Optical fiber vibration reduction device

Abstract

The utility model discloses a kind of optical fiber damping devices, it includes fixed mechanism and support mechanism, fixed mechanism is used to fix the both ends of optical fiber sensor, support mechanism includes multiple interval arranged supports, multiple supports are fixedly arranged along the extension direction of optical fiber sensor, support includes limiting portion, limiting portion is opened with perforation, and perforation portion is used for the optical fiber sensor through setting;Two pairs of ears are provided on limiting portion, and arch-shaped support portion is formed by bending and extending on both sides of limiting portion.The utility model places multiple supports at the middle position of optical fiber sensor by interval, realizes the support to optical fiber sensor using support, cooperates and designs support portion into arch-shaped structure, effectively improves the vibration buffer space of limiting portion, and then weaken the influence caused by ship body vibration to optical fiber sensor detection.

Description

Technical Field

[0001] The utility model relates to the technical field of fiber optic sensors, and in particular to a fiber optic vibration damping device. Background Art

[0002] A fiber optic sensor is a sensor that converts the state of a measured object into a measurable optical signal. The fiber optic sensor includes an optical fiber and a modulator. Its working principle is to send the light beam incident from a light source into the modulator through the optical fiber, interact with the external measured parameters in the modulator, so that the optical properties of the light, such as the intensity, wavelength, frequency, phase, polarization state, etc. of the light, change and become a modulated optical signal, and then send it through the optical fiber into an optoelectronic device, and obtain the measured parameters after being demodulated.

[0003] As one of the components of the wet end in the hull system, the fiber optic sensor needs to be installed on the outer shell on both sides of the hull. Its installation position is not far from the noise source of the hull. The noise and vibration of the hull will be transmitted to the fiber optic sensor through the shell, and then the use effect of the fiber optic sensor will be affected.

[0004] Therefore, it is urgent to propose a fiber optic vibration damping device to solve the problems raised. Content of the Utility Model

[0005] Based on this, the purpose of the utility model is to provide a fiber optic vibration damping device, which reduces the vibration influence on the fiber optic sensor and effectively improves the detection effect of the fiber optic sensor.

[0006] To solve the above technical problems, the technical solution adopted by the utility model is: a fiber optic vibration damping device, which includes a fixing mechanism and a supporting mechanism. The fixing mechanism is used to fix both ends of the fiber optic sensor. The supporting mechanism includes a plurality of brackets arranged at intervals. The plurality of brackets are fixedly arranged along the extending direction of the fiber optic sensor. Each bracket includes a limiting part. A through hole is provided on the limiting part. The through hole is used for the fiber optic sensor to pass through. Two butt ears are provided on the limiting part. The two sides of the limiting part are bent and extended to form an arched supporting part.

[0007] Further, a first reinforcing rib is arranged between the supporting part and the limiting part.

[0008] Further, a reinforcing part is arranged above the supporting part. The reinforcing part is fixedly connected to the supporting part and the limiting part respectively.

[0009] Further, the reinforcing part is a hollow panel structure. The reinforcing part and the supporting part and the limiting part enclose two hollow structures with a "mouth" - shaped cross - section.

[0010] Further, a second reinforcing rib is arranged between the supporting part and the reinforcing part.

[0011] Further, the bracket is made of rubber material.

[0012] Furthermore, the support portion is provided with fixing portions on both sides. The fixing portions are block-shaped structures with threaded holes. Bolts pass through the threaded holes to fix the bolts to the mounting panel.

[0013] Furthermore, a sound insulation layer is attached to the surface of the mounting panel at the location where the fiber optic sensor is installed, and the bracket is fixed above the sound insulation layer, which is made of sound insulation cotton.

[0014] Furthermore, the fiber optic sensors are spaced apart on the outer side of the ship's hull, and a flow guide is provided on the outer side of the ship's hull. The flow guide is fixed on the mounting panel and covers the fixing mechanism and support structure.

[0015] Furthermore, the fixing mechanism includes two fixing seats, with hooks respectively provided at both ends of the fiber optic sensor, and fixing rods provided on the fixing seats, with the fixing rods passing through the hooks.

[0016] In summary, the fiber optic vibration damping device of this utility model supports the fiber optic sensor by placing multiple supports at intervals in the middle of the fiber optic sensor. The supports are designed as an arched structure, which effectively increases the vibration buffer space of the limiting part, thereby reducing the impact of ship vibration on the detection of the fiber optic sensor. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the installation of an optical fiber vibration damping device according to the present invention;

[0018] Figure 2 This is a schematic diagram of the installation of the fiber optic vibration damping device after the concealed flow guide cover is installed according to this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the bracket of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the fixing base of this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the fixing base of this utility model after the second sleeve is hidden;

[0022] Figure 6 This is a schematic diagram of the structure of the fixing base of this utility model after the first sleeve is hidden;

[0023] Figure 7 This is a schematic diagram of the structure of the first sleeve of this utility model;

[0024] Figure 8 This is a schematic diagram of the installation of the fiber optic sensor of this utility model. Detailed Implementation

[0025] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Please see Figures 1 to 8 This utility model discloses a fiber optic vibration damping device, installed on the sides of a ship's hull, for fixing fiber optic sensors 500. The fiber optic vibration damping device includes a fixing mechanism 100 and a support mechanism 200, both fixed to a mounting panel 300. Specifically, the fixing mechanism 100 and the support mechanism 200 are both used to fix the fiber optic sensors 500 to the mounting panel 300 on the ship's hull. Specifically, the fiber optic sensor 500 includes an optical fiber and a regulator, which is known technology and will not be described in detail here. The fiber optic sensors 500 are spaced apart on the outer side of the ship's hull. A flow guide 400 is provided on the outer side of the ship's hull and fixed to the mounting panel 300. The flow guide 400 covers the fixing mechanism 100 and the support mechanism 200, thereby reducing the erosion of the fixing mechanism 100, the support mechanism 200 and the fiber optic sensors 500 by external water flow, thus reducing the impact on the service life of the products.

[0029] The support mechanism 200 includes multiple spaced brackets 210, which are fixedly arranged along the extension direction of the fiber optic sensor 500. Specifically, the multiple brackets 210 are fixed on the mounting panel 300. The fixing mechanism 100 is used to fix both ends of the fiber optic sensor 500. The fixing mechanism 100 can use clamping, snapping, hooking or other structures to fix both ends of the fiber optic sensor 500. This is a known structure and will not be described in detail here. In this embodiment, the fixing mechanism 100 includes two fixing seats 110. Both ends of the fiber optic sensor 500 are fixed on the fixing seats 110 respectively, thereby achieving the initial fixing of the fiber optic sensor 500. The brackets 210 are provided with through holes 201. After the fiber optic sensor 500 passes through the through holes 201 of the multiple brackets 210, the brackets 210 achieve the fixing and limiting operation of the fiber optic sensor 500.

[0030] Specifically, the fiber optic sensor 500 is provided with hooks 510 at both ends, and the fixing base 110 is provided with a fixing rod 111. The fixing rod 111 passes through the hooks 510 to achieve the fixing operation of the two ends of the fiber optic sensor 500.

[0031] In one embodiment, the bracket 210 has an axisymmetric structure and includes a limiting part 211, which is annular in shape. The fiber optic sensor 500 passes through the limiting part 211, and a through hole 201 is formed on the limiting part 211. Two mating ears 212 are provided on the limiting part 211. By adjusting the distance between the two mating ears 212, the limiting part 211 can fix and limit the fiber optic sensor 500. In this embodiment, the distance between the two mating ears 212 is adjusted by a bolt structure, which also closes the through hole 201, so that the fiber optic sensor 500 is stably placed in the through hole 201 and will not come out of the limiting part 211.

[0032] The limiting part 211 bends and extends on both sides to form an arched support part 213. Designing the support part 213 into an arch shape can effectively enhance the structural stability of the bracket 210 and effectively increase the vibration buffer space of the limiting part 211. The fiber optic sensor 500 needs to pass through the limiting part 211 for limiting settings, which can reduce the impact of ship vibration on the detection of the fiber optic sensor 500.

[0033] Alternatively, the support 213 can also be designed as a hollow panel structure, and the lower end of the support 213 can be designed as an L-shaped structure, which can effectively enhance the structural stability of the bracket 210 and effectively increase the vibration buffer space of the limiting part 211. The fiber optic sensor 500 needs to pass through the limiting part 211 for limiting, which can reduce the impact of hull vibration on the detection of the fiber optic sensor 500.

[0034] In one embodiment, a reinforcing portion 214 is provided above the supporting portion 213. The reinforcing portion 214 is fixedly connected to the supporting portion 213 and the limiting portion 211 respectively, thereby further enhancing the structural stability of the bracket 210. The reinforcing portion 214 is a hollow panel structure. The reinforcing portion 214 and the supporting portion 213 and the limiting portion 211 enclose two hollow structures with a "mouth" - shaped cross - section. While saving the materials of the bracket 210, it also improves the elastic performance of the bracket 210, thereby weakening the transmission effect of the hull vibration, reducing the vibration influence on the fiber optic sensor 500, and effectively improving the detection effect of the fiber optic sensor 500.

[0035] In one embodiment, fixing portions 215 are provided on both sides of the supporting portion 213. The fixing portions 215 are block - shaped structures. The fixing portions 215 are fixed to the mounting panel 300 through bolt members, thereby realizing the fixed installation of the bracket 210. Specifically, threaded holes 2151 are formed in the fixing portions 215, and the bolt members pass through the threaded holes 2151 and are fixed to the mounting panel 300, thereby realizing the fixed installation of the bracket 210.

[0036] In one embodiment, a first reinforcing rib 216 is provided between the supporting portion 213 and the limiting portion 211, thereby improving the connection stability between the supporting portion 213 and the limiting portion 211, and further improving the service life of the bracket 210.

[0037] In one embodiment, a second reinforcing rib 217 is provided between the supporting portion 213 and the reinforcing portion 214, thereby improving the connection stability between the supporting portion 213 and the reinforcing portion 214, and further improving the service life of the bracket 210.

[0038] In one embodiment, the bracket 210 is made of rubber. Rubber belongs to one of the high - molecular viscoelastic damping materials. Using rubber materials in the field of vibration and noise reduction can absorb vibration energy by the viscoelasticity between molecules and convert it into heat energy and dissipate it, thereby achieving the effect of vibration and noise reduction.

[0039] In one embodiment, a sound insulation layer is attached to the surface of the mounting panel 300 at the installation location of the fiber optic sensor 500. The bracket 210 is fixed above the sound insulation layer, thereby reducing the noise influence transmitted through the mounting panel 300. Among them, the sound insulation layer is made of materials such as sound - insulating cotton.

[0040] In one embodiment, the fairing 400 is made of fiberglass. A damping rubber layer is attached to the outer surface of the fairing 400. The damping rubber layer is used to reduce the influence of flow noise on the working quality of the fiber optic sensor 500.

[0041] In one embodiment, the mounting base 110 includes a base 112, with a slot 1121 in the middle of the base 112 for the light from the fiber optic sensor 500 to pass through. The base 112 has mounting plates 1122 on both sides of the slot 1121, and mounting holes 1123 are provided on the mounting plates 1122. Mounting seats 113 are inserted into the mounting holes 1123, and mounting rods 111 are connected to the two mounting seats 113 respectively. By holding the hooks 510 on the fiber optic sensor 500 onto the corresponding mounting rods 111, the two ends of the fiber optic sensor 500 are fixed.

[0042] Specifically, the mounting base 113 includes a first sleeve 1131 and a second sleeve 1132. An elastic element 1133 is provided between the first sleeve 1131 and the second sleeve 1132. The first sleeve 1131 includes a first mounting post 11311 and a first mounting cylinder 11312 connected to each other. The first mounting post 11311 passes through the fixing hole 1123 and is locked onto the fixing plate 1122. One end of the elastic element 1133 is placed inside the first mounting cylinder 11312. The second sleeve 1132 includes a positioning plate 11321 and a second mounting cylinder 11322. 322, the first mounting cylinder 11312 and the second mounting cylinder 11322 are arranged opposite to each other. The other end of the elastic element 1133 is placed inside the second mounting cylinder 11322. The second mounting cylinder 11322 is arranged on one side of the positioning plate 11321. The extension direction of the fixing rod 111 is perpendicular to the extension direction of the second mounting cylinder 11322. The fixing rod 111 is snapped onto the positioning plate 11321. By snapping the hook 510 at one end of the fiber optic sensor 500 onto the fixing rod 111, the fiber optic sensor 500 and the fixing rod 111 are connected. The connection operation; In this embodiment, the elastic element 1133 is a spring structure, and the two ends of the fiber optic sensor 500 are respectively fixed on the corresponding fixing rods 111. The structural principle of fixing the fiber optic sensor 500 is as follows: According to the initial length and elongation of the fiber optic sensor 500, the maximum length and minimum length of the fiber optic sensor 500 can be known, so the fixing seat 110 can be conveniently placed on the mounting panel 300 at a suitable position for welding and fixing; Finally, according to the actual situation on site, elastic elements 1133 of different lengths can be placed in the mounting seat 113 to ensure that the fiber optic sensor 500 is in a slightly stretched state, ensuring the straightness of the fiber optic sensor 500 and improving the fixing effect of the fiber optic sensor 500; In this embodiment, since the fiber optic sensor 500 is in a stretched state, the restoring force of the fiber optic sensor 500 can apply a force to the fixing rod 111, thereby ensuring that the second sleeve 1132 will not be too far away from the first sleeve 1131. While ensuring the stable placement of the elastic element 1133, the stability of the mounting seat 113 structure is also improved.

[0043] In one embodiment, a docking post 11313 extends from the inside of the first sleeve 1131 toward the second sleeve 1132, and a docking sleeve 11323 extends from the inside of the second sleeve 1132 toward the first sleeve 1131. The docking sleeve 11323 is sleeved on the docking post 11313, thereby ensuring the stability of the connection between the first sleeve 1131 and the second sleeve 1132. In addition, it also ensures that the elastic element 1133 will not detach from the accommodating space enclosed by the first sleeve 1131 and the second sleeve 1132, thereby ensuring the working quality of the device.

[0044] In one embodiment, to further adjust the elongation state of the fiber optic sensor 500, an adjusting nut 114 can be sleeved on the outer side of the first mounting post 11311. By setting different numbers of adjusting nuts 114, the distance between the first sleeve 1131 and the fixing plate 1122 can be adjusted to adjust the elongation state of the fiber optic sensor 500. When the distance between the two fixing seats 110 on the mounting panel 300 is too short to ensure that the fiber optic sensor 500 is in the elongated state, multiple adjusting nuts 114 can be placed to ensure the elongation state of the fiber optic sensor 500.

[0045] In the specific assembly of this utility model, the two ends of the fiber optic sensor 500 are respectively fixed on the fixing mechanism 100, and the middle part of the fiber optic sensor 500 is supported by the bracket 210 of the support mechanism 200. In addition, the support part 213 of the bracket 210 is designed as an arched structure, which effectively increases the vibration buffer space of the limiting part 211, thereby reducing the impact of ship vibration on the detection of the fiber optic sensor 500.

[0046] In summary, the fiber optic vibration damping device of this utility model provides support for the fiber optic sensor 500 by placing multiple supports 210 at intervals in the middle of the fiber optic sensor 500 and designing the support part 213 as an arched structure, thereby effectively increasing the vibration buffer space of the limiting part 211 and reducing the impact of ship vibration on the detection of the fiber optic sensor 500.

[0047] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A fiber optic vibration damping device for fixing a fiber optic sensor, characterized in that: It includes a fixing mechanism and a supporting mechanism. The fixing mechanism is used to fix both ends of the fiber optic sensor. The supporting mechanism includes multiple brackets arranged at intervals. The multiple brackets are fixedly arranged along the extending direction of the fiber optic sensor. Each bracket includes a limiting portion, and a through hole is formed in the limiting portion. The through hole is used for the fiber optic sensor to pass through. Two butting ears are arranged on the limiting portion, and arched supporting portions are formed by bending and extending both sides of the limiting portion.

2. The fiber optic vibration damping device according to claim 1, characterized in that: A first reinforcing rib is arranged between the supporting portion and the limiting portion.

3. The fiber optic vibration damping device according to claim 1, characterized in that: A reinforcing portion is arranged above the supporting portion, and the reinforcing portion is fixedly connected to the supporting portion and the limiting portion respectively.

4. The fiber optic vibration damping device according to claim 3, characterized in that: The reinforcing portion is a hollow panel structure, and the reinforcing portion, the supporting portion and the limiting portion enclose two hollow structures with a "mouth" - shaped cross - section.

5. The fiber optic vibration damping device according to claim 3, characterized in that: A second reinforcing rib is arranged between the supporting portion and the reinforcing portion.

6. The fiber optic vibration damping device according to claim 1, characterized in that: The bracket is made of rubber material.

7. The fiber optic vibration damping device according to claim 1, characterized in that: Fixing portions are arranged on both sides of the supporting portion. The fixing portions are block - shaped structures, and threaded holes are formed in the fixing portions. Bolt members pass through the threaded holes and are used to be fixed on the mounting panel.

8. The fiber optic vibration damping device according to claim 7, characterized in that: A sound - insulating layer is attached to the surface of the mounting panel at the installation position of the fiber optic sensor. The bracket is fixed above the sound - insulating layer. The sound - insulating layer is made of sound - insulating cotton material.

9. The fiber optic vibration damping device according to claim 7, characterized in that: The fiber optic sensors are arranged at intervals on the outer side of the ship's hull. A fairing is arranged on the outer side of the ship's hull. The fairing is fixed on the mounting panel, and the fairing covers the fixing mechanism and the supporting structure.

10. The fiber optic vibration damping device according to claim 1, characterized in that: The fixing mechanism includes two fixing seats. Hanging hooks are respectively arranged at both ends of the fiber optic sensor. A fixing rod is arranged on the fixing seat, and the fixing rod passes through the hanging hook.

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