A power generator or sensor apparatus is provided. In another aspect, a power generator is used for water wave energy harvesting. A further aspect provides a power generator including a buoyant, waterproof and/or enclosed outer shell, at least one enclosed inner shell located within the outer shell, a first plurality of balls located between the outer and inner shells, a second plurality of balls located within the inner shell, and spaced apart electrodes affixed to an interior surface of the outer shell. Moreover, an aspect of the present power generator uses fluid, such as water wave movement and wind blowing, to cause nested shells to move which moves multiple balls therein between spaced apart electrodes to generate triboelectric charges or energy for a variety of applications.

A set of units for assembly to form a wind turbine nacelle. The nacelle comprises a rotor-supporting assembly and generator, and a power conversion assembly and the set of units comprises a main unit arranged to be connected to a wind turbine tower and housing the rotor-supporting assembly and the generator, and at least two different auxiliary units each housing an operative component forming part of the power conversion assembly. To allow different wind turbine configurations, one of the auxiliary units can be selected from the at least two auxiliary units and assembled with the main unit to form the nacelle.

A multiport pump and adapter kit for use with a water circulation system for a body of water includes a centrifugal pump assembly having a plurality of outlet ports oriented in different directions and at least one adapter having a first open end configured and dimensioned to be removably connectable to one of said outlet ports, a second open end configured and dimensioned to be removably connectable to a water circulation system, and a hollow body connecting the first open end and the second open end.

A wind turbine nacelle configured for mounting on a wind turbine tower and for supporting a rotor-supporting assembly, the nacelle comprising a main unit, and at least one auxiliary unit. The auxiliary unit accommodates a at least one component, e.g. a converter or transformer. To provide efficient transportation, lower costs and easier assembly, the operative component is suspended directly on the main unit.

A nacelle cover (100) for a wind turbine includes an elongate housing (105) and the front end (107) of the housing (105) is mounted on a bed plate frame (420) which is affixed to the tower (122), the bed plate frame (420) supporting at least one part of a drive train (124) of the wind turbine. At least one machinery component (125) is mounted on the housing (105) at a position laterally spaced from the bed plate frame (420) in a longitudinal direction along the housing (105). The housing (105) includes a structural tube (128) which functions as a vertically displaceable cantilever beam carrying the load of the at least one machinery component (125) mounted thereon.

A support assembly for carrying at least a part of the load of a drive train, a canopy structure and/or other components arranged inside a nacelle of a wind turbine includes a bed frame structurally establishing a connection between the drive train and/or the nacelle and a tower of the wind turbine, and a support structure coupled to the bed frame configured to support at least a part of the load of the canopy structure and/or components arranged inside the nacelle, wherein the support assembly further includes a coupling means to couple the support structure to the bed frame, wherein the coupling means includes a plurality of pins configured to be inserted in insertion holes.

The present disclosure relates to supporting structures for a central frame of a direct-drive wind turbine and methods for managing such structures. A supporting structure is configured to assume a deployed configuration and a stowed configuration. In the stowed configuration, the supporting structure has a shape and size such that the supporting structure can be introduced into the central frame from an outside. In the deployed configuration, the supporting structure has one or more increased dimensions with respect to the stowed configuration, and comprises a working platform.

A convector for cooling a microprocessor includes a volute-shaped housing, a stator, and a rotor, and can be mounted to a CPU board of a computing device for thermal coupling with the microprocessor. The volute-shaped housing of the convector encapsulates the stator and the rotor, and has a radially outer casing which defines a single exit port for guiding a fluid out of the housing. The stator has a plurality of plates configured to conduct heat. The rotor has a plurality of disks and a shaft extending longitudinally along the housing. Together, the housing, the stator, and the rotor define a spiral flow path through the volute-shaped housing, in both radially outward and longitudinal directions, to the single exit port. A motor may be provided to impart rotational motion to the rotor.

The present invention relates to a water intrusion prevention system (1) mounting on a turbine blade (100) of a wind turbine. In order to exhibit excellent weather protection, the water intrusion prevention system (1) comprises a connecting means (10) adapted for removably fixing the water intrusion prevention system (1) on the turbine blade (100), further a collar sheet (20) disposed on the connecting means (10) and having a collar portion (22) extending away from the connecting means (10), the collar portion (22) constituting an upper collar sealing round about against an outer surface (101) of the turbine blade (100) if the water prevention system (1) is mounted on the turbine blade (100). In addition, the water intrusion prevention system (1) includes an umbrella sheet (30) disposed over the connecting means (10), the umbrella sheet (30) covering an upper side of the pressing means (10) and protruding laterally downwards away from the connecting means (10) round about the turbine blade (100) if the water prevention system (1) is mounted on the turbine blade (100). The umbrella sheet (30) sealingly adjoins the collar portion (22).

A composite nacelle cover (1;22) equipped with main machinery components (9a;9b;10) for a wind turbine has a composite wall (3,4,5,6,7) constituting a first load-carrying structure for at least one component of a first part (9a;9b) of the main machinery components. The length of the conventional load-carrying frame can be reduced and a lot of weight of the overall nacelle structure be eliminated.