CN215573431U - Optical fiber grating temperature sensor - Google Patents
Optical fiber grating temperature sensor Download PDFInfo
- Publication number
- CN215573431U CN215573431U CN202122092513.8U CN202122092513U CN215573431U CN 215573431 U CN215573431 U CN 215573431U CN 202122092513 U CN202122092513 U CN 202122092513U CN 215573431 U CN215573431 U CN 215573431U
- Authority
- CN
- China
- Prior art keywords
- fiber grating
- protection tube
- temperature sensor
- housing
- fiber
- Prior art date
- 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.)
- Active
Links
Images
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The utility model relates to the technical field of temperature sensors, in particular to a fiber grating temperature sensor. The utility model provides a fiber grating temperature sensor, which comprises a housin, the protection tube and be used for the fiber grating with temperature signal conduction to external equipment, the casing cover is established outside the protection tube, the protection tube cover is established outside the fiber grating, be equipped with in the casing and hold the chamber, be equipped with on the casing and hold the opening of chamber intercommunication, fiber grating is connected and is set up the second fiber grating outside holding the chamber including setting up the first fiber grating that holds the intracavity and with first fiber grating, second fiber grating is used for with temperature signal conduction to external equipment, the protection tube is including setting up at the first protection tube that holds the intracavity and with first protection union coupling and set up the second protection tube outside holding the chamber, first protection tube is established outside first fiber grating, first fiber grating stretches out the one end that second protection tube was kept away from to first protection tube, the second protection tube cover is established outside the second fiber grating.
Description
Technical Field
The utility model relates to the technical field of temperature sensors, in particular to a fiber grating temperature sensor.
Background
In recent years, fiber grating temperature sensors have become more widely used. Compared with the traditional temperature sensor, the fiber grating temperature sensor has the obvious advantages of simple miniaturization and manufacturing process, and can be applied to a plurality of narrow spaces, such as wire harnesses, transformers and other occasions for temperature measurement.
In the traditional fiber grating temperature sensor, one end of a fiber grating is arranged in a shell, and the other end of the fiber grating is connected with an optical cable joint outside the shell.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a fiber grating temperature sensor, aiming at solving the problem that the fiber grating is easy to break.
In order to solve the above problems, the present invention provides a fiber grating temperature sensor, which includes a housing, a protection tube, and a fiber grating for transmitting a temperature signal to an external device, wherein the housing is sleeved outside the protection tube, and the protection tube is sleeved outside the fiber grating;
the fiber grating comprises a first fiber grating arranged in the accommodating cavity and a second fiber grating connected with the first fiber grating and arranged outside the accommodating cavity, and the second fiber grating is used for transmitting the temperature signal to the external equipment;
the protection tube is including setting up hold the first protection tube of intracavity and with first protection tube is connected and is set up hold the outer second protection tube of chamber, first protection tube is established outside first fiber grating, first fiber grating stretches out first protection tube is kept away from the one end of second protection tube, the second protection tube cover is established outside the second fiber grating.
The embodiment of the utility model has the following beneficial effects:
the fiber bragg grating temperature sensor comprises a shell, the protection tube and be used for the fiber grating with temperature signal conduction to external equipment, the casing cover is established outside the protection tube, the protection tube cover is established outside the fiber grating, be equipped with in the casing and hold the chamber, be equipped with on the casing and hold the opening of chamber intercommunication, fiber grating is including setting up at the first fiber grating who holds the intracavity and be connected and set up the second fiber grating who holds outside the chamber with first fiber grating, second fiber grating is used for with temperature signal conduction to external equipment, the protection tube is including setting up at the first protective tube that holds the intracavity and be connected and set up the second protection tube that holds outside the chamber with first protective tube, first protection tube is established outside first fiber grating, first fiber grating stretches out the one end that the second protection tube was kept away from to first protective tube, the second protection tube cover is established outside the second fiber grating. The protection tube is sleeved outside the fiber bragg grating, so that the fiber bragg grating can be protected, and the fiber bragg grating is not easy to break. For fiber grating one end sets up in the casing in traditional fiber grating temperature sensor, the other end and the outer optical cable joint connection of casing, because fiber grating diameter is less, the scheme of rupture takes place for fiber grating easily, the protection tube cover among the fiber grating temperature sensor of this scheme is established outside fiber grating, can play the effect of protection to fiber grating, and fiber grating is difficult to take place the rupture.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Wherein:
fig. 1 is a working schematic diagram of a fiber grating temperature sensor according to an embodiment of the present invention.
Reference numerals:
10-a housing;
20-a protective tube, 21-a first protective tube, 23-a second protective tube;
30-fiber grating, 31-first fiber grating, 33-second fiber grating;
40-cable joint.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
As shown in fig. 1, an embodiment of the present invention provides a temperature sensor, which includes a housing 10, a protection tube 20, and a fiber grating 30 for transmitting a temperature signal to an external device, wherein the housing 10 is sleeved outside the protection tube 20, and the protection tube 20 is sleeved outside the fiber grating 30.
Be equipped with in the casing 10 and hold the chamber, be equipped with on the casing 10 and hold the opening of chamber intercommunication, fiber grating 30 is including setting up the first fiber grating 31 that holds the intracavity and being connected and setting up the second fiber grating 33 outside holding the chamber with first fiber grating 31, and second fiber grating 33 is used for transmitting temperature signal to external equipment.
The protection tube 20 includes that the setting is holding the first protection tube 21 of intracavity and being connected and setting up the second protection tube 23 outside holding the chamber with first protection tube 21, and first protection tube 21 cover is established outside first fiber grating 31, and first fiber grating 31 stretches out the one end that second protection tube 23 was kept away from to first protection tube 21, and second protection tube 23 cover is established outside second fiber grating 33.
The fiber bragg grating temperature sensor comprises a shell 10, a protection tube 20 and a fiber bragg grating 30 used for conducting temperature signals to external equipment, wherein the shell 10 is sleeved outside the protection tube 20, the protection tube 20 is sleeved outside the fiber bragg grating 30, a containing cavity is arranged in the shell 10, an opening communicated with the containing cavity is formed in the shell 10, the fiber bragg grating 30 comprises a first fiber bragg grating 31 arranged in the containing cavity and a second fiber bragg grating 33 connected with the first fiber bragg grating 31 and arranged outside the containing cavity, the second fiber bragg grating 33 is used for conducting the temperature signals to the external equipment, the protection tube 20 comprises a first protection tube 21 arranged in the containing cavity and a second protection tube 23 connected with the first protection tube 21 and arranged outside the containing cavity, the first protection tube 21 is sleeved outside the first fiber bragg grating 31, and the first fiber bragg grating 31 extends out of one end of the first protection tube 21, which is far away from the second protection tube 23, the second protection tube 23 is sleeved outside the second fiber grating 33. Since the protection tube 20 is sleeved outside the fiber grating 30, the fiber grating 30 can be protected, and the fiber grating 30 is not easily broken. For fiber grating one end sets up in the casing in traditional fiber grating temperature sensor, the other end and the outer optical cable joint connection of casing, because fiber grating diameter is less, the scheme of rupture takes place for fiber grating easily, the protection tube cover among the fiber grating temperature sensor of this scheme is established outside fiber grating, can play the effect of protection to fiber grating, and fiber grating is difficult to take place the rupture.
In this embodiment, the external device may be a monitoring instrument, and the monitoring instrument may read the monitored temperature.
In the present embodiment, an adhesive layer is provided between the housing 10 and the first protective tube 21.
Specifically, an adhesive layer is provided between the housing 10 and the first protection pipe 21, and the adhesive layer is used to connect the housing 10 and the first protection pipe 21 and also can perform a sealing function.
In the present embodiment, the ratio of the length of the first protection tube 21 to the length of the first fiber grating 31 is 1: 1.5 to 5.
Specifically, the ratio of the length of the first protection tube 21 to the length of the first fiber grating 31 may be 1: 1.5, 1: 2. 1: 2.5, 1: 3. 1: 3.5, 1: 4. 1: 4.5, 1: 5.
in the present embodiment, the protection tube 20 is a polytetrafluoroethylene protection tube.
Specifically, the protection tube 20 is a teflon protection tube, and has functions of corrosion resistance, high temperature resistance, and insulation.
In the present embodiment, the fiber grating temperature sensor further includes a cable joint 40 for connecting with an external device, and both an end of the second fiber grating 33 away from the housing 10 and an end of the second protection tube 23 away from the housing 10 are connected with the cable joint 40.
Specifically, the fiber grating temperature sensor further comprises an optical cable joint 40 for connecting with an external device, the end of the second fiber grating 33 away from the housing 10 and the end of the second protection tube 23 away from the housing 10 are both connected with the optical cable joint 40, and data measured by the fiber grating 30 can be conveniently transmitted to the external device through the optical cable joint 40.
Preferably, the housing 10 is a sleeve closed at one end, and the opening is located at the other end of the housing 10.
Specifically, the housing 10 is a sleeve with one closed end, the opening is located at the other end of the housing 10, and the protection tube 20 and the fiber grating 30 can extend into the sleeve from the opening, so that the assembly and disassembly are convenient.
Preferably, the housing 10 is a ceramic housing 10.
Specifically, the housing 10 is a ceramic housing 10, which has a high heat conduction function and is insulating.
Preferably, the ratio of the inner diameter of the housing 10 to the outer diameter of the protection pipe 20 is 1: 1 to 2.
Specifically, the ratio of the inner diameter of the housing 10 to the outer diameter of the protection pipe 20 may be 1: 1. 1: 1.1, 1: 1.2, 1: 1.3, 1: 1.4, 1: 1.5, 1: 1.6, 1: 1.7, 1: 1.8, 1: 1.9, 1: 2.
preferably, the ratio of the inner diameter of the protection tube 20 to the outer diameter of the fiber grating 30 is 1: 1.5 to 5.
Specifically, the ratio of the inner diameter of the protective tube 20 to the outer diameter of the fiber grating 30 may be 1: 1.5, 1: 2. 1: 2.5, 1: 3. 1: 3.5, 1: 4. 1: 4.5, 1: 5.
preferably, the fiber grating 30 is in a relaxed state.
Specifically, the fiber grating 30 is in a relaxed state, so that the fiber grating 30 can be free from the influence of force, and the measured temperature data is more accurate.
Preferably, an end of the first fiber grating 31 away from the second fiber grating 33 is disposed near the bottom surface of the housing 10.
Specifically, the end of the first fiber grating 31 away from the second fiber grating 33 is disposed close to the bottom surface of the housing 10, so that the temperature data measured by the fiber grating 30 is more accurate.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the utility model is not limited by the scope of the appended claims.
Claims (10)
1. The fiber bragg grating temperature sensor is characterized by comprising a shell, a protection tube and a fiber bragg grating, wherein the fiber bragg grating is used for conducting a temperature signal to external equipment;
the fiber grating comprises a first fiber grating arranged in the accommodating cavity and a second fiber grating connected with the first fiber grating and arranged outside the accommodating cavity, and the second fiber grating is used for transmitting the temperature signal to the external equipment;
the protection tube is including setting up hold the first protection tube of intracavity and with first protection tube is connected and is set up hold the outer second protection tube of chamber, first protection tube is established outside first fiber grating, first fiber grating stretches out first protection tube is kept away from the one end of second protection tube, the second protection tube cover is established outside the second fiber grating.
2. The fiber grating temperature sensor of claim 1, wherein an adhesive layer is disposed between the housing and the first protective tube.
3. The fiber grating temperature sensor of claim 2, wherein a ratio of the length of the first protection tube to the length of the first fiber grating is 1: 1.5 to 5.
4. The fiber grating temperature sensor of claim 3, wherein the protective tube is a polytetrafluoroethylene protective tube.
5. The fiber grating temperature sensor of claim 1, further comprising a cable joint for connecting to the external device, wherein an end of the second fiber grating remote from the housing and an end of the second protective tube remote from the housing are both connected to the cable joint.
6. The fiber grating temperature sensor according to any one of claims 1 to 5, wherein the housing is a sleeve with one end closed, and the opening is located at the other end of the housing.
7. The fiber grating temperature sensor of claim 6, wherein the housing is a ceramic housing.
8. The fiber grating temperature sensor of claim 7, wherein a ratio of an inner diameter of the housing to an outer diameter of the protection tube is 1: 1 to 2.
9. The fiber grating temperature sensor according to claim 8, wherein a ratio of an inner diameter of the protection tube to an outer diameter of the fiber grating is 1: 1.5 to 5.
10. The fiber grating temperature sensor of claim 6, wherein an end of the first fiber grating distal from the second fiber grating is disposed proximate to a bottom surface of the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122092513.8U CN215573431U (en) | 2021-08-31 | 2021-08-31 | Optical fiber grating temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122092513.8U CN215573431U (en) | 2021-08-31 | 2021-08-31 | Optical fiber grating temperature sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215573431U true CN215573431U (en) | 2022-01-18 |
Family
ID=79845348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122092513.8U Active CN215573431U (en) | 2021-08-31 | 2021-08-31 | Optical fiber grating temperature sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215573431U (en) |
-
2021
- 2021-08-31 CN CN202122092513.8U patent/CN215573431U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7665890B2 (en) | Temperature sensor assembly and method of manufacturing thereof | |
| US9638600B2 (en) | Electrical interconnect for pressure sensor in a process variable transmitter | |
| CN215573431U (en) | Optical fiber grating temperature sensor | |
| CN105300542B (en) | A kind of thermocouple for the measurement of high-velocity fluid temperature | |
| CN208171471U (en) | A kind of cable bulkhead temperature transducer | |
| CN210180555U (en) | Embedded platinum resistor temperature sensor of transmitter | |
| CN214621516U (en) | Temperature measurement structure and temperature measurement needle | |
| KR20100003966U (en) | Thermocouple | |
| CN214538277U (en) | Intelligent temperature transmitter | |
| CN105241513A (en) | Wireless integrated temperature and pressure transmitter | |
| CN210981349U (en) | Temperature and pressure integrated transmitter | |
| CN211504442U (en) | Protection device of thermal resistor | |
| CN215492139U (en) | Temperature measuring device | |
| JP5891105B2 (en) | Field device adapter and field device | |
| CN216050012U (en) | Temperature and pressure sensor | |
| CN210464723U (en) | Temperature sensor | |
| CN215810978U (en) | Pressure and temperature combined measuring head | |
| CN209230800U (en) | A kind of thermocouple with elastic pressuring clamping device | |
| CN213481420U (en) | Differential pressure flowmeter | |
| CN215952786U (en) | Multifunctional glass lining thermometer sleeve | |
| CN218566712U (en) | Magnetic-sticking type temperature sensor | |
| CN213658114U (en) | High-stability quick-response platinum thermal resistance thermometer for nuclear power station | |
| CN216746489U (en) | Carbon base temperature sensor | |
| CN202382879U (en) | Thermal resistance | |
| CN215984371U (en) | Adiabatic magnetostrictive sensor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |