Ocean internal wave monitoring and early warning device for offshore oil and gas platform

Abstract

The invention relates to the field of ocean monitoring, and discloses an ocean internal wave monitoring and early warning device for an ocean oil and gas platform, and the device comprises a seabed comprehensive observation platform which comprises a pedestal installed at the seabed, the top of the pedestal is provided with a seabed main frame, and the left side of the seabed main frame is provided with an acoustic Doppler flow velocity profiler 1. According to the device, the underwater data acquisition cabin is arranged to transmit data acquired by a seabed comprehensive observation platform to the underwater coupling communication cabin, inductive coupling transmission is carried out through a plastic-coated steel cable, and the data is transmitted to the sea surface coupling communication cabin and the battery cabin II; the two ends of the plastic-coated steel cable are in contact with seawater and grounded through the second mechanical rotating ring and the first mechanical rotating ring, a loop is formed, and finally data are transmitted to a shore-based data receiving center station through a 4G communication module arranged in the 4G communication master control cabin. According to the device provided by the invention, efficient seabed environment data monitoring, efficient data transmission and more detailed ocean data monitoring functions are realized.

Description

Technical Field

[0001] This invention relates to the field of marine monitoring technology, and in particular to a marine internal wave monitoring and early warning device for offshore oil and gas platforms. Background Technology

[0002] Offshore oil and gas platforms require long-term monitoring of marine hydrological elements in the waters near the in-situ oil platform, including ocean current profile data from the sea surface to the seabed, as well as environmental factors such as seabed temperature, salinity, and depth. Current technologies, such as fixed or buoy-based observation platforms, typically use equipment like ADCP (Acoustic Doppler Current Profiler) and CTD (Conductivity, Temperature, and Depth) sensors to collect data on ocean currents, temperature, and salinity. However, these methods are relatively outdated, mainly due to the following limitations: Single-point observation buoys: anchored to the sea surface and equipped with sensors for data acquisition, but with limited monitoring range; Submersible mooring systems: connecting surface buoys to underwater observation equipment via cables for layered observation, but data transmission relies on acoustic or wired links, resulting in poor real-time performance; Satellite remote sensing technology: used for large-scale marine environmental monitoring, but with low spatial resolution, unable to acquire near-bottom or profile data. Summary of the Invention

[0003] To address the aforementioned problems, the purpose of this invention is to provide a marine internal wave monitoring and early warning device for offshore oil and gas platforms, which has efficient seabed environmental data monitoring, efficient data transmission, and more detailed marine data monitoring functions, thereby solving the problems of inefficiency and incompleteness in marine data monitoring in the prior art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a marine internal wave monitoring and early warning device for offshore oil and gas platforms, used for transmitting data with a shore-based data center, comprising: a seabed integrated observation platform, including a base installed on the seabed, a seabed main frame installed on the top of the base, an acoustic Doppler current profiler I installed on the left side of the seabed main frame, a battery compartment I, a CTD (Conductivity, Temperature, Depth) instrument, and an acoustic Doppler current profiler II installed on the right side of the seabed main frame, a bracket welded to the middle of the seabed main frame, and an underwater coupling communication compartment installed in the middle of the seabed main frame, wherein the acoustic Doppler current profiler I, the CTD instrument, and the acoustic Doppler current profiler II are all electrically connected to the underwater data acquisition compartment. The support frame has a mechanical rotating ring I installed at its bottom; a sea surface communication buoy, comprising a buoyancy disc floating on the sea surface and a sea surface main frame, with a connecting column installed at the top of the sea surface main frame, the connecting column being fixedly connected to the buoyancy disc, a 4G communication main control cabin installed at the top of the buoyancy disc, a mechanical rotating ring II installed at the top of the inner wall of the sea surface main frame, a battery compartment II and a sea surface coupling communication compartment respectively installed on the inner wall of the sea surface main frame, the sea surface coupling communication compartment being electrically connected to the 4G communication main control cabin; a plastic-coated steel cable is fixedly connected to the bottom of the mechanical rotating ring II, the plastic-coated steel cable passes downward through the sea surface coupling communication compartment, the bottom end of the plastic-coated steel cable passes downward through the underwater coupling communication compartment, and is fixedly connected to the top of the mechanical rotating ring I.

[0005] Preferably, a resistance mechanism is installed on the outer surface of the support and the lower top of the main sea surface frame, and the plastic-coated steel cable passes through the middle of the resistance mechanism; The resistance mechanism is provided in two sets and includes a fixing ring. The two sets of fixing rings are respectively fixedly installed on the outer surface of the support and the lower top of the main frame of the sea surface. Multiple sets of limiting blocks are fixedly connected to the inner wall of the fixing ring. The resistance mechanism also includes a rubber tube fixedly sleeved on the outer surface of the plastic-coated steel cable. A connecting cylinder is fixedly installed on the outer surface of the rubber tube. Multiple sets of receiving columns are fixedly connected to the outer circumference of the connecting cylinder. A spring and a telescopic column are movably sleeved inside the receiving column. The telescopic column is elastically supported in the receiving column by the spring. A rotating shaft is movably sleeved on one side of the telescopic column. Both ends of the rotating shaft are fixedly connected to the rotating wheel. The outer surface of the rotating wheel rolls against the inner ring surface of the fixing ring.

[0006] Preferably, the limiting blocks are arranged in four groups and are distributed equidistantly in a circle on the inner ring surface of the fixed ring. The rotating wheels are also arranged in four groups and are distributed equidistantly in a circle on the inner ring surface of the fixed ring. The rotating wheels and the limiting blocks are arranged alternately.

[0007] Preferably, the rotating wheel and the limiting block are staggered by 45°.

[0008] Preferably, the axial cross-section of the telescopic column is "T" shaped, and the bottom of the receiving column is provided with two sets of balance holes, which are located on both sides of one end of the inner side of the telescopic column.

[0009] Preferably, the upper and lower sides of the outer surface of the telescopic column are fixedly connected to limit sleeves, and the two sides of the outer surface of the rotating shaft are fixedly connected to limit rings, with the limit rings abutting against the limit sleeves.

[0010] Preferably, the outer surface of the plastic-coated steel cable is equipped with multiple sets of olive-shaped buoys located on the seabed, so that the portion of the plastic-coated steel cable above the resistance mechanism can be in a vertical position.

[0011] Preferably, the buoyancy discs are arranged in four or more groups and overlap longitudinally, the top of the connecting column extends upward to the top of the buoyancy discs and is fixed by bolts, and the buoyancy discs are made of glass microsphere material.

[0012] Preferably, the 4G communication main control cabin has a built-in 4G communication module and GNSS module, and achieves data communication with the shore-based data receiving center station through the antenna dome on the top of the 4G communication main control cabin. The underwater coupling communication cabin, the plastic-coated steel cable and the sea surface coupling communication cabin transmit data using the principle of inductive coupling transmission.

[0013] Preferably, the two ends of the plastic-coated steel cable are grounded and form a circuit through mechanical swivel 2 and mechanical swivel 1 respectively. Both mechanical swivel 2 and mechanical swivel 1 have built-in inductive coupling transmission modules including inductive coupling magnetic rings and inductive coupling coils. Battery compartment 2 is used to power the 4G communication main control compartment and the sea surface coupling communication compartment. Battery compartment 1 is used to power the acoustic Doppler current profiler 1, CTD temperature, salinity and depth measuring instrument, acoustic Doppler current profiler 2 and underwater data acquisition compartment.

[0014] The present invention has the following advantages due to the adoption of the above technical solutions: 1. This invention, redesigned, achieves efficient seabed environmental data monitoring, efficient data transmission, and more detailed marine data monitoring functions. It utilizes a comprehensive seabed observation platform installed on the seabed, which collects relevant seabed data using an acoustic Doppler current profiler (I), a CTD (Conductivity, Temperature, Depth) instrument, and an acoustic Doppler current profiler (II). This data includes: ocean current profiles from the sea surface to the seabed, seabed temperature, salinity, and depth data, and high-resolution ocean current profiles of the seabed. A floating communication buoy is then deployed on the seabed to receive the data collected by the comprehensive seabed observation platform. The sea surface communication buoy is connected and transmits data via a plastic-coated steel cable. An underwater data acquisition cabin transmits data collected by the seabed integrated observation platform to the underwater coupling communication cabin. The data is then transmitted via inductive coupling through the plastic-coated steel cable to the sea surface coupling communication cabin and battery compartment two. Mechanical rotating rings two and one ground the two ends of the plastic-coated steel cable to the seawater, forming a circuit. Finally, the data is transmitted to the shore-based data receiving center station via the 4G communication module built into the 4G communication main control cabin. This invention's device achieves efficient seabed environmental data monitoring, efficient data transmission, and more detailed marine data monitoring functions.

[0015] 2. This invention reduces mechanical wear caused by the rotation of the mechanical rotating rings 1 and 2 at both ends of the PVC-coated steel cable by adding two sets of resistance mechanisms to the seabed integrated observation platform and the sea surface communication buoy. Simultaneously, since the resistance mechanisms only reduce the rotational speed of the PVC-coated steel cable, the torque on the cable itself is also controlled within a reasonable range, effectively extending the service life of the device. To achieve this, the device of this invention fixes the fixing rings to the seabed integrated observation platform and the sea surface communication buoy as a support platform. The PVC-coated steel cable provides support for the rubber cylinder, connecting cylinder, and receiving column. The connecting cylinder provides a buffer connection between the PVC-coated steel cable and the connecting cylinder. When the PVC-coated steel cable drives the receiving column to rotate, a limit block is set to cause the rotating wheel to move to the protruding position on the surface of the limit block and compress the spring inward, generating radial resistance of the PVC-coated steel cable and increasing the resistance during rotation. This offsets part of the rotational torque generated by the PVC-coated steel cable with the seawater flow, thereby reducing the mechanical wear caused by the PVC-coated steel cable driving the mechanical rotating ring 1 during rotation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the marine internal wave monitoring and early warning device for offshore oil and gas platforms in an embodiment of the present invention; Figure 2 This is a three-dimensional schematic diagram of the integrated seabed observation platform in an embodiment of the present invention; Figure 3 This is a schematic diagram of the drag mechanism, mechanical rotating ring 1, and underwater coupling communication cabin in an embodiment of the present invention; Figure 4This is a partial cross-sectional view of the front of the integrated seabed observation platform in an embodiment of the present invention; Figure 5 for Figure 4 Enlarged schematic diagram of the structure at point A; Figure 6 This is a three-dimensional schematic diagram of a sea surface communication buoy in an embodiment of the present invention; Figure 7 for Figure 6 Enlarged schematic diagram of the structure at point B; Figure 8 This is a partial cross-sectional view of the front of the sea surface communication buoy in an embodiment of the present invention; Figure 9 for Figure 8 Enlarged schematic diagram of the structure at point C; Figure 10 This is a three-dimensional structural diagram of the sea surface communication buoy in an embodiment of the present invention; Figure 11 This is a top sectional view of the resistance mechanism in an embodiment of the present invention; Figure 12 This is a schematic diagram of the separation of the resistance mechanism in an embodiment of the present invention; Figure 13 This is a schematic diagram illustrating the coupling transmission principle of the plastic-coated steel cable, the underwater coupling communication cabin, and the sea surface coupling communication cabin in an embodiment of the present invention. Figure 14 This is a schematic diagram of the electrical topology connection of the seabed integrated observation platform in an embodiment of the present invention; Figure 15 This is a schematic diagram of the electrical topology connection of the sea surface communication buoy in an embodiment of the present invention; Reference numerals: 1. Subsea integrated observation platform; 10. Base; 11. Subsea main frame; 12. Acoustic Doppler current profiler I; 13. Battery compartment I; 14. CTD temperature, salinity, and depth measuring instrument; 15. Acoustic Doppler current profiler II; 16. Underwater data acquisition compartment; 17. Mechanical rotating ring I; 18. Underwater coupling communication compartment; 19. Support frame; 2. Plastic-coated steel cable; 3. Sea surface communication buoy; 30. Sea surface main frame; 31. Connecting column; 32. Buoyancy disc; 33. 4G communication main control compartment; 34. Mechanical rotating ring II; 35. Battery compartment II; 36. Sea surface coupling communication compartment; 4. Olive-shaped buoy; 5. Resistance mechanism; 50. Fixing ring; 51. Limiting block; 52. Rubber cylinder; 53. Connecting cylinder; 54. Receiving column; 55. Telescopic column; 56. Spring; 57. Rotating shaft; 58. Rotating wheel; 59. Balance hole. Detailed Implementation

[0017] To address the inefficiencies and lack of comprehensiveness in existing marine data monitoring technologies, this invention provides a marine internal wave monitoring and early warning device for offshore oil and gas platforms. The device includes a seabed integrated observation platform with a base installed on the seabed. A seabed main frame is mounted on top of the base, and an acoustic Doppler current profiler is installed on the left side of the main frame. The device transmits data collected by the seabed integrated observation platform to an underwater coupling communication cabin via an underwater data acquisition cabin. The data is then transmitted via inductive coupling through a plastic-coated steel cable to a surface coupling communication cabin and a battery compartment. Mechanical rotating rings two and one ground the two ends of the plastic-coated steel cable to the seawater, forming a circuit. Finally, the data is transmitted to a shore-based data receiving center station via a 4G communication module built into the 4G communication main control cabin. This invention achieves efficient seabed environmental data monitoring, efficient data transmission, and more detailed marine data monitoring capabilities.

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention are within the scope of protection of the present invention.

[0019] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0020] In one embodiment of the present invention, an ocean internal wave monitoring and early warning device for offshore oil and gas platforms is provided, which is used to transmit data with a shore-based data center. In this embodiment, as... Figures 1 to 15 As shown, the device includes: The seabed integrated observation platform 1 includes a base 10 installed on the seabed. A seabed main frame 11 is installed on the top of the base 10. An acoustic Doppler current profiler 12 is installed on the left side of the seabed main frame 11. A battery compartment 13, a CTD (Conductivity, Temperature, Depth) instrument 14, and an acoustic Doppler current profiler 2 15 are installed on the right side of the seabed main frame 11. A bracket 19 is welded to the middle of the seabed main frame 11. An underwater coupling communication compartment 18 is installed in the middle of the seabed main frame 11. The acoustic Doppler current profiler 12, the CTD 14, and the acoustic Doppler current profiler 2 15 are all electrically connected to the underwater data acquisition compartment 16. A mechanical rotating ring 17 is installed at the bottom of the bracket 19.

[0021] The sea surface communication buoy 3 includes a buoyancy disc 32 floating on the sea surface and a sea surface main frame 30. A connecting column 31 is installed on the top of the sea surface main frame 30, and the connecting column 31 is fixedly connected to the buoyancy disc 32. A 4G communication main control cabin 33 is installed on the top of the buoyancy disc 32. A mechanical rotating ring 34 is installed on the top of the inner wall of the sea surface main frame 30. A battery compartment 35 and a sea surface coupling communication compartment 36 are installed on the inner wall of the sea surface main frame 30, and the sea surface coupling communication compartment 36 is electrically connected to the 4G communication main control cabin 33.

[0022] The bottom of the mechanical rotating ring 2 34 is fixedly connected to a plastic-coated steel cable 2. The plastic-coated steel cable 2 passes downward through the sea surface coupling communication compartment 36, and the bottom end of the plastic-coated steel cable 2 passes downward through the underwater coupling communication compartment 18 and is fixedly connected to the top of the mechanical rotating ring 17.

[0023] The device of this invention has been redesigned to achieve efficient seabed environmental data monitoring, efficient data transmission, and more detailed marine data monitoring functions. It utilizes a seabed integrated observation platform 1 installed on the seabed, which collects relevant seabed data via an acoustic Doppler current profiler 12, a CTD (Conductivity, Temperature, Depth) meter 14, and an acoustic Doppler current profiler 25. This data includes: ocean current profile data from the sea surface to the seabed, seabed water temperature, salinity, and depth data, and high-resolution ocean current profile data from the seabed. A floating sea surface communication buoy 3 is then deployed on the seabed to receive the data collected by the seabed integrated observation platform 1. The seabed integrated observation platform 1 and the sea surface communication buoy... The signal buoy 3 is connected and transmits data via a plastic-coated steel cable 2. An underwater data acquisition cabin 16 transmits data collected by the seabed integrated observation platform 1 to an underwater coupling communication cabin 18. The data is then transmitted via inductive coupling through the plastic-coated steel cable 2 to a surface coupling communication cabin 36 and a battery cabin 35. Mechanical rotating rings 34 and 17 connect both ends of the plastic-coated steel cable 2 to the seawater, forming a circuit. Finally, the data is transmitted to the shore-based data receiving center station via a 4G communication module built into the 4G communication main control cabin 33. This invention's device achieves efficient seabed environmental data monitoring, efficient data transmission, and more detailed marine data monitoring functions.

[0024] In the above embodiment, a resistance mechanism 5 is installed on the outer surface of the support 19 and the lower top of the main frame 30, and the plastic-coated steel cable 2 passes through the middle of the resistance mechanism 5.

[0025] The resistance mechanism 5 includes two sets of fixed rings 50, which are respectively fixedly installed on the outer surface of the support 19 and the lower top of the main frame 30. Multiple sets of limiting blocks 51 are fixedly connected to the inner wall of the fixed rings 50. The resistance mechanism 5 also includes a rubber cylinder 52 fixedly sleeved on the outer surface of the plastic-coated steel cable 2. A connecting cylinder 53 is fixedly installed on the outer surface of the rubber cylinder 52. Multiple sets of receiving columns 54 are fixedly connected to the outer circumference of the connecting cylinder 53. A spring 56 and a telescopic column 55 are movably sleeved inside the receiving column 54. The telescopic column 55 is elastically supported in the receiving column 54 by the spring 56. A rotating shaft 57 is movably sleeved at one end of the telescopic column 55. Both ends of the rotating shaft 57 are fixedly connected to rotating wheels 58, and the outer surface of the rotating wheels 58 rolls against the inner ring surface of the fixed ring 50.

[0026] The device of this invention reduces mechanical wear caused by the rotation of the mechanical swivel rings 17 and 34 connected to both ends of the plastic-coated steel cable 2 by adding two sets of resistance mechanisms 5 to the seabed integrated observation platform 1 and the sea surface communication buoy 3. Simultaneously, since the resistance mechanism 5 only reduces the rotational speed of the plastic-coated steel cable 2, the torque on the cable itself is also controlled within a reasonable range, effectively extending the service life of the device. To achieve this, the device of this invention fixes the fixing ring 50 to the seabed integrated observation platform 1 and the sea surface communication buoy 3 as a support platform, utilizing the plastic-coated steel... Cable 2 provides support for rubber cylinder 52, connecting cylinder 53 and receiving column 54. Connecting cylinder 53 is responsible for providing a buffer connection between plastic-coated steel cable 2 and connecting cylinder 53. When plastic-coated steel cable 2 drives receiving column 54 to rotate, the wheel 58 moves to the position of the protrusion on the surface of the limiting block 51 by setting a limit block 51 and compresses the spring 56 inward to generate radial resistance of plastic-coated steel cable 2, and increases the resistance when plastic-coated steel cable 2 rotates, offsetting part of the rotational torque generated by plastic-coated steel cable 2 with seawater flow, thereby reducing the mechanical wear generated when plastic-coated steel cable 2 drives mechanical rotating rings 17 and 24 to rotate.

[0027] In this embodiment, four sets of limiting blocks 51 are arranged circumferentially and evenly on the inner ring surface of the fixed ring 50. Four sets of rotating wheels 58 are also arranged circumferentially and evenly on the inner ring surface of the fixed ring 50. The rotating wheels 58 and the limiting blocks 51 are staggered. Preferably, in this embodiment, the rotating wheels 58 and the limiting blocks 51 are staggered by 45°.

[0028] like Figure 11 As shown, the four sets of limit blocks 51 correspond to the four sets of rotating wheels 58 respectively. When the rotating wheel 58 rotates to be close to the limit block 51, all the rotating wheels 58 can be limited and abutted against the corresponding limit block 51.

[0029] In this embodiment, the axial cross-section of the telescopic column 55 is "T" shaped, and two sets of balance holes 59 are provided at the bottom of the receiving column 54. The two sets of balance holes 59 are located on both sides of one end of the inner side of the telescopic column 55.

[0030] like Figure 5 and Figure 11 As shown, the inner wall of the receiving column 54 has balance holes 59 on both sides located at the inner end of the telescopic column 55 to maintain the water pressure balance between the inner and outer sides of the receiving column 54, which can reduce the influence of seawater pressure on the telescopic movement of the telescopic column 55.

[0031] In this embodiment, limit sleeves are fixedly connected to both the upper and lower sides of the outer surface of the telescopic column 55, and limit rings are fixedly connected to both sides of the outer surface of the rotating shaft 57, with the limit rings abutting against the limit sleeves.

[0032] like Figure 12 As shown, the rotating wheel 58 is located on both sides of the outer surface of the telescopic column 55 and is installed at both ends of the rotating shaft 57. To prevent the rotating shaft 57 from running out of the end of the telescopic column 55, a limiting ring and a limiting sleeve are provided to restrict the movement of the rotating shaft 57.

[0033] In the above embodiment, multiple sets of olive-shaped buoys 4 located on the seabed are installed on the outer surface of the plastic-coated steel cable 2, so that the part of the plastic-coated steel cable 2 above the resistance mechanism 5 can be in a vertical state.

[0034] like Figure 1 As shown, the plastic-coated steel cable 2 is used to connect the sea surface communication buoy 3 and the seabed integrated observation platform 1. The lower outer side of the plastic-coated steel cable 2 is equipped with more than 16 sets of olive-shaped buoys 4 to offset the weight of the plastic-coated steel cable 2 in the seawater, thereby realizing the buoyancy configuration of the plastic-coated steel cable 2 in the water.

[0035] In the above embodiment, the buoyancy discs 32 are arranged in four or more groups and overlap longitudinally. The top of the connecting column 31 extends upward to the top of the buoyancy discs 32 and is fixed by bolts. The buoyancy discs 32 are made of glass microsphere material.

[0036] In this embodiment, the net buoyancy of the buoyancy disc 32 is about 128 kg, and its pressure resistance is not less than 1000 m underwater, providing positive buoyancy for the plastic-coated steel cable 2.

[0037] In the above embodiments, the 4G communication main control cabin 33 has a built-in 4G communication module and GNSS module, and achieves data communication with the shore-based data receiving center station through the antenna dome on the top of the 4G communication main control cabin 33. The underwater coupling communication cabin 18, the plastic-coated steel cable 2 and the sea surface coupling communication cabin 36 transmit data using the principle of inductive coupling transmission.

[0038] The above scheme adopts Faraday's electromagnetic induction principle, Lenz's law, and RS485 bus control and transmission logic. The overall physical architecture is a carrier control and data transmission system. Two or more magnetic rings share a single magnetic / electric field, which is realized through a closed loop formed by a plastic-coated steel cable and seawater. Multiple magnetic rings and coils form multiple windings for magnetic / electric field excitation transformation and carrier transmission. One winding is connected to the inductively coupled control unit as the host (i.e., underwater data acquisition cabin 16 and underwater coupling communication cabin 18). When transmitting data, a frequency-modulated carrier signal modulated by the control unit is applied to both ends of the coil, resulting in a change in the magnetic field and then a change in the electric field, thereby generating an alternating current in the closed loop. The secondary coil can sense this alternating current change caused by the magnetic / electric field and analyze it to extract the original carrier signal. The host data is then received through a digital processing unit, thus realizing the inductively coupled carrier transmission of data.

[0039] In the above embodiments, the two ends of the plastic-coated steel cable 2 are grounded and form a circuit through mechanical rotating ring 2 34 and mechanical rotating ring 17 respectively. Both mechanical rotating ring 2 34 and mechanical rotating ring 17 have built-in inductive coupling transmission modules including inductive coupling magnetic rings and inductive coupling coils. Battery compartment 2 35 is used to supply power to the 4G communication main control compartment 33 and the sea surface coupling communication compartment 36. Battery compartment 13 is used to supply power to the acoustic Doppler current profiler 12, CTD temperature, salinity and depth measuring instrument 14, acoustic Doppler current profiler 2 15 and underwater data acquisition compartment 16.

[0040] like Figure 12 As shown, the underwater data acquisition cabin 16 has a built-in system main control MCU module unit and power management module, which are used to acquire data from two ADCPs (Acoustic Doppler Current Profiler 12 and Acoustic Doppler Current Profiler 2 15) and one CTD (CTD Temperature, Salinity and Depth Measurement Instrument 14), and control the underwater coupling communication cabin 18 to transmit data to the sea surface communication buoy 3 through the plastic-coated steel cable 2. The underwater data acquisition cabin 16 is connected to the two ADCPs and one CTD through the RS232 interface of the watertight cable. The 4G communication main control cabin 33 has an embedded main control MCU unit and power management module, which can receive measurement data from the seabed integrated observation platform 1. The 4G communication main control cabin 33 includes a pressure-resistant cabin, in which the main control MCU unit, GNSS positioning module and 4G communication module are integrated and installed. The outer shell of the cabin is made of TC4 titanium alloy + wave-transparent design.

[0041] In summary, the working principle of this invention is remote, specifically including the following steps: First, the seabed integrated observation platform 1 is installed on the seabed, and the sea surface communication buoy 3 floats on the sea surface through the buoyancy disc 32. The 4G communication main control cabin 33 transmits data to the shore-based data receiving center station.

[0042] The battery compartment 13 supplies power to all parts of the seabed integrated observation platform 1, including the acoustic Doppler current profiler 12, the CTD temperature, salinity, and depth measuring instrument 14, the acoustic Doppler current profiler 2 15, the underwater data acquisition compartment 16, and the underwater coupling communication compartment 18. These components collect relevant seabed data, including: ocean current profile data from the sea surface to the seabed, high-resolution ocean current profile data from the seabed, and seabed water temperature, salinity, and depth data. The seabed integrated observation platform 1 performs synchronous measurements every 3 minutes. The sea surface communication buoy 3 acquires the measurement data from the seabed integrated observation platform 1 via underwater inductive coupling communication. The principle of inductive coupling communication is as follows: Figure 13 As shown, the data is transmitted from the sea surface coupling communication cabin 36 to the 4G communication main control cabin 33. The 4G communication module built into the 4G communication main control cabin 33 uses 4G signals to package the measurement data and send it to the offshore oil operation platform and the shore-based data receiving center station, so as to realize the real-time reception and viewing of the measurement data of the seabed integrated observation platform, the positioning data of the sea surface communication buoy, and the status data information of the system at sea and on land.

[0043] Then, as Figure 1 As shown, since the PVC-coated steel cable 2 is located in seawater, the flowing seawater will exert a horizontal thrust on the PVC-coated steel cable 2, causing the PVC-coated steel cable 2 to rotate. The mechanical swivel rings 34 and 17 connected to its two ends respectively adapt to the rotation of the PVC-coated steel cable 2, thereby eliminating the torque generated by the rotation of the PVC-coated steel cable 2. Figure 11 As shown, the plastic-coated steel cable 2 rotates in the resistance mechanism 5. The sea surface communication buoy 3 drives the rubber cylinder 52, connecting cylinder 53, receiving column 54 and rotating wheel 58 fixed thereto to rotate. The telescopic column 55 and rotating wheel 58 are provided with rebound pressure by the compressed spring 56, so that the rotating wheel 58 can press against the inner ring surface of the fixed ring 50. When the plastic-coated steel cable 2 rotates, the rotating wheel 58 is driven to rotate along the inner ring surface of the fixed ring 50. When the rotating wheel 58 moves to the surface of the limiting block 51, the protruding surface of the limiting block 51 pushes the rotating wheel 58 and telescopic column 55 toward the interior of the receiving column 54, thereby increasing the resistance of the plastic-coated steel cable 2 to drive the receiving column 54 and rotating wheel 58 to rotate, offsetting part of the rotational torque of the plastic-coated steel cable 2, while maintaining the rotational state of the plastic-coated steel cable 2, and appropriately reducing the mechanical rotational wear of the plastic-coated steel cable 2 driving the mechanical rotating ring 17 and mechanical rotating ring 34.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A marine internal wave monitoring and early warning device for offshore oil and gas platforms, used for transmitting data to a shore-based data center, characterized in that, include: The seabed integrated observation platform (1) includes a base (10) installed on the seabed. A seabed main frame (11) is installed on the top of the base (10). An acoustic Doppler current profiler (12) is installed on the left side of the seabed main frame (11). A battery compartment (13), a CTD temperature, salinity and depth measuring instrument (14), and an acoustic Doppler current profiler (15) are installed on the right side of the seabed main frame (11). A bracket (19) is welded to the middle of the seabed main frame (11). An underwater coupling communication compartment (18) is installed in the middle of the seabed main frame (11). The acoustic Doppler current profiler (12), the CTD temperature, salinity and depth measuring instrument (14), and the acoustic Doppler current profiler (15) are all electrically connected to the underwater data acquisition compartment (16). A mechanical rotating ring (17) is installed at the bottom of the bracket (19). The sea surface communication buoy (3) includes a buoyancy disc (32) floating on the sea surface and a sea surface main frame (30); a connecting column (31) is installed on the top of the sea surface main frame (30), the connecting column (31) is fixedly connected to the buoyancy disc (32), and a 4G communication main control cabin (33) is installed on the top of the buoyancy disc (32); a mechanical rotating ring II (34) is installed on the top of the inner wall of the sea surface main frame (30), and a battery compartment II (35) and a sea surface coupling communication cabin (36) are respectively installed on the inner wall of the sea surface main frame (30), and the sea surface coupling communication cabin (36) is electrically connected to the 4G communication main control cabin (33); The bottom of the mechanical rotating ring two (34) is fixedly connected to a plastic-coated steel cable (2), which passes downward through the sea surface coupling communication cabin (36). The bottom end of the plastic-coated steel cable (2) passes downward through the underwater coupling communication cabin (18) and is fixedly connected to the top of the mechanical rotating ring one (17).

2. The marine internal wave monitoring and early warning device for offshore oil and gas platforms as described in claim 1, characterized in that, The outer surface of the support (19) and the lower top of the main frame (30) are both equipped with a resistance mechanism (5), and the plastic-coated steel cable (2) passes through the middle of the resistance mechanism (5). The resistance mechanism (5) is provided with two sets and includes a fixing ring (50). The two sets of fixing rings (50) are respectively fixedly installed on the outer surface of the bracket (19) and the lower top of the main frame (30). The inner wall of the fixing ring (50) is fixedly connected with multiple sets of limiting blocks (51). The resistance mechanism (5) further includes a rubber cylinder (52) fixedly sleeved on the outer surface of the plastic-coated steel cable (2). A connecting cylinder (53) is fixedly installed on the outer surface of the rubber cylinder (52). Multiple sets of receiving columns (54) are fixedly connected to the outer circumferential surface of the connecting cylinder (53). A spring (56) and a telescopic column (55) are movably sleeved inside the receiving column (54). The telescopic column (55) is elastically supported in the receiving column (54) by the spring (56). A rotating shaft (57) is movably sleeved on one side of the telescopic column (55). Both ends of the rotating shaft (57) are fixedly connected to a rotating wheel (58). The outer surface of the rotating wheel (58) rolls against the inner ring surface of the fixed ring (50).

3. The marine internal wave monitoring and early warning device for offshore oil and gas platforms according to claim 2, characterized in that, The limiting blocks (51) are set in four groups and are distributed equidistantly in a circle on the inner ring surface of the fixed ring (50). The rotating wheels (58) are also set in four groups and are distributed equidistantly in a circle on the inner ring surface of the fixed ring (50). The rotating wheels (58) and the limiting blocks (51) are arranged alternately.

4. A marine internal wave monitoring and early warning device for offshore oil and gas platforms according to claim 3, characterized in that, The rotating wheel (58) and the limiting block (51) are staggered by 45°.

5. A marine internal wave monitoring and early warning device for offshore oil and gas platforms according to claim 3, characterized in that, The telescopic column (55) has a "T" shaped axial section. The bottom of the receiving column (54) is provided with two sets of balance holes (59), which are located on both sides of one end of the telescopic column (55).

6. A marine internal wave monitoring and early warning device for offshore oil and gas platforms according to claim 5, characterized in that, Limiting sleeves are fixedly connected to both the upper and lower sides of the outer surface of the telescopic column (55), and limiting rings are fixedly connected to both sides of the outer surface of the rotating shaft (57), with the limiting rings abutting against the limiting sleeves.

7. A marine internal wave monitoring and early warning device for offshore oil and gas platforms according to claim 1, characterized in that, The outer surface of the plastic-coated steel cable (2) is equipped with multiple sets of olive-shaped buoys (4) located on the seabed, so that the part of the plastic-coated steel cable (2) above the resistance mechanism (5) can be in a vertical state.

8. A marine internal wave monitoring and early warning device for offshore oil and gas platforms according to claim 2, characterized in that, The buoyancy discs (32) are arranged in four or more groups and overlap longitudinally. The top of the connecting column (31) extends upward to the top of the buoyancy discs (32) and is fixed by bolts. The buoyancy discs (32) are made of glass microsphere material.

9. A marine internal wave monitoring and early warning device for offshore oil and gas platforms according to claim 8, characterized in that, The 4G communication main control cabin (33) has a built-in 4G communication module and GNSS module, and achieves data communication with the shore-based data receiving center station through the antenna dome on the top of the 4G communication main control cabin (33). The underwater coupling communication cabin (18), the plastic-coated steel cable (2) and the sea surface coupling communication cabin (36) transmit data using the principle of inductive coupling transmission.

10. A marine internal wave monitoring and early warning device for offshore oil and gas platforms according to claim 9, characterized in that, The two ends of the plastic-coated steel cable (2) are grounded and form a circuit through mechanical swivel ring two (34) and mechanical swivel ring one (17), respectively; Both the mechanical rotating ring two (34) and the mechanical rotating ring one (17) have built-in inductive coupling transmission modules including an inductive coupling magnetic ring and an inductive coupling coil; The second battery compartment (35) is used to supply power to the 4G communication main control compartment (33) and the sea surface coupling communication compartment (36); The battery compartment one (13) is used to power the acoustic Doppler current profiler one (12), the CTD temperature, salinity and depth measuring instrument (14), the acoustic Doppler current profiler two (15) and the underwater data acquisition compartment (16).

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