transmission module.
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| CN201811500924.2A CN109406358A (en) | 2018-12-10 | 2018-12-10 | A kind of reflect adds transmission beam method haze particle stream concentration redundant measurement device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4420256A (en) * | 1979-06-15 | 1983-12-13 | Svenska Traforskningsinstitutet | Dust measurement |
| CN105891074A (en) * | 2016-04-12 | 2016-08-24 | 东南大学 | Dust concentration image collecting device and collecting method |
| CN107340250A (en) * | 2017-07-27 | 2017-11-10 | 山西鑫华翔科技发展有限公司 | Double light-metering light path COD on-line analysis measuring instruments |
| CN207096089U (en) * | 2017-08-25 | 2018-03-13 | 青岛众瑞智能仪器有限公司 | Device based on optical absorption and interferometry gas concentration |
| CN108680476A (en) * | 2018-06-20 | 2018-10-19 | 苏州百创达环保科技有限公司 | A kind of particle concentration detection device |
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2018
- 2018-12-10 CN CN201811500924.2A patent/CN109406358A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4420256A (en) * | 1979-06-15 | 1983-12-13 | Svenska Traforskningsinstitutet | Dust measurement |
| CN105891074A (en) * | 2016-04-12 | 2016-08-24 | 东南大学 | Dust concentration image collecting device and collecting method |
| CN107340250A (en) * | 2017-07-27 | 2017-11-10 | 山西鑫华翔科技发展有限公司 | Double light-metering light path COD on-line analysis measuring instruments |
| CN207096089U (en) * | 2017-08-25 | 2018-03-13 | 青岛众瑞智能仪器有限公司 | Device based on optical absorption and interferometry gas concentration |
| CN108680476A (en) * | 2018-06-20 | 2018-10-19 | 苏州百创达环保科技有限公司 | A kind of particle concentration detection device |
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