CN201653585U - Tubular type optical fiber grating temperature sensor with single end fixed - Google Patents
Tubular type optical fiber grating temperature sensor with single end fixed Download PDFInfo
- Publication number
- CN201653585U CN201653585U CN2010202030386U CN201020203038U CN201653585U CN 201653585 U CN201653585 U CN 201653585U CN 2010202030386 U CN2010202030386 U CN 2010202030386U CN 201020203038 U CN201020203038 U CN 201020203038U CN 201653585 U CN201653585 U CN 201653585U
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- China
- Prior art keywords
- optical fiber
- fiber grating
- grating temperature
- measuring part
- plug
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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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- Measuring Temperature Or Quantity Of Heat (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
The utility model provides a tubular type optical fiber grating temperature sensor with single end fixed. The tubular type optical fiber granting temperature sensor comprises an optical fiber grating temperature measuring part, a protective pipe, and two plugs. As for prior art optical fiber grating temperature sensors, when a protective housing is exerted pressure, the optical fiber grating temperature measuring part will also bear force, which increases interference factors to the system and affecting accuracy of temperature measuring. To overcome this defect, the utility model will install the measuring part into the protective pipe so as to seal the measuring part and fix one end of the measuring part and one plug, the other end of the measuring part being suspended. In this way, when the protective pipe is exerted pressure, the measuring part will not bear force.
Description
One, technical field
The utility model relates to Fibre Optical Sensor, especially fiber-optical grating temperature sensor.
Two, background technology
Fiber grating has the incomparable advantage of many other sensors: full photo measure at the on-the-spot no electrical equipment of monitoring, is not disturbed by electromagnetism and nuclear radiation; Measured with catoptrical centre wavelength sign, be not subjected to the influence of factors such as light source power fluctuation, optical fiber micro-bending effect and coupling loss; Long service life or the like.
As novel sensing element, fiber grating is to temperature variation and the length variations cosensitize of itself.For fiber-optical grating temperature sensor, can utilize encapsulation dexterously, the length of fiber grating is varied with temperature, to increase its temperature control.But, after the measure portion of fiber-optical grating temperature sensor completes, should protect it, make it not be subjected to external force, in order to avoid its length changes because of disturbed by external force, so that only temperature variation can enter into the measure portion of sensor.This just requires this part is effectively protected.Existing resist technology is substantially: 1. firmly paste this part in the containment vessel; 2. this part is inserted in the pipe, then, two of pipe blocks.
The shortcoming of these two kinds of methods is: when containment vessel was stressed, this measure portion was also with stressed.The disturbing factor that this has increased system has influenced thermometric accuracy.
Three, utility model content
The utility model provides a kind of single-ended fixing tubular type fiber-optical grating temperature sensor.
A kind of single-ended fixing tubular type fiber-optical grating temperature sensor comprises optical fiber grating temperature measure portion, protection tube, plug 1 and plug 2, it is characterized in that: an end of described optical fiber grating temperature measure portion and described plug 1 are fixing; The other end of described optical fiber grating temperature measure portion is unsettled, does not contact described plug 2; Described plug 1 and described plug 2 are individually fixed in the two ends of described protection tube.
In order to overcome above-mentioned shortcoming, the utility model adopts this measure portion is encapsulated in the protection tube, and an end of this part is fixed with plug 1; The other end of this part is unsettled, does not contact plug 2.Like this, when protection tube is subjected to external force, this measure portion will be no longer stressed.
Four, description of drawings
Accompanying drawing is a structural representation of the present utility model.
Wherein, 1 is the optical fiber grating temperature measure portion, and 2 is protection tube, and 3 is that plug 1,4 is a plug 2.
Five, embodiment
Below in conjunction with for example the utility model being done more detailed description:
This sensing rises mainly to be made up of four parts: optical fiber grating temperature measure portion, protection tube, plug 1 and plug 2.
Earlier as required, the making of optical fiber grating temperature measure portion is finished.Its production method is shown in patent 200810105788.7.Then, an end and the plug 1 of this part is fixing.Afterwards, they are inserted in the protection tube, and plug 1 and protection tube are fixed.The length of protection tube is longer than the length of optical fiber grating temperature measure portion.At the other end of protection tube, block with plug 2.Structural representation after encapsulation is finished is shown in Figure of description.In addition, on plug 1 and plug 2, can open aperture, to pass optical fiber, to transmit signal.
Claims (1)
1. a single-ended fixing tubular type fiber-optical grating temperature sensor comprises optical fiber grating temperature measure portion, protection tube, plug 1 and plug 2, it is characterized in that: an end of described optical fiber grating temperature measure portion and described plug 1 are fixing; The other end of described optical fiber grating temperature measure portion is unsettled, does not contact described plug 2; Described plug 1 and described plug 2 are individually fixed in the two ends of described protection tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202030386U CN201653585U (en) | 2010-05-26 | 2010-05-26 | Tubular type optical fiber grating temperature sensor with single end fixed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202030386U CN201653585U (en) | 2010-05-26 | 2010-05-26 | Tubular type optical fiber grating temperature sensor with single end fixed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201653585U true CN201653585U (en) | 2010-11-24 |
Family
ID=43118827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202030386U Expired - Fee Related CN201653585U (en) | 2010-05-26 | 2010-05-26 | Tubular type optical fiber grating temperature sensor with single end fixed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201653585U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557959A (en) * | 2013-11-04 | 2014-02-05 | 国家电网公司 | Fiber grating temperature sensor probe |
-
2010
- 2010-05-26 CN CN2010202030386U patent/CN201653585U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557959A (en) * | 2013-11-04 | 2014-02-05 | 国家电网公司 | Fiber grating temperature sensor probe |
| CN103557959B (en) * | 2013-11-04 | 2015-06-24 | 国家电网公司 | Fiber grating temperature sensor probe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20120526 |