CN203551144U - Probe of fiber grating temperature sensor - Google Patents
Probe of fiber grating temperature sensor Download PDFInfo
- Publication number
- CN203551144U CN203551144U CN201320689529.XU CN201320689529U CN203551144U CN 203551144 U CN203551144 U CN 203551144U CN 201320689529 U CN201320689529 U CN 201320689529U CN 203551144 U CN203551144 U CN 203551144U
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- China
- Prior art keywords
- optical fiber
- fiber grating
- temperature sensor
- sleeve pipe
- grating
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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 - Lifetime
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- 239000000835 fiber Substances 0.000 title claims abstract description 39
- 239000000523 sample Substances 0.000 title claims abstract description 23
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052802 copper Inorganic materials 0.000 claims abstract description 5
- 239000010949 copper Substances 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims abstract description 4
- 239000013307 optical fiber Substances 0.000 claims description 54
- 238000005538 encapsulation Methods 0.000 claims description 23
- 230000001681 protective effect Effects 0.000 claims description 13
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims description 6
- 229920002379 silicone rubber Polymers 0.000 claims description 6
- 239000012774 insulation material Substances 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 230000006355 external stress Effects 0.000 abstract description 4
- 238000004806 packaging method and process Methods 0.000 abstract 5
- 238000009529 body temperature measurement Methods 0.000 abstract 1
- 229910010293 ceramic material Inorganic materials 0.000 abstract 1
- 239000011810 insulating material Substances 0.000 abstract 1
- 238000009413 insulation Methods 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 5
- 238000001514 detection method Methods 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
Images
Abstract
The utility model provides a probe of a fiber grating temperature sensor. The probe comprises a fiber grating packaging sleeve, a fiber grating and a thermal conductive protection sleeve, wherein the grid portion of the fiber grating is positioned in the fiber grating packaging sleeve to measure the temperature, one end of the grid portion is fixed, and the other end of the grid portion is suspended; the two ends of the thermal conductive protection sleeve are fixed to clamping ends to package the fiber grating packaging sleeve; and the tail end of the fiber grating penetrates through the clamping end. According to the utility model, the fiber grating packaging sleeve is made of copper material and has good thermal conductivity; the thermal conductive protection sleeve is made of ceramic material and has good insulation property and strong capability of resisting electromagnetic interference; and the clamping ends are made of high-temperature-resistant insulating material. The probe of the fiber grating temperature sensor is small in volume, high is response speed, and simple in packaging structure; and the probe can not only effectively eliminate influence of external stress on temperature measurement of the sensor but also shield electromagnetic interference.
Description
Technical field
The utility model relates to a kind of optical fiber grating temperature sensor probe, belongs to fiber-optical grating temperature sensor technical field.
Background technology
In the national economic development, electric power is one of important basic energy resource.Along with national economy constantly advances, we also increase rapidly for the demand of electric power resource.The scale of electric system constantly expands, and electric system temperature detection becomes a research topic becoming more and more important.
Conventional electric power temperature sensor is mainly divided into contact and contactless two kinds.Touch sensor mainly comprises thermal resistance, thermopair etc.Some methods adopt platinum resistance to carry out power equipment temperature detection, then the temperature data collecting are sent to host computer and process, and can obtain good temperature detection effect.But because thermal resistance and thermopair are when the work, detection signal all needs to transmit by plain conductor.This just inevitably can produce electromagnetic distu in space, can cause that transmission line of electricity produces short circuit risk under extreme case.Meanwhile, the noise in high-frequency alternating field also can exert an influence to plain conductor.Make it produce inductive loop heating, thereby the data that detect are produced and disturbed, make temperature detection effect degree of accuracy inadequate.And because contact type temperature sensor belongs to the sensor of consumption-type, during long-term work, stability is very restricted, and cost is higher.
Non-contact infrared temperature sensor carries out the method for temperature monitoring to power cable.This class sensor can detect the cable temperature under corrosion environment.But while utilizing sensors with auxiliary electrode were, generally need staff to carry thermal infrared imager, some key point in circuit is detected, can not realize Real-Time Monitoring on a large scale.This just has very large restricted, and infrared sensor can only be monitored the temperature of circuit surface.Disturbed by the temperature variation of surrounding environment and changes of magnetic field simultaneously.Its application in engineering is also very restricted.
Larger than temperature sensor volume, during measurement, need power supply, be subject to electromagnetic interference (EMI), there is voltage and current in the inside of its sensor, has greatly limited its range of application.For example, in some large-scale electric substations, the environment of thermometric strong-electromagnetic field often, and inflammable and explosive, measurement space is narrow and small.Therefore the fiber-optic grating sensor that, volume is little, anti-electromagnetic interference capability is strong becomes study hotspot.At present both at home and abroad about the research of fiber-optical grating temperature sensor, mainly utilize the foveal reflex wavelength of fiber grating to vary with temperature to form the principle design of linear change.Chinese patent document CN200820027488.7 discloses a kind of fiber-optical grating temperature sensor, is to be fixed on steel bar by fiber grating two ends, then steel bar is fixed in steel pipe.The fiber grating two ends of this fiber-optical grating temperature sensor are fixed on steel bar, are not only measuring temperature and not stressing in complete meaning.When sensor vibrates, there is microstrain because inertia can produce vibration in steel bar.These can cause measuring accuracy not high.
The critical component of fiber-optical grating temperature sensor is optical fiber grating temperature sensor probe, how by optical fiber Bragg grating encapsulation forming fibre-optic grating temperature sensor probe, under strong-electromagnetic field environment, when making it accurately measure temperature, shielded from external stresses or vibrations are on its impact, and this is the problem that needs solve.
Utility model content
While measuring temperature for solving existing fiber grating temperature sensor under strong-electromagnetic field environment, be subject to the problem that affects of external stress, it is a kind of only for measuring external temperature that the utility model provides, and the optical fiber grating temperature sensor probe of shielded from external stresses.
The utility model completes by following technical proposal:
A kind of optical fiber grating temperature sensor probe, comprising:
Optical fiber Bragg grating encapsulation sleeve pipe, fiber grating and heat conduction protective casing, described fiber grating consists of grid region and afterbody optical fiber, and the grid region of described fiber grating is packaged in optical fiber Bragg grating encapsulation sleeve pipe, have a side of afterbody optical fiber and the end of optical fiber Bragg grating encapsulation sleeve pipe bonding fixing, opposite side is unsettled; The two ends of described heat conduction protective casing are fixed with bare terminal end, and the two ends of described optical fiber Bragg grating encapsulation sleeve pipe are individually fixed on bare terminal end, and the afterbody optical fiber of fiber grating is through described bare terminal end; Described fiber grating afterbody optical fiber is provided with tail part protection sleeve pipe outward, and one end of described tail part protection sleeve pipe is fixed on the end of heat conduction protective casing.
Being made by metallic copper of aforesaid optical fiber Bragg grating encapsulation sleeve pipe.
The material of aforesaid heat conduction protective casing is pottery.
Aforesaid fiber grating is made by quartz glass.
Aforesaid bare terminal end is made by high-temperature insulation material.
Aforesaid high-temperature insulation material is ABS plastic or silicon rubber.
Aforesaid tail part protection sleeve pipe is made by ABS plastic or silicon rubber.
The difference range of aforesaid optical fiber Bragg grating encapsulation casing inner diameter and fiber grating external diameter is less than 0.5mm.
The utlity model has following advantages and effect: 1) be not only suitable for conventional thermometric environment, but also be suitable for the measurement to temperature under strong electromagnetic environment, such as the temperature survey of electric system; 2) optical fiber grating temperature sensor probe is simple in structure, easily manufactured; 3) this probe adopts two sleeve pipe forms, and outer sleeve is heat conduction protective casing, adopts stupalith, and its good insulating, anti-electromagnetic interference capability are strong; Inner sleeve is optical fiber Bragg grating encapsulation sleeve pipe, adopts copper product, and its heat conductivility is strong, and this double-tube structure form can either shield external force to thermometric impact, can effectively improve again measuring accuracy.
Accompanying drawing explanation
Fig. 1 is optical fiber grating temperature sensor probe structural representation of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the technical scheme of utility model is elaborated:
As shown in Figure 1: temperature sensing probe for fiber bragg grating of the present utility model comprises:
Optical fiber Bragg grating encapsulation sleeve pipe 2, fiber grating and heat conduction protective casing 3, wherein fiber grating consists of grid region 1 and afterbody optical fiber 7, the grid region 1 of fiber grating is packaged in optical fiber Bragg grating encapsulation sleeve pipe 2, there are a side of afterbody optical fiber and the end of optical fiber Bragg grating encapsulation sleeve pipe 2 bonding fixing, opposite side is unsettled, in free state; The two ends of heat conduction protective casing 3 are fixed with bare terminal end 4, and the two ends of optical fiber Bragg grating encapsulation sleeve pipe 2 are individually fixed on bare terminal end 4, and the afterbody optical fiber 7 of fiber grating is through described bare terminal end 4; Fiber grating afterbody optical fiber 7 is outer is provided with tail part protection sleeve pipe 6, and one end of tail part protection sleeve pipe 6 is fixed on the end of heat conduction protective casing 3.
Being made by metallic copper of optical fiber Bragg grating encapsulation sleeve pipe 2.
The material of heat conduction protective casing 3 is pottery.
Fiber grating is made by quartz glass.
Bare terminal end 4 is made by high-temperature insulation material, as ABS plastic or silicon rubber.
Tail part protection sleeve pipe 6 is made by ABS plastic or silicon rubber.
The internal diameter of optical fiber Bragg grating encapsulation sleeve pipe 2 and the external diameter of fiber grating are almost identical, differ in 0.5mm.
Making specific embodiments of the present utility model is:
1, the left end in fiber grating grid region 1 is deducted to unnecessary optical fiber in safe range, the grid region of fiber grating 1 is inserted in optical fiber Bragg grating encapsulation sleeve pipe 2, the optical fiber of grid region right-hand member is coated 502 glue 5 makes its bonding be fixed on the right-hand member of optical fiber Bragg grating encapsulation sleeve pipe 2;
2, the circumferential edges of bare terminal end 4 is fixed on to the two ends of protection thermal conducting sleeve 3 by tackifier;
3, by optical fiber Bragg grating encapsulation sleeve pipe 2 through bare terminal end 4, and stick with glue agent it be firmly fixed in protection thermal conducting sleeve, and give corresponding environment and make it completely curing;
4, the optical fiber 7 of fiber grating right-hand member, through bare terminal end 4, sticks with glue agent tail part protection sleeve pipe 6 is fixed on and protects the right-hand member of thermal conducting sleeve 3 for the protection of afterbody optical fiber 7.
Although above the utility model is had been described in detail, the utility model is not limited only to this, and others skilled in the art can carry out various modifications according to principle of the present utility model.Therefore, all modifications of making according to the utility model principle, all should be understood to fall into protection domain of the present utility model.
Claims (8)
1. an optical fiber grating temperature sensor probe, is characterized in that, comprising:
Optical fiber Bragg grating encapsulation sleeve pipe, fiber grating and heat conduction protective casing, described fiber grating consists of grid region and afterbody optical fiber, and the grid region of described fiber grating is packaged in optical fiber Bragg grating encapsulation sleeve pipe, have a side of afterbody optical fiber and the end of optical fiber Bragg grating encapsulation sleeve pipe bonding fixing, opposite side is unsettled; The two ends of described heat conduction protective casing are fixed with bare terminal end, and the two ends of described optical fiber Bragg grating encapsulation sleeve pipe are individually fixed on bare terminal end, and the afterbody optical fiber of fiber grating is through described bare terminal end; Described fiber grating afterbody optical fiber is provided with tail part protection sleeve pipe outward, and one end of described tail part protection sleeve pipe is fixed on the end of heat conduction protective casing.
2. a kind of optical fiber grating temperature sensor probe according to claim 1, is characterized in that, being made by metallic copper of described optical fiber Bragg grating encapsulation sleeve pipe.
3. a kind of optical fiber grating temperature sensor probe according to claim 1, is characterized in that, the material of described heat conduction protective casing is pottery.
4. a kind of optical fiber grating temperature sensor probe according to claim 1, is characterized in that, described fiber grating is made by quartz glass.
5. a kind of optical fiber grating temperature sensor probe according to claim 1, is characterized in that, described bare terminal end is made by high-temperature insulation material.
6. a kind of optical fiber grating temperature sensor probe according to claim 5, is characterized in that, described high-temperature insulation material is ABS plastic or silicon rubber.
7. a kind of optical fiber grating temperature sensor probe according to claim 1, is characterized in that, described tail part protection sleeve pipe is made by ABS plastic or silicon rubber.
8. a kind of optical fiber grating temperature sensor probe according to claim 1, is characterized in that, the difference range of described optical fiber Bragg grating encapsulation casing inner diameter and fiber grating external diameter is less than 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320689529.XU CN203551144U (en) | 2013-11-04 | 2013-11-04 | Probe of fiber grating temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320689529.XU CN203551144U (en) | 2013-11-04 | 2013-11-04 | Probe of fiber grating temperature sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203551144U true CN203551144U (en) | 2014-04-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320689529.XU Expired - Lifetime CN203551144U (en) | 2013-11-04 | 2013-11-04 | Probe of fiber grating temperature sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203551144U (en) |
Cited By (3)
| 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 |
| CN104316218A (en) * | 2014-10-31 | 2015-01-28 | 国家电网公司 | Method for improving accuracy in measuring temperature of casing of GIS disconnecting switch |
| CN106168511A (en) * | 2016-08-27 | 2016-11-30 | 保定合力达电缆附件有限公司 | A kind of high tension cable connect-disconnect plug with temp sensing function |
-
2013
- 2013-11-04 CN CN201320689529.XU patent/CN203551144U/en not_active Expired - Lifetime
Cited By (3)
| 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 |
| CN104316218A (en) * | 2014-10-31 | 2015-01-28 | 国家电网公司 | Method for improving accuracy in measuring temperature of casing of GIS disconnecting switch |
| CN106168511A (en) * | 2016-08-27 | 2016-11-30 | 保定合力达电缆附件有限公司 | A kind of high tension cable connect-disconnect plug with temp sensing function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140416 Effective date of abandoning: 20150624 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140416 Effective date of abandoning: 20150624 |
|
| RGAV | Abandon patent right to avoid regrant |