CN204758164U - Fiber grating stainless steel temperature sensor - Google Patents
Fiber grating stainless steel temperature sensor Download PDFInfo
- Publication number
- CN204758164U CN204758164U CN201520507453.3U CN201520507453U CN204758164U CN 204758164 U CN204758164 U CN 204758164U CN 201520507453 U CN201520507453 U CN 201520507453U CN 204758164 U CN204758164 U CN 204758164U
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- Prior art keywords
- stainless steel
- grating
- capillary
- temperature
- fiber
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- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 83
- 239000010935 stainless steel Substances 0.000 title claims abstract description 83
- 239000000835 fiber Substances 0.000 title claims abstract description 19
- 230000001681 protective effect Effects 0.000 claims abstract description 12
- 238000010276 construction Methods 0.000 claims abstract description 10
- 239000003365 glass fiber Substances 0.000 claims abstract description 10
- 238000013461 design Methods 0.000 claims abstract description 7
- 230000035945 sensitivity Effects 0.000 claims abstract description 6
- 239000011152 fibreglass Substances 0.000 claims abstract description 4
- 239000013307 optical fiber Substances 0.000 claims description 13
- 239000003292 glue Substances 0.000 claims description 10
- 239000000853 adhesive Substances 0.000 claims description 9
- 230000001070 adhesive effect Effects 0.000 claims description 9
- 239000010963 304 stainless steel Substances 0.000 claims description 6
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 claims description 6
- 239000004642 Polyimide Substances 0.000 claims description 3
- 238000004026 adhesive bonding Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229920001721 polyimide Polymers 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 4
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 241001269238 Data Species 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002463 transducing effect Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The utility model discloses a fiber grating stainless steel temperature sensor, including stainless steel protective case, stainless steel capillary, optic fibre and grating, glass fiber protective case, its characterized in that: the grating is the temperature grating, temperature grating installation is fixed in the stainless steel capillary and is stretch -draw state in advance, and stainless steel capillary overcoat has a stainless steel protection tube, stainless steel capillary both ends guarantee through the fixed grating both ends of sticky mode that the grating is in stretch -draw state in advance, the inner wall at stainless steel protective case is fixed through sticky mode in stainless steel capillary outer end, stainless steel protective case both ends are through sticky mode fixed fiber glass fiber protective case, be equipped with sensitivity and the line type degree that the elastic construction slows down the pulling force of stainless steel capillary and strengthens this temperature grating in the middle of the stainless steel capillary. The utility model discloses simple structure designs small and exquisitely, and convenient to use has very high practical value in civil engineering structure temperature monitoring.
Description
Technical field
The utility model relates to a kind of temperature sensor, particularly relates to and is applied in the fiber-optical grating temperature sensor that civil engineering surveying structure temperature is measured and Sensor Temperature Compensation is measured.
Technical background
At present, temperature sensor technology based on fiber grating principle is rapidly developed, fiber grating has advantages such as preventing electromagnetic interference (EMI), non-electric detection, anti-lightning, and fiber-optical grating temperature sensor is widely applied in measurement is as civil engineering structure temperature such as bridge, dam, tunnel and heavy constructions.
Due to field engineering construction circumstance complication, when running into inclement weather, structure temperature change is fast, require that temperature sensor must possess good heat conductivity to measure the change of structure temperature in real time, this sensor construction is novel in design, the design of stainless steel capillary elastic construction ensures measuring accuracy, and inside and outside two-layer stainless-steel tube design can realize temperature conduction fast, ensure that temperature survey does not have hysteresis quality.
Utility model content
The utility model provides the delayed and sensitivity for existing temperature survey heat transfer technology not enough, proposes a kind of fiber grating stainless steel temperature sensor.
The technical solution adopted in the utility model is as follows:
A kind of fiber grating stainless steel temperature sensor, comprises stainless steel protection sleeve pipe, stainless steel capillary, optical fiber and grating, glass fibre protective casing.Described grating is temperature grating, described temperature grating is fixed in stainless steel capillary also in pre-tensile state, stainless steel capillary overcoat has stainless steel protection pipe, and described stainless steel capillary two ends, by adhesive means fixed grating two ends, guarantee that grating is in pre-tensile state; Described stainless steel capillary outer end is fixed on stainless steel protection internal surface of sleeve pipe by adhesive means, and described stainless steel protection sleeve pipe two ends are by adhesive means fixed fiber glass fibre protective casing; Be provided with elastic construction in the middle of described stainless steel capillary slow down the pulling force of stainless steel capillary and strengthen sensitivity and the line style degree of this temperature grating.
Described stainless steel capillary two ends are provided with semi-circular recesses, and when groove design is convenient to gluing grating two ends, 704 glue can fully contact with grating two ends, and protection grating two ends point of fixity does not come off in prolonged application.
Described grating adopts the polyimide optical fiber fabrication of grid region length 10mm.
Described stainless steel capillary is made by 304 stainless-steel tubes of length 30mm, external diameter 0.7mm, internal diameter 0.3mm, and two ends are designed with the semi-circular recesses of long 5mm.
Described stainless steel protection pipe is made by 304 stainless-steel tubes of length 60mm, external diameter 3.5mm, internal diameter 1.5mm.
Described tail optical fiber sleeve pipe by length be 1000mm, external diameter be 2mm, internal diameter 1mm insulation high-temperature-resistant glass fiber material make.
In an assembling process, first step assembling transducing part, first optical fiber and grating are passed stainless steel capillary, raster center is displaced to feature structure side, grating two ends with 353ND glue in stainless steel capillary groove, axle center is between two parties and in pre-tensile state, and grating should stretch-draw 1.5nm in advance, fixes and dries.
Second step is enclosed within by stainless steel capillary in outer stainless steel protection pipe between two parties, and stainless steel capillary two ends semi-circular recesses is adhesively fixed with 704, during cementation, guarantees that stainless steel capillary axle center is placed in the middle.
3rd step is that glass fibre sleeve packs in stainless steel protection pipe by two ends, and with 353ND glue cementation, during cementation, can not there be bubble at cementation place.
After assembling, temperature wavelength calibration is carried out to fiber-optical grating temperature sensor.During temperature calibration, require from-20 DEG C to 85 DEG C, heat up and lower the temperature and respectively do twice, every 5 DEG C of record primary reflection long datas.After calibration terminates, calculate the temperature coefficient of this sensor.
In project installation uses, according to different application scenarios, this sensor can be bundled on measured object with band, or the mode be screwed is arranged on measured object surface.
The utility model structure is simple, assembling, easy for installation, effectively improves thermometric precision and sensitivity, has very high practical value in civil engineering structure temperature monitoring.
Accompanying drawing explanation
Fig. 1 is principle schematic of the present utility model; In figure: 1: tail optical fiber sleeve pipe, 2:353ND glue, 3: stainless steel protection pipe, 4: stainless steel capillary, 5: elastic construction, 6: semi-circular recesses, 7:704 glue, 8: grating, 9: optical fiber.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, the utility model embodiment is described in detail.
As shown in Figure 1, a kind of fiber grating stainless steel temperature sensor, comprises stainless steel protection sleeve pipe 3, stainless steel capillary 4, optical fiber 9 and grating 8, glass fibre protective casing 1.Described grating 8 is temperature grating, described temperature grating is fixed in stainless steel capillary 4 also in pre-tensile state, stainless steel capillary 4 overcoat has stainless steel protection pipe, and described stainless steel capillary 4 two ends, by adhesive means fixed grating two ends, guarantee that grating 8 is in pre-tensile state; Described stainless steel capillary 4 outer end is fixed on stainless steel protection sleeve pipe 3 inwall by adhesive means, and described stainless steel protection sleeve pipe 3 two ends are by adhesive means fixed fiber glass fibre protective casing 1; Be provided with elastic construction 5 in the middle of described stainless steel capillary 4 slow down the pulling force of stainless steel capillary 4 and strengthen sensitivity and the line style degree of this temperature grating.
Described stainless steel capillary 4 two ends are provided with semi-circular recesses 6, and when groove design is convenient to gluing grating two ends, 704 glue 7 can fully contact with grating 8 two ends, and protection grating 8 two ends point of fixity does not come off in prolonged application.
Described grating 8 adopts the polyimide optical fiber fabrication of grid region length 10mm.
Described stainless steel capillary 4 is made by 304 stainless-steel tubes of length 30mm, external diameter 0.7mm, internal diameter 0.3mm, and two ends are designed with the semi-circular recesses 6 of long 5mm.
Described stainless steel protection pipe 3 is made by 304 stainless-steel tubes of length 60mm, external diameter 3.5mm, internal diameter 1.5mm.
Described tail optical fiber sleeve pipe 1 by length be 1000mm, external diameter be 2mm, internal diameter 1mm insulation high-temperature-resistant glass fiber material make.
In an assembling process, first step assembling transducing part, first optical fiber 9 and grating 8 are passed stainless steel capillary 4, by grating 8 off-centring to elastic construction 5 side, grating 8 two ends with 353ND glue in stainless steel capillary 4 semi-circular recesses 6, axle center is between two parties and in pre-tensile state, and grating 8 should stretch-draw 1.5nm in advance, fixes and dries.
Second step is enclosed within by stainless steel capillary 4 in outer stainless steel protection pipe 3 between two parties, stainless steel capillary 4 two ends semi-circular recesses 6 704 glue 7 cementations, during cementation, guarantees that stainless steel capillary 4 axle center is placed in the middle.
3rd step is that glass fibre tail optical fiber sleeve pipe 1 packs in stainless steel protection pipe 3 by two ends, and with 353ND glue 2 cementation, during cementation, can not there be bubble at cementation place.
After assembling, temperature wavelength calibration is carried out to fiber-optical grating temperature sensor.During temperature calibration, require from-20 DEG C to 85 DEG C, heat up and lower the temperature and respectively do twice, every 5 DEG C of record primary reflection long datas.After calibration terminates, calculate the temperature coefficient of this sensor.
In project installation uses, according to different application scenarios, this sensor can be bundled on measured object with band, or the mode be screwed is arranged on measured object surface.
The foregoing is only better embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (6)
1. a fiber grating stainless steel temperature sensor, comprise stainless steel protection sleeve pipe, stainless steel capillary, optical fiber and grating, glass fibre protective casing, it is characterized in that: described grating is temperature grating, described temperature grating is fixed in stainless steel capillary also in pre-tensile state, stainless steel capillary overcoat has stainless steel protection pipe, described stainless steel capillary two ends, by adhesive means fixed grating two ends, guarantee that grating is in pre-tensile state; Described stainless steel capillary outer end is fixed on stainless steel protection internal surface of sleeve pipe by adhesive means, and described stainless steel protection sleeve pipe two ends are by adhesive means fixed fiber glass fibre protective casing; Be provided with elastic construction in the middle of described stainless steel capillary slow down the pulling force of stainless steel capillary and strengthen sensitivity and the line style degree of this temperature grating.
2. a kind of fiber grating stainless steel temperature sensor according to claim 1; it is characterized in that: described stainless steel capillary two ends are provided with semi-circular recesses; when groove design is convenient to gluing grating two ends; 704 glue can fully contact with grating two ends, and protection grating two ends point of fixity does not come off in prolonged application.
3. a kind of fiber grating stainless steel temperature sensor according to claim 1, is characterized in that: described grating adopts the polyimide optical fiber fabrication of grid region length 10mm.
4. a kind of fiber grating stainless steel temperature sensor according to claim 1, is characterized in that: described stainless steel capillary is made by 304 stainless-steel tubes of length 30mm, external diameter 0.7mm, internal diameter 0.3mm, and two ends are designed with the semi-circular recesses of long 5mm.
5. a kind of fiber grating stainless steel temperature sensor according to claim 1, is characterized in that: described stainless steel protection pipe is made by 304 stainless-steel tubes of length 60mm, external diameter 3.5mm, internal diameter 1.5mm.
6. a kind of fiber grating stainless steel temperature sensor according to claim 1, is characterized in that: described glass fibre protective casing by length be 1000mm, external diameter be 2mm, internal diameter 1mm insulation high-temperature-resistant glass fiber material make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520507453.3U CN204758164U (en) | 2015-07-15 | 2015-07-15 | Fiber grating stainless steel temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520507453.3U CN204758164U (en) | 2015-07-15 | 2015-07-15 | Fiber grating stainless steel temperature sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204758164U true CN204758164U (en) | 2015-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520507453.3U Expired - Fee Related CN204758164U (en) | 2015-07-15 | 2015-07-15 | Fiber grating stainless steel temperature sensor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107420391A (en) * | 2017-03-30 | 2017-12-01 | 江苏骏龙光电科技股份有限公司 | A kind of mounting process suitable for bridge cable fiber-optic grating sensor |
| CN110940284A (en) * | 2019-11-13 | 2020-03-31 | 武汉地震工程研究院有限公司 | Manufacturing method of embedded fiber bragg grating reinforcement corrosion sensor |
| CN113125040A (en) * | 2021-04-12 | 2021-07-16 | 武汉理工大学 | Anti-interference super-response FBG thermometer and measuring method thereof |
| CN113252209A (en) * | 2021-04-22 | 2021-08-13 | 北京航天控制仪器研究所 | High-temperature-resistant quick-response fiber grating temperature sensor implanted into vehicle brake |
| CN114935115A (en) * | 2022-06-20 | 2022-08-23 | 武汉理工大学 | Integrated temperature measurement structure for fluid pipeline and packaging method |
-
2015
- 2015-07-15 CN CN201520507453.3U patent/CN204758164U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107420391A (en) * | 2017-03-30 | 2017-12-01 | 江苏骏龙光电科技股份有限公司 | A kind of mounting process suitable for bridge cable fiber-optic grating sensor |
| CN110940284A (en) * | 2019-11-13 | 2020-03-31 | 武汉地震工程研究院有限公司 | Manufacturing method of embedded fiber bragg grating reinforcement corrosion sensor |
| CN110940284B (en) * | 2019-11-13 | 2021-08-03 | 武汉地震工程研究院有限公司 | Manufacturing method of embedded fiber bragg grating reinforcement corrosion sensor |
| CN113125040A (en) * | 2021-04-12 | 2021-07-16 | 武汉理工大学 | Anti-interference super-response FBG thermometer and measuring method thereof |
| CN113252209A (en) * | 2021-04-22 | 2021-08-13 | 北京航天控制仪器研究所 | High-temperature-resistant quick-response fiber grating temperature sensor implanted into vehicle brake |
| CN114935115A (en) * | 2022-06-20 | 2022-08-23 | 武汉理工大学 | Integrated temperature measurement structure for fluid pipeline and packaging method |
| CN114935115B (en) * | 2022-06-20 | 2023-01-03 | 武汉理工大学 | Integrated temperature measurement structure for fluid pipeline and packaging method |
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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 |
Granted publication date: 20151111 Termination date: 20160715 |
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| CF01 | Termination of patent right due to non-payment of annual fee |