CN102980684A - Cover plate type fiber bragg grating sensor and packaging method thereof - Google Patents
Cover plate type fiber bragg grating sensor and packaging method thereof Download PDFInfo
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- CN102980684A CN102980684A CN2012104786654A CN201210478665A CN102980684A CN 102980684 A CN102980684 A CN 102980684A CN 2012104786654 A CN2012104786654 A CN 2012104786654A CN 201210478665 A CN201210478665 A CN 201210478665A CN 102980684 A CN102980684 A CN 102980684A
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Abstract
The invention discloses a cover plate type fiber bragg grating sensor and a packaging method thereof. The cover plate type fiber bragg grating sensor comprises a grating and a protection sleeve, wherein a wire jumper and tensile fibers are fixed in the protection sleeve. One end of the protection sleeve is fixedly connected with a flange interface, and the other end of the protection sleeve is fixedly connected with a temperature sensing box. The grating is packaged in the temperature sensing box, the wire jumper and the grating are connected with each other in the temperature sensing box. The packaging method of the cover plate type fiber bragg grating sensor includes preparing the sleeve, painting temperature-resistant AB glue, welding the wire jumper and the grating in fusion mode, leading the wire jumper to penetrate through the protection sleeve, fixing one end of the wire jumper not provided with the grating with the flange interface, arranging the grating at the central position of a sensing protection groove, and buckling a packaging cover plate on the sensing protection groove. Compared with the prior art, the cover plate type fiber bragg grating sensor is good in mechanical performance, sensor performance, insulation performance and firmness, and improves sensor firmness, data collection accuracy and data collection speed. The packaging method of the cover plate type fiber bragg grating sensor greatly improves production efficiency and production survival rate, simultaneously improves sensor firmness and enables the sensor not to split or fall easily.
Description
Technical field
The invention belongs to sensor field, be specifically related to a kind of temperature sensor, and the production of this sensor.
Background technology
Fiber-optic grating sensor is wide because of its measurement range, measuring accuracy is high, intrinsic insulation, passive, characteristics that the life-span is long, in the temperature monitoring of electric power electrical apparatus, use more, its packaged type direct relation sensor of while is stablized, reliability service, and directly affects the reliability of tested electric power electrical apparatus.Traditional fiber-optic grating sensor generally adopts metal or stupalith, adopt screw thread, the single-sensor packaged type such as gluing, and these class methods are in encapsulated sensor core temperature sensing part---during grating, occur easily as the grating encapsulation difficulty is large, encapsulate not closely, not firm, along with the impact of the factors such as time, external force, there are the problems such as rate is low that easily come off, manufacture a finished product, simultaneously, also there is easily fragmentation of ceramic sensor element in the Installation and Debugging process, is unfavorable for the problems such as field conduct.Therefore make that a kind of encapsulation is simple and easy, sealing, survival rate be high, simple, the non-damageable reliable sensor of field conduct seems particularly important to assurance production efficiency, system stable operation.For improving manufacturer production efficient and product percent of pass; simplify the site operation difficulty; satisfy safety, the stable operation requirement of the temperature monitoring of electric power electrical apparatus; polyimide material is protected carrier as sensor package; the protection carrier is being adopted on the basis of cover-plate type new structure design; select industrial waterproof heatproof glue to encapsulate; the mode of optimized production process and process; can be applicable to a kind of novel sensor on the electric power electrical apparatus, can accurately reflect the electric power electrical apparatus real-time running state by this sensor.
Summary of the invention
Given this, the object of the invention is to provide that a kind of survival rate is high, firm, not fragile, the simple fiber-optic grating sensor of installation, also provides simultaneously a kind of packaging efficiency high fiber-optic grating sensor method for packing.
For solving above technical matters; technical scheme provided by the invention is; a kind of cover-plate type fiber-optic grating sensor is provided; comprise grating and protective casing, be fixedly installed wire jumper and traction-resistant fibre in the described protective casing, protective casing one end is fixedly connected with flange-interface; the described protective casing other end is fixedly connected with the temperature sense box; this temperature sense box comprises that sensing protects groove and encapsulation cover plate two parts, and grating is encapsulated in the temperature sense box, and described wire jumper and grating are connected in that the temperature sense box is inner.
Preferably, described sensing is protected and is provided with the buckle female on the groove, is provided with the buckle male on the described encapsulation cover plate.
Preferably, be provided with semi-circular recesses on described buckle female and the buckle male.
Preferably, the diameter of described semi-circular recesses equates with the external diameter of protective casing.
Preferably, described temperature sense box is made by polyimide.
Preferably, described flange-interface adopts the FC/APC flange.
The present invention also provides a kind of method for packing of above-mentioned cover-plate type fiber-optic grating sensor, and concrete steps are as follows:
A) traction-resistant fibre is passed protective casing, heatproof AB glue is evenly smeared at the total interface place that protects groove, encapsulation cover plate in sensing;
B) choose the wire jumper of being longer than protective casing, and welding grating endways; Then, wire jumper is passed the protective casing that is installed with traction-resistant fibre, an end and the flange-interface of wire jumper no-raster are fixed with heatproof AB glue, have an end of grating to reserve;
C) protective casing is stuck in the semi-circular groove of buckle female, grating is arranged on sensing protects the groove center position, grating can not touch wall or other dregs;
D) encapsulation cover plate is buckled in sensing and protects on the groove, then forward is pressed gently, and buckle male and buckle female are held in one, clears up unnecessary heatproof AB glue, leaves standstill more than 30 minutes.
Preferably, the concrete steps of described method for packing are as follows:
A) traction-resistant fibre is passed length 510mm protective casing, heatproof AB glue is evenly smeared at the total interface place that protects groove, encapsulation cover plate in sensing;
B) choose wire jumper than protective sleeve pipe range 10mm, and the grating of the long 15mm of welding endways, the wire jumper after making welding complete and the total length of grating are between 530-535mm; Then, wire jumper is passed the protective casing that is installed with traction-resistant fibre, an end and the flange-interface of wire jumper no-raster are fixed with heatproof AB glue, have an end of grating to reserve;
C) protective casing is stuck in the semi-circular groove of buckle female, grating is arranged on sensing protects the groove center position, grating can not touch wall or other dregs;
D) encapsulation cover plate is buckled in sensing and protects on the groove, then forward is pressed gently, and buckle male and buckle female are held in one, clears up unnecessary heatproof AB glue, leaves standstill more than 30 minutes.
Compared with prior art, beneficial effect of the present invention is:
1, to be encapsulated in the protection carrier be that sensing is protected in groove, the encapsulation cover plate to the grating in a kind of cover-plate type grating sensor of the present invention and the method for packing thereof; the protection carrier adopts the polyimide material; its mechanical property, sensor performance, insulating property, firm performance are good, have improved sensor firmness, accuracy of data acquisition and picking rate.
2, the present invention protects carrier through the design of the special mechanical structures such as anti-skidding, guiding, buckle; adopt a male and female buckle, gluingly press dual fixed form; greatly enhance productivity and produce motility rate, also improved the solid fixing of sensor simultaneously, be difficult for decomposing or coming off.
3, the whole polyimide material that adopts of sensor of the present invention is made, anti-ageing, resistance to compression, waterproof, fire protecting performance cause this sensor site operation simply, not fragile, be beneficial to construction.
4, optical fiber output interface of the present invention adopts the FC/APC standard interface, and installation of sensors is more convenient, changes simplyr, makes things convenient for site operation.
The cover-plate type fiber-optic grating sensor adopts fiber grating sensing technology, namely a kind of take light as carrier, optical fiber is the New Sensing Technology of medium, perception and transmission outer signals, passive non-electricity.This sensor adopts the Bragg reflection principle of fiber grating to come the physical values of perception external device.Namely when the space phase grating of light by forming with the irradiation optical fiber of ultraviolet light, the center wavelength of light signal that optical grating reflection returns is portability foreign objects reason value information, because of variation and the extraneous physical values with Bragg grating centre wavelength, linear such as temperature, pressure, gravitation etc., so get final product the physical values of perception external device by analyzing optical wavelength signal.Because the insulating property of optical fiber itself, light signal are not because of the electromagnetic environment impact, without characteristics such as source service life length.Adopt the cover-plate type buckle to add gluing encapsulation technology, better grating is encapsulated in the protection carrier, form a kind of fiber-optic grating sensor of standard interface.
Therefore, defectives such as the invention solves that the sensor production difficulty is large, efficient is low, survival rate is low, installation is complicated, be difficult for changing, easily come off when long or be fragile, provide a kind of can convenient, fastly produce, enhance productivity and quality, with standard signal interface, easily cover-plate type fiber-optic grating sensor and the manufacture method thereof of changing be installed, it has reduced the production rejection rate, save production cost, improved installation, debugging, replacing efficient.The traditional sensors material is selected because the cover-plate type fiber-optic grating sensor that the present invention manufactures has changed, encapsulating structure, and production and processing method.The present invention produces fast, efficient is efficient, easy for installation, structure is firm, elegant in appearance, debugging is simple and easy, be beneficial to and change, can directly solve not firm, the unstable potential safety hazard that causes of traditional sensors, operation provides safety guarantee to equipment and system, and also the quality of life for the development of national economy and broad masses of the people provides safeguard.This project the most intuitively advantage is to save manpower, financial resources, is the very large innovation to aspects such as traditional fiber grating sensor packing forms, material type selecting, interface mode and engineering constructions.Filled up the blank of the cover plate buckle mounting means of this field fiber-optic grating sensor product.
Description of drawings
Fig. 1 is temperature sense box structural representation of the present invention.
Fig. 2 is that sensing of the present invention is protected the groove structural representation.
Fig. 3 is encapsulation cover plate structural representation of the present invention.
Fig. 4 is protective casing of the present invention and flange-interface structural representation.
Embodiment
Describe below in conjunction with accompanying drawing and specific embodiment.
Referring to Fig. 1 to Fig. 4.The described cover-plate type fiber-optic grating sensor of present embodiment comprises grating and protective casing 2, is fixedly installed wire jumper 21 and traction-resistant fibre 22 in the described protective casing 2, and protective casing 2 one ends are fixedly connected with flange-interface 3.Wire jumper 21 is optical fiber, and namely light transmitting fiber is used for transmitting optical signal.Flange-interface 3 adopts the FC/APC flange, is the sensor signal output interface.Described protective casing 2 other ends are fixedly connected with temperature sense box 1, and this temperature sense box 1 comprises that sensing protects groove 11 and encapsulation cover plate 12 two parts, and grating is encapsulated in the temperature sense box 1, and described wire jumper 21 and grating are in 1 inner connection of temperature sense box.1 perception of temperature sense box is also transmitted temperature to grating.Grating passes to light signal wire jumper 21 again.Protective casing 2 is a white pillar.
Sensing is protected and is provided with buckle female 110 on the groove 11, is provided with buckle male 120 on the described encapsulation cover plate 12.Be provided with semi-circular recesses on buckle female 110 and the buckle male 120.When buckle female 110 and buckle male 120 fasten, surround a manhole, the equal diameters of the diameter in this hole and protective casing 2.Temperature sense box 1 and protective casing 2 are made by polyimide.
The method for packing of cover-plate type fiber-optic grating sensor comprises following four steps:
A) traction-resistant fibre 22 is passed length 510mm protective casing 2, heatproof AB glue is evenly smeared at the total interface place that protects groove 11, encapsulation cover plate 12 in sensing.That is to say, protect the position that groove 11 contacts with encapsulation cover plate 12 in sensing, sensing is protected the position that groove 11, encapsulation cover plate 12 and protective casing 12 contact and is all coated heatproof AB glue.The characteristics such as heatproof AB glue has that high thixotropic, high strength, high bonding force, weatherability are good, shock resistance and shearing force extra-heavy, and high temperature resistant degree reaches 230 degree, and electrical insulation capability is good.
B) choose wire jumper 21 than protective casing 2 long 10mm, and the grating of the long 15mm of welding endways, the long 10-15mm in the grid region of grating.Wire jumper 21 after welding is complete and the total length of grating are between 530-535mm.Then, wire jumper 21 is passed the protective casing 2 that is installed with traction-resistant fibre 22, an end and the flange-interface 3 usefulness heatproof AB glue of wire jumper 21 no-rasters are fixed, have an end of grating to reserve.
C) protective casing 2 is stuck in the semi-circular groove of buckle female 110, grating is arranged on sensing protects groove 11 centers, grating can not touch wall or other dregs.
D) encapsulation cover plate 12 is buckled in sensing and protects on the groove 11, then forward is pressed encapsulation cover plate 12 gently, and buckle male 120 and buckle female 110 are held in one, clears up unnecessary heatproof AB glue, leaves standstill more than 30 minutes.
Namely finish the canned program of fiber bragg grating sensor.
Only be preferred implementation of the present invention below, should be pointed out that above-mentioned preferred implementation should not be considered as limitation of the present invention, protection scope of the present invention should be as the criterion with the claim limited range.For those skilled in the art, without departing from the spirit and scope of the present invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (8)
1. cover-plate type fiber-optic grating sensor; comprise grating and protective casing; be fixedly installed wire jumper and traction-resistant fibre in the described protective casing; protective casing one end is fixedly connected with flange-interface; it is characterized in that the described protective casing other end is fixedly connected with the temperature sense box, this temperature sense box comprises that sensing protects groove and encapsulation cover plate two parts; grating is encapsulated in the temperature sense box, and described wire jumper is connected in temperature sense box inside with grating.
2. cover-plate type fiber-optic grating sensor according to claim 1 is characterized in that, described sensing is protected and is provided with the buckle female on the groove, is provided with the buckle male on the described encapsulation cover plate.
3. cover-plate type fiber-optic grating sensor according to claim 2 is characterized in that, is provided with semi-circular recesses on described buckle female and the buckle male.
4. cover-plate type fiber-optic grating sensor according to claim 3 is characterized in that, the diameter of described semi-circular recesses equates with the external diameter of protective casing.
5. cover-plate type fiber-optic grating sensor according to claim 1 is characterized in that, described temperature sense box is made by polyimide.
6. cover-plate type fiber-optic grating sensor according to claim 1 is characterized in that, described flange-interface adopts the FC/APC flange.
7. the method for packing of a kind as the described cover-plate type fiber-optic grating sensor of above arbitrary claim is characterized in that concrete steps are as follows:
A) traction-resistant fibre is passed protective casing, heatproof AB glue is evenly smeared at the total interface place that protects groove, encapsulation cover plate in sensing;
B) choose the wire jumper of being longer than protective casing, and welding grating endways; Then, wire jumper is passed the protective casing that is installed with traction-resistant fibre, an end and the flange-interface of wire jumper no-raster are fixed with heatproof AB glue, have an end of grating to reserve;
C) protective casing is stuck in the semi-circular groove of buckle female, grating is arranged on sensing protects the groove center position, grating can not touch wall or other dregs;
D) encapsulation cover plate is buckled in sensing and protects on the groove, then forward is pressed gently, and buckle male and buckle female are held in one, clears up unnecessary heatproof AB glue, leaves standstill more than 30 minutes.
8. method for packing according to claim 7 is characterized in that, concrete steps are as follows:
A) traction-resistant fibre is passed length 510mm protective casing, heatproof AB glue is evenly smeared at the total interface place that protects groove, encapsulation cover plate in sensing;
B) choose wire jumper than protective sleeve pipe range 10mm, and the grating of the long 15mm of welding endways, the wire jumper after making welding complete and the total length of grating are between 530-535mm; Then, wire jumper is passed the protective casing that is installed with traction-resistant fibre, an end and the flange-interface of wire jumper no-raster are fixed with heatproof AB glue, have an end of grating to reserve;
C) protective casing is stuck in the semi-circular groove of buckle female, grating is arranged on sensing protects the groove center position, grating can not touch wall or other dregs;
D) encapsulation cover plate is buckled in sensing and protects on the groove, then forward is pressed gently, and buckle male and buckle female are held in one, clears up unnecessary heatproof AB glue, leaves standstill more than 30 minutes.
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Cited By (8)
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| CN103076110A (en) * | 2012-12-26 | 2013-05-01 | 北京遥测技术研究所 | Optical fiber grating packaging structure, temperature sensor and packaging method |
| CN104142183A (en) * | 2013-05-09 | 2014-11-12 | 国家电网公司 | Temperature measuring wax sheet fixator and method for fixing temperature measuring wax sheet |
| CN106025524A (en) * | 2016-05-10 | 2016-10-12 | 西安电子科技大学 | Manufacturing method of inelegant skin antenna |
| CN106214128A (en) * | 2016-08-01 | 2016-12-14 | 华中科技大学 | A kind of optical fiber pressure catheter for digestive tract detection, preparation method and application |
| CN108507703A (en) * | 2018-05-08 | 2018-09-07 | 上海岗崎控制仪表有限公司 | A kind of biomass cracking volume sensor |
| CN108710173A (en) * | 2018-07-04 | 2018-10-26 | 中科光电集团有限公司 | A kind of micro loop device structure and its packaging technology |
| CN109612602A (en) * | 2018-12-29 | 2019-04-12 | 北京信息科技大学 | A kind of novel fiber grating temperature sensor and packaging method |
| CN114018303A (en) * | 2021-11-04 | 2022-02-08 | 天津工业大学 | Novel fiber Bragg grating probe for in-situ monitoring of hydraulic shear force |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103076110A (en) * | 2012-12-26 | 2013-05-01 | 北京遥测技术研究所 | Optical fiber grating packaging structure, temperature sensor and packaging method |
| CN103076110B (en) * | 2012-12-26 | 2016-08-03 | 北京遥测技术研究所 | Optical fibre raster package structure, temperature sensor and method for packing |
| CN104142183A (en) * | 2013-05-09 | 2014-11-12 | 国家电网公司 | Temperature measuring wax sheet fixator and method for fixing temperature measuring wax sheet |
| CN104142183B (en) * | 2013-05-09 | 2017-12-15 | 国家电网公司 | The fixing means of thermometric wax disk(-sc) fixator and thermometric wax disk(-sc) |
| CN106025524A (en) * | 2016-05-10 | 2016-10-12 | 西安电子科技大学 | Manufacturing method of inelegant skin antenna |
| CN106025524B (en) * | 2016-05-10 | 2019-07-16 | 西安电子科技大学 | A kind of production method of smart skins antenna |
| CN106214128A (en) * | 2016-08-01 | 2016-12-14 | 华中科技大学 | A kind of optical fiber pressure catheter for digestive tract detection, preparation method and application |
| CN108507703A (en) * | 2018-05-08 | 2018-09-07 | 上海岗崎控制仪表有限公司 | A kind of biomass cracking volume sensor |
| CN108710173A (en) * | 2018-07-04 | 2018-10-26 | 中科光电集团有限公司 | A kind of micro loop device structure and its packaging technology |
| CN109612602A (en) * | 2018-12-29 | 2019-04-12 | 北京信息科技大学 | A kind of novel fiber grating temperature sensor and packaging method |
| CN114018303A (en) * | 2021-11-04 | 2022-02-08 | 天津工业大学 | Novel fiber Bragg grating probe for in-situ monitoring of hydraulic shear force |
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Application publication date: 20130320 |