CN206740590U - Solid particulate matter concentration detection apparatus under a kind of high humidity environment - Google Patents
Solid particulate matter concentration detection apparatus under a kind of high humidity environment Download PDFInfo
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- CN206740590U CN206740590U CN201720458153.XU CN201720458153U CN206740590U CN 206740590 U CN206740590 U CN 206740590U CN 201720458153 U CN201720458153 U CN 201720458153U CN 206740590 U CN206740590 U CN 206740590U
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Abstract
The utility model provides solid particulate matter concentration detection apparatus under a kind of high humidity environment, including air flow channel system, heating system, temperature control system, measuring system, display processing system and power system；Air flow channel system includes a heating cavity, a fan and a measurement cavity are provided with heating cavity, measuring system is in measurement cavity, measuring system includes laser, extender lens and spatial filter, scattering light collection and treatment device and optical-electrical converter, heating system includes a resistance wire, temperature control system includes temperature detect switch (TDS) and temperature element, display processing system includes filter amplification circuit, microprocessor and display, and power system provides electric power for whole particle concentration detection means.The utility model excludes influence of the air humidity to measuring concentration of granules in certain result using heating, and particle concentration is measured using laser light scattering principle, improves the accuracy and accuracy of measurement result.
Description
Technical field
A kind of detection method and system and device of novel solid particle concentration are the utility model is related to, especially suitable for height
Solid particulate matter in air is accurately detected under wet environment.
Background technology
In recent years, although China carries forward vigorously Ecological Civilization Construction, in many cities, air pollution is still very tight
Heavy, PM2.5 particulate matters are the key factors for causing air pollution in air, are the arch-criminals for endangering human body health, long
Phase can dramatically increase respiratory disease, angiocardiopathy, the hair of the disease such as asthma and lung cancer deterioration in pollution environment
Sick rate, therefore concentration of solid particles is highly important in accurate detection air.In addition in some special industrial production occasions,
Such as medal polish, aluminum products manufacture can produce a large amount of industrial dust, and the dust granules that these diameters are about 2.5 microns can not only endanger
Evil worker's health, and chance naked light can explode, and seriously endanger the security of the lives and property.Therefore, in real time in monitoring air
Tiny particles content concentration becomes particularly significant, so general being applied to fine solid particle thing under complex environment there is an urgent need to a kind of
The detection means of concentration monitor.
On the one hand, due to the continuous ripe and extensive use of laser light scattering principle, currently exist and a variety of dissipated with laser
Penetrate the air particle concentration detector that principle is measuring method.On the other hand, to prevent industrial dust from exploding, production peace is ensured
Entirely, industrial dedusting is carried out with wet dedusting principle more, i.e., using the suction of centrifugal high pressure fan, dusty gas is pressed onto equipped with one
In the tank for determining height water, water-bath can be a part of dust adsorption in water.After uniform shunting, gas flows from the bottom up,
And high-pressure nozzle then sprays water smoke from top to bottom, the grit of remainder is trapped.Now in order to determine efficiency of dust collection, dedusting is identified
Finely ground particles concentration in air afterwards whether in the concentration range of safety, it is necessary to small in the air after dedusting
Grain thing concentration is further measured.But when high humidity environment carries out the detection of particulate in air concentration, due to air
Middle moisture is larger, and it is crucial that the droplet diameter in air is close with particulates thing diameter, institute
The laser that the lasing light emitter for being used to detect with the particle concentration detector inside that presently, there are is launched is on tiny particles content surface
Also aerial droplet surface reflects while scattering, the scattering light for causing the device for collecting scattering light to collect
Strong higher, there is mistake in the measurement result for ultimately resulting in solid particulate matter concentration, and therefore, needs one urgent at present are in high humidity
The interference of droplet in air can be excluded when air particle concentration is detected under environment, so as to draw accurate air particles
The detection means of thing concentration data.
Utility model content
The purpose of this utility model is to provide one kind and is applied to any environment, is particularly suitable for high humidity environment, measures
As a result the detection method and its detection means of very accurate air solid particle concentration.Devised according to this above-mentioned purpose
A kind of novel solid particle concentration detection means.The detection means using by air heat fully vaporization droplet by the way of come
The fine droplet in damp atmosphere is removed, so as to ensure accurate detection of the detecting system to actual solid particulate matter concentration.
The utility model is achieved by the following technical solution：
Solid particulate matter concentration detection apparatus under a kind of high humidity environment, including air flow channel system, heating system, temperature control
System, measuring system, display processing system and power system；
The air flow channel system includes a heating cavity, and a fan and a measurement are provided with the heating cavity
Cavity, the fan and measurement cavity are respectively arranged on the both ends of heating cavity；
For the measuring system in the measurement cavity, the measuring system includes laser, extender lens and space
Wave filter, scattering light collection and treatment device and optical-electrical converter；The laser passes through caused laser and extender lens and sky
Between wave filter connect, the extender lens and spatial filter pass through optical effect and connected with the scattering light collection and treatment device
Connect, the scattering light collection and treatment device is electrically connected with the optical-electrical converter；
The heating system is arranged in the heating cavity, the heating system be located at the fan and measurement cavity it
Between；The heating system includes a resistance wire；
The temperature control system includes temperature detect switch (TDS) and temperature element, the temperature detect switch (TDS) and the resistance wire and the thermometric
Element is electrically connected with, and the temperature element is on the wall of the heating cavity；
The display processing system includes filter amplification circuit, microprocessor and display, the filter amplification circuit, micro-
Processor and display are electrically connected with successively, and the filter amplification circuit is electrically connected with the optical-electrical converter；
The power system is electrically connected with the fan, temperature control system, display processing system, measuring system and heating system
System, the power system provide electric power for whole particle concentration detection means.
Further principle is as follows：
The detection means includes air flow channel system, heating system, temperature control system, measuring system, display processing system, electricity
Force system.Air flow channel system is made up of fan, heating cavity and measurement cavity, is that detection means completes sucking, being empty for air
The heating of gas and the measurement of particulate in air concentration provide necessary primary condition.Heating system is made up of resistance wire, is used for
The air that detection means is drawn into heating cavity is heated.Temperature control system is made up of temperature element, temperature detect switch (TDS), for certainly
Dynamic control heating system ensures that air is fully heated, the small water droplet in air so as to control the temperature inside heating cavity
Fully gasification.Measuring system is by laser, extender lens and spatial filter, scattering light collection and treatment device, optical-electrical converter
Composition, for completing the measurement of particle concentration, obtains the curve that scattered light intensity changes over time, and be transformed into telecommunications
Number.Display processing system is made up of filter amplification circuit, microprocessor, display, for the telecommunications for passing out measuring system
Number it is amplified and handles, draws the concentration of air particle, and the result is shown over the display.The effect of power system
It is to provide electric power for whole particle concentration detection means.
Compared with existing particle concentration detector, this new high humility solid particulate matter concentration detection apparatus is fully examined
Consider influence of the air humidity to air particle measurement of concetration process and result, the droplet in highly humid air is removed using heating
Method, eliminate air in droplet interference.It has advantages below compared with conventional particle concentration detector：
(1) detection means excludes influence of the air humidity to measuring concentration of granules in certain result using heating, utilizes laser
Scattering principle measures to the concentration of particulate matter, greatly improves the accuracy and accuracy of measurement result.
(2) detection means volume is small, easy to carry, and measurement is quick, and operating process is very convenient, and is applied to any ring
The measurement of air solid particle concentration under border, solve traditional particle concentration detector and knot is measured under high humidity environment
The inaccurate problem of fruit.
Brief description of the drawings
Fig. 1：High humility solid particulate matter concentration detection apparatus built-in system arranges block diagram；
Fig. 2：Heating cavity, measurement inside cavity structure and resistance wire distribution schematic diagram；
Fig. 3：Measuring system, display processing system fundamental diagram；
Fig. 4：Temperature control system fundamental diagram.
In figure：1st, heating cavity；2nd, cavity is measured；3rd, resistance wire；4th, laser；5th, extender lens and spatial filter；
6th, light collection and treatment device is scattered；7th, optical-electrical converter；8th, filter amplification circuit；9th, microprocessor；10th, display；11st, temperature control
Switch；12nd, temperature element
Embodiment
The utility model is further described below in conjunction with the accompanying drawings：
As shown in figures 1-4, solid particulate matter concentration detection apparatus under a kind of high humidity environment, including air flow channel system,
Heating system, temperature control system, measuring system, display processing system and power system；
The air flow channel system includes a heating cavity 1, and a fan and a survey are provided with the heating cavity 1
Cavity 2 is measured, the fan and measurement cavity 2 are respectively arranged on the both ends of heating cavity 1；
For the measuring system in the measurement cavity 2, the measuring system includes laser 4, extender lens and sky
Between wave filter 5, scattering light collection and treatment device 6 and optical-electrical converter 7；The laser 4 is by caused laser and expands
Mirror is connected with spatial filter 5, and the extender lens is handled with spatial filter 5 by optical effect and the scattering light collection
Device 6 is connected, and the scattering light collection and treatment device 6 is electrically connected with the optical-electrical converter 7；
The heating system is arranged in the heating cavity 1, and the heating system is located at the fan and measurement cavity 2
Between；The heating system includes a resistance wire 3；
The temperature control system includes temperature detect switch (TDS) 11 and temperature element 12, and the temperature detect switch (TDS) 11 is controlled with the resistance wire 3
The opening and closing of resistance wire processed and the temperature element 12 are electrically connected with, and the temperature element 12 is located at the heating cavity 1
Wall on measure heating cavity 1 in air temperature；
The display processing system includes filter amplification circuit 8, microprocessor 9 and display 10, the filter and amplification electricity
Road 8, microprocessor 9 and display 10 are electrically connected with successively, and the filter amplification circuit 8 electrically connects with the optical-electrical converter 7
Connect；
The power system is electrically connected with the fan, temperature control system, display processing system, measuring system and heating system
System, the power system provide electric power for whole particle concentration detection means.
Main body of the present utility model includes air flow channel system, heating system, temperature control system, measuring system, display processing
System, power system.In use, air is sucked by fan by the external world, enters section with 20mm/s-30mm/s speed
Product is 80mm2, total length is 100mm heating cavity, and the resistance wire that temperature detect switch (TDS) controls power to be 500W heats to air,
Maintaining heating cavity internal temperature, air is after abundant heating process, the small liquid in air between 120-200 degrees Celsius
Drop further gasification, water vapour molecule diameter is about 0.0004um after gasification, solid particulate matter far smaller than in solid air
Diameter, so as to eliminate influence of the fine droplet in the very big air of humidity to solid particle concentration measurement, afterwards
High-temperature gas after heating enters measurement cavity, the laser that now laser is launched by heating cavity, and irradiation is hanged in atmosphere
Scattering is produced on floating particles thing, while scatters light collection and treatment device and collects scattering light in a certain special angle, obtains scattering light
The curve changed over time by force, and then the optical signal is changed into electric signal by optical-electrical converter, after filtered amplifying circuit amplification,
Microprocessor is passed to, microprocessor utilizes the algorithm of Mie theory, drawn in the equivalent grain size and unit volume of particulate matter not
Shown over the display with the particulate matter quantity of particle diameter, and then by particle concentration, so as to show that accurate solid particulate matter is dense
Degree.
In Fig. 2, heating cavity structure uses S type structures, it is therefore an objective to extends flowing time of the air in heating cavity, makes
Air can sufficiently heated.Resistance wire power inside heating cavity for 500W and uses helical structure, mesh
Be the contact area for increasing air and resistance wire, abundant hot gas.Heating cavity inner surface is coated with mercury, outer surface scribble every
Hot coating, it is therefore an objective to reduce thermal loss, make heat largely be distributed in inside heating cavity, improve the utilization rate of energy, separately
It can also prevent heating cavity hull-skin temperature is too high to cause to damage to detection means outside.
In Fig. 3, measuring system includes laser, extender lens and spatial filter, scattering light collection and treatment device, photoelectricity
Converter.Measuring system is arranged on measurement inside cavity, is easy to direct measurement high temperature air, draws accurate particle concentration.
In measurement process, laser launches laser, after extender lens and spatial filter, has obtained a collimated monochromatic ligth
Beam, the light beam, which is irradiated on the particulate matter in air, occurs scattering phenomenon, and research shows, scatter the angle of light and particle diameter into
Inverse ratio, scattered light intensity are in logarithmic decrement with the increase of angle, and scattering light obtains after scattering light collection and treatment device collection processing
Go out the curve that scattered light intensity changes over time, the calibration curve information is converted to electric signal, filtered circuit amplification by optical-electrical converter
After pass to microprocessor.Display processing system is made up of filter amplification circuit, microprocessor, display, and microprocessor receives
The electric signal of arrival measurement system, using the algorithm of Mie theory, draw in the equivalent grain size and unit volume of particulate matter not
With the particulate matter quantity of particle diameter, so as to draw accurate solid particulate matter concentration, and then particle concentration is included in display
On.
In Fig. 4, temperature control system is made up of temperature detect switch (TDS) and temperature element, directly controls the heated condition of resistance wire.Thermometric
Element is used to measure the temperature inside heating cavity, when the temperature measured is below 120 degrees Celsius, temperature detect switch (TDS) control electricity
Resistance silk is begun to warm up.Resistance wire is controlled to stop heating when temperature is more than 200 degrees Celsius.Control heating cavity internal temperature exists
120 degrees Celsius of object above are air is fully heated, and fine droplet is fully gasified in air.Control heating cavity
Internal temperature purpose below 200 degrees Celsius is to prevent heating cavity temperature is too high from causing to damage to detection means.
The power device of whole detection means is all powered by power system.
Claims (1)
1. solid particulate matter concentration detection apparatus under a kind of high humidity environment, it is characterised in that including air flow channel system, heating
System, temperature control system, measuring system, display processing system and power system；
The air flow channel system includes a heating cavity (1), and a fan and a survey are provided with the heating cavity (1)
Cavity (2) is measured, the fan and measurement cavity (2) are respectively arranged on the both ends of heating cavity (1)；
The measuring system is located in the measurement cavity (2), and the measuring system includes laser (4), extender lens and sky
Between wave filter (5), scattering light collection and treatment device (6) and optical-electrical converter (7)；The laser (4) passes through caused laser
It is connected with extender lens with spatial filter (5), the extender lens is dissipated with spatial filter (5) by optical effect with described
Light collection and treatment device (6) connection is penetrated, the scattering light collection and treatment device (6) is electrically connected with the optical-electrical converter (7)；
The heating system is arranged in the heating cavity (1), and the heating system is located at the fan and measurement cavity (2)
Between；The heating system includes a resistance wire (3)；
The temperature control system includes temperature detect switch (TDS) (11) and temperature element (12), the temperature detect switch (TDS) (11) and the resistance wire
(3) it is electrically connected with the temperature element (12), the temperature element (12) is on the wall of the heating cavity (1)；
The display processing system includes filter amplification circuit (8), microprocessor (9) and display (10), the filter and amplification
Circuit (8), microprocessor (9) and display (10) are electrically connected with successively, the filter amplification circuit (8) and the opto-electronic conversion
Device (7) is electrically connected with；
The power system is electrically connected with fan, temperature control system, display processing system, measuring system and the heating system, institute
State power system and provide electric power for whole particle concentration detection means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720458153.XU CN206740590U (en) | 2017-04-28 | 2017-04-28 | Solid particulate matter concentration detection apparatus under a kind of high humidity environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720458153.XU CN206740590U (en) | 2017-04-28 | 2017-04-28 | Solid particulate matter concentration detection apparatus under a kind of high humidity environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206740590U true CN206740590U (en) | 2017-12-12 |
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ID=60562808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720458153.XU Expired - Fee Related CN206740590U (en) | 2017-04-28 | 2017-04-28 | Solid particulate matter concentration detection apparatus under a kind of high humidity environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206740590U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107036946A (en) * | 2017-04-28 | 2017-08-11 | 江苏大学 | Solid particulate matter concentration detection apparatus under a kind of high humidity environment |
| CN109580442A (en) * | 2019-01-10 | 2019-04-05 | 中煤科工集团重庆研究院有限公司 | Maintenance-free laser dust concentration sensor |
-
2017
- 2017-04-28 CN CN201720458153.XU patent/CN206740590U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107036946A (en) * | 2017-04-28 | 2017-08-11 | 江苏大学 | Solid particulate matter concentration detection apparatus under a kind of high humidity environment |
| CN109580442A (en) * | 2019-01-10 | 2019-04-05 | 中煤科工集团重庆研究院有限公司 | Maintenance-free laser dust concentration sensor |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171212 Termination date: 20190428 |
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| CF01 | Termination of patent right due to non-payment of annual fee |