CN110501312A - A kind of transmission-type smoke meter - Google Patents
A kind of transmission-type smoke meter Download PDFInfo
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- CN110501312A CN110501312A CN201910357177.XA CN201910357177A CN110501312A CN 110501312 A CN110501312 A CN 110501312A CN 201910357177 A CN201910357177 A CN 201910357177A CN 110501312 A CN110501312 A CN 110501312A
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- 239000000779 smoke Substances 0.000 title claims abstract description 26
- 230000003287 optical effect Effects 0.000 claims abstract description 55
- 235000019504 cigarettes Nutrition 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000012360 testing method Methods 0.000 claims abstract description 7
- 238000000576 coating method Methods 0.000 claims description 40
- 239000011248 coating agent Substances 0.000 claims description 37
- 239000011521 glass Substances 0.000 claims description 32
- 230000005540 biological transmission Effects 0.000 claims description 21
- 238000005192 partition Methods 0.000 claims description 11
- 239000011253 protective coating Substances 0.000 claims description 3
- 230000008021 deposition Effects 0.000 claims description 2
- 239000008199 coating composition Substances 0.000 claims 1
- 230000004907 flux Effects 0.000 abstract description 3
- 238000007796 conventional method Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 14
- 239000003546 flue gas Substances 0.000 description 14
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 13
- 238000004140 cleaning Methods 0.000 description 8
- 239000007789 gas Substances 0.000 description 8
- 238000005259 measurement Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 5
- 238000001035 drying Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
- 238000007650 screen-printing Methods 0.000 description 4
- 238000000151 deposition Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 238000012795 verification Methods 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- 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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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material 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 invention discloses a kind of transmission-type smoke meters, wherein, including box body, the reflecting mirror being equipped in box body two sides, the testing agency that is equipped in box body side is equipped with the triple valve communicated with tray interior on box body, and is equipped with the fan communicated with tray interior on box body.The present invention has the method for repeatedly passing through cigarette optical channel using optical path, make to reach identical useful luminous flux road length and be substantially reduced than space needed for conventional method, the effective solution problem that the prior art is bulky, weight is big and power consumption is big.
Description
Technical field
The present invention relates to belong to survey cigarette meter field, in particular to a kind of transmission-type smoke meter.
Background technique
Currently, smokemetor on the market is all according to " People's Republic of China (PRC) national metrological verification regulations JJG 976-
2010 " (shown in Figure 1 be one way optical path smoke intensity to the smokemetor schematic illustration design in (hereinafter referred to as " vertification regulation ")
Meter).So the transmission-type smoke meter of single-channel and former road reflective structure,
Traditional smokemetor belongs to one way transmission-type, there are bulky, additional rotation-speed measuring device, slave computer with it is upper
Need to configure long fit line between the machine of position, gross weight is more than 12 kilograms, power consumption is up to 200 watts and must use 220 volts of power supplys
The defects of.In actual highway Bian Chache, it is necessary to be used cooperatively with generator or inverter.If using inverter for a long time
Must be using the battery of automobile itself to inverter power supply, and to guarantee that the automobile of power supply cannot stop working in use.
Using very inconvenient.
Occur a kind of smokemetor now, is the standard verification design having the records of distance by the log back and forth according to the reflection of the road " vertification regulation " Zhong Yuan
, effective optical path length is shortened into 50% (showing round trip optical path smokemetor referring to fig. 2), but overall dimensions are still very
Greatly, bulky defect can not be overcome.Although former, road is reflective that channel effective length is shorten to 0.215m from 0.430m,
For handheld device overall dimensions or excessive.
Summary of the invention
Explanation of nouns:
Cigarette optical channel --- flue gas and light beam commonly through region.
In view of the above problems, the purpose of the present invention is to provide a kind of method for repeatedly passing through cigarette optical channel 8 using optical path,
It is substantially reduced space needed for reaching vertification regulation regulation useful luminous flux road length 0.430m, cooperates a variety of corrective measures, effectively
Ground solves the problems, such as that existing transmission-type smoke meter is bulky, weight is big and power consumption is big.
To achieve the above object, a kind of transmission-type smoke meter provided by the invention, wherein including box body, in box body side
The testing agency that is equipped with is equipped with the triple valve 21 communicated with tray interior on box body, and is equipped on box body and tray interior
The fan 22 communicated.
There are smoke inlet 2 and air intake 1 respectively on 21 both ends of triple valve；
The first reflecting mirror 15 and the second reflecting mirror 16 that the box body includes shell, is respectively equipped in shell two sides, and
It is equipped with the partition that inside is divided into two spaces inside the shell；
The space of the partition side is the air duct 23 communicated with fan 22, and the space of the other side is and triple valve 21
The cigarette optical channel 8 communicated；
Position between the partition two sides and the first reflecting mirror 15 and the second reflecting mirror 16 is respectively arranged with and air
The air curtain spout 4 that channel 23 communicates；Position between 8 two sides of cigarette optical channel and the first reflecting mirror 15 and the second reflecting mirror 16
It sets to be respectively arranged with and be communicated with air curtain spout 4 and cigarette optical channel 8 and the exhanst gas outlet 3 perpendicular with air curtain spout 4；Corresponding two
It is provided on the shell of side tail outlet port and exhanst gas outlet 3 and the external air curtain outlet 5 communicated；First reflecting mirror 15
Both ends are respectively arranged with light inlet window 32；
The testing agency includes the light source 10 being equipped in 32 side of the first light inlet window of the first reflecting mirror 15 and
The transmission optical receiver 18 that 32 side of the second light inlet window of one reflecting mirror 15 is equipped with；
The light that the light source 10 generates in cigarette optical channel 8 by the first reflecting mirror 15 and the second reflecting mirror 16 it
Between transmission optical receiver 18 is reached after multiple reflections.
The prominent shell 25 of the triangle communicated with triple valve 21 is provided on the partition.
Position between the light inlet window 32 and light source 10 be provided with by 10 light beam of light source be separated into 11 beam of incident light with
The spectroscope 17 of reference light 14；14 receiver of reference light for receiving reference light 14 is provided on the position that the reference light 14 irradiates
19。
The transmission optical receiver 18 and 14 receiver 19 of reference light is in the same side.It is close to each other, facilitate further
Inhibit temperature drift.
Horn mouth 7 is provided in the air curtain outlet 5.The suction to flue gas is increased, 6 power consumption of air curtain is reduced.
Standard optical filtering detent is provided on the light inlet window 32 of the outer casing bottom.
First reflecting mirror 15 and the second reflecting mirror 16 is by transparent glass 30, and transparent glass inside the shell
30 light-absorbing coatings 33 being equipped with and the reflective coating 31 being equipped on the transparent glass 30 of outer side of shell composition.In transparent glass
Reflective and light transmission position is needed not have light-absorbing coating 33 on 30.Advantage is that extinction effect is very good, the disadvantage is that in clean transparent
Light-absorbing coating 33 is easily damaged when glass 30.
Further, first reflecting mirror 15 and the second reflecting mirror 16 be by transparent glass 30, and in outer side of shell
The reflective coating 31 that transparent glass 30 is equipped with and the composition of light-absorbing coating 33 being equipped in 31 outer surface of reflective coating.Transparent
Only there is reflective coating 31 at the reflective position of needs on glass 30, the position of light transmission does not have light-absorbing coating 33.Advantage cleaning is saturating
Reflective coating 31 and light-absorbing coating 33 will not be damaged when bright glass 30.
Further, first reflecting mirror 15 and the second reflecting mirror 16 be by transparent glass 30, and in outer side of shell
Transparent glass 30 be equipped with light-absorbing coating 33.Reflective and light transmission position is needed not have light-absorbing coating on transparent glass 30
33.Again overleaf by the deposition of reflective coating 31, protective coating 34 is then coated on 31 outside of reflective coating and reserves transmittance section
Position.Finally the reflective coating 31 at light transmission position is dissolved away.Effect is identical as a upper method, and production efficiency greatly improves, only
A pull spring net more than a kind of upper method.
The light is being by the number that reflects between the first reflecting mirror 15 and the second reflecting mirror 16 in cigarette optical channel 8
It at least reflects more than three times.
The beneficial effects of the invention are as follows having the method for repeatedly passing through cigarette optical channel 8 using zigzag optical path, make to reach inspection
Space needed for set pattern journey regulation useful luminous flux road length 0.430m is substantially reduced, and solves that the prior art is bulky, weight is big
The problems such as big with power consumption.It is specific as follows: (1) present invention abandon conventional reflective light backtracking method, using word
Shape optical path repeatedly passes through the cigarette optical channel 8 for being inoculated with automobile flue gas, under the premise of not reducing cigarette 8 effective length of optical channel, significantly
Reduce 8 width dimensions of cigarette optical channel.Such as will be travelling through number and be increased to 10 times, the length that single passes through flue can reduce
It to 0.043m, is increased to 20 times, the length that single passes through flue can narrow down to 0.0215m, and this guarantees smokemetors both
Single channel transmission-type smoke meter can be met with regard to vertification regulation, moreover it is possible to solve the problems, such as handheld device to volumetric constraint.(2) national standard
In permitting deformation neutral colour filter transmittance be respectively 71%, 50%, 34% and backtracking formula 84%, 71%,
58%, and define the absorptance Ns of coefficient of light absorption K, standard effective optical path length Ls and standard effective optical path length
Algorithm, that is to say, that as long as regardless of what size final data to meet national standard using.It can thus be appreciated that zigzag optical path is multiple
The smokemetor passed through, national standard are to mention but allow in principle, standard Neutral filter transmission ratio respectively 71% of the invention,
50%, 34%).(3) due to passing through multiple reflections, so being polluted to glass surface especially sensitive, it is necessary to often calibration.Although
It can be calibrated using by the method for sampling pipe access air, but need to extract sampling pipe from automobile exhaust pipe, to complete
Flue gas in emptying sampling pipe at least wants 10 seconds, switches align mode or measuring state by triple valve 21, it may be assumed that need to calibrate
When skip sampling pipe and directly enter air intake 1, smoke inlet 2 when needing to detect.Calibration can generally be completed in 1 second.It is maximum
Benefit be that booting can measure, without pre- hot standby instrument stabilizer, be but able to achieve high measurement accuracy.In addition the prior art
The mode of widely used heated at constant temperature reply light source 10 and light-sensitive device temperature drift, because when this mode needs very long waiting
Between could stablize, in practice it has proved that without constant temperature than with constant temperature save 90% waiting time.Since temperature drift is objective reality, just
It is not open that constant temperature will also wait at least for 3 to 5 minutes.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the prior art 1；
Fig. 2 is the structural schematic diagram of the prior art 2；
Fig. 3 is structural schematic diagram of the invention；
Fig. 4 is the structural schematic diagram at another visual angle of the present invention；
Fig. 5 is schematic diagram of internal structure of the invention；
Fig. 6 is the schematic cross-sectional view of A-A in Fig. 5；
Fig. 7 is the schematic cross-sectional view of D-D in Fig. 5；
Fig. 8 is overlooking structure diagram of the invention；
Fig. 9 is the schematic cross-sectional view of B-B in Fig. 8；
Figure 10 is the partial enlargement structural representation of A in Fig. 9；
Figure 11 is the structural schematic diagram being located on box body at incident light 11 in the present invention；
Figure 12 is the structural schematic diagram of the section view of A-A in Figure 11；
Figure 13 is the partial enlargement structural representation of B in Figure 12；
Figure 14 is the structural schematic diagram being located on box body at reference light 14 in the present invention；
Figure 15 is the structural schematic diagram of the section view of B-B in Figure 14；
Figure 16 is the partial enlargement structural representation of C in Figure 15；
Figure 17 is the structural schematic diagram for being located at triple valve 21 in the present invention on box body；
Figure 18 is the structural schematic diagram of the section view of C-C in Figure 17；
Figure 19 is the partial enlargement structural representation of D in Figure 18；
Figure 20 is the flue gas and air flow morphology horizontal profile schematic diagram inside the present invention；
Figure 21 is the flue gas and air flow morphology vertical cut-away schematic view inside the present invention；
Figure 22 is the flue gas and air flow morphology schematic diagram of inner section of the present invention.
Figure 23 is signal processing flow figure of the present invention.
1. the outlet of air intake, 2. smoke inlets, 3. exhanst gas outlets, 4. air curtain spouts, 5. air curtains, 6. air curtains, 7. loudspeaker
Mouth, 8. cigarette optical channels, 9. reflecting mirrors, 10. light sources, 11. incident lights, 12. transmitted lights, 13. round-trip light, 14. reference light 14,15.
First reflecting mirror, 16. second reflecting mirrors, 17. spectroscopes, 18. transmission optical receivers, 19. reference light, 14 receiver, 20. standards
Optical filter detent, 21. triple valves, 22. fans, 23. air ducts, 24. exhaust gases passes, 25. triangles prominent shell, 30. transparent glass
Glass, 31. reflective coatings, 32. light inlet windows, 33. light-absorbing coatings, 34. protective coatings.
Specific embodiment
Invention is described in further detail with reference to the accompanying drawing.
As shown in Fig. 2-22, a kind of transmission-type smoke meter, the testing agency being equipped with including box body, in box body side, in box
Body is equipped with the triple valve 21 communicated with tray interior, and the fan 22 communicated with tray interior is equipped on box body.Described
Triple valve has smoke inlet 2 and air intake 1 on 21 both ends respectively；The box body includes shell, sets respectively in shell two sides
The first reflecting mirror 15 and the second reflecting mirror 16 having, and it is equipped with the partition that inside is divided into two spaces inside the shell；It is described every
The space of plate side is the air duct 23 communicated with fan 22, and the space of the other side is that the cigarette light communicated with triple valve 21 leads to
Road 8；Position between the partition two sides and the first reflecting mirror 15 and the second reflecting mirror 16 is respectively arranged with and air duct
The 23 air curtain spouts 4 communicated；Position between 8 two sides of cigarette optical channel and the first reflecting mirror 15 and the second reflecting mirror 16
It is respectively arranged with the exhanst gas outlet 3 communicated with air curtain spout 4 and cigarette optical channel 8；On the shell of corresponding two sides tail outlet port
It is provided with and exhanst gas outlet 3 and the external air curtain outlet 5 communicated；It is set respectively between first reflecting mirror, 15 both ends and shell
It is equipped with light inlet window 32；The testing agency includes the light source 10 being equipped in 32 side of light inlet window of outer casing bottom and in shell
The optical receiver that 32 side of light inlet window of top/bottom part is equipped with；The light that the light source 10 generates is in cigarette optical channel 8 by the
Optical receiver is reached between one reflecting mirror 15 and the second reflecting mirror 16 after multiple reflections.It is provided on the partition and three
The prominent shell 25 of the triangle that port valve 21 communicates.Position between the light inlet window 32 and light source 10 is provided with 10 light beam of light source
Separate the spectroscope 17 of 11 beam of incident light and reference light 14；It is provided on the position that the reference light 14 irradiates and receives reference light 14
14 receiver 19 of reference light.The optical receiver and 14 receiver 19 of reference light is in the same side.In the air curtain outlet 5
It is provided with horn mouth 7.Standard optical filtering detent is provided on the light inlet window 32 of the outer casing bottom.First reflecting mirror, 15 He
Second reflecting mirror 16 is by transparent glass 30, and the light-absorbing coating 33 that is equipped with of transparent glass 30 inside the shell and in shell
The reflective coating 31 that the transparent glass 30 in outside is equipped with forms.The light passes through the first reflecting mirror 15 in cigarette optical channel 8
And second the number that reflects between reflecting mirror 16 be at least to reflect more than three times.
11 position of incident light that 32 side corresponding light source 10 of light inlet window issues, which is provided with, isolates one of light for incident light 11
The spectroscope 17 of beam；Light beam is reference light 14；The reference light for receiving light beam is provided on the position that the reference light 14 irradiates
14 receivers 19,14 receiver 19 of reference light eliminate influence of the temperature drift to measurement.
The moment that triple valve 21 is mainly used for measuring twice is calibrated, it is ensured that is all the shape of initial calibration before measurement every time
State.If not using above-mentioned triple valve 21 in measurement efficiency design of less demanding.Triple valve 21 takes up space bigger, needs
Special driving device, it is more complicated, but compared with 14 resisting temperature bleach-out process of reference light, not only resisting temperature is drifted about, moreover it is possible to right
Anti-light road pollution, can greatly prolong the instrument cleaning period, can be realized uninterrupted on-line monitoring, using effect is more preferable.
Optical receiver and 14 receiver 19 of reference light are in side.
Note: according to hydrodynamic characteristic, passage length should be calculated by upper length, such as Figure 22.Effective optical path length is
The total length that light beam passes through in flue gas is 10 times across channel to demonstrate convenient, and the distance passed through every time is 43mm, always
Total 430mm.The specific size for depending on smokemetor across number limits, and the smaller number of size is more, and installation accuracy requirement is higher,
It is more sensitive to polluting.
In order to thoroughly solve the problems, such as that temperature drift, the present invention generate a reference light 14 using spectroscope 17 and receive in reference light 14
Device 19 is connect by light source 10 with 14 receiver 19 of reference light, is adjusted 10 output intensity of light source using feed circuit later, is made
The signal strength that 14 receiver 19 of reference light receives is constant.Since 14 receiver 19 of reference light and transmission optical receiver 18 are in
Same environment, model identical parameters are close, therefore can offset 99% or more drift.Ensure to be switched on and just survey, has surveyed just quasi-, nothing
It needs to wait for.Most domestic manufacturer copes with null offset using a loophole in standard verification, using zero-point locking means,
That is: behind equipment school zero, zero point is locked automatically, numerical value is just shown when only signal intensity is larger.When being inserted into optical filter, zero point
Lock function failure, drifting problem are completely exposed.Present invention application reference technology does not have to zero-point locking, can easily realize in 30mi
In n, the N value drift of smokemetor is no more than 1.0% standard.
The purpose of triple valve 21 is to be calibrated moment before every measurement, to ensure that before measuring every time be all just
It calibrated.Optical channel is directly led into atmosphere by triple valve 21, the flue gas in optical channel can be emptied completely in 1 second,
Entire prover time requires not being in extra high design without using triple valve 21 in measurement efficiency.It will be without using triple valve 21
Sampler is far from could empty the flue gas in probe tube and calibrate after flue gas 5 to 10 seconds.
Explanation in relation to air curtain 6: the main function of air curtain 6 is exactly that barrier, protective glass are formed between flue gas and reflecting mirror
Piece is not by smoke pollution.It is exactly to generate negative pressure when flowing through exhanst gas outlet 3 there are one effect, flue gas is sucked out.In order to increase
Suction can will be retracted 0.2-1 millimeters, and connect horn mouth 7 in air curtain outlet 5 on the downside of exhanst gas outlet 3, not only can reduce air curtain 6
Resistance can also increase flue gas suction amount.The power consumption of air curtain 6 accounts for 80% of total power consumption or more, is the key that reduce energy consumption
Position.
Have about signal processing circuit be much related technical personnel's indispensability rudimentary knowledge, physical circuit is herein just not
It is described in detail, only signal processing flow (Figure 23) is illustrated:
Light source 10 is motivated with a controlled high-frequency signal source first, this light source 10 generally uses green laser head, makes light source
10 issue high-frequency pulse signal, reference light 14 and incident light 11 are isolated by spectroscope 17, by 14 receiver 19 of reference light
Be compared with detector amplefier with reference voltage (can overcome completely laser tube output power unstable using reference voltage
Problem), the amplitude of light source 10 is motivated according to error correction frequency source signal, it may be assumed that (10 system of modulated light source is to environment light for amplitude modulation amplification
Line variation is insensitive, is greatly improved accuracy of measurement.).Due to transmission optical receiver 18 and 14 receiver of reference light, 19 model
Identical parameters are very close, and installation site is again very close, and the temperature difference can be ignored, and temperature drift is very little.Whole flow process is by laser
Tube power is unstable, ambient light interference and optical receiver temperature drift these three problems are solved perfectly.
Reflecting mirror (Figure 11-19) is critical component, recommends to implement by claim 8 or 9, will not when benefit is cleaning
Reflecting mirror is damaged, although step is more, each step is all easily achieved, and is conducive to produce in enormous quantities, can be in a bulk of glass
Upper production reflection mirror array, is then cut into single reflecting mirror, and efficiency is very high.
8 detailed process of dependent claims is 1. glass for preparing a piece of cleaning.2. depositing reflective coating with silver mirror reaction
31.3. needing reflective position silk-screen printing protective film.4. solidification or drying.5. washing away no protective film with dust technology immersion
The reflective coating 31 at position.6. cleaning drying.7. the silk-screen printing light-absorbing coating 33 in addition to light inlet window 32.8. solidification or drying.
9. cutting quality inspection.
9 detailed process of dependent claims is 1. glass for preparing a piece of cleaning.2. silk-screen printing light-absorbing coating 33.3. solid
Change or dries.4. depositing reflective coating 31 with silver mirror reaction.5. cleaning drying.6. silk-screen printing protective film.7. solidification is dried
It is dry.8. impregnating the reflective coating 31 for washing away 32 position of light inlet window with dust technology, make its light transmission.9. cleaning drying.10. cutting matter
Inspection.
Interference of the light-absorbing coating 33 in addition to reducing scattering light, main application is to ensure that order of reflection is accurate, if reflection
Number is not right, will lead to light beam and shines light-absorbing coating 33, signal can not reach transmission optical receiver 18, to avoid producing
It makes mistakes in journey.
Display does not have essential distinction with control section and existing smokemetor, just repeats no more.
Above-described is only some embodiments of the present invention.For those of ordinary skill in the art, not
Under the premise of being detached from the invention design, various modifications and improvements can be made, these belong to the protection scope of invention.
Claims (10)
1. a kind of transmission-type smoke meter, which is characterized in that the testing agency that is equipped with including box body, in box body side, on box body
Equipped with the triple valve communicated with tray interior, and the fan communicated with tray interior is equipped on box body；
There are smoke inlet and air intake respectively on the triple valve both ends；
The first reflecting mirror and the second reflecting mirror that the box body includes shell, is respectively equipped in shell two sides, and inside the shell
Equipped with the partition that inside is divided into two spaces；
The space of the partition side is the air duct communicated with fan, and the space of the other side is the cigarette light communicated with triple valve
Channel；
The partition two sides are respectively arranged with the position between the first reflecting mirror and the second reflecting mirror to be communicated with air duct
Air curtain spout；Position between the cigarette optical channel two sides and the first reflecting mirror and the second reflecting mirror is respectively arranged with and wind
Curtain spout and cigarette optical channel communicate and the exhanst gas outlet perpendicular with air curtain spout；On the shell of corresponding two sides tail outlet port
It is provided with and is exported with exhanst gas outlet and the external air curtain communicated；The first reflecting mirror both ends are respectively arranged with light inlet window；
The testing agency includes the light source being equipped in the first light inlet window side of the first reflecting mirror and in the first reflecting mirror
The transmission optical receiver that second light inlet window side is equipped with；
The light that the light source generates in cigarette optical channel by multiple reflections between the first reflecting mirror and the second reflecting mirror it
Transmission optical receiver is reached afterwards.
2. a kind of transmission-type smoke meter according to claim 1, which is characterized in that be provided on the partition and threeway
The prominent shell of the triangle that valve communicates.
3. a kind of transmission-type smoke meter according to claim 1, which is characterized in that between the light inlet window and light source
Position is provided with the spectroscope that light beam of light source is separated into incident beam Yu reference light；It is arranged on the position of the reference light irradiation
There is the reference optical receiver for receiving reference light.
4. a kind of transmission-type smoke meter according to claim 3, which is characterized in that the transmission optical receiver and reference
Optical receiver is in the same side.
5. a kind of transmission-type smoke meter according to claim 1,2,3 or 4, which is characterized in that in the air curtain outlet
It is provided with horn mouth.
6. a kind of transmission-type smoke meter according to claim 1, which is characterized in that the first light inlet window of the outer casing bottom
On be provided with basic filter detent.
7. a kind of transmission-type smoke meter according to claim 1, which is characterized in that first reflecting mirror and second is instead
Mirror is penetrated by transparent glass, and the light-absorbing coating that is equipped with of transparent glass inside the shell and the transparent glass in outer side of shell
The reflective coating composition being equipped with；Reflective and light transmission position is needed to be not provided with light-absorbing coating on transparent glass.
8. a kind of transmission-type smoke meter according to claim 1, which is characterized in that first reflecting mirror and second is instead
Mirror is penetrated by transparent glass, and the reflective coating that is equipped on the transparent glass of outer side of shell and is set in reflective coating outer surface
By light-absorbing coating form；Only there is reflective coating at the reflective position of needs on transparent glass, the position of light transmission is not inhaled
Light coating.
9. a kind of transmission-type smoke meter according to claim 1, which is characterized in that first reflecting mirror and second is instead
Mirror is penetrated by transparent glass, and is equipped with light-absorbing coating on the transparent glass of outer side of shell；Needed on transparent glass it is reflective and
The position of light transmission does not have light-absorbing coating, then overleaf by reflective coating deposition, then protective coating is coated on outside reflective coating
Side simultaneously reserves light transmission position；Finally the reflective coating at light transmission position is dissolved away.
10. a kind of application method of transmission-type smoke meter according to claim 1, which is characterized in that the light is in cigarette
Passing through the number reflected between the first reflecting mirror and the second reflecting mirror in optical channel is at least to reflect more than three times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910357177.XA CN110501312A (en) | 2019-04-29 | 2019-04-29 | A kind of transmission-type smoke meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910357177.XA CN110501312A (en) | 2019-04-29 | 2019-04-29 | A kind of transmission-type smoke meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110501312A true CN110501312A (en) | 2019-11-26 |
Family
ID=68585719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201910357177.XA Pending CN110501312A (en) | 2019-04-29 | 2019-04-29 | A kind of transmission-type smoke meter |
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| CN111562204A (en) * | 2020-03-03 | 2020-08-21 | 河南省计量科学研究院 | Calibration method of light-tight smoke meter optical filter |
| CN114324164A (en) * | 2021-12-30 | 2022-04-12 | 武汉比天科技有限责任公司 | Transmission-type smokemeter calibration method |
| CN115032347A (en) * | 2021-11-26 | 2022-09-09 | 北京市北分仪器技术有限责任公司 | Plant-wood tobacco generating device |
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| CN111562204A (en) * | 2020-03-03 | 2020-08-21 | 河南省计量科学研究院 | Calibration method of light-tight smoke meter optical filter |
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