A Deformation Monitoring Device for Fiber Optic Sensing

Abstract

This utility model discloses a deformation monitoring device for fiber optic sensing, relating to the field of fiber optic monitoring technology. It includes a fiber optic transmission cable assembly, which is used to improve the heat dissipation effect of the monitoring device. The fiber optic transmission cable assembly includes a protective jacket, heat dissipation holes, a graphite heat dissipation layer, and transmission wires. The heat dissipation holes are located on the outer side of the protective jacket, and the graphite heat dissipation layer is installed on the inner wall of the protective jacket. The transmission wires are installed inside the protective jacket through the graphite heat dissipation layer, with the graphite heat dissipation layer in close contact with the outer side of the transmission wires. In this utility model, by installing a graphite heat dissipation layer between the protective jacket and the transmission wires, and then opening multiple heat dissipation holes, the graphite heat dissipation layer, which has extremely low thermal resistance (20% lower than copper and 40% lower than aluminum), allows the heat generated by the transmission wires to be quickly transferred to the protective jacket for heat dissipation. Simultaneously, the heat dissipation holes provide space for heat dissipation, thereby improving the heat dissipation effect of the monitoring device.

Description

Technical Field

[0001] This utility model relates to the field of optical fiber monitoring technology, specifically a deformation monitoring device for optical fiber sensing. Background Technology

[0002] Fiber optic sensors are components or devices that convert the state of a measured object into an optical signal for detection. The basic working principle of a fiber optic sensor is to send light from a light source through an optical fiber into a modulator, so that the parameter to be measured interacts with the light entering the modulation region, causing a change in the optical properties of the light, which becomes modulated signal light. This signal light is then sent through an optical fiber to a photodetector, and after demodulation, the measured parameter is obtained.

[0003] Patent document CN209727124U discloses an optical fiber sensor, "including an optical fiber or fiber optic grating, and a seamless tube sleeved on the outside of the optical fiber or fiber optic grating. Both ends of the seamless tube are connected to optical fiber connectors, or one end of the seamless tube is connected to an optical fiber connector and the other end is a sealed end. The cross-section of the seamless tube is the same at all locations. An armor layer is provided outside the seamless tube to protect the optical fiber or fiber optic grating. This configuration, with the armor layer, enhances the tensile strength, compressive strength, and other mechanical protection of the optical fiber sensor, extends its service life, and improves the anti-interference performance of the optical fiber through shielding protection. It also increases the mechanical strength of the optical fiber sensor and improves its corrosion resistance, thereby solving the problems of fragile test components within optical fiber sensors, poor resistance to high and low temperatures in ordinary packaging, limited application range of optical fiber sensors, lack of standardization in optical fiber sensor packaging within the industry, and weak tensile strength and bending resistance of optical fiber sensors." While the optical fiber sensor in the patent document improves tensile and bending resistance, heat is generated in the transmission cable during use. Due to the lack of heat dissipation components, the heat dissipation effect of the transmission cable in the optical fiber sensor is not improved.

[0004] In view of this, it is necessary to develop a deformation monitoring device for fiber optic sensing, which can improve the heat dissipation effect of fiber optic sensors. Utility Model Content

[0005] The purpose of this invention is to provide a deformation monitoring device for fiber optic sensing, in order to solve the technical problem mentioned in the background art that the transmission cable of the fiber optic sensor generates heat during use, and the lack of heat dissipation components leads to the inability to improve the heat dissipation effect of the transmission cable in the fiber optic sensor.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a deformation monitoring device for fiber optic sensing, comprising: a fiber optic transmission cable assembly, wherein the fiber optic transmission cable assembly is used to improve the heat dissipation effect of the monitoring device, the fiber optic transmission cable assembly includes a protective jacket, heat dissipation holes, a graphite heat dissipation layer and transmission wires, the heat dissipation holes are opened on the outside of the protective jacket, the graphite heat dissipation layer is installed on the inner wall of the protective jacket, and the transmission wires are installed inside the protective jacket through the graphite heat dissipation layer, and the graphite heat dissipation layer is in contact with the outside of the transmission wires.

[0007] Preferably, a plurality of pressure-resistant steel rings are arranged and installed on the outer side of the protective jacket.

[0008] Preferably, a connector plug is installed at one end of the optical fiber transmission cable assembly, and an optical fiber sensor is installed at the other end of the optical fiber transmission cable assembly.

[0009] Preferably, the detection end of the fiber optic sensor is equipped with a sensing head.

[0010] Preferably, an external threaded sleeve is installed on the outer side of the fiber optic sensor, and a limiting plate is installed on the outer back side of the external threaded sleeve.

[0011] Preferably, the outer thread of the external threaded sleeve is threadedly connected to an internal threaded ring, and a protective sleeve is installed on the front of the internal threaded ring, with the protective sleeve located on the outside of the fiber optic sensor.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] In this invention, a protective jacket is installed on the outside of the transmission wire to protect it. The transmission wire generates heat during use. To improve heat dissipation, a graphite heat dissipation layer is installed between the protective jacket and the transmission wire, with multiple heat dissipation holes. The graphite heat dissipation layer has extremely low thermal resistance (20% lower than copper and 40% lower than aluminum), enabling it to quickly conduct localized heat to the entire contact surface. This allows the heat generated by the transmission wire to be rapidly transferred to the protective jacket for heat dissipation. Simultaneously, the heat dissipation holes provide space for heat dissipation, thereby improving the heat dissipation effect of the monitoring device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the sewing machine structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the insertion rod structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the adjustment component structure of this utility model.

[0018] In the diagram: 1. Fiber optic transmission cable assembly; 2. Connecting plug; 3. Protective jacket; 4. Heat dissipation hole; 5. Pressure-resistant steel ring; 6. Graphite heat dissipation layer; 7. Transmission wire; 8. Fiber optic sensor; 9. External threaded sleeve; 10. Limiting plate; 11. Internal threaded ring; 12. Protective sleeve; 13. Sensor head. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] Please see Figures 1-4 A deformation monitoring device for fiber optic sensing;

[0023] Includes: fiber optic transmission cable assembly 1, which is used to improve the heat dissipation effect of the monitoring device. The fiber optic transmission cable assembly 1 includes a protective jacket 3, heat dissipation holes 4, a graphite heat dissipation layer 6, and a transmission wire 7. The heat dissipation holes 4 are opened on the outside of the protective jacket 3. The graphite heat dissipation layer 6 is installed on the inner wall of the protective jacket 3. The transmission wire 7 is installed inside the protective jacket 3 through the graphite heat dissipation layer 6, and the graphite heat dissipation layer 6 is attached to the outside of the transmission wire 7.

[0024] The transmission conductor 7 in the fiber optic transmission cable assembly 1 is used to transmit electrical signals and provides a channel for transmitting signals detected by the fiber optic sensor 8. The protective jacket 3 is installed on the outside of the transmission conductor 7 to protect it. The transmission conductor 7 generates heat during use. To improve the heat dissipation of the transmission conductor 7, a graphite heat dissipation layer 6 is installed between the protective jacket 3 and the transmission conductor 7, and multiple heat dissipation holes 4 are opened. The graphite heat dissipation layer 6 has extremely low thermal resistance (20% lower than copper and 40% lower than aluminum), which can quickly conduct local heat to the entire contact surface, so that the heat generated by the transmission conductor 7 can be quickly transferred to the protective jacket 3 for heat dissipation. At the same time, the heat dissipation holes 4 provide space for heat dissipation, thereby improving the heat dissipation effect of the monitoring device.

[0025] Several pressure-resistant steel rings 5 ​​are arranged and installed on the outer side of the protective jacket 3;

[0026] Several pressure-resistant steel rings 5 ​​are neatly arranged on the outside of the protective jacket 3, and the distance between each pressure-resistant steel ring 5 is 2cm. When the optical fiber transmission cable assembly 1 is bent, it will not be affected by the pressure-resistant steel rings 5. At the same time, the pressure-resistant steel rings 5 ​​protect the protective jacket 3 from the outside, preventing it from being squeezed and affecting the internal transmission wires 7.

[0027] A connector 2 is installed at one end of the fiber optic transmission cable assembly 1, and a fiber optic sensor 8 is installed at the other end of the fiber optic transmission cable assembly 1.

[0028] The connector 2 is used to connect the fiber optic transmission cable assembly 1 to an external device by insertion.

[0029] The sensing end of the fiber optic sensor 8 is equipped with a sensing head 13;

[0030] The fiber optic sensor 8 detects the displacement and deformation of an object through the sensing head 13. If the object deforms, it will be converted into an optical signal for transmission and finally converted into parameters for display.

[0031] An external threaded sleeve 9 is installed on the outside of the fiber optic sensor 8, and a limit plate 10 is installed on the back side of the external threaded sleeve 9.

[0032] The outer thread of the external threaded sleeve 9 is threadedly connected to the inner threaded ring 11, thereby providing a position for the installation of the inner threaded ring 11. The outer thread of the external threaded sleeve 9 is a certain distance from the outer side of the front to prevent the inner threaded ring 11 from rotating and falling off from the front. The limiting plate 10 acts as a block to prevent the inner threaded ring 11 from rotating out of the outer side of the external threaded sleeve 9 from the back.

[0033] The outer thread of the external threaded sleeve 9 is connected to the internal threaded ring 11. The protective sleeve 12 is installed on the front of the internal threaded ring 11 and the protective sleeve 12 is located on the outside of the fiber optic sensor 8.

[0034] The internal threaded ring 11 moves back and forth on the outside of the external threaded sleeve 9 by rotation. When it is necessary to protect one end of the fiber optic sensor 8, the operator rotates the internal threaded ring 11 forward so that the protective sleeve 12 at one end extends out of the detection end of the fiber optic sensor 8, thereby protecting the sensing head 13 at the detection end and preventing it from being damaged by bumps.

[0035] The working principle is as follows: First, the monitoring device is connected to an external device via the connector plug 2. The fiber optic sensor 8 is used to detect the object being measured. When the fiber optic sensor 8 is not in use, the inner threaded ring 11 can be rotated to move outside the outer threaded sleeve 9, so that the protective sleeve 12 at one end protects the sensing head 13 at one end of the fiber optic sensor 8. At the same time, when the monitoring device is in use, a heat dissipation component is installed on the outside of the transmission wire 7 to improve the heat dissipation efficiency of the transmission wire 7 and prevent the heat from being not effectively dissipated, which would cause the internal heat to increase and shorten the service life of the transmission wire 7.

[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A deformation monitoring device for fiber optic sensing, characterized in that, Includes: fiber optic transmission cable assembly (1), which is used to improve the heat dissipation effect of the monitoring device. The fiber optic transmission cable assembly (1) includes a protective jacket (3), heat dissipation holes (4), a graphite heat dissipation layer (6) and a transmission wire (7). The heat dissipation holes (4) are opened on the outside of the protective jacket (3). The graphite heat dissipation layer (6) is installed on the inner wall of the protective jacket (3). The transmission wire (7) is installed inside the protective jacket (3) through the graphite heat dissipation layer (6), and the graphite heat dissipation layer (6) is attached to the outside of the transmission wire (7).

2. The deformation monitoring device for fiber optic sensing according to claim 1, characterized in that: Several pressure-resistant steel rings (5) are arranged on the outer side of the protective jacket (3).

3. The deformation monitoring device for fiber optic sensing according to claim 1, characterized in that: One end of the optical fiber transmission cable assembly (1) is equipped with a connector plug (2), and the other end of the optical fiber transmission cable assembly (1) is equipped with an optical fiber sensor (8).

4. A deformation monitoring device for fiber optic sensing according to claim 3, characterized in that: The fiber optic sensor (8) has a sensing head (13) installed at its detection end.

5. A deformation monitoring device for fiber optic sensing according to claim 4, characterized in that: The fiber optic sensor (8) is fitted with an external threaded sleeve (9) on its outer side, and a limit plate (10) is fitted on the outer back side of the external threaded sleeve (9).

6. A deformation monitoring device for fiber optic sensing according to claim 5, characterized in that: The outer threaded sleeve (9) is connected to an inner threaded ring (11) on its outer side. A protective sleeve (12) is installed on the front of the inner threaded ring (11), and the protective sleeve (12) is located on the outside of the fiber optic sensor (8).

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