A marine oil pipeline detection device

Abstract

The utility model belongs to the field of ocean petroleum engineering technology especially relates to a marine petroleum pipeline detection device, including detection main part, the lower portion of detection main part is provided with two front and back each other symmetrical positioning mechanism, the lower portion of detection main part still is provided with visual detection mechanism, two positioning mechanism pass through the cooperation of hydraulic assembly and gyro wheel, can position this device in the outside of detection pipeline quickly, and drive this device along detection pipeline axial movement through the drive of detection main part, visual detection mechanism forms 360 degree detection to detection pipeline through multiple groups of camera equipment, and through the light bar light supplement, can accurate detection pipeline's outer surface. Through the multiple groups of camera of annular arrangement in visual detection mechanism to pipeline form 360 degree detection, single detection can cover the whole week of pipeline, reduce the repeated adjustment operation frequency, effectively shorten the detection period, reduce the device energy consumption and operation cost.

Description

Technical Field

[0001] This utility model belongs to the field of marine oil engineering technology, and in particular relates to a marine oil pipeline inspection device. Background Technology

[0002] Offshore oil pipelines are the core transportation carriers connecting offshore oil and gas fields with onshore terminals. Operating in complex environments in shallow and mid-water seas, they are subject to seawater corrosion, ocean currents, seabed silt abrasion, and third-party interference such as ship anchoring. This makes them prone to defects such as thinning of the pipeline wall, weld cracks, and localized deformation of the outer wall. If these defects are not identified in a timely manner, they can easily lead to oil and gas leaks, causing serious marine ecological pollution and huge economic losses. Therefore, specialized detection equipment is urgently needed to accurately identify, locate, and assess the extent of pipeline defects to ensure the long-term stable operation of pipelines.

[0003] Existing marine oil pipeline inspection devices mostly adopt a multi-technology module integrated design of "ultrasonic detection + magnetic flux leakage detection + visual imaging". Among them, the ultrasonic detection module can capture changes in pipeline wall thickness, the magnetic flux leakage detection module can accurately identify cracks in the inner wall of the pipeline, and the visual imaging module can intuitively observe damage on the outer surface of the pipeline. The device is also equipped with a buoyancy adjustment unit, which can adapt to different water depth environments in shallow and medium seas. It does not rely on manual diving operations, effectively avoiding safety risks such as decompression sickness and marine life attacks faced by divers. It can also complete long-distance pipeline periodic inspections according to a preset inspection path, meeting the basic inspection requirements of regular pipeline maintenance. However, existing devices have a narrow visual inspection coverage area, and a single inspection can only cover a local area of ​​the pipeline. Frequent adjustments to the device position are required for repeated operations, which not only prolongs the inspection cycle but also increases the energy consumption and operating costs of the device. In view of this, we propose a marine oil pipeline inspection device. Utility Model Content

[0004] The purpose of this invention is to provide a marine oil pipeline inspection device to solve the problems mentioned in the background art.

[0005] In view of this, the present invention provides a marine oil pipeline inspection device, including an inspection body, two symmetrical positioning mechanisms arranged at the bottom of the inspection body, and a visual inspection mechanism arranged at the bottom of the inspection body.

[0006] The two positioning mechanisms, through the cooperation of hydraulic components and rollers, can quickly position the device outside the inspection pipe and drive the device to move along the axial direction of the inspection pipe by the driving of the inspection body; the visual inspection mechanism forms a 360° inspection of the inspection pipe through multiple sets of camera equipment and can accurately inspect the outer surface of the pipe by supplementing light with light strips.

[0007] In this technical solution, the positioning and 360° visual inspection of the pipeline is achieved through the cooperation of the detection body, the positioning mechanism, and the visual inspection mechanism.

[0008] In the above technical solution, the positioning mechanism further includes a first arc-shaped mounting bracket, the upper side of which is fixedly connected to the lower surface of the detection body housing.

[0009] In this technical solution, the first arc-shaped mounting bracket provides the mounting base for the positioning mechanism.

[0010] In the above technical solution, further, two sets of mutually symmetrical hydraulic telescopic rods are fixedly installed on the inner side wall of the first arc-shaped mounting frame, and both sets of hydraulic telescopic rods are electrically connected to the control unit inside the detection body.

[0011] In this technical solution, the hydraulic telescopic rod is used to drive the anti-slip rollers to clamp the pipe and achieve device positioning.

[0012] In the above technical solution, furthermore, one end of each of the two sets of hydraulic telescopic rod piston rods is fixedly installed with a roller mounting bracket.

[0013] In this technical solution, the roller mounting bracket provides an installation carrier for the anti-slip rollers.

[0014] In the above technical solution, both sets of roller mounting brackets are rotatably equipped with anti-slip rollers, and the two sets of anti-slip rollers roll along the axial direction of the detection pipe.

[0015] In this technical solution, the anti-slip roller enables the device to move stably along the pipeline axis.

[0016] In the above technical solution, the visual inspection mechanism further includes a second arc-shaped mounting frame, the upper side of which is fixedly connected to the lower surface of the inspection body housing, and a set of equally spaced strip lights are fixedly connected to the inner side wall of the second arc-shaped mounting frame, and all of the strip lights are electrically connected to the control unit inside the inspection body.

[0017] In this technical solution, the second arc-shaped mounting bracket provides a mounting base for the strip light and the camera, and the strip light enables detection and supplementary lighting.

[0018] In the above technical solution, further, two sets of ring-shaped mounting bases are fixedly connected to the inner wall of the second arc-shaped mounting frame. Cameras are fixedly installed on the side of the two sets of mounting bases away from the inner wall of the second arc-shaped mounting frame. Both sets of cameras are electrically connected to the storage unit and control unit inside the detection body. The two sets of cameras form a 360° detection of the detection pipeline.

[0019] In this technical solution, the mounting base provides a mounting carrier for the camera, which enables 360° visual inspection of the outer surface of the pipe.

[0020] The beneficial effects of this utility model are:

[0021] 1. This marine oil pipeline inspection device uses multiple cameras arranged in a ring within the visual inspection mechanism to perform 360° inspection of the pipeline. A single inspection can cover the entire circumference of the pipeline, reducing the number of repeated adjustments, effectively shortening the inspection cycle, and reducing the energy consumption and operating costs of the device.

[0022] 2. This marine oil pipeline inspection device uses a hydraulic telescopic rod to drive anti-slip rollers to clamp the pipeline. With the anti-slip design of the anti-slip rollers, the device can achieve rapid positioning and stable movement on the pipeline, adapting to the pipeline inspection needs in complex seabed environments.

[0023] 3. The marine oil pipeline inspection device, with its visual inspection mechanism featuring a strip light supplementary lighting function, can improve the lighting conditions in the seawater environment. Combined with the collaborative work of multiple cameras, it can enhance the accuracy of identifying defects on the pipeline's outer surface. Attached Figure Description

[0024] Figure 1 This is a three-dimensional front view structural diagram of the present invention;

[0025] Figure 2 This is a three-dimensional structural diagram of the positioning mechanism of this utility model;

[0026] Figure 3 This is a three-dimensional structural diagram of the visual inspection mechanism of this utility model;

[0027] Figure 4 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0028] Figure 5 This utility model Figure 3 Enlarged structural diagram at point B.

[0029] The markings in the diagram are as follows:

[0030] 1. Detection body; 2. Positioning mechanism; 201. First arc-shaped mounting frame; 202. Hydraulic telescopic rod; 203. Roller mounting frame; 204. Anti-slip roller; 3. Visual inspection mechanism; 301. Second arc-shaped mounting frame; 302. Strip light; 303. Mounting base; 304. Camera. Detailed Implementation

[0031] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.

[0032] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0033] Example 1: This example provides a marine oil pipeline inspection device, including an inspection body 1. Two positioning mechanisms 2 are arranged symmetrically at the bottom of the inspection body 1. A visual inspection mechanism 3 is also arranged at the bottom of the inspection body 1.

[0034] The two positioning mechanisms 2, through the cooperation of hydraulic components and rollers, can quickly position the device outside the inspection pipe, and drive the device to move along the axial direction of the inspection pipe by the inspection body 1; the visual inspection mechanism 3 forms a 360° inspection of the inspection pipe through multiple sets of camera equipment, and can accurately inspect the outer surface of the pipe by supplementing light with light strips.

[0035] The main body of the inspection unit 1 is made of 316L stainless steel, with fluororubber waterproof sealing rings at the joints, achieving an IP68 waterproof rating, suitable for long-term operation in shallow seawater environments. Its internal control unit and drive components are waterproofed to prevent seawater infiltration and circuit malfunctions. Four sets of corrosion-resistant thrusters are evenly installed around the perimeter of the main body 1. These thrusters use titanium alloy shells and waterproof motors. The control unit adjusts the speed and direction of each thruster, allowing for flexible movement of the device on the seabed. This facilitates crossing pipe joints or adjusting the inspection position without relying on external traction equipment. Through the coordination of the positioning mechanism 2 and the visual inspection mechanism 3, combined with the movement capabilities of the main body 1, a single inspection can cover the entire circumference of the pipeline without frequent adjustments to the device's position, effectively shortening the underwater pipeline inspection cycle and reducing energy consumption and operating costs.

[0036] Example 2: This example provides a marine oil pipeline inspection device. In addition to the technical solutions of the above examples, it also has the following technical features: the positioning mechanism 2 includes a first arc-shaped mounting bracket 201, and the upper side of the first arc-shaped mounting bracket 201 is fixedly connected to the lower surface of the housing of the inspection body 1.

[0037] The first arc-shaped mounting bracket 201 is made of high-strength, corrosion-resistant alloy material with chrome plating for corrosion protection, which can resist seawater corrosion and silt abrasion. The connection between the bracket and the housing of the detection body 1 is secured with waterproof bolts, and waterproof gaskets are added to the bolt heads to prevent seawater from seeping in through the connection gaps. As the core installation foundation of the positioning mechanism 2, its arc-shaped structure is adapted to the outer wall of the pipeline, which can provide stable support for the subsequent hydraulic telescopic rod 202. When the detection body 1 moves the device to the target pipeline area on the seabed, the structural strength of the first arc-shaped mounting bracket 201 can withstand the impact of water flow during the movement, ensuring that the positioning mechanism 2 is not easily deformed, ensuring the stability of the subsequent device positioning, and avoiding the impact of the detection accuracy on the mechanism offset after movement.

[0038] Example 3: This example provides a marine oil pipeline inspection device. In addition to the technical solutions of the above examples, it also has the following technical features: two sets of symmetrical hydraulic telescopic rods 202 are fixedly installed on the inner side wall of the first arc-shaped mounting frame 201. Both sets of hydraulic telescopic rods 202 are electrically connected to the control unit inside the inspection body 1.

[0039] The piston rod of the hydraulic telescopic rod 202 is made of 2Cr13 corrosion-resistant stainless steel and coated with polytetrafluoroethylene anti-corrosion coating to prevent corrosion of the rod by the high salinity of the seawater. The cylinder sealing end adopts a double-layer fluororubber sealing structure to prevent hydraulic oil leakage and seawater seepage into the cylinder. Through electrical connection with the control unit of the detection body 1, the telescopic stroke can be precisely controlled. When the detection body 1 moves the device to the side of the detection pipeline on the seabed, the control unit can simultaneously drive the two sets of hydraulic telescopic rods 202 to extend, and drive the anti-slip rollers 204 to quickly fit against the outer wall of the pipeline. Even under the disturbance of the seawater flow on the seabed, the clamping force on the pipeline can be balanced, preventing the device from deviating from the detection path and ensuring that the positioning action after the movement is efficient and accurate.

[0040] Example 4: This example provides a marine oil pipeline inspection device. In addition to the technical solutions of the above examples, it also has the following technical features: one end of each of the piston rods of the two sets of hydraulic telescopic rods 202 is fixedly installed with a roller mounting bracket 203.

[0041] The roller mounting bracket 203 is made of die-cast aluminum alloy with anodized anti-corrosion treatment, which balances lightweight and corrosion resistance, reducing the load on the seabed and lowering the energy consumption of the thruster of the detection body 1. The connection between the roller and the piston rod of the hydraulic telescopic rod 202 is made by welding and then coating with epoxy anti-corrosion paint to enhance the corrosion resistance of the connection. As the mounting carrier of the anti-slip roller 204, its structural strength can withstand the impact of mud and sand on the roller when the device moves on the seabed, as well as the frictional force of moving along the pipeline after positioning, ensuring that the anti-slip roller 204 is not easy to loosen when rotating, and providing stable support for the movement or adjustment of the drive device of the detection body 1.

[0042] Example 5: This example provides a marine oil pipeline inspection device. In addition to the technical solutions of the above examples, it also has the following technical features: both sets of roller mounting frames 203 are rotatably mounted with anti-slip rollers 204, and the two sets of anti-slip rollers 204 roll along the axial direction of the pipeline being inspected.

[0043] The anti-slip roller 204 is made of wear-resistant polyurethane material, with an internal stainless steel frame to enhance structural strength. The surface of the roller is covered with anti-slip rubber with anti-corrosion additives, which not only prevents the outer wall of the subsea pipeline from being scratched, but also resists seawater corrosion. The roller's rotating shaft is made of 440C stainless steel, and a waterproof deep groove ball bearing is installed at the shaft end. The bearing is filled with waterproof grease to prevent seawater from entering the bearing and causing jamming. When the detection body 1 moves the device to the vicinity of the pipeline on the seabed, the anti-slip roller 204 can first contact the outer wall of the pipeline for auxiliary positioning. Its design of rolling along the pipeline axis, combined with the friction of the anti-slip rubber, allows the device to move stably along the pipeline under the drive of the detection body 1, reducing the frequency of swimming adjustments, improving detection efficiency, and preventing the device from slipping under the push of the ocean current.

[0044] Example 6: This example provides a marine oil pipeline inspection device. In addition to the technical solutions of the above examples, it also has the following technical features: the visual inspection mechanism 3 includes a second arc-shaped mounting bracket 301. The upper side of the second arc-shaped mounting bracket 301 is fixedly connected to the lower surface of the housing of the inspection body 1. A set of equally spaced strip lights 302 are fixedly connected to the inner side wall of the second arc-shaped mounting bracket 301. All of the strip lights 302 are electrically connected to the control unit inside the inspection body 1.

[0045] The second arc-shaped mounting bracket 301 and the first arc-shaped mounting bracket 201 use the same corrosion-resistant alloy material and anti-corrosion treatment process to ensure that they age synchronously with the positioning mechanism 2 in the seabed environment, thus extending the overall service life of the device. The outer shell of the strip light 302 is made of high-transmittance waterproof glass and sealed with a stainless steel pressure ring. The lamp beads are waterproof LEDs, and the inside of the lamp body is potted with waterproof material. The waterproof rating is the same as that of the detection body 1. When the detection body 1 moves the device to the detection position on the seabed, the strip light 302 can be turned on under the command of the control unit. Its equidistant arrangement design can provide uniform supplementary light to the outer surface of the pipe, avoiding the dark environment on the seabed or the obstruction of light by mud and sand during the movement, which would cause blind spots in the image captured by the camera 304, thus improving the accuracy of pipe defect identification.

[0046] Example 7: This example provides a marine oil pipeline inspection device. In addition to the technical solutions of the above examples, it also has the following technical features: two sets of annularly arranged mounting bases 303 are fixedly connected to the inner wall of the second arc-shaped mounting frame 301. Cameras 304 are fixedly installed on the side of the two sets of mounting bases 303 away from the inner wall of the second arc-shaped mounting frame 301. Both sets of cameras 304 are electrically connected to the storage unit and control unit inside the inspection body 1. The two sets of cameras 304 form a 360° inspection of the pipeline.

[0047] The mounting base 303 is made of the same die-cast aluminum alloy and has the same anti-corrosion treatment as the roller mounting bracket 203. Its connection with the second arc-shaped mounting bracket 301 is fixed with waterproof screws to ensure that seabed water will not seep in from the connection point. The camera 304 has a stainless steel shell and a scratch-resistant and waterproof coated glass lens with an IP68 waterproof rating. A rubber dustproof ring is installed around the lens to prevent seabed sediment from affecting the shooting. When the detection body 1 moves the device to the target pipeline on the seabed and completes the positioning, the two sets of ring-shaped cameras 304 can start the detection immediately. The device can cover the entire circumference of the pipeline without rotating the device, reducing the adjustment steps in the seabed operation. The detection data is transmitted to the storage unit of the detection body 1 in real time. With the movement performance of the detection body 1, continuous detection of multiple pipeline sections can be realized, avoiding the failure to detect defects in the seabed pipeline due to data lag or untimely movement adjustment, and further reducing the risk of oil and gas leakage.

[0048] Working principle: During inspection, the hydraulic telescopic rod 202 of the positioning mechanism 2 extends, driving the anti-slip rollers 204 on the roller mounting frame 203 to fit against the outer wall of the pipe, quickly positioning the device outside the pipe being inspected; the inspection body 1 drives the device to move along the axial direction of the pipe, while the strip light 302 of the visual inspection mechanism 3 turns on to provide supplementary lighting, and the cameras 304 arranged in a ring on the second arc-shaped mounting frame 301 perform 360° shooting inspection on the outer surface of the pipe. The inspection data is transmitted to the storage unit of the inspection body 1 in real time, realizing continuous and accurate inspection of defects on the outer surface of the pipe.

[0049] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A marine oil pipeline inspection device, characterized in that, It includes a detection body (1), and two positioning mechanisms (2) that are symmetrical to each other are provided below the detection body (1). A visual detection mechanism (3) is also provided below the detection body (1). The two positioning mechanisms (2) can quickly position the device outside the inspection pipe through the cooperation of hydraulic components and rollers, and drive the device to move along the axial direction of the inspection pipe through the drive of the inspection body (1); the visual inspection mechanism (3) forms a 360° inspection of the inspection pipe through multiple sets of camera equipment, and can accurately inspect the outer surface of the pipe through the supplementary light of the light strip.

2. The marine oil pipeline inspection device according to claim 1, characterized in that, The positioning mechanism (2) includes a first arc-shaped mounting bracket (201), the upper side of which is fixedly connected to the lower surface of the housing of the detection body (1).

3. The marine oil pipeline inspection device according to claim 2, characterized in that, Two sets of symmetrical hydraulic telescopic rods (202) are fixedly installed on the inner side wall of the first arc-shaped mounting bracket (201). Both sets of hydraulic telescopic rods (202) are electrically connected to the control unit inside the detection body (1).

4. The marine oil pipeline inspection device according to claim 3, characterized in that, One end of the piston rod of both sets of hydraulic telescopic rods (202) is fixedly installed with a roller mounting bracket (203).

5. The marine oil pipeline inspection device according to claim 4, characterized in that, Both sets of roller mounting brackets (203) are rotatably equipped with anti-slip rollers (204), and the two sets of anti-slip rollers (204) roll along the axial direction of the detection pipe.

6. The marine oil pipeline inspection device according to claim 1, characterized in that, The visual inspection mechanism (3) includes a second arc-shaped mounting bracket (301). The upper side of the second arc-shaped mounting bracket (301) is fixedly connected to the lower surface of the housing of the inspection body (1). A set of equally spaced strip lights (302) are fixedly connected to the inner side wall of the second arc-shaped mounting bracket (301). All of the strip lights (302) are electrically connected to the control unit inside the inspection body (1).

7. The marine oil pipeline inspection device according to claim 6, characterized in that, The inner wall of the second arc-shaped mounting bracket (301) is fixedly connected to two sets of ring-shaped mounting bases (303). On the side of each set of mounting bases (303) away from the inner wall of the second arc-shaped mounting bracket (301), a camera (304) is fixedly installed. Both sets of cameras (304) are electrically connected to the storage unit and control unit inside the detection body (1). The two sets of cameras (304) form a 360° detection of the detection pipeline.

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