Devices, systems, and methods of manufacturing wind turbine root attachment are provided. In various embodiments, an assembly for wind turbine root attachments includes a bushing, a core, and a filler. The bushing includes a body having cutouts extending from the proximal end to the distal end on either side of the bushing and a core cutout at the distal end. The bushing further includes an ear disposed at the proximal end of the bushing and within the first cutout. The core includes two wedges where the thick end of each wedge abut one another. The thin end of the proximal wedge is disposed within the core cutout and the core includes cutouts extending from the proximal end to the distal end on either side of the core. The filler is disposed within the cutout on the side of the assembly having the ear.

A present invention describes unique wind turbine assembly in a shape of closed hollow cylinder formed by two sets of three adjustable to positive and negative pitch horizontal blades supported instead of central shaft by three vertical cylindrical blades, which makes this turbine responsive to omni-directional wind. Proposed design concept provides with: Significant increase of turbine efficiency exceeding 60%, which after coupling this rotor with a generator of 60% efficiency leads to overall wind generator efficiency exceeding 40%. Low turbine inertia requiring moderate start up winds and reducing turbine vibrations. Noiseless turbine operation due to its rotation around vertical axis. Environmental friendliness as low operating speed does not generate strong turbulent air flow capable to challenge birds and bugs existence. No electronic control of blades angle of attack. Ease of manufacturing and maintaining together with their reduced cost.
Conducted analysis of the proposed configuration of the wind turbine shows no necessity of additional top support for a personal use wind generator, while requires one for more powerful (community) wind turbines. Proposed additionally supporting turbine tetrahedron beam frame resolves this issue allowing increase of power of such wind generators.

A centrifugal pump, and components thereof, operable at high speeds, is described under the present disclosure. A hard polymer sleeve can be applied to certain surfaces of a seal casing within the pump. If the sleeve is applied along surfaces near the center shaft, then the hard polymer will withstand the forces and pressures of the system. The hard polymer might not be used along the outer diameter, farther from the shaft, because velocities are higher the further out one goes. The current disclosure allows for the use of fluoropolymer in the lining sleeve. The benefits of fluoropolymer have been unavailable in high speed centrifugal pumps because the forces are too great on the periphery of the seal casing. However, the lower speeds along the interior, near the shaft, allow fluoropolymer to be used.

Devices, systems, and methods of manufacturing wind turbine root attachment are provided. In various embodiments, an assembly for wind turbine root attachments includes a bushing, a core, and a filler. The bushing includes a body having cutouts extending from the proximal end to the distal end on either side of the bushing and a core cutout at the distal end. The bushing further includes an ear disposed at the proximal end of the bushing and within the first cutout. The core includes two wedges where the thick end of each wedge abut one another. The thin end of the proximal wedge is disposed within the core cutout and the core includes cutouts extending from the proximal end to the distal end on either side of the core. The filler is disposed within the cutout on the side of the assembly having the ear.

Embodiments of the present disclosure generally relate to oxide layer compositions for turbine engine components and methods for depositing the oxide layer compositions. In one or more embodiments, a turbine engine component includes a superalloy substrate and a bond coat disposed over the superalloy substrate. The turbine engine component includes an oxide layer disposed over the bond coat, where the oxide layer includes aluminum oxide and a metal dopant. The turbine engine component includes a thermal barrier coating disposed over the oxide layer.

The invention relates to a device that generates clean, renewable energy by using gravity. The device generates energy by pumping water in a water well and has a plurality of methods for use. In the case of a single well, the well acts as a battery that stores energy and produces more energy than it stores. The well can store energy in multiple ways, it being possible to store energy during off-peak hours and pump energy during peak hours, benefitting from the cost difference, or to store the excess free energy produced from renewable energy, such as solar energy, wind energy or other types of renewable energy, and pump the energy when same is required. The second use is based on two or more devices of the invention that generate hydroelectrical energy by pumping and storing between the at least two devices, taking turns to charge and produce energy from one well to another. The well can be used in multiple sizes. Whenever the size of the well increases to accommodate the water and the well level rises, the amount of energy and the energy production period increase.

A wind turbine tower evacuation tool (10) is provided comprising an object end (20) for attachment to an object (500) or a person (555) and a roller end (30, 301, 302, 303) configured for connection to a surface of a wind turbine tower (110) by magnetic attraction. The roller end (30, 301, 302, 303) comprises at least one magnet body (33) arranged for rotation around a rotational axis of the roller end (30, 301, 302, 303). The wind turbine tower evacuation tool (10) further comprises a rope element (11) connecting the object end (20) to the roller end (30, 301, 302, 303).

A rotor blade assembly for a wind turbine includes at least one rotor blade having surfaces defining a pressure side, a suction side, a leading edge, and a trailing edge extending between a blade tip and a blade root. The surfaces are constructed of a polymeric composite material. The rotor blade assembly also includes a protection cap arranged adjacent to one or more of the surfaces of the rotor blade so as to cover at least a portion of the one or more surfaces of the rotor blade. The protection cap includes a body defining an overall length. Further, at least a first segment of the protection cap is constructed of a tungsten-based metal. Thus, the protection cap is configured to reduce erosion and resist corrosion of the rotor blade caused by particle or liquid impact.

A drag pump for pumping gas and a set of vacuum pumps including the drag pump are disclosed. The drag pump comprises: a rotor configured to rotate within a stator component and to drive a gas to be pumped from a gas inlet to a gas outlet; magnetic bearings for rotatably mounting the rotor within the pump; wherein at least a portion of the rotor and stator component configured to contact the gas to be pumped are configured for operation at temperatures above 130° C.

Devices, systems, and methods of manufacturing wind turbine root attachment are provided. In various embodiments, an assembly for wind turbine root attachments includes a bushing, a core, and a filler. The bushing includes a body having cutouts extending from the proximal end to the distal end on either side of the bushing and a core cutout at the distal end. The bushing further includes an ear disposed at the proximal end of the bushing and within the first cutout. The core includes two wedges where the thick end of each wedge abut one another. The thin end of the proximal wedge is disposed within the core cutout and the core includes cutouts extending from the proximal end to the distal end on either side of the core. The filler is disposed within the cutout on the side of the assembly having the ear.