CN202599565U - Nonmetal packaging fiber grating sensor - Google Patents
Nonmetal packaging fiber grating sensor Download PDFInfo
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- CN202599565U CN202599565U CN201220226960.6U CN201220226960U CN202599565U CN 202599565 U CN202599565 U CN 202599565U CN 201220226960 U CN201220226960 U CN 201220226960U CN 202599565 U CN202599565 U CN 202599565U
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Abstract
The utility model relates to a nonmetal packaging fiber grating sensor. The nonmetal packaging fiber grating sensor comprises a thermal conductive ceramic substrate (1), a fiber Bragg grating (2), quartz capillaries (3), a polyester elastic loose tube (4), a single-mode fiber (5) and a transparent epoxy adhesive (6). The purpose of using the concave thermal conductive ceramic as the substrate material is to enhance the mechanical strength and the thermal conductivity of the sensor. The quartz capillaries (3) are crammed into the polyester elastic loose tube (4), are put into a concave groove of the thermal conductive ceramic substrate (1), and are fixed by the transparent epoxy adhesive (6). The purpose of doing such is to enhance the mechanical strength of the single-mode fiber (5) and the fiber Bragg grating gate region, to guarantee that the fiber Bragg grating (2) freely telescopes as the temperature changes, and to prevent cross sensitive influence caused by that the grating is bent due to stress. As a temperature sensing member, no metal members are used in the whole structure.
Description
Technical field
The utility model relates to a kind of non-metal optical fiber Bragg grating encapsulation technology.Particularly relate to a kind of no any metal material, utilize the fiber-optic grating sensor spare of quartz capillary, spill thermal conductive ceramic material, polyester elasticity pine sleeve pipe and epoxy glue encapsulation, realize temperature sensing particular surroundings.
Background technology
Fiber grating is a kind of novel optical passive component; Have that very strong anti-electromagnetic interference capability, volume are little, light weight, the life-span is long, potential safety hazard is little, can realize advantages such as quasi-distributed measurement and electrical isolation; Therefore; Fiber grating is in optical fiber communication, and all there is wide application prospect in fields such as Fibre Optical Sensor and optical information processing.A little less than but bare fibre Bragg grating is highly brittle; Diameter has only 125 μ m; Physical strength greatly reduces, when reality is used especially site operation since glass material optical fiber very thin, easy to break, easily broken, be subject to an outer stress rupture; Increase difficulty for construction, what also make bare optical fibers and bare optical gratings widely-usedly receives very big restriction.
To field condition, should carry out good encapsulation to fiber grating, can carry out excellent protection to fiber grating, can make the effect of grating unaffected again.Therefore designing practical fiber grating packaging technology has very big meaning.The method for packing of having reported at present has polymer encapsulated method, semimetal package method and steel disc package method, does not also utilize the case of thermal conductive ceramic encapsulated sensor.
For the encapsulation of sensor, different application scenarios requires also different.For example in some strong-electromagnetic fields zone, the sensor of Metal Packaging can produce heat because strong-electromagnetic field forms eddy current, and the measurement of temperature is had very big influence.So at the fiber-optic grating sensor that just necessarily requires to use nonmetal encapsulation in such cases.Fiber grating all has sensitivity characteristic in various degree, i.e. cross sensitivity for different kinds of parameters such as stress, strain, temperature etc. in addition.It during as temperature sensor, also need be improved the sensitivity of temperature parameters through encapsulation technology, avoid the influence of the cross sensitivity of parameters such as crooked and stress.Therefore the fiber-optic grating sensor encapsulation rationally whether, direct last measure accurate of influence.
Summary of the invention
The utility model purpose is to solve the sensor of existing Metal Packaging because the eddy current that strong-electromagnetic field forms and in metallic conductor, produce heat, and the measurement of temperature is had the problem of very big influence, and a kind of nonmetal packaged fiber grating sensor is provided.Be specifically related to a kind of optical fiber Bragg grating sensor that utilizes quartz capillary, thermal conductive ceramic, polyester elasticity pine sleeve pipe and epoxy glue encapsulation.
The nonmetal packaged fiber grating sensor that the utility model provides comprises thermal conductive ceramic substrate (1), optical fiber Bragg raster (2), quartz capillary (3), polyester elasticity pine sleeve pipe (4), single-mode fiber (5) and transparent epoxy glue (6); The one side of said thermal conductive ceramic substrate (1) has a concave groove; The part of quartz capillary (3) is tucked into polyester elasticity pine sleeve pipe (4) one ends; Insert in the concave groove of thermal conductive ceramic substrate (1) and and fix with transparent epoxy glue (6); The end of single-mode fiber (5) is optical fiber Bragg raster (2), and there is color mark at the two ends, grid region, and optical fiber Bragg raster (2) is filled in polyester elasticity pine sleeve pipe (4); The grid region of optical fiber Bragg raster (2) is in the polyester elasticity pine sleeve pipe (4) and quartz capillary (3) of groove internal fixation of thermal conductive ceramic substrate (1) just, and does not exceed quartz capillary.
The length of described thermal conductive ceramic substrate (1) is 2cm-5cm, and wide is 3mm-7mm, and height is 2mm-5mm.Groove in the thermal conductive ceramic substrate (1) and thermal conductive ceramic substrate (1) are isometric, and groove is wide to be 1mm, and height is 1mm.
The long 4cm-6cm of said quartz capillary (3) is tucked into polyester elasticity pine sleeve pipe (4) middle part and is divided into 2cm-5cm, the long 0.5m-2m of polyester elasticity pine sleeve pipe (4).
In shape, material and textural, the characteristics of the utility model sensor: the thermal conductive ceramic that uses spill is as base material, and function is to increase sensor physical strength and heat conduction.About 6cm quartz capillary is tucked into the about 3cm of long polyester elasticity pine sleeve pipe one end of about 1m; Put it in the concave groove of thermal conductive ceramic; Make the junction of quartz capillary and polyester elasticity pine sleeve pipe put into the about center position of concave groove, fix with epoxy glue, its function is the physical strength that increases optical fiber and grating grid region; And guaranteeing that grating freely stretches in kapillary, the cross sensitivity of avoiding grating caused by the stress bending influences.At last optical fiber Bragg raster is filled in loose sleeve pipe, make the grid region of grating be arranged in the quartz capillary of thermal conductive ceramic concave groove and do not exceed, its function is that fiber grating is as temperature sensor.
The advantage of the nonmetal packaged fiber grating sensor of the utility model is: be applicable to the temperature survey that requires no metal special occasions; Utilize the thermal conductive ceramic heat conduction efficiency high, temperature value measured is more accurate; The grid region of grating is inserted in the quartz capillary, both can protects its physical strength, can guarantee its degree of freedom again, the cross sensitivity of avoiding parameters such as crooked and stress to cause.
Description of drawings
Fig. 1 is the one-piece construction schematic top plan view of the utility model.
Fig. 2 is the one-piece construction front view of the utility model.
Among the figure: 1 thermal conductive ceramic substrate, 2 optical fiber Bragg rasters, 3 quartz capillaries, 4 polyester elasticity pine sleeve pipe, 5 single-mode fibers, 6 transparent epoxy glue.
Below in conjunction with accompanying drawing and embodiment the nonmetal packaged fiber grating sensor structure of the utility model is made and to be further specified.
Embodiment
Embodiment
As shown in Figure 1, the nonmetal packaged fiber grating sensor structure of the utility model comprises thermal conductive ceramic substrate (1), optical fiber Bragg raster (2), quartz capillary (3), polyester elasticity pine sleeve pipe (4), single-mode fiber (5) and transparent epoxy glue (6).One side of thermal conductive ceramic substrate (1) has a groove; Quartz capillary (3) is tucked into an end in the polyester elasticity pine sleeve pipe (4); Polyester elasticity pine sleeve pipe (4) is inserted in the groove of thermal conductive ceramic substrate (1) and with transparent epoxy glue (6) and is fixed; The end of single-mode fiber (5) is optical fiber Bragg raster (2), and there is color mark at the two ends, grid region, and optical fiber Bragg raster (2) is filled in the polyester elasticity pine sleeve pipe (4); The grid region of optical fiber Bragg raster (2) is in the quartz capillary (3) fixing in the groove of thermal conductive ceramic substrate (1) just, and does not exceed quartz capillary.
The nonmetal packaged fiber grating sensor of the utility model structure in shape, material and constructional principal feature is: the thermal conductive ceramic substrate (1) of using nonmetal spill its objective is to strengthen sensor physical strength and heat conduction as base material.About 6cm quartz capillary (3) is linked into about 3cm in the long polyester elasticity pine sleeve pipe of about 1m (4); Put it in the groove of thermal conductive ceramic (1); Make the quartz capillary (3) and the junction of polyester elasticity pine sleeve pipe (4) put into the about center position of groove; Fixing with transparent epoxy glue (6); Its objective is the physical strength that strengthens single-mode fiber (5) and optical fiber Bragg raster grid region, and guarantee that optical fiber Bragg raster (2) freely stretches with temperature variation, the cross sensitivity of avoiding grating caused by the stress bending influences.At last optical fiber Bragg raster (2) is filled in polyester elasticity pine sleeve pipe (4); The grid region of optical fiber Bragg raster (2) is in the quartz capillary (3) of thermal conductive ceramic substrate (1) groove just; Reach its purpose, do not use metal device in the total as temperature sensor.
Described single-mode fiber (5) adopts the single-mode fiber of C-band.
Described concave structure thermal conductive ceramic is according to sized: the long 2-5cm of thermal conductive ceramic, wide 5mm, high about 3mm; Concave structure is positioned at the positive center approximately of thermal conductive ceramic, and is the same with thermal conductive ceramic long, wide 1mm, high 1mm.
The about 320 μ m of described quartz capillary (3) internal diameter, the about 450 μ m of external diameter.
The about 500 μ m of described polyester elasticity pine sleeve pipe (4) internal diameter, the about 800 μ m of external diameter.
The utility model fiber-optic grating sensor has been applied in the high-tension switch cabinet as temperature sensor at present.Compare electronic temperature transmitter spare, under strong electromagnetic field environment, the fiber-optic grating sensor of the nonmetal thermal conductive ceramic substrate of the utility model (1) encapsulation can not receive electromagnetic interference (EMI), can not occur because the situation of electromagnetic eddy heating yet., optical fiber Bragg raster (2) avoided the cross sensitivity characteristic of parameters such as bending, stress when being played a protective role again.
Realize that the utility model preferred plan is that spill thermal conductive ceramic substrate (1) is main; The spill thermal conductive ceramic can be customized according to certain size; Quartz capillary (3) and polyester elasticity pine sleeve pipe (4) and epoxy transparent adhesive tape are all more common, and this just can better realize the practical value and the economic worth of the nonmetal packaged fiber grating sensor of the utility model.
Claims (5)
1. a nonmetal packaged fiber grating sensor is characterized in that this sensor comprises thermal conductive ceramic substrate (1), optical fiber Bragg raster (2), quartz capillary (3), polyester elasticity pine sleeve pipe (4), single-mode fiber (5) and transparent epoxy glue (6); The one side of said thermal conductive ceramic substrate (1) has a concave groove; The part of quartz capillary (3) is tucked into polyester elasticity pine sleeve pipe (4) one ends; Insert in the concave groove of thermal conductive ceramic substrate (1) and and fix with transparent epoxy glue (6); The end of single-mode fiber (5) is optical fiber Bragg raster (2), and there is color mark at the two ends, grid region, and optical fiber Bragg raster (2) is filled in polyester elasticity pine sleeve pipe (4); The grid region of optical fiber Bragg raster (2) is in the polyester elasticity pine sleeve pipe (4) and quartz capillary (3) of groove internal fixation of thermal conductive ceramic substrate (1) just, and does not exceed quartz capillary.
2. nonmetal packaged fiber grating sensor according to claim 1, the length that it is characterized in that described thermal conductive ceramic substrate (1) is 2cm-5cm, and wide is 3mm-7mm, and height is 2mm-5mm.
3. nonmetal packaged fiber grating sensor according to claim 1 is characterized in that groove and the thermal conductive ceramic substrate (1) in the said thermal conductive ceramic substrate (1) is isometric, and groove is wide to be 1mm, and height is 1mm.
4. nonmetal packaged fiber grating sensor according to claim 1 is characterized in that the long 4-6cm of said quartz capillary (3), is tucked into polyester elasticity pine sleeve pipe (4) part and is 2-5cm, the long 0.5m-2m of polyester elasticity pine sleeve pipe (4).
5. nonmetal packaged fiber grating sensor according to claim 1; It is characterized in that described optical fiber Bragg raster (2); There is color mark at the two ends, grid region; Optical fiber Bragg raster (2) is filled in polyester elasticity pine sleeve pipe (4), make the grid region be arranged in the polyester elasticity pine sleeve pipe (4) and the quartz capillary (3) of the groove internal fixation of thermal conductive ceramic substrate (1) just, and do not exceed quartz capillary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220226960.6U CN202599565U (en) | 2012-05-18 | 2012-05-18 | Nonmetal packaging fiber grating sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220226960.6U CN202599565U (en) | 2012-05-18 | 2012-05-18 | Nonmetal packaging fiber grating sensor |
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| Publication Number | Publication Date |
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| CN202599565U true CN202599565U (en) | 2012-12-12 |
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| CN201220226960.6U Expired - Fee Related CN202599565U (en) | 2012-05-18 | 2012-05-18 | Nonmetal packaging fiber grating sensor |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103076109A (en) * | 2012-12-26 | 2013-05-01 | 武汉理工大学 | Magnetic type flaky optical fiber grating temperature sensor |
| CN103604539A (en) * | 2013-05-10 | 2014-02-26 | 长安大学 | Design and manufacture of FBG sensing unit of miniature anchor rod and packaging method of optical fiber |
| CN104142189A (en) * | 2014-08-22 | 2014-11-12 | 国家电网公司 | Fiber bragg grating temperature sensor applied to power equipment |
| CN107014520A (en) * | 2017-05-18 | 2017-08-04 | 中国航空工业集团公司北京长城计量测试技术研究所 | A kind of capillary type high temperature fiber grating temperature sensor and preparation method thereof |
| CN107219020A (en) * | 2017-07-21 | 2017-09-29 | 无锡市曙光电缆有限公司 | A kind of power cable joint temperature-measuring system |
| CN107681419A (en) * | 2017-10-16 | 2018-02-09 | 四川思创优光科技有限公司 | Gain fibre radiator structure, gain fibre device and installation method |
| CN108413886A (en) * | 2018-01-23 | 2018-08-17 | 山西省交通科学研究院 | A kind of FBG encapsulating structures that can monitor soil body micro-strain and packaging method |
| CN108801308A (en) * | 2018-08-29 | 2018-11-13 | 闫静 | A kind of fiber grating Multifunction Sensor |
| RU187529U1 (en) * | 2018-10-24 | 2019-03-12 | Федеральное Государственное Унитарное Предприятие "Всероссийский Научно-Исследовательский Институт Автоматики Им.Н.Л.Духова" (Фгуп "Внииа") | Spectral Temperature Transmitter |
| CN109507453A (en) * | 2018-12-06 | 2019-03-22 | 广州广电计量检测股份有限公司 | A kind of revolving speed calibration system and calibration method based on fiber grating |
-
2012
- 2012-05-18 CN CN201220226960.6U patent/CN202599565U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103076109A (en) * | 2012-12-26 | 2013-05-01 | 武汉理工大学 | Magnetic type flaky optical fiber grating temperature sensor |
| CN103076109B (en) * | 2012-12-26 | 2015-04-08 | 武汉理工大学 | Magnetic type flaky optical fiber grating temperature sensor |
| CN103604539A (en) * | 2013-05-10 | 2014-02-26 | 长安大学 | Design and manufacture of FBG sensing unit of miniature anchor rod and packaging method of optical fiber |
| CN103604539B (en) * | 2013-05-10 | 2016-02-03 | 长安大学 | A kind of miniature anchor rod FBG sensing unit be equipped with the method for packing with optical fiber |
| CN104142189A (en) * | 2014-08-22 | 2014-11-12 | 国家电网公司 | Fiber bragg grating temperature sensor applied to power equipment |
| CN104142189B (en) * | 2014-08-22 | 2017-02-15 | 国家电网公司 | Fiber bragg grating temperature sensor applied to power equipment |
| CN107014520A (en) * | 2017-05-18 | 2017-08-04 | 中国航空工业集团公司北京长城计量测试技术研究所 | A kind of capillary type high temperature fiber grating temperature sensor and preparation method thereof |
| CN107219020A (en) * | 2017-07-21 | 2017-09-29 | 无锡市曙光电缆有限公司 | A kind of power cable joint temperature-measuring system |
| CN107681419A (en) * | 2017-10-16 | 2018-02-09 | 四川思创优光科技有限公司 | Gain fibre radiator structure, gain fibre device and installation method |
| CN108413886A (en) * | 2018-01-23 | 2018-08-17 | 山西省交通科学研究院 | A kind of FBG encapsulating structures that can monitor soil body micro-strain and packaging method |
| CN108801308A (en) * | 2018-08-29 | 2018-11-13 | 闫静 | A kind of fiber grating Multifunction Sensor |
| RU187529U1 (en) * | 2018-10-24 | 2019-03-12 | Федеральное Государственное Унитарное Предприятие "Всероссийский Научно-Исследовательский Институт Автоматики Им.Н.Л.Духова" (Фгуп "Внииа") | Spectral Temperature Transmitter |
| CN109507453A (en) * | 2018-12-06 | 2019-03-22 | 广州广电计量检测股份有限公司 | A kind of revolving speed calibration system and calibration method based on fiber grating |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121212 Termination date: 20130518 |