Aspects of the present disclosure relates to disruptive coupling systems and methods, and apparatus thereof, for subsea systems. The subsea systems may be subsea oil and gas systems. In one implementation, a subsea system includes a subsea component disposed in seawater, and a disruptive coupling device coupled to the subsea structure and/or surrounding fluid.

A leak containment arrangement for a fluid damper in a wind turbine tower includes a receptacle arranged below the fluid damper; a fluid guide arranged between the fluid damper and the receptacle, which fluid guide is arranged to receive fluid from a leak in the damper and to guide the leaked fluid into the receptacle; and a sensing means arranged to detect fluid in the receptacle. Further provided is a method of providing leak containment for a fluid damper in a wind turbine tower.

A liquid damper for a wind turbine tower includes a damper housing formed from a horizontal lower annulus, a horizontal upper annulus, an essentially cylindrical outer vertical wall and an essentially cylindrical inner vertical wall, wherein the outer diameter of the damper corresponds to the interior diameter of the tower; an operational volume of liquid contained in the damper; and an arrangement of vertical ribs mounted to a vertical wall of the damper. Further provided is a method of assembling a wind turbine.

Technologies are described for devices to absorb vibration. The devices may comprise an inertia track housing, an inertia track fluid reservoir, and an inertia track body. The inertia track fluid reservoir and the inertia track body may be within the inertia track housing. Walls of the inertia track body may define a first and a second spiral inertia track. The first and second spiral inertia tracks may be spiral channels within the outer surface of the inertia track body. The first spiral inertia track may connect a first fluid reservoir with the inertia track fluid reservoir. The second spiral inertia track may connect a second fluid reservoir with the inertia track fluid reservoir. The first and second spiral inertia tracks may be configured to channel the flow of a fluid along the first spiral inertia track and the second spiral inertia track and interact with the fluid to absorb vibration.

A system for damping vibration of a tower structure at a selected one or more natural frequencies of the tower structure. The system includes a tank assembly with one or more tanks, and a fluid positioned in the tank to a preselected depth above a floor. The tank includes wall(s) defining an average travelling distance of a wave through the fluid initiated by the vibration of the tower structure at the natural frequency. The system includes one or more inserts located on the floor in the tank for damping movement of the fluid. The preselected depth and the average travelling distance are selected so that the fluid is movable at the selected natural frequency and out of phase with the vibration of the tower structure, to dampen the vibration of the tower structure at the selected natural frequency.

The present invention provides a method and apparatus for energy absorption and vibrational dampening in a horizontal plane. According to a first preferred embodiment, the present invention discloses an apparatus for damping vibration of a pole which includes a housing with a horizontal floor having an inward curved surface for achieving vibration attenuation at a middle portion thereof to form an enclosed chamber. According to a further aspect of the first embodiment, at least one damping weight is preferably disposed in the inward curved surface and is preferably substantially spherical in shape. According to a further preferred embodiment, at least one dampening weight of the present may preferably include a hollow, inner cavity. According to further aspects of the present invention, the dampening weight preferably may further include a granular material located within the inner cavity.

A method and system to isolate vibrations, including a first pair of fluid chambers disposed to isolate first vibrations between a first body and a second body, wherein the first vibrations are parallel to a first axis, wherein the first body is a propeller hub, a rotor hub, a pylon attachment, or an engine, and wherein the second body is a propeller shaft, a rotor mast, or a body attachment; a second pair of fluid chambers disposed to isolate second vibrations between the first and second bodies, wherein the second vibrations are parallel to a second axis perpendicular to the first axis; first and second inertia tracks disposed to place the first and second pairs of chambers in fluid communication, respectively; and a plurality of elastic energy storage devices coupled to the first body and the second body and disposed to isolate vibrations between the first and second bodies.

A damper and a load-bearing enclosure having the damper are provided. The damper includes a housing forming a containing cavity and a vibration energy dissipation unit located inside the housing, and the containing cavity includes a liquid storage cavity and a mass body movement cavity located at an upper part of the liquid storage cavity; the vibration energy dissipation unit includes a damping liquid contained in the liquid storage cavity and a plurality of mass bodies located inside the mass body movement cavity; and the mass bodies float on the liquid level of the damping liquid, and an outer surface of the mass body is formed with a plurality of toothed projections for breaking waves formed in the damping liquid due to vibration and dispersing the waves in different directions.

A damper includes a vibration energy buffering transfer unit and a vibration energy dissipation unit. The vibration energy buffering transfer unit includes a plurality of piston transfer structures and connecting tubes, the piston transfer structures includes a cylinder and a piston arranged as a pair, the plurality of piston transfer structures surrounding the vibration energy dissipation unit, the connecting tubes inter-connecting the plurality of cylinders, the vibration energy dissipation unit includes a damping liquid accommodating cavity and damping liquid accommodated in the damping solution accommodating cavity, and one end of the cylinder or the piston being connected to the damping fluid accommodating cavity. The load-bearing enclosing structure provided with said damper can effectively suppress vibration.

A vibratory motion reduction system for a pylon assembly includes an inner member having an opening extending therein that receives a first end of the pylon assembly, an outer member moveably attached to the inner member, a tuning mass attached to the inner member and the outer member such that a vibratory motion of the pylon assembly accelerates the tuning mass, a spring member that couples to a second end of the pylon assembly, and the spring member and the tuning mass reduce the vibratory motion of the pylon assembly.