CN210513469U - Fiber grating temperature sensor with built-in heat-conducting liquid - Google Patents
Fiber grating temperature sensor with built-in heat-conducting liquid Download PDFInfo
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- CN210513469U CN210513469U CN201921685180.6U CN201921685180U CN210513469U CN 210513469 U CN210513469 U CN 210513469U CN 201921685180 U CN201921685180 U CN 201921685180U CN 210513469 U CN210513469 U CN 210513469U
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Abstract
The utility model provides a built-in fiber grating temperature sensor who leads heat fluid, measure perception part and sensor protection part including fiber grating temperature sensor, sensor protection part includes the high strength and leads the temperature shell, the high strength is led the temperature shell parcel and is in outside the fiber grating temperature sensor measures the perception part, fiber grating temperature sensor measures the perception part and includes temperature sensitive fiber grating sensor component, the high strength is led the temperature shell and is equipped with the inside cavity of sensor, be full of the heat fluid within the inside cavity of sensor, temperature sensitive fiber grating sensor component sets up the inside cavity of sensor and quilt heat fluid surrounds. The utility model has the advantages that: the internal cavity of the sensor is filled with the heat-conducting liquid, so that the environmental temperature measured by the high-strength heat-conducting shell can be more efficiently and quickly conducted to the temperature-sensitive fiber grating sensing element, and the true temperature value can be efficiently and quickly measured.
Description
Technical Field
The utility model relates to a sensor especially relates to a fiber grating temperature sensor of built-in heat-conducting liquid.
Background
In recent years, the research and application of fiber grating sensors have attracted much attention, and compared with the traditional sensing measurement technology, the fiber grating sensing technology has many obvious advantages. For example, the fiber grating has the characteristics of flexible structural form, high temperature resistance, corrosion resistance, strong anti-electromagnetic interference capability, small volume, light weight and the like, and is widely applied to measurement of various physical quantities such as pressure, deformation, displacement, flow, volume, flow rate and the like.
At present, the design and processing method of the temperature sensor is relatively lagged, and the measurement precision, the response time, the measurement error and the like of the temperature cannot meet the requirements of the industry and the engineering development. Because the bare fiber grating sensing unit is very fine and has very small coefficients of stress and temperature sensitivity, and cannot be directly used for measuring actual physical quantities such as temperature, pressure and the like, the fiber grating sensing unit needs to be designed and packaged according to the measuring environment and the measured physical quantities, and the fiber grating sensing unit is processed into a fiber grating sensor capable of meeting the measuring requirements. Meanwhile, the existing temperature fiber grating sensor has preliminary research results, but the test effect of the existing temperature-measuring fiber grating sensor is required to be improved, and the temperature-measuring fiber grating sensor is not ideal in the aspects of temperature accuracy, precision, lag time and the like. Therefore, it is necessary to develop a fiber grating temperature sensor with a built-in heat-conducting liquid, which can measure the true temperature value efficiently and quickly.
Disclosure of Invention
In order to solve the problems in the prior art, the utility model provides a built-in fiber grating temperature sensor who leads hot liquid.
The utility model provides a built-in fiber grating temperature sensor who leads heat fluid, measure perception part and sensor protection part including fiber grating temperature sensor, sensor protection part includes the high strength and leads the temperature shell, the high strength is led the temperature shell parcel and is in outside the fiber grating temperature sensor measures the perception part, fiber grating temperature sensor measures the perception part and includes temperature sensitive fiber grating sensor component, the high strength is led the temperature shell and is equipped with the inside cavity of sensor, be full of the heat fluid within the inside cavity of sensor, temperature sensitive fiber grating sensor component sets up the inside cavity of sensor and quilt heat fluid surrounds.
As a further improvement of the present invention, the temperature sensitive fiber grating sensor element has at least two and is connected in series.
As a further improvement, the sensor groove is arranged in the inner cavity of the sensor, and the temperature-sensitive fiber grating sensor element is arranged in the sensor groove.
As a further improvement, the high-strength temperature-conducting shell is tightly wrapped on the inner cavity of the sensor.
As a further improvement of the utility model, the both ends of temperature sensitive fiber grating sensor component have sensor signal transmission optic fibre through the loose tube coupling of sensor respectively.
As a further improvement of the utility model, the outside parcel of sensor signal transmission optic fibre has sensor signal line protective layer.
As a further improvement, the both ends of high strength heat conduction shell all are fixed with sensor and signal line connection protection tube, sensor signal transmission optic fibre, sensor signal line protective layer all pass sensor and signal line connection protection tube.
As a further improvement, the high-strength temperature-conducting shell comprises a sensor high-strength heat-conducting upper protective shell and a sensor lower base, and the sensor high-strength heat-conducting upper protective shell is connected with the sensor lower base.
The utility model has the advantages that: through the scheme, the internal cavity of the sensor is filled with the heat-conducting liquid, so that the environmental temperature measured by the high-strength heat-conducting shell can be more efficiently and quickly conducted to the temperature-sensitive fiber grating sensing element, and the true temperature value can be efficiently and quickly measured.
Drawings
Fig. 1 is a schematic diagram of the fiber grating temperature sensor with a built-in heat-conducting liquid according to the present invention.
Fig. 2 is a schematic diagram of a sensor protection portion of a fiber grating temperature sensor with a built-in heat-conducting liquid according to the present invention.
Fig. 3 is a partial enlarged view of the fiber grating temperature sensor with a built-in heat-conducting liquid according to the present invention.
Detailed Description
The present invention will be further described with reference to the following description and embodiments.
As shown in fig. 1 to 3, a fiber grating temperature sensor with a built-in heat-conducting liquid includes a measurement sensing portion of the fiber grating temperature sensor and a sensor protection portion, the sensor protection portion includes a high-strength temperature-conducting casing 101, the high-strength temperature-conducting casing 101 is wrapped outside the measurement sensing portion of the fiber grating temperature sensor, the measurement sensing portion of the fiber grating temperature sensor includes a temperature-sensitive fiber grating sensor element 107, the high-strength temperature-conducting casing 101 is provided with a sensor internal cavity 106, the sensor internal cavity 106 is filled with a high-performance heat-conducting liquid 105, and the temperature-sensitive fiber grating sensor element 107 is disposed in the sensor internal cavity 106 and surrounded by the heat-conducting liquid 105.
As shown in fig. 1 to 3, there are at least two temperature-sensitive fiber grating sensor elements 107 and are connected in series, and the present embodiment preferably employs two temperature-sensitive fiber grating sensor elements 107 connected in series.
As shown in fig. 1 to 3, a sensor groove 108 is disposed in the sensor internal cavity 106, and the temperature-sensitive fiber grating sensor element 107 is disposed in the sensor groove 108.
As shown in fig. 1 to 3, the high-strength thermal conductive housing 101 tightly encloses the sensor internal cavity 106.
As shown in fig. 1 to 3, two ends of the temperature-sensitive fiber grating sensor element 107 are respectively connected with a sensor signal transmission fiber 103 through a sensor loose tube 111.
As shown in fig. 1 to 3, the sensor signal transmission fiber 103 is externally wrapped with a sensor signal line protective layer 102.
As shown in fig. 1 to 3, a sensor and signal line connection protection tube 104 is fixed at both ends of the high-strength thermal conductivity housing 101, and the sensor signal transmission optical fiber 103 and the sensor signal line protection layer 102 penetrate through the sensor and signal line connection protection tube 104.
As shown in fig. 1 to 3, the high-strength thermal conductive housing 101 includes a sensor high-strength thermal conductive upper protective shell 109 and a sensor lower base 110, and the sensor high-strength thermal conductive upper protective shell 109 is connected to the sensor lower base 110.
The utility model provides a pair of built-in thermal conductive liquid's fiber grating temperature sensor, fiber grating temperature sensor measure the perception part and have designed the temperature sensitive fiber grating sensing element 107 of two series connections, can get the average value and measure more accurate temperature value, can reduce measuring error.
The utility model provides a pair of fiber grating temperature sensor of built-in heat-conducting liquid through being full of heat-conducting liquid 105 in sensor internal cavity 106, can be with the more high-efficient and conduction fast of the ambient temperature that high strength heat conduction shell 101 surveyed to temperature sensitive fiber grating sensing element 107, consequently can measure the true value of temperature more fast.
The utility model provides a pair of built-in fiber grating temperature sensor who leads hot liquid through setting up sensor pine sleeve pipe 111, can guarantee that fiber grating temperature sensor freely removes, does not receive the power and does not transmit power, can be so that avoid other factors among the measurement process like stress deformation etc. to temperature measurement's influence, can more accurately really measure the temperature value.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.
Claims (8)
1. The utility model provides a built-in fiber grating temperature sensor who leads hot fluid which characterized in that: the sensor protection part comprises a high-strength temperature-conducting shell, the high-strength temperature-conducting shell is wrapped outside the fiber grating temperature sensor measurement sensing part, the fiber grating temperature sensor measurement sensing part comprises a temperature-sensitive fiber grating sensor element, the high-strength temperature-conducting shell is provided with a sensor inner cavity, heat-conducting liquid is filled in the sensor inner cavity, and the temperature-sensitive fiber grating sensor element is arranged in the sensor inner cavity and surrounded by the heat-conducting liquid.
2. The fiber grating temperature sensor with a built-in heat-conducting liquid according to claim 1, wherein: at least two temperature-sensitive fiber grating sensor elements are connected in series.
3. The fiber grating temperature sensor with a built-in heat-conducting liquid according to claim 1, wherein: a sensor groove is formed in the sensor inner cavity, and the temperature-sensitive fiber bragg grating sensor element is arranged in the sensor groove.
4. The fiber grating temperature sensor with a built-in heat-conducting liquid according to claim 1, wherein: the high-strength temperature-conducting shell tightly wraps the inner cavity of the sensor.
5. The fiber grating temperature sensor with a built-in heat-conducting liquid according to claim 1, wherein: and two ends of the temperature-sensitive fiber bragg grating sensor element are respectively connected with sensor signal transmission optical fibers through sensor loose tubes.
6. The fiber grating temperature sensor with a built-in heat-conducting liquid according to claim 5, wherein: and a sensor signal line protective layer is wrapped outside the sensor signal transmission optical fiber.
7. The fiber grating temperature sensor with a built-in heat-conducting liquid according to claim 6, wherein: sensor and signal line connection protection tube are all fixed with at the both ends of high strength heat conduction shell, sensor signal transmission optic fibre, sensor signal line protective layer all pass sensor and signal line connection protection tube.
8. The fiber grating temperature sensor with a built-in heat-conducting liquid according to claim 1, wherein: the high-strength temperature-conducting shell comprises a sensor high-strength heat-conducting upper protective shell and a sensor lower base, and the sensor high-strength heat-conducting upper protective shell is connected with the sensor lower base.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921685180.6U CN210513469U (en) | 2019-10-10 | 2019-10-10 | Fiber grating temperature sensor with built-in heat-conducting liquid |
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| CN201921685180.6U CN210513469U (en) | 2019-10-10 | 2019-10-10 | Fiber grating temperature sensor with built-in heat-conducting liquid |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110542492A (en) * | 2019-10-10 | 2019-12-06 | 深圳市基础工程有限公司 | Fiber grating temperature sensor with built-in heat-conducting liquid |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110542492A (en) * | 2019-10-10 | 2019-12-06 | 深圳市基础工程有限公司 | Fiber grating temperature sensor with built-in heat-conducting liquid |
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