Optical fiber acoustic wave sensing pipeline leakage positioning device

Abstract

The utility model discloses a fiber acoustic wave sensing pipeline leakage positioning device relates to acoustic wave monitoring technical field. Fiber acoustic wave sensing pipeline leakage positioning device, including pipeline and DAS host computer, the outer surface of pipeline is fixedly sleeved and has the installation sleeve, is seted up on the installation sleeve and has the installation hole, is installed in the inside of installation hole and has the monitoring optical fiber, the optical fiber positioning structure, the optical fiber positioning structure is located on the installation sleeve, and butt -joint piece no.

Description

Technical Field

[0001] This utility model relates to the field of acoustic wave monitoring technology, and in particular to a fiber optic acoustic wave sensing device for locating pipeline leaks. Background Technology

[0002] In many industrial sectors such as oil, natural gas, chemical industry, and water supply, pipelines are key facilities for fluid transportation, and their safety and reliability are of paramount importance. Pipeline leaks not only lead to resource waste and environmental pollution, but may also cause safety accidents, posing a serious threat to the safety of people's lives and property. In the field of pipeline leak monitoring in oil and gas, water supply and drainage, fiber optic acoustic wave sensing technology is widely used due to its advantages of high precision and long-distance monitoring.

[0003] Traditional installation methods often use simple binding or pasting to fix optical fibers to the outside of pipes. This method is easily affected by environmental factors, which can cause the optical fibers to loosen or shift. Due to the unstable installation of optical fibers, the acoustic signal is prone to attenuation or distortion during transmission, resulting in reduced leak location accuracy and affecting the accurate acquisition and transmission of acoustic signals. Therefore, we propose an optical fiber acoustic wave sensing pipe leak location device. Utility Model Content

[0004] The purpose of this invention is to solve at least one of the technical problems existing in the prior art, and to provide a fiber optic acoustic wave sensing pipeline leak location device. This device can solve the problem that traditional installation methods often use simple binding or pasting to fix the optical fiber to the outside of the pipeline. This method is easily affected by environmental factors, which can cause the optical fiber to loosen or shift. Due to the unstable installation of the optical fiber, the acoustic wave signal is prone to attenuation or distortion during transmission, resulting in reduced leak location accuracy and thus affecting the accurate acquisition and transmission of the acoustic wave signal.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fiber optic acoustic wave sensing pipe leak location device, comprising:

[0006] The pipe and DAS host are equipped with a mounting sleeve fixedly fitted on the outer surface of the pipe. The mounting sleeve has a mounting hole, and a monitoring fiber optic cable is installed inside the mounting hole.

[0007] The fiber optic positioning structure is located on the mounting sleeve.

[0008] The fiber optic positioning structure includes an arc-shaped positioning plate 1, an arc-shaped positioning plate 2, two docking blocks 2, docking block 1, and bolts. The arc-shaped positioning plate 2 is hinged to the arc-shaped positioning plate 1 and sleeved on the outer surface of the mounting sleeve. The two docking blocks 2 are fixedly connected to one end of the arc-shaped positioning plate 1, and the docking block 1 is fixedly connected to one end of the arc-shaped positioning plate 2. The docking block 1 is located in the opposite face of the two docking blocks 2. The docking block 1 is fixedly installed in the opposite face of the two docking blocks 2 by bolts. Three positioning holes are opened on the outer surface of the arc-shaped positioning plate 2, and slots are opened on the outer surface of the mounting sleeve.

[0009] Preferably, the fiber optic positioning structure further includes three positioning posts and a clamping positioning block. The three positioning posts are all fixedly connected to the outer surface of the mounting sleeve and are all inserted into the corresponding positioning holes. The clamping positioning block is fixedly connected to the inside of the arc-shaped positioning plate and is slidably connected to the inside of the slot. The clamping positioning block is wrapped around the surface of the monitoring fiber.

[0010] Preferably, there are multiple fiber optic positioning structures arranged in a linear array on the mounting sleeve.

[0011] Preferably, an external optical fiber is fixedly connected to the DAS host, and the end of the external optical fiber away from the DAS host is fixedly connected to the end of the monitoring optical fiber.

[0012] Preferably, the interior of the clamping and positioning block has a "U" shaped structure.

[0013] Preferably, all three positioning posts are made of rubber, and each of the three positioning posts is interference-fitted with the corresponding positioning hole.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. In this fiber optic acoustic wave sensing pipeline leak location device, docking block one is fixedly installed between two docking blocks two by bolts, realizing a firm connection between arc-shaped positioning plate one and arc-shaped positioning plate two, ensuring the stability of the fiber optic positioning structure outside the pipeline. The clamping positioning block is slidably connected to the slot on the mounting sleeve and wrapped around the surface of the monitoring fiber, realizing further clamping and positioning of the monitoring fiber, thereby enhancing the stability of the monitoring fiber, reducing signal interference caused by fiber shaking or displacement, and improving the transmission quality of acoustic wave signals. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2This is a schematic diagram of the cross-sectional structure of the mounting sleeve of this utility model;

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

[0020] Figure 4 This is a schematic diagram of the arc-shaped positioning plate of this utility model.

[0021] Reference numerals in the attached diagram: 1. DAS main unit; 2. External optical fiber; 3. Pipe; 4. Mounting sleeve; 5. Arc-shaped positioning plate one; 6. Arc-shaped positioning plate two; 7. Positioning hole; 8. Positioning post; 9. Monitoring optical fiber; 10. Clamping positioning block; 11. Slot; 12. Mounting hole; 13. Bolt; 14. Connecting block one; 15. Connecting block two. Detailed Implementation

[0022] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0023] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0024] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0025] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0026] Please see Figure 1-4 This utility model provides a technical solution: a fiber optic acoustic wave sensing pipeline leak location device, comprising:

[0027] Pipe 3 and DAS host 1, a mounting sleeve 4 is fixedly sleeved on the outer surface of pipe 3, a mounting hole 12 is opened on the mounting sleeve 4, and a monitoring optical fiber 9 is installed inside the mounting hole 12.

[0028] The fiber optic positioning structure is located on the mounting sleeve 4.

[0029] The fiber optic positioning structure includes an arc-shaped positioning plate 1 5, an arc-shaped positioning plate 2 6, two docking blocks 2 15, a docking block 1 14, and bolts 13. The arc-shaped positioning plate 2 6 is hinged to the arc-shaped positioning plate 1 5 and sleeved on the outer surface of the mounting sleeve 4. The two docking blocks 2 15 are fixedly connected to one end of the arc-shaped positioning plate 1 5, and the docking block 1 14 is fixedly connected to one end of the arc-shaped positioning plate 2 6. The docking block 1 14 is located in the opposite face of the two docking blocks 2 15. The docking block 1 14 is fixedly installed in the opposite face of the two docking blocks 2 15 by bolts 13. Three positioning holes 7 are opened on the outer surface of the arc-shaped positioning plate 2 6, and slots 11 are opened on the outer surface of the mounting sleeve 4.

[0030] The fiber optic positioning structure also includes three positioning posts 8 and a clamping positioning block 10. The three positioning posts 8 are all fixedly connected to the outer surface of the mounting sleeve 4 and are all inserted into the corresponding positioning holes 7. The clamping positioning block 10 is fixedly connected to the inside of the arc-shaped positioning plate 5 and is slidably connected to the inside of the slot 11. The clamping positioning block 10 is wrapped around the surface of the monitoring fiber 9 and has a "U" shaped structure inside. The three positioning posts 8 are all made of rubber and are all interference-fitted with the corresponding positioning holes 7.

[0031] There are multiple fiber optic positioning structures arranged in a linear array on the mounting sleeve 4. An external fiber optic cable 2 is fixedly connected to the DAS host 1. The end of the external fiber optic cable 2 away from the DAS host 1 is fixedly connected to one end of the monitoring fiber optic cable 9.

[0032] Furthermore, when using the device, docking block 14 is fixedly installed between two docking blocks 15 by bolts 13, so as to achieve a tight connection between arc-shaped positioning plate 15 and arc-shaped positioning plate 26. The arc-shaped positioning plate 26 is provided with positioning holes 7, and the mounting sleeve 4 is fixedly connected with positioning pins 8 corresponding to the positioning holes 7, so as to ensure the stable positioning of the arc-shaped positioning plate 26 on the mounting sleeve 4.

[0033] The arc-shaped positioning plate 5 has a clamping positioning block 10 fixedly connected inside. The clamping positioning block 10 has a "U" shaped structure and is slidably connected to the slot 11 on the mounting sleeve 4. It is wrapped around the surface of the monitoring optical fiber 9 to achieve further clamping and positioning of the monitoring optical fiber 9.

[0034] When a leak occurs in pipe 3, the acoustic signal generated at the leak point will propagate along pipe 3 and be captured by the monitoring optical fiber 9. The monitoring optical fiber 9 will transmit the captured acoustic signal to the DAS host 1 through the external optical fiber 2. The DAS host 1 will process and analyze the received acoustic signal, identify the characteristics of the leak signal through an algorithm, and calculate the location of the leak point based on the propagation time and intensity change of the acoustic signal in the monitoring optical fiber 9, thus achieving precise leak location.

[0035] The first docking block 14 is fixedly installed between the two second docking blocks 15 by bolts 13, realizing a firm connection between the first arc positioning plate 5 and the second arc positioning plate 6, ensuring the stability of the fiber optic positioning structure outside the pipe 3. The clamping positioning block 10 is slidably connected to the slot 11 on the mounting sleeve 4 and wrapped around the surface of the monitoring fiber 9, realizing further clamping and positioning of the monitoring fiber 9, thereby enhancing the stability of the monitoring fiber 9, reducing signal interference caused by fiber optic shaking or displacement, and improving the transmission quality of acoustic signals.

[0036] Structural Description: DAS Host 1: As the core processing unit of the entire device, it is responsible for receiving, processing and analyzing the acoustic signals transmitted by the monitoring fiber optic 9, identifying leakage signal characteristics through algorithms, and calculating the location of the leakage point;

[0037] External fiber optic cable 2: connects DAS host 1 and monitoring fiber optic cable 9, and is used to transmit the acoustic wave signal captured by monitoring fiber optic cable 9 to DAS host 1;

[0038] Pipeline 3: The object being monitored. When a leak occurs in pipeline 3, an acoustic signal will be generated at the leak point.

[0039] Mounting sleeve 4: It is fixedly sleeved on the outer surface of pipe 3 to provide an installation base for monitoring fiber 9 and fiber positioning structure;

[0040] Arc-shaped positioning plate 1 5: As part of the fiber optic positioning structure, it works in conjunction with arc-shaped positioning plate 2 6 and is fastened together by bolts 13 to achieve the positioning of the monitoring fiber optic 9.

[0041] Arc-shaped positioning plate 2 6: Hinged on arc-shaped positioning plate 1 5 and sleeved on the outer surface of mounting sleeve 4, it ensures stable positioning on mounting sleeve 4 through the cooperation of positioning hole 7 and positioning post 8.

[0042] Positioning hole 7: It is opened on the outer surface of the arc-shaped positioning plate 6 and is inserted into the positioning post 8 on the mounting sleeve 4 to achieve precise positioning of the arc-shaped positioning plate 6.

[0043] Positioning post 8: It is fixedly connected to the outer surface of the mounting sleeve 4, inserted into the positioning hole 7, and is made of rubber material. It is interference-fitted with the positioning hole 7 to ensure the stable installation of the arc-shaped positioning plate 6.

[0044] Monitoring fiber optic 9: Installed in the mounting hole 12 of the mounting sleeve 4, it is used to capture the acoustic signal generated when the pipe 3 leaks, and transmit the signal to the DAS host 1 through the external fiber optic 2;

[0045] Clamping and positioning block 10: It is fixedly connected inside the arc-shaped positioning plate 5, has a "U" shaped structure, slides with the slot 11 on the mounting sleeve 4, and wraps around the surface of the monitoring optical fiber 9 to achieve further clamping and positioning of the monitoring optical fiber 9.

[0046] Slot 11: It is formed on the outer surface of the mounting sleeve 4 and is slidably connected to the clamping and positioning block 10, providing installation and positioning space for the clamping and positioning block 10;

[0047] Mounting hole 12: is formed on the mounting sleeve 4 for mounting the monitoring fiber optic cable 9;

[0048] Bolt 13: Used to fix the first docking block 14 between the two second docking blocks 15, so as to achieve a tight connection between the first arc positioning plate 5 and the second arc positioning plate 6;

[0049] Connecting block 14: It is fixedly connected to one end of the arc-shaped positioning plate 26, located in the opposite face of the two connecting blocks 25, and is fixedly connected to the connecting block 25 by bolts 13;

[0050] Connecting Block 2 15: Both connecting blocks 2 15 are fixedly connected to one end of the arc-shaped positioning plate 1 5, and cooperate with connecting block 1 14. The arc-shaped positioning plate 1 5 and the arc-shaped positioning plate 2 6 are fastened together by bolts 13.

[0051] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A fiber optic acoustic wave sensing device for locating pipeline leaks, characterized in that, include: Pipe (3) and DAS host (1), a mounting sleeve (4) is fixedly sleeved on the outer surface of the pipe (3), and a mounting hole (12) is opened on the mounting sleeve (4). A monitoring fiber (9) is installed inside the mounting hole (12). The fiber optic positioning structure is located on the mounting sleeve (4); The fiber optic positioning structure includes an arc-shaped positioning plate one (5), an arc-shaped positioning plate two (6), two docking blocks two (15), docking block one (14) and bolts (13). The arc-shaped positioning plate two (6) is hinged on the arc-shaped positioning plate one (5) and sleeved on the outer surface of the mounting sleeve (4). The two docking blocks two (15) are fixedly connected to one end of the arc-shaped positioning plate one (5). Among them, the first docking block (14) is fixedly connected to one end of the second arc-shaped positioning plate (6). The first docking block (14) is located in the opposite face of the two second docking blocks (15). The first docking block (14) is fixedly installed in the opposite face of the two second docking blocks (15) by bolts (13). Three positioning holes (7) are opened on the outer surface of the second arc-shaped positioning plate (6), and slots (11) are opened on the outer surface of the mounting sleeve (4).

2. The fiber optic acoustic wave sensing pipeline leak location device according to claim 1, characterized in that: The fiber optic positioning structure also includes three positioning posts (8) and a clamping positioning block (10). The three positioning posts (8) are all fixedly connected to the outer surface of the mounting sleeve (4), and the three positioning posts (8) are all inserted into the corresponding positioning holes (7). The clamping positioning block (10) is fixedly connected inside the arc-shaped positioning plate (5), the clamping positioning block (10) is slidably connected to the inside of the slot (11), and the clamping positioning block (10) is wrapped around the surface of the monitoring optical fiber (9).

3. The fiber optic acoustic wave sensing pipe leak location device according to claim 1, characterized in that: The number of optical fiber positioning structures is multiple, and the multiple optical fiber positioning structures are arranged in a linear array on the mounting sleeve (4).

4. The fiber optic acoustic wave sensing pipe leak location device according to claim 1, characterized in that: An external optical fiber (2) is fixedly connected to the DAS host (1), and the end of the external optical fiber (2) away from the DAS host (1) is fixedly connected to the end of the monitoring optical fiber (9).

5. The fiber optic acoustic wave sensing pipe leak location device according to claim 2, characterized in that: The interior of the clamping and positioning block (10) has a "U" shaped structure.

6. The fiber optic acoustic wave sensing pipe leak location device according to claim 2, characterized in that: All three positioning posts (8) are made of rubber, and all three positioning posts (8) are interference-fitted with the corresponding positioning holes (7).

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