CN105158187A - On-line monitoring type gas chamber of absorbent-type optical fiber gas sensor - Google Patents
On-line monitoring type gas chamber of absorbent-type optical fiber gas sensor Download PDFInfo
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- CN105158187A CN105158187A CN201510702049.6A CN201510702049A CN105158187A CN 105158187 A CN105158187 A CN 105158187A CN 201510702049 A CN201510702049 A CN 201510702049A CN 105158187 A CN105158187 A CN 105158187A
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Abstract
The invention discloses an on-line monitoring type gas chamber of an absorbent-type optical fiber gas sensor. The on-line monitoring type gas chamber is divided into a signal connection area and a gas exposure area. The signal connection area is located outside the environment to be monitored and is provided with a laser alignment device, an aviation plug and a fast-mounting chuck. The gas exposure area is located in the environment to be monitored and is designed to be cylindrical and hollow, and a rectangular hole is formed in the outer wall to ensure that incident laser is fully exposed to the environment to be monitored. A photoelectric detector and a sensor chip are arranged in the gas exposure area, the photoelectric detector is located at the tail portion of the gas chamber, the sensor chip is located on the outer wall of the air chamber, and the photoelectric detector and the sensor chip are connected with the aviation plug through electric wires to complete power supply of elements and measurement signal output. The fast-mounting structure is adopted, the air chamber is directly arranged in the environment to be monitored to perform on-line monitoring, a recycle circuit between the environment to be monitored and the air chamber and errors brought by the recycle circuit are avoided, and the air chamber can achieve measurement of multiple parameters through the arranged sensor chip.
Description
Technical field
The invention belongs to spectral absorption gas detection technology field, be specifically related to a kind of on-line monitoring formula absorption-type fiber gas sensor air chamber.
Background technology
Absorption-type Fibre Optical Sensor is based on spectral absorption gas detection technology, often kind of gas molecule has oneself absorption spectra feature, the emission spectrum of light source only just produces absorption in the part overlapping with gas absorption spectrum, light intensity after absorption will change, and sensor detects gas concentration by the change detecting gas transmitted light intensity or reflective light intensity.Therefore, such gas sensor forms primarily of light source, air chamber and reception and processing unit three parts, light source is for launching the laser near gas characteristic absorption line wavelength, and air chamber is used for by laser exposure in gas to be measured, receives the reception and the aftertreatment that are used for light signal with processing unit.Absorption-type Fibre Optical Sensor have fast response time, highly sensitive, can the advantages such as trace detection be realized, be applied to the detection of the multiple gases concentration such as water vapor, methane, carbon monoxide, carbon dioxide, sulfuretted hydrogen.
Air chamber, as the important component part of absorption-type Fibre Optical Sensor, has important impact to the precision of sensor, reliability, serviceable life.Conventional air chamber, the long light path air chamber being particularly useful for trace detection is all be placed in environmental externality to be measured usually, by recycle circuit, gas to be measured is passed into air chamber and monitors, and such structure is not easy to use in the industrial environment of complexity.In addition, existing absorption-type Fibre Optical Sensor majority can only complete the monitoring of pure gas concentration, and in practice, the normal condition such as temperature, humidity, pressure of environment to be measured is also the condition that gas needs monitoring, and have important impact to gas to be measured, and these parameters often need other equipment to go monitoring.
Summary of the invention
The object of the invention is to the weak point overcoming existing absorption-type Fibre Optical Sensor and air chamber thereof, a kind of on-line monitoring formula absorption-type fiber gas sensor air chamber is provided, this air chamber adopts the structure of on-line monitoring mode and ready-package, can directly be placed in environment to be measured, realize the multi-parameter monitoring of the complex working conditions such as corrosive conditions.
For achieving the above object, technical scheme of the present invention is: a kind of on-line monitoring formula absorption-type fiber gas sensor air chamber, and described air chamber is divided into signal bonding pad and gas exposed region; Described signal bonding pad is outside environment to be measured, in the barrel of signal bonding pad, laser aligner is set, signal bonding pad barrel port arranges air plug, barrel periphery, signal bonding pad arranges fast-assembling chuck, incident laser is carried out collimation and processes and import gas exposed region into by laser aligner, and monitor signal spreads out of from air chamber by air plug; Described gas exposed region is in environment to be measured, employing cylindrical, hollow designs, gas exposed region outer wall is provided with slot, in gas exposed region afterbody barrel, photodetector is set, light signal after absorbing is converted into electric signal by photodetector, and sensor chip is installed on gas exposed region outer wall, is used for measuring other parameters of environment to be measured, photodetector is connected air plug with sensor chip by electric wire, completes the power supply of element and the output of measuring-signal.
Further, described laser aligner is arranged in collimating apparatus fixator, and uses flange screw.Air plug is fixed in the groove on flange.
Further, described fast-assembling chuck carries out Fast Installation and dismounting by clip and the supporting fast-assembling chuck being arranged on environment outer wall to be measured; Be provided with pad between chuck, ensure the leakproofness that chuck connects.
Further, described photodetector is arranged on receiver fixator, and makes the center of photodetector and the central coaxial of laser aligner, to guarantee that photodetector can receive the light signal after being actually taken up by gas.Receiver fixator is fixed by compacting part, and compacting part and gas chamber sidewall adopt taper thread to be connected, with ensure environmental gas to be measured can not and photodetector contact.
Further, in described gas exposed region, the cross-section location being positioned at two oblong aperture arranges sapphire glass, O type circle is set between sapphire glass and gas exposed region inwall, gas contact region and other regions can be completely cut off like this, to ensure that incident light can be exposed in environment to be measured by sapphire glass, and the plenum interior such as laser aligner, photodetector parts cannot touch environmental gas to be measured, thus improve corrosion resistance and the serviceable life of air chamber.
Further, described sensor chip is arranged in the groove of gas chamber outer wall, can select the dissimilar measurement of miniature digital sensor chip realization to environment temperature to be measured, humidity, pressure and other parameters.
The present invention has following beneficial effect:
The present invention adopts the structure of on-line monitoring mode and ready-package, the gas exposed region of air chamber is directly placed in environment to be measured, the error avoiding the recycle circuit between environment to be measured and air chamber and bring, achieves the on-line monitoring of gas to be measured, easy to operate, accuracy is high.
The present invention only has the gas chamber outer wall of gas exposed region and stainless steel and environmental exposure to be measured, plenum interior parts are not contacted with gas to be measured by sealing means such as O type circle, taper threads, this air chamber can be used under the complex working conditions such as corrosive conditions, improve serviceable life and the reliability of air chamber.
The present invention is provided with Miniature Sensor chip, while utilizing a certain gas concentration of spectral absorption commercial measurement, can also complete the monitoring of the conventional parameters such as environment temperature to be measured, humidity, pressure, make air chamber achieve the function of measuring multiple parameters.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present invention;
Fig. 2 is three-dimensional shape schematic diagram of the present invention.
Wherein: 1 signal bonding pad, 2 gas exposed regions, 3 laser aligners, 4 air plugs, 5 fast-assembling chucks, 6 slots, 7 photodetectors, 8 sensor chips, 9 collimating apparatus fixators, 10 flanges, 11 clips, 12 pads, 13 receiver fixators, 14 compacting parts, 15 sapphire glass, 16O type circle.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described, the restriction not to its protection domain.
As depicted in figs. 1 and 2, a kind of on-line monitoring formula absorption-type fiber gas sensor air chamber, described air chamber adopts structure and the stainless material of S31603 of ready-package, is divided into signal bonding pad 1 and gas exposed region 2.Described signal bonding pad 1 is outside environment to be measured, laser aligner 3, air plug 4 and fast-assembling chuck 5 are set, laser aligner 3 is 355110 series of products of LightPath company, be that the incident laser of 1370nm carries out collimation and processes and import gas exposed region 2 into by centre wavelength, air plug 4 selects small-sized 6 pin air plugs, external diameter 10cm, spreads out of monitor signal from air chamber.Described gas exposed region 2 is in environment to be measured, employing cylindrical, hollow designs, outer wall is provided with two slots 6, ensure that incident laser is fully exposed in environment to be measured, gas exposed region arranges photodetector 7 and sensor chip 8, InGaAs photodiode selected by photodetector 7, response wave length scope is 1100nm-2500nm, wider long wavelength near infrared spectrometry can be adapted to, light-sensitive surface diameter is 0.5mm, can effectively detect comparatively large spot, photodetector 7 is positioned at air chamber afterbody, light signal after absorbing is converted into electric signal, sensor chip 8 selects ADT7420 high accuracy number temperature sensor, precision is ± 0.25 DEG C, be positioned at gas chamber outer wall, be used for measuring the temperature of environment to be measured, photodetector 7 is connected air plug 4 with sensor chip 8 by electric wire, complete the power supply of element and the output of measuring-signal.
In the present embodiment, described laser aligner 3 is arranged in columniform collimating apparatus fixator 9, and compresses with flange 10, and flange and air chamber end adopt 3 M5 screws to be connected, and air plug is fixed in the groove on flange 10.
In the present embodiment, described fast-assembling chuck 5 external diameter is 51cm, carries out Fast Installation and dismounting by clip 11 and the supporting fast-assembling chuck being arranged on environment outer wall to be measured; Be provided with silica gel pad 12 between chuck, ensure the leakproofness that chuck connects.
In the present embodiment, described photodetector 7 is arranged on receiver fixator 13, and makes the center of photodetector 7 and the central coaxial of laser aligner 3, to guarantee that photodetector can receive the light signal after being actually taken up by gas.Receiver fixator is fixed by compacting part 14, and compacting part 14 and gas chamber sidewall adopt taper thread to be connected, to ensure that environmental gas to be measured can not contact with photodetector 7.
In the present embodiment, in described gas exposed region 2, the cross-section location being positioned at two oblong aperture arranges sapphire glass 15, O type circle 16 is set between sapphire glass and gas exposed region inwall, gas contact region and other regions can be completely cut off like this, to ensure that incident light can be exposed in environment to be measured by sapphire glass 15, and the plenum interior parts such as laser aligner 3, photodetector 7 cannot touch environmental gas to be measured, thus improve corrosion resistance and the serviceable life of air chamber.
In the present embodiment, described sensor chip 8 is arranged in the groove of gas chamber outer wall, and has carried out corrosion resistant encapsulation process to chip, and the ADT7420 high accuracy number temperature sensor chip selected can realize the temperature monitoring of environment to be measured.
In the present embodiment, described on-line monitoring formula absorption-type fiber gas sensor air chamber is applied to a kind of absorption-type Fibre Optical Sensor measuring sterile environment humiture.This sensor utilize the absorption peak of water vapor near 1370nm wavelength carry out disinfection environment vapor content monitoring, air chamber described in sensor utilizes completes vapor content and the temperature monitoring of sterile environment, and by receiving the relative humidity calculating sterile environment with disposal system, finally complete the monitoring of sterile environment temperature and relative humidity two parameters.Because sterile environment needs to use the sanitizer such as Chlorine Dioxide Gas, hydrogen peroxide, this kind of sanitizer has stronger corrosivity under high humidity environment.Therefore, described air chamber can meet the demand of sensors with auxiliary electrode on-line monitoring, multiparameter, again can Long-Time Service in a corrosive environment, has applied range, easy to use, reliability is high, can complete the advantages such as measuring multiple parameters.
Finally should understand, above embodiment is only not used in for illustration of the present invention and limits the scope of the invention, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, technical scheme of the present invention is modified or equivalent replacement, and do not depart from the spirit and scope of technical solution of the present invention, all should be encompassed in the middle of right of the present invention.
Claims (6)
1. an on-line monitoring formula absorption-type fiber gas sensor air chamber, is characterized in that, described air chamber is divided into signal bonding pad (1) and gas exposed region (2); Described signal bonding pad (1) is outside environment to be measured, laser aligner (3) is set in the barrel of signal bonding pad, signal bonding pad barrel port arranges air plug (4), barrel periphery, signal bonding pad arranges fast-assembling chuck (5), incident laser is carried out collimation and processes and import gas exposed region (2) into by laser aligner (3), and monitor signal spreads out of from air chamber by air plug (4); Described gas exposed region (2) is in environment to be measured, employing cylindrical, hollow designs, gas exposed region outer wall is provided with slot (6), in gas exposed region afterbody barrel, photodetector (7) is set, light signal after absorption is converted into electric signal by photodetector, sensor chip (8) is installed on gas exposed region outer wall, be used for measuring other parameters of environment to be measured, photodetector (7) is connected air plug (4) with sensor chip (8) by electric wire, completes the power supply of element and the output of measuring-signal.
2. a kind of on-line monitoring formula absorption-type fiber gas sensor air chamber according to claim 1, it is characterized in that: described laser aligner (3) is arranged in collimating apparatus fixator (9), and compress with flange (10); Air plug is fixed in the groove on flange (10).
3. a kind of on-line monitoring formula absorption-type fiber gas sensor air chamber according to claim 1, is characterized in that: described fast-assembling chuck (5) carries out Fast Installation and dismounting by clip (11) and the supporting fast-assembling chuck that is arranged on environment outer wall to be measured; Be provided with pad (12) between chuck, ensure the leakproofness that chuck connects.
4. a kind of on-line monitoring formula absorption-type fiber gas sensor air chamber according to claim 1, it is characterized in that: described photodetector (7) is arranged on receiver fixator (13), and make the center of photodetector (7) and the central coaxial of laser aligner (3), receiver fixator is fixed by compacting part (14), and compacting part (14) adopts taper thread to be connected with the inwall of gas exposed region.
5. a kind of on-line monitoring formula absorption-type fiber gas sensor air chamber according to claim 1, it is characterized in that: in described gas exposed region (2), the cross-section location being positioned at two oblong aperture arranges sapphire glass (15), O type circle (16) is set between sapphire glass and gas exposed region inwall, to ensure that incident light can be exposed in environment to be measured by sapphire glass (15).
6. a kind of on-line monitoring formula absorption-type fiber gas sensor air chamber according to claim 1, it is characterized in that: described sensor chip (8) is arranged in the groove of gas chamber outer wall, select the measurement of miniature digital sensor chip realization to environment temperature to be measured, humidity, pressure parameter.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105699294A (en) * | 2016-02-29 | 2016-06-22 | 中国工程物理研究院材料研究所 | Micro-nano optical sensor system capable of achieving concentration measurement of various gases |
| CN106596466A (en) * | 2016-12-12 | 2017-04-26 | 北京航天易联科技发展有限公司 | Optical fiber sensor humidity measurement calibration device and optical fiber sensor humidity measurement calibration method |
| CN108181265A (en) * | 2017-12-14 | 2018-06-19 | 北京航天易联科技发展有限公司 | A kind of binary channels low concentration aqueous vapor high precision measuring device and method |
| CN109596523A (en) * | 2018-12-19 | 2019-04-09 | 北京航天易联科技发展有限公司 | A kind of hot and humid environment steam on-line measuring device |
| CN109724928A (en) * | 2018-12-26 | 2019-05-07 | 中煤科工集团重庆研究院有限公司 | Self-calibrating reference gas cell |
| CN110031405A (en) * | 2019-03-06 | 2019-07-19 | 北京航天易联科技发展有限公司 | Non-fiber, light path adjustable laser pipeline gas sensor in a kind of detection bar |
| CN110361329A (en) * | 2019-07-29 | 2019-10-22 | 云南电网有限责任公司昭通供电局 | A kind of detection system for the SF6 decomposition product that can improve detection accuracy |
| CN111879727A (en) * | 2020-06-22 | 2020-11-03 | 中国科学院合肥物质科学研究院 | Receiving and transmitting same-side light path structure, device and application of multiband detection for gas monitoring |
| CN113820287A (en) * | 2021-10-14 | 2021-12-21 | 中煤科工集团重庆研究院有限公司 | In-situ direct measurement type pipeline gas spectrum absorption concentration detection probe and detector |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6635224B1 (en) * | 1998-10-30 | 2003-10-21 | General Electric Company | Online monitor for polymer processes |
| CN101563595A (en) * | 2006-12-12 | 2009-10-21 | 皇家飞利浦电子股份有限公司 | Sample concentration detector with temperature compensation |
| CN102830079A (en) * | 2011-06-15 | 2012-12-19 | 朗松珂利(上海)仪器仪表有限公司 | Micro-water content fiber laser detector based on secondary modulation and data stitching technology |
| CN104198393A (en) * | 2014-04-29 | 2014-12-10 | 贵州电力试验研究院 | On-line monitoring system and method for SF6 decomposition gas components in electrical equipment |
| CN205049474U (en) * | 2015-10-26 | 2016-02-24 | 中国人民解放军军事医学科学院卫生装备研究所 | On -line monitoring formula absorption -type optic fibre gas sensor air chamber |
-
2015
- 2015-10-26 CN CN201510702049.6A patent/CN105158187A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6635224B1 (en) * | 1998-10-30 | 2003-10-21 | General Electric Company | Online monitor for polymer processes |
| CN101563595A (en) * | 2006-12-12 | 2009-10-21 | 皇家飞利浦电子股份有限公司 | Sample concentration detector with temperature compensation |
| CN102830079A (en) * | 2011-06-15 | 2012-12-19 | 朗松珂利(上海)仪器仪表有限公司 | Micro-water content fiber laser detector based on secondary modulation and data stitching technology |
| CN104198393A (en) * | 2014-04-29 | 2014-12-10 | 贵州电力试验研究院 | On-line monitoring system and method for SF6 decomposition gas components in electrical equipment |
| CN205049474U (en) * | 2015-10-26 | 2016-02-24 | 中国人民解放军军事医学科学院卫生装备研究所 | On -line monitoring formula absorption -type optic fibre gas sensor air chamber |
Non-Patent Citations (1)
| Title |
|---|
| 龚益民 等: "红外光谱吸收式SF6浓度传感器的温湿度误差及补偿", 《电子测试》 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105699294A (en) * | 2016-02-29 | 2016-06-22 | 中国工程物理研究院材料研究所 | Micro-nano optical sensor system capable of achieving concentration measurement of various gases |
| CN105699294B (en) * | 2016-02-29 | 2018-11-02 | 中国工程物理研究院材料研究所 | A kind of micronano optical sensing system of achievable multiple gases measurement of concetration |
| CN106596466A (en) * | 2016-12-12 | 2017-04-26 | 北京航天易联科技发展有限公司 | Optical fiber sensor humidity measurement calibration device and optical fiber sensor humidity measurement calibration method |
| CN106596466B (en) * | 2016-12-12 | 2019-01-08 | 北京航天易联科技发展有限公司 | A kind of fibre optical sensor moisture measurement caliberating device and method |
| CN108181265A (en) * | 2017-12-14 | 2018-06-19 | 北京航天易联科技发展有限公司 | A kind of binary channels low concentration aqueous vapor high precision measuring device and method |
| CN109596523A (en) * | 2018-12-19 | 2019-04-09 | 北京航天易联科技发展有限公司 | A kind of hot and humid environment steam on-line measuring device |
| CN109724928A (en) * | 2018-12-26 | 2019-05-07 | 中煤科工集团重庆研究院有限公司 | Self-calibrating reference gas cell |
| CN110031405A (en) * | 2019-03-06 | 2019-07-19 | 北京航天易联科技发展有限公司 | Non-fiber, light path adjustable laser pipeline gas sensor in a kind of detection bar |
| CN110361329A (en) * | 2019-07-29 | 2019-10-22 | 云南电网有限责任公司昭通供电局 | A kind of detection system for the SF6 decomposition product that can improve detection accuracy |
| CN111879727A (en) * | 2020-06-22 | 2020-11-03 | 中国科学院合肥物质科学研究院 | Receiving and transmitting same-side light path structure, device and application of multiband detection for gas monitoring |
| CN113820287A (en) * | 2021-10-14 | 2021-12-21 | 中煤科工集团重庆研究院有限公司 | In-situ direct measurement type pipeline gas spectrum absorption concentration detection probe and detector |
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Application publication date: 20151216 |