CN109883914A - A kind of flue dust optical detection apparatus - Google Patents
A kind of flue dust optical detection apparatus Download PDFInfo
- Publication number
- CN109883914A CN109883914A CN201910227129.9A CN201910227129A CN109883914A CN 109883914 A CN109883914 A CN 109883914A CN 201910227129 A CN201910227129 A CN 201910227129A CN 109883914 A CN109883914 A CN 109883914A
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- laser
- gas chamber
- chamber cavity
- flue dust
- lens
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Abstract
The invention discloses a kind of flue dust optical detection apparatus, comprising: gas chamber cavity, generating device of laser, lens focussing systems, measurement optical fiber and heater；The side of gas chamber cavity is successively connected to lens focussing systems and generating device of laser, and sample gas is accessed in the other side of gas chamber cavity, and measurement optical fiber is set in gas chamber cavity；Generating device of laser includes laser pedestal and laser, and the heat that laser pedestal is used to completely cut off gas chamber cavity is conducted to laser；The laser that generating device of laser issues focuses on the measured zone of measurement optical fiber through lens focussing systems, and the reflection signal of the soot dust granule in measured zone in sample gas is enabled to be measured optical fiber reception.Flue dust optical detection apparatus whole design provided by the invention is small and exquisite, rationally distributed, signal-to-noise ratio is high and maintains easily, it can be suitable for the online flue dust analysis of minimum discharge, high humility, the sample gas by the device can be effectively analyzed, realizes real-time monitoring environmental data.
Description
Technical field
The present invention relates to environmental monitoring technology fields, more specifically to a kind of flue dust optical detection apparatus.
Background technique
With the progress of society and the development of science and technology, industrialized expansion, the pollution of atmospheric environment is increasingly severe, for
The the real-time monitoring of atmosphere pollution the aobvious important, Particulate Pollution especially therein.Wherein, the main source of particulate matter is various
The flue dust of industrial discharge.Flue dust is the solid particle emitted in industrial processes.Flue dust is to the same particle of the harm of human body
The size of object is related:
(1) particulate matter greater than 5 microns can be blocked by vibrissa and respiratory mucus.
(2) particulate matter less than 0.5 micron can generally be adhered to upper respiratory tract surface, and be discharged with sputum.
(3) diameter is maximum to the harm of human body in 0.5-5 microns of particulate matter.It not only can be under pulmonary deposition, also
Blood can be directly entered and reach partes corporis humani position.
Since various harmful substances are adhered on powder dust particle surface, it once enters human body, will cause various breathing systems
System disease.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of flue dust optical detection apparatus, can be effectively to flue dust
It is analyzed, real-time monitoring surrounding air situation.
A kind of flue dust optical detection apparatus provided by the invention, comprising:
Gas chamber cavity, generating device of laser, lens focussing systems, measurement optical fiber and heater；
The side of the gas chamber cavity is successively connected to the lens focussing systems and the generating device of laser, the gas chamber
Sample gas is accessed in the other side of cavity, and the measurement optical fiber is set in the gas chamber cavity, and the heater is used for the gas
Chamber body is heated；
The generating device of laser includes laser pedestal and laser, and the laser pedestal is installed on the gas chamber cavity
Side, the laser are installed on the laser pedestal, and the heat that the laser pedestal is used to completely cut off the gas chamber cavity passes
It is directed at the laser；
The laser that the generating device of laser issues focuses on the measurement of the measurement optical fiber through the lens focussing systems
Region, so that the soot dust granule in the measured zone in sample gas, after the reflection of laser, reflection signal can be described
Optical fiber is measured to receive.
Optionally, the sample gas channel in the laser, the lens focussing systems and the gas chamber cavity is located at same
On straight line.
Optionally, the side of the gas chamber cavity is provided with the first mounting hole, also sets up on the outside of first mounting hole
There is the second mounting hole；
The lens focussing systems are removably installed in the side of the gas chamber cavity through first mounting hole；
The side of the laser pedestal is removably installed in the side of the gas chamber cavity through second mounting hole, and
One side opening of the laser pedestal is provided with the laser channeling with the open communication, the laser bottom in the laser pedestal
The other side of seat is equipped with the laser, and the laser that the laser issues is poly- into the lens by the laser channeling
Coke installation.
Optionally, the lens focussing systems include eyeglass mounting seat, the first plano-convex lens and the first pressure ring, and described
One plano-convex lens are installed in the eyeglass mounting seat through first pressure ring compression, and the eyeglass mounting seat is installed on institute
It states on the first mounting hole.
Optionally, first plano-convex lens are protected close to the eyeglass that the side of the gas chamber cavity is additionally provided with cone structure
Retaining ring, for protecting first plano-convex lens not polluted by sample gas.
Optionally, the side in the laser channeling close to the laser is additionally provided with the second plano-convex lens, and described the
Two plano-convex lens are removably installed in the laser channeling through the second pressure ring, the placement direction of second plano-convex lens with
The placement direction of first plano-convex lens is on the contrary, for switching to directional light for the laser that the laser issues.
Optionally, the other side of the gas chamber cavity is provided with third mounting hole, for accessing sample gas branch；
The other side of the gas chamber cavity is also connected with fixed plate, for the fixed sample gas branch for accessing the gas chamber cavity
Road.
Optionally, the two sides outside the eyeglass mounting seat are additionally provided with assist handle, for installing the eyeglass
Pedestal is disassembled from the gas chamber cavity.
Optionally, it is additionally provided with channel hood at the top of the laser pedestal, for blocking extraneous light.
Optionally, the air chamber is provided with incubation chamber in vitro, and the incubation chamber includes heat preservation upper cover, heat preservation lower cover and guarantor
Warm baffle, the heat preservation upper cover are set to the top of the gas chamber cavity and the lens focussing systems, and the heat preservation lower cover is set
It is placed in the bottom of the gas chamber cavity, the heat preservation baffle plate setting is in the bottom of the lens focussing systems.
As can be seen from the above technical solutions, the invention has the following advantages:
Flue dust optical detection apparatus whole design provided by the invention is small and exquisite, rationally distributed, signal-to-noise ratio is high and maintains easily,
It can be suitable for the online flue dust analysis of minimum discharge, high humility, can effectively analyze the sample gas by the device, realize real-time
Monitor environmental data.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
Fig. 1 is a kind of schematic perspective view of flue dust optical detection apparatus provided in an embodiment of the present invention；
Fig. 2 is a kind of side view of flue dust optical detection apparatus provided in an embodiment of the present invention；
Fig. 3 is a kind of top view of flue dust optical detection apparatus provided in an embodiment of the present invention；
Fig. 4 is a kind of front view of flue dust optical detection apparatus provided in an embodiment of the present invention；
Fig. 5 is a kind of cross-sectional view of flue dust optical detection apparatus provided in an embodiment of the present invention；
Fig. 6 is a kind of internal structure enlarged diagram of flue dust optical detection apparatus provided in an embodiment of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
It should be noted that it can be directly in another element when element is referred to as " being fixed on " or " being set to " another element
Go up or may be simultaneously present centering elements.When an element is known as " being connected to " another element, it be can be directly
It is connected to another element or may be simultaneously present centering elements.It should also be noted that, the embodiment of the present invention in a left side,
The positional terms such as right, upper and lower are only relative concepts or be to refer to the normal operating condition of product each other, without should
It is considered restrictive.
As shown in Figures 1 to 5, a kind of flue dust optical detection apparatus provided in an embodiment of the present invention, comprising: gas chamber cavity 1,
Generating device of laser 2, lens focussing systems 3, measurement optical fiber 4 and heater 5；
The side of the gas chamber cavity 1 is successively connected to the lens focussing systems 3 and the generating device of laser 2, described
The other side of gas chamber cavity 1 then passes through sample gas branch access sample gas, and sample gas enters gas chamber cavity from the other side of gas chamber cavity 1
In 1 sample gas channel 11, and it is discharged from the sample gas of 1 side of gas chamber cavity outlet 13.The laser warp that generating device of laser 2 issues
It crosses after lens focussing systems 3 focus and is equally injected into sample gas channel 11, and penetrate on the sample gas in sample gas channel 11.
Heater 5 is additionally provided on gas chamber cavity 1, for heating to the gas chamber cavity 1, to guarantee air chamber
Body 1 can effectively remove the moisture in sample gas within the temperature range of setting, guarantee that sample gas does not condense, be conducive to the inspection of sample gas
It surveys；Wherein, gas chamber cavity 1 can use aluminum alloy material, and oxide treatments can effectively reduce the reflection of light and guarantee gas
The temperature of chamber body 1 is constant.
The measurement optical fiber 4 be set in the gas chamber cavity 1 and be located at sample gas branch and lens focussing systems 3 it
Between, the laser that the generating device of laser 2 issues focuses on the measurement zone of the measurement optical fiber 4 through the lens focussing systems 3
Domain, so that the soot dust granule in the measured zone in sample gas, after the reflection of laser, reflection signal can be by the survey
It measures optical fiber 4 to receive, to realize the analysis to soot dust granule.
Wherein, the generating device of laser 2 specifically includes laser pedestal 21 and laser 22, and the laser pedestal 21 is installed
In outside the gas chamber cavity 1, the laser 22 is installed on the laser pedestal 21, the laser pedestal 21 can using every
(such as nonmetallic materials etc.) is made in hot material, and the heat that can effectively completely cut off the gas chamber cavity 1 is conducted to the laser
Device 22 guarantees that laser 22 works within the scope of the temperature of safety, it is ensured that the reliability of laser 22.In addition, the laser pedestal
Thermal insulation board 211 is also provided on 21, thermal insulation board 211 is set between laser pedestal 21 and air chamber body 1, can be further
Ground effectively completely cuts off the heat of gas chamber cavity 1.It is also embedded with reference measurement optical fiber 6 on laser pedestal 21, is mainly used for laser
The laser that device 22 issues carries out reference measurement, to adjust the laser of the sending of laser 22.
It is worth noting that, the sample gas in the laser 22, the lens focussing systems 3 and the gas chamber cavity 1 is logical
Road 11 is respectively positioned on same straight line, is guaranteed that optical path and gas circuit are on same straight line, can be effectively reduced the reflection of light, and base
Standard is unified, is effectively reduced detection noise.It can be refering to Fig. 5, wherein the laser 22, the lens focussing systems 3 and institute
11 coaxial design of sample gas channel in gas chamber cavity 1 is stated, sample gas is come in from the sample gas channel 11 in left side, and the laser on right side
22 laser issued then emit toward left side, and the measured zone of laser and sample gas at 1 medium position of gas chamber cavity is met, so that sample
The reflection signal of soot dust granule is measured optical fiber and receives 4 in gas；And laser continues to turn left the sample gas of side after passing through measured zone
It is shot at channel 11, has expired the sample gas with soot dust granule due to being full of in sample gas channel 1, across measured zone and penetrate
It is then gradually absorbed to the remaining laser in sample gas channel 11 by sample gas, without being reflected back measured zone, so as to avoid reflection
Interference of the light to measured zone internal reflection signal.Compared to the detection device that optical path is intersected with gas circuit, the embodiment of the present invention is provided
Flue dust optical detection using the remaining laser of sample aspiration that is continually fed into, save the light trapping for absorbing laser,
It farthest ensure that remaining laser can be absorbed completely, avoid the unreliability that light trapping absorbs remaining laser, pole
The earth ensure that the accuracy of measurement result.
Specifically, in a kind of exemplary arrangement provided in an embodiment of the present invention, the side of the gas chamber cavity 1 is provided with
First mounting hole, the lens focussing systems 3 are removably installed in the one of the gas chamber cavity 1 through first mounting hole
Side；The second mounting hole is additionally provided on the outside of first mounting hole, the side of the laser pedestal 21 is then through described second
Mounting hole is removably installed in the side of the gas chamber cavity 1；Also, a side opening of the laser pedestal 21, it is described to swash
The laser channeling 23 with the open communication is provided in light pedestal 21, the other side of the laser pedestal 21 is equipped with the laser
Device 22, the laser 22 are fixed on 21 outside of laser pedestal, the laser that the laser 22 issues through laser pressing plate 26
Enter the lens focussing systems 3 by the laser channeling 23.It is understood that the opening of laser pedestal 21 is greater than institute
Lens focussing systems 3 are stated, after lens focussing systems 3 are installed on gas chamber cavity 1, the opening of laser pedestal 21 is aligned
The lens focussing systems 3, and laser pedestal 21 is mounted on the second mounting hole of gas chamber cavity 1, so, lens are poly-
One end of coke installation 3 actually then positioned at laser pedestal 21 laser channeling 23 in, and the other end of lens focussing systems 3 then with
Sample gas channel 11 connects, and the laser that laser 22 issues is by shining directly into sample gas channel 11 after lens focussing systems 3
On sample gas.
As shown in Figure 6, wherein the lens focussing systems 3 include eyeglass mounting seat 31, the first plano-convex lens 32 and the
One pressure ring 33, first plano-convex lens 32 are installed in the eyeglass mounting seat 31 through first pressure ring 33 compression, institute
Eyeglass mounting seat 31 is stated to be installed on first mounting hole.Since lens focussing systems 3 connect with sample gas channel 11, to keep away
Exempt from the focusing effect that the first plano-convex lens 32 are polluted and influenced laser by the sample gas in sample gas channel 11, in first plano-convex
Lens 32 are additionally provided with the lens protection ring 34 of cone structure close to the side of the gas chamber cavity 1, for protecting described first
Plano-convex lens 32 are not polluted by sample gas.
In addition, the side in the laser channeling 23 close to the laser 22 is additionally provided with the second plano-convex lens 24, institute
It states the second plano-convex lens 24 to be removably installed in the laser channeling 23 through the second pressure ring 25, second plano-convex lens 24
Placement direction and first plano-convex lens 32 placement direction on the contrary, for the laser that the laser 22 issues to be switched to
Directional light.By the combination of the second plano-convex lens 24 and the first plano-convex lens 32, point light source first can be become directional light and become
At focusing light, it is ensured that the maximum extent put together light source, improve the effect of detection.On the top of the laser pedestal 21
Portion is additionally provided with channel hood 8, for blocking extraneous light, extraneous light is avoided to be injected into laser channeling 23, and
Detection is impacted.
The other side of the gas chamber cavity 1 is provided with third mounting hole 12, for accessing sample gas branch；The air chamber
The other side of body 1 is also connected with fixed plate 7, and the hole cooperated with third mounting hole 12 is provided in fixed plate 7, is set around the hole
Multiple fixation holes for the fixed sample gas branch for accessing the gas chamber cavity 1 are equipped with, sample gas branch is being linked into third installation
After hole 12, the fixed ring on the outside of sample gas bypass line then can guarantee sample by being fixed in fixed plate 7 with fixation hole cooperation
The installation reliability of gas branch.
In a kind of optional exemplary arrangement, for the ease of staff can rapidly by eyeglass mounting seat 31 from
It is disassembled in gas chamber cavity 1, the two sides outside the eyeglass mounting seat 31 are additionally provided with assist handle 311, staff
In the case where disassembling laser pedestal 21, assist handle 311 is held by two hands, by eyeglass mounting seat 31 from gas chamber
It is extracted in cavity 1.The design of assist handle 311 can facilitate staff that the progress demolition and maintenance of lens focussing systems 3 are clear
It washes, guarantees the focusing effect of lens focussing systems 3.
In addition, in order to which the temperature guaranteed in gas chamber cavity 1 can be constant outside preset temperature value, the gas chamber cavity 1
It is provided with incubation chamber, the incubation chamber includes that heat preservation upper cover 91, heat preservation lower cover 92 and heat preservation baffle 93, the heat preservation upper cover 91 are set
It is placed in the top of the gas chamber cavity 1 and the lens focussing systems 3, the heat preservation lower cover 92 is set to the gas chamber cavity 1
Bottom, the heat preservation baffle 93 is set to the bottoms of the lens focussing systems 3.
Flue dust optical detection apparatus whole design provided in an embodiment of the present invention is small and exquisite, rationally distributed, temperature-compensating is stable,
Signal-to-noise ratio is high, convenient disassembly and easy to maintain, and the online flue dust suitable for minimum discharge, high humility is analyzed, and can be suitable for super
Low emission, the online flue dust analysis of high humility, can effectively analyze the sample gas by the device, realize real-time monitoring environment number
According to.
The embodiment of the present invention is described with above attached drawing, but the invention is not limited to above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the inspiration of the present invention, without breaking away from the scope protected by the purposes and claims of the present invention, it can also make very much
Form, all of these belong to the protection of the present invention.
Claims (10)
1. a kind of flue dust optical detection apparatus characterized by comprising
Gas chamber cavity, generating device of laser, lens focussing systems, measurement optical fiber and heater；
The side of the gas chamber cavity is successively connected to the lens focussing systems and the generating device of laser, the gas chamber cavity
The other side access sample gas, the measurement optical fiber is set in the gas chamber cavity, and the heater is for the air chamber
Body is heated；
The generating device of laser includes laser pedestal and laser, and the laser pedestal is installed on the one of the gas chamber cavity
Side, the laser are installed on the laser pedestal, and the laser pedestal is used to completely cut off the heat conduction of the gas chamber cavity
To the laser；
The laser that the generating device of laser issues focuses on the measured zone of the measurement optical fiber through the lens focussing systems,
So that the soot dust granule in the measured zone in sample gas, after the reflection of laser, reflection signal can be by the measurement light
Fibre receives.
2. flue dust optical detection apparatus according to claim 1, which is characterized in that the laser, the lens focus
Sample gas channel in device and the gas chamber cavity is located along the same line.
3. flue dust optical detection apparatus according to claim 1, which is characterized in that the side of the gas chamber cavity is provided with
First mounting hole is additionally provided with the second mounting hole on the outside of first mounting hole；
The lens focussing systems are removably installed in the side of the gas chamber cavity through first mounting hole；
The side of the laser pedestal is removably installed in the side of the gas chamber cavity through second mounting hole, and described
One side opening of laser pedestal is provided with the laser channeling with the open communication in the laser pedestal, the laser pedestal
The other side is equipped with the laser, and the laser that the laser issues is filled by the laser channeling into the lens focus
It sets.
4. flue dust optical detection apparatus according to claim 3, which is characterized in that the lens focussing systems include eyeglass
Mounting seat, the first plano-convex lens and the first pressure ring, first plano-convex lens are installed on described through first pressure ring compression
In eyeglass mounting seat, the eyeglass mounting seat is installed on first mounting hole.
5. flue dust optical detection apparatus according to claim 4, which is characterized in that first plano-convex lens are close to described
The side of gas chamber cavity is additionally provided with the lens protection ring of cone structure, for protecting first plano-convex lens dirty not by sample gas
Dye.
6. flue dust optical detection apparatus according to claim 4 or 5, which is characterized in that close to institute in the laser channeling
The side for stating laser is additionally provided with the second plano-convex lens, and second plano-convex lens are removably installed in institute through the second pressure ring
It states in laser channeling, the placement direction of the placement direction of second plano-convex lens and first plano-convex lens is on the contrary, be used for
The laser that the laser issues is switched into directional light.
7. flue dust optical detection apparatus according to claim 6, which is characterized in that the other side of the gas chamber cavity is arranged
There is third mounting hole, for accessing sample gas branch；
The other side of the gas chamber cavity is also connected with fixed plate, for the fixed sample gas branch for accessing the gas chamber cavity.
8. flue dust optical detection apparatus according to claim 4, which is characterized in that two outside the eyeglass mounting seat
Side is additionally provided with assist handle, for disassembling the eyeglass mounting seat from the gas chamber cavity.
9. flue dust optical detection apparatus according to claim 1, which is characterized in that also set up at the top of the laser pedestal
There is channel hood, for blocking extraneous light.
10. flue dust optical detection apparatus according to claim 1, which is characterized in that the air chamber is provided with guarantor in vitro
Warm box, the incubation chamber include that heat preservation upper cover, heat preservation lower cover and heat preservation baffle, the heat preservation upper cover are set to the gas chamber cavity
With the top of the lens focussing systems, the heat preservation lower cover is set to the bottom of the gas chamber cavity, and the heat preservation baffle is set
It is placed in the bottom of the lens focussing systems.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910227129.9A CN109883914A (en) | 2019-03-25 | 2019-03-25 | A kind of flue dust optical detection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910227129.9A CN109883914A (en) | 2019-03-25 | 2019-03-25 | A kind of flue dust optical detection apparatus |
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| Publication Number | Publication Date |
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| CN109883914A true CN109883914A (en) | 2019-06-14 |
Family
ID=66934114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910227129.9A Pending CN109883914A (en) | 2019-03-25 | 2019-03-25 | A kind of flue dust optical detection apparatus |
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| CN (1) | CN109883914A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112557271A (en) * | 2020-12-17 | 2021-03-26 | 西安鼎研科技股份有限公司 | Particulate matter measuring instrument and working method thereof |
| CN116242795A (en) * | 2023-05-12 | 2023-06-09 | 山东益来环保科技有限公司 | Ultraviolet smoke analyzer and application method thereof |
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| CN106290089A (en) * | 2015-05-12 | 2017-01-04 | 杜晨光 | A kind of high-precision miniaturization particulate matter sensors |
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Application publication date: 20190614 |