CN103604383A - Fiber grating sensor packaging device for measuring support and hanger pull rod strain - Google Patents
Fiber grating sensor packaging device for measuring support and hanger pull rod strain Download PDFInfo
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- CN103604383A CN103604383A CN201310541551.4A CN201310541551A CN103604383A CN 103604383 A CN103604383 A CN 103604383A CN 201310541551 A CN201310541551 A CN 201310541551A CN 103604383 A CN103604383 A CN 103604383A
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Abstract
The invention discloses a fiber grating sensor packaging device for measuring support and hanger pull rod strain. The device is formed by a base and a cover plate. The base is formed by two clamping components which are symmetrically arranged at left and right sides. The two clamping components are connected to be a whole body through an arc bottom face. Each of the clamping components is formed by end parts arranged at two ends and a center part arranged in the middle. A bare grating area is arranged between the two clamping components which are symmetrically arranged at left and right sides. Two ends of the bare grating area are provided with fiber areas. The other end of each of the fiber areas is provided with a fiber clamp area. According to the technical scheme of the invention, in order to raise the fitness of a fiber grating sensor pull rod, the base is designed to be a circular arc surface which is matched with the curve of a fixed position, in the process of packaging, the fiber grating is placed into the bare fiber area and the fiber areas and is clamped tightly through fiber clamps, an instantaneous drying adhesive is used to fix a fiber position to be tightly attached with a package base, an epoxy resin adhesive is used for permanent fixation, and finally a cover plate and the base are bonded to be a whole body.
Description
Technical field
The invention belongs to strain transducer field, relate to a kind of device of protecting the encapsulation of fiber grating, relate to specifically a kind of grating fibers packaging system of measuring the strain of round bar member.
Background technology
At present, thermal power generation is dominate in China's power industry, ultra supercritical thermal power generation unit is because its generating efficiency is high, energy resource consumption is little, become gradually the main flow trend of genset, but the service condition of ultra supercritical unit harshness is had higher requirement to the Installation and Debugging of parts.Jet chimney, as the pipeline of ultra supercritical unit, due to its critical role, requires very strict to the monitoring in Installation and Debugging and military service process.Research finds that in genset, the suspension and support service state for fixed bearing jet chimney is very large on the stress distribution impact of pipeline.During suspension and support abnormality, may affect the security of pipeline, so suspension and support is carried out to Real-Time Monitoring, be necessary very much.
Fiber-optic grating sensor is highly sensitive owing to possessing, be not subject to electromagnetic interference (EMI), volume is little, loss is low, the feature such as simple in structure, is widely applied to stress measurement field.Conventional fiber-optic grating sensor directly sticks on FBG on the tested point of test specimen, the method has operation sheet, can observe and the damage of controlling FBG in assembling process, to the easily changeable advantage of the sensor having damaged, but shortcoming is be subject to outside destroy and be affected by the external environment.Current alternative method is generally that FBG is sticked on piece of metal sheet.The effect of protection FBG sensor can be partly played in sheet metal encapsulation, and possesses the advantage of simple operation.Because the very thin matter of bare fibre is crisp, especially shear ability is poor, directly using fiber grating as sensor, in engineering reality, has run into the difficult problem on installation technics.Therefore, how naked FBG is carried out to packaging protection, FBG sensor can be protected and realistic operating mode, have great importance.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of optical fiber Bragg grating encapsulation protective device of Real-Time Monitoring suspension and support pull bar strain regime is provided.
Technical purpose of the present invention is achieved by following technical proposals:
A kind of fiber-optic grating sensor packaging system of measuring the strain of suspension and support pull bar, by base and cover plate, formed, described cover plate is arranged on base top, to play the effect of protection and isolation, described base is comprised of two hold assemblies that are symmetrical set, described two hold assemblies connect as one by lower arcuate surface, described hold assembly forms by being arranged on the termination parts at two ends and being arranged on central intermediate member, between two hold assemblies that are symmetrical set, be provided with naked grating region, two ends in described naked grating region arrange respectively fiber region, the other end in described fiber region arranges fiber clamp district.
Described termination parts are fixedly connected with and are integral with intermediate member.
Naked grating region is set between the intermediate member of two hold assemblies in left and right, be used for placing naked grating, between the termination parts of two hold assemblies in left and right, fiber clamp district is set, be used for arranging fiber clamp and fix optical fiber, in left and right, the termination parts of two hold assemblies and intermediate member connecting portion arrange fiber region, are used for placing optical fiber.
In technical scheme of the present invention, in order to improve fiber-optic grating sensor with the laminating degree of pull bar, base designs becomes to have the arc surface of certain curvature, match with the radian of fixed position, during encapsulation, fiber grating is put into the center (being naked grating region and fiber region) of the intermediate groove of sensor housing, fiber grating is by fiber clamp tensioning, optical fiber and encapsulation base plate fit tightly, first use instant drying adhesive fixed fiber position, then adopt epoxide-resin glue to be permanently fixed, finally by cover plate and base is bonding is integral.
Accompanying drawing explanation
Fig. 1 is the perspective view of base in the present invention.
Fig. 2 is the perspective view of cover plate in the present invention.
Fig. 3 is the vertical view of base in the present invention, and wherein 1 is intermediate member, and 2 is naked grating region, and 3 is termination parts, and 4 is fiber region, and 5 is fiber clamp district.
Fig. 4 is the side view of base in the present invention, and wherein 1 is intermediate member, and 3 is termination parts.
Embodiment
Below in conjunction with specific embodiment, further describe technical scheme of the present invention.
Shown in accompanying drawing 1-4,1 is intermediate member, and 2 is naked grating region, and 3 is termination parts, and 4 is fiber region, and 5 is fiber clamp district.Packaging system of the present invention; base and cover plate, consist of, described cover plate is arranged on base top, to play the effect of protection and isolation; described base is comprised of two hold assemblies that are symmetrical set, and described two hold assemblies connect as one by lower arcuate surface.
Described hold assembly forms by being arranged on the termination parts 3 at two ends and being arranged on central intermediate member 1, between two hold assemblies that are symmetrical set, be provided with naked grating region 2, at the two ends of described naked grating region, fiber region 4 be set respectively, the other end in described fiber region arranges fiber clamp district 5.
Described termination parts are fixedly connected with and are integral with intermediate member.
Naked grating region is set between the intermediate member of two hold assemblies in left and right, be used for placing naked grating, between the termination parts of two hold assemblies in left and right, fiber clamp district is set, be used for arranging fiber clamp and fix optical fiber, in left and right, the termination parts of two hold assemblies and intermediate member connecting portion arrange fiber region, are used for placing optical fiber.
It is example that the packaging system of take is fixed on the suspension and support pull bar of Φ 56, by base curvature radial design, is R=28mm.During encapsulation, bare optical fibers and bare optical gratings is put into the naked grating region and the ， two ends, fiber region that on encapsulation base plate, are of a size of 24 * 0.5 * 1.5mm and by fiber clamp, make bare optical fibers and bare optical gratings in tensioning state; Use instant drying adhesive fixed fiber grating and fiber clamp, itself and encapsulation base plate are fitted tightly, adopt epoxide-resin glue base to be fixed on the suspension and support pull bar of Φ 56; Between cover plate and housing, put into epoxide-resin glue and be integral they are bonding, sensor package apparatus completes.
Above the present invention has been done to exemplary description; should be noted that; in the situation that not departing from core of the present invention, the replacement that is equal to that any simple distortion, modification or other those skilled in the art can not spend creative work all falls into protection scope of the present invention.
Claims (4)
1. a fiber-optic grating sensor packaging system of measuring the strain of suspension and support pull bar, by base and cover plate, formed, described cover plate is arranged on base top, to play the effect of protection and isolation, it is characterized in that, described base is comprised of two hold assemblies that are symmetrical set, described two hold assemblies connect as one by lower arcuate surface, described hold assembly forms by being arranged on the termination parts at two ends and being arranged on central intermediate member, between two hold assemblies that are symmetrical set, be provided with naked grating region, two ends in described naked grating region arrange respectively fiber region, the other end in described fiber region arranges fiber clamp district.
2. a kind of fiber-optic grating sensor packaging system of measuring the strain of suspension and support pull bar according to claim 1, is characterized in that, described termination parts are fixedly connected with and are integral with intermediate member.
3. a kind of fiber-optic grating sensor packaging system of measuring the strain of suspension and support pull bar according to claim 1, is characterized in that, described lower arcuate surface matches with the radian of fixed position.
4. a kind of fiber-optic grating sensor packaging system of measuring the strain of suspension and support pull bar according to claim 1, it is characterized in that, naked grating region is set between the intermediate member of two hold assemblies in left and right, be used for placing naked grating, between the termination parts of two hold assemblies in left and right, fiber clamp district is set, be used for arranging fiber clamp and fix optical fiber, in left and right, the termination parts of two hold assemblies and intermediate member connecting portion arrange fiber region, are used for placing optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310541551.4A CN103604383A (en) | 2013-11-04 | 2013-11-04 | Fiber grating sensor packaging device for measuring support and hanger pull rod strain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310541551.4A CN103604383A (en) | 2013-11-04 | 2013-11-04 | Fiber grating sensor packaging device for measuring support and hanger pull rod strain |
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| CN103604383A true CN103604383A (en) | 2014-02-26 |
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| CN201310541551.4A Pending CN103604383A (en) | 2013-11-04 | 2013-11-04 | Fiber grating sensor packaging device for measuring support and hanger pull rod strain |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867793A (en) * | 2014-03-20 | 2014-06-18 | 大连理工大学 | Controllable-pretension FBG (Fiber Bragg Grating) strain hoop gripper system |
| CN104567709A (en) * | 2015-01-14 | 2015-04-29 | 广州大学 | Optical fiber raster sensor patch shaped like a Chinese character 'wang' |
| CN104677302A (en) * | 2015-03-24 | 2015-06-03 | 北京航空航天大学 | Three-dimensional sensor based on fiber bragg grating and sensor main body of three-dimensional sensor |
| EP2885619A1 (en) * | 2012-08-15 | 2015-06-24 | Siemens Energy, Inc. | Frame foot loading measurement system using fiber optic sensing technique |
| CN106918295A (en) * | 2017-03-20 | 2017-07-04 | 海南瑞泽新材料研究院有限公司 | A kind of fiber-optic grating sensor and its measuring method for measuring arc component deformation |
| CN107356208A (en) * | 2017-07-07 | 2017-11-17 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of concrete structure health monitoring sensor based on distribution type fiber-optic |
| CN108838594A (en) * | 2018-08-23 | 2018-11-20 | 北京通为科技有限公司 | The encapsulating structure of fiber-optic grating sensor |
| CN110319958A (en) * | 2019-07-23 | 2019-10-11 | 桂林理工大学 | The preparation and application of fiber bragg grating sensing device and the pressure rings using it |
| CN111811722A (en) * | 2020-07-10 | 2020-10-23 | 北京交通大学 | Motor vertical load testing structure and method for rib plate type motor suspension force measuring framework |
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| CN1197443A (en) * | 1995-09-29 | 1998-10-28 | 康宁股份有限公司 | Method and appts. for making fiber optic couplers |
| JP2002258070A (en) * | 2001-02-28 | 2002-09-11 | Hitachi Cable Ltd | Dispersion compensating fiber grating module |
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| CN102162757A (en) * | 2010-12-02 | 2011-08-24 | 山东科技大学 | Fiber grating earth pressure sensor |
| CN202494531U (en) * | 2012-02-28 | 2012-10-17 | 上海紫珊光电技术有限公司 | Packaging piece capable of avoiding stress and enhancing sensitivity for FBG grating temperature sensor |
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2013
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| CN1197443A (en) * | 1995-09-29 | 1998-10-28 | 康宁股份有限公司 | Method and appts. for making fiber optic couplers |
| US7433559B1 (en) * | 2000-01-28 | 2008-10-07 | Ciena Corporation | Temperature-compensated grating package and method of making the same |
| JP2002258070A (en) * | 2001-02-28 | 2002-09-11 | Hitachi Cable Ltd | Dispersion compensating fiber grating module |
| JP2002267848A (en) * | 2001-03-06 | 2002-09-18 | Fujikura Ltd | Variable light attenuator, optical module, light amplifier and optical communication system |
| CN101140460A (en) * | 2006-09-06 | 2008-03-12 | 北京数码大方科技有限公司 | Method and apparatus for driving numerically controlled machine to execute space circular arc interpolation process |
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| CN102162757A (en) * | 2010-12-02 | 2011-08-24 | 山东科技大学 | Fiber grating earth pressure sensor |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2885619A1 (en) * | 2012-08-15 | 2015-06-24 | Siemens Energy, Inc. | Frame foot loading measurement system using fiber optic sensing technique |
| CN103867793B (en) * | 2014-03-20 | 2015-10-28 | 大连理工大学 | A kind of controlled pretensioned fiber grating strain hoop clamp device system |
| CN103867793A (en) * | 2014-03-20 | 2014-06-18 | 大连理工大学 | Controllable-pretension FBG (Fiber Bragg Grating) strain hoop gripper system |
| CN104567709A (en) * | 2015-01-14 | 2015-04-29 | 广州大学 | Optical fiber raster sensor patch shaped like a Chinese character 'wang' |
| CN104567709B (en) * | 2015-01-14 | 2017-05-10 | 广州大学 | Optical fiber raster sensor patch shaped like a Chinese character 'wang' |
| CN104677302B (en) * | 2015-03-24 | 2017-11-24 | 北京航空航天大学 | A kind of three-dimension sensor and its sensor main body based on fiber grating |
| CN104677302A (en) * | 2015-03-24 | 2015-06-03 | 北京航空航天大学 | Three-dimensional sensor based on fiber bragg grating and sensor main body of three-dimensional sensor |
| CN106918295A (en) * | 2017-03-20 | 2017-07-04 | 海南瑞泽新材料研究院有限公司 | A kind of fiber-optic grating sensor and its measuring method for measuring arc component deformation |
| CN107356208A (en) * | 2017-07-07 | 2017-11-17 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of concrete structure health monitoring sensor based on distribution type fiber-optic |
| CN108838594A (en) * | 2018-08-23 | 2018-11-20 | 北京通为科技有限公司 | The encapsulating structure of fiber-optic grating sensor |
| CN108838594B (en) * | 2018-08-23 | 2023-10-27 | 北京通为科技有限公司 | Packaging structure of fiber Bragg grating sensor |
| CN110319958A (en) * | 2019-07-23 | 2019-10-11 | 桂林理工大学 | The preparation and application of fiber bragg grating sensing device and the pressure rings using it |
| CN111811722A (en) * | 2020-07-10 | 2020-10-23 | 北京交通大学 | Motor vertical load testing structure and method for rib plate type motor suspension force measuring framework |
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Application publication date: 20140226 |