Subsea in situ test nodule system

Abstract

This application provides a reusable in-situ seabed testing mooring system, relating to the field of underwater surveying technology. The system includes: a base for coupling with the seabed surface, the area of ​​which corresponds to the pressure of the in-situ testing mooring system and the bearing capacity of the seabed surface; and a detection module fixed to the upper side of the base, comprising a penetration unit and a probe equipped with a sensor. The detection module utilizes the penetration unit to drive the probe into or out of the seabed surface to repeatedly perform in-situ testing of the undisturbed strata. This embodiment avoids the problem of long-term burial of sensors in the strata for in-situ testing, effectively reducing sensor interference with strata movement and changes, thereby obtaining more accurate monitoring data and improving the accuracy of in-situ testing results.

Description

Technical Field

[0001] This application relates to the field of underwater surveying technology, and more specifically, to a seabed in-situ testing mooring system that can perform repeated operations. Background Technology

[0002] When conducting in-situ underwater testing, sensors are typically inserted into the strata using specialized marine geological exploration equipment to collect data from the original strata. However, for long-term geological data collection, sensors must be buried within the strata, and a seabed foundation must be installed to support data acquisition and operation, thus obtaining data on how the strata change over time.

[0003] However, the relevant operational methods all require the sensors to be buried entirely in the marine strata. Regardless of whether flexible or rigid sensors are used, the long-term burial of the sensors will interfere with the movement and changes of the strata, thus making it impossible for long-term monitoring data to accurately reflect the movement properties of the strata. Summary of the Invention

[0004] This application provides a repeatable in-situ seabed testing mooring system that solves the problem in existing in-situ testing where sensors interfere with changes in strata movement, resulting in inaccurate long-term monitoring data reflecting the nature of strata movement. To achieve this objective, this application provides the following solutions.

[0005] According to one aspect of the embodiments of this application, a seabed in-situ testing mooring system capable of repeated operations is provided, comprising: A base for coupling with the underwater surface, the area of ​​which corresponds to the pressure of the in-situ test mooring system and the pressure-bearing capacity of the underwater surface. The detection module is fixed to the upper side of the base. The detection module includes a penetration unit and a probe equipped with a sensor. The detection module is used to drive the probe through the penetration unit to penetrate or pull out the underwater ground to repeatedly perform in-situ testing of the original strata.

[0006] In one possible implementation, the detection module includes a straightening unit with guide rods and a straightening beam. The guide rods are arranged on both sides of the penetration unit and their bottoms are fixed on the base. The two ends of the straightening beam are slidably connected to the guide rods. The upper part of the probe is connected to the straightening beam.

[0007] In one possible implementation, the penetration unit includes a drive motor and a pair of friction wheels, the probe passes between the friction wheels and contacts the friction wheels, the base has a penetration hole in the area corresponding to the probe, and the probe is inserted into the underwater surface along the penetration hole; The drive motor is connected to the friction wheel to drive the probe rod to rise and fall using the friction wheel.

[0008] In one possible implementation, the detection module further includes a movable frame, a mounting frame, a first clamping driver, and a second clamping driver. The mounting frame is fixed to the base, the movable frame is movably fixed to the upper part of the mounting frame, and the friction wheel is mounted on the movable frame. The first clamping driver and the second clamping driver are disposed on the mounting frame. The driving end of the first clamping driver is opposite to the movable frame to drive the movable frame to slide. The driving end of the second clamping driver contacts the friction wheel to drive the friction wheel to clamp or release the probe.

[0009] In one possible implementation, a charging transmission module is also included, which is located at the lower part of the mounting frame, and the probe passes through the charging transmission module; The charging and transmission module is equipped with an induction coil corresponding to the probe to charge the sensor and transmit data.

[0010] In one possible implementation, it also includes a data return module and an electronic control cabin, the data return module and the electronic control cabin being fixed on the base, and the electronic control cabin being connected to the data return module, the charging transmission module and the detection module respectively to control the operation of the seabed in-situ testing mooring system; The data feedback module is used to receive the data to be transmitted from the electronic measurement and control cabin and to remotely transmit the data to be transmitted.

[0011] In one possible implementation, the data return module includes a first winch, a traction cable, and a satellite beacon. One end of the traction cable is fixed to the satellite beacon, and the other end is wound around the first winch and electrically connected to the electronic telemetry and control cabin. The first winch is fixed to the base. The satellite beacon is equipped with a communication circuit for wireless communication with a satellite, and the buoyancy experienced by the satellite beacon on the seabed is greater than the weight of the satellite beacon itself. The first winch is used to retrieve and deploy the satellite beacon using the traction cable.

[0012] In one possible implementation, the sensor is arranged along the axial direction of the probe rod, and the position and number of the sensor in the probe rod, as well as the length of the probe rod, correspond to the working depth. The sensor includes one or more of the following: a mechanical testing module, a magnetotelluric testing module, an electrical testing module, and an acoustic testing module.

[0013] In one possible implementation, a traction module is also included, which is equipped with a float and a traction rope. One end of the traction rope is connected to the top of the probe rod, and the other end is connected to the float. The traction module is used to pull the probe rod.

[0014] In one possible implementation, a power generation module is further included, comprising a power generation mechanism, a cable, a second winch, and a battery compartment. The power generation mechanism is located on the float, one end of the cable is connected to the power generation mechanism, and the other end is wound around the second winch. The battery compartment is electrically connected to the cable on the second winch to store electrical energy, and the detection module is electrically connected to the battery compartment.

[0015] In one possible implementation, the second winch includes a fixed bracket, an acceleration drum, and a slip ring, wherein the fixed bracket is fixed to the base, and the acceleration drum is rotatably fixed to the top of the fixed bracket; The first part of the slip ring is fixedly connected to one side of the acceleration roller, the second part of the slip ring is fixedly connected to the fixed bracket, the first part and the second part are electrically connected, and the battery compartment is electrically connected to the second part; The cable is coiled around the outside of the acceleration drum, and the end of the cable is electrically connected to the first part.

[0016] In one possible implementation, the acceleration roller is provided with multiple sets of planetary gears, a transmission gear ring, and a fixed shaft with an idler wheel. The planetary gears, transmission gear ring, and multiple wheels form a multi-stage transmission mechanism. The sub-transmission mechanisms of the multi-stage transmission mechanism are connected to each other in a step-by-step manner, and the number of rotations increases step by step. The last sub-transmission mechanism of the multi-stage transmission mechanism is connected to the roller.

[0017] In one possible implementation, each of the sub-transmission mechanisms includes a transmission gear ring, an idler gear, and at least one planetary gear. The transmission gear ring is rotatably fixed to the fixed shaft, the idler gear is fixed to the fixed shaft, the middle of the transmission gear ring is recessed to form a transmission groove, the groove wall of the transmission groove is meshed with the planetary gear, and the idler gear is located in the transmission groove and meshes with the side of the planetary gear away from the transmission groove. One end of the planetary gear is rotatably fixed to the transmission gear ring of the next stage sub-transmission mechanism or the acceleration roller, and the first stage sub-transmission mechanism is provided with a counterweight.

[0018] In one possible implementation, the counterweight is fixed to the side of the transmission gear ring of the first-stage sub-transmission mechanism, and the planetary gear of the last-stage sub-transmission mechanism is connected to the acceleration roller.

[0019] The beneficial effects of the technical solutions provided in this application are: The reusable in-situ seabed testing mooring system provided in this application includes: a base for coupling with the seabed surface, the area of ​​which corresponds to the pressure of the in-situ seabed testing mooring system and the pressure-bearing capacity of the seabed surface; and a detection module fixed to the upper side of the base. The detection module includes a penetration unit and a probe equipped with a sensor. The detection module is used to drive the probe through the penetration unit to penetrate or withdraw from the seabed surface to repeatedly perform in-situ testing of the original strata. The embodiments of this application can avoid the problem of long-term burial of sensors in the strata for in-situ testing, effectively reduce the interference of sensors on strata movement and changes, thereby obtaining higher accuracy of monitoring data and improving the accuracy of in-situ test results. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments of this application will be briefly introduced below.

[0021] Figure 1 A structural diagram of a seabed in-situ testing mooring system for repeatable operations provided in an embodiment of this application; Figure 2 A side view of a seabed in-situ testing mooring system for repeatable operations provided in an embodiment of this application; Figure 3 A top view of the seabed in-situ testing mooring system for repeatable operations provided in the embodiments of this application; Figure 4 A cross-sectional view of a seabed in-situ testing mooring system for repeatable operations provided in an embodiment of this application; Figure 5 A structural diagram of the second winch provided in an embodiment of this application; Figure 6 A structural diagram of the second winch section provided in the embodiments of this application; Figure 7 A structural diagram of the probe provided in the embodiments of this application; Figure 8 This is a structural diagram of the data return module provided in an embodiment of this application; Figure 9 A structural diagram of a satellite beacon provided in an embodiment of this application; Figure 10 This is a schematic diagram of the propeller configuration provided in an embodiment of this application; Figure 11 A schematic diagram illustrating data return provided in an embodiment of this application; In the diagram: 1. Detection module; 11. Probe rod; 111. Mechanical testing module; 112. Magnetotelluric testing module; 113. Electrical testing module; 114. Acoustic testing module; 12. Drive motor; 13. Mounting frame; 14. First clamping driver; 15. Friction wheel; 16. Movable frame; 17. Guide rod; 18. Straightening beam; 2. Electronic telemetry and control cabin; 3. Data return module; 31. First winch; 32. Satellite beacon; 321. Transmission source; 322. Beacon float; 323. Propeller blade shell; 324. Propeller; 33. Traction cable; 34. Beacon support; 35. Guide cable pulley; 4. Traction module; 41. Float; 42. Traction rope; 5. Base; 51. Penetration hole; 61. Power generation mechanism; 62. Cable; 63. Second winch; 631. Base plate; 632. Vertical plate; 633. Slip ring; 634. Accelerator roller; 6351. Force transmission gear ring; 6352. Counterweight gear ring; 636. Planetary gear; 637. Idler wheel; 638. Counterweight block; 639. Fixed shaft; 64. Battery compartment; 7. Charging transmission module. Detailed Implementation

[0022] The embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the embodiments described below with reference to the accompanying drawings are exemplary descriptions for explaining the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions of the embodiments of this application.

[0023] Those skilled in the art will understand that, unless specifically stated otherwise, the singular forms “a,” “an,” “the,” and “the” used herein may also include the plural forms. It should be further understood that the terms “comprising” and “including” as used in embodiments of this application mean that the corresponding feature can be implemented as the presented feature, information, data, step, operation, element, and / or component, but do not exclude implementation as other features, information, data, step, operation, element, component, and / or combinations thereof supported by the art. It should be understood that when we say that an element is “connected” or “coupled” to another element, the one element can be directly connected or coupled to the other element, or it can mean that the one element and the other element establish a connection relationship through an intermediate element. Furthermore, “connected” or “coupled” as used herein can include wireless connection or wireless coupling. The term “and / or” as used herein indicates at least one of the items defined by the term; for example, “A and / or B” indicates implementation as “A,” or implementation as “A,” or implementation as “A and B.”

[0024] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0025] The technical solutions of this application and their effects are described below through several exemplary embodiments. It should be noted that the following embodiments can be referenced, borrowed from, or combined with each other. Identical terms, similar features, and similar implementation steps in different embodiments will not be repeated.

[0026] The seabed in-situ testing mooring system for repeatable operations provided in this application aims to solve at least one technical problem existing in the prior art.

[0027] Optionally, such as Figures 1-11 As shown, the seabed in-situ testing mooring system of this application, which can perform repeated operations, includes: a base 5, which is used to couple with the seabed surface, and the area of ​​the base 5 corresponds to the pressure of the seabed in-situ testing mooring system and the pressure bearing capacity of the seabed surface; and a detection module 1, which is fixed on the upper side of the base 5. The detection module 1 includes a penetration unit and a probe 11 equipped with a sensor. The detection module 1 is used to drive the probe 11 to penetrate or pull out of the seabed surface using the penetration unit to repeatedly perform in-situ testing of the original strata. This solves the problem in existing in-situ testing where sensors need to be buried in the strata for a long time, which interferes with the movement and changes of the strata and makes it impossible to accurately reflect the movement properties of the strata in long-term monitoring data.

[0028] Optionally, the shape of the base 5 can correspond to the underwater surface to be tested, and the in-situ test mooring system can be set up on the seabed, lake bottom, and other underwater areas. The area of ​​the base 5 can be determined based on the mooring system's own weight, the buoyancy of the water, and the geological information of the underwater surface (such as its compressive strength).

[0029] In one embodiment, the base 5 can be rectangular in shape, and is positioned on the seabed with its bottom in contact with the seabed surface. The base 5 has a sufficiently large area to provide adequate support, thereby ensuring that the system does not experience severe subsidence during long-term operation on the seabed.

[0030] Optionally, the detection module 1 includes a straightening unit with guide rods 17 and a straightening beam 18. The guide rods 17 are arranged on both sides of the penetration unit and fixed at the bottom to the base 5. The two ends of the straightening beam 18 are slidably connected to different guide rods 17. The upper part of the probe rod 11 passes through the straightening beam 18 and is connected to the straightening beam 18.

[0031] Optionally, the straightening unit and the penetration unit are located on the same side of the base 5. The penetration unit can be located at the structural center of the base 5, and the guide rod 17 can be located on the opposite side of the penetration unit.

[0032] Optionally, the middle part of the straightening beam 18 may be provided with a through hole corresponding to the probe rod 11. The probe rod 11 passes through the through hole and is fixed in the through hole. When the penetration unit drives the probe rod 11 to rise and fall, the probe rod 11 and the straightening beam 18 rise and fall synchronously.

[0033] Optionally, the probe rod 11 can also be movable relative to the straightening beam 18. In this case, there can be two or more straightening beams 18, which are spaced apart to restrict the movement of the probe rod 11 in a fixed direction.

[0034] In one embodiment, a penetration unit is installed at the structural center of the base 5, and cylindrical guide rods 17 are erected on both sides of the penetration unit. A straightening beam 18 spans the two guide rods 17 and can slide freely on the guide rods 17 (the straightening beam 18 can rise and fall). At the same time, the center of the straightening beam 18 is mechanically connected to the probe rod 11, so when the probe rod 11 moves, it drives the straightening beam 18 to move synchronously (the straightening beam 18 is used to straighten the probe rod 11 during penetration, making hard contact, maintaining the probe rod 11 vertically, and moving downward with the probe rod 11. At the same time, the straightening beam 18 is located at the top of the probe rod 11, and the buoyancy is greater than that of the lower structure, reducing the structural self-weight borne by the lower structure). Under the action of the straightening beam 18, the probe rod 11 is kept in a vertical state, avoiding structural bending due to the excessive length of the probe rod 11, which can effectively increase the extendable length of the probe rod 11 to achieve deeper penetration operations.

[0035] Optionally, the penetration unit includes a drive motor 12 and a pair of friction wheels 15. The probe 11 passes through and contacts the friction wheels 15. The base 5 has a penetration hole 51 in the area corresponding to the probe 11. The probe 11 is inserted into the underwater ground along the penetration hole 51. The drive motor 12 is connected to the friction wheels 15 to drive the probe 11 to rise and fall. When the drive motor 12 rotates forward, the friction wheels 15 rotate and drive the probe 11 downward through friction, gradually penetrating the underwater stratum. After reaching the preset working depth, the drive motor 12 stops, and the sensor on the probe 11 can collect in-situ test data of the original stratum at the current depth. After the data collection at this depth is completed, the drive motor 12 reverses, and the friction wheels 15 rotate in the opposite direction to lift the probe 11 upward, completing the extraction of the probe 11 from the stratum, and waiting for the next working instruction. By controlling the forward and reverse rotation of the drive motor 12, the penetration depth of the probe 11 can be flexibly adjusted, enabling repeated in-situ testing operations without leaving the sensor in the formation for an extended period.

[0036] Optionally, the friction wheels 15 can be arranged side by side, and there can be two drive motors 12, each drive motor 12 connected to one friction wheel 15. When the drive probe 11 is raised and lowered, the two drive motors 12 drive the friction wheels 15 to rotate synchronously. The penetration unit can be located below the straightening beam 18 and opposite to the penetration hole 51.

[0037] Optionally, to achieve lateral movement of the probe 11, the detection module 1 further includes a movable frame 16, a mounting frame 13, a first clamping driver 14, and a second clamping driver. The mounting frame 13 is fixed on the base 5, and the movable frame 16 is movably fixed on the upper part of the mounting frame 13. The friction wheel 15 is mounted on the movable frame 16. The first clamping driver 14 and the second clamping driver are located on the mounting frame 13. The driving end of the first clamping driver 14 is opposite to the movable frame 16 to drive the movable frame 16 to slide. The driving end of the second clamping driver contacts the friction wheel 15 to drive the friction wheel 15 to clamp or release the probe 11. Through the cooperation of the first clamping driver 14 and the second clamping driver, the movable frame 16 can drive the probe 11 to move laterally as a whole. When it is necessary to adjust the penetration point for multi-point testing, it is not necessary to move the entire underwater buoy system. Different test positions can be switched, further improving the flexibility of the test operation and adapting to the needs of multiple repetitive operations.

[0038] Optionally, the size and shape of the penetration hole 51 can correspond to the movement range of the movable frame 16. The bottom of the mounting frame 13 is fixed to both sides of the penetration hole 51. The first clamping actuator 14 can be a clamping push cylinder, and there can be two clamping push cylinders. The two clamping push cylinders are fixed to both sides of the movable frame 16, and the driving ends of the clamping push cylinders are opposite to the movable frame 16. By synchronously pushing and pulling the two clamping push cylinders, the movable frame 16 can be moved laterally as a whole, thereby adjusting the overall position of the friction wheel 15 and the probe rod 11.

[0039] Optionally, the second clamping driver can also be a clamping push cylinder. The two second clamping drivers drive the two friction wheels 15 to move laterally, causing the two friction wheels 15 to move closer to each other to clamp the probe rod 11, or to move away from each other to release the probe rod 11. When it is necessary to move the position of the probe rod 11, the second clamping driver drives the friction wheels 15 to release the probe rod 11. After the first clamping driver 14 drives the movable frame 16 to move to the preset position, the second clamping driver drives the friction wheels 15 to clamp the probe rod 11 again, thus completing the point adjustment operation.

[0040] In one possible implementation, the second clamping actuator can be a clamping cylinder, with the probe 11 passing through the center of the penetration unit. During operation, the probe 11 is clamped by the relative horizontal movement of the friction wheel 15. The friction wheel 15 is mounted on the movable frame 16 and driven to rotate by a drive motor 12 mounted on one side. The movable frame 16 can slide laterally within the mounting frame 13 and is pushed by clamping cylinders on both sides. The clamping cylinders are mounted on the mounting frame 13 and are used to clamp and release the friction wheel 15.

[0041] Optionally, it also includes a charging transmission module 7, which is located at the lower part of the mounting frame 13, through which the probe 11 passes. The charging transmission module 7 is equipped with an induction coil corresponding to the probe 11 to charge the sensor and transmit data. The induction coil can be a wireless induction coil, which can be sleeved on the outside of the probe 11 and corresponds to the position of the sensor on the probe 11. The in-situ test data collected by the sensor can be wirelessly transmitted to the charging transmission module 7 through the induction coil, thus eliminating the need to lay wired transmission cables on the outside of the probe 11 and avoiding problems such as cable entanglement and wear during the lifting and lowering of the probe 11. At the same time, the sensor can be wirelessly charged through the induction coil to ensure stable power supply for long-term operation of the sensor.

[0042] In one possible implementation, the charging transmission module 7 may also be provided with a positioning clamp, which is coaxially arranged with the penetration hole 51. The probe rod 11 passes through the positioning clamp, and the positioning clamp is used to further restrict the swing of the probe rod 11, maintain the probe rod 11 in a vertical working state, and improve the stability of the penetration operation.

[0043] Optionally, the system also includes a data return module 3 and an electronic control cabin 2. The data return module 3 and the electronic control cabin 2 are fixed on the base 5. The electronic control cabin 2 is connected to the data return module 3, the charging transmission module 7, and the detection module 1 respectively to control the operation of the seabed in-situ testing mooring system. The data return module 3 is used to receive the data to be transmitted from the electronic control cabin 2 and to remotely return the data to be transmitted.

[0044] Optionally, the electronic control cabin 2 can be installed on one side of the penetration unit (or on the side of the mounting frame 13 where the drive motor 12 is located). The electronic control cabin 2 enables automated penetration control, data acquisition, power management, and data feedback. A data feedback module 3 is installed in the corner of the base 5. This module allows data to be sent when the system needs to transmit data. The electronic control cabin 2 can also receive control commands from external objects through the data feedback module 3, and control the system based on these commands.

[0045] Optionally, the electronic measurement and control cabin 2 may be equipped with a controller for managing the system. The controller controls the system to work according to preset instructions or received instructions, and can acquire data detected by the sensors on the probe rod 11, process it, and send the processed data to the data feedback module 3, which then transmits the data back.

[0046] Optionally, the data return module 3 includes a first winch 31, a traction cable 33, and a satellite beacon 32. One end of the traction cable 33 is fixed to the satellite beacon 32, and the other end is wound around the first winch 31 and electrically connected to the electronic control cabin 2. The first winch 31 is fixed to the base 5. The satellite beacon 32 is equipped with a communication circuit for wireless communication with the satellite, and the buoyancy of the satellite beacon 32 at the bottom of the water is greater than the weight of the satellite beacon 32. The first winch 31 is used to retrieve and deploy the satellite beacon 32 using the traction cable 33.

[0047] Optionally, the data feedback module 3 and the electronic measurement and control cabin 2 can be set on the same side of the mounting frame 13. In order to avoid affecting the movement of the probe 11, the data feedback module 3 can be set at the corner of the base 5.

[0048] In one embodiment, the first winch 31 may be equipped with a power mechanism (such as a motor) and a brake. The power mechanism drives the rotating mechanism (such as a drum) on the first winch 31 to rotate, and the brake prevents the first winch 31 from retracting or extending the cable, thereby enabling the retraction or extension of the traction cable 33. During data transmission, the first winch 31 releases the brake to freely release the satellite beacon 32. The satellite beacon 32, with its own buoyancy, automatically detaches from the beacon holder and floats to the sea surface. Once the satellite beacon 32 floats to the sea surface, it transmits data via satellite communication, completing long-distance data transmission. After data transmission is complete, the first winch 31 starts up and is retracted back into the beacon holder 34, ready for the next data transmission request.

[0049] Optionally, the data return module 3 may also include a beacon bracket 34 and a cable guide pulley 35. The bottom of the beacon bracket 34 is fixed to the base 5, and the top is used to place the satellite beacon 32. The cable guide pulley 35 is fixed to the beacon bracket 34 and can rotate relative to the beacon bracket 34. The traction cable 33 extends along the cable guide pulley 35 to the satellite beacon 32 and connects to the bottom of the satellite beacon 32. The cable guide pulley 35 adjusts the routing direction of the traction cable 33 to prevent the traction cable 33 from rubbing against other structures during deployment and retraction, reduce cable wear, and ensure smooth traction.

[0050] Optionally, the satellite beacon 32 may further include a beacon float 322 and a transmitter 321 (such as an antenna). The transmitter 321 may be located on top of the beacon float 322, and a communication circuit is connected to the transmitter 321. Signals are transmitted through the transmitter 321, and a waterless space is formed inside the beacon float 322 to accommodate the transmitter 321 and the communication circuit, thus protecting both and ensuring their normal operation. The data return module 3 can remotely return data after one or more automatic operations using the probe 11.

[0051] Optionally, a blade housing 323 and a longitudinally mounted propeller 324 may be provided in the middle of the beacon float 322. The propeller 324 is disposed within the space enclosed by the blade housing 323 and fixed inside the beacon float 322. A power generation circuit connected to the propeller 324 may also be provided inside the beacon float 322. The blade housing 323 serves to protect the propeller 324 and provide guidance. The propeller 324 can rotate around the central axis of the beacon under the action of water flow. The blade housing 323 has water inlets and outlets on its upper and lower sides. When the beacon rises or is retrieved, the water flow impacts the propeller 324 through the inlets and outlets. The longitudinally mounted propeller 324 will rotate under the action of water flow to generate electricity, thereby further reducing the system's power consumption and maximizing the system's operational lifespan.

[0052] Optionally, the sensors are arranged along the axial direction of the probe rod 11, and the position and number of the sensors in the probe rod 11, as well as the length of the probe rod 11, correspond to the working depth. The sensors include one or more of the following: mechanical testing module 111, magnetotelluric testing module 112, electrical testing module 113, and acoustic testing module 114.

[0053] In one embodiment, the probe 11 adopts a modular design, capable of combining multiple sensors. A mechanical testing module 111 is installed at its front end, while magnetotelluric, electrical, and acoustic testing modules 114 can be installed at the rear, enabling comprehensive acquisition of multi-type data at different levels, ultimately achieving fusion, comparison, and interpretation. The probe 11 can be continuously extended and freely combined according to the required operating depth. Data collected by the sensors is transmitted via the charging transmission module 7 and connected to the electronic control cabin 2 (not shown) via the cable 62 for temporary storage. The electronic control cabin 2 is then connected to the data feedback module 3, ensuring data and power transmission can meet different operational needs.

[0054] Optionally, the system also includes a traction module 4 equipped with a float 41 and a traction rope 42. One end of the traction rope 42 is connected to the top of the probe rod 11, and the other end is connected to the float 41. The traction module 4 is used to pull the probe rod 11.

[0055] Optionally, the position of the system can be marked by the buoy 41. The buoyancy of the buoy 41 can also be adjusted. When the system experiences a depth failure and the penetration unit is unable to pull the probe 11 out of the strata, the buoyancy of the buoy 41 can be used to forcibly pull the probe 11 out of the seabed, avoiding leaving the probe 11 and sensor on the seabed. This also facilitates the subsequent recovery operation of the entire system and reduces the wear and tear on core components.

[0056] Optionally, the buoyancy of the float 41 can be set according to the total weight of the probe 11 and the maximum resistance between the probe 11 and the formation, to ensure that the buoyancy is sufficient to pull out the probe 11 in case of failure.

[0057] Optionally, the system also includes a power generation module comprising a power generation mechanism 61, a cable 62, a second winch 63, and a battery compartment 64. The power generation mechanism 61 is mounted on the buoy 41. One end of the cable 62 is connected to the power generation mechanism 61, and the other end is wound around the second winch 63. The battery compartment 64 is electrically connected to the cable 62 on the second winch 63 to store electrical energy. The detection module 1 is electrically connected to the battery compartment 64. The second winch 63 is fixed to the base 5. During normal system operation, the power generation mechanism 61 can generate electricity using the kinetic energy or wave energy generated by the flowing seawater. The generated electrical energy is transmitted to the battery compartment 64 for storage via the cable 62, providing power supplementation for the long-term operation of the entire system, extending the system's underwater operating endurance, reducing the system's dependence on its own energy storage battery, eliminating the need for frequent system recovery and battery replacement, and adapting to the needs of long-term, repetitive in-situ operations. When the system needs to be recovered, the second winch 63 can reel in the cable 62 to retrieve the power generation mechanism 61 and the buoy 41, avoiding structural dragging damage during the recovery process.

[0058] In one embodiment, the power generation mechanism 61 can be an ocean current power generation device. The buoy 41 floats at a certain height away from the seabed via a cable 62, thus utilizing a stronger ocean current than that in the seabed area to generate electricity. The buoy 41 can continuously obtain electrical energy using the ocean current under normal conditions. The electricity generated by the buoy 41 is transmitted to the battery compartment 64 via the cable 62, thereby continuously providing the system with the required energy. The system does not need to operate continuously for 24 hours; it is in a low-energy consumption state under normal conditions, and sufficient charging time can be set to ensure a balance between system energy consumption and expenditure.

[0059] Optionally, to prevent cable entanglement, a float 41 can be used to apply a stable tension to the cable 62 and maintain it on a set trajectory. When the probe 11 is inserted and the float 41 is pulled downwards, the cable 62 can be automatically retracted into the second winch 63. When the probe 11 is pulled up and the float 41 rises, the cable 62 needs to be able to be released from the second winch 63 and maintained in a taut state.

[0060] Optionally, the battery compartment 64 may contain one or more high-capacity batteries, which store electrical energy. The battery compartment 64 is also electrically connected to various objects in the system that require electrical energy to supply them with power.

[0061] Optionally, the second winch 63 can be a non-powered winch, which includes a fixed bracket, an accelerating drum 634, and a slip ring 633. The fixed bracket is fixed to the base 5, and the accelerating drum 634 is rotatably fixed to the top of the fixed bracket. The first part of the slip ring 633 is fixedly connected to one side of the accelerating drum 634, and the second part of the slip ring 633 is fixedly connected to the fixed bracket. The first part and the second part are electrically connected, and the battery compartment 64 is electrically connected to the second part. The cable 62 is coiled around the outside of the accelerating drum 634, and the end of the cable 62 is electrically connected to the first part. The cable 62 is wound up and unwound by the rotation of the accelerating drum 634. The second part can be fitted onto the first part.

[0062] In one embodiment, the fixed bracket may include a base plate 631 and an upright plate 632, with the upright plate 632 fixed to both sides of the base plate 631, and the two sides of the acceleration roller 634 rotated and fixed on the upright plate 632.

[0063] Optionally, the accelerating roller 634 internally includes multiple sets of planetary gears 636, a transmission gear ring, and a fixed shaft 639 with an idler gear 637. The planetary gears 636, the transmission gear ring, and the multiple gears form a multi-stage transmission mechanism. The sub-transmission mechanisms of the multi-stage transmission mechanism are connected step by step, and the number of rotations increases progressively. The last sub-transmission mechanism of the multi-stage transmission mechanism is connected to the roller. This multi-stage transmission mechanism is a force-consuming gear set structure, meaning that when the first-stage sub-transmission mechanism of the multi-stage transmission mechanism rotates once, the output end of the last stage will rotate multiple times, thereby realizing the multiple rotations of the roller.

[0064] Optionally, each sub-transmission mechanism includes a transmission gear ring, an idler gear 637, and at least one planetary gear 636. The transmission gear ring is fixed to a fixed shaft 639, the idler gear 637 is fixed to a fixed shaft 639, the middle of the transmission gear ring is recessed to form a transmission groove, the groove wall of the transmission groove meshes with the planetary gear 636, the idler gear 637 is located in the transmission groove and meshes with the side of the planetary gear 636 away from the transmission groove; one end of the planetary gear 636 is rotatably fixed to the transmission gear ring of the next stage sub-transmission mechanism.

[0065] In one embodiment, each sub-transmission mechanism may be provided with two planetary gears 636. Except for the last stage sub-transmission mechanism, the gear shafts of the planetary gears 636 of the other stages of the sub-transmission mechanism are rotatably fixed on the transmission gear ring of the next stage sub-transmission mechanism.

[0066] Optionally, the counterweight 638 is fixed to the side of the transmission gear ring of the first-stage sub-transmission mechanism, and the planetary gear 636 of the last-stage sub-transmission mechanism is connected to the acceleration roller 634, so that the acceleration roller 634 is driven to rotate by the movement of the counterweight 638.

[0067] Optionally, the transmission gear ring can be divided into a counterweight gear ring 6352 and a force transmission gear ring 6351. A mounting block is fixed to the side of the counterweight gear ring 6352 away from the planetary gear 636. The counterweight gear ring 6352 serves as the first ring of the multi-stage transmission mechanism (after the drum rotates, the mounting gear ring rotates, which in turn drives the planetary gear 636). When the float 41 is at its highest position, i.e., when the cable 62 is in its longest traction position, the counterweight block 638 mounted on the counterweight is located on the upper part of the gear ring, thus applying a continuous torque to the planetary gear 636 under the action of gravity. The rotational tendency of the counterweight gear ring 6352 is transmitted to the next stage force transmission gear ring 6351 via the planetary gear 636, and finally to the drum (the planetary gear 636 on the last stage force transmission gear ring 6351 is connected to the drum). The center of the second winch 63 is the idler wheel 637 shaft, which is fixed relative to the fixed support and does not rotate. When the transmission gear ring rotates, it only drives the planetary gear 636 to move around the idler gear 637, and drives the next stage gear ring to rotate. Since the circumference of the gear ring is always greater than the circumference of the idler gear 637, the next stage gear ring can rotate at a multiplied speed for every rotation of the previous stage gear ring, achieving an accelerated rotation effect. Therefore, through multi-stage transmission, the counterweight gear ring 6352 can rotate the roller multiple times with minimal rotation. Driven by the counterweight, the automatic winding and unwinding of the traction cable 33 can be achieved. By controlling the weight of the counterweight, the traction cable 33 is kept taut without pulling on the float 41, and the length change between the traction cable 33 and the float 41 can be accommodated when the float 41 floats up and down.

[0068] In one embodiment, the system's workflow can be as follows: ① The system was deployed on the seabed and began long-term monitoring operations; ② The probe 11 is inserted and data is collected according to the preset time, and then the probe 11 is pulled out and retrieved; ③ After data collection is completed, the beacon rises to the surface and transmits the data back; ④ When the beacon is recovered, the system enters a normal idle state, enters a low-power mode, and automatically recharges; ⑤ The system automatically wakes up periodically to start the operation again, and the process repeats.

[0069] The repeatable seabed in-situ testing mooring system provided in this application has the following advantages: ① It reduces the interference of general methods on stratigraphic changes during long-term monitoring of seabed geology, and allows for repeated in-situ testing of strata in their original state after changes over time, resulting in higher data accuracy. ② The system is self-sufficient in energy and can recharge itself to maintain the energy supply required for long-term operation without the need for external energy supplementation, saving system maintenance consumption and costs, and making it more green and environmentally friendly; ③ It can achieve regular automated data transmission from the seabed environment, eliminating the need for manual data retrieval and saving data retrieval operation costs.

[0070] The terms "first," "second," "third," "fourth," "1," "2," etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in a sequence other than that shown in the illustrations or text descriptions.

[0071] It should be understood that although arrows indicate various operation steps in the flowcharts of this application's embodiments, the order in which these steps are implemented is not limited to the order indicated by the arrows. Unless explicitly stated herein, in some implementation scenarios of this application's embodiments, the implementation steps in each flowchart can be executed in other orders as required. Furthermore, some or all steps in each flowchart, based on the actual implementation scenario, may include multiple sub-steps or multiple stages. Some or all of these sub-steps or stages can be executed at the same time, and each sub-step or stage can also be executed at different times. In scenarios where execution times differ, the execution order of these sub-steps or stages can be flexibly configured according to requirements, and this application's embodiments do not limit this.

[0072] The above description is only an optional implementation method for some implementation scenarios of this application. It should be noted that for those skilled in the art, other similar implementation methods based on the technical concept of this application without departing from the technical concept of this application also fall within the protection scope of the embodiments of this application.

Claims

1. A reusable in-situ seabed testing mooring system, characterized in that, include: A base for coupling with the underwater surface, the area of ​​which corresponds to the pressure of the in-situ test mooring system and the pressure-bearing capacity of the underwater surface. The detection module is fixed to the upper side of the base. The detection module includes a penetration unit and a probe equipped with a sensor. The detection module is used to drive the probe through the penetration unit to penetrate or pull out the underwater ground to repeatedly perform in-situ testing of the original strata.

2. The subsea in situ test node system capable of repeatedly performing a job of claim 1, wherein, The detection module includes a straightening unit with guide rods and a straightening beam. The guide rods are arranged on both sides of the penetration unit and fixed at the bottom to the base. The two ends of the straightening beam are slidably connected to the guide rods. The upper part of the probe is connected to the straightening beam.

3. The subsea in situ test node system capable of repeatedly performing a job of claim 1, wherein, The penetration unit includes a drive motor and a pair of friction wheels. The probe passes through the friction wheels and contacts them. The base has a penetration hole in the area corresponding to the probe. The probe is inserted into the underwater surface along the penetration hole. The drive motor is connected to the friction wheel to drive the probe rod to rise and fall using the friction wheel.

4. The subsea in situ test node system capable of repeatedly performing a job of claim 3, wherein, The detection module also includes a movable frame, a mounting frame, a first clamping driver, and a second clamping driver. The mounting frame is fixed to the base, the movable frame is movably fixed to the upper part of the mounting frame, and the friction wheel is mounted on the movable frame. The first clamping driver and the second clamping driver are disposed on the mounting frame. The driving end of the first clamping driver is opposite to the movable frame to drive the movable frame to slide. The driving end of the second clamping driver contacts the friction wheel to drive the friction wheel to clamp or release the probe.

5. The subsea in situ test node system capable of repeatedly performing a job of claim 4, wherein, It also includes a charging transmission module, which is located at the lower part of the mounting frame, and the probe passes through the charging transmission module; The charging and transmission module is equipped with an induction coil corresponding to the probe to charge the sensor and transmit data.

6. The subsea in situ test node system capable of repeatedly performing a job of claim 5, wherein, It also includes a data return module and an electronic control cabin. The data return module and the electronic control cabin are fixed on the base. The electronic control cabin is connected to the data return module, the charging transmission module, and the detection module respectively to control the operation of the seabed in-situ testing mooring system. The data feedback module is used to receive the data to be transmitted from the electronic measurement and control cabin and to remotely transmit the data to be transmitted.

7. The subsea in situ test node system capable of repeatedly performing a job of claim 6, wherein, The data return module includes a first winch, a traction cable, and a satellite beacon. One end of the traction cable is fixed to the satellite beacon, and the other end is wound around the first winch and electrically connected to the electronic telemetry and control cabin. The first winch is fixed on the base. The satellite beacon is equipped with a communication circuit for wireless communication with a satellite, and the buoyancy experienced by the satellite beacon on the seabed is greater than the weight of the satellite beacon itself. The first winch is used to retrieve and deploy the satellite beacon using the traction cable.

8. The seabed in-situ testing mooring system for repeatable operations according to claim 1, characterized in that, The sensor is arranged along the axial direction of the probe rod, and the position and number of the sensor in the probe rod, as well as the length of the probe rod, correspond to the working depth. The sensor includes one or more of the following: mechanical testing module, magnetotelluric testing module, electrical testing module, and acoustic testing module.

9. The subsea in situ test node system capable of repeatedly performing a job of claim 1, wherein, It also includes a traction module equipped with a float and a traction rope. One end of the traction rope is connected to the top of the probe rod, and the other end is connected to the float. The traction module is used to pull the probe rod.

10. The subsea in situ test node system capable of repeatedly performing a job of claim 9, wherein, It also includes a power generation module equipped with a power generation mechanism, a cable, a second winch, and a battery compartment. The power generation mechanism is located on the float. One end of the cable is connected to the power generation mechanism, and the other end is wound around the second winch. The battery compartment is electrically connected to the cable on the second winch to store electrical energy. The detection module is electrically connected to the battery compartment.

11. The subsea in situ test node system capable of repeatedly performing a job of claim 10, wherein, The second winch includes a fixed bracket, an acceleration drum, and a slip ring. The fixed bracket is fixed to the base, and the acceleration drum is rotatably fixed to the top of the fixed bracket. The first part of the slip ring is fixedly connected to one side of the acceleration roller, the second part of the slip ring is fixedly connected to the fixed bracket, the first part and the second part are electrically connected, and the battery compartment is electrically connected to the second part; The cable is coiled around the outside of the acceleration drum, and the end of the cable is electrically connected to the first part.

12. The subsea in situ test node system capable of repeatedly performing a job of claim 11, wherein, The acceleration roller is equipped with multiple sets of planetary gears, a transmission gear ring, and a fixed shaft with idler gears. The planetary gears, transmission gear ring, and multiple gears form a multi-stage transmission mechanism. The sub-transmission mechanisms of the multi-stage transmission mechanism are connected to each other in a step-by-step manner, and the number of rotations increases step by step. The last sub-transmission mechanism of the multi-stage transmission mechanism is connected to the roller.

13. The subsea in situ test node system capable of repeatedly performing a job of claim 12, wherein, Each of the sub-transmission mechanisms includes a transmission gear ring, an idler gear, and at least one planetary gear. The transmission gear ring is rotatably fixed to the fixed shaft, the idler gear is fixed to the fixed shaft, the middle of the transmission gear ring is recessed to form a transmission groove, the groove wall of the transmission groove is meshed with the planetary gear, and the idler gear is located in the transmission groove and meshes with the side of the planetary gear away from the transmission groove. One end of the planetary gear is rotatably fixed to the transmission gear ring of the next stage sub-transmission mechanism or the acceleration roller, and the first stage sub-transmission mechanism is provided with a counterweight.

14. The subsea in situ test node system capable of repeatedly performing a job of claim 13, wherein, The counterweight is fixed to the side of the transmission gear ring of the first-stage sub-transmission mechanism, and the planetary gear of the last-stage sub-transmission mechanism is connected to the acceleration roller.

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