Fixing device for fiber grating sensor

Abstract

The utility model relates to a fixing device for a fiber grating sensor, and relates to the technical field of sensor fixing devices. The device comprises a fixed base, a mounting shell and a winding column are arranged on the fixed base, a fiber bragg grating sensor is detachably mounted in the mounting shell, and a connecting line, located outside the mounting shell, of the fiber bragg grating sensor is wound on the winding column; the outer side of the winding column is sleeved with a protective cover, a containing groove is formed in the protective cover, the end, away from the fixed base, of the winding column is located in the containing groove, and the protective cover is detachably installed on the winding column. The optical fiber grating sensor connecting line fixing device has the effect of fixing the optical fiber grating sensor connecting line more conveniently.

Description

Technical Field

[0001] This application relates to the technical field of sensor fixing devices, and in particular, to a fixing device for fiber Bragg grating sensors. Background Art

[0002] Fiber Bragg grating sensors belong to a branch of fiber optic sensors. Fiber Bragg grating sensors can directly measure physical quantities such as temperature and strain. During the use of fiber Bragg gratings, the fiber Bragg grating sensors are fixed on a specific device to ensure the stability of the fiber Bragg grating sensors. They sense and transmit this information through the wavelength change of light in the optical fiber, and have high sensitivity and anti-interference ability.

[0003] The above-mentioned prior art has the following problems: In the prior art, fiber Bragg grating sensors are usually fixed with screws and fixing brackets, and the redundant wires on both sides of the fiber Bragg grating sensors are bundled with cable ties. After long-term use, they will fall off. And when it is necessary to adjust the wires of the fiber Bragg grating sensors, it is necessary to cut the cable ties and rebundle them, which is very troublesome. Utility Model Content

[0004] In order to more conveniently fix the connecting wires of fiber Bragg grating sensors, this application provides a fixing device for fiber Bragg grating sensors.

[0005] The fixing device for fiber Bragg grating sensors provided by this application adopts the following technical solutions:

[0006] A fixing device for fiber Bragg grating sensors includes a fixing base, on which an installation shell and a winding column are provided. The fiber Bragg grating sensor is detachably installed in the installation shell, and the connecting wires of the fiber Bragg grating sensor located outside the installation shell are wound around the winding column; a protective cover is sleeved outside the winding column, a receiving groove is opened on the protective cover, and the end of the winding column away from the fixing base is located in the receiving groove, and the protective cover is detachably installed on the winding column.

[0007] By adopting the above technical solutions, after the fiber Bragg grating sensor is installed in the installation shell, the redundant sensors of the fiber Bragg grating sensor can be wound around the winding column, so as to be able to collect and sort out the redundant connecting wires; after sorting, then cover the protective cover, on the one hand, it can play a certain restrictive role on the connecting wires on the winding column, and on the other hand, it can also protect the connecting wires wound around the winding column. When it is necessary to adjust the fiber Bragg grating sensor, it can be conveniently achieved by disassembling the protective cover and unwinding the connecting wires from the winding column, so as to more conveniently fix the connecting wires of the fiber Bragg grating sensor.

[0008] Preferably, the winding column is provided with a winding groove along its own axial spiral, and the connecting wire is slidably plugged into the winding groove.

[0009] By adopting the above technical solution, the connection line can be limited by setting the winding groove, further preventing the connection line from shaking on the winding column.

[0010] Preferably, a heat dissipation groove is provided on the inner side of the winding column, and a plurality of heat dissipation holes are provided on the winding column along the circumference of the winding groove, and the heat dissipation holes are connected to the heat dissipation groove.

[0011] By adopting the above technical solution and dissipating heat by setting heat dissipation holes and heat dissipation grooves, the influence of the heat generated by the piled-up connecting wires on the use effect of the fiber grating sensor can be reduced.

[0012] Preferably, a limit block is provided at the end of the winding column away from the fixed base.

[0013] By adopting the above technical solution, the limiting block can be provided to limit the connecting wire on the winding column, thereby preventing the connecting wire from falling off the winding column as much as possible.

[0014] Preferably, a wire clamping column is provided on the limit block, and a wire clamping groove for clamping and cooperating with the connecting wire is opened on the wire clamping column.

[0015] By adopting the above technical solution and providing a wire clamping groove, the connecting wire can be clamped in the wire clamping groove after being wound around the winding column, thereby playing a fixing role.

[0016] Preferably, a guide ring is provided on the limit block, and the connecting line is passed through the guide ring.

[0017] By adopting the above technical solution, the connecting wire wound on the winding column can be guided to the outside of the winding column by using the guide ring, and at the same time, a certain limiting effect can be played on the connecting wire.

[0018] Preferably, a first connecting portion is provided on the winding column, and a second connecting portion is provided in the protective cover corresponding to the first connecting portion, and the first connecting portion and the second connecting portion are snap-fitted, magnetically fitted or threadedly fitted.

[0019] By adopting the above technical solution, the protective cover and the winding column are detachably connected by using the first connecting part and the second connecting part through snap-fitting, magnetic fitting or threaded fitting.

[0020] Preferably, a fixing rod is fixedly connected to one side of the mounting shell, and a protective cover is rotatably connected to the outer side of the fixing rod.

[0021] By adopting the above technical solution, by providing a protective cover, it is possible to provide a certain degree of protection for the fiber Bragg grating sensor in the installation shell, and as much as possible prevent the fiber Bragg grating sensor from being physically damaged or contaminated during use.

[0022] Preferably, coil springs are sleeved at both ends of the fixed rod, one side of the coil spring is fixedly connected to the fixed rod, and the other side of the coil spring is fixedly connected to the protective cover.

[0023] By adopting the above technical solution, by providing a coil spring, it is possible to drive the protective cover to achieve automatic closing by using the elastic deformation ability of the coil spring itself, which is more convenient.

[0024] Preferably, a spring pin is slidably connected through one side of the installation shell.

[0025] By adopting the above technical solution, by providing a spring pin, it is possible to achieve a detachable connection between the fiber Bragg grating sensor and the installation shell, thereby improving the overall flexibility.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. By providing a winding column, an orderly winding method for the connecting wire is provided, and the loosening or disorder of the connecting wire is avoided as much as possible; by providing a limiting block and a winding groove, the fixing of the connecting wire is further ensured, the protective cover can effectively protect the connecting wire, and through the detachable connection between the protective cover and the winding column, the flexible adjustment of the fiber Bragg grating sensor can be more conveniently realized;

[0028] 2. By providing heat dissipation grooves and heat dissipation holes, it helps to effectively dissipate heat and reduce the influence of the heat generated by the connecting wire on the performance of the fiber Bragg grating sensor during the operation of the fiber optic grating sensor.

[0029] 3. By adopting a protective cover, it is possible to prevent the fiber Bragg grating sensor from being physically damaged or contaminated during use, and by using a coil spring, the protective cover can automatically return to its position after the fiber Bragg grating sensor is installed in the installation shell, simplifying the operation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is an exploded structural schematic diagram of an embodiment of the present application;

[0031] Figure 2 is Figure 1 the enlarged view of part A in

[0032] Figure 3 is an exploded structural schematic diagram of the present application embodiment for showing the winding column and the protective cover;

[0033] Figure 4It is a schematic cross-sectional structure diagram for showing the winding column and the protective cover in the embodiments of the present application.

[0034] Reference numerals:

[0035] 1. Fixed base; 2. Installation shell; 21. Spring pin; 22. Wiring groove; 23. Protective cover; 241. Fixed rod; 242. Torsion spring; 3. Winding column; 31. Winding groove; 32. Limiting block; 33. Wire clamping post; 331. Wire clamping groove; 34. Guide ring; 35. First connecting part; 36. Heat dissipation groove; 37. Heat dissipation hole; 4. Protective cover; 41. Accommodating groove; 42. Second connecting part; 43. Wire outlet groove. Detailed implementation manners

[0036] The following further elaborates on the present application in conjunction with the attached Figures 1-4 drawings.

[0037] The embodiments of the present application disclose a fixing device for a fiber Bragg grating sensor.

[0038] Referring to Figure 1 , a fixing device for a fiber Bragg grating sensor includes a fixed base 1. One side of the fixed base 1 is fixedly installed with an installation shell 2 for fixing the fiber Bragg grating sensor. Winding columns 3 are further provided on the opposite sides of the installation shell 2. The excess connecting lines at both ends can be wound around the winding columns 3 to ensure the orderly winding of the connecting lines as much as possible. The end of the winding column 3 away from the fixed base 1 is detachably connected with a protective cover 4. The protective cover 4 passes through and is sleeved on the end of the winding column 3, so as to protect the connecting lines.

[0039] Referring to Figure 1 , the fixed base 1 is in the shape of a rectangular plate as a whole, and the fixed base 1 is used for fixedly installing on the equipment where the fiber Bragg grating sensor needs to be installed. The installation shell 2 is in the shape of a cuboid as a whole. The length direction surface of the installation shell 2 is parallel to the length direction surface of the fixed base 1, and the side surface of the installation shell 2 away from the fixed base 1 is set as an open surface, so that the fiber Bragg grating sensor can be placed in the installation shell 2. A spring pin 21 is slidably connected through one of the side walls in the length direction of the installation shell 2, and the spring pin 21 is located in the middle of the side of the installation shell 2 away from the fixed base 1. The fiber Bragg grating sensor is limited by the spring pin 21. When it needs to be taken out, the spring pin 21 is pulled, and then the fiber Bragg grating sensor can be taken out. Wiring grooves 22 are opened on two opposite side walls of the installation shell 2 adjacent to the spring pin 21, and the wiring grooves 22 are grooved in the direction away from the fixed base 1, so that the connecting lines of the fiber Bragg grating sensor are led out to the outside of the installation shell 2.

[0040] Referring to Figure 1 and Figure 2Preferably, a protective cover 23 is rotatably installed on the side of the mounting shell 2 away from the fixed base 1 through a rotating assembly, and the fiber Bragg grating sensor is located between the mounting shell 2 and the protective cover 23, thereby further improving the protection of the fiber Bragg grating sensor. Among them, the protective cover 23 is set to a transparent material such as acrylic, which is convenient for viewing the fiber Bragg grating sensor, and the protective cover 23 can prevent the fiber Bragg grating sensor from being physically damaged or contaminated during use as much as possible. The rotating assembly includes a fixed rod 241 and a coil spring 242. The fixed rod 241 is in the shape of a cylindrical rod as a whole, and the length direction of the fixed rod 241 is parallel to the length direction of the mounting shell 2. The fixed rod 241 is arranged on the outer side wall of the mounting shell 2 where the spring pin 21 is arranged, and the fixed rod 241 is arranged on the side of the spring pin 21 away from the fixed base 1. The outer side of the fixed rod 241 is rotatably connected to the protective cover 23, and two coil springs 242 are provided, and the two coil springs 242 are respectively sleeved on both ends of the fixed rod 241. One side of the coil spring 242 is fixedly connected to the fixing rod 241, and the other side of the coil spring 242 is fixedly connected to the protective cover 23. When installing the fiber grating sensor, open the protective cover 23, and lead out the redundant connecting wires of the fiber grating sensor through the wiring groove 22; after the fiber grating sensor is installed, loosen the protective cover 23, and the coil spring 242 drives the transparent cover to return to its original position automatically.

[0041] refer to Figure 1 and Figure 3 , two winding columns 3 are arranged on opposite sides of the length direction of the mounting shell 2. The winding columns 3 are cylindrical in shape as a whole, and the axial direction of the winding columns 3 is perpendicular to the length direction surface of the fixed base 1. One end of the winding column 3 is fixedly connected to the fixed base 1, and the winding column 3 is provided with a winding groove 31 along its own axial spiral. The redundant connectors of the fiber grating sensor can be wound in the winding groove 31, so as to fix the connectors. The other end of the winding column 3 away from the fixed base 1 is fixedly connected to a limit block 32. The limit block 32 is cylindrical in shape as a whole, and the axis of the limit block 32 coincides with the axis of the winding column 3, so as to prevent the connection line from falling off the winding column 3 as much as possible. A wire clamping column 33 is also arranged on the outer side of the limit block 32 away from the fixed base 1. The wire clamping column 33 is cylindrical in shape as a whole, and the axis of the wire clamping column 33 coincides with the axis of the winding column 3. The end surface of the wire clamping column 33 away from the winding column 3 is provided with a wire clamping groove 331, which is used to clamp the connecting wire to further fix the connecting wire. Preferably, the same side of the limit block 32 where the wire clamping column 33 is provided is also fixedly connected with a guide ring 34, which is provided at the edge of the limit block 32, and the connecting wire can be passed through the guide ring 34.

[0042] refer to Figure 3 and Figure 4, the protective cover 4 is generally cylindrical in shape, and the axis of the protective cover 4 coincides with the axis of the winding column 3. An accommodation groove 41 is provided on one side of the protective cover 4 close to the winding column 3. When the protective cover 4 is installed on the winding column 3 through a detachable structure, the winding column 3 can be entirely located within the accommodation groove 41. The protective cover 4 is provided with an emergence groove corresponding to the guiding ring 34, so that the corresponding connecting wire can be led out of the protective cover 4 through the guiding ring 34.

[0043] Reference Figure 3 and Figure 4 , the detachable structure includes a first connecting portion 35 provided at the end of the wire clamping column 33 and a second connecting portion 42 provided on the bottom of the accommodation groove 41. The first connecting portion 35 and the second connecting portion 42 can be detachably connected by means of snap-fit, magnetic attraction fit, screw fit, etc. In this embodiment, the first connecting portion 35 and the second connecting portion 42 are provided as magnets for magnetic attraction fit. The simple installation of the protective cover 4 can be achieved through the magnetic attraction structure, so as to facilitate the arrangement and fixation of the redundant connecting wires.

[0044] Reference Figure 4 , preferably, a heat dissipation cavity is internally provided in the winding column 3 along its own axis direction, and a plurality of heat dissipation holes 37 communicating with the heat dissipation cavity are also provided on the winding column 3, and the plurality of heat dissipation holes 37 are evenly provided on the bottom of the heat dissipation groove 36 along the circumferential direction of the heat dissipation groove 36. Heat will be generated during the use of the connecting wire. When the connecting wire is wound in the winding groove 31, the connecting wire is likely to be wound too much or the connecting wires are wound together. At this time, heat dissipation is carried out through the heat dissipation holes 37 and the heat dissipation groove 36 to prevent the heat generated by the accumulation of the connecting wires from affecting the use effect of the fiber Bragg grating sensor.

[0045] The implementation principle of a fixing device for a fiber Bragg grating sensor according to an embodiment of the present application is as follows: The fixing base 1 is fixed on the device to be installed, and then the fiber Bragg grating sensor is placed into the fiber Bragg grating sensor installation shell 2, and the fiber Bragg grating sensor is limited by the spring pin 21. When it is necessary to take out, the spring pin 21 is pulled, and the fiber Bragg grating sensor can be taken out. The redundant connecting wires at both ends of the fiber Bragg grating sensor can be wound around the winding column 3 to prevent the cables from being loose or messy. After the connecting wire is wound, it is guided out of the winding column 3 through the guiding ring 34, and then the installation shell 2 is installed to play a protective role for the winding column 3 and the connecting wires on the winding column 3.

[0046] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A fixing device for a fiber Bragg grating sensor, characterized in that: It includes a fixed base (1), on which an installation shell (2) and a winding column (3) are provided. The fiber Bragg grating sensor is detachably installed in the installation shell (2), and the connecting wire of the fiber Bragg grating sensor located outside the installation shell (2) is wound around the winding column (3); a protective cover (4) is sleeved outside the winding column, a receiving groove (41) is formed on the protective cover (4), and the end of the winding column (3) away from the fixed base (1) is located in the receiving groove (41), and the protective cover (4) is detachably installed on the winding column (3).

2. The fixing device for a fiber Bragg grating sensor according to claim 1, characterized in that: The winding column (3) is spirally provided with a winding groove (31) along its own axis, and the connecting wire is slidably inserted and matched with the winding groove (31).

3. The fixing device for a fiber Bragg grating sensor according to claim 2, characterized in that: A heat dissipation groove (36) is formed inside the winding column (3), a plurality of heat dissipation holes (37) are formed on the winding column (3) along the circumference of the winding groove (31), and the heat dissipation holes (37) are communicated with the heat dissipation groove (36).

4. The fixing device for a fiber Bragg grating sensor according to claim 1, wherein: A limiting block (32) is provided at the end of the winding column (3) away from the fixed base (1).

5. The fixing device for an optical fiber grating sensor according to claim 4, characterized in that: A wire clamping column (33) is provided on the limiting block (32), and a wire clamping groove (331) for clamping and matching with the connecting wire is formed on the wire clamping column (33).

6. The fixing device for an optical fiber grating sensor according to claim 4, characterized in that: A guiding ring (34) is provided on the limiting block (32), and the connecting wire passes through the guiding ring (34).

7. The fixing device for an optical fiber grating sensor according to claim 1, wherein: A first connecting portion (35) is provided on the winding column (3), and a second connecting portion (42) corresponding to the first connecting portion (35) is provided in the protective cover (4), and the first connecting portion (35) and the second connecting portion (42) are in clamping fit, magnetic attraction fit or threaded fit.

8. The fixing device for an optical fiber grating sensor according to claim 1, characterized in that: One side of the installation shell (2) is fixedly connected with a fixed rod (241), and a protective cover (23) is rotatably connected to the outside of the fixed rod (241).

9. The fixing device for an optical fiber grating sensor according to claim 8, characterized in that: Both ends of the fixed rod (241) are sleeved with a coil spring (242), one side of the coil spring (242) is fixedly connected to the fixed rod (241), and the other side of the coil spring (242) is fixedly connected to the protective cover (23).

10. The fixing device for an optical fiber grating sensor according to claim 1, characterized in that: A spring pin (21) is slidably connected through one side of the installation shell (2).

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