Provided is a grease collection arrangement for collecting waste grease from a grease lubricated rotor blade pitch bearing of a wind turbine, whereby the grease collection arrangement includes at least one waste grease collector and multiple extraction tubes, wherein each one of the multiple extraction tubes is connected to the at least one waste grease collector and the multiple extraction tubes are configured to being connected to multiple grease outlets of the rotor blade pitch bearing, whereby the grease collection arrangement is configured such that the waste grease from the rotor blade pitch bearing can flow into the at least one waste grease collector by gravity and centrifugal forces.

A port insert for a marine lower unit includes a hollow body having a first end and a second end, the second end having a first exterior thread configured to couple with a cap and one or more apertures formed in the body adjacent the first end. The port insert also includes a spring mechanism disposed within the hollow body. The port insert further includes a sealing member coupled to the spring mechanism, the sealing member being biased toward the second end in a non-use state.

A port insert for a marine lower unit includes a hollow body having a first end and a second end, the second end having a first exterior thread configured to couple with a cap and one or more apertures formed in the body adjacent the first end. The port insert also includes a spring mechanism disposed within the hollow body. The port insert further includes a sealing member coupled to the spring mechanism, the sealing member being biased toward the second end in a non-use state.

The pumping device includes a barrel, a cover, a pumping mechanism, a positioning ring, and plural posts. The barrel has plural first positioning portions extending upward near a bottom thereof. The cover is disposed on the barrel to selectively close the barrel. The pumping mechanism is disposed on the cover for pumping liquid in the receiving space outward or pumping liquid outside into the receiving space. The positioning ring is detachably combined by two semi-ring bodies and is sleeved onto the cover and the barrel to position the cover on the barrel. The positioning ring has plural second positioning portions. Each of the posts connects the positioning ring and the bottom of the barrel therebetween. Each post is detachably connected to one of the first positioning portions and one of the second positioning portions therebetween so that the two semi-ring bodies are unable to separate freely.

The pumping device includes a barrel, a cover, a pumping mechanism, a positioning ring, and plural posts. The barrel has plural first positioning portions extending upward near a bottom thereof. The cover is disposed on the barrel to selectively close the barrel. The pumping mechanism is disposed on the cover for pumping liquid in the receiving space outward or pumping liquid outside into the receiving space. The positioning ring is detachably combined by two semi-ring bodies and is sleeved onto the cover and the barrel to position the cover on the barrel. The positioning ring has plural second positioning portions. Each of the posts connects the positioning ring and the bottom of the barrel therebetween. Each post is detachably connected to one of the first positioning portions and one of the second positioning portions therebetween so that the two semi-ring bodies are unable to separate freely.

A seal system for a bearing chamber (22) of a turbomachine includes the baffle element (70) encircling the axis (25) of the machine. The baffle element is formed with front surface including both a recess (73) which defines a circumferentially-extending oil-receiving channel (74), and an oil-deflecting surface (78) on a gutter (77). The channel decreases in cross-sectional area close to the oil-deflecting surface, and a circular line which is within the channel distant from the gutter, intersects with the oil-deflection surface. This forces the oil to change direction at the gutter, and urges the oil radially outward. Thus, a high rotational velocity of the body of oil may be maintained, whilst improving the drainage efficiency of the seal system at the gutter.

A method for lubricating a sealed bearing providing a first ring and a second ring capable of rotating concentrically relative to one another, and seals delimiting together with the first and second rings a sealed chamber. The method includes a removing a first predetermined quantity of lubricant from the sealed chamber until the pressure in the sealed chamber reaches a first pressure value, and then injecting a second predetermined quantity of lubricant in the sealed chamber until the pressure in the sealed chamber reaches a second pressure value, the first pressure value and the second pressure value being determined so that the pressure inside the sealed chamber remains within a predetermined interval, the boundaries of the interval being determined according to characteristics of the seals so that the sealed chamber remains waterproof to the lubricant when lubricant is removed from or injected in the sealed chamber.

Provided is a grease collection arrangement for collecting waste grease from a bearing, including a plurality of grease extraction valves, wherein each grease extraction valve is connected to a grease outlet of the bearing, an extraction line extending from each grease extraction valve to a common extraction line, a vacuum apparatus configured to create an under-pressure in the extraction lines, and a control module configured to selectively open and close a grease extraction valve. Also provided is a method of collecting waste grease from a bearing lubrication circuit using the grease collection arrangement.

Provided is a grease collection arrangement for collecting waste grease from a bearing, including a plurality of grease extraction valves, wherein each grease extraction valve is connected to a grease outlet of the bearing, an extraction line extending from each grease extraction valve to a common extraction line, a vacuum apparatus configured to create an under-pressure in the extraction lines, and a control module configured to selectively open and close a grease extraction valve. Also provided is a method of collecting waste grease from a bearing lubrication circuit using the grease collection arrangement.

A containment berm formed of a flexible, substantially impermeable polymer material defining a ground section with a plurality of sidewalls extending upward from the ground section. A plurality of hinges are positioned on an interior of the containment berm, with the hinges having first and second aims rotating on a pin, the first arm engaging a first sleeve on one of either the ground section or a sidewall, and the second arm engaging a second sleeve on the other of the ground section or the sidewall. The second sleeve is configured to allow the hinge to slide far enough away from the first sleeve to allow the first arm to disengage from the first sleeve.