Multifunctional dragging head for novel repair technology construction of submarine pipeline

Abstract

The invention discloses a submarine pipeline novel repair technology construction multifunctional dragging head which comprises a shell, a pull rod and a tension sensor, the shell comprises a first shell body, a second shell body, a third shell body and an inner shell body, the two ends of the second shell body are connected with the first shell body and the third shell body respectively, the inner shell body is arranged in the first shell body, the inner shell body is in a hemispherical shape, and the pull rod is arranged in the inner shell body. An inner cavity of the first shell is in a hemisphere shape matched with the inner shell, the inner shell can slide in a hemisphere shape relative to the first shell, the first shell and the inner shell are provided with through holes corresponding to the pull rod, the pull rod stretches into the inner shell through the through holes and is rotationally connected with the inner shell, a tension sensor is arranged in the second shell, and the third shell is connected with the tension sensor. According to the invention, in offshore construction and simulation test scenes, the multi-elbow complex-path subsea pipeline can be adapted, in-pipe visual detection and dragging tension data acquisition are synchronously realized, and support is provided for operation safety assessment, process optimization and fault pre-judgment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of offshore oil equipment, and in particular to a multifunctional pulling head for new repair technology construction of a submarine pipeline. BACKGROUND

[0002] In the repair operation of a submarine pipeline, new repair technology (RTP pipe and inner lining composite hose) is widely concerned due to its advantages of short construction period, low cost and solving the problem of pipeline corrosion. Before the construction process of the technology, the corrosion, welding slag and structural state in the submarine pipeline need to be understood. During the construction process, the flexible hose needs to be pulled into the pipeline to be repaired. During this process, the pulling force value needs to be accurately controlled, the state in the pipeline needs to be recorded in high definition, and the pulling device needs to have good passability and flexibility to adapt to complex working conditions such as different curvature radii and different pipe diameters of the submarine pipeline.

[0003] The existing pulling device has single function and many defects. The pulling force cannot be accurately measured, which cannot guarantee the safety of construction. The state in the submarine pipeline cannot be effectively recorded, and subsequent analysis cannot be effectively carried out. When the submarine pipeline has different angles and curvature radii, the flexibility is insufficient, which not only affects the construction efficiency, but also may cause construction failure and waste a lot of manpower and resources. Therefore, it is necessary to develop a multifunctional pulling head that meets the construction requirements of new repair technology of a submarine pipeline. SUMMARY

[0004] The present application aims to provide a multifunctional pulling head for new repair technology construction of a submarine pipeline to solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: A multifunctional pulling head for new repair technology construction of a submarine pipeline, comprising a shell, a pulling rod and a tension sensor, the shell comprises a first shell, a second shell, a third shell and an inner shell, two ends of the second shell are connected with the first shell and the third shell respectively, the inner shell is arranged in the first shell, the inner shell is semispherical, the inner cavity of the first shell is semispherical and matched with the inner shell, the inner shell can slide relative to the semispherical first shell, the first shell and the inner shell are provided with through holes corresponding to the pulling rod, the pulling rod extends into the inner shell through the through holes, the pulling rod is rotationally connected with the inner shell, the second shell is provided with a tension sensor, and the third shell is connected with the tension sensor.

[0006] Optionally, the second housing is cylindrical, and an end face is provided at one end of the second housing near the third housing. The tension sensor is disposed on the end face, and through holes are provided on the end face and the tension sensor. A protrusion is provided at one end of the third housing near the second housing. The protrusion passes through the through hole and is connected to the second housing and the tension sensor by a nut.

[0007] Optionally, a camera is provided inside the third housing, the camera being used to collect image data inside the pipe, and the lens of the camera facing outward toward the pipe.

[0008] Optionally, one end of the pull rod extending into the first housing is provided with an electrical component, which includes a power module, a data storage module, and a data transmission module. The power module is used to supply power to the tension sensor and the camera. The data storage module is used to store the pipeline image data collected by the camera and the drag force value data detected by the tension sensor. The data transmission module is used to transmit the pipeline image data collected by the camera and the drag force value data detected by the tension sensor.

[0009] Optionally, the third housing is cylindrical, and a groove is provided on the edge of the third housing away from the second housing, and the camera is disposed in the groove.

[0010] Optionally, a bearing is provided between the inner housing and the pull rod.

[0011] Optionally, the second housing is smoothly connected to the first housing and the third housing, and the first housing, the second housing and the third housing have a capsule-shaped streamlined structure.

[0012] In summary, the technical effects and advantages of this invention are as follows: The pull rod of this invention has rotation and swing functions, which significantly improves its performance in curved paths. At the same time, through the synergistic effect of the camera, tension sensor and built-in electrical components, it realizes real-time status monitoring and data recording during the towing process. This invention can be adapted to complex pipeline paths with multiple bends in offshore construction and simulation test scenarios, and simultaneously realizes visualized detection inside the pipeline and acquisition of towing force data, providing support for operation safety assessment, process optimization and fault prediction. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1This is a schematic diagram of the appearance of a multi-functional tractor head used in the construction of a novel subsea pipeline repair technology according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of a multi-functional tractor head used in the construction of a novel subsea pipeline repair technology according to an embodiment of the present invention.

[0015] The components are: 1. Pull rod; 2. Bearing; 3. First housing; 4. Inner housing; 5. Second housing; 6. Third housing; 7. Camera; 8. Tension sensor; 9. Electrical components; 10. Nut; 11. Groove. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0018] This embodiment proposes a multi-functional tractor head for the construction of a new subsea pipeline repair technology, such as... Figure 1 and Figure 2 As shown, the device includes a pull rod 1, a bearing 2, a housing, a camera 7, a tension sensor 8, electrical components 9, and a nut 10. These components work together to enable flexible operation and status detection during the pulling process of the housing. The housing includes a first housing 3, a second housing 5, a third housing 6, and an inner housing 4. The two ends of the second housing 5 are connected to the first housing 3 and the third housing 6, respectively. The inner housing 4 is located inside the first housing 3 and is hemispherical. The inner cavity of the first housing 3 is also hemispherical and can slide relative to the hemispherical shape of the first housing 3. The first housing 3 and the inner housing 4 have through holes corresponding to the pull rod 1. The pull rod 1 extends into the inner housing 4 through the through holes and is rotatably connected to the inner housing 4. The tension sensor 8 is located inside the second housing 5. The third housing 6 and the tension sensor 8 are fixedly connected by bolts and nuts 10 on the upper part of the third housing 6.

[0019] In this embodiment, the pull rod 1 is rotatably connected to the inner housing 4. The inner housing 4 and the first housing 3 form a hemispherical sliding structure. The outer wall of the inner housing 4 matches the hemispherical inner cavity machined in the first housing 3. A circular through hole is provided at the top of both the inner housing 4 and the first housing 3 for the pull rod 1 to pass through. The rotatable connection between the pull rod 1 and the inner housing 4 allows the pull rod 1 to rotate freely 360° around its axis and also swing within a certain angle range, thereby improving its maneuverability during towing operations and adapting to the towing needs of complex paths. The tension sensor 8 can detect the towing force value during operation and accurately read the towing force data.

[0020] Specifically, the second housing 5 is cylindrical, and the end of the second housing 5 near the third housing 6 is provided with an end face. The tension sensor 8 is provided on the end face, and the end face and the tension sensor 8 are respectively provided with through holes. The end of the third housing 6 near the second housing 5 is provided with a protruding bolt. The protruding bolt passes through the through hole and is connected to the second housing 5 and the tension sensor 8 through a nut 10.

[0021] In this embodiment, the bottom of the second housing 5 and the middle of the tension sensor 8 are both provided with coaxial circular through holes, and the top of the third housing 6 is provided with a cylindrical protruding bolt adapted to the through hole. The protruding bolt passes through the through hole at the bottom of the second housing 5 and the through hole in the middle of the tension sensor 8 in sequence, and is then fastened by a nut 10, thereby achieving reliable fixation of the second housing 5, the tension sensor 8 and the third housing 6, and ensuring stable force transmission during the dragging process.

[0022] Specifically, the third housing 6 houses a camera 7, which is used to collect image data inside the pipeline, enabling visual inspection of the pipeline interior. During construction, the camera 7 can record the internal environmental conditions of the subsea pipeline in real time. The lens of the camera 7 faces outward toward the pipeline. The camera 7 is a commercially available product and includes its own lighting unit.

[0023] Furthermore, an electrical component 9 is provided at one end of the pull rod 1 that extends into the first housing 3. The electrical component 9 includes a power module, a data storage module, and a data transmission module. The power module is used to supply power to the tension sensor 8 and the camera 7. The data storage module is used to store the image data inside the pipe collected by the camera 7 and the drag force value data detected by the tension sensor 8.

[0024] Optionally, the third housing 6 is cylindrical, and a camera 7 is integrated on the edge of the third housing 6 away from the second housing 5. A groove 11 is provided on the edge of the third housing 6 away from the second housing 5, and the camera 7 is disposed in the groove 11.

[0025] In this embodiment, the installation position of the camera 7 is designed to fully cover the monitoring area inside the pipe. A groove 11 is provided on the inner side of the lower edge of the third housing 6, and the camera 7 is installed inside the groove 11. The lower edge of the third housing 6 is slightly higher than the camera 7, thus forming circumferential protection for the camera and effectively preventing damage to the camera 7 from debris inside the pipe during dragging. This application does not impose specific limitations on the specific number and placement of the cameras 7. The camera 7, in conjunction with the tension sensor 8, enables visualized detection of the operation process and dynamic acquisition of mechanical parameters, providing multi-dimensional data support for safety assessment, process optimization, and fault prediction in pipeline repair construction.

[0026] Optionally, a bearing 2 is provided between the inner housing 4 and the pull rod 1. A ball bearing 2 is installed at the bottom of the pull rod 1, and the bearing 2 is installed inside the inner housing 4. The arrangement of the bearing 2 facilitates the rotation of the pull rod 1.

[0027] Furthermore, the second housing 5 is smoothly connected to the first housing 3 and the third housing 6, respectively, wherein, as shown in the figure... Figure 2 As shown, the second housing 5 is fixedly connected to the first housing 3 by four bolts on the outside, and the third housing 6 is fixedly connected to the second housing 5 by bolts and nuts 10 located on the upper part of the third housing 6. The first housing 3, the second housing 5, and the third housing 6 have a capsule-shaped streamlined structure. The overall capsule-shaped streamlined structure of the towing head, the cylindrical design of the housing, and the smooth transition of the connection can reduce the frictional resistance with the inside of the pipe during towing. Combined with the rotation and swing function of the pull rod 1, it significantly improves the passing performance in curved paths.

[0028] In this embodiment, the pull rod 1 is connected to the existing drive device, and the cylindrical third housing 6 is bolted to the pipe to be towed. Electrical components 9 power the camera 7 and the tension sensor 8. The camera 7 records the conditions inside the pipe, the tension sensor 8 detects the towing force, and the electrical components 9 store and transmit the relevant data. Construction data is transmitted in real-time to the offshore construction platform control center via wires embedded in the cable, thus enabling real-time monitoring of the construction process.

[0029] In summary, the pull rod in this embodiment has rotation and swing functions, significantly improving its performance in curved paths. Simultaneously, through the coordinated action of the camera, tension sensor, and built-in electrical components, it achieves real-time status monitoring and data recording during the towing process. This embodiment can adapt to complex pipeline paths with multiple bends in offshore construction and simulation testing scenarios, simultaneously achieving visualized detection inside the pipeline and acquisition of towing force data, providing support for operational safety assessment, process optimization, and fault prediction. This device is suitable for new repair technologies such as hose towing construction and equipment pipe penetration testing, which require simultaneous completion of corrosion detection and tension data recording inside the original pipeline, and involve complex path adaptation, covering both practical engineering applications and simulation testing verification.

[0030] For ease of explanation, spatial relative terms such as "upper," "lower," "outer," and "inner" are used in the embodiments to describe the relationship of one element or feature relative to another element or feature shown in the figures. It should be understood that, in addition to the orientations shown in the figures, spatial terms are intended to include different orientations of the device during use or operation. Therefore, the exemplary term "lower" can encompass both upper and lower orientations.

[0031] Moreover, relational terms such as “3” and “4” are merely used to distinguish one component from another that has the same name, without necessarily requiring or implying any such actual relationship or order between the components.

[0032] Although preferred embodiments of the present invention have been described above in conjunction with the accompanying drawings, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not limiting. Those skilled in the art can make many specific modifications under the guidance of the present invention without departing from the spirit of the invention and the scope of protection of the claims, and these modifications all fall within the scope of protection of the present invention.

Claims

1. A multi-functional tractor head for construction of a novel subsea pipeline repair technology, characterized in that, The device includes a housing, a pull rod, and a tension sensor. The housing comprises a first housing, a second housing, a third housing, and an inner housing. The two ends of the second housing are connected to the first housing and the third housing, respectively. The inner housing is disposed inside the first housing and is hemispherical. The inner cavity of the first housing is a hemispherical shape adapted to the inner housing. The inner housing can slide relative to the hemispherical shape of the first housing. The first housing and the inner housing have through holes corresponding to the pull rod. The pull rod extends into the inner housing through the through holes and is rotatably connected to the inner housing. The tension sensor is disposed inside the second housing, and the third housing is connected to the tension sensor.

2. The multi-functional tractor head for construction of a novel subsea pipeline repair technology according to claim 1, characterized in that, The second housing is cylindrical. One end of the second housing near the third housing has an end face. The tension sensor is disposed on the end face. The end face and the tension sensor are respectively provided with through holes. One end of the third housing near the second housing has a protrusion. The protrusion passes through the through hole and is connected to the second housing and the tension sensor by a nut.

3. The multi-functional tractor head for construction of a novel subsea pipeline repair technology according to claim 1, characterized in that, The third housing contains a camera with its lens facing outward toward the pipe. The camera is used to collect image data inside the pipe.

4. The multi-functional tractor head for construction of a novel subsea pipeline repair technology according to claim 3, characterized in that, An electrical component is provided at one end of the pull rod that extends into the first housing. The electrical component includes a power module, a data storage module, and a data transmission module. The power module is used to supply power to the tension sensor and the camera. The data storage module is used to store the image data inside the pipe collected by the camera and the drag force value data detected by the tension sensor. The data transmission module is used to transmit the image data inside the pipe collected by the camera and the drag force value data detected by the tension sensor.

5. The multi-functional tractor head for construction of a novel subsea pipeline repair technology according to claim 3, characterized in that, The third housing is cylindrical, and a groove is provided on the edge of the third housing away from the second housing, and the camera is disposed in the groove.

6. The multi-functional tractor head for construction of a novel subsea pipeline repair technology according to claim 1, characterized in that, A bearing is provided between the inner housing and the tie rod.

7. The multi-functional tractor head for construction of a novel subsea pipeline repair technology according to claim 1, characterized in that, The second shell is smoothly connected to the first shell and the third shell, and the first shell, the second shell and the third shell have a capsule-shaped streamlined structure.

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