CN202661197U - Fiber bragg grating temperature sensor with high reliability and rapid temperature response - Google Patents
Fiber bragg grating temperature sensor with high reliability and rapid temperature response Download PDFInfo
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- CN202661197U CN202661197U CN201220303533.3U CN201220303533U CN202661197U CN 202661197 U CN202661197 U CN 202661197U CN 201220303533 U CN201220303533 U CN 201220303533U CN 202661197 U CN202661197 U CN 202661197U
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Abstract
The utility model provides a fiber bragg grating temperature sensor with high reliability and rapid temperature response. The temperature sensor comprises a base, an outer sleeve, a fiber bragg grating, a left optical cable for encapsulating left tail fibers and a right optical cable for encapsulating right tail fibers, wherein the base comprises a left support part and a right support part; the left support part and the right support part are horizontally symmetrically arranged, and the fiber bragg grating is glued between the left support part and the right support part; and the outer sleeve is sheathed outside the fiber bragg grating, the left end of the outer sleeve is fixedly connected with the left optical cable by riveting, and the right end of the outer sleeve is fixedly connected with the right optical cable by riveting. The temperature sensor has the advantages of high reliability and rapid temperature response.
Description
Technical field
The utility model relates to a kind of temperature sensor, is specifically related to a kind of high reliability fast temperature response fiber-optical grating temperature sensor.
Background technology
At present, temperature sensor is widely used in the fields such as petrochemical complex, pipeline, dykes and dams, liquid solution, cable interlayer and heavy construction, is mainly used in construction monitoring, Long Period Health Monitoring or detection.
The temperature sensor of traditional employing electrical measurement method have acquisition precision low, be subject to the shortcomings such as electromagnetic interference (EMI), poor stability and signal transmission distance be short, therefore, be difficult in abominable working environment, monitor.And the existing fiber grating temperature sensor is compared with traditional temperature sensor, has that monitoring sensitivity height, volume are little, lightweight, safety anti-explosive, anti-electromagnetic interference capability is strong and the advantage such as long distance of signal transmission, therefore, has widely and uses.
But the fixedly optical cables of bonding agent that adopt in the present fiber-optical grating temperature sensor encapsulation process owing to bond area is less more, so, fiber grating is bonding not firm, easily fracture, the thus direct functional reliability that has significantly reduced fiber-optical grating temperature sensor; In addition, the outside protective case of fiber grating adopts
Metal material is made, and has the high and low defective of packaging efficiency of packaging cost, and, owing to have certain distance between outside protective case and the fiber grating, thus cause the optical fiber grating temperature low-response, reduced the measuring accuracy of fiber-optical grating temperature sensor.
The utility model content
For the defective that prior art exists, the utility model provides a kind of high reliability fast temperature response fiber-optical grating temperature sensor, has fast advantage of reliability height and temperature-responsive.
The technical solution adopted in the utility model is as follows:
The utility model provides a kind of high reliability fast temperature response fiber-optical grating temperature sensor, comprising: pedestal, outer tube, fiber grating, the right optical cable that is used for encapsulating the left optical cable of left tail optical fiber and is used for encapsulating right tail optical fiber; Described pedestal comprises left support section and right support section; Described left support section and described right support section are symmetrical set, and described fiber grating is bonded between described left support section and the described right support section; Described outer tube is set in the outside of described fiber grating, and the left end of described outer tube is fixedly connected with the mode of described left optical cable by riveted joint, and the right-hand member of described outer tube is fixedly connected with the mode of described right optical cable by riveted joint.
Preferably, also comprise: left dock connector and right dock connector; Described left dock connector is set between described left tail optical fiber and the described left optical cable; Described right dock connector is set between described right tail optical fiber and the described right optical cable.
Preferably, described left dock connector is provided with the first external thread, and described left support section outside surface is provided with the first internal thread, and described the first external thread and described the first internal thread are suitable, and described left dock connector is fixedly connected with by screw thread with described left support section; Described right dock connector is provided with the second external thread, and described right support section outside surface is provided with the second internal thread, and described the second external thread and described the second internal thread are suitable, and described right dock connector is fixedly connected with by screw thread with described right support section.
Preferably, described left support section offers the first cell body vertically, described right support section offers the second cell body vertically, the left end of described fiber grating is fixedly connected with by the bonding mode of single-point with described the first cell body, and the right-hand member of described fiber grating is fixedly connected with by the bonding mode of single-point with described the second cell body.
Preferably, also comprise: web member; Described web member is arranged between described left support section and the described right support section, and the left side of described web member is fixedly connected with the inside surface of described left support section, and the right side of described web member is fixedly connected with the inside surface of described right support section.
Preferably, the outside surface of described web member offers the 3rd cell body vertically, and the middle part of described fiber grating is placed on described the 3rd cell body inside with the form of bending.
Preferably, offer first at described web member near an end of described left support section and overflow the pond, offer second at described web member near an end of described right support section and overflow the pond.
Preferably, described first overflows pond and described second overflows the pond and be arranged in parallel, and equal axial vertical with described fiber grating.
Preferably, described outer tube is metal tube.
The beneficial effects of the utility model are as follows:
The high reliability fast temperature response fiber-optical grating temperature sensor that the utility model provides, dock connector is fixedly connected with the mode of pedestal by screw thread, therefore, have and encapsulate easily advantage, and, outer tube and optical cable and dock connector are by the mode compacting of riveted joint, thus the temperature-responsive time that can the Effective Raise fiber grating.Owing to the design of pedestal, effectively the fixed fiber grating improves the fiber grating functional reliability again.Therefore, the high reliability fast temperature response fiber-optical grating temperature sensor that the utility model provides has fast advantage of reliability height and temperature-responsive.
Description of drawings
The structural representation of the high reliability fast temperature response fiber-optical grating temperature sensor that Fig. 1 provides for the utility model;
The structural representation of the pedestal that Fig. 2 provides for the utility model;
The left optical cable of 1---; The left dock connector of 2---; The 3---outer tube; The 4---pedestal; The 5---fiber grating; 6---left support section; 7---right support section; The 8---web member; 9---the first cell body; 10---the second cell body; 11---the 3rd cell body; 12---first overflows the pond; 13---second overflows the pond.
Embodiment
Below in conjunction with accompanying drawing the utility model is elaborated:
As shown in Figure 1, the utility model provides a kind of high reliability fast temperature response fiber-optical grating temperature sensor, comprising: pedestal, outer tube, fiber grating, the right optical cable that is used for encapsulating the left optical cable of left tail optical fiber and is used for encapsulating right tail optical fiber; Described pedestal comprises left support section and right support section; Described left support section and described right support section are symmetrical set, and described fiber grating is bonded between described left support section and the described right support section; Described outer tube is set in the outside of described fiber grating, and the left end of described outer tube is fixedly connected with the mode of described left optical cable by riveted joint, and the right-hand member of described outer tube is fixedly connected with the mode of described right optical cable by riveted joint.Wherein, outer tube can be metal tube.By the riveted joint mode with outer tube and optical cable compacting, the ambient temperature that outer tube can be experienced in time passes to fiber grating, thus the raising fiber grating the temperature-responsive time.
In addition, because the two ends tail optical fiber of fiber grating in use is very easy to fracture, so, protect for the two ends tail optical fiber to fiber grating, also comprise: left dock connector and right dock connector; Described left dock connector is set between described left tail optical fiber and the described left optical cable; Described right dock connector is set between described right tail optical fiber and the described right optical cable.Wherein, left dock connector is provided with the first external thread, and described left support section outside surface is provided with the first internal thread, and described the first external thread and described the first internal thread are suitable, and described left dock connector is fixedly connected with by screw thread with described left support section; Described right dock connector is provided with the second external thread, and described right support section outside surface is provided with the second internal thread, and described the second external thread and described the second internal thread are suitable, and described right dock connector is fixedly connected with by screw thread with described right support section.Like this, by the mode of riveting, can outer tube, optical cable and three parts of dock connector are tightly compacted, and the temperature-responsive time of improving fiber grating.
As shown in Figure 2, in the utility model, left support section offers the first cell body vertically, described right support section offers the second cell body vertically, the left end of described fiber grating is fixedly connected with by the bonding mode of single-point with described the first cell body, and the right-hand member of described fiber grating is fixedly connected with by the bonding mode of single-point with described the second cell body.Also comprise: web member; Described web member is arranged between described left support section and the described right support section, and the left side of described web member is fixedly connected with the inside surface of described left support section, and the right side of described web member is fixedly connected with the inside surface of described right support section.The outside surface of web member offers the 3rd cell body vertically, and the middle part of described fiber grating is placed on described the 3rd cell body inside with the form of bending.Therefore, the concrete mounting means of fiber grating is: it is inner that fiber grating is placed on the 3rd cell body with the loose state of bending, carry out spacing by the 3rd cell body to fiber grating, and the two ends of fiber grating are bonded in respectively the first cell body and the second cell body is inner, play the effect of fixed fiber grating.By this packaged type, can improve the functional reliability of fiber grating, bonding agent when preventing that the fiber grating two ends are bonding overflows, can also offer first near an end of described left support section at web member and overflow the pond, offer second at described web member near an end of described right support section and overflow the pond.Described first overflows pond and described second overflows the pond and be arranged in parallel, and equal axial vertical with described fiber grating.
In the utility model, dock connector is fixedly connected with the mode of pedestal by screw thread, therefore, have and encapsulate easily advantage, and outer tube and optical cable and dock connector are by the mode compacting of riveted joint, thus the temperature-responsive time that can the Effective Raise fiber grating.Owing to the design of pedestal, effectively the fixed fiber grating improves the fiber grating functional reliability again.Therefore, the high reliability fast temperature response fiber-optical grating temperature sensor that the utility model provides has fast advantage of reliability height and temperature-responsive.
The above only is preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be looked protection domain of the present utility model.
Claims (9)
1. a high reliability fast temperature response fiber-optical grating temperature sensor is characterized in that, comprising: pedestal, outer tube, fiber grating, the right optical cable that is used for encapsulating the left optical cable of left tail optical fiber and is used for encapsulating right tail optical fiber; Described pedestal comprises left support section and right support section; Described left support section and described right support section are symmetrical set, and described fiber grating is bonded between described left support section and the described right support section; Described outer tube is set in the outside of described fiber grating, and the left end of described outer tube is fixedly connected with the mode of described left optical cable by riveted joint, and the right-hand member of described outer tube is fixedly connected with the mode of described right optical cable by riveted joint.
2. high reliability fast temperature response fiber-optical grating temperature sensor according to claim 1 is characterized in that, also comprises: left dock connector and right dock connector; Described left dock connector is set between described left tail optical fiber and the described left optical cable; Described right dock connector is set between described right tail optical fiber and the described right optical cable.
3. high reliability fast temperature response fiber-optical grating temperature sensor according to claim 2, it is characterized in that, described left dock connector is provided with the first external thread, described left support section outside surface is provided with the first internal thread, described the first external thread and described the first internal thread are suitable, and described left dock connector is fixedly connected with by screw thread with described left support section; Described right dock connector is provided with the second external thread, and described right support section outside surface is provided with the second internal thread, and described the second external thread and described the second internal thread are suitable, and described right dock connector is fixedly connected with by screw thread with described right support section.
4. high reliability fast temperature response fiber-optical grating temperature sensor according to claim 1, it is characterized in that, described left support section offers the first cell body vertically, described right support section offers the second cell body vertically, the left end of described fiber grating is fixedly connected with by the bonding mode of single-point with described the first cell body, and the right-hand member of described fiber grating is fixedly connected with by the bonding mode of single-point with described the second cell body.
5. high reliability fast temperature response fiber-optical grating temperature sensor according to claim 1 is characterized in that, also comprises: web member; Described web member is arranged between described left support section and the described right support section, and the left side of described web member is fixedly connected with the inside surface of described left support section, and the right side of described web member is fixedly connected with the inside surface of described right support section.
6. high reliability fast temperature response fiber-optical grating temperature sensor according to claim 5, it is characterized in that, the outside surface of described web member offers the 3rd cell body vertically, and the middle part of described fiber grating is placed on described the 3rd cell body inside with the form of bending.
7. high reliability fast temperature response fiber-optical grating temperature sensor according to claim 5, it is characterized in that, offer first at described web member near an end of described left support section and overflow the pond, offer second at described web member near an end of described right support section and overflow the pond.
8. high reliability fast temperature response fiber-optical grating temperature sensor according to claim 7 is characterized in that, described first overflows pond and described second overflows the pond and be arranged in parallel, and equal axial vertical with described fiber grating.
9. each described high reliability fast temperature response fiber-optical grating temperature sensor is characterized in that described outer tube is metal tube according to claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220303533.3U CN202661197U (en) | 2012-06-25 | 2012-06-25 | Fiber bragg grating temperature sensor with high reliability and rapid temperature response |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220303533.3U CN202661197U (en) | 2012-06-25 | 2012-06-25 | Fiber bragg grating temperature sensor with high reliability and rapid temperature response |
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| CN202661197U true CN202661197U (en) | 2013-01-09 |
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| CN201220303533.3U Expired - Lifetime CN202661197U (en) | 2012-06-25 | 2012-06-25 | Fiber bragg grating temperature sensor with high reliability and rapid temperature response |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105389929A (en) * | 2015-12-30 | 2016-03-09 | 郑州光力科技股份有限公司 | Goaf temperature sensing optical fiber laying structure and goaf fire fore-warning system |
-
2012
- 2012-06-25 CN CN201220303533.3U patent/CN202661197U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105389929A (en) * | 2015-12-30 | 2016-03-09 | 郑州光力科技股份有限公司 | Goaf temperature sensing optical fiber laying structure and goaf fire fore-warning system |
| CN105389929B (en) * | 2015-12-30 | 2017-10-31 | 郑州光力科技股份有限公司 | Goaf temperature sensing optical fiber laying structure and goaf fire early-warning system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130109 |