CN108956406A - A kind of smoke intensity detection optical system and its method - Google Patents
A kind of smoke intensity detection optical system and its method Download PDFInfo
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- CN108956406A CN108956406A CN201811108839.1A CN201811108839A CN108956406A CN 108956406 A CN108956406 A CN 108956406A CN 201811108839 A CN201811108839 A CN 201811108839A CN 108956406 A CN108956406 A CN 108956406A
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- 238000001514 detection method Methods 0.000 title claims abstract description 76
- 230000003287 optical effect Effects 0.000 title claims abstract description 48
- 239000000779 smoke Substances 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title abstract description 12
- 238000001228 spectrum Methods 0.000 claims abstract description 15
- 238000005286 illumination Methods 0.000 claims abstract description 11
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 48
- 239000003546 flue gas Substances 0.000 claims description 48
- 239000003381 stabilizer Substances 0.000 claims description 10
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- 239000007789 gas Substances 0.000 description 18
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- 238000004458 analytical method Methods 0.000 description 2
- 210000000038 chest Anatomy 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 238000004847 absorption spectroscopy Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
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- 238000000926 separation method Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
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- G—PHYSICS
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- 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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- 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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
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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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- 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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
- G01N2021/0106—General arrangement of respective parts
- G01N2021/0112—Apparatus in one mechanical, optical or electronic block
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Abstract
The invention discloses a kind of smoke intensity detection optical system and its methods, belong to gas smoke intensity detection technique field.The system includes light source part, light splitting part and detection part；Light source part includes that light-emitting component, a collimating mirror, plus lens and secondary collimating mirror are set gradually along direction of illumination；Spectrum part point includes multi-disc spectroscope, and spectroscope, which is set to, is subjected to the light beam that the light-emitting component issues and penetrates secondary collimating mirror, and the light beam can be divided into multiple tracks collimated light beam by spectroscope described in multi-disc；Detection part detects the spectrum of the multiple tracks collimated light beam for receiving the multiple tracks collimated light beam.This method is to first pass through light source part to carry out optically focused, then split the light into multi beam by being divided part, and last detection part detects multi-beam to obtain result.The present invention reduces second order error caused by light splitting, reaches the luminous intensity of test side receiving, improve detection accuracy by collimating mirror, plus lens and spectroscopical combination while improving light intensity.
Description
Technical field
The invention belongs to gas smoke intensity detection technique field, more specifically to a kind of smoke intensity detection optical system and
Its method.
Background technique
With the development of world economy, environmental pollution is got worse, and the detection and improvement for air quality become focus
Problem.Using the technology of Spectral Property Analysis Atmospheric components be widely used to atmospheric trace gas detection, industrial stokehold,
The fields such as urban pollution resource exhausting control, thus develop can accurate, real-time measurement air gas concentration device have it is important
Meaning.
In order to improve absorption spectroscopy techniques to the detection sensitivity of light concentration gas, increase the length that light beam passes through gaseous sample
Degree is a kind of effective method.Obviously, merely that optical light source and detector position is separate, make light beam pass through one it is very directly long saturating
Emitting gas sample cell, can make device heaviness, collimation complexity, poor seismic behavior, and a common direct method is to increase light to lead to
The optical path length for crossing tested gas, to generate stronger absorption.Traditional long-range absorption cell design mainly has: waveguide type, product
The similar structures such as separating-ball-type, Chernin type.All in all, there are mirror surface effective area benefits in the design of such long-range absorption cell
With the low defect of rate, higher order of reflection is obtained in miniaturization structure to be difficult to realize.While air detecting device
There is also very big rooms for improvement for beam-splitting structure, it is difficult to secondary caused by after avoiding the different light splitting pieces of existing beam-splitting structure from being superimposed
Error.
Scheme in the prior art about gas componant detection is more, for example, Chinese Patent Application No. are as follows:
201110098658.7, publication date are as follows: the patent document on November 23rd, 2011 discloses a kind of motor-vehicle tail-gas monitoring system
On-line monitoring method, comprising the following steps: step A, it is the background spectrum of measuring system, ultraviolet channel reference spectrum, infrared logical
Road reference spectra；Step B, when detecting that motor vehicle shelters from the light in ultraviolet channel and infrared channel, main control unit
Start to obtain the ultraviolet signal and infrared signal crossed by the tail gas absorption that the motor vehicle is discharged, and according to the back prestored
Scape spectrum, ultraviolet channel reference spectrum, infrared channel reference spectra calculate exhaust gas component.The program passes through ultraviolet and two infrared
Content of the channel to monitor corresponding gas componant in motor-vehicle tail-gas grasps machine, it can be achieved that unattended full-automatic on-line monitoring
The true emission behaviour of tail gas, convenience administer serious pollution vehicle to motor-car immediately in the process of moving, entirely monitor system
Have the advantages that on-line calibration, real-time, monitoring efficiency be high, unattended, continuous operation.But specifically for motor vehicle
Exhaust gas component is detected, and is not related to flue gas concentration in air and is detected, and it uses ultraviolet lights and infrared light to tail gas
It is penetrated, ordinary light source cannot achieve detection.
For another example, Chinese Patent Application No. are as follows: 201310348019.0, publication date are as follows: the patent text on November 27th, 2013
It offers, discloses a kind of optical platform of transmission-type smoke meter, which includes blower, detection pipeline, gas chamber pipeline and photoelectricity inspection
Unit is surveyed, blower, the two side walls for detecting pipeline are respectively equipped with smoke air inlet and observation panel, and photodetector unit includes branch
Seat, collimation lens, plus lens and photodiode, the lateral wall for detecting pipeline are equipped with the first branch flow pipeline and second point
The air flow inlet of branch stream pipeline, the first branch flow pipeline connects fan outlet, the first branch flow pipeline and the second branch
Airflow pipeline extends to support, and air stream outlet is equipped between plus lens and observation panel, and air stream outlet is connected with second
Branch flow pipeline, the first branch flow pipeline described in the second branch flow piping connection.The program is due to close to collimation
The surface of lens and plus lens forms stable air flow swirl, can effectively reduce the engine emission flue gas containing oil gas and
Lens surface directly contacts, and the surface cleaning period can greatly prolong, and is not used to detect smoke components.
Summary of the invention
1, it to solve the problems, such as
The present invention provides a kind of smoke intensity detection optical system, existing using absorption spectrum progress flue gas its object is to solve
The problems such as mode of Concentration Testing, light intensity is not enough, mirror surface utilization rate is low, light splitting error is larger.Smoke intensity detection of the invention
Optical system is by collimating mirror, plus lens and spectroscopical reasonable combination, while improving light intensity, reduces caused by light splitting
Second order error improve detection accuracy so that reaching enhancing test side receives light signal strength.
A kind of smoke intensity detection optical system of the invention can be applied to the detection of flue gas concentration in air, and provide flue gas
The detection method of concentration can accurately and accurately carry out flue gas concentration detection.
2, technical solution
To solve the above problems, the present invention adopts the following technical scheme that.
A kind of smoke intensity detection optical system, including light source part, light splitting part and detection part；The light source part includes
Light-emitting component, a collimating mirror, plus lens and secondary collimating mirror, spectrum part point include multi-disc spectroscope；The light-emitting component,
Collimating mirror, plus lens and secondary collimating mirror are set gradually on the light-emitting component direction of illumination；The spectroscope is set
It is placed in and is subjected to the light beam that the light-emitting component issues and penetrates secondary collimating mirror, and spectroscope described in multi-disc can be by the light beam
It is divided into multiple tracks collimated light beam；The detection part detects the multiple tracks directional light for receiving the multiple tracks collimated light beam
The spectrum of beam.
As a further improvement, the light source part further include from top to bottom successively end to end light source support cylinder, in
Portion's cylinder and lower cylinder；The light-emitting component and a collimating mirror up and down direction are set to light source and support in cylinder, the convergence
Lens are set in middle cylinder, and the secondary collimating mirror is set in lower cylinder.
As a further improvement, the light source is supported to install light source seat board and a lens seat board in cylinder up and down；The hair
Optical component array is mounted on light source seat board, and direction of illumination is against a lens seat board side；Collimating mirror is mounted on one
Secondary lens seat board, each light-emitting component are directed at a collimating mirror.
As a further improvement, the light-emitting component is in honeycomb hierarchal arrangement, meet T=1+ (n-1) * 6, in which: T is
Light-emitting component quantity, n are the number of plies of light-emitting component arrangement.
As a further improvement, the light source supports the lower end of cylinder and the upper end of middle cylinder to be socketed connection；The light source
Support the inside of cylinder lower end is peripherally disposed there are multiple Elastic buckles, it is convex that the inside of the middle cylinder upper end is equipped with clamping
Ring, Elastic buckle may be stuck on clamping bulge loop；It is provided with and is stretched out outside light source support cylinder on Elastic buckle described at least one
Plectrum.
As a further improvement, mounted lens clamper in the middle cylinder；The plus lens periphery is covered in elasticity
In pressing ring, and it is supported on the support rim on the inside of the lens clamp；It is screwed in the compression of the lens clamp upper end
Rotation set clamps plus lens by squeezing the elastic pressing ring.
As a further improvement, the middle cylinder outside screw is screwed with vernier knob, on the medial surface of vernier knob
Equipped with fine tuning annular groove；Stabilizer blade on the lens clamp outer peripheral surface props up after passing through the stabilizer blade via hole opened up on the middle cylinder
Support is in the fine tuning annular groove of the vernier knob.
As a further improvement, the spectroscope is mounted in the light splitting cabinet below lower cylinder；The light splitting
The upper end of cabinet has the light well entered for light emission, the light hole that there is the light beam after spectroscope is divided to project for lower end.
As a further improvement, flue gas channel part is arranged between the light splitting part and detection part；The flue gas is logical
Road part includes the flue gas cabinet that can be passed through from the light beam of spectroscope directive detection part；In the parallel beam direction
On the flue gas cabinet opposite sides box body wall, fan is wherein installed on the box body wall of side, opens up stomata on the box body wall of the other side,
Or fan is respectively mounted on the box body wall of two sides.
A kind of smoke intensity detection method, step include: firstly, light-emitting component power on it is luminous；Then, light-emitting component is sent out
Light out forms collimated light beam by collimating mirror, directional light using on plus lens focusing illumination to secondary collimating mirror,
The collimated light beam being relatively large in diameter forms the lesser collimated light beam of diameter by secondary collimating mirror；Then, by secondary collimating mirror
Collimated light beam is divided into the identical collimated light beam of multiple tracks light intensity using spectroscope；Finally, multiple tracks collimated light beam is across to be detected
Detected portion tap is received after flue gas, and detects spectrum.
3, beneficial effect
Compared with the prior art, the invention has the benefit that
(1) smoke intensity detection optical system of the present invention passes through light-emitting component, collimating mirror, a plus lens in light source part
Convergence with secondary collimating mirror to light, and combine the spectroscope of light splitting part that light is divided into multiple tracks collimated light beam, then by test section
Divide and detected, accurate air multicomponent concentration can be obtained in real time, provide huge help for the detection and improvement of air quality；
Light source part, the present invention overcome the deficiencies of the prior art and provide the high-power same of light-emitting component, plus lens and collimating mirror composition
Axis light source, solves that single luminous tube light intensity deficiency brightness is inadequate, and the light that multiple luminous tubes issue is not in same axis and light
Strong inadequate problem.
(2) smoke intensity detection optical system of the present invention, in terms of detecting smoke intensity, the novel beam-splitting structure of use reduces existing
Second order error caused by after the different light splitting pieces superposition of beam-splitting structure, so that it is strong to have reached the optical signal that last receiving end receives
Degree is high, the small purpose of error.
(3) smoke intensity detection optical system of the present invention can be applied to the detection of flue gas concentration in air, and it is dense to provide flue gas
The detection method of degree can accurately and accurately carry out flue gas concentration detection.
Detailed description of the invention
Fig. 1 is the front sectional view of smoke intensity detection optical system of the present invention；
Fig. 2 is the left view of smoke intensity detection optical system of the present invention；
Fig. 3 is the stereochemical structure view of light source part in smoke intensity detection optical system of the present invention；
Fig. 4 is the front sectional view of light source part in smoke intensity detection optical system of the present invention；
Fig. 5 is the connection structure view of light source seat board and a lens seat board in light source part；
Fig. 6 is the front view structure view that light source supports cylinder in smoke intensity detection optical system of the present invention；
Fig. 7 is the cross-sectional view of A-A in Fig. 6；
Fig. 8 is the stereochemical structure view of the middle cylinder in smoke intensity detection optical system of the present invention；
Fig. 9 is the front sectional view of the middle cylinder in smoke intensity detection optical system of the present invention；
Figure 10 is the mounting structure view of plus lens in smoke intensity detection optical system of the present invention；
Figure 11 is the stereochemical structure view that ring set is connected in smoke intensity detection optical system of the present invention；
Figure 12 is the front sectional view of smoke intensity detection optical system of the present invention middle and lower part cylinder；
Figure 13 is stereoscopic mechanism view of the connector from upside in smoke intensity detection optical system of the present invention；
Figure 14 is stereoscopic mechanism view of the connector from downside in smoke intensity detection optical system of the present invention；
Figure 15 is the stereochemical structure view of half of spectroscope cabinet in the light splitting part of smoke intensity detection optical system of the present invention；
Figure 16 is to be divided schematic diagram in the spectroscope cabinet for be divided part；
Figure 17 is light source honeycomb arrangement form in light source part；
Figure 18 is the schematic illustration that optically focused and light splitting are indicated in smoke intensity detection optical system of the present invention；
Figure 19 is a kind of schematic diagram for being divided spectroscope arrangement light splitting in part.
Numbering in the drawing respectively indicates are as follows:
100, light source part；110, light-emitting component；111, light source seat board；112, positioning sleeve；113, positioning screw；120, one
Secondary collimating mirror；121, a lens seat board；130, plus lens；131, lens clamp；1311, thread segment；1312, it supports convex
Platform；1313, stabilizer blade；132, rotation set is compressed；1321, spinning screw hole；133, vernier knob；1331, annular groove is finely tuned；134, elasticity pressure
Circle；140, secondary collimating mirror；141, secondary lens seat board；150, light source supports cylinder；151, light source pressure ring；152, collimating mirror pressure
Ring；153, it is socketed section；154, Elastic buckle；155, clamp；156, plectrum；157, plectrum hole；158, Gai Heduan；159, protrusion；
160, middle cylinder；161, it is socketed boss；162, it is clamped bulge loop；163, notch；164, stabilizer blade via hole；165, card slot；170, under
Portion's cylinder；171, ring set is connected；172, elastic washer；173, positioning convex ring；174, fixture block；175, positioning ring groove；176, it positions
Boss；177, escape groove；178, it is embedded in annular groove；180, connector；181, location notch hole；182, light hole；183, fixture block；184,
Conducting bar；185, fixing seat；186, bolt hole；190, spiral cover；
200, it is divided part；210, it is divided cabinet；220, spectroscope support；230, light well；240, light hole；250, it leads
Slot；
300, detection part；310, photoelectric sensor；
400, flue gas channel part；410, flue gas cabinet；411, stomata；420, fan.
Specific embodiment
In the description of the present invention, it is to be understood that, term " length ", "upper", "lower", "top", "bottom", "inner",
The orientation or positional relationship of the instructions such as "outside" is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing this hair
Bright and simplified description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation
Construction and operation, therefore be not considered as limiting the invention.
In addition, term " primary ", " secondary " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " primary " as a result, the feature of " secondary " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two
It is a or more than two.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection ", " fixation " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection；It can be directly connected, two elements can also be can be indirectly connected through an intermediary
Internal connection.For the ordinary skill in the art, it can understand above-mentioned term in the present invention with concrete condition
Concrete meaning.
The present invention is further described below with attached drawing combined with specific embodiments below.
Embodiment
As shown in Figure 1 and Figure 2, the present embodiment provides a kind of smoke intensity detection optical systems, mainly using optical principle come into
The detection of row flue gas concentration, is mainly made of four parts, respectively light source part 100, light splitting part 200, flue gas channel part
400 and detection part 300.Wherein, more dispersed, the light that intensity is weaker for being mainly used for issuing light source of light source part 100
It shines into row convergence and forms more concentration, the stronger light beam of intensity, to increase light source intensity；Part 200 is divided to be used for light source portion
The light beams of 100 convergences are divided to be divided into the essentially identical light beam of multiple tracks light intensity；Flue gas channel part 400 can by flue gas, by
The flue gas multiple tracks light beam that part 200 separates that can be split passes through, so that flue gas can absorb part light；Detection part 300 is then used
In reception across the light beam of flue gas, and absorption spectrum is detected, carries out smoke intensity detection.Whole system is organic in aforementioned four part
In conjunction with the unified whole of lower formation, below to each section mechanism and connection relationship, and how to carry out smoke intensity detection and carry out more
Detailed description.
As shown in Figure 3 and Figure 4, light source part 100 include 110, collimating mirrors 120 of light-emitting component, plus lens 130,
Secondary collimating mirror 140, light source support cylinder 150, middle cylinder 160 and lower cylinder 170.Wherein, light-emitting component 110, primary standard
Straight mirror 120, plus lens 130 and secondary collimating mirror 140 are set gradually on 110 direction of illumination of light-emitting component, from attached drawing direction,
Namely up and down direction is set gradually；Light source supports cylinder 150, middle cylinder 160 and lower cylinder 170 successively head and the tail from top to bottom
It is connected, and light-emitting component 110 and 120 up and down direction of collimating mirror are set to light source and support in cylinder 150 that plus lens 130 is set
It is placed in middle cylinder 160, secondary collimating mirror 140 is set in lower cylinder 170.Light source supports cylinder 150, middle cylinder 160
Combination with lower cylinder 170 forms a more closed space, that is, the channel of light convergence inside them, avoids outer
The influence of boundary's illumination, in order to reach better sealing effect, light source supports the upper end of cylinder 150 to be also combined with spiral cover 190, and shine member
The conductive track of part 110 may pass through spiral cover 190 and be attached.
In conjunction with shown in Fig. 4 to Fig. 7, light source is supported to install light source seat board 111 and a lens seat board 121 in cylinder 150 up and down；
110 array of light-emitting component is mounted on light source seat board 111, and direction of illumination is against 121 side of lens seat board；Collimating mirror
120 are mounted on a lens seat board 121, and each light-emitting component 110 is directed at a collimating mirror 120, thus light-emitting component 110
The illumination of sending can form collimated light beam by a collimating mirror 120.Exist for light source seat board 111 and a lens seat board 121
Light source support cylinder 150 in reliable and stable mounting structure, 111 sets of light source seat board in light source pressure ring 151, a lens seat board
121 sets in collimating mirror pressure ring 152.Light source pressure ring 151 and collimating mirror pressure ring 152 are rubber, nylon elastomeric material is made, tool
It is flexible, it can uniformly be clamped from plate surrounding, and light source supports the middle part in cylinder 150 to have inwardly projecting step, light source pressure ring
151 and about 152 collimating mirror pressure ring support install on the step surface of this step, be lined with isolation ring between the two.
Meanwhile light source supports that the upper end of cylinder 150 is that lid closes section 158, has internal screw thread, the lower end of spiral cover 190 has outer spiral shell
Line, 190 lower end of spiral cover screws in light source and the lid of cylinder 150 is supported to close in section 158, and can be pressed on the upper surface of light source pressure ring 151, from
And may make 152 radial expansion of light source pressure ring 151 and collimating mirror pressure ring, it is reliable to compress light source seat board 111 and a lens seat board
121.The medial surface of light source pressure ring 151, that is, the medial surface with 111 contact surface of light source seat board and collimating mirror pressure ring 152,
Namely with the contact surface of a lens seat board 121, notch is along the circumferential direction uniformly opened up, to be conducive to light source pressure ring 151
With the radial expansion of collimating mirror pressure ring 152.In addition, parallel between light source seat board 111 and a lens seat board 121 to guarantee to compress
It is circumferentially disposed between to have multiple positioning sleeves 112 apart from constant, by compressing light source from passing through up and down respectively
The positioning screw 113 of seat board 111 and a lens seat board 121 be screwed into positioning sleeve 112 will compress light source seat board 111, it is primary thoroughly
Microscope base plate 121 and positioning sleeve 112 are reliably fixed.
Light-emitting component 110 is used as light source, can select as needed, such as can be incandescent lamp source, fluorescent light source, energy-saving lamp
Source, LED lamp source, herein preferred LED light tube.It should be strongly noted that use LED light tube as light source, this implementation
Design is optimized to the spread pattern of light-emitting component 110 in example, and as shown in the schematic diagram of Figure 17, light-emitting component 110 is in honeycomb
Shape hierarchal arrangement meets T=1+ (n-1) * 6, in which: and T is 110 quantity of light-emitting component, and n is the number of plies that light-emitting component 110 is arranged,
Namely in addition to only one LED light tube of center, the LED light tube line of centres of outer layer is respectively formed regular hexagon.Certainly, one
The spread pattern of a collimating mirror 120 on secondary lens seat board 121 is corresponding with light-emitting component 110 consistent, thus light-emitting component 110
The light of sending, through forming large range of collimated light beam, vertical directive plus lens 130 after a collimating mirror 120.
For plus lens 130 middle cylinder 160 mounting structure, in conjunction with shown in Fig. 4, Fig. 8, Fig. 9 and Figure 10, middle part
Mounted lens clamper 131 in cylinder 160, plus lens 130 are installed on this lens clamp 131.For plus lens 130
Reliable and stable fixation, 130 periphery of plus lens cover in elastic pressing ring 134, and are supported in 131 inside of lens clamp
On support rim 1312；Meanwhile the upper end of lens clamp 131 is screwed with and compresses rotation set 132, compresses the lower end surface of rotation set 132
Centre offers spinning screw hole 1321, and the threaded upper ends section 1311 of lens clamp 131 screws in the spinning screw hole for compressing rotation set 132
In 1321, and the lower end for compressing rotation set 132 can contact and squeeze elastic pressing ring 134 and clamps plus lens 130.Plus lens 130
Drawing it is downward, so that the collimated light beam vertically injected can pool a hot spot.
It is to be particularly noted that in order to enable secondary collimating mirror 140 can be located at plus lens 130 focus on,
Receiving the hot spot converged by plus lens 130,160 outside screw of the present embodiment middle cylinder is screwed with vernier knob 133,
The medial surface of vernier knob 133 is equipped with fine tuning annular groove 1331；Stabilizer blade 1313 on 131 outer peripheral surface of lens clamp passes through middle part
164 rear support of stabilizer blade via hole opened up on cylinder 160 is in the fine tuning annular groove 1331 of vernier knob 133, thus turn fine tuning rotation
Button 133 can adjust the position of plus lens 130 up and down, that is, adjust plus lens 130 at a distance from secondary collimating mirror 140,
So that can all focus when replacing different plus lens 130.Stabilizer blade via hole 164 has larger space, so as to 130 position of plus lens
Stabilizer blade 1313 is avoided when adjusting.
Light source supports the lower end of cylinder 150 and the upper end of middle cylinder 160 to be socketed connection, that is, light source is supported under cylinder 150
The socket section 153 at end is matched with 160 upper end of middle cylinder socket boss 161.For the connection reliability of this socket structure, knot
It closes shown in Fig. 4, Fig. 6, Fig. 7, Fig. 8 and Fig. 9, light source supports cylinder 150 peripherally disposed to have multiple bullets close to the inside of lower end
Property buckle 154, the inside of 160 upper end of middle cylinder is equipped with clamping bulge loop 162, and the clamp 155 of Elastic buckle 154 may be stuck in clamping
On bulge loop 162, and clamping bulge loop 162 and clamp 155 all have the cross section of rounded triangle, to be mutually clamped or to separate.
Meanwhile it being provided at least one Elastic buckle 154 and supporting to stretch out light source branch in the plectrum hole 157 opened up on cylinder 150 from light source
The plectrum 156 outside cylinder 150 is held, to can stir downwards when needing to support cylinder 150 and middle cylinder 160 to separate light source
Piece 156, Elastic buckle 154 support 150 pivot of cylinder to light source, are detached from clamp 155 and clamping bulge loop 162, can carry out
Separation.In addition, positioning for convenience, supports the inside of 150 lower end of cylinder to be equipped with protrusion 159 in light source, correspond to middle cylinder 160
Upper end on the outside of be equipped with the notch 163 that matches with protrusion 159.
For mounting structure of the secondary collimating mirror 140 in lower cylinder 170, referring to figs. 4 and 12, lower cylinder
Have in 170 and be embedded in annular groove 178, interior to install secondary lens seat board 141, secondary collimating mirror 140 is mounted on secondary lens seat board
It is fixed at 141 center.It is smaller that range is irradiated by the light beam of secondary collimating mirror 140, that is, diameter is relatively
Small, the stronger light beam of light intensity.
Reliable and stable connection for middle cylinder 160 and lower cylinder 170, they are by covering connection ring set on the outside
171 are detachably connected.In conjunction with shown in Fig. 4, Figure 11 and Figure 12, the lower end surface of middle cylinder 160 and the upper surface of lower cylinder 170
Between be lined with elastic washer 172；Circumferencial direction opens up card slot 165, lower cylinder 170 on the lower end outside face of middle cylinder 160
The outer peripheral surface of upper end opens up positioning ring groove 175；The inside for being correspondingly connected with ring set 171 is equipped on lower side can be caught in positioning ring groove 175
Positioning convex ring 173, being correspondingly connected with the inside of ring set 171 has the fixture block 174 that can be caught in card slot 165 by upper end.It is worth explanation
, card slot 165 is formed by connecting by being caught in vertical slot and clamping translot, and is caught in the lower end surface that vertical slot passes to middle cylinder 160.When
When middle cylinder 160 is connect with lower cylinder 170, the fixture block 174 of connection ring set 171, which is introduced into, is caught in vertical slot, and then turn connects
Connect ring set 171 make fixture block 174 enter clamping translot in can clamping, in the process, elastic washer 172 is compacted, thus
Middle cylinder 160 and lower cylinder 170 obtain reliable and stable connection.In addition, being additionally provided with evacuation on the inside of the upper end of lower cylinder 170
Slot 177 stretches to the elastic washer 172 of middle cylinder 160 and 170 junction of lower cylinder and avoids；Outside lower cylinder 170
The lower section of positioning ring groove 175 is equipped with positioning convex platform 176 on circumferential surface, can match with the positioning groove for the lower end inside for connecting ring set 171
It closes.
From the foregoing, it will be observed that light source part 100 passes through 110, collimating mirrors 120 of light-emitting component, plus lens 130 and secondary standard
Light is converged in the combination of straight mirror 140, forms high-power coaxial light beam, and concentrating light principles are as shown in figure 18.Light source part 100
Structure overcomes existing technical deficiency, solves that single luminous tube light intensity deficiency brightness is inadequate, and the light that multiple luminous tubes issue
Not in same axis and the inadequate problem of light intensity.
As shown in Figure 1, Figure 2, shown in Figure 15 and Figure 16, light splitting part 200 includes the light splitting cabinet positioned at 170 lower section of lower cylinder
210 and the multi-disc spectroscope that is mounted in light splitting cabinet 210, spectroscope be set to acceptable light-emitting component 110 and issue and penetrate
The light beam of secondary collimating mirror 140, and light beam can be divided into multiple tracks collimated light beam by multi-disc spectroscope.Cabinet 210 is divided by two
Half cabinet is put together, and side is correspondingly provided with spectroscope support 220 in two half chests bodies, after two and half cabinets are combined,
Spectroscope is supported between two spectroscope supports 220.Light splitting cabinet 210 also forms closed space, avoids ambient light to light
The light that source part 100 is injected has an impact, and opens up the light well entered for the light emission by secondary collimating mirror 140 on end face thereon
230, the light hole 240 that there is the light beam after spectroscope is divided to project for lower end.
The number of beams that light splitting part 200 separates is determined by demand, and it is essentially identical to be divided into 8 light intensity in the present embodiment
Light beam, specific spectroscopic modes are related with spectroscopical arrangement form in light splitting cabinet 210.One is provided in Figure 16
Kind light splitting form, is made of 14 light splitting eyeglasses, is divided into three rows from top to bottom, all light splitting eyeglasses are unilateral to be in horizontal direction
45°.Wherein, first row has 4 light splitting eyeglasses, and two light splitting eyeglasses at both ends are total reflection eyeglass, and intermediate two are semi-transparent
Semi-reflective mirror piece, and a total reflection mirror on piece is first mapped to from the light that light well 230 is injected；Second row have 2 light splitting eyeglasses, one
A total reflection eyeglass and a semi-transparent semi-reflecting eyeglass；Third row have 8 light splitting eyeglasses, 4 total reflection eyeglasses and 4 it is semi-transparent partly
Anti- eyeglass is arranged alternately.8 light holes 240 for being divided 210 bottom of cabinet are corresponding with 8 light splitting eyeglasses of third row respectively,
The 8 beam light separated are projected from 8 light holes 240.
Figure 19 gives another spectroscopical spread pattern, and 3 rows are equally also divided on the direction of vertical incidence light.Its
In, first row has 4 light splitting eyeglasses, a total reflection eyeglass and 3 semi-transparent semi-reflecting eyeglasses；Second row has 5 spectroscopes
Piece, 2 total reflection eyeglasses at both ends and 3 intermediate semi-transparent semi-reflecting eyeglasses；Third row has 2 light splitting eyeglasses, and one is all-trans
Penetrate eyeglass and a semi-transparent semi-reflecting eyeglass.Other spectroscope spread patterns equally can be with as long as can satisfy the number of divided beams
Amount and intensity requirement.Such beam-splitting structure is divided eyeglass only with a kind of Transflective, reduces plated film difficulty and has
Beam-splitting structure caused by second order error, improve optical signal precision.Light beam becomes 8 road light by spectroscope, is per light intensity all the way
/ 8th of light source emergent light are strengthened in this way per light intensity all the way, and increasing can make to receive by the light intensity of detection gas
It is more obvious to terminate the optical signal received, improves the precision of final optical signal.
In order to organically combine light source part 100 and light splitting part 200, one is formed, passes through company between both of which
Device 180 is connect to be attached.As shown in Figure 13 and Figure 14,180 main body of connector is disc-shaped structure, and end face opens up locating slot thereon
The lower end cap in hole 181, lower cylinder 170 is positioned in location notch hole 181；The center of connector 180 opens up perforative logical
Unthreaded hole 182, light hole 182 and secondary collimating mirror 140 are coaxial, and its diameter is greater than the diameter of secondary collimating mirror 140, in order to
By the light of secondary collimating mirror 140 can all by light hole 182, meanwhile, light hole 182 is coaxial with light well 230 and phase
It can all be injected in light splitting cabinet 210 Deng, light beam.Fixing seat 185, fixing seat 185 are provided on the outer peripheral surface of connector 180
Both ends be equipped with bolt hole 186, by the bolt of the bolt hole 186 being screwed into fixing seat 185 by connector 180 and light splitting case
Two and half cabinets of body 210 connect.Importantly, a pair of fixture block 183 is arranged side by side on the lower end surface of connector 180, it is a pair of
The relative inner of fixture block 183 is equipped with a pair of of conducting bar 184；And the lateral surface in two half chests body length directions of light splitting cabinet 210
On offer the guide groove 250 matched with conducting bar 184, thus in being clipped in after being closed two and half cabinets by a pair of of fixture block 183
Between, and positioned by the cooperation of conducting bar 184 and guide groove 250, and they can be fixed for fixing seat 185, structure flexible design,
It is ingenious.
As depicted in figs. 1 and 2, flue gas channel part 400 is set between light splitting part 200 and detection part 300, from figure
On see namely be divided cabinet 210 lower section.Flue gas channel part 400 includes can be by from spectroscope directive detection part 300
The flue gas cabinet 410 that light beam is passed through, 410 upper side of flue gas cabinet open up corresponding with the light splitting light hole 240 of cabinet 210
Through-hole, so that light can be injected in flue gas cabinet 410.410 inner space of flue gas cabinet is the channel of flue gas, in collimated light beam direction
410 opposite sides box body wall of flue gas cabinet on, fan 420 is wherein installed on the box body wall of side, is opened up on the box body wall of the other side
Stomata 411 so that starting fan 420 can suck flue gas to be measured in flue gas cabinet 410, and is passed through by light beam.Certainly, flue gas case
Fan 420 can also be all installed on 410 opposite sides box body wall of body, this requires the two wind direction is identical.Certainly, it might not adopt
Flue gas could be sucked in flue gas cabinet 410 with fan 420, it is existing other to make flue gas by way of flue gas cabinet 410
Can be with, for example air blower, it is passed directly into flue gas etc..
Detection part 300 detects the spectrum of the multiple tracks collimated light beam for receiving the multiple tracks collimated light beam, leads
It to be made of photoelectric sensor 310, spectrometer and display.Wherein, photoelectric sensor 310 is mounted on the bottom of flue gas cabinet 410
Portion, and it is corresponding with the light splitting light hole 240 of cabinet 210, so that the light beam for passing through flue gas cabinet 410 can be by photoelectric sensor
310 receive.Received optical signal is obtained the cigarette in air according to optical absorption spectra inverting by spectrometer analysis photoelectric sensor 310
Concentration is spent, display connection spectrometer simultaneously shows testing result.
The structural principle of smoke intensity detection optical system is described in detail above, uses this system pair below
Flue gas concentration is detected.Specific steps are as follows:
Firstly, selecting LED light tube as light-emitting component 110, and using green light as light source, LED light tube connects electricity
Source issues green light；Then, according to the focal length of plus lens 130, turn vernier knob 133 adjusts the upper bottom of plus lens 130
Setting falls within its focus just on secondary 140 mirror surface of collimating mirror；Then, the light that light-emitting component 110 issues passes through a collimating mirror
120 form collimated light beam, and directional light is flat using what is on 130 focusing illumination of plus lens to secondary collimating mirror 140, be relatively large in diameter
Row light beam forms the lesser collimated light beam of diameter by secondary collimating mirror 140；Furthermore by the directional light of secondary collimating mirror 140
Beam is divided into the identical collimated light beam of multiple tracks light intensity using spectroscope；Finally, after multiple tracks collimated light beam passes through flue gas to be detected
It is detected part 300 to receive, and detects spectrum, obtain result.
Example of the present invention is only that preferred embodiments of the present invention will be described, not to present inventive concept and
Range is defined, and under the premise of not departing from design philosophy of the present invention, this field engineers and technicians are to technology of the invention
The various changes and improvements that scheme is made should all fall into protection scope of the present invention.
Claims (10)
1. a kind of smoke intensity detection optical system, including light source part (100), light splitting part (200) and detection part (300)；Institute
Stating light source part (100) includes light-emitting component (110), and light splitting part (200) includes multi-disc spectroscope, it is characterised in that: described
Light source part (100) further includes a collimating mirror (120), plus lens (130) and secondary collimating mirror (140), the luminous member
Part (110), a collimating mirror (120), plus lens (130) and secondary collimating mirror (140) are in the light-emitting component (110) illumination
It is set gradually on direction；The spectroscope, which is set to, to be subjected to the light-emitting component (110) sending and penetrates secondary collimating mirror
(140) light beam, and the light beam can be divided into multiple tracks collimated light beam by spectroscope described in multi-disc；The detection part (300)
For receiving the multiple tracks collimated light beam, and detect the spectrum of the multiple tracks collimated light beam.
2. a kind of smoke intensity detection optical system according to claim 1, it is characterised in that: the light source part (100) is also
Including successively end to end light source supports cylinder (150), middle cylinder (160) and lower cylinder (170) from top to bottom；The hair
Optical element (110) and collimating mirror (120) up and down direction are set to light source and support in cylinder (150), the plus lens (130)
It is set in middle cylinder (160), the secondary collimating mirror (140) is set in lower cylinder (170).
3. a kind of smoke intensity detection optical system according to claim 2, it is characterised in that: the light source supports cylinder (150)
Interior installation light source seat board (111) and a lens seat board (121) up and down；Light-emitting component (110) array is mounted on light source base
Plate (111), direction of illumination is against lens seat board (121) side；Collimating mirror (120) is mounted on a lens mount
Plate (121), each light-emitting component (110) are directed at a collimating mirror (120).
4. a kind of smoke intensity detection optical system according to claim 3, it is characterised in that: the light-emitting component (110) is in
Honeycomb hierarchal arrangement meets T=1+ (n-1) * 6, in which: T is light-emitting component (110) quantity, and n is light-emitting component (110) row
The number of plies of cloth.
5. a kind of smoke intensity detection optical system according to Claims 2 or 3 or 4, it is characterised in that: the light source supports cylinder
(150) upper end of lower end and middle cylinder (160) is socketed connection；The light source supports the inside of cylinder (150) lower end circumferentially
Direction is provided with multiple Elastic buckles (154), and the inside of middle cylinder (160) upper end is equipped with clamping bulge loop (162), elasticity
Buckle (154) may be stuck in clamping bulge loop (162)；It is provided on Elastic buckle (154) described at least one and stretches out light source branch
Hold the plectrum (156) of cylinder (150) outside.
6. a kind of smoke intensity detection optical system according to claim 2, it is characterised in that: in the middle cylinder (160)
Mounted lens clamper (131)；Plus lens (130) periphery covers in elastic pressing ring (134), and is supported in the lens
On support rim (1312) on the inside of clamper (131)；It is screwed in the compression rotation set of the lens clamp (131) upper end
(132) plus lens (130) are clamped by squeezing the elastic pressing ring (134).
7. a kind of smoke intensity detection optical system according to claim 6, it is characterised in that: the middle cylinder (160) is outside
Side screw thread is screwed with vernier knob (133), and the medial surface of vernier knob (133) is equipped with fine tuning annular groove (1331)；The lens
Stabilizer blade (1313) on clamper (131) outer peripheral surface passes through the stabilizer blade via hole (164) opened up on the middle cylinder (160) and props up afterwards
It supports in the fine tuning annular groove (1331) of the vernier knob (133).
8. a kind of smoke intensity detection optical system according to claim 2, it is characterised in that: the spectroscope is mounted on
In light splitting cabinet (210) below lower cylinder (170)；It is described light splitting cabinet (210) upper end have for light emission enter into
Unthreaded hole (230), the light hole (240) that there is the light beam after spectroscope is divided to project for lower end.
9. a kind of smoke intensity detection optical system according to claim 1 or 8, it is characterised in that: the light splitting part (200)
Flue gas channel part (400) are set between detection part (300)；The flue gas channel part (400) includes can be by from light splitting
The flue gas cabinet (410) that mirror is passed through to the light beam of detection part (300)；In the flue gas case of the parallel beam direction
On body (410) opposite sides box body wall, fan (420) wherein are installed on the box body wall of side, open up stomata on the box body wall of the other side
(411) or on the box body wall of two sides fan (420) are respectively mounted.
10. a kind of smoke intensity detection method, step include: firstly, light-emitting component (110) power on it is luminous；Then, shine member
The light that part (110) issues forms collimated light beam by a collimating mirror (120), and directional light is focused using plus lens (130)
It is irradiated on secondary collimating mirror (140), the collimated light beam being relatively large in diameter is lesser flat by secondary collimating mirror (140) formation diameter
Row light beam；Then, it is divided into the identical directional light of multiple tracks light intensity using spectroscope by the collimated light beam of secondary collimating mirror (140)
Beam；Finally, multiple tracks collimated light beam is detected part (300) reception after passing through flue gas to be detected, and detect spectrum.
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| CN201811108839.1A CN108956406B (en) | 2018-09-21 | 2018-09-21 | Smoke detection optical system and method thereof |
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|---|---|---|---|
| CN201811108839.1A CN108956406B (en) | 2018-09-21 | 2018-09-21 | Smoke detection optical system and method thereof |
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| CN108956406B CN108956406B (en) | 2023-09-19 |
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| CN111380786A (en) * | 2020-03-31 | 2020-07-07 | 北京工业大学 | Powder feeding type additive manufacturing powder behavior detection method |
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