CN2506985Y - Optical fiber raster flow sensor - Google Patents
Optical fiber raster flow sensor Download PDFInfo
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- CN2506985Y CN2506985Y CN 01265842 CN01265842U CN2506985Y CN 2506985 Y CN2506985 Y CN 2506985Y CN 01265842 CN01265842 CN 01265842 CN 01265842 U CN01265842 U CN 01265842U CN 2506985 Y CN2506985 Y CN 2506985Y
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- fiber grating
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Abstract
An optical fiber raster flow sensor is provided with an optical fiber fixation frame in a shell body, and an optical fiber raster probe head is arranged on the optical fiber fixation frame and is connected with a signal processor through an optical fiber, and the shell body has an optical fiber raster probe head positioning framework. The utility model has the advantages of high measuring precision, wide dynamic range, good linear relationship, good reliability, strong anti electromagnetism disturbance, and no influence from solution transmittance, and can be used as an ordinary flow sensor, a flow sensor for inflammable and explosive liquid, and a flow sensor for strong erosive liquid.
Description
The utility model belongs to the field of measuring technique of volume, flow, mass rate or liquid level, is specifically related to the continuous fluid of instrument or the flow or the mass rate of flowing solid material passed through by survey frequency, phase shift, electromagnetic wave or other wave propagation time.
Flow is a controlled variable commonly used in the commercial production, needs to measure flow in many cases.Also there are many local needs to measure flow in daily life, as the flow measurement of domestic water, the flow measurement of refuelling station's oil transportation amount.
Widely used a few days ago flowmeter is a turbo flow meter, the sensor of turbo flow meter is a turbine sensor, adopt the kind of drive of machinery, turbine rotation when fluid passes through turbine, go out the flow of fluid by the revolution dehorn of turbine rotation, its measuring accuracy is lower, and the measuring error when minimum flow and maximum flow is bigger.Shortcomings such as the another kind of sensor of flowmeter is differential sensor, and fluid changes the flow that the number dehorn goes out fluid by the pressure of different cross section pipeline, exists measuring accuracy lower equally, and the measuring error when minimum flow and maximum flow is bigger.
The purpose of this utility model is to overcome the shortcoming of above-mentioned flow sensor, provides a kind of measuring accuracy height, dynamic range is big, linear relationship good, good reliability, anti-electromagnetic interference (EMI) by force, are not subjected to the solution transmissivity to influence, can be used for the fiber grating flow sensor of flammable and combustible liquids and deep-etching liquid.
For achieving the above object, the solution that the utility model adopts is: be provided with the optical fiber fixed frame in housing, the optical fiber fixed frame is provided with the fiber grating probe, and this fiber grating probe links to each other with signal processor by optical fiber, is provided with fiber grating probe detent mechanism on housing.
Fiber grating of the present utility model probe is: the tablet that is located at the optical fiber fixed frame is provided with fiber grating, and optical fiber one end and fiber grating is connected as a single entity, another termination signal processor scribbles the black light screening material on the other end of fiber grating.Signal processor of the present utility model is: fiber coupler is connected with wide spectrum light source and plain edge edge wave filter with the fiber grating probe by optical fiber, and is arranged on the photoelectric commutator on the plain edge edge wave filter optical axis direction.
Tablet of the present utility model is an elastic sheet metal, and its thickness is 0.1～0.3mm.
Elastic sheet metal of the present utility model is to make with Titanium steel metal material.
Detent mechanism of the present utility model is: be arranged on the stop block of optical fiber fixed frame side on the housing and the blind nut on the stop block.
The utility model is compared with differential sensor with turbine sensor, has the measuring accuracy height, dynamic range is big, linear relationship good, good reliability, anti-electromagnetic interference (EMI) by force, are not subjected to advantages such as the solution transmissivity influences.The flow sensor that can be used as general liquid also can be used as the flow sensor of flammable and combustible liquids, also can be used as the flow sensor of deep-etching liquid.
Fig. 1 is the structural representation of an embodiment of the utility model.
Fig. 2 is the fibre-optical probe structural representation of Fig. 1.
Below in conjunction with drawings and Examples the utility model is further described, but the utility model is not limited to these embodiment.
In Fig. 1,2, optical fiber fixed frame 9, fibre-optical probe 10 are installed in housing 1, fibre-optical probe 10 usefulness screw threads for fastening connectors are fixedly mounted on the optical fiber fixed frame 9, the fibre-optical probe 10 of present embodiment is to be connected by elastic sheet metal 10-1, fiber grating 10-2, black black-out paint 10-3 to constitute, and the elastic sheet metal 10-1 of present embodiment makes with Titanium steel metal material.Elastic sheet metal 10-1 is a rectangular sheet, also can be made into regular hexagon, or other shape, its thickness is 0.2mm, on elastic sheet metal 10-1, be carved with a groove, one end and the fiber grating 10-2 of optical fiber 4 are connected as a single entity, fiber grating 10-2 sticks with glue in the groove that is connected on the elastic sheet metal 10-1, scribble black black-out paint 10-3 on the other end of fiber grating 10-2, be used to prevent the unwanted light reflection, elastic sheet metal 10-1 is fixedly mounted on the optical fiber fixed frame 9, after optical fiber fixed frame 9 usefulness rivets or screw threads for fastening connector are fixedly mounted in the housing 1, the front-back of elastic sheet metal 10-1 housing 1 radially with the axis normal of housing 1, the other end of optical fiber 4 is connected with signal processor.Fibre-optical probe 10 is placed on when having liquid to pass through in the pipeline of liquid, elastic sheet metal 10-1 is vertical with the flow direction of liquid, under the impact force action of liquid, elastic sheet metal 10-1 is arched upward to the flow direction of liquid, 10-2 deformation takes place in fiber grating, and the parameter of fiber grating 10-2 is changed, and causes moving of reflection wavelength, by measuring moving of wavelength, can obtain flow signal.
Stop block 2 is installed on housing, stop block 2 is used for limit fibre fixed frame 9 and moves in housing 1, it is vertical with the flow direction of liquid that elastic sheet metal 10-1 is remained, above housing 1 up-stop 2 blind nut 3 is installed, stop block 2 and blind nut 3 are a pop one's head in embodiment of 10 detent mechanisms of fiber grating.
Be set with the protective jacket of making of stainless steel wire 11 in the outside of optical fiber 4, between optical fiber 4 and protective jacket 11, anti-vibration sleeve 12 be housed.
The signal processor of present embodiment is connected and composed by fiber coupler 5, wide spectrum light source 6, plain edge edge filter 7, photoelectric commutator 8.Fiber coupler 5 links to each other with wide spectrum light source 6 and plain edge edge wave filter 7 by optical fiber 4 and fiber grating probe 10, and photoelectric commutator 8 is arranged on the optical axis direction of plain edge edge wave filter 7.Wide spectrum light source 6 provides wideband light source for fiber grating probe 10, fiber grating probe 10 light with wide spectrum light source 6 reflex to fiber coupler 5, fiber coupler 5 separates reflected light and incident light, make reflected light enter plain edge edge fluid strainer 7, plain edge edge wave filter 7 is converted to the energy variation of exporting light with catoptrical wavelength variations, and photoelectric commutator 8 converts plain edge edge wave filter reflection luminous energy to electric signal output.
The designer has provided second embodiment of the utility model.In the present embodiment, the thickness of elastic sheet metal 10-1 is 0.1mm.The connecting relation of other parts and parts is identical with first embodiment.
The designer has provided the 3rd embodiment of the utility model.In the present embodiment, the thickness of elastic sheet metal 10-1 is 0.3mm.The connecting relation of other parts and parts is identical with first embodiment.
Principle of work of the present utility model is as follows:
Liquid enters outside housing 1 when flowing vertically in the housing 1, under the impact force action of liquid, elastic sheet metal 10-1 is arched upward to the flow direction of liquid, deformation takes place in fiber grating 10-2, catoptrical wavelength is subjected to displacement, the light that makes wide spectrum light source 6 is through fiber coupler 5, optical fiber 4 outputs to fiber grating 10-2 back reflection, reflected light separates reflected light and incident light through fiber coupler 5, make reflected light enter plain edge edge fluid strainer 7, plain edge edge wave filter 7 is converted to the energy variation of exporting light with catoptrical wavelength variations, and photoelectric commutator 8 converts plain edge edge wave filter 7 reflection luminous energy to electric signal output.
Claims (5)
1, a kind of fiber grating flow sensor, it is characterized in that: in housing [1], be provided with optical fiber fixed frame [9], on optical fiber fixed frame [9], be provided with fiber grating probe [10], this fiber grating probe [10] links to each other with signal processor by optical fiber [4], is provided with fiber grating probe detent mechanism on housing [1].
2, according to the described fiber grating flow sensor of claim 1, it is characterized in that said fiber grating probe [10] is: the tablet that is located at optical fiber fixed frame [9] is provided with fiber grating [10-2], one end of optical fiber [4] and fiber grating [10-2] are connected as a single entity, another termination signal processor, scribble the black light screening material on the other end of fiber grating; Said signal processor is: fiber coupler [5] is connected with wide spectrum light source [6] and plain edge edge wave filter [7] with fiber grating probe [10] by optical fiber [4], and is arranged on the photoelectric commutator [8] on plain edge edge wave filter [7] optical axis direction.
3, according to the described fiber grating flow sensor of claim 2, it is characterized in that said tablet is elastic sheet metal [10-1], its thickness is 0.1～0.3mm.
4,, it is characterized in that said elastic sheet metal is to make with Titanium steel metal material according to the described fiber grating flow sensor of claim 3.
5,, it is characterized in that said detent mechanism is: be arranged on the stop block of optical fiber fixed frame side on the housing and the blind nut on the stop block according to the described fiber grating flow sensor of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01265842 CN2506985Y (en) | 2001-11-08 | 2001-11-08 | Optical fiber raster flow sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01265842 CN2506985Y (en) | 2001-11-08 | 2001-11-08 | Optical fiber raster flow sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2506985Y true CN2506985Y (en) | 2002-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01265842 Expired - Fee Related CN2506985Y (en) | 2001-11-08 | 2001-11-08 | Optical fiber raster flow sensor |
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| CN (1) | CN2506985Y (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1754133B (en) * | 2003-03-11 | 2010-09-01 | 剑桥大学技术服务有限公司 | Holographic sensors and their production |
| CN102261934A (en) * | 2011-04-07 | 2011-11-30 | 大连理工大学 | Optical fiber flow sensor based on optical self-compensation structure |
| CN102393226A (en) * | 2011-11-29 | 2012-03-28 | 中国计量学院 | Photonic crystal optical fiber liquid flowmeter based on optical fiber loop mirror |
| CN102839966A (en) * | 2012-09-17 | 2012-12-26 | 中国石油集团长城钻探工程有限公司 | Micro-differential pressure optical fiber flow sensor in high temperature environment |
| CN102937465A (en) * | 2012-11-16 | 2013-02-20 | 中国科学院半导体研究所 | Vortex street flow-meter using fiber laser |
| CN102944269A (en) * | 2012-11-16 | 2013-02-27 | 中国科学院半导体研究所 | Optical fiber laser flow meter |
| CN103376135A (en) * | 2012-04-13 | 2013-10-30 | 中国石油化工股份有限公司 | Non-contact optical fiber device and method for measuring flows |
| CN101750120B (en) * | 2008-12-05 | 2014-05-14 | 通用电气公司 | Fiber sensing system |
| CN105352558A (en) * | 2015-10-22 | 2016-02-24 | 哈尔滨工业大学 | Underground optical fiber vortex-shedding flowmeter and underground flow measuring method |
| WO2016086856A1 (en) * | 2014-12-02 | 2016-06-09 | 华南师范大学 | All-optical device and method for monitoring mass and flow rate of fluid |
| CN107179421A (en) * | 2017-06-29 | 2017-09-19 | 山东省科学院激光研究所 | Flow sensor is popped one's head in and flow velocity measuring system |
| CN110470351A (en) * | 2019-09-10 | 2019-11-19 | 贵阳学院 | A kind of gear type optic flow sensor and its flow rate testing methods |
| CN112362115A (en) * | 2020-09-09 | 2021-02-12 | 中国航空工业集团公司沈阳飞机设计研究所 | Small flow sensor based on fiber bragg grating and measuring system |
-
2001
- 2001-11-08 CN CN 01265842 patent/CN2506985Y/en not_active Expired - Fee Related
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1754133B (en) * | 2003-03-11 | 2010-09-01 | 剑桥大学技术服务有限公司 | Holographic sensors and their production |
| CN101750120B (en) * | 2008-12-05 | 2014-05-14 | 通用电气公司 | Fiber sensing system |
| CN102261934A (en) * | 2011-04-07 | 2011-11-30 | 大连理工大学 | Optical fiber flow sensor based on optical self-compensation structure |
| CN102393226A (en) * | 2011-11-29 | 2012-03-28 | 中国计量学院 | Photonic crystal optical fiber liquid flowmeter based on optical fiber loop mirror |
| CN103376135A (en) * | 2012-04-13 | 2013-10-30 | 中国石油化工股份有限公司 | Non-contact optical fiber device and method for measuring flows |
| CN102839966A (en) * | 2012-09-17 | 2012-12-26 | 中国石油集团长城钻探工程有限公司 | Micro-differential pressure optical fiber flow sensor in high temperature environment |
| CN102839966B (en) * | 2012-09-17 | 2015-07-22 | 中国石油集团长城钻探工程有限公司 | Micro-differential pressure optical fiber flow sensor in high temperature environment |
| CN102937465B (en) * | 2012-11-16 | 2015-06-17 | 中国科学院半导体研究所 | Vortex street flow-meter using fiber laser |
| CN102944269A (en) * | 2012-11-16 | 2013-02-27 | 中国科学院半导体研究所 | Optical fiber laser flow meter |
| CN102937465A (en) * | 2012-11-16 | 2013-02-20 | 中国科学院半导体研究所 | Vortex street flow-meter using fiber laser |
| CN102944269B (en) * | 2012-11-16 | 2015-07-29 | 中国科学院半导体研究所 | A kind of optical fiber laser flow meter |
| WO2016086856A1 (en) * | 2014-12-02 | 2016-06-09 | 华南师范大学 | All-optical device and method for monitoring mass and flow rate of fluid |
| CN105352558A (en) * | 2015-10-22 | 2016-02-24 | 哈尔滨工业大学 | Underground optical fiber vortex-shedding flowmeter and underground flow measuring method |
| CN105352558B (en) * | 2015-10-22 | 2019-03-29 | 哈尔滨工业大学 | A kind of downhole optic fiber vortex-shedding meter |
| CN107179421A (en) * | 2017-06-29 | 2017-09-19 | 山东省科学院激光研究所 | Flow sensor is popped one's head in and flow velocity measuring system |
| CN107179421B (en) * | 2017-06-29 | 2019-08-23 | 山东省科学院激光研究所 | Flow sensor probe and flow velocity measuring system |
| CN110470351A (en) * | 2019-09-10 | 2019-11-19 | 贵阳学院 | A kind of gear type optic flow sensor and its flow rate testing methods |
| CN112362115A (en) * | 2020-09-09 | 2021-02-12 | 中国航空工业集团公司沈阳飞机设计研究所 | Small flow sensor based on fiber bragg grating and measuring system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |