CN201555671U - Phial-type optical fiber temperature photoelectric sensor unit - Google Patents
Phial-type optical fiber temperature photoelectric sensor unit Download PDFInfo
- Publication number
- CN201555671U CN201555671U CN2009202789473U CN200920278947U CN201555671U CN 201555671 U CN201555671 U CN 201555671U CN 2009202789473 U CN2009202789473 U CN 2009202789473U CN 200920278947 U CN200920278947 U CN 200920278947U CN 201555671 U CN201555671 U CN 201555671U
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- China
- Prior art keywords
- optical fiber
- temperature
- heating component
- phial
- thermometer
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a temperature sensor, in particularly to a phial-type optical fiber temperature photoelectric sensor unit which is used for monitoring hydraulic architecture such as a dam body, a cushion layer, a water-retaining wall and leakage of water diversion project. The phial-type optical fiber temperature photoelectric sensor unit comprises a protective shell; a protective steel tube is arranged in the protective shell; a heat-shrinkable tube is arranged in the protective steel tube; both ends of the heat-shrinkable tube are respectively connected with an armored optical cable through an optical fiber, and the armored optical cable is connected with an optical fiber thermometer which is provided with a heating component; the heating component is connected with the heating component at the other end through a conducting wire; a copper cladding is arranged on the outer surface of the armored optical cable, and a protective tail sleeve is arranged at the outer surface of the copper cladding; the optical fiber thermometer adopts an FBG temperature sensor; the heating component adopts a PTC electrical heating component. The phial-type optical fiber temperature photoelectric sensor unit meets waterproof performance, pressure resistance and other requirements in hydraulic architecture, is durable and is easy to operate and install, and realizes positioned temperature measuring and good control of measuring point.
Description
Technical field
The utility model is a kind of temperature sensor, particularly a kind ofly is used to monitor waterwork, as the thermometer bulb formula fiber optic temperature photoelectric sensing unit of dam dam body, bed course, waterwall, diversion works seepage.
Background technology
For industries such as water conservancy and hydropower, buildings, real-time safety monitoring is very important., be a big event in the safety monitoring wherein to the temperature monitoring of engineering construction environment.Abominable and complicacy in view of the engineering construction environment, the existing all temps sensor that is laid in the hydro-structure, relatively fragile, survival rate is not high, lost efficacy than being easier in work progress and in the complex environment of living in, cause the temperature signal of this sensing unit to receive, even influence the signals collecting of whole sensing link.
Summary of the invention
The purpose of this utility model is in order to overcome the defective that existing temperature sensor lost efficacy and causes this temperature signal to receive easily, to invent a kind of thermometer bulb formula fiber optic temperature photoelectric sensing unit based on Fiber Bragg Grating technology.
The purpose of this utility model realizes as follows: described thermometer bulb formula fiber optic temperature photoelectric sensing unit, comprise a protecting sheathing, be provided with a protection steel pipe in the protecting sheathing, be provided with heat-shrink tube in the protection steel pipe, the two ends of heat-shrink tube respectively connect an armouring optical cable by optical fiber, the armouring optical cable is connected with fibre optic thermometer, and fibre optic thermometer is provided with heater element, and heater element is connected with the heater element of the other end by lead; The outside of armouring optical cable is provided with the copper coating layer, and the outside of copper coating layer is provided with protection tail cover.
Described fibre optic thermometer adopts the FBG temperature sensor.
Described heater element adopts the PTC heating.
Good effect of the present utility model is as follows: the utility model is applied to fiber grating in the large-scale hydraulic building structure as sensing network, optical fiber grating sensing network and electric heating heating element are combined into independently cell cube use, requirements such as the waterproof in waterwork, used, resistance to compression have been satisfied, durable, easy operating is installed; Realized the location thermometric, measurement point obtains good control.
Description of drawings
Fig. 1 is the utility model structural drawing
Among the figure: 1 protecting sheathing, 2 protection steel pipes, 3 heat-shrink tubes
4 optical fiber, 5 armouring optical cables, 6 fibre optic thermometers
7 heater elements, 8 leads, 9 bronze medal coating layers
10 protection tail covers
Embodiment
As shown in Figure 1, described thermometer bulb formula fiber optic temperature photoelectric sensing unit, comprise a protecting sheathing 1, be provided with a protection steel pipe 2 in the protecting sheathing 1, be provided with heat-shrink tube 3 in the protection steel pipe 2, the two ends of heat-shrink tube 3 respectively connect an armouring optical cable 5 by optical fiber 4, and armouring optical cable 5 is connected with fibre optic thermometer 6, fibre optic thermometer 6 is provided with heater element 7, and heater element 7 is connected with the heater element 7 of the other end by lead 8; The outside of armouring optical cable 5 is provided with copper coating layer 9, and the outside of copper coating layer 9 is provided with protection tail cover 10.
Described fibre optic thermometer 6 adopts the FBG temperature sensor.FBG temperature sensor temperature-measuring range is-50 ℃ ~ 150 ℃, measuring accuracy is ± 0.5 ℃, and 0.1 ℃ of thermometric resolution, physical dimension are Φ 11 * 110mm, adopt fiber grating as temperature element, be connected in series formation sensing link mutually by optical fiber between a plurality of temperature elements.
Described heater element 7 adopts the PTC heating.The PTC heating plays sensitization, promptly the temperature field local anomaly of concentrating seepage flow to cause is highlighted, and is convenient to identification, and to guarantee measuring value accuracy, the PTC heater element has the characteristics of automatic constant-temperature, does not need temperature control system, and PTC is directly switched on to get final product.
The utility model utilizes liquid after the seepage temperature drop of surrounding environment to be monitored the seepage situation of waterwork each point, during concrete the application, be that a plurality of units in series are integral the formation sensing network, then it is arranged on the position that waterwork need monitor, signal finally carries out demodulation by fiber grating signal analysis (FBG) demodulator, shows Monitoring Data and result by corresponding software then.With power station dam dam body is example, at dam body temperature and storehouse water temperature characteristics, operation electric heating heater element, temperature stabilization is increased to begins observation behind the certain value, by controllable electric power control testing district FBG temperature rise, have the contiguous FBG of leakage to heat up 4～6 ℃ during observation, the ne-leakage place heat up 10 ℃～more than 15 ℃, temperature field distortion due to the seepage is amplified, the seepage low-temperature space is come out from the even districution temperature field saliency of normal seepage flow correspondence.
Claims (3)
1. thermometer bulb formula fiber optic temperature photoelectric sensing unit, it is characterized in that: described thermometer bulb formula fiber optic temperature photoelectric sensing unit, comprise a protecting sheathing, be provided with a protection steel pipe in the protecting sheathing, be provided with heat-shrink tube in the protection steel pipe, the two ends of heat-shrink tube respectively connect an armouring optical cable by optical fiber, and the armouring optical cable is connected with fibre optic thermometer, fibre optic thermometer is provided with heater element, and heater element is connected with the heater element of the other end by lead; The outside of armouring optical cable is provided with the copper coating layer, and the outside of copper coating layer is provided with protection tail cover.
2. thermometer bulb formula fiber optic temperature photoelectric sensing according to claim 1 unit is characterized in that: described fibre optic thermometer adopts the FBG temperature sensor.
3. thermometer bulb formula fiber optic temperature photoelectric sensing according to claim 1 unit is characterized in that: described heater element adopts the PTC heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202789473U CN201555671U (en) | 2009-11-13 | 2009-11-13 | Phial-type optical fiber temperature photoelectric sensor unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202789473U CN201555671U (en) | 2009-11-13 | 2009-11-13 | Phial-type optical fiber temperature photoelectric sensor unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201555671U true CN201555671U (en) | 2010-08-18 |
Family
ID=42615358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202789473U Expired - Fee Related CN201555671U (en) | 2009-11-13 | 2009-11-13 | Phial-type optical fiber temperature photoelectric sensor unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201555671U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103512593A (en) * | 2012-06-20 | 2014-01-15 | 山东金煜电子科技有限公司 | Embedded fiber grating sensor and manufacturing method |
| CN112415683A (en) * | 2020-11-06 | 2021-02-26 | 烽火通信科技股份有限公司 | Temperature sensing optical cable |
-
2009
- 2009-11-13 CN CN2009202789473U patent/CN201555671U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103512593A (en) * | 2012-06-20 | 2014-01-15 | 山东金煜电子科技有限公司 | Embedded fiber grating sensor and manufacturing method |
| CN103512593B (en) * | 2012-06-20 | 2015-08-12 | 山东金煜电子科技有限公司 | A kind of Rules for Embedded FBG Sensors and method for making |
| CN112415683A (en) * | 2020-11-06 | 2021-02-26 | 烽火通信科技股份有限公司 | Temperature sensing optical cable |
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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: 20100818 Termination date: 20181113 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |