CN110501298A - A kind of method improving hot wet process light path system stability and its gas chamber, measuring instrument - Google Patents
A kind of method improving hot wet process light path system stability and its gas chamber, measuring instrument Download PDFInfo
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- CN110501298A CN110501298A CN201910813875.6A CN201910813875A CN110501298A CN 110501298 A CN110501298 A CN 110501298A CN 201910813875 A CN201910813875 A CN 201910813875A CN 110501298 A CN110501298 A CN 110501298A
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- 238000000034 method Methods 0.000 title claims abstract description 38
- 230000008569 process Effects 0.000 title claims abstract description 17
- 239000013307 optical fiber Substances 0.000 claims abstract description 32
- 230000003287 optical effect Effects 0.000 claims abstract description 31
- 239000000835 fiber Substances 0.000 claims abstract description 15
- 238000009413 insulation Methods 0.000 claims abstract description 11
- 238000003466 welding Methods 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims description 57
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 24
- 239000003546 flue gas Substances 0.000 claims description 24
- 241000233855 Orchidaceae Species 0.000 claims description 2
- 239000000571 coke Substances 0.000 claims description 2
- 238000005070 sampling Methods 0.000 description 11
- 238000005259 measurement Methods 0.000 description 10
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- 238000012423 maintenance Methods 0.000 description 7
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- 230000002572 peristaltic effect Effects 0.000 description 3
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000005350 fused silica glass Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
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- 229910052724 xenon Inorganic materials 0.000 description 2
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/33—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/06—Illumination; Optics
- G01N2201/063—Illuminating optical parts
- G01N2201/0638—Refractive parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/08—Optical fibres; light guides
- G01N2201/0826—Fibre array at source, distributing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/10—Nuclear fusion reactors
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Abstract
The present invention provides a kind of methods and its gas chamber for improving hot wet process light path system stability, measuring instrument, the method is the incident light of launching fiber end sending via the directional light become after collimation lens with collimation lens primary optical axis in angle, the directional light via after wedge-shaped mirrors become the light parallel with collimation lens primary optical axis, after the parallel light is reflected via prism of corner cube, emergent light and incident light deflect 180 °, successively pass through wedge-shaped mirrors again, collimation lens converges to reception optical fiber end, the gas chamber includes vacuum heat insulation tube, inner tube inside vacuum heat insulation tube is set, the inner tube front end flange of inner tube both ends welding, end flanges after inner tube, prism of corner cube is installed in inner tube front end flange, collimation lens is installed in end flanges after inner tube, wedge-shaped mirrors are also installed in said inner tube front end flange, and wedge-shaped mirrors are close to inner tube side, institute Stating wedge-shaped mirrors is the thin double-wedge in thick middle both sides.Gas chamber, measuring instrument stability of layout are greatly improved, and installs, debug conveniently.
Description
Technical field
The invention belongs to flue gas inspection technical fields, and in particular to a method of improve hot wet process light path system stability
And its gas chamber, measuring instrument.
Background technique
SO in the flue gas of flue gas emission monitoring needs measurement at present2、NO、NO2Etc. pollutant concentrations, ultraviolet suction can be used
Receipts method measures.Pollutant concentration has hot wet process and cryochem in usual ultraviolet absorption method measurement flue gas.Wherein hot wet process without
It needs to dehumidify, can be avoided SO in condensation process2、NH3Etc. component solution loss soluble easily in water, and gas chamber can be placed in and be adopted
Inside sample pipe, it is designed to the structure of sampling pipe and host one, it is easy to carry, thus it is more suitable Portable smoke analysis instrument.
But during hot wet sample measurement flue gas composition, gas chamber alternately and repeatedly changes often in from environment temperature to more than 120 DEG C
In the process, for the stability of gas chamber optical path, more stringent requirements are proposed.The air chamber structure of current hot wet flue gas analyzer is general
The store-through disadvantage poor in stability, the optical signal that photoelectric sensor receives largely by the influence of air chamber structure,
When air chamber structure has slight deformation, it will result in the light energy received and vary widely, seriously affected hot wet flue gas
The reliability of measurement method.In addition to this, gas chamber is located in sampling pipe, there is also the big disadvantage of maintenance process difficulty, need by
After gas chamber is disassembled out of sampling pipe, photosystem can be wiped and be safeguarded, also need adjustment optical path again after the completion.
Therefore, the disadvantage that the current hot generally existing maintenance period of wet flue gas analyzer is short, maintenance difficulties are big.
China Patent No.: 201621006601.4, patent name is " a kind of measurement gas chamber and to be equipped with the ultraviolet of the gas chamber
The patent document of flue gas analyzer " provide it is a kind of using hot wet process mode measure concentration of flue gas pollutants gas chamber and equipped with should
The ultraviolet flue gas analyzer of gas chamber.The measurement gas chamber uses the dichotomous optical fiber of Y type, wherein an optical fiber connection light source is known as emitting
Optical fiber, another connection spectrometer are known as reception optical fiber, and common end connects gas chamber.Connect the launching fiber hair in the optical fiber of gas chamber
It projects ultraviolet light to project back reflection on the other end of reflecting mirror of gas chamber by the laggard air inlet chamber of lens and return on lens, quilt
Lens reach an other optical fiber end after assembling, and reach spectrometer by reception optical fiber.The lens and reflection pitch-angle of the structure
Slight change occurs for degree, and will lead to return to the light energy of reception optical fiber end, great changes will take place.And the frequent high/low temperature of gas chamber
Alternately change, instrument also often carries, especially moves on tens meters high of sampling monitoring platform, the mechanical structure of gas chamber it is steady
It is qualitative to hardly result in guarantee, therefore the program is unable to satisfy the needs of Portable ultraviolet flue gas sampling.
China Patent No.: 201220570891.0, patent name is the patent of " flue gas analyzer based on prism of corner cube "
Document also provides a kind of flue gas analyzer that concentration of flue gas pollutants is measured using hot wet process mode.The flue gas analyzer includes
Three branches of light source, spectrometer, y-type optical fiber, gas chamber, y-type optical fiber connect with one end of light source, spectrometer and gas chamber respectively,
The one end connecting in the gas chamber with y-type optical fiber branch is equipped with collimation lens, and the other end is equipped with prism of corner cube in gas chamber,
Air inlet and air outlet are provided on outer wall in the middle part of gas chamber.The axis of prism of corner cube and the axis of collimation lens are located at same
On straight line.The optical path of the structure is returned by original optical path, and therefore, only a small amount of luminous energy reaches receiving end, that is, spectrometer, real
The value of border application is little, is also unable to satisfy the needs of Portable ultraviolet flue gas sampling.
Summary of the invention
In view of the deficiencies of the prior art, the object of the present invention is to provide a kind of sides for improving hot wet process light path system stability
Method and its gas chamber, measuring instrument overcome light path system de-stabilising effect Measurement reliability existing for existing hot wet flue gas analyzer,
And analyzer it is difficult in maintenance the problems such as.
The present invention provides a kind of method for improving hot wet process light path system stability,
The method are as follows: the incident light that launching fiber end issues becomes and collimation lens primary optical axis via after collimation lens
In the directional light of angle, the directional light is described parallel via becoming the light parallel with collimation lens primary optical axis after wedge-shaped mirrors
After light is reflected via prism of corner cube, emergent light and incident light deflect 180 °, then successively converge to and connect by wedge-shaped mirrors, collimation lens
Optical fiber end is received,
The wedge-shaped mirrors apex angle are as follows:Wherein, launching fiber and reception optical fiber centre distance are LIt is fine, collimation is thoroughly
Mirror focal length is f ', and n is the refractive index of wedge medium.
The derivation process of wedge-shaped mirrors apex angle are as follows:
The angle of the directional light and collimation lens primary optical axis isWherein, launching fiber and reception optical fiber center
Distance is LIt is fine, collimation lens focal length is f '；
The wedge-shaped mirrors deviation angle approximate formula are as follows: θ=(n-1) α, wherein n is the refractive index of wedge medium, and α is wedge
Apex angle,
Light becomes the light parallel with collimation lens primary optical axis through wedge-shaped mirrors, and the deviation angle is equal to
Then
Then wedge-shaped mirrors apex angle are as follows:
The present invention also provides a kind of gas chamber, including vacuum heat insulation tube, the inner tube inside vacuum heat insulation tube, inner tube are set
The inner tube front end flange of both ends welding, end flanges after inner tube install prism of corner cube in inner tube front end flange, after inner tube in end flanges
Collimation lens is installed, on the basis of existing technology, the present invention further makes improvements: also installing in said inner tube front end flange
Wedge-shaped mirrors, and wedge-shaped mirrors, close to inner tube side, the wedge-shaped mirrors are the thin double-wedge in thick middle both sides.
Optical fiber mounted in collimation lens one end gas chamber on, launching fiber end issue incident light via after collimation lens at
For the directional light for collimation lens primary optical axis being in angle, since launching fiber and the optical fiber head of reception optical fiber are side by side and about key light
Axial symmetry, so launching fiber deviates primary optical axis, directional light of the incident light after collimation lens and primary optical axis form angle.
The incident light becomes and collimation lens primary optical axis via the directional light formed after collimation lens via after wedge-shaped mirrors
Parallel light, wedge-shaped mirrors are thick middle, and both sides are thin about the transparent fused quartz of centrosymmetric double-wedge, are emitted after directional light is incident
Light can be deflected to primary optical axis, and the angle of deflection is related with the apex angle of wedge-shaped mirrors and refractive index, and the wedge-shaped mirrors that the present invention designs are just
Well so that emergent light becomes the light parallel with primary optical axis after directional light is incident.
After the parallel light via wedge-shaped mirrors outgoing is reflected via prism of corner cube, emergent light and incident light are deflected
180 °, then successively reception optical fiber end is converged to by wedge-shaped mirrors, collimation lens.According to the characteristic of prism of corner cube, incident light warp
Emergent light and incident light after crossing three reflective surfaces of prism of corner cube are in 180 °, and emergent light is parallel with incident light, due to wedge shape
Mirror is double-wedge, and parallel emergent light can deflect after wedge-shaped mirrors to primary optical axis, that is, the light of backhaul can still be protected
Hold the angle of one with primary optical axis, the incident light that the angle and launching fiber end issue after collimation lens with primary optical axis shape
At the same angle of angle, reception optical fiber end just convergence reflex return light energy.
Since the deflection angle of wedge-shaped mirrors is basically unchanged when incidence angle varies slightly, and prism of corner cube makes incident light always
Line deflects 180 °, and therefore, the gas chamber is insensitive to the setting angle of wedge-shaped mirrors, prism of corner cube, and air chamber structure slightly deforms, and causes
Angle when changing a lot of wedge-shaped mirrors, prism of corner cube, the light energy that reception optical fiber receives is held essentially constant, and has pole
High stability.
It preferably, further include adjusting component to adjust prism of corner cube, wedge-shaped mirrors, the adjusting component is arranged in inner tube
Inside front end flange, including fixed cylinder, cover, rubber mat, the fixed cylinder are the cylindrical structure that there is opening at both ends, the wedge-shaped mirrors
Apex angle side withstands on one end inside fixed cylinder, and the plane of incidence of the prism of corner cube is close to the wedge-shaped mirrors other side, the pyramid rib
Rubber mat is withstood in reflecting surface one end of mirror, and the cover withstands rubber mat and connect with fixed cylinder.When maintenance, for example need to wipe pyramid rib
Mirror and wedge-shaped mirrors only need to unscrew cover, and the entire component that adjusts can also be removed, and adjust the angle of prism of corner cube and wedge-shaped mirrors
When, it is only necessary to rotation adjusts component.The reflecting surface of prism of corner cube of the present invention refers to three orthogonal faces, enters
The face of penetrating refers to that the present invention is used as the face of light incidence and outgoing, can also be called exit facet.
Preferably, the said inner tube front end flange other end welds outer tube front end flange.
It preferably, further include to filter the level-one filter core of flue gas, second level filter core, the second level filter core is arranged before inner tube
In end flanges, the level-one filter core is arranged in appearance front end flange close to second level filter core.Secondary filtration guarantees measurement accuracy.
It preferably, further include filter core pressure cap, the filter core pressure cap withstands hold-carrying before level-one filter core and second level filter core and outer tube
Orchid is fixed.When prism of corner cube, wedge-shaped mirrors need to safeguard, lower filter pressure cap need to be only unloaded, level-one filter core is taken out and second level filter core is
It can.
Preferably, the collimation lens is fixed in inner tube rear end flange by lens fixed cylinder.
It preferably, further include fibre-optical splice, described fibre-optical splice one end is set in outside lens fixed cylinder, and one end is stretched out true
Empty instlated tubular.
It preferably, further include outlet nozzle, the outlet nozzle is fixed on after inner tube in end flanges, and is connected with internal tube
It is logical.
The present invention also provides a kind of measuring instrument, the measuring instrument is equipped with above-mentioned gas chamber.
Beneficial effects of the present invention:
1, after the light that method launching fiber end of the invention issues becomes directional light by collimation lens, as long as can irradiate
Onto prism of corner cube, it will be able to guarantee that the light returned returns to reception optical fiber end, greatly improve hot wet process light path system
The optical path of stability, gas chamber, measuring instrument based on the design of this method principle is insensitive to sampling pipe deformation, and stability is very high,
Reduce optical path failure rate；
2, two filter cores are removed when installing or debug, safeguarding can adjust component by rotation to be adjusted into spectrometer
Light energy completely solve the ultraviolet flue gas analysis instrument of hot wet process problem difficult in maintenance without removing gas chamber.
3, become dirty when needing to wipe due to contact flue gas when optical element surface, only need to remove two filters from front end
Core and adjusting component, i.e. the erasable pyramid plane of incidence；Collimation lens can be using length of the front end with absorbent cotton or lens paper
Bar is wiped using alcohol, is assembled as it is after having wiped, it is only necessary to adjust the optical signal that component will receive by rotation
It is adjusted to required intensity.
Detailed description of the invention
Fig. 1 is the light path principle figure of the method for the present invention,
Fig. 2 is the structural schematic diagram of gas chamber of the present invention,
Fig. 3 is the structural schematic diagram of wedge-shaped mirrors of the present invention,
Fig. 4 is the structural schematic diagram of inner tube front end flange of the present invention,
Fig. 5 is the structural schematic diagram of end flanges after inner tube of the present invention,
Fig. 6 is the explosive view that the present invention adjusts component,
Fig. 7 is measuring instrument external structure schematic diagram of the present invention,
Fig. 8 is measuring instrument schematic diagram of internal structure of the present invention.
Attached drawing mark:
1, vacuum heat insulation tube, 2, inner tube, 3, inner tube front end flange, 31, air slot, 4, end flanges after inner tube, 41, clamp screw
Nail hole, 42, venthole, 5, prism of corner cube, 6, collimation lens, 7, wedge-shaped mirrors, 8, y-type optical fiber, 9, adjusting component, 91, fixed cylinder,
92, cover, 93, rubber mat, the 94, first O-ring, the 95, second O-ring, 96, third O-ring, 10, outer tube front end flange, 11, one
Grade filter core, 12, secondary filtration, 13, filter core pressure cap, 14, first-level filtering core rubber pad, 15, lens fixed cylinder, 16, fibre-optical splice, 17,
Outlet nozzle, 18, gas chamber, 20, mainframe box, 21, gas chamber transfer tube, 22, handle, 23, display screen, 24, power interface, 25, data
Interface, 26, sampling pump, 27, spectrometer, 28, industrial personal computer, 29, xenon flash lamp, 30, electrochemical sensing device assembly, 31, peristaltic pump,
32, condensation removes water assembly, 33, slave computer circuit plate.
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 specific embodiment described herein is used only for explaining the present invention, no
It can be interpreted as the restriction to the specific protection scope of the present invention.
Embodiment
Referring to Fig.1, the method for the hot wet process light path system stability of raising of the present embodiment are as follows: 8 launching fiber end of y-type optical fiber
The incident light that portion issues is via the directional light become after collimation lens 6 with 6 primary optical axis of collimation lens in angle, that is, light group a
Be parallel to each other with the light of light group b, light group a and light group b have two light respectively in figure, due to light spacing very
It is small, thus diagram exist be overlapped, the directional light via after wedge-shaped mirrors 7 become the light parallel with 6 primary optical axis of collimation lens, it is described
Collimation lens 6, the primary optical axis of wedge-shaped mirrors 7 and prism of corner cube 5 it is coaxial, after the parallel light is reflected via prism of corner cube 5, out
It penetrates light and incident light deflects 180 °, then successively converge to reception optical fiber end, that is, light group by wedge-shaped mirrors 7, collimation lens 5
C is the reflected light of light group a, and light group d is the reflected light of light group b, and the light of light group c and light group d finally converge to reception
Optical fiber.
The launching fiber and reception optical fiber centre distance of the y-type optical fiber 8 of the present embodiment are 0.4mm, the coke of collimation lens 6
It is 1.5 away from the refractive index for 20mm, wedge-shaped mirrors 7, is designed to push up according to the wedge-shaped mirrors that 7 apex angle formula of wedge-shaped mirrors calculates the present embodiment
The double-wedge that angle is 1.15 °.
The wedge-shaped mirrors apex angle are as follows:Wherein, launching fiber and reception optical fiber centre distance are LIt is fine, collimation is thoroughly
Mirror focal length is f ', and n is the refractive index of wedge medium.
Referring to Fig. 2, includes vacuum heat insulation tube 1 using the gas chamber that the above method designs, be arranged in inside vacuum heat insulation tube 1
Inner tube 2, the inner tube front end flange 3 of 2 both ends of inner tube welding, end flanges 4 after inner tube, the inner installation prism of corner cube of inner tube front end flange 3
5, the inner installation collimation lens 6 of end flanges 4 after inner tube also installs wedge-shaped mirrors 7 in said inner tube front end flange 3, and wedge-shaped mirrors 7 are close
2 side of inner tube, referring to Fig. 3, the wedge-shaped mirrors 7 are the thin transparent fused quartz material of round double-wedge in thick middle both sides.Y-type optical fiber
8 on the gas chamber of 6 one end of collimation lens.Said inner tube front end flange 3 is as shown in figure 4, inner tube front end flange 3 has air slot
31, end flanges 4 after said inner tube are as shown in figure 5, end flanges 4 have set screw hole 41, venthole 42 after inner tube.
The gas chamber designed using the present embodiment method, optical path will not be influenced by air chamber structure slight deformation, reception optical fiber
The light energy all launched almost is assembled, the precision of measurement is very high, is less prone to failure.
In order to facilitate the installation and maintenance of optical component, as a preferred embodiment of the present embodiment, the gas chamber
It further include the adjusting component 9 to adjust prism of corner cube 5, wedge-shaped mirrors 7, referring to Fig. 6, the adjusting component 9 is arranged before inner tube
Inside end flanges 3, including fixed cylinder 91, cover 92, rubber mat 93, the fixed cylinder 91 are the cylindrical structure that there is opening at both ends, institute
It states 7 apex angle side of wedge-shaped mirrors and withstands on one end inside fixed cylinder 91, the plane of incidence of the prism of corner cube 5 is another close to wedge-shaped mirrors 7
Rubber mat 93 is withstood in side, reflecting surface one end of the prism of corner cube 5, and the cover 92 withstands rubber mat 93 and connect with fixed cylinder 91.
Further for the air-tightness for adjusting component 9 is increased, referring to Fig. 6, it is cased with the first O-ring 94 on the cover 92,
Guarantee cover 92 and the closer combination of fixed cylinder 91.In order to protect prism of corner cube 5, wedge-shaped mirrors 7, in prism of corner cube 5 and wedge-shaped mirrors 7
Contact surface and the contact surface of wedge-shaped mirrors 7 and fixed cylinder 91 the second O-ring 95 and third O-ring 96 is respectively set.
Referring to Fig. 2,3 other end of inner tube front end flange of the present embodiment gas chamber welds outer tube front end flange 10.In order to guarantee
Flue gas is effectively filtered, and guarantees measurement accuracy, as a preferred embodiment of the present embodiment, the gas chamber further includes level-one
Filter core 11, second level filter core 12, the second level filter core 12 are arranged in inner tube front end flange 3, and the level-one filter core 11 is close to second level
Filter core 12 is arranged in outer tube front end flange 10.The level-one filter core 11 is Stainless Steel Agglomeration Filter Core piece, the secondary filtration 12
For polytetrafluoroethylene (PTFE) material filter core.
In order to facilitate disassembly level-one filter core 11 and second level filter core 12, as a preferred embodiment of the present embodiment, institute
Stating gas chamber further includes filter core pressure cap 13, and the filter core pressure cap 13 withstands level-one filter core 11 and second level filter core 12 and outer tube front end flange
10 is fixed.In order to increase the air-tightness of gas chamber, first-level filtering core rubber pad can be set between the level-one filter core 11 and filter core pressure cap
14.When pyramid rib, 5, wedge-shaped mirrors 7 are when needing to safeguard, lower filter pressure cap 13 need to be only unloaded, level-one filter core 11 and second level filter core 12 are taken out
, it is not necessary that entire gas chamber is dismantled.
The present embodiment collimation lens 6 is fixed by lens fixed cylinder 15 in inner tube rear end flange 4.The present embodiment gas chamber further includes
Fibre-optical splice 16, described 16 one end of fibre-optical splice are set in outside lens fixed cylinder 15, and vacuum heat insulation tube 1 is stretched out in one end.It is described
Outlet nozzle 17 is additionally provided with after inner tube in end flanges 4, the outlet nozzle 17 is connected to the venthole 42 of end flanges 4 after inner tube.Institute
It states fibre-optical splice 16 and is through the holding screw of 4 set screw hole 41 of end flanges after inner tube and fix.
Referring to Fig. 7,8, the present embodiment additionally provides a kind of measuring instrument, and the measuring instrument has mainframe box 20, mainframe box 20
On gas chamber transfer tube 21 is installed, gas chamber transfer tube 21 connects the gas chamber 18 of the present embodiment, is provided with handle on the mainframe box 20
Hand 22, display screen 23, power interface 24, data-interface 25.Mainframe box is internally provided with sampling pump 26, spectrometer 27, industrial personal computer
28, xenon flash lamp 29, electrochemical sensing device assembly 30, peristaltic pump 31, condensation remove water assembly 32, slave computer circuit plate 33.Measurement
Other structures outside instrument deaerating chamber are the prior art, repeat no more its connection relationship.
When the measuring instrument work of the present embodiment, sampling pump 26 works, and passes through flue gas from the filter core pressure cap 13 of gas chamber end
After level-one filter core 11,12 double-filtration of second level filter core, entered in inner tube 2 from the air slot 31 of inner tube front end flange 3, and pass through
Gas chamber is discharged from outlet nozzle 17 in the venthole 42 of end flanges 4 after inner tube, and outlet nozzle 17 passes through the condensation in hose and mainframe box 20
Except water assembly 32 connects, the cool condensate that condensation is generated except water assembly enters peristaltic pump 31 by hose and is discharged, the cigarette after water removal
After gas enters sampling pump, then electrochemical sensing device assembly 30 entered by hose, finally by with electrochemical sensor group
The gas-guide tube discharge that part 30 is connected to.
Claims (10)
1. a kind of method for improving hot wet process light path system stability, it is characterised in that: the method is launching fiber end hair
Incident light out is via the directional light become after collimation lens with collimation lens primary optical axis in angle, and the directional light is via wedge shape
Become the light parallel with collimation lens primary optical axis after mirror, after the parallel light is reflected via prism of corner cube, emergent light and incidence
Light deflects 180 °, then successively converges to reception optical fiber end by wedge-shaped mirrors, collimation lens,
The wedge-shaped mirrors apex angle are as follows:Wherein, launching fiber and reception optical fiber centre distance are LIt is fine, collimation lens coke
Away from for f ', n is the refractive index of wedge medium.
2. a kind of gas chamber, including vacuum heat insulation tube, the inner tube inside vacuum heat insulation tube is set, before the inner tube of inner tube both ends welding
End flanges after end flanges, inner tube install prism of corner cube in inner tube front end flange, install collimation lens in end flanges after inner tube,
It is characterized in that: wedge-shaped mirrors being also installed, and wedge-shaped mirrors, close to inner tube side, the wedge-shaped mirrors are centre in said inner tube front end flange
The thin double-wedge in thick both sides.
3. gas chamber according to claim 2, it is characterised in that: further include the adjusting to adjust prism of corner cube, wedge-shaped mirrors
Component, the adjusting component is arranged inside inner tube front end flange, including fixed cylinder, cover, rubber mat, and the fixed cylinder is both ends
There is the cylindrical structure of opening, wedge-shaped mirrors apex angle side withstands on one end inside fixed cylinder, the plane of incidence of the prism of corner cube
Close to the wedge-shaped mirrors other side, rubber mat is withstood in reflecting surface one end of the prism of corner cube, and the cover withstands rubber mat and fixed cylinder connects
It connects.
4. gas chamber according to claim 2, it is characterised in that: the said inner tube front end flange other end welds hold-carrying before outer tube
It is blue.
5. gas chamber according to claim 4, it is characterised in that: further include to filter the level-one filter core of flue gas, second level filter
Core, the second level filter core are arranged in inner tube front end flange, and the level-one filter core is arranged close to second level filter core in outer tube front end method
In orchid.
6. gas chamber according to claim 5, it is characterised in that: further include filter core pressure cap, the filter core pressure cap withstands level-one
Filter core and second level filter core are fixed with outer tube front end flange.
7. gas chamber according to claim 2, it is characterised in that: the collimation lens is fixed in inner tube rear end flange by lens
Cylinder is fixed.
8. gas chamber according to claim 7, it is characterised in that: further include fibre-optical splice, described fibre-optical splice one end is arranged
Outside lens fixed cylinder, vacuum heat insulation tube is stretched out in one end.
9. gas chamber according to claim 2, it is characterised in that: further include outlet nozzle, after the outlet nozzle is fixed on inner tube
In end flanges, and it is connected to internal tube.
10. a kind of measuring instrument, it is characterised in that: the measuring instrument is equipped with gas chamber described in claim 2-9 any one.
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| CN110501298B (en) | 2023-05-30 |
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