CN209296172U - A kind of fiber grating temperature sensor - Google Patents
A kind of fiber grating temperature sensor Download PDFInfo
- Publication number
- CN209296172U CN209296172U CN201822065710.9U CN201822065710U CN209296172U CN 209296172 U CN209296172 U CN 209296172U CN 201822065710 U CN201822065710 U CN 201822065710U CN 209296172 U CN209296172 U CN 209296172U
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- fiber grating
- shell
- temperature
- temperature sensor
- strain transducer
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Abstract
The utility model discloses a kind of fiber grating temperature sensors, including strain transducer ontology, strain transducer ontology includes fiber grating shell, the inner cavity of fiber grating shell is provided with strain detecting fiber grating and temperature compensation optical fiber grating, is fixedly connected to ceramic insertion core at the top and bottom of fiber grating shell inner cavity.The utility model passes through ceramic insertion core, adhesive-layer, polytetrafluoroethylene ethylene layer, stainless steel case, mounting blocks, bolt, ring segment, threaded rod, nut and sealing shroud are used cooperatively, solves common fiber grating tension in the case where exposed, fracture resistance is poor, and fiber grating temperature tolerance is poor, if operating temperature is higher than fiber grating heat resisting temperature, the central wavelength of grating will generate larger drift, the problem of causing fiber grating precision to reduce, it is good that the fiber grating temperature sensor has packaging effect, resistance to temperature and the higher advantage of durability degree, improve the practicability of the sensor.
Description
Technical field
The utility model relates to Fiber Grating Sensors Technology field, specially a kind of fiber grating temperature sensor.
Background technique
Fiber grating is a kind of refractive index generation axial cyclic modulation formation for making fiber core by certain method
Diffraction grating, be a kind of passive filtering device, due to grating fibers have small in size, splice loss, splice attenuation is small, be compatible with optical fiber entirely,
The advantages that intellectual material can be embedded to, and its resonance wavelength is quicker to the variation of the external environments such as strain, refractive index, concentration
Sense, therefore be widely used in fiber optic communication and sensory field.
Common fiber grating tension, fracture resistance in the case where exposed is poor, and fiber grating temperature tolerance is poor, such as
Fruit operating temperature is higher than fiber grating heat resisting temperature, and the central wavelength of grating will generate larger drift, lead to fiber grating
Precision reduces, so it is very necessary for being packaged protection to fiber grating.
Utility model content
The purpose of this utility model is to provide a kind of fiber grating temperature sensor, it is good to have a packaging effect, resistance to temperature
With the higher advantage of durability degree, it is poor to solve common fiber grating tension, fracture resistance in the case where exposed, and optical fiber
Grating temperature tolerance is poor, if operating temperature is higher than fiber grating heat resisting temperature, the central wavelength of grating will generate larger float
The problem of moving, fiber grating precision caused to reduce.
To achieve the above object, the utility model provides the following technical solutions: a kind of fiber grating temperature sensor, including
Strain transducer ontology, the strain transducer ontology include fiber grating shell, the inner cavity setting of the fiber grating shell
There are strain detecting fiber grating and temperature compensation optical fiber grating, the top and bottom of the fiber grating shell inner cavity are fixed to be connected
Be connected to ceramic insertion core, two sides of the ceramic insertion core far from fiber grating shell with strain detecting fiber grating and temperature-compensating
Fiber grating is fixedly connected, and the top and bottom of the fiber grating shell pass through adhesive-layer and are fixedly connected with polytetrafluoroethylene (PTFE)
Layer, it is provided with stainless steel case at the top and bottom of the polytetrafluoroethylene ethylene layer, the two sides of the fiber grating shell are run through
It is provided with optical cable, the optical cable extends to the outside of stainless steel case, the strain transducer far from one end of fiber grating shell
The two sides of body surface are arranged with mounting blocks, and the side of the mounting blocks is provided through bolt, the strain transducer sheet
The two sides in body surface face are arranged with ring segment, and the front surface of the ring segment is provided through threaded rod, the threaded rod surface
Top and bottom be arranged with nut, the surface of the optical cable is arranged with sealing shroud, the sealing shroud close to mounting blocks one
Side is fixedly connected with mounting blocks.
Preferably, the side of the mounting blocks offers threaded hole compatible with bolt, the threaded rod and nut phase
Adaptation.
Preferably, it is provided with fluorescent sticker at the top of the strain transducer ontology front surface, the width of the fluorescent sticker is not
Less than three centimetres.
Preferably, the surface of the bolt is arranged with buffer stopper, and the total quantity of the buffer stopper is four.
Preferably, mounting plate is fixedly connected at the top and bottom of the sealing shroud, the surface of the mounting plate opens up
There is mounting hole.
Compared with prior art, the beneficial effects of the utility model are as follows:
1, the utility model passes through ceramic insertion core, adhesive-layer, polytetrafluoroethylene ethylene layer, stainless steel case, mounting blocks, bolt, ring
Shape piece, threaded rod, nut and sealing shroud are used cooperatively, and solve common fiber grating tension, anti-in the case where exposed
Folding endurance can be poor, and fiber grating temperature tolerance is poor, if operating temperature is higher than fiber grating heat resisting temperature, the middle cardiac wave of grating
The problem of length will generate larger drift, and fiber grating precision is caused to reduce, the fiber grating temperature sensor have encapsulation effect
Fruit is good, and resistance to temperature and the higher advantage of durability degree improve the practicability of the sensor.
2, the utility model is by the setting of fluorescent sticker, so that the sensor is easier to send out in the case where insufficient light
It is existing, and when the front surface of strain transducer ontology is provided with labeling, achieve the effect that warning, by the setting of buffer stopper, keeps away
The case where having exempted from bolt to damage mounting blocks when screwing, having led to mounting blocks poor sealing effect has reached protection mounting blocks
Effect, extend the service life of mounting blocks, by the setting of mounting plate, the person of being convenient to use pacifies the sensor
Dress, avoids the phenomenon that other mounting structures damage the sensor, the sensor is caused not to be available.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is the main view sectional view of the utility model strain transducer body construction.
In figure: 1, strain transducer ontology；2, fiber grating shell；3, strain detecting fiber grating；4, temperature-compensating light
Fine grating；5, adhesive-layer；6, polytetrafluoroethylene ethylene layer；7, stainless steel case；8, optical cable；9, ceramic insertion core；10, mounting blocks；11, spiral shell
Bolt；12, ring segment；13, threaded rod；14, nut；15, sealing shroud；16, fluorescent sticker；17, buffer stopper；18, mounting plate.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
The utility model provides a kind of technical solution referring to FIG. 1-2: a kind of fiber grating temperature sensor, including answers
Become sensor body 1, strain transducer ontology 1 includes fiber grating shell 2, and the inner cavity of fiber grating shell 2 is provided with strain
Detection fiber grating 3 and temperature compensation optical fiber grating 4, fiber grating shell are fixedly connected to pottery at the top and bottom of 2 inner cavity
Porcelain lock pin 9, two sides of the ceramic insertion core 9 far from fiber grating shell 2 with strain detecting fiber grating 3 and temperature-compensating light
Fine grating 4 is fixedly connected, and the top and bottom of fiber grating shell 2 pass through adhesive-layer 5 and are fixedly connected with polytetrafluoroethylene ethylene layer
6, the top and bottom of polytetrafluoroethylene ethylene layer 6 are provided with stainless steel case 7, and the two sides of fiber grating shell 2 are provided through
Optical cable 8, optical cable 8 extend to the outside of stainless steel case 7 far from one end of fiber grating shell 2,1 surface of strain transducer ontology
Two sides are arranged with mounting blocks 10, and the side of mounting blocks 10 is provided through bolt 11, the two sides on 1 surface of strain transducer ontology
It is arranged with ring segment 12, the front surface of ring segment 12 is provided through threaded rod 13, the top and bottom on 13 surface of threaded rod
It is arranged with nut 14, the surface of optical cable 8 is arranged with sealing shroud 15, side and mounting blocks 10 of the sealing shroud 15 close to mounting blocks 10
It is fixedly connected.
In the utility model: the side of mounting blocks 10 offers threaded hole compatible with bolt 11, threaded rod 13 and spiral shell
Cap 14 is adapted.
In the utility model: being provided with fluorescent sticker 16, the width of fluorescent sticker 16 at the top of 1 front surface of strain transducer ontology
Not less than three centimetres, by the setting of fluorescent sticker 16, so that the sensor is easier to find in the case where insufficient light, and
When the front surface of strain transducer ontology 1 is provided with labeling, achieve the effect that warning.
In the utility model: the surface of bolt 11 is arranged with buffer stopper 17, and the total quantity of buffer stopper 17 is four, by slow
The setting for rushing block 17 avoids bolt 11 and damages when screwing to mounting blocks 10, leads to 10 poor sealing effect of mounting blocks
Situation has achieved the effect that protect mounting blocks 10, has extended the service life of mounting blocks 10.
In the utility model: the top and bottom of sealing shroud 15 are fixedly connected to mounting plate 18, the surface of mounting plate 18
Mounting hole is offered, by the setting of mounting plate 18, the person of being convenient to use installs the sensor, avoids other installations
The phenomenon that structure damages the sensor, and the sensor is caused not to be available.
Working principle: when the utility model is used, by the setting of stainless steel case 7, enhancing the durability degree of the sensor,
So that the sensor is hardly damaged and deforms under external force, while polytetrafluoroethylene ethylene layer 6 and stainless steel case 7 all play and subtract
Fiber grating complete preservation, user can be passed through rotation spiral shell by the setting of ceramic insertion core 9 by the effect of slow temperature transmitting
Mounting blocks 10 are fixed on the surface of strain transducer ontology 1 by bolt 11, pass through the cooperation of mounting blocks 10, bolt 11 and sealing shroud 15
It uses, waterproof, sealing and the effect for protecting junction is played to the sensor, so that it is set in screw thread by rotary nut 14
The surface of bar 13 has achieved the effect that stationary annular piece 12, so that the sensor is more stable, to reach the optical fiber
Grating temperature sensor packaging effect is good, resistance to temperature and the higher purpose of durability degree.
In summary: the fiber grating temperature sensor passes through ceramic insertion core 9, adhesive-layer 5, polytetrafluoroethylene ethylene layer 6, no
Rust steel shell 7, mounting blocks 10, bolt 11, ring segment 12, threaded rod 13, nut 14 and sealing shroud 15 are used cooperatively, and are solved general
Logical fiber grating tension, fracture resistance in the case where exposed is poor, and fiber grating temperature tolerance is poor, if operating temperature
Higher than fiber grating heat resisting temperature, the central wavelength of grating will generate larger drift, lead to asking for fiber grating precision reduction
Topic.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (5)
1. a kind of fiber grating temperature sensor, including strain transducer ontology (1), it is characterised in that: the strain transducer
Ontology (1) includes fiber grating shell (2), and the inner cavity of the fiber grating shell (2) is provided with strain detecting fiber grating (3)
With temperature compensation optical fiber grating (4), ceramic insertion core is fixedly connected at the top and bottom of fiber grating shell (2) inner cavity
(9), side of two ceramic insertion cores (9) far from fiber grating shell (2) is mended with strain detecting fiber grating (3) and temperature respectively
It repays fiber grating (4) to be fixedly connected, the top and bottom of the fiber grating shell (2) pass through adhesive-layer (5) and are fixedly connected
Have polytetrafluoroethylene ethylene layer (6), is provided with stainless steel case (7), the optical fiber at the top and bottom of the polytetrafluoroethylene ethylene layer (6)
The two sides of grating shell (2) are provided through optical cable (8), and the optical cable (8) extends far from the one end of fiber grating shell (2)
To the outside of stainless steel case (7), the two sides on strain transducer ontology (1) surface are arranged with mounting blocks (10), the peace
The side of dress block (10) is provided through bolt (11), and the two sides on strain transducer ontology (1) surface are arranged with annular
The front surface of piece (12), the ring segment (12) is provided through threaded rod (13), the top on threaded rod (13) surface and
Bottom is arranged with nut (14), and the surface of the optical cable (8) is arranged with sealing shroud (15), and the sealing shroud (15) is close to installation
The side of block (10) is fixedly connected with mounting blocks (10).
2. a kind of fiber grating temperature sensor according to claim 1, it is characterised in that: the one of the mounting blocks (10)
Side, which is offered, to be adapted with bolt (11) compatible threaded hole, the threaded rod (13) with nut (14).
3. a kind of fiber grating temperature sensor according to claim 1, it is characterised in that: the strain transducer ontology
(1) it is provided at the top of front surface fluorescent sticker (16), the width of the fluorescent sticker (16) is not less than three centimetres.
4. a kind of fiber grating temperature sensor according to claim 1, it is characterised in that: the surface of the bolt (11)
It is arranged with buffer stopper (17), the total quantity of the buffer stopper (17) is four.
5. a kind of fiber grating temperature sensor according to claim 1, it is characterised in that: the top of the sealing shroud (15)
Portion and bottom are fixedly connected to mounting plate (18), and the surface of the mounting plate (18) offers mounting hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822065710.9U CN209296172U (en) | 2018-12-10 | 2018-12-10 | A kind of fiber grating temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822065710.9U CN209296172U (en) | 2018-12-10 | 2018-12-10 | A kind of fiber grating temperature sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209296172U true CN209296172U (en) | 2019-08-23 |
Family
ID=67657899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822065710.9U Expired - Fee Related CN209296172U (en) | 2018-12-10 | 2018-12-10 | A kind of fiber grating temperature sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209296172U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111795994A (en) * | 2020-04-30 | 2020-10-20 | 中山市精量光电子科技有限公司 | Plug-in fiber bragg grating water seepage monitoring sensor |
| CN118031833A (en) * | 2024-02-02 | 2024-05-14 | 南通理工学院 | Burying method of pavement structure response dynamic perception monitoring system |
-
2018
- 2018-12-10 CN CN201822065710.9U patent/CN209296172U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111795994A (en) * | 2020-04-30 | 2020-10-20 | 中山市精量光电子科技有限公司 | Plug-in fiber bragg grating water seepage monitoring sensor |
| CN118031833A (en) * | 2024-02-02 | 2024-05-14 | 南通理工学院 | Burying method of pavement structure response dynamic perception monitoring system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190823 Termination date: 20191210 |