Fiber grating sensor stress support

Abstract

The utility model provides a kind of fiber grating sensor stress support, including two groups of fixed frame respectively by upper arc plate and lower arc plate, the top of upper arc plate is uniformly provided with fixed seat, the top of fixed seat is uniformly installed with clamping plate, the center of two groups of clamping plate is uniformly provided with clamping groove, and corresponding fiber grating sensor body is placed between two groups of clamping grooves;One side of one group of fixed frame is connected with U-shaped tube, the inside of two groups of fixed seat is uniformly horizontally provided with the through hole corresponding with the two long poles of U-shaped tube, and the two long poles of U-shaped tube are inserted in corresponding through hole. The utility model is provided with through hole on the top fixed seat of multiple upper arc plates, and the two long poles of U-shaped tube are inserted in corresponding through hole, so that corresponding fixed seat is in the same position, avoids deviation due to installation angle, so that the installation of fiber grating sensor is difficult, and significantly improves installation efficiency and stability.

Description

Technical Field

[0001] This utility model belongs to the technical field of fiber optic grating sensor mounting brackets, and more specifically, it relates to a fiber optic grating sensor stress bracket. Background Technology

[0002] Fiber Bragg grating sensors are core optical sensing devices in modern engineering monitoring, among which... Fiber Bragg grating displacement sensors are a typical example, playing an irreplaceable role in pipeline health monitoring due to their superior characteristics such as resistance to electromagnetic interference, strong corrosion resistance, and ease of networking. They can capture real-time displacement changes in pipelines caused by factors such as deformation, settlement, and corrosion, providing accurate data support for the safe operation of pipelines. When installing a fiber optic displacement sensor, multiple stress supports are required to securely fix it to the pipe surface.

[0003] However, when installing fiber Bragg grating sensor stress supports onto pipes, the lack of a dedicated alignment device easily leads to angular misalignment between multiple supports. This misalignment not only... The installation process of fiber Bragg grating displacement sensors has become extremely difficult, prolonging installation time and increasing operational complexity. Furthermore, the lack of effective positioning components at the top of the stress support makes it difficult to quickly and accurately locate the sensor when locking the clamp at the top, resulting in cumbersome and inefficient operations that severely impact installation efficiency. Therefore, this paper studies and improves the existing structure and its shortcomings to provide a fiber Bragg grating sensor stress support, aiming to achieve greater practical value. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a fiber Bragg grating sensor stress support, which is achieved by the following specific technical means:

[0005] A fiber Bragg grating sensor stress support includes two sets of fixing frames, each composed of an upper arc-shaped plate and a lower arc-shaped plate. Each upper arc-shaped plate has a fixing seat at its top, and each fixing seat has a clamping plate at its top. The clamping plates in both sets have clamping grooves at their centers, and corresponding fiber Bragg grating sensor bodies are placed between these clamping grooves. One side of one set of fixing frames is connected to a U-shaped tube. Both sets of fixing seats have horizontally opened through holes corresponding to the two long rods of the U-shaped tube, and the two long rods of the U-shaped tube are inserted into the corresponding through holes.

[0006] As a preferred embodiment of this utility model, rubber gaskets are installed on the inner walls of both the upper and lower arc-shaped plates.

[0007] As a preferred embodiment of this utility model, mounting plates are provided on both the left and right sides of the upper and lower arc-shaped plates, and mounting holes of the same size and concentricity are provided on each mounting plate; the two sets of mounting holes on the same side are fastened together by bolts and nuts.

[0008] As a preferred technical solution of this utility model, a positioning frustum is provided diagonally at the top of the fixed base, and a slot is provided at the bottom of each clamp plate that matches the outer contour of the positioning frustum, and the positioning frustum is inserted into the slot.

[0009] As a preferred technical solution of this utility model, the top of the clamping plate is symmetrically provided with round holes, and both sets of round holes are connected to internal hexagon screws, and one end of both sets of internal hexagon screws is fastened to the fixing seat.

[0010] As a preferred embodiment of this utility model, protective pads are provided inside both sets of clamping grooves.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] This invention features through holes in the top mounting bases of multiple sets of upper arc-shaped plates, with two long rods of a U-shaped tube inserted into the corresponding through holes. This ensures that all mounting bases are in the same position, preventing installation difficulties caused by deviations in installation angle, and significantly improving installation efficiency and stability. Furthermore, by setting positioning frustums diagonally at the top of the mounting bases and creating corresponding slots at the bottom of the clamping plates, the clamping plates can be quickly positioned during installation. This facilitates subsequent locking of the clamping plates to the mounting bases using hexagonal screws, making the process more convenient and efficient, reducing installation time and operational difficulty, and greatly enhancing the practical value and engineering applicability of the stress support. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of this utility model. Figure 1 .

[0014] Figure 2 This is a schematic diagram of the three-dimensional structure of this utility model. Figure 2 .

[0015] Figure 3 This is a partial structural diagram of the present invention. Figure 1 .

[0016] Figure 4 This is a partial structural diagram of the present invention. Figure 2 .

[0017] Figure 5 This is a partial structural diagram of the present invention. Figure 3 .

[0018] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0019] 1. Upper arc plate; 2. Lower arc plate; 3. Fixing base; 4. Clamping plate; 5. U-tube; 6. Rubber gasket; 7. Mounting plate; 8. Bolt; 9. Nut; 10. Positioning frustum; 11. Hex socket screw; 12. Fiber optic grating sensor body. Detailed Implementation

[0020] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0021] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship 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. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Example:

[0024] As attached Figure 1 To be continued Figure 5 As shown:

[0025] This utility model provides a stress support for a fiber Bragg grating sensor, comprising two sets of fixed frames respectively composed of an upper arc plate 1 and a lower arc plate 2. Each upper arc plate 1 has a fixed seat 3 at its top end, and each fixed seat 3 has a clamping plate 4 installed at its top end. Each set of clamping plates 4 has a clamping groove at its center, and a corresponding fiber Bragg grating sensor body 12 is placed between the two sets of clamping grooves. One side of one set of fixed frames is connected to a U-shaped tube 5. The interior of each set of fixed seats 3 has horizontally opened through holes that correspond to the two long rods of the U-shaped tube 5, and the two long rods of the U-shaped tube 5 are inserted into the corresponding through holes.

[0026] Rubber gaskets 6 are installed on the inner walls of both the upper arc plate 1 and the lower arc plate 2. The rubber gaskets 6 can increase the friction between the fixing frame and the pipe surface, improve the installation stability, and at the same time, the elastic properties of rubber can buffer the hard contact between the support and the pipe, reducing the wear on the pipe surface.

[0027] Mounting plates 7 are provided on both the left and right sides of the upper arc plate 1 and the lower arc plate 2. Each mounting plate 7 has a corresponding concentric mounting hole of the same size. The two sets of mounting holes on the same side are fastened together by bolts 8 and nuts 9, so that the upper arc plate 1 and the lower arc plate 2 can be firmly clamped on the corresponding pipes. At the same time, the rigid connection of bolts 8 and nuts 9 ensures that the fixing frame will not loosen during long-term use, ensuring stable stress transmission and providing a basis for accurate monitoring of the fiber optic grating sensor body 12.

[0028] The top of the fixed base 3 is provided with a positioning frustum 10 at the top diagonal, and the bottom of the clamping plate 4 is provided with a slot that matches the outer contour of the positioning frustum 10. The positioning frustum 10 is inserted into the slot, which can realize the quick alignment between the clamping plate 4 and the fixed base 3 when installing the clamping plate 4, avoid the clamping plate 4 from being misaligned, and ensure that the fiber optic grating sensor body 12 is subjected to uniform force.

[0029] The clamping plate 4 has symmetrically arranged round holes at its top end. Both sets of round holes are connected to hexagon socket screws 11, and one end of each set of hexagon socket screws 11 is fastened to the fixing seat 3, which further strengthens the connection between the clamping plate 4 and the fixing seat 3 and prevents them from separating. At the same time, the design of the hexagon socket screws 11 makes it easy to install and remove using special tools, which is convenient to operate and the connection is firm.

[0030] Both sets of clamping slots are equipped with protective pads inside. The protective pads can directly buffer the clamping force of the clamping plate 4 on the fiber Bragg grating sensor body 12, and prevent the outer shell of the fiber Bragg grating sensor body 12 from being squeezed and damaged due to hard contact. At the same time, the protective pads can fill the gap between the fiber Bragg grating sensor body 12 and the clamping slot, prevent it from shaking in the clamping slot, ensure the stability of the fiber Bragg grating sensor body 12 during the monitoring process, and ensure the accuracy of stress transmission.

[0031] The working principle of this embodiment:

[0032] During installation, first, attach the upper arc-shaped plate 1 and lower arc-shaped plate 2 of the two sets of fixing frames to the outer surface of the pipe. Then, using bolts 8 and nuts 9, initially assemble and fix the fixing frames through the mounting holes on the mounting plates 7 on both sides of the upper arc-shaped plate 1 and lower arc-shaped plate 2, thus initially connecting the fixing frames to the pipe. Next, rotate and adjust the position of the two sets of fixing frames to ensure that the through holes on the top fixing seats 3 of the two sets of upper arc-shaped plates 1 are coaxially aligned. Then, insert the two long rods of the U-shaped tube 5 into the corresponding through holes of the fixing seats 3, and tighten the bolts 8 and nuts 9 again based on this, firmly clamping the fixing frames onto the pipe surface. The rubber gasket 6 on the inner wall of the fixing frame effectively increases the friction with the pipe, preventing the stress support from sliding when the pipe vibrates or is under stress, further improving installation stability.

[0033] Next, the fiber Bragg grating sensor body 12 is fixed: the fiber Bragg grating sensor body 12 is placed in the clamping groove of the clamping plate 4, and then the clamping plate 4 is placed on top of the fixing base 3. During placement, the positioning frustum 10 at the top of the fixing base 3 is precisely inserted into the slot at the bottom of the clamping plate 4, quickly completing the positioning and alignment of the two. Then, the clamping plate 4 and the fixing base 3 are fastened together by the internal hex screws 11 at the top of the clamping plate 4, so that the fiber Bragg grating sensor body 12 is stably clamped in the clamping grooves of the two sets of clamping plates 4. The protective pads in the clamping grooves can prevent the fiber Bragg grating sensor body 12 from making direct hard contact with the clamping plate 4, effectively preventing wear or damage to the sensor shell.

[0034] After installation, the monitoring phase can begin by removing the U-shaped tube 5. When the pipeline undergoes deformation, settlement, or other displacement changes, the stress in the pipeline will be rigidly transmitted through the fixed frame and clamp 4, precisely acting on the fiber optic grating sensor body 12, enabling the sensor to sense and provide feedback on the stress state of the pipeline in real time.

[0035] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A stress support for a fiber optic grating sensor, comprising two sets of fixing frames respectively composed of an upper arc-shaped plate (1) and a lower arc-shaped plate (2), characterized in that: The top of each of the upper arc plate (1) is provided with a fixing seat (3), and the top of each fixing seat (3) is provided with a clamping plate (4). The center of each of the two sets of clamping plates (4) is provided with a clamping groove, and the corresponding fiber optic grating sensor body (12) is placed between the two sets of clamping grooves. One side of one of the fixing frames is connected to a U-shaped tube (5). The interior of each of the two sets of fixing seats (3) is provided with a horizontal through hole that matches the two long rods of the U-shaped tube (5), and the two long rods of the U-shaped tube (5) are inserted into the corresponding through hole.

2. The fiber optic grating sensor stress support as described in claim 1, characterized in that: Rubber gaskets (6) are installed on the inner walls of both the upper arc plate (1) and the lower arc plate (2).

3. The fiber optic grating sensor stress support as described in claim 1, characterized in that: Mounting plates (7) are provided on both the left and right sides of the upper arc plate (1) and the lower arc plate (2). Mounting plates (7) are provided with mounting holes of the same size and concentricity. The two sets of mounting holes on the same side are fastened together by bolts (8) and nuts (9).

4. The fiber optic grating sensor stress support as described in claim 1, characterized in that: The top of the fixed base (3) is provided with a positioning frustum (10) at opposite corners. The bottom of the clamping plate (4) is provided with a slot that matches the outer contour of the positioning frustum (10), and the positioning frustum (10) is inserted into the slot.

5. The fiber optic grating sensor stress support as described in claim 1, characterized in that: The top of the clamp (4) is symmetrically provided with round holes, and both sets of round holes are connected to internal hexagon screws (11), and one end of both sets of internal hexagon screws (11) is fastened to the fixing seat (3).

6. The fiber optic grating sensor stress support as described in claim 1, characterized in that: Both sets of clamping slots are equipped with protective pads inside.

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