70results about "Vessel movement reduction by wave damping" patented technology

Platform for drilling after or production of hydrocarbons at sea, consisting of a semi-submersible platform body which supports drilling and/or production equipment on its upper surface. The platform body is designed as a vertical mainly flat bottomed cylinder which is provided with at least one peripheral circular cut-out in the lower section of the cylinder since the centre of buoyancy for the submerged section of the platform is positioned lower than the centre of gravity of the platform.

The hurricane prevention system and method for use in ocean water is provided including a buoyant platform on which is disposed a wind-driven power source, a water-moving system, and a water-dispersing system. The wind-driven power source is configured to use wind energy to power the water-moving system, which is configured to transport water from somewhat deeper ocean water levels to, or near, the level of the ocean. The water-dispersing system is preferably configured to disperse the water from the water-moving system to an area at or near the sea surface. The buoyant platform preferably is anchored by a mooring system. The hurricane prevention system and method is designed to bring cooler water from deeper in the ocean to or near the ocean surface and to disperse that cooler water in that area to reduce the sea surface temperature, thereby preventing or inhibiting the formation of hurricanes.

The invention relates to a mooring device that is suitable for use in water. The mooring device includes a pile configured to be embedded in a floor supporting the body of water, at least one arm configured to engage at least one entity; a joint configured to couple the pile and the at least one arm and permit rotation of the at least one arm relative to the pile, and joint locking means configured to lock the joint. The invention may further relate to a method of mounting the mooring device in water, a mooring system including multiple mooring devices and a system including the mooring devices.

An ocean thermal energy conversion assembly includes a ship having support tubes connected between a lower part and a top deck of the ship so as to define an open space. A passage is defined through the lower part and an annular connector is connected to a lower end of the passage. A plurality of rods extend from a top of the annular connector and are pivotably connected to the annular connection portion. A transmission pipe is connected to an underside of the annular connector. A hollow damper is connected to an outer periphery of the annular connector and an outer periphery of the hollow damper is engaged with an inner periphery of a bottom opening in a lower end of the passage. A top cover seals a top opening of the passage and has a wave-elimination way which communicates with holes in the top cover.

The invention discloses an automatic navigation control system improving the seakeeping performance of a ship. The automatic navigation control system can improve the rolling characteristic, the pitching characteristic and the heaving characteristic. A control unit controls the pitching angle of the ship through the differential mode motion between an inverted-T-shaped hydrofoil of the bow and double wave suppression plates of the stern, controls the rolling angle of the ship through the differential mode motion between the double wave suppression plates of the stern, and controls whole heaving of the ship through the common mode motion between the inverted-T-shaped hydrofoil of the bow and the double wave suppression plates.

Described here are compositions, methods and apparatus for biological and physical geoengineering. Disclosed are inorganic particles, prill, pucks, or floats for dispersal on a body of water. These compositions are found to A) increase yields for pelagic aquaculture, B) increase carbon sequestration, and C) provide immediate relief from global warming by directly increasing surface albedo, reducing sea surface temperatures, and indirectly by increasing cloud nucleation activity. A vertical spar buoy or spar buoy network is provided. The buoys or array of buoys are designed to resist wave motion while supporting an analytical platform below the 100-Year Horizon. Sedimentary deadfall through the 100-Year Horizon is measured and flux of fixed carbon is reported and validated. Issuance of validated carbon sequestration certificates and monetization and trading of those certificates are also described.

Disclosed is a variable parameter comprehensive stabilizing controller based on energy optimization. The variable parameter comprehensive stabilizing controller based on the energy optimization not only is low in energy consumption, but also can achieve good shake reduction ability. The variable parameter comprehensive stabilizing controller based on the energy optimization includes: firstly, analyzing a ship and shake reduction fin system mathematical model and a ship-passive shake reduction water cabin system mathematical model to build a stabilizing fin-passive stabilizing water cabin comprehensive stabilizing system mathematical model; secondly, analyzing interaction of a stabilizing fin and a passive stabilizing water cabin; furthermore, building a secondary performance index, using a genetic algorithm to optimize parameters, and designing a variable parameter PID (proportion integration differentiation) controller based on the energy optimization; finally, simulating concrete experiment ship control, and comparing the concrete experiment ship control with traditional PID control.

A combined type wind-wave-resistant ship comprises a hull and is characterized in that a deck of the hull extends towards two sides; a plurality of support bodies are arranged under the parts, extending towards the two sides, of the deck and are all provided with support points; and buoys are in coupling connection to all the support points. The deck extends towards the two sides, so that the width of the deck is increased. The multiple support bodies are arranged under the deck and are all provided with the support points, the buoys are in coupling connection to all the support points, in this way, the parts, extending towards the two sides, of the deck are supported, and the transverse stability of the hull is improved. Transverse connection rods are arranged between the hull and the support points, and thus the transverse firmness of the support bodies is enhanced. Through the design, wind-wave resistance of the hull is improved, meanwhile, the structure is relatively simple, the manufacturing cost is low, most domestic shipyards can produce the combined type wind-wave-resistant ship, the technical requirements and site requirements of manufacturing are lowered greatly, and the manufacturing cost is lowered more.

The invention discloses an ocean engineering operating platform and an operating method. The ocean engineering operating platform comprises a bottom floating body. The top of the bottom floating bodyis fixedly connected with a plurality of middle upright columns. The top ends of the middle upright columns are fixedly connected with a platform body. The outer side of the platform body is fixedly connected with a buffering ball. The top of the buffering ball is hinged with a wave avoidance plate, and the bottom of the buffering ball is fixedly connected with a flow splitting plate. The outer side of the platform body is provided with a fixing block. The ocean engineering operating platform is capable of, through installing the buffering ball and a honeycomb structure, weakening an acting force of ocean waves to the platform body, effectively intercepting seawater through the wave avoidance plate, pushing a sliding rod to be slid in a sliding hole after the wave avoidance plate is impacted, pressing a compression spring, and achieving the damping effect, after the wave avoidance plate is beaten by the ocean waves, enabling the seawater to be fallen to the flow splitting plate and falling from sieve holes, reducing the acting force of the ocean waves, returning the wave avoidance plate in position under the action of a compression spring resilience force and a tension spring and working continuously, preventing a foreign matter from impacting the middle upright columns through a protecting net, guaranteeing stabilization of the ocean platform, and reducing loss of the ocean platform.

A floating platform is provided. The floating platform includes a top surface (14), a plurality of buoyancy members (12) interconnected to the top surface and extending downwardly into a body of water, a bottom plate (16) and a plurality of interstitial volumes (24) that are sealed at a bottom end by the bottom plate to prevent the flow of water into the interstitial volume.

The invention discloses a wave-resistant yacht. The wave-resistant yacht comprises a yacht body, a propeller, an engine, a balance adjusting plate and at least two wave-resistant plates, wherein the engine is arranged on the yacht body and connected with the propeller; the propeller is mounted above a rudder; the balance adjusting plate is arranged below the rudder; the wave-resistant plates are arranged on the two sides of the yacht body through supporting rods; the upper ends of the supporting rods are connected to boards on the two sides of the yacht body; and the wave-resistant plates are supported under the bottom of the yacht body through the lower ends of the supporting rods. According to the wave-resistant yacht, the wave-resistant plates sunk below the bottom of the yacht body are connected to the boards on the two sides of the yacht body, and when meeting wind waves, the yacht is supported on the waves as the yacht runs with a high speed and water current is pushed by the wave-resistant plates without interruption to generate an upward buoyancy force, so that the impact force of the waves on the yacht in the driving process can be reduced, even the yacht is not affected by the waves, and further, that the yacht can run stably without vibration.

The invention relates to an active wave compensation device applied to inland waterway measurement, which is characterized in that the device comprises a mounting base assembly, a linear module, a lifting motor, an adapting base assembly, a turntable assembly, a turntable assembly, a rocking motor, a limit switch, a fixing sleeve, a mounting rod and a posture gauge. The invention measures the motion parameters of the ship hull swing and heave and converts them into digital signals, transmits them to the control system for processing, calculates the compensation amount of the swing and heave through the inverse solution operation, drives the servo motor and the linear module to move by the processed signals, and realizes the compensation of the swing and heave direction of the compensationplatform. The two compensating units transmit power by means of transmission, which can compensate the sounder affected by swing and heave motion accurately and quickly, so that the sounder can safelyand efficiently execute the detection task under complex sea conditions. The invention has the characteristics of wide compensation range, high reliability, accuracy and rapidity, simple and portablestructure, etc.

The invention provides a semi-submersible floating type wind turbine foundation structure which comprises an offshore wind power generation assembly and a floating assembly. The floating assembly comprises a center buoy and foundation buoys, the floating assembly further comprises anti-wave flat plates arranged on the center buoy and the foundation buoys, and through holes are formed in the anti-wave flat plates. According to the semi-submersible floating type wind turbine foundation structure, the anti-wave flat plates are arranged on the center buoy and the foundation buoys, the anti-wave flat plates can break waves and absorb energy, scouring of sea waves to the floating assembly is weakened, impact energy in the waves is consumed, impact force of the sea waves to a tower column is weakened, and fatigue damage to the tower column is reduced. Motion response of the offshore wind power generation assembly under the coupling action of wind, waves and flow can be greatly reduced, the stability of the offshore wind power generation assembly is enhanced, fatigue damage caused by sea wave scouring to the center buoy and the foundation buoys of the offshore wind power generation assembly is reduced, and the service life of a whole offshore wind turbine is prolonged.

The invention discloses a wind-wave-proof unmanned aerial vehicle overwater parking apron. The wind-wave-proof unmanned aerial vehicle overwater parking apron comprises a parking part, a supporting part and a damping part; the parking part comprises a parking body and a box body; the supporting part is connected to the bottom of the parking part, the supporting part is provided with a first counter-weight piece, and the first counter-weight piece is used for stabilizing the parking part in the vertical direction; the damping part comprises at least three damping bodies and second counter-weight pieces connected to the damping bodies through connecting rods, each damping body comprises a frame and a damping piece in the frame, and the frames can be pervious to water and can keep the dampingpieces in the frame. The wind-wave-proof unmanned aerial vehicle overwater parking apron has the advantages that it can be ensured that parking and running of an unmanned aerial vehicle are stable and safe, and the damage of river waves on the unmanned aerial vehicle is effectively avoided.