CN211178802U - Calibration device applied to distributed optical fiber temperature measurement system - Google Patents
Calibration device applied to distributed optical fiber temperature measurement system Download PDFInfo
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- CN211178802U CN211178802U CN201922485199.2U CN201922485199U CN211178802U CN 211178802 U CN211178802 U CN 211178802U CN 201922485199 U CN201922485199 U CN 201922485199U CN 211178802 U CN211178802 U CN 211178802U
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- optical fiber
- distributed optical
- calibration
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- calibration box
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Abstract
The utility model discloses a be applied to distributed optical fiber temperature measurement system's calibrating device, including demarcating box and sensing optical fiber, set up the storage tank that coils sensing optical fiber in the demarcation box, the cross sectional shape of storage tank is ring shape, and the storage tank intussuseption is filled with the heat conduction gel that is used for wrapping up sensing optical fiber to, the center department of storage tank still is provided with the temperature sensor who detects the interior temperature of demarcation box. The utility model discloses can not heat conduction fast and the low scheduling problem of temperature calibration measurement accuracy that causes improves in the sensing optical fiber to current. The utility model has the advantages of measurement accuracy is high and sensing optical fiber life cycle is long.
Description
Technical Field
The utility model relates to an optical fiber sensing technical field especially involves being applied to distributed optical fiber temperature measurement system's calibrating device.
Background
The distributed optical fiber temperature sensing device is a novel linear fire detection system, the working principle of the distributed optical fiber temperature sensing device is that the spontaneous Raman scattering effect and the optical time domain reflection technology are utilized to obtain real-time temperature measurement distributed along optical fibers, the device not only can measure the temperature in real time, but also can accurately position the position of a fire, and the distributed optical fiber temperature sensing device has the advantages of long measuring distance, suitability for working in flammable and explosive severe environments and the like.
Because the photoelectric device among the distributed optical fiber temperature measuring device is easily influenced by temperature or gradually ages along with time, thereby influencing the temperature calibration coefficient, the temperature calibration device of the existing distributed optical fiber temperature measuring device can not quickly conduct heat to the sensing optical fiber to be measured, so that the temperature calibration measurement of the distributed optical fiber temperature measuring device is easy to generate errors, and the requirement of long-term online stable measurement of industrial environment is difficult to meet.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide and be applied to distributed optical fiber temperature measurement system's calibrating device to can not heat fast in the sensing optical fiber among the solution prior art and the temperature that causes marks the low level technical problem of measurement accuracy.
The utility model discloses a realize through following technical scheme: the utility model discloses a be applied to distributed optical fiber temperature measurement system's calibrating device, including demarcating box and sensing optical fiber, seted up in the demarcation box and coiled sensing optical fiber's storage tank, the shape of cross section of storage tank is ring shape, the storage tank intussuseption is filled with the heat conduction gel that is used for wrapping up sensing optical fiber, and, the center department of storage tank still is provided with the temperature sensor who detects the interior temperature of demarcation box.
Preferably, the heat-conducting gel is a trickling two-agent liquid heat-conducting gel.
Due to the arrangement of the flowing double-agent liquid heat-conducting gel, the flowing double-agent liquid heat-conducting gel can penetrate into the surface of the sensing optical fiber, the accommodating groove is filled completely, the heat conductivity coefficient is excellent, the heat of the sensing optical fiber can be conducted out quickly and sufficiently, the temperature calibration precision is improved, and the error is reduced.
Preferably, the width of the accommodating groove is 2.5-4 cm.
The width of the accommodating groove is limited, so that the sensing optical fiber can be coiled conveniently, and meanwhile, the using amount of the heat conducting gel can be limited.
Preferably, the calibration box is made of aluminum material.
The aluminum material has excellent heat-conducting property, and the calibration box is made of the aluminum material, so that the heat of the sensing optical fiber can be conducted out, the temperature calibration precision can be improved, and the performance of the distributed optical fiber temperature measuring device can be optimized.
Preferably, screw holes are respectively formed in 4 corner ends of the calibration box, and the screw holes longitudinally penetrate through the calibration box.
The arrangement of the screw hole can promote the fixation and installation of the calibration box, and the applicability of the distributed optical fiber temperature measuring device is improved.
Preferably, the fiber inlet in the horizontal direction is formed in the bottom of the accommodating groove, the fiber outlet in the horizontal direction is formed in the accommodating groove opening, and the fiber inlet and the fiber outlet both extend out of the calibration box.
The fiber outlet and the fiber inlet are provided with the trend of the adaptive optical fiber, so that the sensing optical fiber is not too large in curvature, and the protection of the sensing optical fiber is promoted.
Preferably, the fiber inlet and the fiber outlet are provided with sleeves for protecting the sensing optical fiber, the sleeves are bonded to the calibration box, and the sleeves are made of rubber materials.
The arrangement of the sleeve can play a role in protecting the sensing optical fiber exposed outside the calibration box, and the bending damage caused by external force is prevented.
Preferably, the temperature sensor is a thermocouple or a platinum resistor.
The thermocouple or the platinum resistor as the temperature sensor has higher detection precision, and the performance of the distributed optical fiber temperature measuring device is optimized.
Preferably, the optical fiber temperature measuring device further comprises an upper cover for sealing the accommodating groove, the upper cover is of a cylindrical structure, and the upper cover is in interference fit with the calibration box.
The arrangement of the upper cover can reduce heat loss in the calibration box and improve the detection precision of the temperature sensor.
The utility model discloses a be applied to distributed optical fiber temperature measurement system's calibrating device, compared with the prior art, this distributed optical fiber temperature measurement device fills through heat conduction gel to sensing optic fibre, and it is poor to have remedied the heat conductivity of air, adopts heat conduction gel to make as the heat conduction medium to be located the sensing optic fibre of demarcating in the box and can dispel the heat fast to demarcating the box to make temperature sensor real-time detection's temperature signal precision high, and, heat conduction gel has the guard action to sensing optic fibre, can prolong sensing optic fibre's life.
Drawings
Fig. 1 is a schematic perspective view of the present invention;
fig. 2 is a cross-sectional view of the present invention;
the attached drawings are marked as follows: 1. calibrating a box; 2. a sensing optical fiber; 3. a containing groove; 4. a thermally conductive gel; 5. a temperature sensor; 6. a screw hole; 7. a fiber inlet; 8. a fiber outlet; 9. a sleeve; 10. and (7) covering.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
Referring to fig. 1-2, a calibration device for a distributed optical fiber temperature measurement system includes a calibration box 1 with an upward opening and a sensing optical fiber 2, wherein the calibration box 1 is a cube structure and made of aluminum material. The calibration box 1 is internally provided with a containing groove 3 for coiling the sensing optical fiber 2, and the length of the sensing optical fiber 2 coiled in the containing groove 3 is generally 30-100 m; the cross section of the containing groove 3 is in a circular ring shape, and the width of the containing groove 3 is controlled within a range of 2.5-4 cm. The accommodating groove 3 is filled with heat conducting gel 4 for wrapping the sensing optical fiber 2, and the center of the accommodating groove 3 is also provided with a temperature sensor 5 for detecting the temperature in the calibration box 1. The calibration box 1 is further provided with a wire hole for wiring of the temperature sensor 5, and the temperature sensor 5 adopts a thermocouple or a platinum resistor.
The heat conducting gel 4 adopts G L PO L Y flowing double-agent liquid heat conducting gel 4, the flowing double-agent liquid heat conducting gel 4 can be slowly solidified after being contacted with the sensing optical fiber 2, so that the optical fiber is not extruded and damaged in an optical fiber groove, the aging of the optical fiber is delayed, in addition, the heat conducting coefficient of the G L PO L Y flowing double-agent liquid heat conducting gel 4 is 3.0W/M.K, the heat conducting performance is relatively high in heat conducting coefficient in the current market, and the heat of the optical fiber can be quickly and fully conducted out.
The screw holes 6 are respectively formed in the 4 corner ends of the calibration box 1, and the screw holes 6 longitudinally penetrate through the calibration box 1, so that the calibration box 1 is convenient to fix and install.
The fiber inlet 7 in the horizontal direction is formed at the bottom of the accommodating groove 3, the fiber outlet 8 in the horizontal direction is formed at the opening of the accommodating groove 3, and the fiber inlet 7 and the fiber outlet 8 both extend out of the calibration box 1.
The fiber inlet 7 and the fiber outlet 8 are both provided with a sleeve 9 for protecting the sensing optical fiber 2, the sleeve 9 is adhered to the calibration box 1, and the sleeve 9 is made of rubber materials.
The optical fiber temperature measuring device further comprises an upper cover 10 of the sealed containing groove 3, the upper cover 10 is of a cylinder structure, the upper cover 10 is in interference fit with the calibration box 1, and a handle convenient to pull can be further arranged on the upper cover 10.
During the work, stretch into fine mouth 7 with sensing fiber 2's one end earlier, then coil sensing fiber 2 in storage tank 3, wait to coil the completion after with sensing fiber 2's one end pull out from fine mouthful 8, pack heat conduction gel 4 to storage tank 3 at last, the packing of heat conduction gel 4 covers sensing fiber 2, is less than the notch a bit distance can. After the heat-conducting gel 4 is filled, the upper cover 10 is tightly covered, and the temperature sensor 5 is electrically connected with other modules of the distributed optical fiber temperature measuring device to monitor the temperature of the sensing optical fiber 2 in the accommodating groove 3 in real time.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The calibration device is applied to the distributed optical fiber temperature measurement system and is characterized by comprising a calibration box (1) and sensing optical fibers (2), wherein a containing groove (3) which is coiled around the sensing optical fibers (2) is formed in the calibration box (1), the cross section of the containing groove (3) is in a circular ring shape, heat-conducting gel (4) which is used for wrapping the sensing optical fibers (2) is filled in the containing groove (3), and a temperature sensor (5) which is used for detecting the temperature in the calibration box (1) is further arranged at the center of the containing groove (3).
2. The calibration device applied to the distributed optical fiber temperature measurement system according to claim 1, wherein the heat conducting gel (4) is a flowing two-agent liquid heat conducting gel (4).
3. The calibrating device applied to the distributed optical fiber temperature measuring system according to claim 1, wherein the width of the accommodating groove (3) is 2.5-4 cm.
4. The calibrating device applied to the distributed optical fiber temperature measuring system according to claim 3, wherein the calibration box (1) is made of aluminum material.
5. The calibrating device applied to the distributed optical fiber temperature measuring system according to claim 4, wherein screw holes (6) are respectively formed at 4 corner ends of the calibration box (1), and the screw holes (6) longitudinally penetrate through the calibration box (1).
6. The calibrating device applied to the distributed optical fiber temperature measuring system according to any one of claims 1 to 5, wherein the bottom of the accommodating groove (3) is provided with a fiber inlet (7) in the horizontal direction, the opening of the accommodating groove (3) is provided with a fiber outlet (8) in the horizontal direction, and both the fiber inlet (7) and the fiber outlet (8) extend out of the calibration box (1).
7. The calibrating device applied to the distributed optical fiber temperature measuring system according to claim 6, wherein the fiber inlet (7) and the fiber outlet (8) are provided with a sleeve (9) for protecting the sensing optical fiber (2), the sleeve (9) is adhered to the calibration box (1), and the sleeve (9) is made of a rubber material.
8. The calibration device applied to the distributed optical fiber temperature measurement system according to claim 1, wherein the temperature sensor (5) adopts a thermocouple or a platinum resistor.
9. The calibrating device applied to the distributed optical fiber temperature measuring system according to claim 1, wherein the optical fiber temperature measuring device further comprises an upper cover (10) for sealing the accommodating groove (3), the upper cover (10) is a cylindrical structure, and the upper cover (10) is in interference fit with the calibration box (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922485199.2U CN211178802U (en) | 2019-12-30 | 2019-12-30 | Calibration device applied to distributed optical fiber temperature measurement system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922485199.2U CN211178802U (en) | 2019-12-30 | 2019-12-30 | Calibration device applied to distributed optical fiber temperature measurement system |
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| Publication Number | Publication Date |
|---|---|
| CN211178802U true CN211178802U (en) | 2020-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922485199.2U Active CN211178802U (en) | 2019-12-30 | 2019-12-30 | Calibration device applied to distributed optical fiber temperature measurement system |
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| Country | Link |
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| CN (1) | CN211178802U (en) |
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- 2019-12-30 CN CN201922485199.2U patent/CN211178802U/en active Active
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