CN206627230U - A kind of fiber-optical grating temperature sensor - Google Patents
A kind of fiber-optical grating temperature sensor Download PDFInfo
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- CN206627230U CN206627230U CN201720309952.0U CN201720309952U CN206627230U CN 206627230 U CN206627230 U CN 206627230U CN 201720309952 U CN201720309952 U CN 201720309952U CN 206627230 U CN206627230 U CN 206627230U
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- fiber
- temperature sensor
- rear end
- grating temperature
- pedestal
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Abstract
The utility model discloses a kind of fiber-optical grating temperature sensor, including：Front-end protection shell, rear end pedestal, glass capillary, fiber grating and Loose tube；The outer sheath of described fiber grating one end is provided with the Loose tube; and the Loose tube passes through the rear end pedestal; the other end of the fiber grating is stretched into inside the glass capillary; the rear end base interior is stretched into the openend of the glass capillary; the closed end of the glass capillary is arranged inside the front-end protection shell, and the inwall at the front-end protection shell opener end is connected with the outer wall thread of the rear end pedestal.Fiber grating one end is fixed on the pedestal of rear end, and the other end is in free state, and the utility model temperature-measuring range simple in construction is big, the measurement data linearity is high.
Description
Technical field
It the utility model is related to a kind of fiber-optical grating temperature sensor.
Background technology
In recent years, fiber-optical grating temperature sensor is because with electromagnetism interference, corrosion-resistant, long-term behaviour is stable, long distance
Grade small from transmission loss is better than the advantages of electrical type temperature sensor, has been widely used in various monitoring fields.It is but big at present
Most design for temperature sensor mainly consider enhanced sensitivity with expanding test scope, and ignore sensor itself linearity problems, especially
It is the linearity above and below zero degree.
Utility model content
The utility model overcomes the shortcomings that fiber-optical grating temperature sensor in the prior art, proposes one kind in sensor test
In the range of linearity coefficient fiber-optical grating temperature sensor that is consistent, and not influenceed by external force.
In order to achieve the above object, the technical solution of the utility model is as follows：
A kind of fiber-optical grating temperature sensor, including：Front-end protection shell, rear end pedestal, glass capillary, fiber grating with
And Loose tube；The outer sheath of fiber grating one end is provided with Loose tube, and Loose tube passes through rear end pedestal, the other end of fiber grating
Stretch into inside glass capillary, rear end base interior is stretched into the openend of glass capillary, and the closed end of glass capillary is set
Inside front-end protection shell, the inwall at front-end protection shell opener end is connected with the outer wall thread of rear end pedestal.
A kind of fiber-optical grating temperature sensor of the utility model is simple in construction, and sensor temperature-measuring range is big, measurement data line
Property degree it is high.
On the basis of above-mentioned technical proposal, following improvement can be also done：
As preferable scheme, rear end pedestal includes the base body in cylinder, in base body centrally along its axial direction
First through hole, the second through hole and third through-hole are offered successively, and first through hole is opened in the entrance point of base body, third through-hole
It is opened in the port of export of base body.
It is more convenient using above-mentioned preferable scheme, installation.
As preferable scheme, first through hole, third through-hole, the aperture of the second through hole are successively decreased successively.
Using above-mentioned preferable scheme, it is easy to worker to be installed, more intuitively distinguishes entrance point and outlet is disconnected.Meanwhile
Different aperture installations can also improve the degree of being connected firmly between base body and other each parts.
As preferable scheme, the outer surface of the through hole of base body second along its be circumferentially with first lug boss of circle and
One the second lug boss of circle, the first lug boss is close to the entrance point of base body, the port of export of second lug boss close to base body.
Using above-mentioned preferable scheme, the first lug boss and the second lug boss are easy to the assembling of later stage sensor, raising group
Fill efficiency.
As preferable scheme, the height of the first lug boss is less than the height of the second lug boss.
Using above-mentioned preferable scheme, ensure the firmness of later stage sensor assembling, and ensure outside the sensor after assembling
See more attractive.
As preferable scheme, inserting groove is provided with the first lug boss, is provided with and inserting groove phase on front-end protection shell
The grafting of matching is raised.
Using above-mentioned preferable scheme, the connection tautness between front-end protection shell and rear end pedestal is improved.
As preferable scheme, fiber-optical grating temperature sensor also includes：Armored optical cable, armored optical cable are used to coat from base
The Loose tube that the port of export of seat body stretches out, and connected between armored optical cable and rear end pedestal by crimp rings.
Using above-mentioned preferable scheme, armored optical cable is protected to the leading-out terminal of fiber grating.
As preferable scheme, fiber-optical grating temperature sensor also includes：Tail sleeve pipe, tail sleeve pipe sleeve is located at rear end pedestal
Outside, and the junction of tail sleeve covers front-end protection shell and rear end pedestal.
Using above-mentioned preferable scheme, tail sleeve pipe is protected to rear end pedestal, especially protects rear end pedestal to be protected with front end
The junction of protective case.
As preferable scheme, front-end protection shell is made with rear end pedestal of identical metal material.
Using above-mentioned preferable scheme, front-end protection shell and rear end pedestal select the excellent same metal material of heat transfer performance
Material, can quickly transmit extraneous change.
As preferable scheme, projection or groove provided with multiple matrix distributions on the outer wall of front-end protection shell.
It is more attractive using above-mentioned preferable scheme, it is easily installed, and heat-conductive characteristic is more preferably.
Brief description of the drawings
Fig. 1 is a kind of sectional view for fiber-optical grating temperature sensor that the utility model embodiment provides.
Fig. 2 is the sectional view for the front-end protection shell that the utility model embodiment provides.
Fig. 3 is the sectional view for the rear end pedestal that the utility model embodiment provides.
Fig. 4 is the part cooperation schematic diagram that the utility model embodiment provides.
Wherein：1 front-end protection shell, 2 rear end pedestals, 20 base bodies, 201 entrance points, 202 ports of export, 21 first through hole,
22 second through holes, 23 third through-holes, 24 first lug bosses, 25 second lug bosses, 3 glass capillaries, 4 fiber gratings, 5 pine sets
Pipe, 6 armored optical cables, 7 tail sleeve pipes, 8 crimp rings.
Embodiment
Describe preferred embodiment of the present utility model in detail below in conjunction with the accompanying drawings.
In order to reach the purpose of this utility model, in a kind of some of embodiments of fiber-optical grating temperature sensor,
As shown in figure 1, a kind of fiber-optical grating temperature sensor, including：Front-end protection shell 1, rear end pedestal 2, capillary glass
Pipe 3, fiber grating 4, Loose tube 5, armored optical cable 6 and tail sleeve pipe 7.
The outer sheath of the one end of fiber grating 4 is provided with Loose tube 5, and Loose tube 5 passes through rear end pedestal 2, fiber grating 4 it is another
One end is stretched into inside glass capillary 3, and the openend of glass capillary 3 is stretched into inside rear end pedestal 2, and glass capillary 3 closes
Mouth end is arranged inside front-end protection shell 1, and the inwall of the openend of front-end protection shell 1 is connected with the outer wall thread of rear end pedestal 2.
Front-end protection shell 1 is one end open, the cylinder of one end closing.
Rear end pedestal 2 includes the base body 20 in cylinder, is axially offered successively centrally along it in base body 20
First through hole 21, the second through hole 22 and third through-hole 23, first through hole 21 are opened in the entrance point 201 of base body 20, and the 3rd
Through hole 23 is opened in the port of export 202 of base body.In the outer surface of the second through hole of base body 22 circle is circumferentially with along it
First lug boss 24 and second lug boss 25 of circle, for the first lug boss 24 close to the entrance point 201 of base body 20, second is raised
The port of export 202 of the portion 25 close to base body 20.
Armored optical cable 6 is used to coat the Loose tube 5 stretched out from the port of export 202 of base body 20, and armored optical cable 6 is with after
Connected between end group seat 2 by crimp rings 8, armored optical cable 6 is protected to the leading-out terminal of fiber grating 4.
Tail sleeve pipe 7 is sheathed on the outside of rear end pedestal 2, and tail sleeve pipe 7 covers the company of front-end protection shell 1 and rear end pedestal 2
Meet place.Tail sleeve pipe 7 is protected to rear end pedestal 2, especially protects the junction of rear end pedestal 2 and front-end protection shell 1.
A kind of installation process of fiber-optical grating temperature sensor of the utility model is as follows：
As shown in Fig. 2 in the axial centre working depth hole of front-end protection shell 1, it is easy to the later stage to install；
As shown in figure 3, first through hole 21, the second through hole 22 and third through-hole 23 are processed in the axial centre of base body 20,
Bore dia is respectively r1, r2, r3, in two boss of Surface Machining of base body 20, respectively the first lug boss 24 and second
Lug boss 25, in the front end position tapping of the first lug boss, with the screw thread twist-on of front-end protection shell 1.
As shown in figure 4, the Loose tube 5 on the set of one end of fiber grating 4, is bonded Loose tube 5 and fiber grating 4 with glue
Afterwards, the other end of the fiber grating 4 with grating is put into inside glass capillary 3 completely, Loose tube 5 stretches into glass capillary 3
Inner length L1, by glue bonding, Loose tube 5 puts armored optical cable 6 outside for both, and armored optical cable 6 passes through pressure with rear end pedestal 2
Ring 8 is connect to connect；Glass capillary 3 inserts rear end base 2 apart from for L2, uses glue bonding.
Front-end protection shell 1 is docked with rear end pedestal 2, is connected through a screw thread, the tail sleeve pipe 7 in the outer cover of rear end pedestal 2,
By junction covering protection.
A kind of operation principle of fiber-optical grating temperature sensor of the utility model is as follows：
The one end of fiber grating 4 being placed in inside glass capillary 3 bonds, and the other end is in free state, works as external heat
Inside is transferred to, fiber grating 4 will freely extend and be deformed because heated, be not affected by temperature heat expansion by peripheral material completely
The additional force of shrinkage influences, it is ensured that the linearity is consistent in temperature-measuring range.
The utility model proposes one kind in the range of sensor test linearity coefficient light that is consistent, and not influenceed by external force
Fine grating temperature sensor, its advantage are as follows：
1) simple in construction, sensor temperature-measuring range is big, the measurement data linearity is high.
2) the same metal material that front-end protection shell 1 selects heat transfer performance excellent with rear end pedestal 2 is made, can be quick
Transmit extraneous change.
3) capillary glass tube 3 with identical deformation coefficient protects fiber grating 4 not influenceed by external force.
In order to further optimize implementation result of the present utility model, in other embodiment, remaining feature skill
Art is identical, and difference is, first through hole 21, third through-hole 23, the aperture of the second through hole 22 are successively decreased successively.
Using above-mentioned preferable scheme, it is easy to worker to be installed, more intuitively distinguishes entrance point and outlet is disconnected.Meanwhile
Different aperture installations can also improve the degree of being connected firmly between base body and other each parts.
In order to further optimize implementation result of the present utility model, in other embodiment, remaining feature skill
Art is identical, and difference is, the height of the first lug boss 24 is less than the height of the second lug boss 25.
Using above-mentioned preferable scheme, ensure the firmness of later stage sensor assembling, and ensure outside the sensor after assembling
See more attractive.
In order to further optimize implementation result of the present utility model, in other embodiment, remaining feature skill
Art is identical, and difference is, inserting groove (not shown) is provided with the first lug boss 24, is set on front-end protection shell 1
There is the grafting projection (not shown) to match with inserting groove.
Using above-mentioned preferable scheme, the connection tautness between front-end protection shell 1 and rear end pedestal 2 is improved.
In order to further optimize implementation result of the present utility model, in other embodiment, remaining feature skill
Art is identical, and difference is, the projection or groove on the outer wall of front-end protection shell 1 provided with multiple matrix distributions are (in figure not
Show).
It is more attractive using above-mentioned preferable scheme, it is easily installed, and heat-conductive characteristic is more preferably.
The above is only preferred embodiment of the present utility model, it is noted that for one of ordinary skill in the art
For, on the premise of not departing from the utility model and creating design, various modifications and improvements can be made, these belong to this
The protection domain of utility model.
Claims (10)
- A kind of 1. fiber-optical grating temperature sensor, it is characterised in that including：Front-end protection shell, rear end pedestal, glass capillary, Fiber grating and Loose tube；The outer sheath of described fiber grating one end is provided with the Loose tube, and the Loose tube passes through the rear end pedestal, described The other end of fiber grating is stretched into inside the glass capillary, and the rear end pedestal is stretched into the openend of the glass capillary Inside, the closed end of the glass capillary are arranged inside the front-end protection shell, the front-end protection shell opener end it is interior Wall is connected with the outer wall thread of the rear end pedestal.
- 2. fiber-optical grating temperature sensor according to claim 1, it is characterised in that it is in cylinder that the rear end pedestal, which includes, Base body, the base body centrally along its axially offer first through hole, the second through hole and third through-hole successively, The first through hole is opened in the entrance point of the base body, and the third through-hole is opened in the outlet of the base body End.
- 3. fiber-optical grating temperature sensor according to claim 2, it is characterised in that the first through hole, third through-hole, Successively decrease successively in the aperture of second through hole.
- 4. fiber-optical grating temperature sensor according to claim 3, it is characterised in that in the through hole of base body second Outer surface along its be circumferentially with first lug boss of circle and one circle the second lug boss, first lug boss is close to the pedestal The entrance point of body, the port of export of second lug boss close to the base body.
- 5. fiber-optical grating temperature sensor according to claim 4, it is characterised in that the height of first lug boss is low In the height of second lug boss.
- 6. fiber-optical grating temperature sensor according to claim 5, it is characterised in that be provided with first lug boss Inserting groove, it is raised that the grafting to match with the inserting groove is provided with the front-end protection shell.
- 7. the fiber-optical grating temperature sensor according to claim 5 or 6, it is characterised in that the optical fiber grating temperature passes Sensor also includes：Armored optical cable, the armored optical cable are used to coat the pine set stretched out from the port of export of the base body Pipe, and connected between the armored optical cable and the rear end pedestal by crimp rings.
- 8. fiber-optical grating temperature sensor according to claim 7, it is characterised in that the fiber-optical grating temperature sensor Also include：Tail sleeve pipe, the tail sleeve pipe sleeve are located at the outside of the rear end pedestal, and front-end protection described in the tail sleeve covers The junction of shell and rear end pedestal.
- 9. fiber-optical grating temperature sensor according to claim 8, it is characterised in that the front-end protection shell with it is described after End group seat is made of identical metal material.
- 10. fiber-optical grating temperature sensor according to claim 9, it is characterised in that in the outer of the front-end protection shell Wall is provided with the projection or groove of multiple matrix distributions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720309952.0U CN206627230U (en) | 2017-03-28 | 2017-03-28 | A kind of fiber-optical grating temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720309952.0U CN206627230U (en) | 2017-03-28 | 2017-03-28 | A kind of fiber-optical grating temperature sensor |
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| Publication Number | Publication Date |
|---|---|
| CN206627230U true CN206627230U (en) | 2017-11-10 |
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ID=60208736
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720309952.0U Active CN206627230U (en) | 2017-03-28 | 2017-03-28 | A kind of fiber-optical grating temperature sensor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108645534A (en) * | 2018-05-24 | 2018-10-12 | 哈尔滨博检精测科技有限公司 | Train axle temperature wheel temperature on-line monitoring system based on fiber grating |
| CN110274709A (en) * | 2018-03-13 | 2019-09-24 | 中国石油化工股份有限公司 | A kind of fibre optic temperature sensor for the monitoring of External floating roof tank floating plate |
| CN110274710A (en) * | 2018-03-13 | 2019-09-24 | 中国石油化工股份有限公司 | A kind of floating plate temperature computation measurement method, system and application for floating roof tank |
-
2017
- 2017-03-28 CN CN201720309952.0U patent/CN206627230U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110274709A (en) * | 2018-03-13 | 2019-09-24 | 中国石油化工股份有限公司 | A kind of fibre optic temperature sensor for the monitoring of External floating roof tank floating plate |
| CN110274710A (en) * | 2018-03-13 | 2019-09-24 | 中国石油化工股份有限公司 | A kind of floating plate temperature computation measurement method, system and application for floating roof tank |
| CN108645534A (en) * | 2018-05-24 | 2018-10-12 | 哈尔滨博检精测科技有限公司 | Train axle temperature wheel temperature on-line monitoring system based on fiber grating |
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