1930results about "Mechanical power transmission" patented technology

The invention provides a self-regulation type wide-speed-range wind energy collection device. The self-regulation type wide-speed-range wind energy collection device comprises a mounting base, a driving shaft, a power generation mechanism and a shifting mechanism. The mounting base is provided with a containing cavity. The driving shaft is rotationally arranged on the mounting base and penetrates through the containing cavity, and the end, extending out of the mounting base, of the driving shaft is connected with fan blades. The multiple power generation mechanisms are arranged in the containing cavity, and the power generation mechanisms are arranged in the axis direction of the driving shaft at intervals. The number of the shifting mechanisms is multiple, and all the shifting mechanisms are arranged in the containing cavity and fixedly connected with the driving shaft. The stirring mechanisms are in one-to-one correspondence with the power generation mechanisms, and each stirring mechanism is provided with a stirring part. And the shifting part in each shifting mechanism can be in power connection with the corresponding power generation mechanism after the driving shaft reaches the corresponding rotating speed so as to drive the power generation mechanism to generate power. The self-regulation type wide-speed-range wind energy collecting device can adapt to a wide wind speed range, adaptability is high, and meanwhile the service life of the fan blades and other components can be prolonged.

The invention relates to a water-drop-shaped captive balloon high-altitude wind power generation system. The water-drop-shaped captive balloon and kite cloth carried by the water-drop-shaped captive balloon are used for generating lift force to drive a ground power generator to generate power. The lift force generation mechanism is that the windward side and the wind resistance are increased by adjusting the pitch angles of the aerostat and the bearing kite cloth, and the wind resistance is converted into cable tension to drive power generation. A V-shaped pulley expansion mode is adopted to uniformly distribute tension of main and auxiliary cables, so that bag damage caused by non-uniform stress in a posture adjusting process is avoided; the captive balloon is provided with an attitude controller, communicates with a ground control system through wireless data transmission, adjusts the take-up and pay-off speed of a main cable and an auxiliary cable to control the pitching angle to achieve lift force control, and greatly improves the power generation efficiency. The main cable power output winch drives a generator to generate electricity through a one-way bearing, and the input end is connected with a motor through a clutch to achieve cable recovery. The backpack kite cloth can be controlled to open and close through a small winch to increase and decrease wind resistance; lift force and wind resistance control is optimized, the power generation efficiency is improved, safety is enhanced, operation is simplified, and maintenance is convenient.

The invention relates to the technical field of wind power generation, and particularly discloses a duct double-turbine supercharged windmill which comprises a duct and a blade type rotating structure arranged in the duct. The duct sequentially comprises a first contraction section, a first straight section, a second contraction section and a second straight section in the air flow direction, and the diameter of the first straight section is larger than that of the second straight section. The blade type rotating structure comprises a rotating shaft, a first-stage turbine and a second-stage turbine, the first-stage turbine and the second-stage turbine are arranged on the rotating shaft, the first-stage turbine and the second-stage turbine are correspondingly arranged on the first straight section and the second straight section respectively, and the rotating shaft is connected with the generator through a transmission structure. Structural improvement is carried out through the blade type rotating structure and the duct, the turbofan located at the front end drives the turbofan located at the rear end to rotate, and therefore the wind energy utilization rate is increased.

The invention provides a transmission chain and a wind generating set. The transmission chain comprises a bearing seat, a transmission shaft and a transmission shaft, the main shaft is rotatably supported in the bearing seat and is provided with a front end and a rear end which are opposite to each other; the gear box comprises a box body and a planet carrier arranged in the box body, the box body is fixedly connected with the rear end of the bearing seat, and the planet carrier is rigidly connected with the rear end of the main shaft; and the thrust bearing is arranged in the gear box. According to the transmission chain, the overall structure is compact, the shafting and the gearbox are highly integrated, and the transmission chain has the advantages of being light in weight, low in overall cost and the like.

The invention discloses wind power generation equipment capable of giving an alarm at high temperature, which belongs to the technical field of wind power generation and comprises a fan blade, a rotating shaft, a step-up gear box, a generator, a first conveying pipe, a cooling coil, a rotating ring, a thermosensitive extrusion block, a placement ring cavity and the like. Two arranged thermosensitive extrusion blocks rotate to alternately and circularly extrude a conveying hose to generate suction force, so that water in the conveying hose, a second conveying pipe, a cooling coil, a first conveying pipe and a flow guide spiral groove circularly flows to absorb heat in the cabin shell, and continuous heat dissipation in the cabin shell is achieved; and when the temperature in the cabin shell is higher, the size of the rotating ring is increased, so that the speed of water flowing circularly in the conveying hose is increased, the water-cooling heat dissipation effect of the cabin shell is improved, and the problem that heat in a main engine of a wind generating set is difficult to dissipate in a high-temperature environment under most conditions is solved.

The invention belongs to the field of wind power generation, and particularly relates to a wind driven generator with a differential device. A vertical axis wind turbine with a differential device is characterized in that a rotating shaft is arranged on a fixed shaft, an upper fixed gear and a lower fixed gear are fixedly arranged on the upper portion and the lower portion of the rotating shaft respectively, a positioning bearing is further arranged in the middle of the rotating shaft, and an upper reset spring is arranged between the positioning bearing and the upper fixed gear; and a lower reset spring is arranged between the positioning bearing and the lower fixed gear. An upper sliding rail and a lower sliding rail are arranged at the upper end and the lower end of the inner wall of the resistance type blade respectively, an upper sliding gear and a lower sliding gear are connected into the upper sliding rail and the lower sliding rail respectively, the upper sliding gear is meshed with the upper fixed gear, the lower sliding gear is meshed with the lower fixed gear, and the upper sliding gear and the lower sliding gear slide in the upper sliding rail and the lower sliding rail. The wind driven generator can combine the advantages of a lift type fan and a resistance type fan, is easy to start at a low speed and can speed up at a high speed, so that the power of the fan is improved.

The invention provides an intelligent management method and system for global environmental control heat dissipation of a wind power plant, and is applied to the technical field of data processing. According to the application, wind power plant equipment operation and environment parameters are obtained, a global environment control sensing module is used, a core equipment state is monitored by means of multi-sensor fusion, and an equipment-environment association model is constructed to obtain a preliminary heat dissipation demand; an intelligent heat dissipation regulation and control module optimizes a strategy to generate a precise control instruction; the frequency converter fault-free management module dynamically adjusts parameters to form fault-free management information; coordinating equipment linkage through a joint optimization strategy to generate a global environment control scheme; and finally, the operation efficiency evaluation module outputs evaluation information containing efficiency and a safety coefficient, so that intelligent management of heat dissipation of the wind power plant is realized.

The present invention provides a wind turbine with an automatic protection function, which relates to the technical field of wind turbines, and comprises a base, a telescopic automatic protection support rod is provided on the base, a vertical generator is installed on the top of the telescopic automatic protection support rod through a horizontal control component, a horizontal axis wind turbine head and a vertical axis wind turbine assembly are installed on the vertical generator, a wind meter is provided on the horizontal axis wind turbine head, and the wind meter is electrically connected to the horizontal axis wind turbine head and the vertical axis wind turbine assembly through a controller. The present invention combines the horizontal wind turbine with the vertical wind turbine, so that the wind turbine can generate electricity normally at low wind speeds, can generate electricity in both directions at medium wind speeds, and can effectively protect the horizontal axis wind turbine head at high wind speeds, thereby increasing the power generation efficiency and the safety and reliability of the wind turbine.

A bearing arrangement includes a first anti-friction bearing including an inner ring and an outer ring, a second anti-friction bearing including an inner ring and an outer ring, a first spacer element seated between the inner ring of the first anti-friction bearing and the inner ring of the second anti-friction bearing and including an oil supply channel which runs in a radial direction, and a second spacer element arranged between outer ring of the first anti-friction bearing and the outer ring of the second anti-friction bearing for adjusting a bearing prestress. The second spacer element includes at least two curved pieces which are placed circumferentially in opposition to one another. The second spacer element extends in the radial direction such as to from a radial gap to the first spacer element and includes an oil supply channel which runs in the radial direction.

The invention relates to the technical field of wind driven generators, and discloses a vertical axis wind driven generator with energy-saving and efficiency-increasing functions, which comprises a base, a support rod arranged on the base and a generator arranged on the support rod, a rotating table is fixed on a main shaft of the generator, and a plurality of groups of support frames are connected on the rotating table in an equal-angle annular array manner; a group of vertical blades are fixed on each group of support frames; a power-assisted starting mechanism is arranged on the rotating table, a rotating rod is rotationally connected to the power-assisted starting mechanism, a circular truncated cone is arranged at the end of the rotating rod, multiple sets of supporting plates are arranged at the two ends of the circular truncated cone, and spiral blades are arranged between the supporting plates in each set. According to the vertical-axis wind driven generator with the energy-saving and efficiency-increasing functions, when the wind speed is low, due to the fact that the spiral blades are small in mass and have better wind resistance and rotate before the vertical blades, the starting mechanism transmits rotating force of the spiral blades to the generator main shaft, and the wind speed threshold value of the vertical blades driving the generator main shaft to rotate is reduced; the power generation efficiency is improved.

An arrangement for fixing a housing of a wind turbine gearbox in a nacelle, including a housing-fixing means, a nacelle-fixing means, and at least two spring devices. The spring devices support the housing-fixing means against the nacelle-fixing means in opposite directions along a support axis. The spring devices are arranged on different sides of a plane extending parallel to an axis of rotation of an input shaft of the wind turbine gearbox.

An arrangement for fixing a housing of a wind turbine gearbox in a nacelle, including a housing-fixing means, a nacelle-fixing means, and at least two spring devices. The spring devices support the housing-fixing means against the nacelle-fixing means in opposite directions along a support axis. The spring devices are arranged on different sides of a plane extending parallel to an axis of rotation of an input shaft of the wind turbine gearbox.

The invention provides a wind generating set, a differential speed regulation device and a control method thereof, the wind generating set comprises the differential speed regulation device, a multi-port converter and an electro-magnetic synchronous generator, and the differential speed regulation device comprises a permanent magnet motor, a differential planetary gear train, a quasi planetary gear train and a speed regulation motor. A permanent magnet motor rotor is connected with a differential planetary gear train planet carrier, and a speed regulating motor rotor is connected with a quasi planetary gear train sun gear. The differential planetary gear train sun gear drives the electro-magnetic synchronous generator rotor to operate at a first preset rotating speed. One port of the multi-port converter is connected with the permanent magnet motor stator, one port is connected with the speed regulation motor stator, and the other port is connected with the electro-magnetic synchronous generator rotor through the slip ring. According to the differential speed regulation device, variable-speed input, self-energized speed regulation and constant-speed output are achieved, and the differential speed regulation device is compact in overall structure, small in size and light in weight; the black start can be realized without taking power from a power grid; and the electro-magnetic synchronous generator is directly connected to the grid, so that the power grid supporting capacity is high.

The present application relates to the field of wind power generation technology, and discloses a ducted double turbocharged windmill, which comprises a duct and a blade type rotating structure arranged in the duct. The duct comprises a first contraction section, a first straight section, a second contraction section and a second straight section in sequence along the wind direction, and the diameter of the first straight section is greater than that of the second straight section. The blade type rotating structure comprises a rotating shaft, a primary turbine and a secondary turbine arranged on the rotating shaft, the primary turbine and the secondary turbine are arranged in the first straight section and the second straight section respectively, and the rotating shaft is connected with a generator through a transmission structure. The present application improves the structure of the blade type rotating structure and the duct, and realizes that the turbine fan at the front end drives the turbine fan at the rear end to rotate, so as to improve the wind energy utilization rate.

The invention relates to a wind-powered device for generating electrical power and to a method for generating electrical power using wind power. In order to provide a technology for wind-powered generation of electrical power that has improved efficiency, a wind-powered device (1) for generating electrical power is proposed, comprising a vertical rotor (2), a first drive shaft (3) that can be driven by the vertical rotor (2), a second drive shaft (4), an electrical generator (5) that can be driven by the second drive shaft (4), and a movable lever device (6), wherein the first drive shaft (3) is operatively connected to the lever device (6) for driving the latter, and wherein the lever device (6) is operatively connected to the latter for driving the second drive shaft (4).

The invention relates to a drive arrangement (101, 301) for a wind turbine, comprising a main shaft, a housing (103), a nacelle-mounted support structure (105), and at least one spring element (107, 109); wherein the main shaft is fully supported in the housing (103); and wherein the housing (103) is resiliently mounted in the support structure (105) by means of the at least one spring element (107, 109). The at least one spring element (107, 109) has at least one resilient diaphragm (403).

A method for reducing gear induced noise from a wind turbine is disclosed. A first vibration map and a second vibration map are generated, specifying, for each of a plurality of operating points of the generator, a virtual phase of vibrations originating from gear tooth meshing of the gearbox, relative to a first and second reference phase, at the respective operating points. An overlap between operating points of the first vibration map and operating points of the second vibration map is identified and virtual phases within the overlap are compared, thus deriving a phase offset between the first vibration map and the second vibration map. The virtual phase of vibrations of each of the operating points of the second vibration map are adjusted according to the phase offset, so as to align the first vibration map and the second vibration map, and the first vibration map and the second vibration map are combined into a resultant vibration map.

The invention provides a reverse lift-drag combined vertical axis wind turbine based on differential transmission and a control method, the vertical axis wind turbine comprises a rotor system, a blade system, a supporting system, a transmission system and a control system, the rotor system comprises a composite rotor shaft, and the composite rotor shaft comprises an inner rotor shaft and an outer rotor shaft; the inner rotor shaft and the outer rotor shaft coaxially rotate around the same rotating shaft in different directions; the transmission system comprises a transverse driving gear, a longitudinal driven double-tooth gear and a transverse driven gear. Differential speed and reverse rotation between the inner rotor shaft and the outer rotor shaft are achieved through linkage of the gears. The blade system comprises lift-type blades and resistance-type blades, the control system can adjust the angles of the lift-type blades and the resistance-type blades according to the wind speed and the wind direction, under the extreme working condition, the angles are adjusted to enable the blade system and the supporting system to be tangent to form a closed structure, and the safety of the overall structure of the wind turbine is protected.

A method for tracking a gear tooth meshing angle of a gearbox of a wind turbine is disclosed. An initial reference virtual gear tooth meshing angle of the gearbox is selected, and an angular position of a high speed shaft and / or a low speed shaft of the gearbox is monitored. A virtual gear tooth meshing angle relative to the reference virtual gear tooth meshing angle is estimated, based on the monitored angular position of the high speed shaft and / or the low speed shaft and on information regarding topology of the gearbox. A number of full rotations of the high speed shaft and / or the low speed shaft which corresponds to an integer number of full periods of gear meshing of the gearbox is calculated, and the reference virtual gear tooth meshing angle is reset each time the high speed shaft and / or the low speed shaft has performed the calculated number of full rotations. The estimated virtual gear tooth meshing angle is applied to a periodic noise signal of the wind turbine.

The invention relates to a transmission device, a transmission system, a wind generating set and a maintenance method, the transmission device comprises a shafting assembly and an interference magnitude adjusting device, the shafting assembly comprises a main shaft and a bearing, the bearing is arranged around the main shaft, an inner ring of the bearing is in interference fit with the main shaft, and the main shaft is provided with a hollow cavity. The interference magnitude adjusting device is arranged in the hollow cavity and used for applying acting force to the inner wall face, defined by the main shaft, of the hollow cavity, so that the main shaft deforms to adjust the interference fit amount between the main shaft and the inner ring of the bearing. The bearing ring running probability can be reduced, and the power generation benefit of the wind generating set is guaranteed.

The invention relates to a gearbox supporting device for a wind turbine generator and a gearbox assembly of the wind turbine generator. The gear box supporting device for the wind turbine generator comprises a movable core shaft and a supporting rod, wherein the movable core shaft penetrates through a connecting hole of a gear box; the rack mounting frame is connected with a rack, a hollow mounting space is formed in the rack mounting frame, and the end part of the movable core shaft extends into the mounting space; the first elastic component is positioned in the mounting space, surrounds the end part of the movable core shaft and keeps the end part of the movable core shaft in the mounting space of the rack mounting frame; and the second elastic assembly surrounds the movable core shaft and keeps the movable core shaft in the connecting hole.

The invention discloses an air pressure energy storage type wind generating set and a power generation method thereof, and relates to the field of wind power generation. The air pressure energy storage type wind generating set comprises a sleeve stand column, the top of the sleeve stand column is rotationally connected with a base, and the top of the base is sequentially provided with a first mounting frame, a second mounting frame and an upper support; and two sets of resistance type blades are movably mounted in the first mounting frame and the second mounting frame correspondingly, and two sets of transmission gears matched with the racks are arranged outside the transmission shaft. According to the wind driven generator, the resistance type blades which are slidably expanded and contracted and overlapped are arranged, when the resistance type blades are expanded, the contact area between the resistance type blades and wind is larger, then the wind power can better push the resistance type blades to rotate to drive the generator to be started, and when the resistance type blades are contracted and overlapped, the contact area between the resistance type blades and the wind can be reduced; therefore, the reactive force between the resistance type blades and the wind during rotation is reduced, the maximum rotating speed of the generator can be increased by reducing the reactive force, and the generating efficiency of the generator is improved.

A method for controlling operation of a generator for a wind turbine is disclosed. At least one amplitude of a harmonic in the gearbox vibrations is determined. A torque modulating signal for the generator is generated. A phase angle and the amplitude are adjusted during operation of the generator, until a minimum in amplitude of a resultant vibration is reached, thereby obtaining an adjusted torque modulating signal. The adjusted torque modulating signal is injected into the generator, resulting in the resultant vibration of vibrations of the gearbox and vibrations of the generator, corresponding to the harmonic in the gearbox vibrations, being reduced.

The invention provides a main shaft for a wind turbine generator and the wind turbine generator, and relates to the technical field of wind turbine generators. The main shaft comprises a main shaft body and an assembling support used for fixing a cable, the main shaft body is oppositely provided with a first flange and a second flange in the axial direction of the main shaft body, the first flange is located on the inner side of the main shaft body, and the second flange is located on the outer side of the main shaft body; the assembling support is arranged in the main shaft body, the two ends of the assembling support are connected with the first flange and the second flange respectively, the assembling support is fixedly connected with the inner wall of the main shaft body, the structural form of the main shaft is optimized, then the machining efficiency is improved, and the production period is shortened.

The invention provides an anti-scour and high-energy-harvesting offshore combined power generation device, and belongs to the technical field of combined power generation devices.The anti-scour and high-energy-harvesting offshore combined power generation device comprises an offshore wind power generation device body, the offshore wind power generation device body comprises a wind wheel system, a transmission system, a power generation system, a tower drum and a single pile foundation, and the tower drum is fixed to the single pile foundation through a flange ring; the generator set is supported on the tower drum; the wave energy power generation device comprises a side wall, a top, an air hole, an airflow pipeline, a bottom plate, an inner wall and a tide level self-adaption device. A main body of the wave energy power generation device is of an annular vertical cylindrical oscillating water column type and is provided with a tide level self-adaptive device; the tidal current energy power generation device is located on the lower portion of the wave energy power generation device, the tidal current energy power generation device comprises tidal current energy blades, a hub, a connecting column, an upper annular track and a lower annular track, the tidal current energy power generation device is supported by the connecting column, and the problem that an existing device cannot give consideration to scour protection and offshore wind energy, wave energy and tidal current energy combined power generation is solved.

A system for flexible operation for wind energy storage, and a related method, the system including a wind turbine having a rotor disposed thereon, a rotor shaft extending from the rotor and rotatable therewith, an electrical generator disposed in communication with the rotor shaft, a power generation / regeneration system, which may include a fluid power system, is disposed in communication with the rotor shaft, where rotation of the rotor shaft rotates the electrical generator to produce generator power (Pg), where, when the fluid power system is in a power generation mode, aerodynamic rotation of the rotor shaft produces fluid power (Pf) at the fluid power system, at least a portion of which is stored as energy in an energy storage, and where, when the fluid power system is in a power regeneration mode, energy is released from the energy storage and converted by the fluid power system to fluid power (Pf) that can be combined with aerodynamic rotor power to drive the electrical generator.

Embodiments disclosed may serve the function of a pump, a generator, or a propulsion system. Two flexible fins are coupled via their longitudinal inner edges to fin coupling modules. An external fluid flow causes traveling fin undulations. The angle of the fins relative to each other changes as undulations travel along the fins which can be translated through the fin coupling modules into mechanical work, powered by the external fluid flow. The mechanical work of the fin coupling modules may be the cyclical extension and contraction of pistons or bellows incorporated into the fin coupling modules, which may draw ambient fluid during their extension cycles and compress fluid during their contraction cycles to create a pump. The pistons or bellows may also be sealed from ambient fluid but connected through conduits through which contained fluid is exchanged in a continuous circulation of fluid to power a pump or a turbine.

The invention discloses a marine wind-solar hybrid driving device and a control method, and relates to the technical field of ship power systems, and the driving device comprises a wind energy collection unit, a solar energy collection unit, a conduction unit and a power distribution structure. According to the marine wind-solar hybrid driving device and the control method, efficient cooperative utilization of wind energy and solar energy is realized by constructing a real-time energy flow network and adopting a model prediction control algorithm; under typical working conditions, compared with a traditional scheme, the wind-solar cooperative power generation efficiency is remarkably improved, and the energy switching loss is greatly reduced; and secondly, a self-adaptive adjustment mechanism is designed for an extreme environment, so that stable and efficient operation of the system under special conditions such as high temperature and low temperature is effectively guaranteed, and the problem that the energy conversion efficiency in a traditional system is greatly reduced is avoided.

A housing for a wind turbine gearbox, including at least two bolt eyes for receiving a respective bolt for fixing a housing in a nacelle-fixing means. In each case two bolt eyes are mirror-symmetrical to each other with respect to a first longitudinal plane. The bolt eyes are arranged entirely on a same side of a second longitudinal plane which runs orthogonally to the first longitudinal plane.