437 results about "Mooring system" patented technology

According to the deep and far seawater suspension oil and liquid storage device and the underwater oil storage method thereof, a layered tank body structure is adopted, and a load adjusting cabin, a flexible oil storage cabin and a water storage cabin are arranged from top to bottom. The load adjusting cabin is used for dynamically adjusting the net buoyancy of the device through seawater feeding / discharging to reduce the load of the mooring system; the oil storage cabin adopts a flexible storage bag to adapt to volume change and is linked with the water storage cabin through a movable composite heat preservation partition plate, the partition plate comprises an active heating layer and a phase change material layer, when the oil temperature is too low, the active heating layer directionally heats crude oil, the phase change layer absorbs dissipated heat, latent heat is released during external low-temperature impact to buffer temperature drop, and dynamic temperature control is achieved. The device is moored and fixed through a gravity anchor, and multiple types of sensors are arranged to monitor the posture, stress, oil temperature and leakage state of the tank body in real time. The problems of oil storage tank deformation, high pour point oil heat preservation and mooring stability under the deepwater high-pressure environment are solved, and the device has the advantages of being low in construction cost, high in environmental adaptability and efficient in operation and maintenance and is suitable for safe storage and transportation of deep and far sea oil and gas resources.

The invention relates to the technical field of mooring equipment, in particular to a floating platform tension leg mooring system which comprises at least three sets of tension tendons connected with a floating platform, and each tension tendon is composed of a steel cable locking device, a steel cable, a mooring connecting arm and a universal joint base from the upper platform end to the lower anchoring end. The tension tendons are connected with the floating platform through the steel cable locking devices, accurate adjustment of tension is achieved through the tension adjusting locking connectors, the tension consistency of the tension tendons is achieved, the tension adjusting locking connectors can be locked on the steel cable locking devices, and one ends of the tension adjusting locking connectors are directly connected with the steel cables. According to the floating platform tension leg mooring system, through the design of the tension adjusting locking connectors, the tension of each group of tension tendons can be accurately adjusted, and it is ensured that the tension of each group of tension tendons is kept consistent. Therefore, the stability and the reliability of the whole mooring system are improved, and the platform movement deviation caused by uneven tension is reduced.

The invention relates to the field of ocean energy development, and discloses a floating fan anchor chain optimization method and device based on a genetic algorithm and a medium, and the method comprises the steps: obtaining the installation data of a floating fan system; based on the installation data of the floating fan system, a full-coupling numerical model of the mooring system is established by adopting CFD software; a genetic algorithm is adopted to optimize the full-coupling numerical model, and mooring optimization parameters are obtained; the mooring optimization parameters are applied to actual installation of the floating type draught fan system; according to the method, the high-precision full-coupling numerical model is established through the advanced CFD technology, the performance of the floating fan system in the complex marine environment is comprehensively and accurately predicted and evaluated, meanwhile, the mooring system is optimized through the genetic algorithm, the optimal parameter combination is found, the stability and reliability of the system are greatly improved, and the method is suitable for popularization and application. Powerful support is provided for application and development of the floating fan technology under deep sea and severe sea conditions, and remarkable beneficial effects are achieved.

The utility model relates to a mooring system and a wind generating set, the mooring system is used for being connected with a floating foundation, the mooring system comprises a first mooring assembly and a second mooring assembly, the first mooring assembly comprises a first anchor chain and a first counterweight part, the first counterweight part is connected to the first anchor chain, the first anchor chain comprises a first end part and a second end part, and the first end part is used for being connected with the floating foundation; the second mooring assembly comprises a fiber cable and a floating body, the floating body is arranged on the fiber cable, and one end of the fiber cable is connected with the second end of the first anchor chain; the third mooring assembly comprises a traction section and an anchoring part, one end of the traction section is connected with the end, away from the first anchor chain, of the fiber cable, the other end of the traction section is connected with the anchoring part, and the traction section comprises one of a steel wire rope and a second anchor chain. The embodiment of the utility model provides a mooring system and a wind generating set, the mooring system can be suitable for shallow water requirements, and the reliability of the mooring system can be improved.

The invention discloses a novel offshore wind-light-wave energy comprehensive complementary power generation structure system which comprises a vertical axis wind power generation module, a solar photovoltaic power generation module, a point absorption type wave energy power generation module, a floating platform and a mooring system. A point absorption type wave energy power generation device is arranged in the middle of the floating platform, and the mooring system is connected with the floating platform so as to keep the floating platform at the sea position. According to the novel offshore wind-light-wave energy comprehensive complementary power generation structure system, wind energy, solar energy and wave energy can be fully utilized, the cost per kilowatt-hour is effectively reduced, pollution and consumption are avoided, and application and popularization are suggested.

The invention relates to the technical field of numerical simulation ship response, in particular to a ship hydrodynamic response numerical simulation method and system considering the effects of a complex wave field and an automatic mooring system. Firstly, ship radiation potential and hydrodynamic coefficients are obtained based on a three-dimensional potential flow theory and a boundary element method, and wave field information at a berth is obtained in combination with a Boussinesq wave theory; the time domain wave force is solved through the Haskind-Relation theory, and an automatic mooring numerical model integrated with a PD controller is established to calculate the automatic mooring force and torque; and finally, constructing a ship six-degree-of-freedom time domain motion equation based on the data, and solving by adopting a four-order Runge-Kutta method to obtain a time domain response result. The hybrid Boussinesq-Panel technology is adopted, the wave disturbance evaluation accuracy is improved, the blank that existing simulation does not consider an automatic mooring system sufficiently is filled up, arrangement, parameters and control strategies of the automatic mooring device can be flexibly adjusted and secondarily developed, applicability and flexibility are high, and the method is suitable for large-scale popularization and application. And reliable decision support can be provided for procurement and deployment of automatic mooring equipment of a port.

A watercraft mooring system comprising a plurality of interchangeable mooring members for the temporary mooring of one watercraft to another watercraft or one watercraft to a stationary object such as a dock. The interchangeable mooring members comprising connecting rod member embodiments with adjustable lengths and connecting rod members without adjustable lengths, vacuum-handle member embodiments that provide an initial vacuum and a continuous vacuum to one or more vacuum cup assemblies, and a cleat connector member embodiment that is interchangeable with a vacuum-handle member. Embodiments of vacuum-handle member providing up to three points of omni-directional pivot functionality between the present invention and a temporarily moored watercraft.

The invention discloses a constant tension mooring control integrated simulation method and a digital prototype system. The system comprises an integrated simulation model, a three-dimensional visualization system, a QT interaction interface and an AQWA verification model. According to the integrated simulation model, sub-simulation models of ships, constant tension winch control, mooring and environment are constructed and integrated through OpenModelica, a multi-physics field coupled integrated simulation model is established, and integrated simulation of the constant tension mooring control system is achieved; the three-dimensional visualization system builds a three-dimensional virtual model of a ship, a winch, a mooring rope, a wharf and a marine environment based on a Unity 3D virtual engine, and three-dimensional visual dynamic display of a simulation result is realized; the QT interaction interface is combined with visual dynamic presentation, and ship motion, winch state and other parameters and control PID parameters are displayed in real time. According to the invention, joint dynamic analysis and control optimization of the ship mooring system in a complex marine environment are realized.

The invention relates to the field of floating type photovoltaics, and discloses a floating type photovoltaic mooring method and device, and according to the mooring method, an anchoring point, a mooring rope and an adjusting assembly are provided; an anchoring point is arranged at the preset elevation of the bank slope, the first end of a mooring rope is fixedly connected to the anchoring point, and the second end of the mooring rope is connected with the floating photovoltaic module; the tension value F of the mooring rope is monitored in the water level change stage, the tension of the mooring rope is dynamically adjusted through the adjusting assembly, water is automatically injected / drained according to the water level change to maintain the pre-tightening tension F1, and the mooring rope and the floating type photovoltaic assembly are limited. The device can adapt to water level fluctuation, automatic sliding adjustment is achieved through gravity and buoyancy balance by means of the floating body, elastic elements are not needed, and fatigue failure can be avoided; closed-loop adjustment is formed by monitoring tension feedback of the mooring rope, and it is ensured that the mooring system is in the optimal tensioning state all the time. Moreover, a sliding rail or an anchoring point does not need to be arranged on the reservoir wall, the anti-seepage layer is protected, and the reservoir basin anti-seepage structure is prevented from being damaged.

A mooring system for a water surface floating body is arranged on the periphery of the floating body, the overall shape of the plane of the floating body is a polygon, and the number of the edges of the polygon is n1. Comprising main cables, the number of the main cables is n2, n2 is equal to n1, the main cables are arranged corresponding to the edges of a floating body, the multiple main cables are sequentially connected and surround the periphery of the floating body, and the main cables are in the shapes of parabolas recessed towards the direction of the floating body; the anchor chain group is arranged between the main cable and the floating body, the anchor chain group comprises a plurality of anchor chains arranged at intervals, one end of each anchor chain is connected with the outer side of the floating body, the other end of each anchor chain is connected with the main cable, and the anchor chains are symmetrically arranged along the center line of the main cable; and the two adjacent main cables are connected together by means of the buoys. The floating body on the water surface bears the water flow force effect through the anchor chain, the main cable of the mooring system corresponds to the edge of the floating body, the main cable is in a parabola shape, and the main cable can gather the stress of the anchor chain and can surround the periphery of the floating body to protect the floating body.

Disclosed in the present invention is an overall construction process for a floating bridge. The process comprises: procedure I, in which a plurality of floating bridge sections are assembled on a water surface, with each floating bridge section being assembled by welding; procedure II, in which the plurality of floating bridge sections are assembled into a floating bridge body; procedure III, in which a shore connection cable-stayed bridge, a bridge abutment, and a suction anchor of a mooring system are constructed; procedure IV, in which a shore-side end of a floating bridge transition section is connected to a water-side end of the bridge abutment; procedure V, in which one end of the floating bridge body is connected to a water-side end of the floating bridge transition section; procedure VI, in which the other end of the floating bridge body is connected to a water-side end of the shore connection cable-stayed bridge; and procedure VII, in which the floating bridge body is connected to the mooring system. In the procedures IV and V, the cooperation of four winches and four cable piles and the guide of a guide mechanism are used; and in the procedure VI, the cooperation of the four winches and the four cable piles is used. The present invention can effectively ensure smooth and safe transition between two ends of a floating bridge column body and a shore connection structure.

The present invention discloses an offshore floating wind power and photovoltaic centralized mooring system, comprising: a floating wind turbine, a floating wind turbine mooring system, a floating photovoltaic array, and a floating photovoltaic mooring system. The floating wind turbine mooring system includes a mooring cable with one end connected to the floating wind turbine, and the other end of the mooring cable is connected to an anchor point; the floating photovoltaic mooring system includes an upper mooring cable, a lower mooring cable, and a rigid rod. One end of the upper mooring cable is connected to the floating photovoltaic array, the other end of the upper mooring cable is connected to the rigid rod, one end of the lower mooring cable is connected to the rigid rod, and the other end of the lower mooring cable is connected to the anchor point. The present invention also discloses a design method for an offshore floating wind power and photovoltaic centralized mooring system. The present invention reduces the construction difficulty, improves the construction efficiency, enhances the side structure strength of the floating photovoltaic array, and increases the installed capacity of the floating offshore photovoltaic.

The invention relates to the technical field of floating type platform mooring systems, and discloses a self-adaptive mooring cable, a manufacturing method and a self-adaptive mooring method.The self-adaptive mooring cable sequentially comprises a center main bearing layer, a middle protection layer and an outer self-adaptive regulation and control layer from inside to outside. The central main supporting layer is composed of synthetic fiber cables with high tensile strength; the middle protective layer wraps the periphery of the main bearing layer, is formed by weaving fiber materials and is used for preventing external media from invading; the outer-layer self-adaptive regulation and control layer covers the periphery of the protective layer and is woven into a net-shaped structure by shape memory alloy wires; the shape memory alloy woven mesh is configured to be capable of dynamically adjusting the overall rigidity of the mooring cable through thermoelastic martensite phase transformation based on environment temperature changes, and creep deformation of the synthetic fiber cable is slowed down. Through the synergistic effect of the three-layer structure, the structural stability and performance consistency of the mooring cable in long-term use are guaranteed.

The invention relates to the technical field of offshore wind power equipment, and discloses an offshore floating type wind turbine mooring system optimization method based on a proxy model, and the method comprises the following steps: S1, determining key design parameters; s2, sampling to generate design points; s3, establishing a total index function of multi-target coupling; s4, generating a sample database through numerical simulation; s5, constructing an agent model by using a Kriging method; s6, calling the proxy model to search an optimal solution by adopting a differential evolution algorithm; s7, performing numerical simulation verification on the optimal solution and judging convergence; and S8, if not, updating the database and returning to S5 for iteration, and if so, outputting the optimal configuration. According to the method, the problems that a traditional optimization method is high in simulation calculation cost and too long in consumed time are solved, searching is carried out through the proxy model instead of high-precision simulation, the verification iteration step is combined, the optimization efficiency is greatly improved while the result accuracy is guaranteed, and the multi-target mooring scheme with the optimal comprehensive performance can be efficiently obtained.

The invention discloses a full-coupling numerical simulation system and method for a wind and wave hybrid energy obtaining system, and relates to the field of data analysis, and the method comprises the steps: generating an aerodynamic load of a current period based on incoming flow wind speed and coupling dynamics response data of a previous simulation period; based on preset mooring system parameters and the coupling dynamics response data of the previous simulation period, generating a mooring load of the current period; in the random wave field, determining the hydrodynamic force of the floating foundation entity and the wave energy power generation entity, and generating a wave load; determining a PTO force based on the relative motion between the power generation platform and the wave energy power generation entity; and taking the aerodynamic load, the mooring load, the wave load and the PTO force as external force terms in the same time domain kinetic equation for unified solution, and obtaining a coupling kinetic response of the current simulation period. According to the full-coupling numerical simulation system and method for the wind and wave hybrid energy obtaining system, the simulation precision of the simulation system can be improved, and the overall calculation efficiency of the system is improved.

The invention discloses a floating type offshore hydrogen-based energy production platform easy to release and a working method thereof, and relates to the field of offshore new energy development. The production platform comprises a platform body, a floating body foundation, a mooring system, a quick plugging device and a dynamic cable. The mooring system comprises at least one mooring assembly, and the quick plugging device is installed between the platform body and the dynamic cable. An auxiliary propeller is installed on one side wall of the floating body foundation and used for moving and adjusting when the platform is positioned and released. The multiple mooring assemblies are connected with a releasing device through anchor chains to achieve disconnection of anchoring positions, the production platform can be withdrawn out of an anchoring area, and platform damage caused by anchor chain breakage in extreme stormy wave environments such as typhoons is avoided. Electrical connection between the dynamic cable and the offshore wind power plant is cut off through the quick plugging device, and the cable is cut off in a non-destructive manner, so that repeated deployment cost caused by traditional cutting is avoided; after release, the production platform can be repositioned through the tug, anchor chains and cables do not need to be cut and relaid, and operation and maintenance are convenient.

Two types of single shared anchor mooring systems and installation method for station-keeping of floating offshore wind turbines are disclosed. The first type has one anchor on the seabed, a plurality of mooring lines, three-dimensional fairlead devices, and pendent gravity units. Each of the mooring lines runs from a first end attached to the corresponding pendent gravity unit suspended in mid-water vertically upward through the corresponding three-dimensional fairlead device attached to the floater and extends downward to a second end attached to the anchor. The mooring line has a constant tension equal to the submerged weight of the pendent gravity unit. The second type has one anchor on the seabed, one pendent gravity unit suspended in mid-water above the anchor, a plurality of mooring fairleads and interconnected mooring lines. Each of the mooring lines runs upward from a first end connected to the anchor through the mooring fairlead attached to the floater and extends downward to a second end connected to the pendent gravity unit. The mooring systems are secured to the floater at quayside, towed-out with the floater, and installed by lowering the anchor and the pendent gravity units under gravity at the offshore site.

The invention relates to a single-point mooring system, in particular to a design method of a hydraulic locking device of an FPSO single-point mooring system, which comprises the following steps: S1, mounting a guide frame assembly; s2, the sliding shoe assembly is installed in the guide frame assembly; s3, the supporting assembly is assembled; s4, the fixing assembly is installed on the supporting assembly; s5, the locking assembly is installed between the guide frame assembly and the supporting assembly; s6, the supporting assembly is positioned and installed on the deck; s7, tie-back of the buoy from the mouth of the moon pool; s8, releasing the buoy from the mouth of the moon pool; the device has high efficiency, flexibility, stability, safety, strong adaptability, durability, reliability, safety and maintainability, is optimized in structure and easy to operate, and provides an efficient, stable and safe solution for mooring operation in ocean engineering.

The invention discloses a semi-cylindrical shell floating breakwater with a multi-stage energy dissipation and vibration reduction and flexible mooring system, and belongs to the technical field of ocean engineering. The breakwater aims at solving the technical problems that an existing floating breakwater is limited in energy dissipation efficiency under the complex sea condition, the overall motion response is violent, and the stress of an anchoring system is too large. The breakwater comprises a floating body unit which is provided with a semi-cylindrical shell and a floating box, and a plurality of rows of wave dissipation holes are formed in the head wave side of the shell; the energy dissipation and vibration reduction system is arranged below the buoyancy tank and comprises a vertical connecting rod, a horizontal through hole vibration reduction heaving plate, a first vibration reduction damper arranged on a section of the vertical connecting rod and a vertical through hole wave dissipation plate; and the flexible anchoring system comprises an anchor block arranged on the seabed, an anchor chain for connecting the anchor block and the floating box, and a second vibration reduction damper arranged on the anchor chain. The breakwater is mainly used for wave protection and energy dissipation in ports, coast and offshore engineering areas.

The invention provides a multi-chain bidirectional load-bearing suction anchor foundation structure which comprises an annular barrel wall, a barrel top cover plate is arranged at the top of the annular barrel wall, an in-barrel reinforcing structure is arranged in the annular barrel wall, a plurality of anchor eye units are arranged on the outer side of the annular barrel wall, and each anchor eye unit comprises anchor eye structures symmetrically arranged on the annular barrel wall. The anchor eye structure in each anchor eye unit is of a double-anchor-eye structure or a single-anchor-eye structure, and the included angles between the adjacent anchor eye structures on the annular barrel wall are equal. The invention provides a one-anchor multi-chain bidirectionally-loaded shared anchoring foundation, the bearing capacity of the anchoring foundation is effectively exerted, the cost of a mooring system is reduced, and a new choice of the anchoring foundation is provided for floating type wind power.

The present invention is a marine current turbine featuring a downstream rotor, a faired spar, a deckhouse at the waterline, and a ballasting and mooring arrangement to ensure the center of buoyancy is above the center of gravity to provide a stable platform and ample rotor torque reaction. The faired spar minimizes the wake deficit ingested by the rotor and reduces turbulence and drag on the turbine. The deckhouse provides buoyancy to react to gravitational forces and the downward tension component supplied by the mooring system during maximum platform and rotor drag conditions and reserve buoyancy if a portion of the platform becomes flooded. The mooring arrangement preferably forms a bridle to provide yaw stability.

The invention belongs to the technical field of bridge superstructure installation and construction, and particularly relates to a construction device and method for installing a bridge superstructure through a modular barge combined automatic jacking system. Firstly, the operation platform is formed by splicing the modular barges, then the automatic jacking system and the steel platform are installed on the operation platform, the steel platform is used for loading and supporting a to-be-installed beam section on a beam section splicing and transferring wharf, the modular barges are driven by tugs to combine the automatic jacking system and the to-be-installed beam section to move to a designed erection position, and the beam section is assembled and transported. And the to-be-installed beam section is erected on the beam bottom support through the positioning piles and the anchor mooring system, and installation of the bridge superstructure is completed. The method is simple in installation and construction, and can effectively improve the installation and construction effect of the bridge superstructure. In the installation and construction process of the bridge superstructure, the modular barges are connected into a whole through the multiple sets of cross beams, the influences of water flow and waves can be effectively reduced, and the stability of the modular barges is improved. The device is simple in structure, reasonable in design, convenient to use and operate and good in using effect.

The invention discloses a tension-leg-like mooring system suitable for a shallow-water-depth floating structure. The tension-leg-like mooring system comprises an anchor foundation, a mooring cable, a limiting spring and a suspension weight. The anchor foundation is fixed to the seabed and used for resisting horizontal and vertical mooring force. Three stand columns are arranged on the periphery of the floating body, balance weight cabins are arranged in the stand columns, overhanging weights are arranged in the balance weight cabins in the vertical direction in a sliding mode, limiting springs are installed at the top ends and the bottom ends in the balance weight cabins, one end of a mooring rope is connected with the anchor foundation, and the other end of the mooring rope is connected with the overhanging weights. The phenomenon that the mooring tension is sharply increased due to wave frequency motion of the floating body is avoided, and the problem that the catenary mooring platform with the low pretension design deviates too large is solved.

The invention provides a floating photovoltaic split mooring platform, and belongs to the technical field of ocean engineering. The platform mainly comprises at least one floating body, and the floating body is provided with a first floating frame and a second floating frame. Wherein a photovoltaic panel is mounted on the first floating frame; the first floating frame is in sliding connection with the second floating frame, and a damper is arranged between the first floating frame and the second floating frame; and the second floating frame is connected with the berth. The floating body is designed to be of a split type structure, through sliding connection, heaving displacement generated by tide level changes is absorbed by the first floating frame in a self-adaptive mode, the stress state of the second floating frame is not obviously changed, tidal range input is prevented from directly acting on the whole, then forced coupling of the tidal range to the mooring system is weakened, and the mooring effect is improved. The mooring peak tension and the cyclic fatigue risk are obviously reduced; furthermore, the second floating frame can be moored and deloaded through the split design, safety protection is enhanced, and the safety, reliability and applicability of the platform in a large-tidal-range shallow sea area are remarkably improved.

The invention discloses a floating type wind power platform, and relates to the technical field of wind power generation, according to the scheme, the floating type wind power platform comprises a semi-submersible floating type platform, a first mooring system, a concrete block, a second mooring system and a stabilization power generation device, the first power end of the stabilization power generation device is connected with the concrete block through the first mooring system, and the second power end of the stabilization power generation device is connected with the seabed through the second mooring system so as to capture wave energy or tidal energy. Due to the fact that the floating type wind power platform is used, wave energy or tidal energy can be captured and converted into electric energy, the energy utilization approach of the floating type wind power platform is expanded, and energy utilization is more sufficient.

A floating photovoltaic system (1) comprising a flotation unit (100) and a mooring system (30), wherein the flotation unit (100) comprises at least one sail (2) having at least one vertical or near vertical photovoltaic panel (20) mounted on a mast (3) and supported on a base (5), wherein the base (5) further comprises at least one buoyancy element (10); and wherein the mooring system (30) comprises a single point mooring buoy (32) connected to at least one buoyancy element (10) or the base (5) via mooring lines (33), and at least one mooring line (34) from the single point mooring buoy (32) tethered to at least one anchor point (36).

A method of preparing a mooring rope for use in a mooring system for a floating offshore structure. The method comprises laying the mooring rope between a buoy and a seabed anchor; and tensioning the mooring rope between a buoyancy force from the buoy and the seabed anchor, thereby elongating the mooring rope towards a worked length condition. In another aspect, there is provided a method of preparing a mooring system for a floating offshore structure. The mooring system has at least one mooring line between a buoy and a seabed anchor, and the mooring line comprises a mooring rope. The method comprises tensioning the at least one mooring line between a buoyancy force from the buoy and the seabed anchor, thereby elongating the mooring rope towards a worked length condition. Preferred embodiments include tensioning the at least one mooring rope or mooring line between a buoyancy force from the buoy and a tensioning device acting against the buoyancy force. The tensioning device may be a part of the mooring system.

Yoke mooring systems and processes for using same. The system can include a turntable connected to and rotatable with respect to a base. A yoke can be connected to the turntable such that the yoke can at least partially rotate about a longitudinal axis of the yoke and at least partially rotate about a second axis that can be orthogonal to the longitudinal axis. A first and second link arm can be connected to the yoke and to a first component of a first and a second releasable connector, respectively. A first and second lifting line can be connected to the second end of the first and second link arms, respectively. A first and second lifting device can be disposed on a vessel and configured to be connected to a second end of the first and second lifting lines, respectively, to lift and lower the link arms and the yoke.

The invention discloses a shared mooring system. The shared mooring system comprises an array composed of a plurality of floating units. The floating unit comprises a balance weight platform and at least three floating type fan platforms, the at least three floating type fan platforms are evenly distributed in the circumferential direction of the balance weight platform, every two adjacent floating type fan platforms are connected through a first shared cable, and the balance weight platform is connected with the floating type fan platforms through second shared cables. The balance weight platform is located in the space defined by the at least three floating type fan platforms, located in the middle and used for providing traction constraining force for the floating type fan platforms located in the circumferential direction of the balance weight platform, and traction on the sides, facing the space defined by the at least three floating type fan platforms, of the floating type fan platforms is increased. The constraint on the floating type fan platform is increased, the capacity of the floating type fan platform for coping with stormy waves and ocean currents is enhanced, the floating type fan platform can be kept relatively stable under the severe sea condition, and the stability and reliability of the floating type fan platform are enhanced.

A liftable aquaculture net cage (10), comprising a main truss system (11), a net cage system (12) and a mooring system (13). The main truss system (11) comprises a truss (111) and a float tank (112), the float tank (112) and the net cage system (12) both being connected to the truss (111), one end of the mooring system (13) being connected to the truss (111), and the other end thereof being used to connect to an anchor on the seabed; the liftable aquaculture net cage (10) submerges by means of expelling gas from the float tank (112), and the liftable aquaculture net cage (10) surfaces by means of filling the float tank (112) with gas. The raising and lowering of the liftable aquaculture net cage (10) is primarily controlled by means of filling and expelling gas in the float tank (112). By utilizing the raising and lowering function of the liftable aquaculture net cage (10), the entire net cage main body can be submerged by a lifting control system before the arrival of extreme sea conditions, such as typhoons, so as to achieve the purposes of typhoon resistance and hazard avoidance, thereby ensuring the safety of the liftable aquaculture net cage (10).