CN201188036Y - High-temperature fibre-optical grating temperature sensor - Google Patents
High-temperature fibre-optical grating temperature sensor Download PDFInfo
- Publication number
- CN201188036Y CN201188036Y CNU2008200205389U CN200820020538U CN201188036Y CN 201188036 Y CN201188036 Y CN 201188036Y CN U2008200205389 U CNU2008200205389 U CN U2008200205389U CN 200820020538 U CN200820020538 U CN 200820020538U CN 201188036 Y CN201188036 Y CN 201188036Y
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- temperature
- fiber grating
- optical fiber
- temperature measuring
- measuring tube
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Abstract
The utility model provides a high temperature optical fiber grating temperature sensor. The sensor comprises an optical fiber grating, a temperature measuring tube and brackets. The temperature measuring tube is of a U shape, two straight sections of the temperature measuring tube are internally provided with the brackets, the optical fiber grating is arranged in the temperature measuring tube, the both ends of the optical fiber grating penetrate out of the brackets, the both ends of the temperature measuring tube are both connected with a bushing by fastening joints, the bushing is internally provided with a protective sleeve, the other end of the bushing is connected with an armored optical cable by another fastening joint, the optical fiber grating is joined by fusion with optical fibers of the armored optical cable together in the protective sleeve, and the protective sleeve is packed by high temperature oxidation-resistivity high strength insulating materials. The utility model takes the high temperature optical fiber grating as a sensing part, and generates a uniform temperature gradient from the outside diameter of the temperature measuring tube to the center of the temperature measuring tube, thereby enhancing the temperature measuring upper limit of the optical fiber grating, being convenient to use, and lightening the labor strength of real time on-line temperature detection.
Description
Technical field
The utility model relates to a kind of fiber-optical grating temperature sensor with high-temperature material encapsulation, and being mainly used in temperature-measuring range 0-450 ℃, thermometric environment is the long-term monitoring in real time of multi-point temp of high pressure, high-intensity magnetic field.Belong to the temperature sensor technical field.
Background technology
In the Aluminum Electrolysis Production process, the temperature of significant points such as the cathode steel bar of cell vessel needs monitoring in real time.Existing monitoring method is to adopt hand-held infrared thermography instrument to measure, and the shortcoming of this method is to need artificial circulation to detect.There is more than 100 electrolytic tank in a medium-sized factory, and each electrolytic tank has up to a hundred temperature detecting point, and labor strength is big, and sense cycle is long, and real-time is poor, and error is big.
Summary of the invention
The deficiency that the utility model exists at existing real-time online temperature detection technology, a kind of easy to use, simple high temperature fiber-optical grating temperature sensor of connection is provided, this sensor adopts the high temperature fiber grating to do sensing element, with high temperature resistant resistance to oxidation insulating material encapsulation, be particularly suitable for cell vessel temperature detection in the Aluminum Electrolysis Production process.
The technical solution adopted in the utility model is:
The high temperature fiber-optical grating temperature sensor comprises fiber grating, temperature tube and support; temperature tube is the U type; in two straight section support is housed; fiber grating is arranged in the temperature tube; the two ends of fiber grating are by passing in the support; the two ends of temperature tube all are connected with sleeve pipe by fastening; be provided with protective sleeve in the sleeve pipe; the other end of sleeve pipe is connected with the armouring optical cable by the another one fastening; fiber grating in protective sleeve with the fused fiber splice of armouring optical cable together, protective sleeve is with the encapsulation of high temperature resistance to oxidation high-strength insulating material.
Fiber grating is installed in the temperature tube by a support, has guaranteed the shaft core position of fiber grating at temperature tube.When measuring high temperature, produce an even temperature gradient from high temperature resistant temperature tube external diameter to the temperature tube center, thereby improved the thermometric upper limit of fiber grating.The joint design at temperature tube two ends makes the two ends of fiber grating be non-case of bending, and joint length can be regulated along temperature tube, makes fiber grating keep linear position after the connection.When measuring temperature, can constitute a temperature survey network of measuring a hundreds of point with some optical fiber, be particularly suitable for the temperature survey of cell vessel cathode steel bar in the Aluminum Electrolysis Production process.
The utility model is a sensing element with the high temperature fiber grating, produces an even temperature gradient from the temperature tube external diameter to the temperature tube center, has improved the thermometric upper limit of fiber grating, and is easy to use, alleviated the labour intensity of real-time online temperature detection.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 connects synoptic diagram in succession for sensor string of the present utility model.
Among the figure: 1 temperature tube, 2 sensor fibre light barrier holders, 3 fastenings, 4 sleeve pipes, 5 protective sleeves, 6 tighten packing ring, 7 armouring optical cables, 8 fiber gratings, 9 sensors, 10 trip bolts, 11 cathode steel bars, 12 sensor fixed supports.
Embodiment
As shown in Figure 1.High temperature fiber-optical grating temperature sensor of the present utility model mainly comprises fiber grating 8, temperature tube 1, support 2, sleeve pipe 4, protective sleeve 5 and armouring optical cable 7.Fiber grating 8 penetrates the support 2 of the two ends straight-line segment that is arranged in temperature tube 1, cuts off after one section fiber grating is reserved at the two ends of temperature tube 1.The two ends of temperature tube 1 are connected with fastening 3; be provided with in the fastening 3 and tighten packing ring 6; be connected with sleeve pipe 4 in the fastening 3; be provided with protective sleeve 5 in the sleeve pipe 4; the other end of sleeve pipe 4 is equipped with armouring optical cable 7 by the another one fastening, and the fused fiber splice of fiber grating and armouring optical cable 7 together.Maintenance optical fiber is straight line, and the assembling of sensor is finished in the fastening of fastening two ends.
Single high temperature fiber-optical grating temperature sensor can adopt the serial connection mode to connect, and as shown in Figure 2, the serial connection interface is one and guarantees that optical fiber keeps the tube-like interface of straight line.Some fiber-optical grating temperature sensors connect by high temperature optical fiber serial connection, can be implemented in a plurality of fiber-optical grating temperature sensors of serial connection on the optical fiber.When measuring temperature, can constitute a temperature survey network of measuring a hundreds of point with some optical fiber, be particularly suitable for the temperature survey of cell vessel cathode steel bar in the Aluminum Electrolysis Production process, as shown in Figure 2, with trip bolt 10 and fixed support 12 single-sensor 9 that is serially connected is fixed on the cathode steel bar 11 of cell vessel.
Claims (1)
1. high temperature fiber-optical grating temperature sensor; comprise fiber grating, temperature tube and support; it is characterized in that: temperature tube is the U type; in two straight section support is housed; fiber grating is arranged in the temperature tube; the two ends of fiber grating are by passing in the support; the two ends of temperature tube all are connected with sleeve pipe by fastening; be provided with protective sleeve in the sleeve pipe; the other end of sleeve pipe is connected with the armouring optical cable by the another one fastening; fiber grating in protective sleeve with the fused fiber splice of armouring optical cable together, protective sleeve is with the encapsulation of high temperature resistance to oxidation high-strength insulating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200205389U CN201188036Y (en) | 2008-03-27 | 2008-03-27 | High-temperature fibre-optical grating temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200205389U CN201188036Y (en) | 2008-03-27 | 2008-03-27 | High-temperature fibre-optical grating temperature sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201188036Y true CN201188036Y (en) | 2009-01-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200205389U Expired - Fee Related CN201188036Y (en) | 2008-03-27 | 2008-03-27 | High-temperature fibre-optical grating temperature sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201188036Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401702A (en) * | 2010-09-10 | 2012-04-04 | 北京蔚蓝仕科技有限公司 | Temperature sensing probe for fiber bragg grating |
| CN102401700A (en) * | 2010-09-10 | 2012-04-04 | 北京蔚蓝仕科技有限公司 | Single-end temperature measurement sensor for fiber Bragg grating |
| CN102834686A (en) * | 2009-12-15 | 2012-12-19 | 哈茨有限公司 | Thermal sensing for material processing assemblies |
| CN103900732A (en) * | 2014-04-10 | 2014-07-02 | 刘信 | Electric reactor fiber grating temperature measuring device |
| CN110617798A (en) * | 2019-10-16 | 2019-12-27 | 辽宁大学 | Monitoring tube structure for tailing dam infiltration line and distribution thereof |
-
2008
- 2008-03-27 CN CNU2008200205389U patent/CN201188036Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102834686A (en) * | 2009-12-15 | 2012-12-19 | 哈茨有限公司 | Thermal sensing for material processing assemblies |
| CN102401702A (en) * | 2010-09-10 | 2012-04-04 | 北京蔚蓝仕科技有限公司 | Temperature sensing probe for fiber bragg grating |
| CN102401700A (en) * | 2010-09-10 | 2012-04-04 | 北京蔚蓝仕科技有限公司 | Single-end temperature measurement sensor for fiber Bragg grating |
| CN103900732A (en) * | 2014-04-10 | 2014-07-02 | 刘信 | Electric reactor fiber grating temperature measuring device |
| CN110617798A (en) * | 2019-10-16 | 2019-12-27 | 辽宁大学 | Monitoring tube structure for tailing dam infiltration line and distribution thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shandong Star Electric Power Technology Co.,Ltd. Assignor: Shandong University Contract record no.: 2010370000276 Denomination of utility model: High-temperature fibre-optical grating temperature sensor Granted publication date: 20090128 License type: Exclusive License Record date: 20100521 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090128 Termination date: 20120327 |