Provided is a fluid film bearing, for a rotor hub in a wind turbine, including a first and second part rotatably connected to each other, wherein the first part forms a first annular sliding surface that extends in the circumferential direction of the bearing along the first part, wherein the second part includes a support structure and first pads distributed along the circumference of the support structure, wherein a respective pad sliding surface of each of the first pads or of a first subgroup of the first pads supports the first annular sliding surface, wherein each first pad includes a mounting section that is mounted to a backside of the support structure, a contact section that is either forming the respective pad sliding surface or carrying a coating that forms the respective pad sliding surface and a connecting section that connects the contact section with the mounting section.

A bearing lubrication structure for a wind power gearbox includes a housing, a bearing, a planet carrier, and an oil scraper assembly. The planet carrier is rotatably disposed on the housing through the bearing. A first end face of the planet carrier and a second end face of the housing form a receiving chamber. The oil scraper assembly is disposed on the second end face and is located in the receiving chamber. The oil scraper assembly includes an oil scraper member. The oil scraper member is configured to, when the planet carrier rotates, collect oil from the first end face and make the oil flow into the bearing.

A sealing system for a wind turbine comprises first component and a second component positioned proximate the first component and movable relative thereto. An absorbent element is secured to the first component and comprises an oil-absorbent material. A contact member is secured to the absorbent element and comprises a non-absorbent material. The contact member abuts the second component so that lubricant leaking from between the first and second components is collected by the absorbent element. A method of maintain a clean environment in a wind turbine with such a sealing system is also disclosed.

A bearing arrangement for a wind turbine including a bearing housing and a drive shaft, whereby the drive shaft is arranged within the bearing housing in an axial direction along a longitudinal axis of the bearing housing, the bearing arrangement further comprising a downwind bearing and an upwind bearing as radial fluid bearings, whereby the downwind bearing and the upwind bearing are arranged between the bearing housing and the drive shaft is provided. The downwind bearing and/or the upwind bearing includes a lubricant flooded chamber, in which multiple radial bearing pads are arranged about the drive shaft, whereby the lubricant flooded chamber is sealed against the drive shaft, an internal space of the bearing housing and an outside of the bearing housing is also provided.

This invention relates to a voluminous wind/wave turbine system, the turbine system has two wind/wave subsystems and is based on a unique volume process and optimized blades defining two power zones to harness wind and wave energy together or separately beyond the Betz limit, the vortical wind turbine subsystem has a pair of a front and back vortical blades to generate more power with satellite generators, the wave subsystem is a breakthrough for commercial applications and has a robust float vessel with toroid or polygonal pipes structure and multiple hinge mechanisms to hold multiple wave turbines against violent wave, the wave turbine has only a conversion to produce electricity constantly 24/7 with 360 degree freedom, the both subsystems are based on a shaft-less twin rotor turbomachinery and represent a new era of reliable and renewable energy at an unprecedented level of efficiency and the reliability.

Provided is a bearing arrangement for a wind turbine including a bearing housing and a drive shaft, whereby the drive shaft is arranged within the bearing housing in an axial direction along a longitudinal axis of the bearing housing. The bearing arrangement further includes a downwind bearing and an upwind bearing, whereby the downwind bearing and the upwind bearing are arranged between the bearing housing and the drive shaft. The bearing housing includes a drain outlet arranged in a bottom part of the bearing housing, the bottom part of the bearing housing being located underneath the drive shaft in a direction of gravity, whereby at least one inner side of the bottom part of the bearing housing is arranged so as to form a funnel, whereby the drain outlet is an opening of the formed funnel.

A sliding bearing arrangement for a wind turbine and a method to service the bearing is provided. A sliding bearing arrangement of a wind turbine includes a first shaft and a second shaft, whereby a first radial sliding bearing is arranged between the shafts. The first radial sliding bearing includes bearing pads. The first shaft includes a collar, whereby the collar is arranged mainly perpendicular to the axis of rotation, and radially overlaps at least a part of a radial surface of the second shaft. The collar includes an opening to exchange the bearing pads of the first radial sliding bearing of the bearing arrangement.

A displacement sensor detects a displacement of a main shaft, thereby detecting a relative displacement between an inner race and an outer race of a bearing. A data processor carries out an abnormality diagnosis for the bearing based on a detected value of the displacement sensor. The data processor carries out an abnormality diagnosis based on a difference between the detected value of the displacement sensor under a first axial load condition for the bearing and the detected value of the displacement sensor under a second axial load condition different from the first axial load condition. Thereby, an abnormality diagnosing apparatus for a rolling bearing is provided, by which a highly accurate abnoiiiiality diagnosis can be implemented even if installation states of a displacement sensor and an object to be measured are changed due to maintenance or repair.

The present invention relates to wind turbine generator (WTG) with a ball bearing (31) supporting a rotating shaft. A suction provider (35), e.g. a rotating disc, is provided next to the ball bearing. An opposite grease reservoir (41) supplies the ball bearing with grease during rotational operation, the grease reservoir further having a shape so that a point (43) of the at least one grease reservoir being closest to the rotating shaft and a grease inlet of the ball bearing are adjoining. The suction provider creates a pressure which is slightly lower than atmospheric pressure, thereby creating a suction of grease (47) through the ball bearing from the grease reservoir, which aids in distributing the grease in the ball bearing. The invention provides an improved ball bearing having an extended lifetime of up to e.g. 7-10 years.

A turbocharger includes ball bearings each including an inner ring and an inner ring mounted to a shaft, and an outer ring and an outer ring provided so as to be relatively rotatable in a bearing hole, and damper portions formed in at least one of outer peripheral surfaces of the outer ring and the outer ring and opposed surfaces of inner peripheral surface of the bearing hole opposed to the outer peripheral surfaces of the outer ring and the outer ring.