Ferromagnetic pipeline deformation, magnetic leakage and inertial navigation integrated data acquisition device

Abstract

The utility model discloses a ferromagnetic pipeline deformation, flux leakage and inertial navigation integrated data acquisition device, and relates to the technical field of pipeline detection devices. According to the technical scheme, the pipeline deformation detection device is characterized in that the pipeline deformation detection device comprises a front passing shaft, a middle passing shaft and a rear passing shaft, connecting pieces are arranged between the front passing shaft and the middle passing shaft and between the middle passing shaft and the rear passing shaft respectively, a data acquisition module is arranged in the front passing shaft, and a pipeline deformation detection assembly is arranged on the surface of the middle passing shaft; an inertial navigation sensor is further arranged in the rear passing shaft, a magnetic flux leakage detection assembly is arranged on the surface of the rear passing shaft, and the pipeline deformation detection assembly, the magnetic flux leakage detection assembly and the inertial navigation sensor are all in electric signal connection with a data acquisition module. The utility model aims to provide a ferromagnetic pipeline deformation, flux leakage and inertial navigation integrated data acquisition device.

Description

Technical Field

[0001] The utility model relates to a pipeline detection device, and more specifically, to an integrated data acquisition device for ferromagnetic pipeline deformation, magnetic flux leakage, and inertial navigation. Background Technique

[0002] During the daily maintenance of oil and gas pipelines, it is necessary to detect their internal geometric deformation, magnetic flux leakage, inertial navigation, etc. In the prior art, each device usually works independently, and each device has an independent data acquisition system.

[0003] The above technical solutions require multiple separate detections of the interior of oil and gas pipelines, need to prepare a variety of different detection devices, and the detection process consumes more time and labor costs.

[0004] Therefore, there is an urgent need for a new technical solution to solve the above technical problems. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the purpose of the present utility model is to provide an integrated data acquisition device for ferromagnetic pipeline deformation, magnetic flux leakage, and inertial navigation.

[0006] The above technical purpose of the present utility model is achieved through the following technical solutions: An integrated data acquisition device for ferromagnetic pipeline deformation, magnetic flux leakage, and inertial navigation includes a front through-axis, a middle through-axis, and a rear through-axis. Connecting pieces are respectively arranged between the front through-axis and the middle through-axis, and between the middle through-axis and the rear through-axis. A data acquisition module is arranged inside the front through-axis. A pipeline deformation detection component is arranged on the surface of the middle through-axis, and an inertial navigation sensor is also arranged inside it. A magnetic flux leakage detection component is arranged on the surface of the rear through-axis. The pipeline deformation detection component, the magnetic flux leakage detection component, and the inertial navigation sensor are all electrically connected to the data acquisition module.

[0007] By adopting the above technical solutions, during the detection process, the front through-axis, the middle through-axis, and the rear through-axis are successively sent into the pipeline. Driven by a robot or manually pulling a rope, the device is driven to move along the pipeline. The geometric deformation, magnetic flux leakage, inertial navigation, etc. inside the pipeline are detected by the pipeline deformation component, the magnetic flux leakage detection component, and the inertial navigation sensor respectively, thereby effectively improving the detection efficiency and reducing the detection cost.

[0008] The present utility model is further provided as: The data acquisition module includes an analog-to-digital conversion unit, a channel selection unit, an FPGA processing unit, an MCU control unit, and a data storage unit.

[0009] The present utility model is further configured as follows: an installation cavity is formed inside the front through-shaft, one end of the installation cavity penetrates through the end facing the middle through-shaft, and an installation member for installing a data acquisition module is further provided inside the installation cavity.

[0010] The present utility model is further configured as follows: the installation member includes a connection flange fixedly connected to one end of the front through-shaft, a connection plate embedded in the installation cavity is provided on one side surface of the connection flange, an installation rack for installing a data acquisition module is further provided on the surface of the connection plate, and only three data line through-holes penetrating the surfaces of the flange and the connection plate are formed on the installation member. Deformation data interfaces, magnetic flux leakage data interfaces, and inertial navigation data interfaces are respectively installed at the three data line through-holes on the surface of the flange.

[0011] The present utility model is further configured as follows: the pipeline deformation detection component includes a plurality of deformation detection members uniformly arranged on the circumferential surface of the middle through-shaft. The deformation detection member includes a fixed block fixedly connected to the middle through-shaft, a detection arm is rotatably connected to the surface of the fixed block, an L-shaped rod is fixedly connected to the end of the fixed block facing the front through-shaft, a tension spring is fixedly connected between the detection arm and the L-shaped rod, and a deformation sensor is provided at the hinge joint between the detection arm and the fixed block for detecting the deflection angle of the detection arm.

[0012] The present utility model is further configured as follows: the magnetic flux leakage detection component includes two permanent magnets sleeved on the surface of the rear through-shaft, and a plurality of magnetic flux leakage sensors are arranged on the surface of the rear through-shaft along the circumferential direction between the two permanent magnets.

[0013] The present utility model is further configured as follows: the connecting member includes a connecting rod fixedly connected to the center of the surface of the connection flange and the center of one end of the end of the rear through-shaft, a hanging hook is provided at the end of the connecting rod, and hanging rings for the hanging hook to hang on are provided at the end of the middle through-shaft facing the front through-shaft and the end of the rear through-shaft facing the middle through-shaft.

[0014] The present utility model has the following beneficial effects: during the detection process, the front through-shaft, the middle through-shaft, and the rear through-shaft are sequentially sent into the pipeline. Under the action of driving the robot or manually pulling the rope, the device is driven to move along the pipeline. The geometric deformation, magnetic flux leakage, inertial navigation, etc. inside the pipeline are respectively detected by the pipeline deformation component, the magnetic flux leakage detection component, and the inertial navigation sensor, thereby effectively improving the detection efficiency and reducing the detection cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional structural schematic diagram of this embodiment;

[0016] Figure 2 is an exploded structural schematic diagram of the front through-shaft of this embodiment;

[0017] Figure 3 Structural schematic diagram of the deformation detection component of this embodiment;

[0018] Figure 4 is Figure 1 Partial enlarged schematic diagram of part A in

[0019] Description of the drawings: 1. Front through-axis; 2. Middle through-axis; 3. Rear through-axis; 4. Data acquisition module; 5. Inertial navigation sensor; 6. Sealing support ring; 7. Installation cavity; 8. Connection flange; 9. Connection plate; 10. Installation frame; 11. Deformation data interface; 12. Magnetic flux leakage data interface; 13. Inertial navigation data interface; 14. Fixed block; 15. Detection arm; 16. L-shaped rod; 17. Tension spring; 18. Deformation sensor; 19. Permanent magnet; 20. Magnetic flux leakage sensor; 21. Connecting rod; 22. Hanging hook; 23. Hanging ring. Specific implementation mode

[0020] The following further describes the present utility model in detail with reference to the drawings.

[0021] Among them, the same parts are denoted by the same reference numerals. It should be noted that the terms "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings, and the terms "bottom surface" and "top surface", "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component.

[0022] As shown in the figure, a ferromagnetic pipeline deformation, magnetic flux leakage, and inertial navigation integrated data acquisition device includes a front through-axis 1, a middle through-axis 2, and a rear through-axis 3. Connecting pieces are respectively arranged between the front through-axis 1 and the middle through-axis 2, and between the middle through-axis 2 and the rear through-axis 3. A data acquisition module 4 is arranged inside the front through-axis 1. A pipeline deformation detection component is arranged on the surface of the middle through-axis 2. A groove is formed on the surface of the middle through-axis 2, and an inertial navigation sensor 5 is further arranged inside the groove. A magnetic flux leakage detection component is arranged on the surface of the rear through-axis 3. The pipeline deformation detection component, the magnetic flux leakage detection component, and the inertial navigation sensor 5 are all electrically connected to the data acquisition module 4. Sealing support rings 6 are arranged at both ends of the circumferential surfaces of the front through-axis 1 and the middle through-axis 2, and between the middle through-axis 2 and the rear through-axis 3.

[0023] During the detection process, the front through-axis 1, the middle through-axis 2, and the rear through-axis 3 are successively sent into the pipeline. Under the action of driving a robot or manually pulling a rope, the device is driven to move along the pipeline. The geometric deformation, magnetic flux leakage, inertial navigation, etc. inside the pipeline are respectively detected by the pipeline deformation component, the magnetic flux leakage detection component, and the inertial navigation sensor 5, thereby effectively improving the detection efficiency and reducing the detection cost.

[0024] The data acquisition module 4 includes an analog-to-digital conversion unit, a channel selection unit, an FPGA processing unit, an MCU control unit, and a data storage unit. The analog-to-digital conversion unit converts the analog data signals sent by the deformation and magnetic flux leakage sensors into digital signals; the channel selection unit divides the sent deformation, magnetic flux leakage, and inertial navigation data by channel and inputs them to the FPGA processing unit; the FPGA processing unit processes the received digital signals such as deformation, magnetic flux leakage, and inertial navigation bit by bit and finally outputs them to the MCU control unit in the form of 2 bytes (16 bits).

[0025] An installation cavity 7 is provided inside the front through-shaft 1, and one end of the installation cavity 7 facing the middle through-shaft 2 penetrates through it. An installation part for installing the data acquisition module 4 is also provided inside the installation cavity 7. The installation part includes a connection flange 8 fixedly connected to one end of the front through-shaft 1. The flange is fixedly connected to the end of the front through-shaft 1 by bolts. A connecting plate 9 embedded in the installation cavity 7 is provided on one surface of the connection flange 8. An installation bracket 10 for installing the data acquisition module 4 is also provided on the surface of the connecting plate 9. Only three data line through-holes penetrating the surfaces of the flange and the connecting plate 9 are provided on the installation part. Deformation data interfaces 11, magnetic flux leakage data interfaces 12, and inertial navigation data interfaces 13 are respectively installed at the three data line through-holes on the surface of the flange.

[0026] Install the data acquisition module 4 in the installation bracket 10, and then assemble the installation part with the front through-shaft 1, which is convenient for assembling and disassembling the device and facilitating later maintenance. The pipeline deformation component, the magnetic flux leakage detection component, and the inertial navigation sensor 5 are electrically connected to the data acquisition module 4 through the deformation data interface 11, the magnetic flux leakage data interface 12, and the inertial navigation data interface 13 to transmit the detection signals to the data acquisition module 4.

[0027] The pipeline deformation detection component includes a number of deformation detection parts evenly arranged on the circumferential surface of the middle through-shaft 2. The deformation detection part includes a fixed block 14 fixedly connected to the middle through-shaft 2. A detection arm 15 is rotatably connected to the surface of the fixed block 14. An L-shaped rod 16 is fixedly connected to the end of the fixed block 14 facing the front through-shaft 1. A tension spring 17 is fixedly connected between the detection arm 15 and the L-shaped rod 16. A deformation sensor 18 for detecting the deflection angle of the detection arm 15 is provided at the hinge joint between the detection arm 15 and the fixed block 14. The deformation sensor 18 is specifically an angle sensor (its installation method and detection method are both prior arts and will not be elaborated in this embodiment).

[0028] Under the action of the tension of the tension spring 17, the end of the detection arm 15 abuts against the inner wall of the pipeline. When there are depressions or protrusions on the inner wall of the pipeline, the angle of the detection arm 15 will change. After the deformation sensor 18 detects this angle change, it transmits it to the data acquisition module 4.

[0029] The magnetic flux leakage detection assembly includes two permanent magnets 19 sleeved on the surface of the rear through-shaft 3. A plurality of magnetic flux leakage sensors 20 are evenly arranged on the surface of the rear through-shaft 3 between the two permanent magnets 19 along the circumferential direction thereof. The two permanent magnets 19 are attached to the inner wall of the pipeline, and the magnetic flux leakage sensors 20 are used to detect the magnetic flux leakage signals generated inside the pipeline.

[0030] The connecting member includes a connecting rod 21 fixedly connected to the center of the surface of the connecting flange 8 and the center of one end of the rear through-shaft 3. A hanging hook 22 is arranged at the end of the connecting rod 21. Hanging rings 23 for the hanging hook 22 to hang on are arranged at the end of the middle through-shaft 2 facing the front through-shaft 1 and the end of the rear through-shaft 3 facing the middle through-shaft 2, so as to ensure that the front through-shaft 1, the middle through-shaft 2 and the rear through-shaft 3 can move smoothly inside the pipeline.

[0031] The specific embodiments are only explanations of the present invention, and they are not limitations to the present invention. Those skilled in the art can make modifications without creative contributions to the embodiments according to needs after reading this specification, but as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. An integrated data acquisition device for ferromagnetic pipeline deformation, magnetic flux leakage, and inertial navigation, characterized in that: It includes a front through-axis (1), a middle through-axis (2) and a rear through-axis (3). Connecting pieces are respectively arranged between the front through-axis (1) and the middle through-axis (2), and between the middle through-axis (2) and the rear through-axis (3). A data acquisition module (4) is arranged inside the front through-axis (1). A pipeline deformation detection component is arranged on the surface of the middle through-axis (2), and an inertial navigation sensor (5) is also arranged inside it. A magnetic flux leakage detection component is arranged on the surface of the rear through-axis (3). The pipeline deformation detection component, the magnetic flux leakage detection component and the inertial navigation sensor (5) are all electrically connected to the data acquisition module (4).

2. The integrated data acquisition device for ferromagnetic pipeline deformation, magnetic flux leakage and inertial navigation according to claim 1, characterized in that: The data acquisition module (4) includes an analog-to-digital conversion unit, a channel selection unit, an FPGA processing unit, an MCU control unit and a data storage unit.

3. The integrated data acquisition device for ferromagnetic pipeline deformation, magnetic flux leakage, and inertial navigation according to claim 2, characterized in that: An installation cavity (7) is formed inside the front through-axis (1). One end of the installation cavity (7) penetrates through the front through-axis (1) towards the middle through-axis (2). An installation piece for installing the data acquisition module (4) is also arranged inside the installation cavity (7).

4. A ferromagnetic pipeline deformation, magnetic flux leakage, and inertial navigation integrated data acquisition device according to claim 3, characterized in that: The installation piece includes a connecting flange (8) fixedly connected to one end of the front through-axis (1). A connecting plate (9) embedded in the installation cavity (7) is arranged on one side surface of the connecting flange (8). An installation frame (10) for installing the data acquisition module (4) is also arranged on the surface of the connecting plate (9). Only three data line through holes penetrating the surfaces of the flange and the connecting plate (9) are formed on the installation piece. Deformation data interfaces (11), magnetic flux leakage data interfaces (12) and inertial navigation data interfaces (13) are respectively installed at the three data line through holes on the surface of the flange.

5. A ferromagnetic pipeline deformation, magnetic flux leakage, and inertial navigation integrated data acquisition device according to claim 4, characterized in that: The pipeline deformation detection component includes a number of deformation detection pieces uniformly arranged on the circumferential surface of the middle through-axis (2). The deformation detection piece includes a fixed block (14) fixedly connected to the middle through-axis (2). A detection arm (15) is rotatably connected to the surface of the fixed block (14). An L-shaped rod (16) is fixedly connected to the end of the fixed block (14) facing the front through-axis (1). A tension spring (17) is fixedly connected between the detection arm (15) and the L-shaped rod (16). A deformation sensor (18) is arranged at the hinge joint between the detection arm (15) and the fixed block (14) for detecting the deflection angle of the detection arm (15).

6. The integrated data acquisition device for ferromagnetic pipeline deformation, magnetic flux leakage, and inertial navigation according to claim 5, characterized in that: The magnetic flux leakage detection component includes two permanent magnets (19) sleeved on the surface of the rear through-axis (3). A number of magnetic flux leakage sensors (20) are arranged on the surface of the rear through-axis (3) along its circumferential direction between the two permanent magnets (19).

7. An integrated data acquisition device for ferromagnetic pipeline deformation, magnetic flux leakage, and inertial navigation according to claim 6, characterized in that: The connecting piece includes a connecting rod (21) fixedly connected to the center of the surface of the connecting flange (8) and the center of one end of the end of the rear through-axis (3). A hanging hook (22) is arranged at the end of the connecting rod (21). Hanging rings (23) for the hanging hook (22) to hang on are arranged at the end of the middle through-axis (2) facing the front through-axis (1) and the end of the rear through-axis (3) facing the middle through-axis (2).

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