The present invention provides a co-rotating scroll compressor that can inhibit leakage of lubricant supplied to a synchronous drive mechanism. A co-rotating scroll compressor includes a drive-side plate 20 placed between a driving scroll member 70 and a motor 5 at a predetermined distance from the driving scroll member 70 in a direction of a drive-side rotation axis CL1. The drive-side plate 20 includes a shaft portion 20b fixed to a driving shaft 6 of the motor 5 and a fixing portion 20a fixed to an outer periphery of the driving scroll member 70, and a synchronous drive mechanism made up of a needle bearing 32a and a pin 32b is placed between the drive-side plate 20 and driving scroll member 70.

Provided is an assembly structure of sun gear shaft and spline shaft of a gearbox for wind turbine. The assembly structure relates to the technical field of gearboxes for wind turbine and includes a sun gear shaft, a spline shaft, a mechanical pump drive gear, and a distance ring. The spline shaft is a hollow shaft. One end of the sun gear shaft is inserted into the spline shaft. The one end of the sun gear shaft inserted into the spline shaft is connected to the spline shaft through a spline pair. The mechanical pump drive gear is mounted at one end of the spline shaft. The inner diameter of the mechanical pump drive gear is less than the inner diameter of the spline shaft. The distance ring is disposed in the spline shaft. One end of the distance ring abuts against the inner side of the mechanical pump drive gear and is securely connected to the mechanical pump drive gear. Another end of the distance ring is spaced from the one end of the sun gear shaft in the spline shaft.

A downhole-type device includes an electric machine. The electric machine includes an electrical rotor configured to couple with a device to drive or be driven by the electric machine. An electrical stator surrounds the electric rotor. The electric stator includes a seal configured to isolate stator windings from an outside, downhole environment. An inner surface of the seal and an outer surface of the electric rotor define an annulus exposed to the outside environment. A bearing couples the electric rotor to the electric stator. A lubrication system is fluidically coupled to the downhole-type device. The lubrication system includes a topside pressure pump and a downhole-type distribution manifold configured to be used within a wellbore. The distribution manifold is fluidically connected to the topside pressure pump and the bearing to receive a flow of lubricant from the topside pressure pump.

A planetary gearing includes at least a first planetary stage and a second planetary stage and a double-walled pipe. The double-walled pipe has an inner pipe and an outer pipe and is provided with an outlet point in a central section. A bushing is arranged on the outlet point.

A device for processing of a liquid that includes a device-input for receiving the liquid to be processed at an input-pressure, a device-output for returning the processed liquid at an output-pressure, and a process chamber having a chamber-inlet and a chamber-outlet, and a feed-line for connecting the chamber-inlet to the device-input. The feed-line includes a multi-stage pump for increasing the pressure of the liquid from the input-pressure to a feed-pressure at the chamber-inlet, a discharge-line for connecting the chamber-outlet to the device-output which discharge-line includes back-pressure means adapted to maintain a discharge-pressure at the chamber-outlet upstream of the back-pressure means at an excess-pressure above the output-pressure, and to reduce the pressure of the liquid from the discharge-pressure to the output-pressure downstream of the back-pressure means. The pump in the feed-line is a first stage of a multiple-stage gear pump. The back-pressure means in the discharge-line is a second stage of the multiple-stage gear pump. The second stage is mechanically coupled to the first stage.

A lubrication system for a drive train of a wind turbine includes an oil reservoir having an outlet, a supply valve, a gearbox having an oil inlet and oil outlet, a drain valve and a siphon is provided. The oil reservoir is coupled to the supply valve and the supply valve is coupled to the inlet of the gearbox. The oil outlet of the gearbox is coupled to the drain valve and to a first end of the siphon. The supply valve is configured to open in an off-grid state of the wind turbine and the drain valve is configured to close in the off-grid state of the wind turbine. The siphon is configured to adjust an internal oil level in the gearbox in the off-grid state of the wind turbine.

A powertrain component (21, 22, 23) for a wind turbine (100) is provided, comprising a powertrain component housing (20) with at least one rotating part (49) and a dry sump 5 lubrication system for lubricating the rotating part (49). The lubrication system comprises a dry sump lubricant tank (51, 52, 53) and a pump (60) for pumping the lubricant from the tank (51, 52, 53) towards a lubricant release point, the lubricant release point being provided at a level above at least part of the rotating part (49) for receiving the lubricant from the tank (51, 52, 53) and allowing the lubricant to lubricate the rotating part (49). 10 The tank (51, 52, 53) is integrated in or directly attached to the powertrain component housing (20) at a level below the at least one rotating part (49).

A lubricant application device includes a base body configured to be mounted to an end surface of a gear. The base body includes a port configured to be connected to a source of lubricant and a holder for holding a lubricant applicator supported by the base body. A lubricant passage connects the port to the holder, and a lubricant applicator is mounted in the holder. The lubricant applicator is a coiled wire defining an internal passage for carrying the lubricant and may include a first length of coils with no axial spacing and a second length of coils that are axial spaced.

The invention relates to a method for improving reporting of operational data of a wind turbine during operation thereof; said method comprising the steps of: allowing an array of sensors to sense one or more specific parameter values of said wind turbine during operation thereof; in respect of one or more sensors, transmitting said parameter value being sensed to a control system; allowing said control system to register a critical event in case a sensed parameter value, or a combination of two or more sensed parameter values, represents a situation in which it is desired to shut down the wind turbine according to one or more predetermined criteria; allowing said control system to set a specific alarm at a point in time at which a specific critical event is registered; and allowing said control system to reset said specific alarm at a point in time at which the registration of the presence of said critical event ceases; wherein each specific alarm is associated with a corresponding alarm ID; wherein said alarms IDs are grouped into different sectors; each sector belongs to a specific part of the wind turbine or its installation or operation; wherein information from said control system relating to settings and resetting of one or more alarms corresponding to an individual alarm ID is being transmitted to a monitoring system which is configured for logging and storing such information; wherein said method furthermore comprises the steps of: i) in respect of one or more alarm IDs, allowing said monitoring system to register a time stamp in respect of each setting of said alarm ID and to register a time stamp in respect of each resetting of said alarm ID; ii) in respect of a specific sector, allowing said control system to count the amount of time at which no alarm IDs belonging to that specific sector is set, and to transfer information relating to such counting to said monitoring system; iii) in case the monitoring system detects that counting in step ii) has stopped in respect of a time range at which no alarms belonging to that specific sector is logged as being set, allow the monitoring system to register that the wind turbine in respect of said specific sector is not operating properly in a period of time corresponding to that range in time.

A lubrication system for a main bearing positioned around a main shaft of a wind turbine includes a seal ring positioned around the shaft adjacent to the bearing, at least one gear adjacent to the seal ring, a mechanical lubricant pump arranged to engage the at least one gear, and at least one lubricant for providing lubrication to the bearing. Thus, as the shaft rotates, the gear(s) drives the lubricant pump such that the pump continuously provides the lubricant to the bearing so long as the shaft is rotating.