CN201464666U - Fully sealed fiber grating packaging structure - Google Patents
Fully sealed fiber grating packaging structure Download PDFInfo
- Publication number
- CN201464666U CN201464666U CN2009200764147U CN200920076414U CN201464666U CN 201464666 U CN201464666 U CN 201464666U CN 2009200764147 U CN2009200764147 U CN 2009200764147U CN 200920076414 U CN200920076414 U CN 200920076414U CN 201464666 U CN201464666 U CN 201464666U
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- seal box
- fiber grating
- magnet
- utmost point
- fiber
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- Expired - Fee Related
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- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Abstract
The utility model discloses a fully sealed fiber grating packaging structure, which comprises a seal box, an upper magnet, a fiber grating and a lower magnet, wherein the inside of the seal box is fixed with a spring steel girder; the upper magnet is fixed on the spring steel girder by an adjustable bolt, which enables a north pole or a south pole of the upper magnet to face an ejector pin box connected with the bottom of the seal box; the fiber grating is fixed in the seal box and enables optical fibers connected to two ends to pass through a fiber outlet on the seal box respectively; the fiber outlet is sealed by an epoxy adhesive; the lower magnet is arranged on an ejector pin in the ejector pin box; the ejector pin is sleeved with a resetting spring; and a north pole or a south pole of the lower magnet are over against the north pole or the south pole of the upper magnet. The fully sealed fiber grating packaging structure has excellent sealing performance, can enable the fiber grating to be applied in any hostile environment, and has the advantages of simple structure, low cost and easy realization.
Description
Technical field
The utility model relates to the encapsulating structure that a kind of fiber grating seals fully.
Background technology
Fiber grating is a kind ofly optical fiber with light sensitive characteristic is exposed and to be formed a kind of new optical devices that refractive index cycle changes in the fiber cores district by ultraviolet light.Because the variation of environment temperature can make fiber lengths and fiber core refractive index change, and then causes an important parameter---the drift of grating centre wavelength of grating.Over the past two years, fiber grating was progressively carried out in the application in fields such as communication, optics, electronics, sensing, especially increased rapidly at sensory field, progressively reached practicability.Yet need overcome because the infringement that rugged surroundings encapsulate fiber grating in many fields that fiber grating is used.What the fixed bonding of fiber-optic grating sensor adopted usually at present is organic colloids such as two component epoxy glue or ultraviolet glue, but these bonding agents under rugged surroundings (as corrosive gas or liquid, hot and humid, be immersed under water or the like) can lose bonding effect very soon, thereby fiber grating is come off from structural member, lose the sensing effect.
The utility model content
For solving the problem that prior art exists, the utility model proposes the encapsulating structure that a kind of fiber grating seals fully, it can make fiber grating be arranged in the seal box of sealing fully, thereby fiber-optic grating sensor can be applied in the exceedingly odious environment.
The utility model is solved by the following technical programs:
The encapsulating structure that a kind of fiber grating seals fully, comprise seal box, described seal box internal fixation has a spring girder steel, magnet is fixed on the described spring girder steel by an expansion screw on one, and make the N utmost point of magnet on this or the S utmost point towards the push rod box that is connected with described seal box bottom, the optical fiber that one fiber grating is fixed in the described seal box and the optical fiber that two is connected passes respectively on the described seal box exports, and seals with epoxy glue in the optical fiber outlet; One lower magnet places and places on the push rod in the described push rod box, is with back-moving spring on the push rod, and makes the N utmost point of this lower magnet or the S utmost point N utmost point or the S utmost point over against last magnet.
Owing to adopt above technical scheme, the utility model can make in the seal box that fiber grating seals fully, isolated fully with the external world, with external influence power is to transmit by the magnetic field of strong magnet, fiber-optic grating sensor is applied in the exceedingly odious environment, and the utility model realization simple in structure, easy.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is elaborated:
Fig. 1 is a structural representation of the present utility model.
Among the figure:
1 seal box; 2 fiber gratings; 3 spring girder steels; The outlet of 4 optical fiber; 5 expansion screws; Magnet on 6; 7 lower magnets; 8 back-moving springs; 9 push rod boxes; 10 push rods
Embodiment
Below with reference to the accompanying drawings and embodiment, the utility model is further described:
As shown in Figure 1, the encapsulating structure that a kind of fiber grating seals fully, comprise seal box 1, seal box 1 internal fixation has spring girder steel 3, last magnet 6 is fixed on the spring girder steel 3 by expansion screw 5, and making the N utmost point of magnet 6 on this or the S utmost point towards the push rod box 9 that is connected with seal box 1 bottom, fiber grating 2 is fixed in the seal box 1 and the optical fiber that two is connected passes optical fiber outlet 4 on the seal box 1 respectively, and seals at optical fiber outlet 4 usefulness epoxy glues; Lower magnet 7 places and places on the push rod 10 in this push rod box 9, is with back-moving spring 8 on the push rod 10, and makes the N utmost point of this lower magnet 7 or the S utmost point N utmost point or the S utmost point over against last magnet 6.
The length that the utility model can be by regulating spring girder steel 3 and the magnetic of flexible and strong magnet change in the structure fiber grating to the susceptibility of acting force.
The utility model is stained with the glue position with the fiber grating of fragility and grating and is placed in the complete seal box.Normal light fiber grating sensor easily worn part is exactly that fiber grating and grating are stained with the glue position.This fiber-optic grating sensor of sealing back just can be than long-term work under the rugged environment so fully; Extraneous acting force (as temperature, strain, pressure, displacement or the like) physical quantity by the mechanical effect displacement of (as expanding, stretch, moving), is transmitted external influence power by the magnetic field of strong magnet then; By the Machine Design of uniqueness, temperature, strain, pressure or the like physical quantity can be delivered on the fiber grating by magnetic field equally.
But above-mentioned embodiment is exemplary, is to be the restriction that this patent is comprised scope in order better to make those skilled in the art can understand this patent, can not to be interpreted as; So long as according to spirit that this patent discloses done anyly be equal to change or modify, all fall into the scope that this patent comprises.
Claims (1)
1. encapsulating structure that fiber grating seals fully, comprise seal box, it is characterized in that: described seal box internal fixation has a spring girder steel, magnet is fixed on the described spring girder steel by an expansion screw on one, and make the N utmost point of magnet on this or the S utmost point towards the push rod box that is connected with the seal box bottom, the optical fiber that one fiber grating is fixed in the described seal box and the optical fiber that two is connected passes respectively on the described seal box exports, and seals with epoxy glue in the optical fiber outlet; One lower magnet places and places on the push rod in the described push rod box, is with back-moving spring on the push rod, and makes the N utmost point of this lower magnet or the S utmost point N utmost point or the S utmost point over against last magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200764147U CN201464666U (en) | 2009-06-16 | 2009-06-16 | Fully sealed fiber grating packaging structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200764147U CN201464666U (en) | 2009-06-16 | 2009-06-16 | Fully sealed fiber grating packaging structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201464666U true CN201464666U (en) | 2010-05-12 |
Family
ID=42392015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200764147U Expired - Fee Related CN201464666U (en) | 2009-06-16 | 2009-06-16 | Fully sealed fiber grating packaging structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201464666U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103399087A (en) * | 2013-07-20 | 2013-11-20 | 北京航空航天大学 | Packaging method for fiber bragg grating acoustic emission sensor with tunable central wavelength |
| CN104596436A (en) * | 2015-01-12 | 2015-05-06 | 武汉理工大学 | Pasting and fixing device and method for magnetic-type optical fiber and optical grating strain sensor |
| CN105526864A (en) * | 2016-01-21 | 2016-04-27 | 无锡联河光子技术有限公司 | Door-opening state intelligent detection device for optical cable cross-connecting box |
-
2009
- 2009-06-16 CN CN2009200764147U patent/CN201464666U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103399087A (en) * | 2013-07-20 | 2013-11-20 | 北京航空航天大学 | Packaging method for fiber bragg grating acoustic emission sensor with tunable central wavelength |
| CN103399087B (en) * | 2013-07-20 | 2015-04-01 | 北京航空航天大学 | Packaging method for fiber bragg grating acoustic emission sensor with tunable central wavelength |
| CN104596436A (en) * | 2015-01-12 | 2015-05-06 | 武汉理工大学 | Pasting and fixing device and method for magnetic-type optical fiber and optical grating strain sensor |
| CN104596436B (en) * | 2015-01-12 | 2018-05-01 | 武汉理工大学 | Magnetic-type fiber Bragg grating strain sensor pastes fixing device and method |
| CN105526864A (en) * | 2016-01-21 | 2016-04-27 | 无锡联河光子技术有限公司 | Door-opening state intelligent detection device for optical cable cross-connecting box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100512 Termination date: 20170616 |