CN206146543U - High temperature resistant fiber bragg grating sensor ware - Google Patents
High temperature resistant fiber bragg grating sensor ware Download PDFInfo
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- CN206146543U CN206146543U CN201621068021.8U CN201621068021U CN206146543U CN 206146543 U CN206146543 U CN 206146543U CN 201621068021 U CN201621068021 U CN 201621068021U CN 206146543 U CN206146543 U CN 206146543U
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- optical fiber
- grating
- temperature resistant
- sensor
- grating sensor
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Abstract
The utility model discloses a high temperature resistant fiber bragg grating sensor ware, its characterized in that: including optic fibre, optic fibre includes fibre core, covering and coat, write in the grating on the fibre core into, the fiber grating encapsulation is in thin steel pipe, thin steel pipe both ends are adopted the polymerization to glue and are sealed, and steel pipe both sides cover has a screw cap, the screw cap center is provided with the aperture for the optic fibre at grating both ends passes through, the optic fibre tail optical fiber of sensor is provided with loose sleeve pipe, and pine sleeve pipe outside is provided with the polytetrafluoroethylene sleeve pipe. The utility model discloses a high temperature resistant fiber bragg grating sensor ware's temperature toleration is very high, and sensitivity simultaneously is stable, can reduce the influence of external stress.
Description
Technical field
This utility model is related to a kind of fiber-optic grating sensor, particularly a kind of high-temperature resistant optical fiber grating sensor.
Background technology
The temperature control of ordinary optic fibre grating is relatively low, and the sensitivity coefficient of the naked grating of 1550nm wave bands is only 10pm/ °
C, and when measurement temperature is higher, centre wavelength and the temperature variation of fiber grating are presented non-linear relation, it is impossible to meet
High precision measuring temperature demand, and it is currently designed that fiber-optic grating sensor does not have good temperature tolerance, it is impossible to make under certain high temperature
With.Fiber-optic grating sensor is also easy to be affected by stress, and under stress, the centre wavelength of fiber grating can float
Move, to temperature survey error is brought.
Utility model content
Goal of the invention of the present utility model is：For above-mentioned problem, there is provided a kind of affected by force is less, and
And with the fiber-optic grating sensor of good heat-resisting quantity.
The technical solution adopted in the utility model is as follows：A kind of high-temperature resistant optical fiber grating sensor of this utility model, including
Optical fiber, the optical fiber includes fibre core, covering and coat；Grating is write on the fibre core；The optical fiber Bragg grating encapsulation is in thin steel
Guan Zhong, the fine steel tube two ends are sealed using polymeric gel, and fine steel tube both sides are cased with screw cap, the screw cap center
Aperture is provided with, the optical fiber for grating two ends passes through；The optical fiber pigtail of the sensor is provided with Loose tube, outside Loose tube
It is provided with teflon sleeve.
A kind of high-temperature resistant optical fiber grating sensor of this utility model, the coat is double coatings, and internal layer is coarsening-free
Nickel coating is learned, outer layer is hybrid coating.
A kind of high-temperature resistant optical fiber grating sensor of this utility model, the internal diameter of the fine steel tube is 3mm, and pipe thickness is
0.6mm, length is 48mm, a diameter of 1.0mm of the Loose tube.
In sum, as a result of above-mentioned technical proposal, the beneficial effects of the utility model are：With existing optical fiber light
Gate sensor is compared, and optical fiber Bragg grating encapsulation in fine steel tube, can be avoided fiber grating by the structure of this utility model sensor
Affected by external stress, while the double coatings for arranging, can to greatest extent improve the temperature resistance of sensor, so that optical fiber
Grating can be used at high temperature, with heat-resisting quantity.
Description of the drawings
Fig. 1 is this utility model optical fiber grating structure schematic diagram；
Labelling in figure：1 is fibre core, and 2 is covering, and 3 is coat, and 4 is grating.
Fig. 2 is the structural representation of this utility model high-temperature resistant optical fiber grating sensor；
Labelling in figure：5 is fine steel tube, and 6 is screw cap, and 7 is optical fiber.
Specific embodiment
Below in conjunction with the accompanying drawings, this utility model is described in detail.
In order that the purpose of this utility model, technical scheme and advantage become more apparent, below in conjunction with accompanying drawing and enforcement
Example, is further elaborated to this utility model.It should be appreciated that specific embodiment described herein is only to explain this
Utility model, is not used to limit this utility model.
As shown in figure 1, a kind of high-temperature resistant optical fiber grating sensor of this utility model, including optical fiber 7, the optical fiber includes fine
Core 1, covering 2 and coat 3；Grating 4 is write on the fibre core；The optical fiber Bragg grating encapsulation in fine steel tube 5, the fine steel tube
5 two ends are sealed using polymeric gel, and the both sides of fine steel tube 5 are cased with screw cap 6, and the screw cap 6 is provided centrally with aperture,
Optical fiber 7 for the two ends of grating 4 passes through；The tail optical fiber of optical fiber 7 of the sensor is provided with Loose tube, is provided with outside Loose tube poly-
Tetrafluoroethene sleeve pipe.
A kind of high-temperature resistant optical fiber grating sensor of this utility model, the coat 3 is double coatings, and internal layer is coarsening-free
Nickel coating is learned, outer layer is hybrid coating.
A kind of high-temperature resistant optical fiber grating sensor of this utility model, the preparation method of described pair of coating is：
Step 1：Taking-up after the part that sensor is imbedded in composite is soaked in acetone, soaks the coating meeting of part
Automatic-falling, removes the coating ， Liao for coming off and does standby；
Step 2：Coating will be peelled off carries out coarsening-free chemical nickel plating operation；
Step 3：Dry after nickel plating, using optical fiber coating machine secondary coating is carried out, coating is hybrid coating.
A kind of high-temperature resistant optical fiber grating sensor of this utility model, the internal diameter of the fine steel tube is 3mm, and pipe thickness is
0.6mm, length is 48mm, a diameter of 1.0mm of the Loose tube.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit this utility model
Any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in this utility model
Protection domain within.
Claims (3)
1. a kind of high-temperature resistant optical fiber grating sensor, it is characterised in that：Including optical fiber, the optical fiber includes fibre core, covering and painting
Coating；Grating is write on the fibre core；The optical fiber Bragg grating encapsulation in fine steel tube, using polymeric gel entered by the fine steel tube two ends
Row sealing, fine steel tube both sides are cased with screw cap, and the screw cap is provided centrally with aperture, and the optical fiber for grating two ends leads to
Cross；The optical fiber pigtail of the sensor is provided with Loose tube, and teflon sleeve is provided with outside Loose tube.
2. high-temperature resistant optical fiber grating sensor as claimed in claim 1, it is characterised in that：The coat is double coatings, interior
Layer is coarsening-free chemical Ni-plating layer, and outer layer is hybrid coating.
3. high-temperature resistant optical fiber grating sensor as claimed in claim 1, it is characterised in that：The internal diameter of the fine steel tube is 3mm,
Pipe thickness is 0.6mm, and length is 48mm, a diameter of 1.0mm of the Loose tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621068021.8U CN206146543U (en) | 2016-09-21 | 2016-09-21 | High temperature resistant fiber bragg grating sensor ware |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621068021.8U CN206146543U (en) | 2016-09-21 | 2016-09-21 | High temperature resistant fiber bragg grating sensor ware |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206146543U true CN206146543U (en) | 2017-05-03 |
Family
ID=58619618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621068021.8U Active CN206146543U (en) | 2016-09-21 | 2016-09-21 | High temperature resistant fiber bragg grating sensor ware |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206146543U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109211797A (en) * | 2018-11-01 | 2019-01-15 | 北京航空航天大学 | A kind of fiber bragg grating temperature sensor with the anti-axial strain interference of temperature-compensating |
-
2016
- 2016-09-21 CN CN201621068021.8U patent/CN206146543U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109211797A (en) * | 2018-11-01 | 2019-01-15 | 北京航空航天大学 | A kind of fiber bragg grating temperature sensor with the anti-axial strain interference of temperature-compensating |
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