60results about "Vessel movement reduction by jets/propellers" patented technology

The invention relates to a method of reducing oscillations in an offshore wind turbine comprising one or more thrusters, the method comprising determining an oscillation of the offshore wind turbine and operating the one or more thrusters such that the oscillation is reduced. The invention further relates to an offshore wind turbine comprising one or more underwater thrusters, oscillation determination system for determining an oscillation of the wind turbine and a control system for operating the underwater thrusters in response to signals received from the oscillation determination system.

The invention provides various aircraft carriers, warships, submarines and offshore platforms with efficient load-eliminating swing-stopping capsizing-resisting correction devices. Load-eliminating self-balancing swing-reducing devices, load-eliminating floating air bag cushion devices, externally-suspended weight-adjustable balancer devices, correction plate and wing-type swing-reducing plate devices, devices for accelerating floating and diving of the submarines, self-balancing control devices for accelerating underwater hovering, devices for horizontally pushing whole ship hulls to quickly shift to arrive at or depart harbors, safe quick-decelerating and quick-lagging electric propeller devices and top magnetic-field inertia moving weight balancer devices are provided. The aircraft carriers, the warships, the submarines and the offshore platforms have the advantages that according to the structures, swings, in six degrees of freedom, of ships, the warships, the aircraft carriers and the offshore platforms can be solved comprehensively, sailing ship hulls are timely and safely protected from sudden obstacles, perfect and efficient swing-reducing systems are formed, several major problems in the field of navigation ships are solved, balance stability and safety of aircrafts and spacecraft in the field of the ships, the aircraft carriers, the submarines or aerospace are improved, capability and confidence of human beings in control of offshore or aerial activities are greatly improved, swing reduction is changed into swing stop, and the aircrafts never lose their balance and fall down.

The invention provides a crane ship balance system and a working method thereof. The crane ship balance system comprises a ship body, balance water grooves, tuning balance water tanks, lift fans, self-balance cranes and a PLC control system; the balance water grooves are formed in ship rails of the two sides of the ship body, the tuning balance water tanks are arranged at the head part and the tail part of the interior of the ship body and comprise main water tank bodies and subsidiary water tank bodies, and the lift fans are arranged on decks around the ship body respectively; two crane tracks are arranged on the decks and provided with the self-balance cranes, and balancing arms of the self-balance cranes are provided with fixed weight balance blocks and variable weight balance water tank devices. According to the crane ship balance system and the working method thereof, gravity and buoyancy of the balance water grooves, the gravity of the tuning balance water tanks and balance moment which is provided by the lift fans for the ship body are utilized, the cranes can automatically adjust the balance force when conduct craning for carrying goods, the whole system is connected to thePLC control system to be automatically controlled, and the requirement for machining and manufacturing novel ships is met.

A marine vessel is disclosed having a control system for automatically controlling thrusters for steering the marine vessel for the purpose of aiding an angler who has hooked a fish. The control system will automatically control the thrusters based on the positions of the propulsion unit control levers if the control levers are split. The control system may also control the thrusters if the propulsion unit control levers have moved past a predetermined threshold. The predetermined threshold can be set by the operator of the marine vessel.

A portable-suitcase-type self-alignment water entertainment boat mainly comprises a balance storage box, a water spraying pump push device, an inflation/deflation device, a waterproof electric controldevice and an elastic inflation module assembly. The water spraying pump push device, the inflation/deflation device and the waterproof electric control device are mounted in the balance storage box;the elastic inflation module assembly is connected with the periphery of the balance storage box; the inflation/deflation device communicates with the elastic inflation module assembly through a gaspipeline; and the waterproof electric control device is electrically connected with the water spraying pump push device and the inflation/deflation device. When the inflation/deflation device inflatesthe elastic inflation module assembly, the entertainment boat forms a pot-shaped or a shallow-basin-shaped hull with the balance storage box as the bottom and the elastic inflation module assembly asa boat floating body; and when the inflation/deflation device deflates the elastic inflation module assembly, the elastic inflation module assembly is stored in the balance storage box, and the entertainment boat forms a portable suitcase. The portable-suitcase-type self-alignment water entertainment boat is good in stability, convenient to carry, capable of achieving self-alignment to prevent overturning, and capable of achieving standing, sitting and lying, and is suitable for water fishing.

A method of stabilizing a riser includes applying an oscillating force to the riser, using one or more thrust units on the rise, so as to counteract oscillating movement of the rise, preferably having a first component oscillating at a period between 3 and 20 seconds and a second component oscillating at a period between 1 and 5 minutes, where the thrust units may be positioned at antinodes of the oscillating movement and preferably each comprise three pairs of thrusters respectively configured to provide thrust in three evenly spaced directions.

The invention provides a multifunctional lifting ship balance system and a working method thereof. The system comprises a ship body, balance water channels, a tuning balance water tank, lift fans, a self-balance crane, dual-water-spraying balance devices and a PLC system; the balance water channels are arranged at ship boards at the two sides of the ship body, the tuning balance water tank is arranged inside a ship compartment, the tuning balance water tank comprises a main water tank and an auxiliary water tank, the lift fans are arranged on decks at the periphery of the ship body, a fixing balancing weight and a variable balancing weight water tank device are arranged on a balance arm of the self-balance crane, and the dual-water-spraying balance devices are arranged at the bottoms of the two sides of the ship boards. By means of gravity and buoyancy of the balance water channels, the gravity of the tuning balance water tank, lifting force of the fans and thrust of a dual-water-spraying water pump, the balance torque of the ship body is supplied, the balance force of the crane can be automatically adjusted through the variable weighing water tank, the dual-water-spraying balancedevice can supply forward or backward thrust during ship navigation, when cargos are lifted, upwards thrust can be provided by turning by 90 degrees, and various operation functions can be achieved.

The invention provides a novel lifting ship balance system and a working method thereof. The system comprises a hull, balance water grooves, tuning balance water tanks, lift fans, self-balancing cranes, sucking disc stabilizing devices and a PLC control system; the balance water grooves are formed in the ship boards at the two sides of the hull, the tuning balance water tanks are arranged at the head and tail in the hull, the tuning balance water tanks comprise the main water tank and the sub tank, the lift fans are arranged on the deck of the periphery of the hull respectively, the deck is provided with two lifting rails, the self-balancing cranes are arranged on the lifting rails, balancing arms of the self-balancing cranes are provided with variable weight water tank devices, the sucking disc stabilizing devices are arranged on the ship boards of the peripheries of the head and tail of the hull, and the sucking disc stabilizing devices can expand and contract laterally. The suckingdisc stabilizing devices can expand and contract when goods are lifted, so that sucking discs are used for being fixedly connected to a shore dock or another hull to form a whole body, thereby conveniently and quickly strengthening the stability of ships and effectively preventing the ships from rolling over.

The invention relates to a ship additional device capable of resisting shock, preventing overturning and converting wave energy. The ship additional device comprises wing tanks arranged on two sides of a ship body, wherein outer plates fixed on the ship body are arranged on the wing tanks; the outer plates and ship walls form a space structure of which the top end is closed and the bottom end is opened; the upper part of the space structure is divided into a plurality of sealed air cabin chambers by the space structure through baffles, and the lower part of the space structure is divided into corresponding unit cabin chambers through vertical baffles or slant baffles the unit cabin chambers are positioned under the corresponding air cabin chambers, the bottoms of the unit cabin chambers are opened, and the upper parts of the unit cabin chambers communicate with the corresponding air cabin chambers through an one-way air inlet valve; besides, the unit cabin chambers communicate with outer spaces over a water surface through air ducts; the air cabin chambers are positioned over a load water line of the ship body; the air outlet ends of the air cabin chambers are connected with air accumulation equipment or air exhaust equipment on the ship through air transmission pipelines; the air outlet ends of the air cabin chambers are separately controlled by separate gas valves.

It is described a power distribution system for a dynamically positioned vessel. The power distribution system comprises: a plurality of busses (101,103,105,107) comprising a first bus (103) to which a load (123) is connectable; a plurality of switches (109,111,113,115) comprising a first switch (111) and a second switch (113), wherein the plurality of busses is connected via the plurality of switches in an interjacent manner to form a ring (117), the first bus is connected in between the first switch and the second switch. The power distribution system is configured to open the first switch and concurrently open the second switch, if a first current (149) flowing via the first switch in a direction towards the first bus is above a predetermined current threshold for longer than a predetermined time duration and a second current (143); flowing via the second switch in a direction towards the first bus is above the predetermined current threshold for longer than the predetermined time duration, thereby disconnecting the first bus from the ring while all other buses remain connected together. Further a method of power distribution and a vessel are provided.

The invention relates to an automatic balancing propeller used for ships, vehicles and aircrafts. The automatic balancing propeller used for the ships, the vehicles and the aircrafts comprises a pressure container, a high-pressure gas inlet pipe, a high-pressure jet bag, a water container, a floater and a communicating vessel; an outer sleeve pipe is arranged at the upper end of the water container; four vents are formed in the middle of the outer sleeve pipe; two positively-faced vents communicate with the high-pressure gas inlet pipe; the other two vents communicate with the high-pressure jet bag; a sliding valve is arranged in the outer sleeve pipe; the floater is connected with the lower end of the sliding valve; and sliding valve supplying gas outlet grooves are formed in the middle of the sliding valve. According to the automatic balancing propeller, the pressure on the two sides of the sliding valve is the same and is not affected by the unidirectional pressure of the high-pressure air, and the bidirectional pressure is mutually offset, so that the sliding valve is more sensitive, and meanwhile the volumes and weights of the floater and the water container are correspondingly reduced.

The invention belongs to the field of ships and discloses a ship straight wing stabilization system. The system comprises a hull, wherein a placing groove is formed in one side of the ship body, a straight wing propeller is mounted in the placing groove, the straight wing propeller comprises a machine base, a rotor angle controller is fixedly mounted at the top of the base, a cavity is formed in the machine base, a transmission shaft is rotationally installed on an inner wall of the top of the cavity, the bottom of the transmission shaft extends out of the machine base, the transmission shaftis fixedly sleeved with a first gear, one side of the first gear is provided with a rotating motor fixedly installed on an inner wall of the bottom of the cavity, and a second gear is fixedly installed on an output shaft of the rotating motor. The system is advantaged in that when stabilization is carried out in a ship navigation state, navigation resistance is hardly generated by adjusting anglesof rotor wings, under the sea condition without stormy waves, the system can be retracted into the ship body along sliding grooves so as to further reduce navigation resistance of the ship.

The invention aims at providing a movable self-balancing offshore platform. By means of the platform, the problems of shaking and vibrating of the offshore platform can be greatly solved, and the comfort and the safety of the offshore platform are greatly improved. Platform floating rings for providing buoyancy are mounted outside a body platform and fixedly connected with the body platform, the sizes of the platform floating rings can be adjusted, and the requirements of adapting to offshore platforms with different weights are met. A vector stabilization module of the array type offshore platform belongs to an active stabilization manner, the rotating directions and the rotating speeds of propellers at different positions can be adjusted according to the inclination angle of the offshoreplatform, and the posture of the offshore platform on the sea is dynamically controlled efficiently at quick response. The vector propellers can provide power needed by moving the platform for the offshore platform, and in addition, the vector propellers can achieve a power positioning effect for the offshore platform.

A hydrofoil device for a mobile offshore apparatus, in particular, a watercraft. The hydrofoil device includes at least one base body with at least one connection unit which is arranged for connecting the hydrofoil device to the mobile offshore apparatus. At least one hydrofoil is arranged on the base body. At least one flow generator is arranged to generate a flow around the hydrofoil. The hydrofoil device in its intended use is rotatable at least about a substantially vertical axis of rotation depending on at least one control data set that can be provided.

A portable water self-balance entertainment ship capable of being automatically contracted and expanded mainly comprises a balance storage box, rotating folding floating bodies, a water spraying pumppush device and a waterproof electric control device. The water spraying pump push device and the waterproof electric control device are mounted in the balance storage box; the rotating folding floating bodies are hinged to the periphery of the balance storage box; and the waterproof electric control device is electrically connected with the water spraying pump push device and the rotating foldingfloating bodies. When the waterproof electric control device controls the rotating folding floating bodies to rotate to be unfolded, the entertainment ship is expanded into a hull with the balance storage box as the center and the rotating folding floating bodies on the periphery as ship floating bodies; and when the waterproof electric control device controls the rotating folding floating bodiesto rotate to be folded and stored into the balance storage box, the entertainment ship is contracted into a portable suitcase with the balance storage box as a main body. The portable water self-balance entertainment ship is high in adaptability, capable of achieving self-alignment to prevent overturning, convenient to carry, high in wind wave resistance, and high in stability and safety.

A barge for recovery of a rocket launch vehicle is proposed, which can recover a launch vehicle from the sea onto the land in safety during launch vehicle recovering work. The barge can recover the launch vehicle in safety by effectively preventing a slope of the structure which supports the launch vehicle.

The invention discloses a self-stability auxiliary device for a ship by means of water-jet propulsion, which is characterized by comprising a left water-jet runner and a right water-jet runner which are in axial symmetry, a flared water inlet is communicated at a junction of the two water-jet runners, a float bowl is arranged opposite to the flared water inlet, a water outlet and a connecting rod are arranged at the tail end of each water-jet runner, a left connecting shaft and a right connecting shaft which are linked with the float bowl are further arranged at the junction of the two water-jet runners, a left valve plate and a right valve plate are arranged at the ends of the left connecting shaft and the right connecting shaft respectively, two stop blocks are axially arranged on the upper portions of the left connecting shaft and the right connecting shaft respectively, and a float bowl limit block connected with the float bowl is clamped between the two stop blocks. The self-stability auxiliary device is simple in structure, ingenious in design, low in cost and capable of generating reverse damping when the ship sways, so that sway of the ship is abated, and the ship is stabilized.

The invention relates to the technical field of intelligent robots, and discloses a protection device for preventing undercurrent damage and overturning. The protection device comprises a driving device, the front end of a turntable is rotatably connected with a connecting rod, the other end of the connecting rod is rotatably connected with a baffle plate, and one end, far away from the connecting rod, of the baffle plate is elastically connected with a reset spring. According to the protection device for preventing undercurrent damage and overturning, when the undercurrent impacts the shell, a shaking phenomenon occurs, the shell shakes, so that a bent rod drives a connecting piece to slide at the front end of a resistor strip, a rotating disc is driven, then a baffle and a side plate are driven to slide relatively, water flow flows out through a gap between the baffle and the side plate, the impact force of the undercurrent on the shell is reduced, and the shell damage due to undercurrent impact is avoided; and when the water flow passes through the interior of the shell, the carrying block moves to drive the pushing block to move, then the fan blades on the left side and the right side of the threaded rod are driven to rotate through the threaded sleeve, the acting force generated by rotation of the fan blades counteracts the acting force generated when the water flow passes through the shell, and the phenomenon that the shell turns on one side is prevented.

According to embodiments of the present invention, an underwater hull cleaning machine is provided. The cleaning machine includes a housing including a base region adapted to be arranged facing at least part of an external surface to be cleaned; a guiding mechanism coupled to the housing, wherein the guiding mechanism is configured to enable the cleaning machine to be maneuvered along the externalsurface; and at least one brush configured to move between an extended position and a retracted position. In the extended position, the at least one brush is extended downwardly towards the base region to be in contact with the external surface. In the retracted position, the at least one brush is moved upwardly away from the base region to be free from contact with the external surface. According to further embodiments, a hull cleaning system and a method for cleaning a vessel hull are also provided.

The subject invention is a design of marine cargo vessel with added mechanical equipment specifically designed to minimize dangerous motions of the vessel induced by high waves while the vessel is being loaded or unloaded from fixed platforms (bottom supported or tension leg) at sea or on inland waters. The vessel uses three means of reduction of such induced motions, which have not before been combined for this purpose. These are a small water plane area multiple hull design, rapid ballasting while loading and unloading, and vertical thrusters.