CN203732440U - Probe device for measuring laser gas concentration - Google Patents
Probe device for measuring laser gas concentration Download PDFInfo
- Publication number
- CN203732440U CN203732440U CN201320871330.9U CN201320871330U CN203732440U CN 203732440 U CN203732440 U CN 203732440U CN 201320871330 U CN201320871330 U CN 201320871330U CN 203732440 U CN203732440 U CN 203732440U
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- CN
- China
- Prior art keywords
- optical fiber
- light path
- gas concentration
- fiber head
- dustproof
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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.)
- Expired - Fee Related
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Abstract
The utility model relates to a probe device for measuring laser gas concentration. The probe device comprises a gas reflecting light path unit (1), a gas pool external structure unit (2), and a protective and mechanical fixing unit (3), wherein the gas pool external structure unit comprises a dustproof outer barrel, a dustproof net, dustproof cotton and an upper cover of the dustproof outer barrel; the gas reflecting light path unit comprises a collimator bracket, a reflector holder, a stainless steel rod, an optical fiber collimator fixing cap, a lens, a stainless steel pipe sleeve, an O-shaped ring, a top ring, an optical fiber head and a sealing rubber ring; the protective and mechanical fixing unit comprises a transmitter housing. Compared with the prior art, particulate matters such as dust can be effectively prevented from entering a laser device and a reflecting lens, meanwhile, the transmitter can play a good protection role on the optical fiber; in addition, the probe device is more convenient to install by the mechanical fixing unit, is applicable to online gas concentration measurement on the spot, and is high in measurement result reliability.
Description
Technical field
The utility model relates to technical field of laser detection, and particularly a kind of probe apparatus of laser gas concentration measurement equipment is specifically related to a kind of reflected light path formula laser gas concentration measurement probe.
Background technology
Tunable diode laser absorption spectroscopy (tunable diode laser absorption spectroscopy, TDLAS) technology is utilized the single molecular absorption line of semiconductor laser with tunable narrow linewidth and tunable wave length Characteristics Detection gas, it combines with wavelength-modulated (WMS) technology and second-harmonic detection technology, it is a kind of high sensitivity, high selectivity, high reliability, online fast, be subject to environmental interference factor less, the gas detection technology of non-cpntact measurement, in petrochemical complex, environmental monitoring, metallurgical, coal, in the fields such as gas ductwork, be widely applied.
Optical fiber sensing technology has anti-electromagnetic interference (EMI), burn-proof and explosion prevention, the advantage such as remote controlled.Because fiber transmission attenuation is very little, gas sensor and detect distance between main frame and can be separated by tens even tens kilometers, can realize the on-line measurement of long distance, multiple spot.Due to sensing and transmission be all light signal, not electrical connection in sensing network, detection signal is not subject to electromagnetic interference (EMI), long transmission distance, wide coverage.
" petrochemical enterprise inflammable gas and toxic gas detection alarm design specification " regulation, effective covering horizontal plane radius of detector, indoor is 7.5 meters, outdoor is 15 meters.In area of effective coverage, at least one detecting device should be set.In addition, near the position input and output material valve group of storage tank and may exist valve group etc. between the pump room, compressor plant, filling bottle of gas leakage that gas detecting instrument should be set respectively.At field of Environment Protection, according to the regulation of " ambient air quality detection specification ", the magnitude setting of National Environmental Air Quality Evaluation point should be established 1 monitoring station by every 25-30km2 built-up areas area, and is no less than 8 points.Taking rock gas or methane gas as example, their principal ingredient is methane, has inflammable and explosive property, in digging, transport and use procedure, very easily blasts, and its concentration of Real-Time Monitoring is extremely important.Be dispersed in the occasion in region in a big way in detection targets such as oil gas storage tank district, source of the gas factories, and in the transmission of long distance oil-gas pipe network, want economical, quickly and reliably the leakage of oil gas monitored, to reduce the loss to greatest extent and pollution to environment, ensure the safe operation of oil-gas pipeline.
For places such as coal-mine gas, natural gas line, chemical plant, existing gas measuring apparatus major part is all spot measurement.The principal feature of above-mentioned application is that the scope of safety monitoring is large, distance, and monitoring place disperses, and requires monitoring accuracy high, fast and reliable.The utility model discloses the probe apparatus of the multiple spot gas parameter real-time monitoring system that can meet above-mentioned requirements.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art and a kind of reflected light path formula laser gas concentration measurement probe that provides.Take into full account the severe complex environment being present under coal mine, for the high precision Real-Time Monitoring of realizing gas provides necessary condition.
The purpose of this utility model is achieved in that a kind of laser gas concentration measurement probe apparatus, mainly comprise gas reflected light path unit, external structure unit, gas pond and protection and mechanical fixed cell, it is characterized in that: described gas reflected light path unit includes the stationary installation of optical fiber head, comprise stainless steel sleeve pipe, optical fiber collimator locking cap, O type circle, collar, collimating apparatus support, jackscrew, and light path part, comprise optical fiber head (having two), reflecting optics, catoptron holder, stainless steel bar; Described external structure unit, gas pond comprises, dustproof urceolus, dust proof tube upper cover, spring steel plate with holes, Air Filter and dustproof cotton; Described protection and mechanical fixed cell comprise transmitter upper cover, transmitter shell.
Described light path gas detection architecture be Emission Lasers through after one of them of optical fiber head after reflecting optics reflection again by second reception of optical fiber head.
The reflecting optics of reflective light path adopts gold-plated eyeglass.
Light path angle be optical fiber head direction can certain limit in manual shift, each optical fiber head all uses the jackscrew of three directions to be fixed, the amplitude of accommodation is large, uses flexibly.
Integrated model is compact to design, safe.Housing adopts blast resistance construction, not only safe but also can play a very good protection to light path.
Probe light path outside is designed with dustproof urceolus, dustproof upper cover, and Air Filter adds dustproof cotton.
Collimating apparatus support Design is ingenious, and compact conformation can be realized again adjustable function flexibly.
Structural design has fully taken into account problem easy for installation.Be designed with corresponding erecting tools.
Sealing structure is good, explosion-proof vibrationproof.
When system, meet GB, easy to use, such as explosion-proof casing is selected conventional size and standard, reduced easily cost simultaneously.
Be designed with close-fitting steel bushing for optical fiber head, play a protective role.Use when mounted high-performance glue to fix simultaneously.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is main pseudosection of the present utility model.
Fig. 3 is explosive view of the present utility model.
Embodiment
A kind of laser gas concentration measurement probe apparatus, mainly comprise gas reflected light path unit (1), external structure unit, gas pond (2) and protection and mechanical fixed cell (3), it is characterized in that: described gas reflected light path unit (1) includes optical fiber head (5) (having two), it is received that one of them Emission Lasers reflexes to another optical fiber head (5) through reflecting optics (11); Optical fiber head is fixed by optical fiber collimator, optical fiber collimator and stationary installation thereof comprise stainless steel sleeve pipe (4), optical fiber collimator locking cap (6), O type circle (8), collar (9), collimating apparatus support (19), jackscrew (20), wherein jackscrew (20) is used for regulating optical fiber head (5) to transmit and receive the aligning of laser; Described reflecting optics (11) is fixed by catoptron holder (13), has stainless steel bar (16) as supporting in described light path; Described external structure unit, gas pond (2) comprises, dustproof urceolus (10), dust proof tube upper cover (12), spring steel plate with holes (14), Air Filter and dustproof cotton (15); Described protection and mechanical fixed cell (3) comprise transmitter shell (18), and there is transmitter upper cover (17) top.
Described reflective light path be Emission Lasers through after one of them of optical fiber head (5) after reflecting optics (11) reflection after reflecting optics (11) reflection again by second reception of optical fiber head (5), and reflecting optics (11) adopts gold-plated eyeglass.Wherein light path angle be optical fiber head direction can certain limit in manual shift, each optical fiber head (5) all uses the jackscrew (20) of three directions to be fixed, the amplitude of accommodation is large, uses flexibly.
Described probe light path outside is designed with dustproof urceolus (10), dustproof upper cover (12), and Air Filter and dustproof cotton (15), fully prevent that dust and other impurities from entering light path and affecting accuracy of detection.The housing (18) of described transmitter adopts blast resistance construction; not only safe but also can play a very good protection to optical fiber; and the portion structure that the gentle pond of transmitter shell joins design has fully taken into account problem easy for installation, and is designed with corresponding erecting tools as spanner (7).
Claims (7)
1. a laser gas concentration measurement probe apparatus, mainly comprise gas reflected light path unit (1), external structure unit, gas pond (2) and protection and mechanical fixed cell (3), it is characterized in that: described gas reflected light path unit (1) includes optical fiber head (5), it is received that one of them Emission Lasers reflexes to another optical fiber head (5) through reflecting optics (11); Optical fiber head is fixed by optical fiber collimator, optical fiber collimator and stationary installation thereof comprise stainless steel sleeve pipe (4), optical fiber collimator locking cap (6), O type circle (8), collar (9), collimating apparatus support (19), jackscrew (20), wherein jackscrew (20) is used for regulating optical fiber head (5) to transmit and receive the aligning of laser; Described reflecting optics (11) is fixed by catoptron holder (13), has stainless steel bar (16) as supporting in described light path; Described external structure unit, gas pond (2) comprises, dustproof urceolus (10), dust proof tube upper cover (12), spring steel plate with holes (14), Air Filter and dustproof cotton (15); Described protection and mechanical fixed cell (3) comprise transmitter shell (18), and there is transmitter upper cover (17) top.
2. a kind of laser gas concentration measurement probe apparatus according to claim 1, is characterized in that: described light path gas detection architecture be Emission Lasers through after one of them of optical fiber head (5) after reflecting optics (11) reflection again by second reception of optical fiber head (5).
3. a kind of laser gas concentration measurement probe apparatus according to claim 1, is characterized in that: the reflecting optics (11) of reflective light path adopts gold-plated eyeglass.
4. a kind of laser gas concentration measurement probe apparatus according to claim 1, is characterized in that: light path angle is that optical fiber head direction can manual shift, and each optical fiber head (5) all uses the jackscrew (20) of three directions to be fixed.
5. a kind of laser gas concentration measurement probe apparatus according to claim 1, is characterized in that: housing (18) adopts blast resistance construction, not only safe but also can play a very good protection to optical fiber.
6. a kind of laser gas concentration measurement probe apparatus according to claim 1, is characterized in that: probe light path outside is designed with dustproof urceolus (10), dustproof upper cover (12), Air Filter and dustproof cotton (15).
7. a kind of laser gas concentration measurement probe apparatus according to claim 1, is characterized in that: be designed with close-fitting stainless steel sleeve pipe (4) for optical fiber head, play a protective role, use when mounted glue to fix simultaneously.
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320871330.9U CN203732440U (en) | 2013-12-27 | 2013-12-27 | Probe device for measuring laser gas concentration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320871330.9U CN203732440U (en) | 2013-12-27 | 2013-12-27 | Probe device for measuring laser gas concentration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203732440U true CN203732440U (en) | 2014-07-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320871330.9U Expired - Fee Related CN203732440U (en) | 2013-12-27 | 2013-12-27 | Probe device for measuring laser gas concentration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203732440U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105445223A (en) * | 2015-11-09 | 2016-03-30 | 北京航天易联科技发展有限公司 | Humidity detection device for measuring high-temperature flue gas |
| CN113588508A (en) * | 2021-07-30 | 2021-11-02 | 中国科学技术大学 | Threaded connection type optical fiber aerosol concentration measurement probe and concentration measurement device |
-
2013
- 2013-12-27 CN CN201320871330.9U patent/CN203732440U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105445223A (en) * | 2015-11-09 | 2016-03-30 | 北京航天易联科技发展有限公司 | Humidity detection device for measuring high-temperature flue gas |
| CN105445223B (en) * | 2015-11-09 | 2019-07-05 | 北京航天易联科技发展有限公司 | Humidity detector for high-temperature flue gas measurement |
| CN113588508A (en) * | 2021-07-30 | 2021-11-02 | 中国科学技术大学 | Threaded connection type optical fiber aerosol concentration measurement probe and concentration measurement device |
| CN113588508B (en) * | 2021-07-30 | 2023-03-10 | 中国科学技术大学 | Threaded connection type optical fiber aerosol concentration measurement probe and concentration measurement device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Probe device for measuring laser gas concentration Effective date of registration: 20160414 Granted publication date: 20140723 Pledgee: Beijing technology intellectual property financing Company limited by guarantee Pledgor: BEIJING HANGXING NETWORKING CO.,LTD. Registration number: 2016990000295 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20180601 Granted publication date: 20140723 Pledgee: Beijing technology intellectual property financing Company limited by guarantee Pledgor: BEIJING HANGXING NETWORKING CO.,LTD. Registration number: 2016990000295 |
|
| 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: 20140723 Termination date: 20211227 |