Abstract: Disclosed is a floating wind turbine including a floating platform and a turbomachine resting on the platform, the turbomachine including: —first and second transverse flow turbines disposed symmetrically with respect to a first plane, each turbine including blades including central parts that are extended at the ends by arms, connected to shaft elements by pivoting connections, each turbine also including upper and lower fairings; and—a structure for holding the turbines including a vertical median pylon between the turbines and upstream of a second plane containing the axes of rotation of the blades of the turbines.

Abstract: A perpendicular axis turbine having at least two blades, wherein the blades are longitudinally offset with respect to one another, reducing the effects of blade-vortex interaction and providing increased power generation. In one embodiment, the blades are longitudinally offset such that the attachment point of one blade is halfway between the attachment points for the other blade.

Abstract: A wind turbine assembly comprising a cantilever support, a rotor assembly having a rotor hub rotatably coupled to the cantilever support, and a plurality of rotors radially arranged about and coupled to the rotor hub is provided. Each rotor includes a rotor arm defining an arm axis, a blade element, and an adjustment mechanism coupled between the rotor arm and the blade element. The blade element has a concave face portion and defines a target axis. The adjustment mechanism is movable between a first rake angle defined between the first arm axis and the target axis, and a second rake angle to position each of the blade elements relative to each other.

Abstract: An apparatus and system for compensating for various load situations in a turbine includes the use of one or more deployable devices configured to extend an air deflector outwardly from a surface of a rotor blade. The air deflector may subsequently be retracted into the rotor blade once the load falls below a certain threshold. Mechanisms for extending and retracting the air deflector may include pneumatic, hydraulic and/or electromechanical devices. Air deflectors are generally configured to modify the air flow around the rotor blade to increase or decrease power generation, or reduce loads so that the risk of potential damage to components of the wind turbine is minimized. Deflectors may be positioned at various chordwise stations including leading-edge, mid-chord, and trailing-edge locations on the upper and lower surfaces at spanwise positions. Accordingly, a plurality of devices can be actuated to aerodynamically control rotor performance and loads based on wind conditions.

Abstract: Summarizing, the present invention relates to a control system for a wind turbine including—a feed forward controller having a rotor effective wind speed of the wind turbine as an input parameter and having a plurality of output parameters—a feedback controller wherein an input parameter is based on a rotor speed or a generator speed of the wind turbine and having at least one output parameter and wherein o one output parameter of the feed forward controller is provided to the feedback controller as an input parameter and o another output parameter of the feed forward controller is used as a feed-forward control parameter for controlling the wind turbine and o one output parameter of the feedback controller is used as a feed-back control parameter for controlling the wind turbine, as well as a wind turbine and a control method.

Abstract: Various embodiments of the present disclosure provide wind harvesting systems and methods using crosswind power kites and methods for launching crosswind power kites into wing-borne flight, for generating electricity through such flights, and for landing or retrieving such crosswind power kites.

Abstract: An assembly of two structural parts of a wind turbine wherein the structural parts are to be connected in a flange-to-flange connection, the assembly further comprising a wind turbine installation system for guiding two structural parts of a wind turbine during installation, the system comprising: a guide system for guiding the engagement of the first structural part to the second structural part, the guide system comprising: a guide post coupled to the first structural part; a guide receiver coupled to the second structural part and configured to receive the guide post therein; and a shock absorber arranged to dampen shock loads from the engagement of the guide post with the guide receiver.

Abstract: Fixtures for supporting wind turbine blades that have a root end flange, which may be interconnected with twistlock fasteners and stacked for use in plural modes of transportation, including ocean transportation. A root fixture includes a bearing that rotatably engages a mounting flange adapter that is coupled to the blade's root flange. A bearing pivot is coupled to the bearing to allow the blade to pivot during loading, unloading and transport. A tip stand assembly is provided to engage the blade along a tip end support region.

Abstract: An abnormality monitoring apparatus for a wind farm includes: a parameter obtaining part configured to obtain a power generation parameter related to power generation of the wind turbine power generating apparatus and a strain parameter measured by a sensor mounted to a wind turbine blade of the wind turbine power generating apparatus; a member candidate extraction part configured to extract at least two of the wind turbine power generating apparatuses in which a correlation between the power generation parameters of the at least two wind turbine power generating apparatuses is not smaller than a first predetermined value, and a correlation between the strain parameters of the at least two wind turbine power generating apparatuses is not smaller than a second predetermined value; a monitoring group setting part configured to set at least two of the wind turbine power generating apparatuses; and a group monitoring part configured to perform abnormality monitoring.

Abstract: A wind turbine blade includes: a blade body extending from a blade root along a blade longitudinal direction toward a blade tip; and a metal strip provided to cover at least a leading edge at the blade tip side of the blade body so as to suppress erosion at the leading edge of the blade body.

Abstract: The disclosure relates to a carbon blade for a wind turbine with multiple down conductors, and more particularly, to a carbon blade for a wind turbine with multiple down conductors that includes multiple down conductors disposed thereon to reduce or prevent a potential difference between a plurality of points to be formed thereon from being generated.

Abstract: A self-supporting nacelle structure for wind turbines, adapted to house a transmission assembly, includes a first shaft connected to a wind turbine rotor hub and to a gearbox, and a second shaft connected to the gearbox and to a generator. The nacelle structure further includes a tubular outer shell defining delimiting a space for housing the transmission assembly, a vertical tubular extension with an upper end edge connected to the outer shell and a lower end edge secured to a tower, an inner frame secured to the outer shell and having a plurality of transverse ribs and a plurality of longitudinal ribs joining the transverse ribs, each transverse rib extending in a closed path, completely enclosing the transmission assembly. The outer shell has a portion with a closed cross section, with at least one transverse rib secured thereto to provide the structure with high torsional and flexural stiffness.

Abstract: The present invention is a renewable energy utilization engine power plant comprising; a solar radiant energy collecting system, wherein the solar radiant heat collecting system comprises; a focusing apparatus for collecting solar radiant energy, and a light guide for guiding the solar radiant energy collected by the focusing apparatus to a heating chamber; a biomass processing system, wherein the biomass processing system generates thermal energy from the conversion of biomass material; a combustible fluid processing system, wherein the combustible fluid processing system generates thermal energy from the combustion of the combustible fluid within the heating chamber; and a closed-cycle thermodynamic based engine driven by the collection of the solar radiant energy and thermal energy, wherein the mechanical power generated by the closed-cycle thermodynamic based engine is converted to electrical energy.

Abstract: Disclosed are a thermoacoustic engine with high conversion efficiency from heat energy to acoustic energy and a designing method for the thermoacoustic engine. A stack of the thermoacoustic engine has a plurality of flow passages extending through a thermoacoustic piping section. A hot heat exchanger is coupled to one end in a longitudinal direction of the stack. A cold heat exchanger is coupled to the other end in the longitudinal direction of the stack. And a length in the longitudinal direction of the hot heat exchanger is greater than a length in the longitudinal direction of the stack, and is greater than a length in the longitudinal direction of the cold heat exchanger.

Abstract: An offshore power generation structure comprising a submerged portion having a first deck portion comprising an integral multi-stage evaporator system, a second deck portion comprising an integral multi-stage condensing system, a third deck portion housing power generation equipment, cold water pipe; and a cold water pipe connection.

Abstract: The inflating device has a body, a large cylinder, a small cylinder, a handle, a switching mechanism, and a switching device. The large cylinder is mounted moveably in the body and has an upper input gap, an inner bottom base, and a bottom base. The upper input gap is defined between an outer surface of a bottom end of the large cylinder and an inner surface of a first chamber of the body. The bottom base is connected with the large cylinder, is located below the inner bottom base, and has a first annular holding recess and a first O-ring. The small cylinder is mounted moveably in a second chamber of the large cylinder and has a piston base. The handle is mounted on the top end of the small cylinder. The switching mechanism is mounted on the top end of the large cylinder.

Abstract: A pump monitoring system includes a pump with a pump body and a releasable head. An RFID transponder is secured to the pump head and an RFID reader in communication with a processor is provided in the pump body. The transponder receives and stores information relating to operation of the pump head. The reader reads information from the transponder and transmits further information to the transponder. The processor interprets the information from the transponder and controls operation of the pump in response.

Abstract: An infusion device (3) comprises a housing element (30) having a receptacle (301) for receiving a pump module (1), and a pump actuation mechanism (2) having a wobbling device (20) arranged on the housing element (30) and a drive shaft (21) being rotatable about a rotational axis (A). The wobbling device (20) is actuatable, by rotating the drive shaft (21) about the rotational axis (A), to perform a tumbling motion with respect to the receptacle (300) for acting onto the pump module (1) received in the receptacle (300) in order to pump a fluid through the pump module (1). Herein, the wobbling device (20) is displaceable along at least one direction (X, Y) transverse to the rotational axis (A) with respect to the receptacle (300).

Abstract: A long-stroke pumping unit includes a tower, a counterweight assembly movable along the tower, and a crown mounted atop the tower. A sprocket is supported by the crown and rotatable relative thereto. The counterweight is coupled to a belt. The pumping unit further includes a motor having a stator mounted to the crown and a rotor torsionally connected to the sprocket. A sensor is used to detect a position of the counterweight assembly. The pumping unit may include a dynamic control system for controlling a speed of a motor.

Abstract: The present invention relates to a suction pulsation reducing device of a swash plate type compressor, and more particularly, to a suction pulsation reduction apparatus provided on a suction channel formed in a rear head of a swash plate type compressor, in which a moving range of a core portion is limited and all parts to be mounted on a suction channel are integrally formed in a case.

Abstract: A pump monitoring and notification system for a hydraulic pump includes an accelerometer and a controller. The accelerometer is associated with the hydraulic pump and is disposed relative to the hydraulic pump to generate acceleration data indicative of acceleration of the hydraulic pump. The controller is configured to access a fault threshold, access a time threshold, and determine an acceleration of the accelerometer based upon the acceleration data from the accelerometer. The controller is further configured to determine an RMS average of the acceleration of the accelerometer based upon the acceleration of the hydraulic pump, compare the RMS average of the acceleration of the accelerometer to the fault threshold, and generate an alert signal when the RMS average of the acceleration of the accelerometer exceeds the fault threshold for a time period exceeding the time threshold.

Abstract: A scroll compressor includes scroll members that are made of austempered grey iron in whole or in part. The austempering process can increases fatigue strength and toughness of a grey iron while maintaining its good machinability and vibration damping characteristics. Use of austempered grey iron scroll members allows the scroll compressor to improve its capacity, efficiency, and durability.

Abstract: A scroll compressor includes a compression mechanism having fixed and movable scrolls forming a compression chamber, a motor to drive the movable scroll, a casing accommodating the compression mechanism and the motor, a housing accommodated inside the casing, a floating member supported by the housing, a first seal member, and first and second flow passages. An inside of the casing is partitioned into first and second spaces. The floater member can be pushed toward the movable scroll by pressure in a back-pressure space formed between the floating member and the housing. The first seal partitions the back-pressure space into first and second chambers. The first flow passage guides the refrigerant in the middle of compression in the compression mechanism to the first chamber. The second guides the refrigerant discharged from the compression mechanism to the second chamber.

Abstract: A compressor system includes a compressor having a rotor; a bearing supporting the rotor, wherein the bearing is disposed in a bearing cavity; and wherein the bearing has a near frictionless coating; and a purge gas system in fluid communication with the bearing cavity and constructed to purge air from the bearing cavity and supply the bearing cavity with the purge gas during operation of the compressor. The purge gas can be nitrogen and the near frictionless coating can be a near-frictionless diamond-like carbon coating.

Abstract: Disclosed is a liquid-ring vacuum pump that enables a worker to inspect components provided in a main body from the outside using a see-through device without disassembling the main body and to easily remove foreign matter from the main body merely by demounting the see-through device from the main body. The liquid-ring vacuum pump includes a main body, which accommodates a shaft centrally mounted therein to receive rotational force from a driving motor and has a mounting hole formed therein so as to communicate with the interior of the main body, a rotor rotating together with the shaft inside the main body, a head unit coupled to at least one side of the main body, and a see-through device, which is detachably mounted in the mounting hole and includes a see-through window member to allow the interior of the main body to be inspected with the naked eye.

Abstract: Sealing in rotary positive displacement machines based on trochoidal geometry that comprise a helical rotor that undergoes planetary motion within a helical stator is described. Seals can be mounted on the rotor, the stator, or both. The rotor can have a hypotrochoidal cross-section, with the corresponding stator cavity profile being the outer envelope of the rotor as it undergoes planetary motion, or the stator cavity can have an epitrochoidal cross-section with the corresponding rotor profile being the inner envelope of the trochoid as it undergoes planetary motion. In some embodiments, the geometry is offset in a manner that provides advantages with respect to sealing in the rotary machine. In multi-stage embodiments, the rotor-stator geometry remains substantially constant or varies along the axis of the rotary machine.

Abstract: Variable volume ratio compressors may be controlled using a switching parameter based on compressor speed and suction density to improve the matching of compressor volume ratio to desired discharge conditions. Delay periods may be implemented in the determination of when to change volume ratio to control the frequency of changes to the volume ratio. The switching parameter may be a product of the compressor speed and suction density. The volume ratio of the compressor may be controlled by switching valves directing pressure to a piston of a variable volume ratio system of the compressor.

Abstract: An electric motor communication system for use with a fluid moving system is provided. The electric motor communication system includes an electric motor including a wireless communication device configured to transmit and receive wireless signals, and a processing device coupled to the wireless communication device and configured to control the electric motor based at least in part on wireless signals received at the wireless communication device. The electric motor communication system further includes at least one external device configured to communicate wirelessly with the electric motor.

Abstract: A hydraulic pumping system for pumping a flow of aqueous liquid, for HVAC and potable water systems, through a plurality of hydraulic pump assemblies and mating branching feeder pipes extending between a main inlet pipe and a main outlet pipe for outputting the total flow of water, each of said pump assemblies in operative association with a mating feeder pipe to control aqueous liquid flow through said associated feeder pipe, wherein each of the hydraulic pump assemblies comprises an electric motor, mechanically coupled to a centrifugal pump and a variable frequency drive (VFD) electrically coupled to the motor. A controller is electrically coupled via a communication channel to the VFD of each of the hydraulic pump assemblies, the controller comprising a programmable device programmed to control the speed of each of the motors via the connected VFD.

Abstract: The centrifugal compressor includes an impeller configured to feed a fluid suctioned from one side to an outside in a radial direction by rotating about an axis, and a flow path provided between the impellers adjacent to each other in the direction of an axis and configured to guide the fluid discharged from an impeller on the upstream side to an impeller on the downstream side. The flow path includes a diffuser flow path, a return bend portion, and a guide flow path. Further, the centrifugal compressor further includes return vanes extending across the return bend portion and the guide flow path in the flow path and provided in intervals in a circumferential direction, and the radial positions of the leading edges of the return vanes in the flow paths adjacent in the direction of the axis are different from each other.

Abstract: Turbomolecular stator components include an array of stator blades, arranged to interact with pumped gases. Spacers are used to locate the stator blade array and couple the stator blade array to a housing. The stator components include an outer section that is resilient and arranged to cooperate with the spacers.

Abstract: A fan motor includes a motor including a stationary portion and a rotating portion arranged to rotate about a rotation axis extending in a vertical direction; an impeller including a plurality of blades, and arranged to rotate together with the rotating portion; a housing arranged to house the motor and the impeller therein; and a plurality of lead wires each of which is connected to the motor and is arranged to extend radially outward.

Abstract: A fan apparatus comprises a frame, a central shaft mounted to the frame, and three or more suspension elements formed from a flexible material. Each respective suspension element has a first end, a second end and an adjustment mechanism operable to change a length of the suspension element. The first ends are attached to the frame and the second ends are attached to a ceiling structure to suspend the apparatus. The frame height can be adjusted by changing the lengths of all of the suspension elements by a same amount and the orientation can be adjusted by changing the lengths of the suspension element by different amounts. A blade assembly with central hub and plurality of fan blades is mounted on the shaft, a housing surrounding the blade assembly is mounted on the frame, and an electric motor is operably connected to the central hub rotate the blade assembly.

Abstract: An exhaust gas turbocharger for an internal combustion engine, particularly of a motor vehicle, is disclosed. The exhaust gas turbocharger includes a bearing housing having at least one through hole for a rotor of the exhaust gas turbocharger for supporting the rotor. At least one housing cover is connected to the bearing housing such that the through hole is sealed at least partially in the axial direction of the exhaust gas turbocharger. The housing cover is connected to the bearing housing by exactly one threaded element having an external thread, which threaded element is screwed to the bearing housing by its external thread and a corresponding internal thread of the bearing housing.

Abstract: A free-tipped axial fan assembly features a shroud barrel comprising an inlet, the radius of said inlet at its upstream end being greater than the radius of said inlet at its downstream end. An angle, in a plane including the fan axis, between the surface of said inlet and the direction of the fan axis varies non-monotonically with respect to a surface coordinate which increases with distance along the surface of the inlet.

Abstract: A turbocharger includes a turbine wheel, a hub-side wall surface and a shroud-side wall surface which face each other and which together form a flow path for exhaust gas to flow into the turbine wheel, and a plurality of nozzle vanes each of which is rotatably disposed on one of the hub-side wall surface or the shroud-side wall surface in the flow path. A throat formed between adjacent two of the plurality of nozzle vanes has a narrower throat width at a position of a first end surface of each of the adjacent two nozzle vanes facing the other of the hub-side wall surface or the shroud-side wall surface than a throat width at a middle position between the first end surface and a second end surface on an opposite side to the first end surface of each of the adjacent two nozzle vanes.

Abstract: Disclosed is an air cleaner having an improved boss for increasing rigidity. The air cleaner includes a main body, a blowing fan provided inside the main body, a motor for driving the blowing fan and a boss provided to connect the blowing fan and the motor. The boss includes a first metallic member connected to the blowing fan, a second metallic member connected to the motor, and an elastic member provided between the first metallic member and the second metallic member. At least one of the first metallic member and the second metallic member includes a contact increasing portion configured to increase a contact area with the elastic member.

Abstract: An air flow controller for an air cleaner and an air cleaner are provided. The air flow controller may include a fan, and a housing, the fan being provided in the housing and the housing being movable from an initial horizontal position in which the air flow controller directs air flow in a vertical direction to an inclined position in which the air flow controller directs air flow in a diagonal direction.

Abstract: There is provided a blower capable of maintaining output performance and adjusting a thrust acting in an axial direction of an impeller while reducing the number of parts. A flow path is formed in an intake port provided in a central part in the axial direction of the first housing and a blowing passage connecting the intake port and the discharge port as top surface portions of a housing-side shroud connecting to the intake port and an impeller-side shroud formed in the impeller which face the blowing passage are adjacent to each other in the radial direction.

Abstract: There is disclosed an industrial fan housing assembly, comprising: a plurality of scroll-liner sections configured to be assembled together to form a midsection of the industrial fan housing assembly, each scroll-liner section including a liner; wherein, each scroll-liner section includes side flanges to assemble the section to first and second fan housing scroll sideplates on either side. In an embodiment, at least two of the plurality of scroll-liner sections are identical and interchangeable, thereby allowing the identical and interchangeable sections to be assembled in one of a plurality of positions. Advantageously, the scroll-liner sections may be installed without welding or cutting, and may be individually removed for servicing or replaced when the lining is worn. The cost for operating and servicing and the fan housing assembly is significantly reduced.

Abstract: An intake device for a pump includes an inlet section extending in a first direction for guiding a fluid, an outlet section for delivering the fluid to an inlet of the pump, the outlet section extending in a second direction perpendicular to the first direction, and a diverting section for diverting the fluid from the first to the second direction, the diverting section connecting the inlet and outlet sections, and having a bottom wall opposing the an outlet opening and a back wall opposing an inlet opening, the inlet section tapering towards the diverting section to decrease a cross sectional area of the inlet section, the diverting section includes a splitter member arranged on the bottom wall that tapers in the second direction towards the outlet opening, and the outlet section includes an essentially bell shaped reducing part for decreasing a cross sectional area of the outlet section.

Abstract: A self-cooling electric submersible pump having an integrated cooling system is provided. The cooling system is configured to cool and lubricate the electric motor section of the pump by expanding a compressed multi-component coolant fluid through flow channels within the motor. The coolant fluid contains a first fluid having a boiling point of at least 230° C. and a second fluid having a boiling point of less than 150° C. During pump operation the first fluid acts as a largely incompressible liquid and the second fluid behaves as a compressible gas. A compressor compresses the second fluid in the presence of the first fluid to produce a hot compressed coolant fluid from which heat is transferred to a production fluid being processed by the pump. The compressed coolant fluid is expanded through an orifice and into the motor flow channels, returning thereafter to the compressor.

Abstract: An impeller for use in a centrifugal blower, the impeller includes a hub defining an axis of rotation for the impeller; a plurality of inclined blades, the plurality of inclined blades extending away from the hub; and a plurality of reverse inclined blades, the plurality of reverse inclined blades extending away from the hub. Each of the plurality of inclined blades are joined to an adjacent inclined blade at least in part by a reverse inclined blade.

Abstract: A device for evacuating a film chamber using a pump system that comprises at least two vacuum pumps, designed to evacuate the film chamber alternately. A suction capacity of the first vacuum pump is greater than that of the second vacuum pump and the final pressure achievable by the first vacuum pump is less than that of the second vacuum pump.

Abstract: A hydraulic component includes a piston and a cylinder with a piston receiving space in which the piston is displaceably arranged while defining a chamber, via which a pressure may be applied to a first end face of the piston, from a control chamber, via which pressure may be applied to a second end face of the piston which faces away from the first end face. A first hydraulic line and a second hydraulic line open into the chamber and a control line, which branches off from the first hydraulic line, opens into the control chamber. Due to the respective pressure ratio between the pressure in the chamber and the control chamber, the piston is displaceable from a closed position, in which the first and second hydraulic lines are fluidly decoupled, into an open position, in which the first and second hydraulic lines are fluidly connected, and vice versa.

Abstract: A hydraulic drive device for a cargo vehicle includes a hydraulic cylinder supplying and discharging of hydraulic oil, an operation member that operates the hydraulic cylinder, a hydraulic pump, a lowering oil path connecting the hydraulic cylinder and the hydraulic pump, an operation valve disposed in the lowering oil path, a bypass oil path that branches off from the lowering oil path, a bypass flow rate control valve disposed in the bypass oil path and that controls a bypass flow rate, and a resistance element that is disposed closer to the hydraulic cylinder than the operation valve in the lowering oil path and that increases a fluid resistance. A pilot flow path of the bypass flow rate control valve is connected to a part of the lowering oil path between the hydraulic cylinder and the resistance element.

Abstract: A hydraulic control system for a material handling vehicle including one or more hydraulic actuators configured to raise and lower a fork assembly attached to a mast of the material handling vehicle is provided. The hydraulic control system is configured to provide multi-stage pressure relief based on a height of the fork assembly.

Abstract: An apparatus for outputting a solid material entrained in a fluid, the apparatus comprising a receptacle for receiving the solid material, an input for the fluid, an output for solid material, an auger for transporting the solid material from the receptacle to the output, a motor for driving the auger, wherein the motor comprises one or more cylinders each comprising a piston, a second input connected to the input so as to feed part of the fluid to the cylinders, where a cross section of a piston is at least 700 mm2 or wherein a drive transforming the reciprocating movement of each piston, relative to the cylinder, to rotation of the auger around the first axis, is configured to rotate the auger at least 20 degrees when a cylinder completes a cycle.

Abstract: Disclosed herein is a cover for a rod end of an actuator. The cover comprises a mounting collar for surrounding and mounting to a portion of the rod end. The collar is deformable such that it may be mounted over a rod eye mounted to the rod end. The cover further comprises a shield extending from the collar and shaped such that when attached to the rod end the shield shields a portion of rod end to prevent fluid or foreign object ingress to the rod end. Also disclosed is a rod end assembly comprising a rod end and a cover mounted thereto and a method of assembling and retro-fitting a rod end and cover.

Abstract: A spacer assembly for restricting actuation of a hydraulic cylinder. The spacer assembly comprises a support bracket configured to be secured to the hydraulic cylinder. The spacer assembly additionally comprises a plurality of shims supported by the support bracket, whereby each of the shims is configured to be shifted between an unengaged position and an engaged position. When the shims are in the engaged position the shims are configured to restrict actuation of the hydraulic cylinder. The spacer assembly further comprises a shifting assembly configured to permit a group of at least two shims to be simultaneously shifted between the unengaged position and the engaged position.