CN207198023U - Single-ended reflective laser analyzer in situ - Google Patents
Single-ended reflective laser analyzer in situ Download PDFInfo
- Publication number
- CN207198023U CN207198023U CN201721016507.1U CN201721016507U CN207198023U CN 207198023 U CN207198023 U CN 207198023U CN 201721016507 U CN201721016507 U CN 201721016507U CN 207198023 U CN207198023 U CN 207198023U
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- China
- Prior art keywords
- air chamber
- gas
- laser analyzer
- light path
- corner reflector
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model provides a kind of single-ended reflective laser analyzer in situ, belongs to environmentally friendly field of measuring technique.It solves existing laser analyzer calibration process, and time-consuming, bothersome laborious technical problem.The utility model includes light transmitting terminal, measure air chamber and photoelectric detector, a reference air chamber is provided between the smooth transmitting terminal and measurement air chamber, the reference air chamber is located in light path, the reference gas are optionally passed through gas or zero gas, and the reference gas indoor activity is provided with the governor motion of corner reflector and adjusting angle reflector position.When being demarcated, the corner reflector in reference gas room can be moved into the speculum replaced in light path in measurement air chamber by the utility model by governor motion, and be passed through gas in reference air chamber accordingly, substantially reduce the cycle of calibration process.
Description
Technical field
The utility model belongs to environmentally friendly field of measuring technique, is related to a kind of gas analyzer, particularly a kind of in situ single-ended
Reflective laser analyzer.
Background technology
In recent years, the environmental problem getting worse that rapid economic development is brought, health and safety of the environmental pollution to the mankind
Influence have become the problem of people pay close attention to, environment measuring in industrial processes turns into the weight of current technical research
Point, the especially detection to environmental gas more turn into the most important thing.The detection of environmental gas needs detection means to object gas
With high discrimination, the features such as response time is fast, high sensitivity and non-intruding gas detect.Laser gas sensing technology is sensitive
Degree, selectivity, dynamic range, signal to noise ratio and response time etc. have many advantages, such as than conventional method, more in the market
Industrial gasses are detected using laser analyzer.
Laser analyzer is after a period of time use, because the reasons such as self deterioration can cause measurement data to be forbidden, produces
Data wander is, it is necessary to periodically be demarcated.Existing laser analyzer, its scaling method are generally divided into two classes, and one kind is non-original
Position formula, i.e., demarcate to be required for disassembling laser analyzer from place to be measured every time and demarcated, in weight after the completion of demarcation
New clothes go back, and this method wastes time and energy, and are not suitable for promoting；Another kind is the scaling method of in-situ type, i.e., need not be by laser
Analyzer disassembles from operating mode can complete to demarcate, and the patent name if number of patent application is 2015110199514 is former
The patent of the scaling method of position formula gas analyzer, which disclose a kind of scaling method of in-situ type gas analyzer, it
Detection light successively by substituting gas and under test gas, carried out by substituting the functional relation between gas and under test gas
Demarcation.But the scaling method is higher for the replacement demand of under test gas, many gases can not find suitable replacement
Gas, while the functional relation between different gas and various replacement gases is different, calculates complicated, demarcation inaccuracy.
Utility model content
The purpose of this utility model is above mentioned problem be present for existing technology, it is proposed that a kind of in situ single-ended reflective
Laser analyzer, calibration process is simple, and calibration result is accurate.
The purpose of this utility model can be realized by following technical proposal：
A kind of single-ended reflective laser analyzer in situ, including light transmitting terminal, measure air chamber and photoelectric detector, the light
A reference air chamber is provided between transmitting terminal and measurement air chamber, the reference air chamber is located in light path, the reference gas
Gas or zero gas are optionally passed through, the reference gas indoor activity is provided with corner reflector and adjustment corner reflector position
The corner reflector is optionally placed among light path to be examined to photoelectricity by the governor motion put, the governor motion
Surveying device and being demarcated or the corner reflector is placed in outside light path makes light path unimpeded to ensure the laser
Analyzer is normally detected under test gas.
Preferably, one end of the reference air chamber is provided with adpting flange, the other end of the reference air chamber is provided with
Fixed seat, the reference air chamber are connected by adpting flange and light transmitting terminal, and the reference air chamber is by fixed seat with surveying
Amount air chamber is connected.
Preferably, being provided with the adjusting cavity of closing in the fixed seat, the adjusting cavity is located in light path, described
Governor motion is located in the adjusting cavity.
Preferably, being provided with a boss in the fixed seat, mounting hole, the mounting hole are provided with the boss
Connection is extraneous and adjusting cavity, and the governor motion includes rotating shaft, and the rotating shaft is plugged on that the mounting hole is interior and the both ends of rotating shaft
The mounting hole is stretched out, is fixedly installed spanner on one end that the rotating shaft is stretched out outside mounting hole, tune is stretched into the rotating shaft
Save and be provided with linking arm on one end of intracavitary, the corner reflector is fixedly installed on the linking arm.
Preferably, some sealing rings are provided between the rotating shaft and the inwall of mounting hole.
Preferably, setting jagged at the lip of the boss, the spanner is placed in the breach and described pulled
Hand energy and it is only capable of pulling back and forth in breach scope.
Preferably, being provided with adjustment seat on the smooth transmitting terminal, the adjustment seat includes being fixed on light transmitting terminal
Fixed plate and with the spaced adjustable plate of the fixed plate, detection light source be located on the adjustable plate, the adjustable plate with
Pendulum ball is provided between fixed plate, the both ends of the adjustable plate can be swung up and down using the pendulum ball as fulcrum, the adjustable plate and
Adjusting screw and fixing screws are provided between fixed plate.
Preferably, being provided with refracting telescope in the light path, detection light incident light after refracting telescope reflects detects
Device.
Compared with prior art, the utility model has following technological merit：
The utility model is provided with a single reference air chamber in light path, in addition in reference air chamber and measurement gas
One is set between room can be introduced corner reflector or removed by governor motion and be detected with adjusting position corner reflector
Light path, when laser analyzer normally detects, corner reflector removes light path, does not influence the normal detection work of laser analyzer
Make, when needing to demarcate laser analyzer, corner reflector is moved into light path by governor motion and replaces surveying
The speculum in air chamber is measured, while gas is passed through in reference air chamber, such detection light is run past after gas by corner reflector
Reflected light photodetector, obtain demarcating required data, calibration process is simple to operate, takes short, accuracy height.
Brief description of the drawings
Fig. 1 is the structural representation under normal detection state of the present utility model.
Fig. 2 is the structural representation under demarcation state of the present utility model.
Fig. 3 is the structure chart of the embodiment of the utility model one.
Fig. 4 is the explosive view of Fig. 3 embodiments.
Fig. 5 is the sectional view of Fig. 3 embodiments.
Fig. 6 is the structure chart of light transmitting terminal in Fig. 3 embodiments.
Fig. 7 is another angled arrangement figure of light transmitting terminal in Fig. 3 embodiments.
Fig. 8 is the structure chart of reference air chamber in Fig. 3 embodiments.
Fig. 9 is the structure chart of governor motion in Fig. 3 embodiments.
Figure 10 is A portions enlarged drawing in Fig. 3.
Figure 11 is the structural representation under another embodiment detection state of the utility model.
Figure 12 is structural representation under Figure 11 embodiment demarcation states.
In figure, 10, light transmitting terminal；11st, fixed plate；12nd, pendulum ball；14th, adjustable plate；14th, adjusting screw；15th, fixing screws；
20th, governor motion；22nd, linking arm；23rd, rotating shaft；24th, sealing ring；25th, spanner；27th, adjusting cavity；30th, mounting flange；40th, measure
Air chamber；41st, speculum；50th, light source is detected；60th, refracting telescope；70th, photoelectric detector；80th, corner reflector；90th, reference air chamber；
91st, level crossing；92nd, fixed seat；93rd, boss；94th, breach；95th, adpting flange；96th, mounting hole.
Embodiment
It is specific embodiment of the utility model and with reference to accompanying drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these embodiments.
As depicted in figs. 1 and 2, the utility model provides a kind of single-ended reflective laser analyzer in situ, including light hair
End 10 is penetrated, air chamber 40 and photoelectric detector 70 is measured, a reference gas is provided between the smooth transmitting terminal 10 and measurement air chamber 40
Room 90, the reference air chamber 90 are located in light path, and the reference air chamber 90 is optionally passed through gas or zero gas, institute
State the governor motion that corner reflector 80 is movably set with reference air chamber 90 and adjusts the position of corner reflector 80, the regulation machine
The corner reflector 80 is optionally placed among light path to be demarcated or incited somebody to action to photoelectric detector 70 by structure
The corner reflector 80, which is placed in outside light path, makes light path unimpeded to ensure the laser analyzer under test gas
Normally detected.
Corner reflector 80 in reference air chamber 90 is moved in and out light path by the utility model by governor motion,
Corresponding gas is passed through into reference air chamber 90 in cooperation to realize that the single-ended reflective laser analyzer in above-mentioned original position is normally examined
Survey and the switching of two kinds of mode of operations of demarcation, specific scaling method step are as follows：
S1, by governor motion corner reflector is adjusted in light path；
Gas is passed through in S2, reference air chamber until draining original gas in reference air chamber；
S3, the transmitting angular of adjustment light transmitting terminal completes light source and corner reflection as needed
Mirror to light；
S4, according to the data that photoelectric detector receives to photoelectric detector and detection light source demarcate；
S5, corner reflector removed by light path by governor motion；
Zero gas is passed through in S6, reference air chamber until draining the gas in reference air chamber.
Wherein, refer to as needed in S3 steps, can basis when the light angle sent of light transmitting terminal 10 is offset
Display data on photoelectric detector 70 adjusts light transmitting terminal 10 so that detection light and corner reflector 80 that detection light source is sent
Keep collimation.
In addition, S1 and S2 sequencing can be changed arbitrarily, S5 and S6 sequencing can be changed arbitrarily, above-mentioned steps
Order, which is changed, does not influence calibration result.
Embodiment one
As shown in Figures 3 to 10, the structure of the single-ended reflective laser analyzer in above-mentioned original position, light transmitting terminal 10, reference gas
Room 90, governor motion 20, measures air chamber 40 and photoelectric detector 70 is fixed together, and is readily transported, installs, also allows for examining
Carry out operating light during survey.
Measurement air chamber 40 is arranged on place to be measured, such as chimney by mounting flange 30.One end of reference air chamber 90 is provided with
Adpting flange 95, the other end are provided with a fixed seat 92, and reference air chamber 90 is connected by fixed seat 92 and measurement air chamber 40.Tool
Body, fixed seat 92 is connected on mounting flange 30.Such as the flue gas in chimney measures air chamber 40 when detecting
It extend into chimney internal measurement flue gas and is fixed on by mounting flange 30 on chimney wall, reference air chamber 90 is solid by fixed seat 92
It is scheduled on mounting flange 30, so, reference air chamber 90 is located on the outside of chimney, is easy to be passed through gas or zero to reference air chamber 90
Gas.
Light reflection end and photoelectric detector 70 are located at the same side and fixed by adpting flange 95 and reference air chamber 90, just
It is designed in light path.
As shown in figure 5, being provided with the adjusting cavity 27 of closing in fixed seat 92, pass through between adjusting cavity 27 and reference air chamber 90
Level crossing 91 separates, and level crossing 91 will not change the direction of light path, during so as to ensure normally to detect, reference air chamber 90 for
Light path does not influence.Be provided with a boss 93 in fixed seat 92, the interior edge of boss 93 its axially arranged have mounting hole 96, peace
Fill hole 96 and connect the outside of fixed seat 92 and the adjusting cavity 27 inside fixed seat 92.
Governor motion 20 is arranged in adjusting cavity 27, and governor motion 20 includes a rotating shaft 23, and rotating shaft 23 is plugged on above-mentioned
Can being rotated around itself in mounting hole 96 and axially, mounting hole 96 is stretched out at the both ends of rotating shaft 23, wherein, rotating shaft 23 is stretched
Enter and linking arm 22 is provided with one end in adjusting cavity 27, set between linking arm 22 and rotating shaft 23 into obtuse shape, corner reflector
80 are fixed on the end of linking arm 22.According to geometrical principle, when rotating shaft 23 rotates, band of the corner reflector 80 in linking arm 22
It is dynamic lower swung around rotating shaft 23, the purpose that corner reflector 80 was moved into or removed light path is reached with this.
The other end of rotating shaft 23 is reached outside fixed seat 92, and spanner 25 is provided with the end, passes through the band of spanner 25
Turn axle 23 rotates, and is easy to control the position of corner reflector 80.
Further, some sealing rings 24 are provided between rotating shaft 23 and the inwall of mounting hole 96 to be sealed, prevent dust
Impurity enters adjusting cavity 27 by mounting hole 96, pollutes corner reflector 8041 and level crossing 91, error is brought to testing result.
After being adjusted to the position of corner reflector 80, corner reflector 80 needs to replace measurement gas after entering light path
Speculum 41 in room 40.Therefore, the angles of corner reflector 80 require very harsh, it is necessary to corner reflector 80 and measurement gas
Speculum 41 in room 40 is highly parallel.
The position being pre-designed can be quickly moved into for the ease of corner reflector 80, in the present embodiment, in boss 93
Lip at be provided with a breach 94, and spanner 25 is contained in breach 94, the shifting of spanner 25 is limited by breach 94
Dynamic scope, the surfacing of the breach 94 and size of breach 94 is determined according to the displacement needed for corner reflector 80.In detail
For, the size of breach 94 is directly proportional to the mobile range of corner reflector 80, when spanner 25 is moved to the pole of the one end of breach 94
During extreme position, just corresponding be moved into light path can be instead of the speculum 41 in measurement air chamber 40 for corner reflector 80
Position, when spanner 25 is moved to the extreme position of the other end of breach 94, corner reflector 80 is then fully removed light path, to swashing
The normal detection of light analyzer does not have an impact, and is operated with this to simplify the bit selecting of corner reflector 80, reduces the whole of calibration process
The body used time.
When being demarcated by corner reflector 80, it is necessary to ensure that detection light reflects after sending by corner reflector 80
It can be injected into photoelectric detector 70 and be received by photoelectric detector 70, in order that the structure of whole laser analyzer is compacter
Simplify, the scope of light path is generally smaller, therefore detects the mutual position between the launch angle of light source 50 and corner reflector 80
Put and require very harsh, it is necessary to adjust the rising angle of the detection light source 50 of light transmitting terminal 10 to cooperate with the bit selecting of corner reflector 80.
In view of the foregoing, in the present embodiment, adjustment seat is provided with light transmitting terminal 10, adjustment seat includes being fixed on light
Fixed plate 11 and adjustable plate spaced with fixed plate 11 13 on transmitting terminal 10, the distance at interval according to actual conditions and
It is fixed, specific requirement is not done in the present embodiment.Detection light source 50 is arranged on adjustable plate 13, is usually located at the middle position of adjustable plate 13
The place of putting is easy to align with light path, the rising angle for detecting light source 50 can be finely adjusted, entered by adjusting adjustable plate 13
And corner reflector 80 is cooperateed with to carry out bit selecting.
As shown in Figure 6 and Figure 7, it is connected with pendulum ball 12 between adjustable plate 13 and fixed plate 11, the both wings of adjustable plate 13 can be with
Pendulum ball 12 is that fulcrum is swung, and the rising angle of detection light is finely tuned by the swing of adjustable plate 13.Adjustable plate 13 and fixation
Adjusting screw 14 and fixing screws 15 are additionally provided between plate 11, adjusting screw 14 is arranged on the both wings of adjustable plate 13, is easy to control
Adjustable plate 13 and fixed plate 11 can be connected by the amplitude of fluctuation of adjustable plate 13 processed, fixing screws 15 through adjustable plate 13, when
After rising angle regulation of the adjustable plate 13 to detection light, the position for making adjustable plate 13 by fixing screws 15 is fixed so that
In calibration process, the rising angle of detection light source 50 is accurately not easy to offset, and then ensures that the result precision of demarcation is high.
The specific work process of the present embodiment, when being detected under test gas, under test gas dynamically flows into measurement
In air chamber 40, the detection light source 50 of light transmitting terminal 10 sends detection light, and detection light enters measurement by set light path
In air chamber 40, detection light is reflected by the speculum 41 in measurement air chamber 40, the caused reflected light path after reflection is successively
Measured air chamber 40 and reference air chamber are after 90s to be injected into photoelectric detector 70, obtains testing result.In detection process, ginseng
It is zero gas than what is be passed through in air chamber 90, detection light is after 90s by reference air chamber, and testing result will not be had an impact.To photoelectricity
When detector 70 is demarcated, spanner 25 is pulled, the corner reflector 80 in adjusting cavity 27 is moved into light path, and is passed through
Adjust adjustment seat adjustment detection light shooting angle complete detection light source 50 and corner reflector 80 to light step, then to reference
Gas is passed through in air chamber 90 until being full of gas in reference air chamber 90, by detection light after gas caused detection data
Photoelectric detector 70 can be demarcated, after the completion of demarcation, corner reflector 80 is removed into light path by adjusting spanner 25,
The gas in reference air chamber 90 is gained into zero gas simultaneously.
Embodiment two
As is illustrated by figs. 11 and 12, the difference of the present embodiment and embodiment is set in the light path in the present embodiment
A refracting telescope 60 is equipped with, detection light enters photoelectric detector 70 after the refraction of refracting telescope 60, so as to reduce detection light
It is easy to photoelectric detector 70 that installation is fixed for the limitation of the installation site of photoelectric detector 70 in road.
Specific embodiment described herein is only to the utility model spirit explanation for example.The utility model institute
Category those skilled in the art can make various modifications or supplement to described specific embodiment or using similar
Mode substitute, but without departing from spirit of the present utility model or surmount scope defined in appended claims.
Claims (8)
1. a kind of single-ended reflective laser analyzer in situ, including light transmitting terminal, measure air chamber and photoelectric detector, its feature exist
A reference air chamber is provided between, the smooth transmitting terminal and measurement air chamber, the reference air chamber is located in light path, described
Reference gas are optionally passed through gas or zero gas, and the reference gas indoor activity is provided with corner reflector and adjusting angle
The governor motion of reflector position, the governor motion optionally by the corner reflector be placed among light path to
Photoelectric detector is demarcated or the corner reflector, which is placed in outside light path, makes light path unimpeded to ensure
The laser analyzer is normally detected under test gas.
2. the single-ended reflective laser analyzer in original position according to claim 1, it is characterised in that the one of the reference air chamber
End is provided with adpting flange, and the other end of the reference air chamber is provided with fixed seat, the reference air chamber by adpting flange with
Light transmitting terminal is connected, and the reference air chamber is connected by fixed seat and measurement air chamber.
3. the single-ended reflective laser analyzer in original position according to claim 2, it is characterised in that set in the fixed seat
There is the adjusting cavity of closing, the adjusting cavity is located in light path, and the governor motion is located in the adjusting cavity.
4. the single-ended reflective laser analyzer in original position according to claim 3, it is characterised in that set in the fixed seat
There is a boss, mounting hole is provided with the boss, the mounting hole connection is extraneous and adjusting cavity, the governor motion include
Rotating shaft, the rotating shaft is plugged in the mounting hole and the mounting hole is stretched out at the both ends of rotating shaft, and installation is stretched out in the rotating shaft
Spanner is fixedly installed on one end outside hole, the rotating shaft, which is stretched on one end in adjusting cavity, is provided with linking arm, the angle
Speculum is fixedly installed on the linking arm.
5. the single-ended emission-type laser analyzer in original position according to claim 4, it is characterised in that the rotating shaft and mounting hole
Inwall between be provided with some sealing rings.
6. the single-ended reflective laser analyzer in original position according to claim 4, it is characterised in that at the lip of the boss
Set jagged, the spanner is placed in the breach and the spanner energy and is only capable of pulling back and forth in breach scope.
7. the single-ended reflective laser analyzer in original position according to any one of claims 1 to 6, it is characterised in that the light hair
Penetrate on end and be provided with adjustment seat, the adjustment seat include the fixed plate being fixed on light transmitting terminal and with the fixed plate interval
The adjustable plate of setting, detection light source are located on the adjustable plate, and pendulum ball, the tune are provided between the adjustable plate and fixed plate
The both ends of section plate can be swung up and down using the pendulum ball as fulcrum, and adjusting screw is provided between the adjustable plate and fixed plate and is consolidated
Determine screw.
8. the single-ended reflective laser analyzer in original position according to claim 7, it is characterised in that set in the light path
Refracting telescope is equipped with, detection light injects photodetector after refracting telescope reflects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721016507.1U CN207198023U (en) | 2017-08-15 | 2017-08-15 | Single-ended reflective laser analyzer in situ |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721016507.1U CN207198023U (en) | 2017-08-15 | 2017-08-15 | Single-ended reflective laser analyzer in situ |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207198023U true CN207198023U (en) | 2018-04-06 |
Family
ID=61797096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721016507.1U Expired - Fee Related CN207198023U (en) | 2017-08-15 | 2017-08-15 | Single-ended reflective laser analyzer in situ |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207198023U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107328715A (en) * | 2017-08-15 | 2017-11-07 | 杭州泽天科技有限公司 | Single-ended reflective laser analyzer and its scaling method in situ |
| CN108507950A (en) * | 2018-04-09 | 2018-09-07 | 杭州春来科技有限公司 | A kind of open path test side regulating device |
| CN110514607A (en) * | 2019-08-16 | 2019-11-29 | 上海化工研究院有限公司 | A kind of gas detection apparatus |
| CN110887805A (en) * | 2019-11-20 | 2020-03-17 | 上海化工研究院有限公司 | Regional anomalous gas detection device of multiple spot sight |
-
2017
- 2017-08-15 CN CN201721016507.1U patent/CN207198023U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107328715A (en) * | 2017-08-15 | 2017-11-07 | 杭州泽天科技有限公司 | Single-ended reflective laser analyzer and its scaling method in situ |
| CN108507950A (en) * | 2018-04-09 | 2018-09-07 | 杭州春来科技有限公司 | A kind of open path test side regulating device |
| CN110514607A (en) * | 2019-08-16 | 2019-11-29 | 上海化工研究院有限公司 | A kind of gas detection apparatus |
| CN110887805A (en) * | 2019-11-20 | 2020-03-17 | 上海化工研究院有限公司 | Regional anomalous gas detection device of multiple spot sight |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180406 |