50 results about "Mooring system" patented technology

This invention relates to a multi-mode communication release-response integrated time-synchronized underwater mooring system and method, and relates to the fields of underwater acoustic communication networks and underwater positioning and navigation technology. The purpose of this invention is to solve the problems of poor reusability of existing underwater mooring systems in complex and diverse application scenarios, the insynchrony of time among mooring nodes making it impossible to coordinate data aggregation or communication reporting tasks at precise times, resulting in single-function underwater mooring equipment, low resource utilization, and large reference time errors. The system includes multiple dual-master control mooring communication units and an external battery compartment, integrating spread spectrum communication, OFDM communication, multiple orthogonal response, atomic clock timekeeping, release control, and positioning functions; it achieves time synchronization and local timekeeping through 1PPS signals and GPRMC information or absolute time information; after deployment, each node completes multi-mode signal reception and response according to a preset mode, and serves as a positioning anchor point to achieve platform positioning through a long baseline positioning algorithm; after the task is completed, it is released and surfaced under control.

The application discloses a kind of single-point mooring chain and anchor chain disc connection damage monitoring and inhibiting device and method, it is related to the inner turret type single-point mooring safety monitoring and protection technical field, the device is set in the tower body structure under the turret of the inner turret type single-point mooring system, including: motion measurement module, contact load measurement module, mooring chain measurement module, collaborative control module and inhibiting drive module, motion measurement module is used to obtain the motion characteristics of turret;Contact load measurement module is used to measure contact interface load and wear amount;Mooring chain measurement module is used to obtain chain body posture and tension;Collaborative control module carries out damage grade determination and instruction output;Inhibiting drive module executes pre-tightening force adjustment, mechanical locking and wear compensation to realize hierarchical inhibition.The application solves the problem of insufficient in-situ monitoring capability of contact interface in the prior art, lack of active inhibition means, realizes in-situ perception, intelligent determination and hierarchical inhibition of intelligent control of the damage of mooring chain and anchor chain disc connection.

A magnetic tethering apparatus includes an end cap. The end cap includes an opening at a first end of the end cap, an outer wall extending from the first end to a second end of the end cap in a first direction, a first mounting surface at the second end of the end cap configured to engage with a second mounting surface, an inner wall extending from the second end of the end cap towards the opening in a second direction, and a base wall surface at the first end extending radially from the inner wall to the outer wall in a third direction transverse to the first direction.

The present application relates to offshore wind power technology field, disclose a kind of floating offshore wind turbine model test mooring system simulation device and method, its device includes multiple mooring parts, each mooring part includes: multiple longitudinal telescopic rod is arranged in rectangular matrix at experimental pool bottom;Multiple transverse telescopic rod is respectively connected in the top of two adjacent longitudinal telescopic rod;Steel plate is horizontally arranged on transverse telescopic rod and is arranged on the magnetic suction chuck of steel plate surface;Anchor chain two ends are respectively connected with the fairlead of floating platform and magnetic suction chuck, and elastic section is provided at the place close to the fairlead of anchor chain;Tension sensor is arranged at the elastic section of anchor chain and the position of the fairlead of floating platform;The device and method can simulate the mooring system arrangement situation of floating offshore wind turbine in towing tank and the model water depth required by experiment, ensure the accurate reproduction of catenary mooring geometric similarity, mass similarity and dynamic similarity, provide technical support for floating offshore wind turbine model test.

This invention relates to the field of marine engineering mooring systems, specifically to an armored, segmented, abrasion-resistant protective sleeve for the bottom section of a mooring cable. The sleeve includes a front armor unit and multiple main armor units. The front armor unit is fitted over the anchoring end of the mooring cable and has an anchoring through-hole corresponding to the anchoring end. Multiple main armor units, hinged end-to-end, are fitted over the mooring cable, with one end hinged to the front armor unit and the other end extending to the bottom section area where the mooring cable touches the bottom. The front armor unit and main armor units, fitted over the bottom section area from the anchoring end to the bottom contact point, provide anchor chain-level abrasion and cut resistance, completely replacing the protective function of traditional anchor chain bottom sections. The hinged design allows the protective sleeve to bend freely with the mooring cable, ensuring the necessary rigid protection for the bottom section while maintaining the overall flexibility of the mooring cable, fully adapting to seabed topographic changes and dynamic loads.

This invention relates to the field of marine environmental information measurement technology, and discloses a concealed deep-sea environmental information acquisition device and its usage method, including a support frame assembly, a main controller assembly, and multiple beacons. The support frame assembly includes two support columns, a fixed disk, a rotary motor compartment, a limiting sleeve, a locking nut, and a support disk. The rotary motor compartment is installed under the fixed disk and has the function of measuring profile data of environmental information. The device has a high degree of structural integration, low cost, and strong concealment during operation, making up for the shortcomings of deep-sea mooring systems in this regard. It adopts underwater wireless power supply and data interaction. In terms of mechanical disengagement, the beacons are only connected to the support frame assembly by a fixing cable. In terms of energy consumption, it only provides a small amount of energy to the device when querying the status, and the device is in a power-off state at other times, while avoiding the consumption of the device's internal battery power during underwater monitoring.

A floating array device for full-depth corrosion test and a method for acquiring full-profile corrosion data thereof, the device comprising a cylindrical central floating body, a single-point mooring system, a circumferential array test cable system and a plurality of standardized test frame units, the cylindrical central floating body being anchored to the seabed by a main mooring cable, a plurality of suspension points being uniformly arranged circumferentially along the side wall of the floating body, each suspension point vertically suspending an independent test main cable, a plurality of standardized test frames being connected in series on the cable at fixed intervals, the bottom being connected to the seabed anchoring foundation through an acoustic release, and a plurality of test cables being capable of synchronously acquiring full-depth profile corrosion data from the sea surface to the seabed. By batch and periodic recovery of a single cable and all the frames thereof, corrosion kinetics data can be continuously acquired in time and space, and the device has the advantages of high integration, continuous data and safe and efficient operation.

The application provides a mooring cable damage evaluation method based on internal friction driving damage expansion, which comprises the following steps: 1) obtaining the basic mechanical properties and geometric parameters of the polyester cable; 2) performing conversion on the polyester cable sub-cable, strand and yarn performance, and calculating the breaking strength, elongation and stiffness curve of the components; 3) discretizing the yarn in the strand into several layers of axis coincident cylindrical shells, and calculating the extrusion force and fiber tension in the adjacent fibers and adjacent cylindrical shells in the cylindrical shells; 4) calculating the tension of each layer of yarn to determine the friction form of the yarn and the friction force between different layers of yarn; 5) calculating the area damage of each layer of cylindrical shell after a single cycle or several cycles of combined calculation according to the friction force between different layers of yarn; 6) calculating the influence of micro-damage on the performance of the yarn and cyclically executing steps 4) to 6) until damage. The application can reveal the damage expansion law and realize the method of component-level real-time evaluation, and provides support for the safety of deep-sea mooring systems.

A mooring line (200) comprising a first section (210) for being in an inverse catenary shape under the seabed (20) when installed is disclosed. The mooring line (200) comprises one or more plates (300) connected to the first section (210) of the mooring line (200), the one or more plates (300) comprise a surface area (310) configured for providing a resisting force in a direction perpendicular to the mooring line (200) for keeping the first section (210) in the inverse catenary shape when axial pulling force is applied to the mooring line. A mooring system for an offshore structure (10) is disclosed. The system comprises an anchor member (100) at least partly embedded in the seabed (20) and the mooring line (200). The mooring line (200) further comprises a second section (220) for being subsea, the mooring line (200) extending from the offshore structure (10) to a part of the anchor member (100) embedded in the seabed (20), wherein the one or more plates (300) are connected under the seabed to the first section (210) of the mooring line (200) and are configured to keep the mooring line (200) in an inverse catenary shape.

The application provides a ship mooring control method and system based on motion analysis, and relates to the technical field of ship mooring control. In view of the technical problems that the existing ship mooring control method mainly depends on position feedback, is easy to cause the single pendulum effect, has the resonance risk, has the response lag and has high energy consumption, the application adopts the fusion monitoring of ship motion state of stereovision and laser radar, constructs the mooring big data covering multiple ship types and multiple environment conditions based on the joint simulation of computational fluid dynamics and ship dynamics, optimizes the parameters of the PID control model with the ship displacement, speed and acceleration as inputs through the genetic algorithm, and finally realizes the closed-loop real-time adjustment of the cable tension relying on the high dynamic winch system. The method improves the control precision and stability of the mooring system, and the robustness and environmental adaptability in the face of complex environment.

The application provides a cofferdam type construction structure of a conical prefabricated caisson foundation and a construction method thereof. The conical prefabricated caisson foundation comprises a conical bottom caisson constructed in a dry dock, and a conical side wall coaxially arranged in a central region and constructed in a wet dock. A water stop connecting member is arranged on the top of the conical bottom caisson and surrounds the periphery of the conical side wall. A cofferdam main body is arranged on the top of the water stop connecting member, and the cofferdam main body comprises a bottom initial section which is installed in the dry dock. By using the construction scheme of sitting on the bottom and increasing the height in the wet dock, the safety risks of overturning, failure of mooring system and damage of facilities during the construction of the traditional floating pouring method in the typhoon period are fundamentally solved, and the stability and safety of the caisson height increasing process are significantly improved. By arranging the cofferdam main body which is installed in stages, the stability of the caisson during the two floating processes of floating to the wet dock and floating to the pier position is ensured, and a whole-process dry operation environment is provided for the caisson sitting on the bottom and increasing the height in the wet dock.

The invention relates to a floating platform (10) for supporting a tower (1) with a wind turbine (2) for harnessing wind energy. The floating platform (10) comprises a floating element (11) and an adaptive mooring system for automatically achieving a substantially vertical alignment of the tower (1) at different wind speeds. The adaptive supporting system comprises a mooring rope (21) coupled to the floating platform (10) and configured for fixing said mooring rope (21) via a ground anchor (50) to the ground (101), a cantilever beam (25) with a proximal end (24) attached to the floating platform (10) and a distal end (26), the mooring rope (21) being coupled to the distal end (26), and a weight (22) coupled to said mooring rope (21) and being positioned below the cantilever beam (25), wherein a variable position of the weight (22) with respect to the cantilever beam (25) supports a compensation of forces from the wind acting on the wind turbine (2) such that the orientation of the tower (1) is substantially vertical.

The application discloses a mooring line composite weight structure, which comprises a mooring line, a weight block main body and a plurality of annular damping plates. The weight block main body is fixedly sleeved on the mooring line, and the plurality of annular damping plates are fixedly arranged on the outer surface of the weight block main body in an axial direction. Each annular damping plate is provided with a plurality of through holes, and the outer edge of each annular damping plate is provided with a flange part. The through holes, the flange parts and the plurality of annular damping plates jointly form a cooperative energy dissipation structure, which is used for generating perforation jet flow, edge separation and multi-stage wake interference when the composite weight structure moves with the mooring line, so as to enhance the hydrodynamic damping. The application can provide a concentrated weight, significantly improve the hydrodynamic damping, suppress the dynamic tension fluctuation of the mooring line, prolong the fatigue life, and is suitable for the mooring system of a floating wind turbine and other marine floating structures.

A seafloor observation network-based subsurface buoy device with real-time power supplying and high-speed data transmitting is provided. The subsurface buoy device includes a seabed base deployed on the seafloor and a vertical mooring system connected to a bottom surface of the seabed base to extend to the sea surface. The seabed base serves as a gravity anchor to enable the subsurface buoy device to be positioned stably at a layout site, and is further used for obtaining power supply of the subsurface buoy device from a junction box of a seafloor observation network. The seabed base also sends the management and control commands from the junction box to the vertical mooring system, and transmits the data collected by the vertical mooring system back to the junction box in real time.

This invention relates to the field of marine renewable energy engineering technology. In order to provide a mooring system with forward-looking capabilities and relatively low energy consumption, this application provides a semi-active restoring mooring device and control method. By monitoring the motion state of the object to be balanced, its displacement in the near future is predicted, and tension is applied to the mooring cable in a specific direction in advance, thereby providing an optimal restoring force with forward-looking capabilities and directional adaptability. Since the mooring cable can be tensioned / released only when needed, and the tensioning actuator uses a hydraulic servo actuator, an electric servo cylinder, or a linear motor actuator, the energy consumption is extremely low, which is more in line with the economic requirements of long-term, unmanned operation of floating wind turbines.

The application relates to the technical field of ship anchor pulling test, in particular to an anchor system simulation test method. The anchor system simulation test method comprises the following steps: anchor system and ship body structure modeling, three-dimensional models of an anchor system and a ship body structure are respectively established according to design drawings of the actual anchor system and the ship body; anchor system and ship body structure assembly modeling, the three-dimensional models of the anchor system and the ship body structure are assembled and positioned to obtain an assembled test three-dimensional model; anchor pulling test simulation parameter inputting, simulation test conditions are inputted, constant speed or constant pulling force is inputted, and anchor pulling motion simulation test is carried out; anchor and anchor lip adhesion state simulation result evaluation, whether the anchor crown and the two anchor jaws of the anchor reliably adhere to the anchor lip is judged according to the simulation test result. The anchor system simulation test method solves the problem that the existing anchor pulling test through a wooden model test is very wasteful in manpower, material resources and time.

The invention provides a separable mooring system for a floating offshore structure. The system can include a buoy including a connector enabling the buoy to be connected and disconnected from the floating structure. The system has a disconnected configuration in which the buoy is not connected to the floating structure and the buoy at least partially supports a dynamic riser conduit above the seabed. The system has a connected configuration in which the buoy is connected to the floating structure; and wherein the system is configured to enable the buoy to be pulled into the connected configuration and the dynamic riser to be pulled into a connected position. Aspects of the invention include associated pull-in sequences, independent through connections of a first dynamic riser conduit and a second dynamic riser conduit, and conductive coupling of the dynamic riser conduit to the floating structure. Further aspects of the invention include associated quick / emergency disconnect systems and methods, use of counterweights in the installation sequence, connection structure and buoy configurations, and rope connections.

The application discloses a self-powered damping adjustable device and a floating offshore wind turbine, and relates to the technical field of ocean renewable energy, wherein the self-powered damping adjustable device comprises a shell, two ends of which are provided with standard connection interfaces for being connected with mooring chains in series; a rotor is rotatably arranged in a water flow channel in the shell; a damping adjusting unit is arranged in the shell and comprises a brake disc, a sealed cavity, a magneto-rheological fluid and an electromagnetic excitation assembly; the brake disc is coaxially connected with the rotor and is at least partially immersed in the sealed cavity filled with the magneto-rheological fluid; the water flow channel and the sealed cavity are isolated from each other; and the electromagnetic excitation assembly is arranged outside the sealed cavity; by adjusting the magnetic field intensity, the damping size can be steplessly, accurately and quickly changed, so that the mooring system is changed from a traditional passive characteristic to an active controllable characteristic.

A mooring system for a floating electric power producing unit such as a wind turbine or a wave energy converter comprises a buoyant element held beneath the surface and a swivel supported by the buoyant element. The swivel comprises a static part that is held against angular movement about an upright axis and a rotating part that is movable angularly relative to the static part about the upright axis. A mooring link extends between the power producing unit and a mooring point supported by the buoyant element. A conductor link extends between the power producing unit and a connector supported by the buoyant element. The mooring point and the conductor link are movable angularly about the upright axis together with the rotating part of the swivel. Angular movement of the mooring link about the upright axis drives corresponding angular movement of the conductor link about the upright axis.

The utility model provides a kind of steel and concrete combined floating wind power platform, including support column assembly and pontoon assembly.Support column assembly is made of structural steel, including main column, cross brace and side column, main column top connects wind turbine generator set, and side column connects mooring system.Pontoon assembly is made of concrete, including main pontoon, connecting pontoon, side pontoon and heave plate, each pontoon is spliced by bolt, and multiple cavity buoyancy structure is formed.The platform has the advantages of high strength of steel structure and low cost, high buoyancy of concrete, modular design facilitates transportation and installation, heave plate effectively suppresses vertical motion, improves stability and economy in deep sea environment.

The application discloses a mooring cable trajectory and configuration capturing method based on inertial measurement data, and relates to the technical field of ocean engineering structure monitoring and dynamic analysis.The technical scheme points of the application are as follows: S1, data preprocessing and coordinate system conversion;S2, construction of the association between the dynamic equation of the mooring system and the dynamic characteristics;S3, dynamic characteristic extraction and trajectory and configuration capturing.The method of the application realizes real-time and high-precision reconstruction of the spatial trajectory and three-dimensional configuration of the mooring cable through dynamic characteristic extraction and mathematical mapping relationship based on measured acceleration and angular velocity data, and is suitable for long-term online monitoring and safety evaluation of the mooring system of a floating ocean platform.

The application discloses a kind of single-point mooring chain and anchor chain disc connection damage monitoring and inhibiting device and method, it is related to the inner turret type single-point mooring safety monitoring and protection technical field, the device is set in the tower body structure under the turret of the inner turret type single-point mooring system, including: motion measurement module, contact load measurement module, mooring chain measurement module, collaborative control module and inhibiting drive module, motion measurement module is used to obtain the motion characteristics of turret;Contact load measurement module is used to measure contact interface load and wear amount;Mooring chain measurement module is used to obtain chain body posture and tension;Collaborative control module carries out damage grade determination and instruction output;Inhibiting drive module executes pre-tightening force adjustment, mechanical locking and wear compensation to realize hierarchical inhibition.The application solves the problem of insufficient in-situ monitoring capability of contact interface in the prior art, lack of active inhibition means, realizes in-situ perception, intelligent determination and hierarchical inhibition of intelligent control of the damage of mooring chain and anchor chain disc connection.

The invention discloses an FPSO mooring system optimization design method, and particularly belongs to the technical field of ocean engineering mooring design. The method comprises the following steps: constructing an initial mooring model; optimization variables are defined, constraint conditions are determined, multiple sets of values of each set of optimization variables are assigned to the initial mooring model, and a multi-objective function is obtained; dynamically analyzing the optimization variables to generate an initial data set; based on the initial data set, establishing a multi-target agent model through an LSTM network; generating a new sample based on the initial data set by adopting an adaptive Latin hypercube sampling method; optimizing by using a genetic algorithm to obtain an optimized solution set; and carrying out real calculation on an optimal solution in the optimal solution set to obtain a simulation result, and judging whether constraint and performance requirements are met or not. According to the method, the problems of high cost and low efficiency of mooring design under complex sea conditions are solved, experience driving of the mooring scheme is changed into intelligent algorithm driving, and reliable technical guarantee is provided for large-scale deployment of the floating platform.

This application provides a hydrodynamic analysis method and apparatus for offshore photovoltaic platforms. The method acquires synchronous data streams from a multi-source sensor network deployed on the platform. These synchronous data streams contain multi-dimensional monitoring data reflecting the platform's operational status, including performance data reflecting the platform's energy capture performance, environmental data reflecting the platform's environmental conditions, and hydrodynamic data reflecting the platform's structure and the mechanical response of the mooring system. A data fusion model is used to perform cross-domain correlation analysis on the multi-dimensional monitoring data, establishing dynamic correlations between performance data, environmental data, and hydrodynamic data. Based on these dynamic correlations, assessment information for evaluating the platform's overall operational status is generated. This method significantly improves the accuracy of hydrodynamic performance prediction for offshore photovoltaic platforms through nonlinear time-domain analysis involving multi-load coupling and dynamic wetted surface adaptation.

The application discloses an unmanned aerial vehicle automatic mooring system for an unmanned ship, which comprises an unmanned ship, a constant-tension mooring winch arranged on the unmanned ship, a mooring unmanned aerial vehicle and a mooring sleeve. The mooring unmanned aerial vehicle comprises an unmanned aerial vehicle body and a grabber arranged at the bottom of the unmanned aerial vehicle body, and the mooring sleeve comprises a mooring sleeve frame and a connecting component arranged on the mooring sleeve frame. The mooring sleeve frame is provided with a sleeve hole for sleeving a cable pile column. The unmanned aerial vehicle body can realize the grabbing and separating processes by controlling the relative distance between the grabber and the mooring sleeve. The whole process is a mechanical process, and the process is reliable and safe.

The present application relates to offshore wind power technology field, provide a kind of floating tension leg wind power platform and its installation method.The platform includes tension leg type float and be arranged on the tension balance mechanism of float lower beam, tension balance mechanism is hinged with float lower beam by hinged shaft, and its both ends are provided with mooring pedestal for connecting mooring piece;Rotary disc is provided on tension balance mechanism, and float connection hole matched with it is provided on float lower beam, after rotating adjustment to preset position of tension balance mechanism, locking and fixing are realized by connecting piece.In installation process, mooring piece is made tension by the floating of float, drives tension balance mechanism to rotate around hinged shaft, thereby automatically adjusting the tension of each mooring piece to balanced state, and accurate alignment and locking are realized in combination with brake device and length adjustment component.The present application can effectively eliminate the initial installation error of mooring system, optimize stress distribution, reduce the risk of mooring chain fatigue fracture, improve the safety and reliability of platform operation.

The application discloses an anchor chain system storage and transportation and laying ship and a working method thereof. The anchor chain system storage and transportation and laying ship comprises a ship body, a hoisting system and a laying device. The ship body is a double-hull ship body, comprising a piece body and a middle connecting structure. An anchor chain storage and transportation unit is arranged in the middle connecting structure, and an anchor head storage and transportation unit is arranged at the piece body. The two units are arranged in different zones, and an adjustable separation structure is arranged in the anchor chain storage and transportation unit. A connecting working area is arranged on the ship body, a chain outlet mechanism is arranged between the anchor chain storage and transportation unit and the connecting working area, and the hoisting system covers the anchor head storage and transportation unit, a chain outlet position, the connecting working area and the laying device. The anchor chain and the anchor head can be stored and transported in different zones, deck mixed storage and working interference are reduced, and the chain storage adaptability and the continuous laying efficiency of a single ship are improved.

This invention provides a gravity-based multi-tension-leg floating wind turbine platform, comprising: a wind turbine and its tower, a buoyancy chamber, a tensioning mooring system, and a gravity foundation. The wind turbine and its tower are mounted on top of the buoyancy chamber; the buoyancy chamber is connected to the gravity foundation arranged on the seabed via the tensioning mooring system to form a tension leg restraint system. The tensioning mooring system, by significantly increasing the number and rationally distributing the cables, distributes the platform's tension under the influence of wind, waves, and currents among more tensioning components, thereby reducing the tensile force and fatigue load requirements of a single tensioning mooring member and its end connecting components, and reducing the engineering implementation difficulty caused by excessive stress on the tension legs. The gravity foundation is fixed to the seabed by its own weight, eliminating the need for piling operations required for traditional tension-leg platforms, significantly reducing the difficulty and cost of offshore construction.

The application provides a suspension tunnel vortex-induced vibration experimental device based on perception and feedback control, a suspension tunnel rigid segmented model is connected with a streamwise actuation system, the streamwise actuation system is connected with a cross-flow actuation system, and a force feedback control system controls the streamwise actuation system and the cross-flow actuation system; the suspension tunnel rigid segmented model comprises two pipe column models and two flow baffles, and the two pipe column models are arranged side by side at intervals; the pipe column model comprises a suspension tunnel model hydrodynamic shell, an internal square column and two force measurement modules; the suspension tunnel model hydrodynamic shell is sleeved on the outside of the internal square column in a concentric shaft mode; the two force measurement modules are arranged at two ends of the internal square column and located at two ends of the suspension tunnel model hydrodynamic shell. The application realizes two-degree-of-freedom coupling motion of the suspension tunnel vortex-induced vibration in the cross-flow direction and the streamwise direction under high Reynolds number, and can accurately simulate the stiffness characteristics of the suspension tunnel mooring system.