150results about "Ship vibration reduction" patented technology

The invention relates to the technical field of hydraulic control, and provides a pump-controlled semi-active ship heave compensation hydraulic system and a control method thereof.The system comprises an active compensation hydraulic module, a passive compensation hydraulic module, a sensor module, a controller and a motion sensor; the passive compensation hydraulic module comprises a nitrogen cylinder unit, an energy accumulator unit, a gas-liquid converter, a seventh electromagnetic directional valve, a fourth electromagnetic directional valve and a passive compensation asymmetric hydraulic cylinder; the active compensation hydraulic module comprises a third energy accumulator, a servo motor, a two-way quantitative hydraulic pump, a first one-way valve, a second one-way valve, an active compensation asymmetric hydraulic cylinder, a first electromagnetic reversing valve, a second electromagnetic reversing valve and a third electromagnetic reversing valve. According to the invention, passive compensation and active compensation are fused, so that the compensation precision and efficiency are greatly improved; and an electro-hydraulic servo pump control mode is adopted, so that the advantage of high control precision of a valve control mode is reserved, and the stability is also improved.

A flywheel front cover and a flywheel rear cover are buckled to form a vacuum spherical shell, front-end electromagnetic poles are evenly distributed on the inner side of the flywheel front cover, rear-end electromagnetic poles are evenly distributed on the inner side of the flywheel rear cover, permanent magnet magnetic poles are evenly distributed on an outer hub of a flywheel, and permanent magnet magnetic poles are evenly distributed on an inner hub of the flywheel rear cover. When a ship jolts and shakes due to the influence of storm waves or ocean currents, the flywheel rotates at a high speed in the vacuum spherical shell in the left-right direction of the flywheel shaft, large rotational inertia is generated when the flywheel rotates at the high speed, and through energy transmission of the right side supporting damping cylinder, the left side supporting damping cylinder, the right side supporting damping cylinder rod and the left side supporting damping cylinder rod, the flywheel can rotate at the high speed. The energy for driving the vacuum spherical shell to swing left and right and horizontally is consumed, so that the rolling amplitude and frequency of the ship are greatly reduced, the course stability is improved, and the rolling amplitude and frequency of the ship can be reduced.

The invention belongs to the technical field of welding platforms, and particularly relates to an immersed tube overwater welding operation platform which comprises a floating box, a welding supporting mechanism and a plurality of pipeline locking mechanisms, and the inner wall of the floating box is divided into nine air floating chambers through partition plates. The pipeline can float on the water surface to complete welding butt joint, butt joint of pipelines of different lengths is adapted, and the quality efficiency is guaranteed by monitoring the inclination state of the floating box and the welding platform in real time and adjusting the balance weight to prevent tipping and create a stable welding environment; stable fixed tension is provided, wind power and water flow influences are resisted, position deviation is prevented, reverse compensation force can be provided in cooperation with a propeller when large driving force is applied in one direction, fatigue damage of a traction rope due to continuous impact force is avoided, rapid water supply and drainage of the buoyancy tank are achieved, water is rapidly injected to increase the overall weight when large impact force is applied, and the tensile force of the traction rope is improved in a matched mode; the water flow pushing efficiency is reduced, the resistance stability is improved, and the positioning effect is optimized.

The invention discloses a motion suppression floating type wind power foundation structure based on a liquid damping effect. The motion suppression floating type wind power foundation structure comprises a floating ball, a connecting rod, an inclined strut and a damper base. The four floating balls are arranged in a square shape, the floating balls are connected through the connecting rods, the damper base is located on the central axis of the square defined by the four floating balls and located below the floating balls, and each floating ball is connected with the damper base through the corresponding inclined strut. The damper base is provided with a mounting seat for mounting a fan tower; a hollow channel is formed in the inclined strut; a crossed partition plate is arranged in the damper base and divides the interior of the damper base into four spaces with the same volume, a damping hole is formed in the partition plate between every two adjacent spaces, and each space is correspondingly communicated with the hollow channel of one inclined strut; and liquid is filled in the damper base and the hollow channel of the inclined strut. When the floating type foundation shakes, the liquid damping system can play a good role in damping force.

The invention relates to the technical field of launching platforms, and discloses an offshore suspension type rocket launching platform structure which comprises a ship body assembly, overturning assemblies, a floating assembly, a feeding assembly and a launching assembly, the overturning assemblies are symmetrically hinged to the two sides of the ship body assembly, and the floating assembly is connected with the overturning assemblies through a stabilizing assembly; the feeding assemblies are symmetrically arranged on the top of the ship body assembly, and the launching assembly is installed in the middle of the ship body assembly. A first overturning frame is installed on the floating assembly, a second overturning frame is rotationally connected to the middle of the first overturning frame, a third overturning frame is rotationally connected to the middle of the second overturning frame, propellers are installed in the middle of the third overturning frame, and the propellers are installed on the first overturning frame in a four-corner distribution mode; the problems that in the prior art, an existing offshore suspension type rocket launching platform is poor in stability due to fluctuation of seawater, and the launching angle cannot be adjusted are solved.

A marine eight-degree-of-freedom anti-swing gallery bridge stabilizing system comprises an anti-swing lifting system and a telescopic gallery bridge device arranged on the upper portion of the anti-swing lifting system. The anti-swing lifting device is fixedly connected with a deck of a ship body through a base, and the anti-swing lifting system is composed of a horizontal left-right rotating device arranged on the upper plane of the base, a transverse anti-swing longitudinal anti-swing device arranged on the upper portion of the horizontal left-right rotating device, and a longitudinal anti-swing device arranged on the lower portion of the base. The lifting devices are arranged on the left side and the right side of the transverse anti-swinging and longitudinal anti-swinging device and on the bottom base; the telescopic gallery bridge device is erected on a rolling platform at the upper part of a transverse anti-swinging device and a longitudinal anti-swinging device which are arranged between the left frame and the right frame of the lifting device in a stacked manner; the whole telescopic gallery bridge device can swing left and right, transverse and longitudinal state adjustment can be achieved under the action of the transverse anti-swing and longitudinal anti-swing device, and eight-degree-of-freedom regulation and control of the whole telescopic gallery bridge device can be achieved under the action of the lifting device.

The invention discloses a floating type photovoltaic platform capable of actively absorbing waves. The floating type photovoltaic platform comprises a platform floating body and an active wave absorbing device, the platform floating body comprises a plurality of platform buoys, and the platform buoys are connected through flexible connecting pieces; the active wave absorbing device is connected with the platform floating body; the active wave absorbing device comprises an active wave absorbing plate, an active wave absorbing cabin floating body and a propelling rod; a radar wave measurement sensor is arranged on the active wave absorbing cabin floating body, and a control module is arranged in the active wave absorbing cabin floating body; one end of the propelling rod is connected with the active wave-absorbing cabin floating body, and the other end of the propelling rod is connected with the active wave-absorbing plate; the control module controls the pushing rod to stretch out and draw back according to data of the radar wave measurement sensor, the active wave absorbing plate is driven to move, the technical problems that the sea environment wave condition is poor, and the wave resisting effect of the floating type photovoltaic platform is poor are solved, and the structural strength and stability of the whole platform are enhanced.

The invention belongs to the technical field of ship equipment, and discloses a wave suppression device and a ship. The wave suppression device comprises a hinge four-bar mechanism, a spoiler sheet and a rotary driving part, and the rotary driving part drives the spoiler sheet to rotate through the hinge four-bar mechanism, so that the spoiler sheet has a working position extending into water. The rotary driving part is arranged above the water surface, and the sealing surface of the rotary driving part is separated from the seawater environment, so that the possibility that marine organisms are attached to the sealing surface of the rotary driving part is fundamentally avoided, and the maintenance frequency and the environmental protection risk are remarkably reduced. Besides, the rotary driving part is far away from a seawater corrosion environment and does not need to bear underwater pressure, so that the failure probability of the sealing part caused by seawater corrosion or mechanical shock is reduced, the working stability of the driving system is improved, and the service life of the driving system is prolonged.

According to the overtopping type wave-resistant power generation system for the offshore floating type photovoltaic system, in the system, a head wave ramp comprises a slope surface which is inclined downwards in the direction away from the photovoltaic power generation system so as to be opposite to the photovoltaic power generation system to receive waves; a plurality of long-strip-shaped guide plates extending in the direction away from the photovoltaic power generation system are arranged on the slope surface, the long-strip-shaped guide plates are arranged according to a preset angle so as to form a contraction ramp with a narrow upper part and a wide lower part on the slope surface, and the rotor comprises a rotor shell which receives waves from the head wave ramp to rotate and a permanent magnet connected with the device shell; the permanent magnet rotates along with the rotor shell to rotate relative to the stator coil to convert wave energy into electric energy and weaken waves at the same time. The system improves the stability and safety of the structure.

The present invention relates to the field of hydraulic control technology, and provides a pump-controlled semi-active ship heave compensation hydraulic system and a control method thereof, wherein the system comprises: an active compensation hydraulic module, a passive compensation hydraulic module, a sensor module, a controller and a motion sensor; the passive compensation hydraulic module comprises a nitrogen bottle unit, an accumulator unit, a gas-liquid converter, a seventh electromagnetic reversing valve, a fourth electromagnetic reversing valve and a passive compensation asymmetric hydraulic cylinder; the active compensation hydraulic module comprises a third accumulator, a servo motor, a bidirectional quantitative hydraulic pump, a first check valve, a second check valve, an active compensation asymmetric hydraulic cylinder, a first electromagnetic reversing valve, a second electromagnetic reversing valve and a third electromagnetic reversing valve. The present invention integrates passive compensation and active compensation, greatly improving the compensation accuracy and efficiency; adopting an electro-hydraulic servo pump control method not only retains the advantages of high control accuracy of the valve control method, but also improves stability.

The invention relates to the field of ocean engineering, and discloses a multi-layer pore plate structure for shock absorption of an ultra-large floating body, the structure is composed of a plurality of pore plates which are horizontally arranged, and the pore plates are rigidly connected with the floating body through fixing devices and are made of high-strength light materials; open pores are uniformly distributed in the surface of each pore plate, and the porosity, the plate spacing, the water entry depth and the plate layer number of the pore plates can be flexibly adjusted according to the working environment and the wave condition of the floating body; the porosity range is 6%-15%, the distance between the plates is 4.2%-16.7% of the working water depth of the floating body, and the water entering depth is 1-3 times of the height of the wave below the bottom surface of the floating body; through reasonable design and arrangement, the multiple layers of porous plates can effectively reduce transmission and reflection of wave energy, the energy dissipation capacity is enhanced, and vibration reduction of the head wave side and dynamic stability of the back wave side are achieved; the damping device has the characteristics of flexible structural design, remarkable damping effect and wide application range, and is suitable for offshore and deep sea ultra-large floating body engineering.

The invention belongs to the field of rocket seaborne launching, and particularly relates to a rocket seaborne launching ship stabilization auxiliary device which is characterized in that the rocket seaborne launching ship stabilization auxiliary device comprises two telescopic rods installed on the two sides of a ship body, and the two telescopic rods I are arranged on the two sides of the ship body; the output shafts of the two first telescopic rods located on the same side are connected to the same auxiliary stabilizing mechanism through lifting blocks. The auxiliary stabilizing mechanism comprises a U-shaped mounting frame, the bottom end of the interior of the mounting frame is rotationally connected with a buoyancy compartment through a rotating shaft, a second telescopic rod driving the buoyancy compartment to rotate around the rotating shaft is further mounted between the buoyancy compartment and the mounting frame, and storage grooves are formed in the two sides of the buoyancy compartment. The device is unfolded before the rocket launching ship needs to load a rocket and launch the rocket, the stability of the rocket launching ship can be remarkably improved, a more stable bearing platform is provided for follow-up rocket installation and launching, the device can be completely folded in the normal running process of the rocket launching ship, and the ship body flexibility is high.

The invention discloses a floating type power transmission tower and a control method thereof. The power transmission tower comprises a floating platform, a tower body and a plurality of electromagnetic hydraulic dampers. A tower foot platform of the tower body is connected with the driving ends of the electromagnetic hydraulic dampers, and all the electromagnetic hydraulic dampers are arranged at the top of the floating platform; the electromagnetic hydraulic damper comprises a hydraulic cylinder, an electromagnetic fluid, a piston, a piston lever and a plurality of electromagnetic coils; the hydraulic cylinder is filled with electromagnetic fluid which changes damping force along with changes of external current signals. A piston arranged in the hydraulic cylinder divides the hydraulic cylinder into two cavities, the piston is provided with a fluid channel penetrating through the two cavities, and one end of the piston is fixedly connected with one end of a piston lever. The other end of the piston lever is a driving end; each electromagnetic coil is embedded in the position, surrounding the fluid channel, in the piston, and the electromagnetic coils are used for generating current signals. According to the floating type power transmission tower, impact and damage caused by sea stormy waves are reduced.

Methods and systems are provided for nautical stationkeeping of free-floating objects. In one example, a method includes adjusting translational motion of a body freely floating in water by rotating the body. The translational motion may be adjusted, for instance, to maintain the body within a geographic area. In certain examples, the adjustment of the translational motion may be realized via a Magnus effect induced by rotating the body. The body may be configured as, for example, a free-floating object such as a wave engine.

The present invention discloses a floating wind turbine foundation and wind turbine equipment. The floating wind turbine foundation includes at least one floating body unit, which includes an annular floating body and a sway reduction plate assembly. The sway reduction plate assembly includes at least two sway reduction plates arranged vertically. The sway reduction plates are provided with a plurality of first flow-disrupting holes. The first flow-disrupting holes penetrate the sway reduction plates along their thickness. The first flow-disrupting holes of two adjacent sway reduction plates are vertically staggered. The topmost sway reduction plate is connected to the annular floating body. The upper surface of the topmost sway reduction plate and the inner peripheral wall of the annular floating body enclose a receiving groove. The present invention can effectively reduce the shaking and heaving amplitude of the wind turbine foundation, improve the stability of the wind turbine foundation, and improve the anti-overturning effect.

The invention relates to the technical field of floating platform verification, and specifically discloses a method and system for optimizing the stability of a floating platform based on a boundary element method and coordinates, comprising: obtaining the coordinates of discrete points of the floating platform and the coordinates of the center of gravity; setting the step value of the inclination angle of the floating platform and the wind direction; calculating the displacement volume of the floating platform in an initial state; performing coordinate transformation on the discrete points and the coordinates of the center of gravity of the floating platform according to the step value of the inclination angle of the floating platform and the wind direction, and respectively calculating the displacement volume, waterline area, center of gravity coordinates and center of buoyancy coordinates of the floating platform under different inclination angles and wind directions, so as to determine the position of the waterplane after inclination; performing coordinate transformation on the discrete point coordinates and the center of gravity of the floating platform according to the position of the waterplane, and calculating the transformed waterline area, center of gravity coordinates and center of buoyancy coordinates; and repeatedly calculating the stability lever arm of the floating platform by using the difference between the transformed center of gravity abscissa coordinates and the center of buoyancy abscissa coordinates until the stability lever arm is less than 0.

This invention discloses a semi-submersible offshore platform with movable wave-breaking plates, belonging to the field of floating wind turbine turbulence. It comprises multiple platform components connected by trusses. Each platform component includes a column with a vertically oriented axis. Several movable wave-breaking plates are provided on the outer wall of the column, spirally distributed around the column's axis. Each movable wave-breaking plate includes an anti-roll plate fixed to the column's peripheral wall. A hinge is located at the lower end of the anti-roll plate; one side of the hinge is fixedly connected to the anti-roll plate, and the other side is connected to an arc-shaped cover plate. The hinge's rotation axis is horizontally oriented. The side of the arc-shaped cover plate facing the column's outer wall bulges upwards, allowing it to rotate around the hinge's axis under buoyancy. This invention can reduce vortex-induced motion and decrease platform oscillation.

The invention discloses a passive hydraulic system and control method of a double-rack hydraulic cylinder, which belongs to the technical field of ship motion control. The double-rack hydraulic cylinder comprises two cylinder bodies, rack pistons are installed in the cylinder bodies, the rack pistons in the two cylinder bodies move in opposite directions, a transmission shaft is installed between the two cylinder bodies, a gear is arranged outside the transmission shaft, the transmission shaft is connected to the racks of the two rack pistons through the gear, and the transmission shaft is connected to the precession shaft of the gyro stabilizer. The double-rack hydraulic cylinder of the invention brakes the gyro precession of the high-speed rotor, and the passive hydraulic system generates a pressure difference in the hydraulic oil in the two hydraulic cylinders through a two-position four-way proportional reversing valve, thereby generating a damping force on the precession of the gyro, thereby achieving the effect of suppressing the rolling of the ship.

The invention relates to the technical field of protection structures, in particular to overwater photovoltaic equipment with a protection function. The device comprises a floating platform, a plurality of supporting columns are fixed to the outer side of the top end of the floating platform, a supporting plate is fixed to the top ends of the supporting columns, a photovoltaic panel is fixed to the top end of the supporting plate, a plurality of buoyancy rings are fixed to the bottom end of the floating platform, and a plurality of L-shaped frames are slidably connected to the outer side of the interior of the floating platform; a guide sliding cylinder is fixed to the bottom ends of the L-shaped frames, and a telescopic cylinder is slidably connected to the inner side of the guide sliding cylinder. According to the overwater photovoltaic equipment with the protection function, a photovoltaic panel is assembled above a supporting plate, a floating platform floats on the water surface, an L-shaped frame, a buoyancy cylinder, a guide sliding cylinder and a telescopic cylinder float under the water surface, when sea waves push the floating platform, the L-shaped frame and the floating platform slide, and the floating platform is driven by the buoyancy cylinder to slide; and finally, the floating platform and the photovoltaic panel are pulled back through the L-shaped frame, so that the stability of the photovoltaic panel and the floating platform is maintained.

The invention relates to a heaving plate with adjustable damping, a floating platform and a control method thereof.The heaving plate comprises a plate body, a water passing adjusting hole penetrating through the upper end face and the lower end face of the plate body is formed in the plate body, the heaving plate further comprises an opening and closing adjusting device installed on the plate body, and the opening and closing adjusting device comprises a plugging piece and a driving mechanism; the blocking piece is used for blocking or opening the water passing adjusting open hole, and the driving mechanism is connected with the blocking piece and can drive the blocking piece to move and adjust the opening and closing degree of the water passing adjusting open hole. The heaving plate is arranged in the floating platform, the damping effect of the heaving plate can be adjusted according to actual needs, use is flexible, and the stability and use flexibility of the floating platform can be ensured.

The invention discloses an image recognition intelligent sensing type full-cavity magneto-rheological floating fan stabilization system and method. The system comprises an environment intelligent sensing module, a digital twinning module, a full-cavity magneto-rheological execution module and a central control module. The environment intelligent sensing module collects a wave image in real time and outputs a sea wave period; the digital twin module reconstructs a six-degree-of-freedom motion state of the variable floating type fan platform and a three-dimensional scene view of surrounding sea waves; the full-cavity magneto-rheological execution module moves and excites according to the sea wave period, the acting area and intensity of a magnetic field are adjusted, the chaining degree of magneto-rheological fluid is changed, and damping stepless adjustment is achieved. The central control module generates a corresponding control instruction and sends the control instruction to the full-cavity magneto-rheological execution module; according to the method, digital and physical double reproduction of floating type fan platform motion and the sea wave environment is achieved, self-adaptive damping adjustment can be accurately and rapidly conducted on broadband sea waves, and the power generation efficiency and platform safety are remarkably improved.

The present invention discloses a wave compensation ship and a compensation method thereof. The ship comprises a ship-type main body for navigation, a deck platform, and a compensation device. The compensation device is used to compensate the deck platform for waves. The ship-type main body comprises a plurality of hull units and a buffer connection device. A compensation device is arranged between each hull unit and the deck platform. The buffer connection device comprises a first servo cylinder. The first servo cylinder comprises a fixed pair and a movable pair. A spring damper is sleeved on the movable pair. One end of the spring damper is connected to the fixed pair, and the other end is fixedly connected to the movable pair. The fixed pair is hinged to the side of one hull unit, and the movable pair is hinged to the side of another hull unit. A plurality of mutually connected hull units are arranged to compensate the deck platform respectively, so that the compensation is more flexible. A buffer connection device is adopted between the hull units. The lateral compensation can be realized by telescoping the buffer connection device, thereby increasing the compensation range and improving the ability of the hull to maintain stability when encountering strong lateral winds and waves.

The invention discloses an offshore floating type opening control anti-rolling photovoltaic power generation platform which comprises a top frame, a bottom frame, a plurality of first stand columns, a buoy and a photovoltaic panel, the bottom frame comprises a bottom frame and a plurality of connecting rods, and the connecting rods are arranged between two vertical angles of the bottom frame. The first stand columns are arranged between the vertex of the top frame and the corresponding vertex of the bottom frame, the two ends of the connecting rod are connected with the first stand columns respectively, a first water sump is arranged at the bottom of each first stand column, an opening for seawater to enter is formed in the bottom wall of each first water sump, and the float bowls are arranged on the bottom frame. The buoyancy module is used for providing buoyancy for the bottom frame; and the photovoltaic panel is arranged on the top frame. According to the offshore floating type air pressure control anti-rolling photovoltaic power generation platform, the shaking influence of offshore wind, waves and flow on the platform can be effectively reduced, the platform overturning risk is reduced, and the stability and safety of the photovoltaic power generation platform are improved.

The invention discloses an offshore wind power floating type foundation, a wind power assembly and a preparation method, and belongs to the field of offshore wind power. The offshore wind power floating type foundation comprises a first stand column, a second stand column and a third stand column which are arranged at intervals in a surrounding mode; the heaving disc is connected with one end of the first stand column; the buoy is connected between one end of the second upright post and one end of the third upright post; the deck pipe is connected between the other end of the first stand column and the other end of the second stand column; wherein the heaving disc and the buoy are the same in structure, each of the heaving disc and the buoy comprises a double-layer pipe and concrete filled in the double-layer pipe, the double-layer pipe of the heaving disc is connected with one end of the first stand column, and the double-layer pipe of the buoy is connected between one end of the second stand column and one end of the third stand column. The floating device has the technical effects that the structure is simple, and the floating stability is good.

The present invention relates to the technical field of offshore aquaculture equipment, and more specifically, to a deep-sea aquaculture equipment, comprising aquaculture equipment and a buoyancy buffer device, wherein the buoyancy buffer device comprises a buffer frame assembly and a float; the buffer frame assembly comprises a space truss, a fixed frame, an elastic buffer assembly and a damping assembly, the two sides of one end of the space truss are connected to the fixed frame, the two sides of the other end of the space truss are connected to the two ends of the elastic buffer assembly, and the damping assembly is located between the fixed frame and the elastic buffer assembly. The present invention uses a float to stably float the entire equipment on the sea surface, dilutes the external force of wind and waves by providing a buoyancy buffer device, utilizes the good wind and wave resistance of the space truss for buffering in the buoyancy buffer device, and improves the overall tolerance limit of the buffer frame assembly by connecting the space truss with the fixed frame, the elastic buffer assembly and a number of damping assemblies, thereby preventing the external force of wind and waves from affecting the aquaculture equipment and allowing the entire equipment to have better wind and wave resistance.

The invention belongs to the technical field of semi-submerged platforms, and discloses a transverse supporting structure and a semi-submerged platform, the transverse supporting structure comprises two transverse supporting pieces which are arranged in the transverse direction of the semi-submerged platform and arranged in the longitudinal direction of the semi-submerged platform at intervals, and the two transverse supporting pieces are located between two stand columns of the bow or the stern of the semi-submerged platform; each transverse supporting piece is used for being connected with two stand columns of the bow portion or the stern portion of the semi-submersible platform. The heaving plate is arranged between the two transverse supporting pieces and connected with the two transverse supporting pieces, and first reinforcing ribs are arranged on the heaving plate. According to the cross arm structure, the heaving, rolling and pitching periods of the semi-submerged platform can be prolonged, resonance, equipment damage and the like caused by the fact that the inherent period of the semi-submerged platform is close to the wave period are avoided, the motion response of the semi-submerged platform is reduced, and the seakeeping performance of the semi-submerged platform is improved.

The invention discloses a floating body type wind power generation device, and relates to the technical field of distribution box assembly. The outdoor distribution box assembling device comprises a base, and the top of the base is movably connected with a bottom plate; the surface of the turnover fixing plate is movably connected with a side plate; the side face of the overturning fixing plate is fixedly connected with an arc-shaped pushing block, the side face of the arc-shaped pushing block is movably connected with a first hydraulic block, the bottom of the first hydraulic block is fixedly connected with a second hydraulic block, and the rear side of the second hydraulic block is movably connected with a limiting sliding block through the first pushing block. The other end of the first hose is fixedly connected with a third hydraulic block, and the side face of the third hydraulic block is fixedly connected with a fourth hydraulic block. According to the outdoor distribution box assembling device, through compression of a first hydraulic block, a second hydraulic block, a first push block, a limiting sliding block, a first hose, a third hydraulic block and a fourth hydraulic block, the base and the ground are kept in a fixed state while the bottom plate is fixed, and the device is more stable.

The present application provides a self-resetting device and method suitable for vibration reduction of a floating vertical-axis wind turbine. The device includes an inertia component, a damping component, a support component, and a friction component; the friction component realizes friction energy dissipation and vibration reduction through the friction between the arc-shaped tower base at the bottom of the central tower and the U-shaped groove, and uses the self-weight of the wind turbine to fall back to the bottom of the U-shaped groove to realize the automatic reset function; the inertia component realizes the inertia enhancement of the device by arranging the spoiler and the heaving plate in seawater; the damping component realizes functions such as energy dissipation and vibration reduction and automatic reset through the stretching and compression deformation of a plurality of damping springs; the support component separates the upper wind turbine and the lower floating platform, achieving the effect of adopting different vibration suppression measures for different excitation sources; the device can take corresponding measures for different positions of the wind turbine to perform efficient vibration control, improving the overall operation safety performance of the wind turbine.

The invention relates to the technical field of floating platform checking, and particularly discloses a method and system for optimizing the stability of a floating platform based on a boundary element method and coordinates, and the method comprises the steps: obtaining boundary discrete point coordinates and barycentric coordinates of the floating platform; setting a stepping value and a wind direction of an inclination angle of the floating platform; calculating the drainage volume of the floating platform in the initial state; performing coordinate transformation on the discrete points and the barycentric coordinates of the floating platform according to the stepping value of the inclination angle of the floating platform and the wind direction, and respectively calculating the drainage volume, the waterline area, the barycentric coordinates and the buoyancy center coordinates of the floating platform under different inclination angles and wind directions so as to determine the position of the inclined waterline plane; performing coordinate transformation on discrete point coordinates and gravity center of the floating platform according to the position of the waterline plane, and calculating the area of the waterline, the coordinates of the gravity center and the coordinates of the buoyancy center after transformation; and repeatedly calculating the stable force arm of the floating platform by utilizing the difference value between the converted gravity center abscissa and the converted buoyancy center abscissa until the stable force arm is less than 0.

The invention discloses an offshore wind power platform and an offshore wind power system, and relates to the technical field of wind power generation. The supporting column is used for supporting the fan; the floating barrels are distributed around the supporting column at intervals, and the floating barrels are connected with the supporting column through connecting pieces; the damper is used for being connected with the bottom of the supporting column so as to restrain vertical displacement of the supporting column. According to the offshore wind power platform, vertical displacement of the supporting columns can be prevented and restrained through the dampers arranged at the bottoms of the supporting columns, so that the risk of fan shaking caused by sea waves is reduced, and compared with the mode that fan shaking is reduced through a water ballast space, the response speed is higher, and the stability of the offshore wind power platform is improved.