CN107014749B - A kind of original position reflective laser monitors the optical transmitting and receiving system of gas in flue - Google Patents
A kind of original position reflective laser monitors the optical transmitting and receiving system of gas in flue Download PDFInfo
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- CN107014749B CN107014749B CN201710258619.6A CN201710258619A CN107014749B CN 107014749 B CN107014749 B CN 107014749B CN 201710258619 A CN201710258619 A CN 201710258619A CN 107014749 B CN107014749 B CN 107014749B
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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
- G01N21/15—Preventing contamination of the components of the optical system or obstruction of the light path
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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
- G01N21/15—Preventing contamination of the components of the optical system or obstruction of the light path
- G01N2021/151—Gas blown
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Abstract
The invention discloses a kind of optical transmitting and receiving systems of gas in reflective laser monitoring flue in situ, which includes optical transmitting and receiving device；The optical transmitting and receiving device is made of the integral type laser transmitting-receiving device and laser reflecting device being oppositely arranged；The integral type laser transmitting-receiving device includes optical path protection cylinder and the laser transmitting-receiving module for being located at the optical path protection cylinder proximal end, and the laser reflecting device includes another optical path protection cylinder and the corner reflector for being located at another optical path protection cylinder proximal end；The optical path protection cylinder and another optical path protection cylinder are from proximal end to distally including linkage section interconnected and extended segment, it is characterized in that, the optical path protection cylinder of the integral type laser transmitting-receiving device further includes optical path adjusting section, which is located between the linkage section and extended segment；The optical path adjusting section includes one section of metal bellows and four adjusting screw rods.
Description
Technical field
The present invention relates to the devices or instrument that are convenient for optic test, in particular to prevent the component of Optical devices from staiing
Or the device of optical path obstacle.
Background technique
For increasingly serious Present Situation of Air Pollution, various countries pay much attention to monitoring thermal power plant, Metallurgical Factory, chemical plant and water
The flue gas emission of the stationary sources such as mud factory, National Environmental Protection Agency also all formulate and have promulgated one after another relevant discharge standard, cause
Power is in the smoke pollution for controlling industrial fixed-contamination boiler.In recent years, carried out a large amount of spectroscopy detection technique both at home and abroad to answer
Used in the correlative study work of Pollution Gas detection, spectroscopy detection technique has high-precision, fast response time, non-contact
Many advantages, such as formula measures.Environmental protection administration is realized by discharging the real-time continuous monitoring of flue to polluted gas to thermal power plant, metallurgy
The supervision of the flue gas emission of the stationary sources such as factory, chemical plant and cement plant.
The measurement method of air flue emission pollutant mainly has extraction-type and in-situ type to measure two kinds, wherein extraction-type detection side
Formula is extracted flue gas out using dedicated heating sampling probe from flue, enters detection after heat tracing transmission and necessary pretreatment
Unit, the pretreatment system usually required that is extremely complex, and detection unit requires tightness height, and for such as sulfur dioxide, ammonia
The easy adsorbed gas such as gas, the gas componant being drawn into detection unit can lose, and cause detection error very big.Relative to pumping
Optical transmitting and receiving device is directly mounted on flue by modus ponens, in-situ type measurement method, make to measure light pass through tested flue gas directly into
The method of row detection, structure is simple, easy for installation, and without complicated pretreatment system, the response time is fast, and measurement result has more
Authenticity.
Application publication number is that " one kind is for carrying out flue gas in flue disclosed in the application for a patent for invention of CN103575659A
The device of detection " is a kind of device of in situ detection flue gas, which is made of laser beam emitting device and laser receiver,
Both have one to be connected by tube body and connecting tube the optical path protection cylinder formed, the distal end of middle tube body be equipped with formed it is anti-with optical path
The gas nozzle of the vertical gas curtain of casing axis, connecting tube side wall are equipped with the interface tube of connection official jargon and pressure gas source, are passed through compression
Positive pressure can be formed after air in optical path protection cylinder, and forms the gas of isolation flue gas at the remote outlet position of optical path protection cylinder
Curtain, the two collective effect can effectively prevent flue gas in flue from polluting to optical device.But side described in the patent application
Case still has following deficiency: 1, lacking optical path adjusting mechanism, installation difficulty is big；2, the Laser emission component in laser beam emitting device
It is all fixedly connected between the laser pick-off component in laser receiver and respective optical path protection cylinder, when dismantling cleaning
It has to recalibrate optical path, it is not only time-consuming and laborious, but also need certain professional skill that could complete；3, lack control institute
The control means of gas curtain flow velocity are stated, and is arranged on the inner tubal wall of the first and second tube body 10,10 ' (being equivalent to optical path protection cylinder) and connects
(multiple) through-hole 12 (see its specification [0011] section and Fig. 2) of logical first and second tube body 10,10 ' lumens and clip cavity, Wu Fabao
The pressure of " clip cavity " interior air described in card, although therefore the gas curtain can completely cut off flue gas, it is axially flowed along optical path protection cylinder
Dynamic air can rush in flue and change the flue gas concentration in optical path, and then seriously affect the accuracy of monitoring result.
Authorization Notice No. is " a kind of original with instrument flange disclosed in the utility application of CN 203870006U
The optical path protection cylinder of position formula laser gas analyzer ", the gas analyzer is equipped with optical path adjusting section, the optical path adjusting section packet
A pair of of instrument flange is included, which is equipped with one and tightens bolt and two facula positions adjusting bolts, passes through adjusting
It tightens bolt and facula position adjusts the adjusting that bolt tightness carries out left-right position and upper and lower position to hot spot.However it is above-mentioned
The adjustable range of facula position regulation scheme is smaller, if device install when transmitting unit and receiving unit axis runout compared with
Greatly, then possibly optical path can not be calibrated.It has to recalibrate optical path and edge in addition, the utility model is clearly present when dismantling cleaning
The air that optical path protection cylinder axially flows can rush in flue and change the deficiency of the flue gas concentration in optical path.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of optics of gas in reflective laser monitoring flue in situ
Receive-transmit system, the optical transmitting and receiving system have laser angle adjustable range big, and the cleaning of optical device is simply and easily excellent
Point.
The technical solution that the present invention solves above-mentioned technical problem is:
A kind of original position reflective laser monitors the optical transmitting and receiving system of gas in flue, which includes optical transmitting and receiving dress
It sets；The optical transmitting and receiving device is made of the integral type laser transmitting-receiving device and laser reflecting device being oppositely arranged；Described
Integral type laser transmitting-receiving device includes optical path protection cylinder and the laser transmitting-receiving module for being located at the optical path protection cylinder proximal end, and described swashs
Light reflecting device includes another optical path protection cylinder and the corner reflector for being located at another optical path protection cylinder proximal end；
The optical path protection cylinder and another optical path protection cylinder include linkage section interconnected from proximal end to distal end and prolong
Stretch section, wherein the linkage section of the optical path protection cylinder is equipped with isolation slide far from the one of the extended segment；The optical path
The outer wall of the linkage section of protection cylinder is equipped with the second suction nozzle；
The extended segment of the optical path protection cylinder is made of the outer cylinder and inner cylinder being coaxially set-located, the outer cylinder and interior
Gap is equipped between cylinder；The end of the extended segment of the optical path protection cylinder is equipped with gas curtain spray head, which is a rectangle
Box, the sandwich which there is the gap between the outer cylinder and inner cylinder to be connected to；The rectangular box with it is described
Optical path protection cylinder axis is respectively equipped with the loophole coaxial with optical path protection cylinder on two vertical faces, with the optical path protection cylinder
The inner wall of the sandwich of a parallel side of axis is equipped with set gap between a column and the outer cylinder and inner cylinder
Opposite another side is directed toward in the spilehole of connection, the outlet of the spilehole, which, which is equipped with, runs through the sandwich
The exhaust notch of inside and outside wall；On the outer wall of the extended segment of the optical path protection cylinder be located at the flue outside position be equipped with
First suction nozzle of the gap connection；
It is characterized in that,
The optical path protection cylinder of the integral type laser transmitting-receiving device further includes optical path adjusting section, which is located at institute
It states between linkage section and extended segment；The optical path adjusting section includes one section of metal bellows and four adjusting screw rods；Wherein, institute
The both ends for stating metal bellows are respectively equipped with ring flange, and four adjusting screw rods are evenly distributed in the four of metal bellows
Week, the both ends of each adjusting screw rod are passed through the ring flange respectively and are locked respectively by nut；
The linkage section of the optical path protection cylinder and another optical path protection cylinder opposite with the extended segment one be equipped with it is solid
Determine flange, other end is equipped with loose flange, and the isolation slide is located at the middle part of loose flange；The loose flange and fixation
Orchid is hinged by hinge, and the surrounding of the two is buckled together by active lock padlock；The loose flange and mounting flange it
Between be equipped with two positioning pins；
During using gas in above-mentioned optical transmitting and receiving device monitoring flue, the cleaning that will be accessed from the first suction nozzle
Air protects gas as the first order, protects gas for the clean air accessed from the second suction nozzle as the second level, then passes through control
Air inflow processed controls the flow velocity of first order protection gas and second level protection gas intersection in the gas curtain spray head respectively, so that the
First class of protection gas is greater than the flow velocity of second level protection gas in the flow velocity of the intersection.
Laser transmitting-receiving module and corner reflector in above scheme can refer to the reality that Authorization Notice No. is CN 204514794U
Laser emission in disclosed in new patent application " reflective laser on-line gas analysis instrument light path device " receives single
Member and laser reflection unit are implemented.
In above scheme, air flow method is coaxially provided in the linkage section of the optical path protection cylinder and another optical path protection cylinder
Circle, one of the air flow method circle covers on the isolation slide in it, and its outer wall and optical path protection cylinder linkage section is interior
A closed annular space is formed between wall, in the position close to the isolation surface of glass slide on the peripheral wall of the air flow method circle
It is uniformly provided with several purge holes being connected to the annular space.It will so be accessed by the second suction nozzle with air flow method circle
Purge gass are evenly distributed in the surrounding of isolation slide, and purge gass can be made uniformly to blow over the front of isolation slide, purging effect
More preferably.
The present invention has the following beneficial effects: compared to the prior art
1, the optical path adjusting section of the optical path protection cylinder of the integral type laser transmitting-receiving device dexterously utilizes metal bellows
Compressible and curved characteristic can be adjusted on a large scale facula position.
2, only need to open activity lock can turning over movable ring flange, expose isolation slide cleaned, cleaning finishes
Moving flange plate is directly closed afterwards and locks activity lock.Further, since the effect of positioning pin, nothing after the completion of cleaning
Optical path need to be recalibrated, so that cleaning becomes simple, easy to operate.
3, present technology has been abandoned to be connected in the set gap between outer cylinder and inner cylinder that optical path protection cylinder extended segment is arranged
Through-hole, and by control air inflow make the first order protect gas the intersection flow velocity be greater than the second level protect gas stream
Speed is formed by gas curtain using first order protection gas and second level protection vapour lock is broken, it is ensured that second level protection gas will not rush
Out optical path protection cylinder and change the flue gas concentration in optical path, and then significantly improve monitoring flue in gas accuracy.
Detailed description of the invention
Fig. 1 is that the use state of a specific embodiment of optical transmitting and receiving device in optical transmitting and receiving system of the present invention is shown
It is intended to.
Fig. 2~8 are the structural schematic diagram of integral type laser transmitting-receiving device in embodiment illustrated in fig. 1, wherein Fig. 2 is main view
Scheme (section view), Fig. 3 is the A-A cross-sectional view of Fig. 2, and Fig. 4 is the B-B cross-sectional view of Fig. 2, and Fig. 5 is the C-C cutaway view Amplified image of Fig. 3, Fig. 6
For the enlarged drawing of part I in Fig. 2, Fig. 7 is the enlarged drawing of part II in Fig. 2, and Fig. 8 is the D-D cross-sectional view of Fig. 7.
Fig. 9 is the schematic perspective view of gas curtain spray head in integral type laser transmitting-receiving device shown in Fig. 2~8.
Figure 10~11 are the structural schematic diagram of laser transmitting-receiving module in integral type laser transmitting-receiving device shown in Fig. 2~8,
In, Figure 10 is main view, and Figure 11 is left view.
Figure 12 is the structural schematic diagram of laser reflecting device in embodiment illustrated in fig. 1.
Figure 13 is the functional block diagram of optical transmitting and receiving system of the present invention.
Specific embodiment
Referring to Figure 13, optical transmitting and receiving system of the present invention is filled by the optical transmitting and receiving device of correlation type, protection gas control system
Set 18 and gas piping and valve composition.Wherein, the optical transmitting and receiving device of the correlation type is by integral type laser transmitting-receiving device
15 and laser reflecting device 16 form；Protect gas control device 18 by flow controlling unit, the first order protection gas control device and
Protect gas control device composition in the second level.The first order protection gas control device and second level protection gas control device difference
It is connected and composed by electronic flow valve with electronic flowmeter；The flow controlling unit is conventional gas flow rate control unit,
It is made of the driving circuit of single-chip microcontroller and driving electronic flow valve and electronic flowmeter.
Referring to Fig. 1, the optical transmitting and receiving system of gas includes reflection-type in the reflective laser in situ monitoring flue in this example
Optical transmitting and receiving device, which includes opposite 15 He of integral type laser transmitting-receiving device for being mounted on 1 two sides of flue
Laser reflecting device 16 is both mounted on the side wall of flue 1 by flange mounting base 2；Wherein the integral type laser is received
Transmitting apparatus is made of coaxial concatenated optical path protection cylinder 3 and laser transmitting-receiving module 4, and the laser reflecting device is by coaxial concatenated
Another optical path protection cylinder 3-1 and corner reflector 5 form.
It is described below in conjunction with structure of the attached drawing to integral type laser transmitting-receiving device 15
Referring to fig. 2, the optical path protection cylinder 3 is by sequentially coaxially concatenated extended segment 6, optical path adjusting section and 8 groups of linkage section
At.
Referring to fig. 2 and combine Fig. 6~9, the extended segment 6 include coaxial arrangement outer cylinder 6-1 and inner cylinder 6-2, the two it
Between be equipped with annular gap 6-4；One of the outer cylinder 6-1 and inner cylinder 6-2 is welded on the one side of a piece of ring flange jointly, another
Head is equipped with gas curtain spray head；The gas curtain spray head is a rectangular box 14 for being covered on outer cylinder 6-1 and the end inner cylinder 6-2, the rectangular box
The sandwich that there is 14 surroundings the gap 6-4 between the outer cylinder 6-1 and inner cylinder 6-2 to be connected to；In the rectangular box 14 with
It is respectively equipped on vertical two faces (i.e. the left and right two sides of rectangular box 14 in Fig. 7) of optical path protection cylinder axis same with optical path protection cylinder
The loophole 14-2 of axis penetrated for laser light source, a side parallel with the axis of optical path protection cylinder (i.e. rectangular box in Fig. 7
14 one sides being located above) the inner wall of the sandwich be equipped with a column and be parallel to each other spilehole 14-1, a column are stingy
The axis of hole 14-1 is located in a plane vertical with the axis of optical path protection cylinder, and all spilehole 14-1 with outer cylinder 6-1
The set gap 6-4 connection between inner cylinder 6-2；The face opposite with the face of stomata 14-1 is equipped with is (i.e. in Fig. 7 in the rectangular box 14
The underlying one side of rectangular box 14) it is equipped with the exhaust notch 14-3 for running through the sandwich inner wall and outer wall；It is described outer
The outer wall of cylinder 6-1 is equipped with connection the first suction nozzle of gap 6-4 6-5, and middle part is equipped with one for connecting with flange mounting base 2
The mounting flange 6-3 connect.
Referring to fig. 2, Fig. 3 and Fig. 5, one of the linkage section 8 of the optical path protection cylinder are coaxially provided with weldering therewith and connect together
Mounting flange 8-1, other end, which is equipped with, is coaxially tightly attached to the loose flange 8-2 of its end face；It is set in the middle part of the loose flange 8-2
There is the isolation slide 13 of an isolation flue gas, which is a planar lens being slightly slanted；The loose flange 8-2 is logical
It crosses a hinge 11 and mounting flange 8-1 is hinged, and the surrounding of the two is also uniformly equipped with the activity of both four connections
Lock 12；Be equipped with two positioning pin 8-3 between the loose flange 8-2 and mounting flange 8-1, positioning pin 8-3 mono- with it is solid
Determine flange 8-1 to be fixedly connected, other end, which extends and is inserted into loose flange 8-2, is located at determining for corresponding position on loose flange 8-2
In the hole of position；
An air flow method circle 8-4 is also coaxially provided in the linkage section 8 of the optical path protection cylinder；Air flow method circle 8-4's
One covers on the isolation slide 13 in it, and other end welds together with the mounting flange 8-1, and its outer wall and light
A closed annular space 8-5 is formed between the inner wall of road protection cylinder linkage section 8；On the peripheral wall of the air flow method circle 8-4
Four purge hole 8-6 being connected to the annular space are uniformly provided with close to the position on isolation 13 surface of slide；Described
The outer wall of the linkage section 8 of optical path protection cylinder is equipped with the second suction nozzle 8-7 being connected to the annular space 8-5.
Referring to fig. 2 and Fig. 4, the metal bellows 7 of Duan Youyi both ends flange plate of the optical path adjusting and four adjustings
Screw rod 9 forms；Wherein, the two panels ring flange mounting flange with ring flange and linkage section 8 set by extended segment 6 one respectively
8-1 is connected by fastening bolt 10；Four adjusting screw rods 9 are evenly distributed in the surrounding of metal bellows 7, each tune
The both ends of section screw rod 9 are passed through the ring flange at 7 both ends of metal bellows respectively and are locked respectively by nut.
Referring to fig. 2, and Figure 10~11 are combined, the laser transmitting-receiving module 4 is mounted on linkage section 8 one moving flange plates
On 8-2；The laser transmitting-receiving module 4 includes a square tube 4-1 being fixed on moving flange plate 8-2 and is located in square tube 4-1
Collimation lens 4-5 and photodetector 4-6, wherein the square tube 4-1 is equipped with convex lens close to one of loose flange 8-2
4-4, other end are equipped with the optical device bracket 4-2 to match with square tube 4-1 inner wall；The optical device bracket 4-2 and convex lens
Opposite one of mirror 4-4 formed by way of unilateral bevel one be in 45 ° of angles with the axis of optical path protection cylinder 3 inclined-plane, should
Note is covered with a plane reflection eyeglass 4-3 on inclined-plane；The collimation lens 4-5 is located in optical device bracket 4-2 body, and its axis
It is overlapped with the axis of optical path protection cylinder 3；Collimation lens 4-5's on the optical device bracket 4-2 and plane reflecting optics 4-3
The position that axis passes through is equipped with the hole passed through for laser；The photodetector 4-6 is fixed on square tube 4-1 side wall, and photoelectricity is visited
The axis of the axis and optical path protection cylinder 3 of surveying device 4-6 intersects vertically, and with the reflecting surface of plane reflection eyeglass 4-3 in 45 ° of folders
Angle；The position that axis on square tube 4-1 side wall in photodetector 4-6 passes through also is provided with the hole for laser light.
It is described below in conjunction with structure of the attached drawing to integral type laser reflecting device 16
Referring to Figure 12 and Fig. 1 is combined, the laser reflecting device and the difference of integral type laser transmitting-receiving device are:
1, optical path adjusting section, the extended segment 6 is omitted in another optical path protection cylinder 3-1 in the laser reflecting device 16
Ring flange set by one is directly coaxially connected with the mounting flange 8-1 of linkage section 8；
2, the laser transmitting-receiving module 4 of integral type laser transmitting-receiving device is replaced with into corner reflector 5；The corner reflector 5 wraps
It includes the support tube 5-3 on the loose flange 8-2 that one is coaxially fixed on another optical path protection cylinder 3-1 and is coaxially fixed on support tube 5-
One opposite with another optical path protection cylinder 3-1 of corner reflector 5-1, the corner reflector 5-1 on 3 bottom surface is coaxially provided with circle
The inner surface of conical socket 5-2, cone-shaped groove 5-2 are reflecting surface, and arbitrarily by the flat of cone-shaped groove 5-2 axis
In face, the angle on the both sides the cone-shaped groove 5-2 is 90 °.
Below in conjunction with the purging course of work of optical transmitting and receiving device in Brief Description Of Drawings this example:
Referring to Figure 13 and Fig. 1, Fig. 7 and Figure 12 are combined, using transmission cable and signal cable by light described in the present embodiment
It learns receive-transmit system and commercially available laser analyzer 17 connects the flue gas that can monitor the discharge of flue 1.Specific monitoring process
As described below: when work, the laser that driving circuit control laser generates is sent to integral type laser transmitting-receiving dress by transmission cable
It sets the collimation lens 4-5 in 15 laser transmitting-receiving module 4 and thus emits, the optical signal issued by collimation lens 4-5 is through flue 1
Interior flue gas is transmitted to laser reflecting device 16；Corner reflector 5-1 in laser reflecting device 16 that optical signal is parallel reflection
It goes back (the arrow signal in Figure 12)；Reflected optical signal is transmitted back to integral type laser transmitting-receiving through the flue gas in flue 1 again
The laser transmitting-receiving module 4 of device 15 is detected after plane reflection eyeglass 4-3 reflection by photodetector 4-6, photodetector
4-6 will test optical signal transformation electric signal, which send the signal conditioning unit into laser analyzer 17 through signal cable,
Analysis result is obtained after calculating by conditioning and retrieving concentration.In above-mentioned detection, analytic process, respectively to the first suction nozzle 6-
5 and second suction nozzle 8-7 be passed through clean compressed air, and the clean compressed air accessed from the first suction nozzle 6-5 is made
Gas is protected for the first order, protects gas for the clean compressed air accessed from the second suction nozzle 8-7 as the second level.Then, it protects
Flow controlling unit in shield gas control device 18 adjusts two electronic flow valves respectively, controls first respectively by controlling air inflow
The flow velocity of grade protection gas and second level protection gas intersection in the gas curtain spray head, so that first order protection gas crosses described
The flow velocity at place is greater than the flow velocity of second level protection gas.The first order protection gas in a column spilehole 14-1 of gas curtain spray head by spraying
The gas curtain of an isolation flue gas is formed in the front end of extended segment 6 out (see the filled arrows in Fig. 7)；Protect gas anti-in optical path in the second level
Positive pressure is formed in casing, and is constantly purged outward along optical path protection cylinder (see the hollow arrow in Fig. 7)；So when the second level is protected
Gas can be protected to be formed by gas curtain volume when flow of air is to close to gas curtain spray head by the first order to take from exhaust notch 14-3 row
Out, the smoke components in optical path are not influenced.
Claims (2)
1. the optical transmitting and receiving system of gas in a kind of original position reflective laser monitoring flue, which includes optical transmitting and receiving device；
The optical transmitting and receiving device is made of the integral type laser transmitting-receiving device and laser reflecting device being oppositely arranged；The one
Formula laser transmitting-receiving device includes optical path protection cylinder and the laser transmitting-receiving module for being located at the optical path protection cylinder proximal end, and the laser is anti-
Injection device includes another optical path protection cylinder and the corner reflector for being located at another optical path protection cylinder proximal end；
The optical path protection cylinder and another optical path protection cylinder are from proximal end to distally including linkage section interconnected and extended segment；
Wherein, the linkage section one far from the extended segment is equipped with isolation slide, and the outer wall of the linkage section is equipped with the
Two suction nozzles；
The extended segment is made of the outer cylinder and inner cylinder being coaxially set-located, and gap is equipped between the outer cylinder and inner cylinder；
The end of the extended segment is equipped with gas curtain spray head, which is a rectangular box, the rectangular box surrounding have with it is described outer
The sandwich of gap connection between cylinder and inner cylinder；The rectangular box two faces vertical with corresponding optical path protection cylinder axis
On be respectively equipped with the loophole coaxial with the optical path protection cylinder, the institute of a side parallel with corresponding optical path protection cylinder axis
The inner wall for stating sandwich is equipped with the spilehole that a column are connected to gap set between the outer cylinder and inner cylinder, the spilehole
Opposite another side is directed toward in outlet, which is equipped with the exhaust notch through the sandwich inside and outside wall；Described
The first suction nozzle being connected to the gap is equipped on the outer wall of extended segment in the position being located at outside the flue；
It is characterized in that,
The linkage section opposite with extended segment one is equipped with mounting flange, and other end is equipped with loose flange, the isolation glass
Piece is located at the middle part of loose flange；The loose flange and mounting flange are hinged by hinge, and the surrounding of the two is by living
It is dynamic to lock together；Two positioning pins are equipped between the loose flange and mounting flange；
The optical path protection cylinder of the integral type laser transmitting-receiving device further includes optical path adjusting section, which is located at the company
It connects between section and extended segment；The optical path adjusting section includes one section of metal bellows and four adjusting screw rods；Wherein, the gold
The both ends for belonging to bellows are respectively equipped with ring flange, and four adjusting screw rods are evenly distributed in the surrounding of metal bellows,
The both ends of each adjusting screw rod are passed through the ring flange respectively and are locked respectively by nut；
During using gas in above-mentioned optical transmitting and receiving device monitoring flue, the clean air that will be accessed from the first suction nozzle
As the first order protect gas, using clean air access from the second suction nozzle as the second level protection gas, then pass through control into
Tolerance controls the flow velocity of first order protection gas and second level protection gas intersection in the gas curtain spray head respectively, so that the first order
Gas is protected to be greater than the flow velocity of second level protection gas in the flow velocity of the intersection.
2. the optical transmitting and receiving system of gas, special in a kind of reflective laser monitoring flue in situ according to claim 1
Sign is, air flow method circle is coaxially provided in the linkage section, and one of the air flow method circle by the isolation slide cover
In it, and a closed annular space, the week of the air flow method circle are formed between its outer wall and the inner wall of the linkage section
Several purge holes being connected to the annular space are being uniformly provided with close to the position of the isolation surface of glass slide on wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710258619.6A CN107014749B (en) | 2017-04-19 | 2017-04-19 | A kind of original position reflective laser monitors the optical transmitting and receiving system of gas in flue |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710258619.6A CN107014749B (en) | 2017-04-19 | 2017-04-19 | A kind of original position reflective laser monitors the optical transmitting and receiving system of gas in flue |
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| CN107014749B true CN107014749B (en) | 2019-09-13 |
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| CN108982399B (en) * | 2018-07-09 | 2021-04-06 | 安徽建筑大学 | Flue ammonia concentration laser on-line measuring system |
| CN114324228B (en) * | 2022-01-19 | 2024-02-23 | 河南省中纬测绘规划信息工程有限公司 | Carbon emission monitoring system and method |
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