2488results about "Wind motors" patented technology

The invention belongs to the technical field of wind power equipment fault diagnosis, and relates to a wind turbine generator maintenance method based on multi-modal data fusion and a knowledge graph. Comprising the steps of obtaining text description data, component image data and equipment operation time sequence data of a wind turbine generator; predicting the residual life of the component based on the equipment operation time sequence data, and generating a residual life prediction value; performing feature extraction on the data to obtain corresponding features; performing fusion processing on the features to obtain joint feature representation; analyzing a fault evolution time sequence mode of the wind turbine generator based on the joint feature representation; performing matching retrieval in a historical case library according to a fault evolution time sequence mode; and inputting a matching retrieval result into the dynamic knowledge graph for reasoning, generating a fault traceability result, and generating a maintenance decision scheme including a maintenance priority list in combination with the residual life prediction value. According to the method, accurate fault diagnosis, automatic source tracing of root causes and dynamic optimization of maintenance strategies are realized, the operation and maintenance efficiency is remarkably improved, and the cost is reduced.

The invention discloses an electric heating deicing system and method based on machine learning prediction and adaptive adjustment, and belongs to the technical field of wind power generation. The system comprises a multi-physical sensor array and a dynamic heating execution module which are arranged on a blade. The multi-physical sensor array and the dynamic heating execution module are both connected with a CAN bus; the CAN bus is connected with an intelligent control module, a cloud collaboration platform and an edge computing node. The method comprises the following steps: acquiring historical operation data of an original unit, and preprocessing the historical operation data to obtain preprocessed data; the original unit historical operation data comprises environmental parameters and blade state monitoring data; analyzing the preprocessed data based on a machine learning algorithm, and establishing a blade icing prediction model; real-time environment parameters and blade state monitoring data are obtained, and the blade surface icing condition is predicted based on the blade icing prediction model; and determining the heating requirement of the blade based on the surface icing condition of the blade, and carrying out deicing.

The invention relates to the technical field of wind power generation, in particular to a blade icing diagnosis method and device, an intelligent deicing system and a storage medium. According to the invention, blade icing diagnosis is carried out by adopting multi-modal data, the early detection accuracy of blade icing is improved, the false alarm rate of single sensor detection is reduced, and accurate diagnosis of blade icing is realized. When the multi-modal data is processed, a dynamic alignment algorithm is adopted, the limitation that traditional data alignment only depends on timestamps is broken through, meteorological data is introduced to serve as an alignment constraint condition, and the problem that physical relevance of the multi-modal data is missing is solved. And meanwhile, a hybrid expert architecture is adopted to process the multi-modal data, so that effective fusion and high-robustness diagnosis of the multi-modal data are realized.

The invention discloses an existing wind power blade electrothermal film deicing control method based on big data, and relates to the technical field of wind turbine generator operation control and ice prevention and removal. Frost ice / glaze ice probability output by an ice type discrimination model does not only give an alarm any more, but is directly converted into an increase / decrease coefficient constrained by boundary and monotonicity; energy can be fully put in a glaze ice scene, and overheating and over-consumption can be avoided in a frost ice scene; according to the method, the change trend of wind speed, temperature and relative humidity is introduced as modulation factors, the working condition of forming / turning glaze ice is responded in advance, and insufficient deicing caused by static threshold hysteresis is reduced; according to power deviation correction, a unit wind speed-power curve serves as a reference, a dead zone, segmented gain and accumulative saturation structure is adopted, on the premise of not depending on an external icing sensor, extrinsic performance of pneumatic degradation is closed into controlled quantity, sensitivity and stability are considered, and start-stop oscillation and duration drift are reduced.

Tower cleaning device, characterized in that it a main body (100) comprising an annular frame (101) and a support frame (102), wherein the annular frame (101) is formed by connecting four arcuate frames by means of screws, wherein one of the support frames (102) is arranged on each of the arcuate frames (101), wherein a clamping wheel (103) is connected to the support frame (102); and a cleaning mechanism (200), wherein the cleaning mechanism (200) is arranged on the main body (100), and the cleaning mechanism (200) comprises a clamping and adjusting mechanism (201), a gear synchronization mechanism (202), a drive mechanism (203), a drive synchronization mechanism (204), a reciprocating brush mechanism (205), and a water spray mechanism (206), wherein the clamping and adjusting mechanism (201) is arranged on the annular frame (101), and the clamping and adjusting mechanism (201) is configured to adjust the support frame (102), wherein the gear synchronization mechanism (202) is arranged on the clamping and adjusting mechanism (201), and the four support frames (102) are adjusted synchronously by the gear synchronization mechanism (202), wherein the drive mechanism (203) is connected to the annular frame (101) and is configured toto set the clamping wheel (103) in rotation, wherein the drive synchronization mechanism (204) is connected to the drive mechanism (203), and the clamping wheels (103) on the four support frames (102) are driven synchronously by the drive synchronization mechanism (204), wherein the reciprocating brush mechanism (205) is arranged on the support frame (102) and is configured to perform reciprocating brushing, and wherein the water spray mechanism (206) is attached to the reciprocating brush mechanism and is configured to spray water in the reciprocating brushing.

The invention discloses a wind power generation system. The system comprises a ground device; the floating device comprises an adjusting air floating piece and a first annular air floating piece, the adjusting air floating piece is movably connected with the ground device, the first annular air floating piece is connected with the adjusting air floating piece, and a through duct is defined by the inner wall of the first annular air floating piece; the wind power generation device is arranged in the duct; and the position of the gravity center of the adjusting air floating piece in the extending direction of the duct is adjustable. According to the wind power generation system, the influence of airflow disturbance, temperature change and buoyancy lift gas leakage on the floating device can be reduced, the phenomenon that the pitching posture change amplitude is large is reduced, particularly, the included angle between the wind receiving face of the blade of the wind power generation device and the airflow direction is closer to the optimal value, the effective wind energy area flowing through the blade is increased, and the wind power generation efficiency is improved. And the fluctuation of the wind energy yield along with the posture is reduced, so that the wind energy utilization efficiency and the power generation output power are improved.

The invention discloses an air filter element structure for a wind generating set, and relates to the technical field of air filtration, the air filter element structure comprises a cabin, a filter assembly is arranged at the top end in the cabin, the filter assembly comprises a bottom frame, the bottom frame is fixed at the bottom end in the cabin, and a tank body is fixedly mounted on the top surface of the bottom frame; a motor is fixedly installed at the bottom end in the bottom frame, a rotating shaft of the motor penetrates through and is rotationally installed at the top end in the bottom frame, the rotating shaft of the motor penetrates through and is rotationally installed in the middle of the bottom face of the tank body, a first disc is fixed to the top face of the rotating shaft of the motor, and four frame plates are fixed to the top face of the first disc; four activated carbon plates are fixedly mounted on the inner walls of the four frame plates correspondingly, floating dust and gas in air are separated in the rotating process of the activated carbon plates, and therefore the problem that a motor body in a cabin is prone to being corroded and damaged by the floating dust due to the fact that the air carries the floating dust to enter the cabin is solved.

The invention provides a remote non-contact photo-thermal deicing method for the surface of a fan blade, and the method comprises the steps: carrying out the ice condition data collection of the surface of the fan blade, and obtaining multi-modal data; performing feature recognition on the multi-modal data to obtain ice condition features; constructing a three-dimensional thickness distribution model by combining natural illumination factors based on the ice condition characteristics, and generating a deicing strategy; laser deicing is carried out according to the deicing strategy, and a laser beam is adjusted and controlled through a bee colony focusing algorithm; monitoring the temperature change of the coating on the surface of the fan blade in real time so as to adjust the laser power; and carrying out deicing rate detection on the surface of the de-iced fan blade, and if the deicing rate does not reach the standard, carrying out deicing operation again until the deicing rate reaches the standard. According to the method, through fusion of multispectral imaging, millimeter wave radar, a double-flow neural network and a dynamic environment modeling technology, accurate identification of ice conditions and adaptive laser deicing control are realized, and dependence on natural illumination is removed while energy consumption is reduced.

The invention discloses an intelligent temperature control wind turbine generator blade electric heating deicing system and method, and belongs to the technical field of wind power generation. The system comprises an electric heating film arranged on a blade, a thermal infrared imager and a plurality of sensors, the electric heating film, the thermal infrared imager and the plurality of sensors are all connected with an intelligent control unit; the intelligent control unit is connected with an unmanned aerial vehicle carrying a laser radar and is used for regularly scanning ice layer distribution on the surface of the blade; and the electric heating film adopts zone control. The method comprises the following steps: acquiring environmental parameters and blade state monitoring data, and starting a deicing system; the method comprises the following steps: collecting deicing data from a deicing system in real time and preprocessing the deicing data to obtain preprocessed deicing data; establishing an intelligent temperature control model based on the environmental parameters and the blade state monitoring data; and inputting the pre-processed deicing data into an intelligent temperature control model, calculating to obtain dynamic adjustment data of the heating power, and transmitting the dynamic adjustment data to a deicing system for deicing.

A fluid film bearing for a rotor hub of a wind turbine includes a first part and a second part rotatably coupled to each other about a longitudinal axis. The first part includes an annular first sliding surface extending in the circumferential direction of the fluid film bearing along the first part. In addition, the second part includes a support structure and a first group of bearing pads coupled to the support structure and having a bearing pad sliding surface configured to slide on the first sliding surface. In addition, the fluid film bearing further includes a seal arranged between the first part and the second part.

The invention relates to the technical field of wind driven generator control, in particular to a thermal management system and method for a wind driven generator, and the system comprises a data collection layer, a prediction module, a digital twin model, an intelligent control and diagnosis engine, and a heat dissipation execution mechanism. In the prior art, an open-loop or simple feedback control scheme based on a real-time temperature threshold value is mainly adopted, the problem of response lag exists, and all heat dissipation parts always work independently and lack cooperation, so that the energy efficiency is low; according to the invention, a closed-loop intelligent thermal management scheme based on a digital twin model is adopted, and real-time simulation and future state prediction are carried out by constructing virtual mapping of a generator thermal system, so that a control system can actively and cooperatively manage all heat dissipation resources according to a simulation result; the method has the core advantage of converting passive into active, and can intervene in advance before excessive accumulation of heat, so that collaborative optimal control of all parts of the system is realized, and the accuracy, timeliness and overall energy efficiency of heat management are remarkably improved.

A double-liquid vibration-damping liquid-shaking tank for a wind turbine tower drum oriented to source network load storage coordination belongs to the technical field of wind turbine vibration-damping equipment, is a liquid-shaking damping structure externally arranged on a wind turbine main body, and comprises a wind direction plate and a liquid-shaking tank structure consisting of an annular liquid-shaking tank, a liquid partition plate, upper-layer liquid and lower-layer liquid, and the turntable fixing structure consists of a rotor and a rotor flange plate. The annular liquid shaking cabin is provided with a central through hole, is sleeved on the tower drum, is internally provided with a liquid partition plate, and is filled with two-phase liquid which has density difference and is immiscible with each other; the wind direction plate is arranged on the outer side of the annular liquid shaking cabin; the liquid shaking damping structure is fixed to the wind turbine tower fixing section through the rotor flange plate. Single shaking liquid is replaced by stably layered immiscible double liquid, the vibration reduction effect of the shaking liquid damping structure is improved, and the shaking liquid damping structure is accurately adaptive to all working conditions; and through linkage of the wind direction plate and the liquid partition plate, the vibration reduction effect of the shaking liquid damping structure is improved, the resonance effect is restrained, and the stability of the vibration reduction effect of the shaking liquid damping structure is enhanced.

Hydrodynamic rotor shaft plain bearing for a rotor shaft (8), in particular of a wind turbine, comprising at least one axial bearing (1) with an axial bearing housing (2) and a plurality of axial bearing segments (5) arranged therein, wherein the axial bearing housing (2) is fastened to a carrier (25), wherein the axial bearing housing (2) has a housing body (2a) with a plurality of radial openings (4), wherein an axial bearing segment (5) is inserted into each opening (4), which axial bearing segment can be inserted and removed from the radial outside, and in that two laterally radially projecting fastening flanges (3) are provided on the housing body (2a), which fastening flanges are supported on support cuts (26) projecting from the carrier (25) and are fastened thereto in such a way that all axial bearing segments (5) are freely accessible from the radial outside.

The invention provides a method for replacing a bearing on a wind driven generator tower. The method comprises the following steps that S1, accessories at the N / D end of a motor are disassembled; s2, air gap filler strips are cushioned between the stator and the rotor; s3, mounting a tower bearing replacement tool, leveling and tensioning the axle suspension bush through a screw rod of the tool, adjusting the transverse position of the rotor, jacking the axle suspension bush together with the rotor by using a jack, adjusting the transverse and vertical positions of the rotor, and detecting the uniformity of air gaps; s4, disassembling an end cover of the N / D end of the motor, installing an inner side tool, disassembling an outer side tool, lifting out the end cover, and replacing a bearing; and S5, after the N / D end cover of the motor is reinstalled according to requirements, the air gap filler strip is drawn out, and the N / D end accessory is installed. According to the method, the overall tower descending cost of the motor is saved, the maintenance efficiency of motor bearing replacement and the like is improved, the safety risk possibly existing in the overall tower descending overturning disassembly process of the motor is avoided, and the product quality in the maintenance process of motor replacement and the like is better guaranteed.

The invention provides an innovative design of a corrugated pipe damper integrated on a sliding main bearing aiming at the problems of transmission system abrasion and fatigue damage caused by vibration energy accumulation of the wind power main bearing under a complex wind load, and belongs to the technical field of wind power generation equipment. A traditional main bearing damping structure is low in energy absorption efficiency, insufficient in dynamic response and difficult to effectively suppress vibration. Through collaborative design of a corrugated pipe multi-stage laminated structure and a fluid energy dissipation channel, a composite mechanism for dynamically dissipating vibration energy is formed. The core of the damping device is composed of a corrugated pipe assembly, damping cavities and a main shaft adaptive structure, impact energy is absorbed through axial flexible deformation of the corrugated pipe, vibration attenuation is achieved in combination with reciprocating flowing of damping fluid in the multiple cavities, and low-frequency swing and high-frequency harmonic waves of a main bearing are synchronously restrained. According to the design, the bearing capacity is guaranteed, vibration transmission is remarkably reduced, the service life of the main bearing is effectively prolonged, the operation reliability of a unit is improved, and the damping requirement of a core transmission system of a high-power wind turbine generator is met.

The invention relates to a blade decommissioning tool for decommissioning an installed wind turbine blade. The blade decommissioning tool comprises cutting means for cutting through the wind turbine blade in a transversal direction perpendicular to a longitudinal direction L of the wind turbine blade to form a proximal and distal part of the wind turbine blade; lowering means for lowering the distal part of the wind turbine blade relative to the proximal part; support means for supporting the cutting means and the lowering means; and clamping means for clamping the support means to wind turbine blade.

The invention relates to the technical field of wind turbine generator maintenance, and discloses a wind turbine generator blade unmanned aerial vehicle deicing assembly and method.The wind turbine generator blade unmanned aerial vehicle deicing assembly comprises an unmanned aerial vehicle, and a laser radar and an installation shell integrating an ultrasonic transducer, a pulse nozzle and a hydraulic pump are installed at the bottom of the unmanned aerial vehicle. The deicing control system obtains focus space coordinates and interface resonance frequency of the blade surface by using a space state sensing module; the stress field focusing module calculates the phase delay amount of the ultrasonic transducer, compensates the pose deviation of the unmanned aerial vehicle by adjusting the emission time sequence, and drives the ultrasonic transducer to generate resonance stress on an ice layer-skin interface; and the sound stream synchronous control module determines a jet flow triggering moment according to synchronous phase locking solution, drives a pulse nozzle at an instantaneous negative pressure phase point of a sound wave period to inject a small amount of deicing fluid into an interface crack, and generates shear stress to induce the interface crack to expand and peel off an ice layer. Accurate throwing of deicing energy is achieved, and the icebreaking efficiency is improved on the premise that the safety of the blade structure is guaranteed.

The present invention relates to a wind turbine blade having a lightning protection system. The blade includes a pressure side shell part and a suction side shell part. The pressure side shell part or the suction side shell part comprises a blade component extending along a longitudinal axis of the blade and comprising one or more carbon fibre structures. The blade component is at least partially embedded in the shell part. An elongate metallic element is arranged in direct contact with the blade component, and at least part of the elongate metallic element is positioned between the blade component and an outer surface of the shell part. A lightning receptor is arranged in electrical contact with the elongate metallic element and extends to or near an outer surface of the blade shell part. The lightning receptor does not extend through the blade component.

The invention belongs to the technical field of intelligent operation and maintenance of wind power generation equipment, and particularly relates to a wind turbine blade predictive anti-icing system and method based on digital twinning, and the system comprises a digital twinning prediction module which comprises a three-dimensional model construction unit and an AI prediction algorithm unit. The three-dimensional model construction unit is used for constructing a three-dimensional digital twinborn model of the wind turbine blade; the AI prediction algorithm unit is used for performing icing risk prediction based on the three-dimensional digital twinborn model and meteorological data; the photo-thermal collaborative anti-icing execution module comprises a blade posture adjusting unit and a transparent electric heating glass layer unit, and the transparent electric heating glass layer unit is laid on the surface of the wind turbine blade; according to the invention, a high-risk area is accurately identified through a digital twinborn model, blade yaw and a transparent electric heating glass layer are linked to realize photo-thermal synergistic anti-icing, formation of an ice layer is inhibited from the source, and the passive ice melting demand is reduced.

The invention provides a thrust sliding bearing, a shaft system and a wind generating set. The thrust sliding bearing comprises a thrust disc, a thrust supporting disc and a first bearing bush. The thrust disc is arranged on the rotating shaft and protrudes outwards in the radial direction relative to the rotating shaft; the thrust supporting part is opposite to the thrust disc in the axial direction of the rotating shaft, and the bearing bush assembly is fixedly installed on the axial side surface of the thrust disc, makes sliding contact with the thrust supporting part and can rotate along with the thrust disc. According to the thrust sliding bearing provided by the embodiment of the invention, the bearing bush assembly is fixedly mounted on the thrust disc, when the bearing bush assembly needs to be maintained or replaced, the thrust disc can be driven to rotate through the rotation of the rotating shaft, and under the condition, the bearing bush assembly can rotate along with the thrust disc, so that the bearing bush assembly can rotate along with the thrust disc; when the bearing bush assembly needs to be replaced, the bearing bush assembly needing to be replaced can be rotated to the upper non-load point, so that the bearing bush assembly can be detached from the rotating shaft under the condition that the bearing bush assembly needing to be replaced does not bear load, and the operation and maintenance difficulty can be remarkably reduced.

Disclosed is a spherical roller bearing comprising: at least an outer ring and an inner ring; two groups of spherical rollers; and at least one cage configured to retain the spherical rollers, the cage comprising at least one axially inner cage ring, a first axially outer cage ring and a second axially outer cage ring extending in a circumferential direction of the spherical roller bearing, the first axial outer retainer ring and the second axial outer retainer ring are respectively separated from the axial inner retainer ring and are connected to the axial inner retainer ring through a plurality of retainer rods to form a closed cavity; each pocket is configured to receive one spherical roller and has an axially inner pocket side face and an axially outer pocket side face configured to restrain the spherical roller in the axial direction, each cage bar has a curved portion extending in the axial direction in the circumferential direction, the curved portion is at least partially concave, and in the axial direction, the curved portion is at least partially concave. The distance between the vertex of the bending part and the side face of the axial inner cavity lattice is different from the distance between the vertex of the bending part and the side face of the axial outer cavity lattice.

The invention relates to the technical field of wind turbines, and particularly provides a sliding bearing system and a maintenance method thereof.The sliding bearing system comprises a pair of radial sliding bearings located at the hub end and the gearbox end of a main shaft respectively, and the main shaft is rotatably connected to a cabin through the pair of radial sliding bearings; the axial sliding bearing is located on the opposite outer side of the gear box end of the main shaft, and the axial sliding bearing is connected with the cabin and the main shaft; the axial sliding bearing includes an annular plate detachably connected to the gearbox end of the main shaft and a number of caliper slider modules arranged spaced apart from each other along a circumferential direction of the annular plate and detachably connected to the nacelle and each releasably clamping the annular plate. Through the configuration, the caliper type sliding block module can loosen and clamp the annular plate, so that the caliper type sliding block module can be loosened and further pulled out from the annular plate, and the axial sliding bearing with the replaceable sliding blocks on the two sides is realized.

A vibration absorber arrangement (1) is provided, in particular for tall slender structures, comprising a supporting structure (8), an absorber mass (2) which comprises a center of mass (3), and at least one wheel (4, 5) by means of which the absorber mass (2) is movable on a concavely curved rail arrangement (6), which is connected to the supporting structure (8), from a stable central position in two opposite directions, wherein a friction damper device (9) is provided. One wants to be able to adapt such a vibration absorber arrangement in a simple manner to different operating requirements. For this, it is provided that the friction damper device (9) is adjustable between a first state, in which it does not interact with the absorber mass (2) or only dampeningly, and a second state, in which it controlledly brings a movement of the absorber mass (2) to a standstill.

The embodiment of the invention discloses a lubricating grease heating device of a wind driven generator and a control method of the lubricating grease heating device, lubricating grease is located in a shell, and the lubricating grease heating device of the wind driven generator comprises a mounting disc, a heating coil, a circuit board, a temperature sensor and a control device. The installation disc is connected with the outer wall of the shell, the heating coil is connected with the installation disc, a heating circuit is arranged on the circuit board and connected with the heating coil, the heating coil is used for generating a variable magnetic field to enable the shell to generate an eddy current effect, and the temperature sensor is located in the shell and used for obtaining the temperature value of lubricating grease. And the control device is connected with the temperature sensor and is used for controlling the on-off of the heating circuit according to the temperature value. The control device controls the on-off of the heating circuit according to the temperature value and further controls the heating state of the lubricating grease, so that the temperature of the lubricating grease is kept within an ideal range, the lubricating effect of the lubricating grease is guaranteed, and the lubricating grease is prevented from being solidified and hardened due to low temperature.

The invention discloses an unmanned aerial vehicle-based fan blade lightning protection conductivity detection device, which comprises an unmanned aerial vehicle and a ground measurement device, and further comprises a probe rod mounted on the unmanned aerial vehicle, the end part of the probe rod is elastically connected with a metal net assembly, and the metal net assembly is connected with the ground measurement device through a wire. The device is mainly composed of a rod-shaped net structure and is small in wind resistance, simple in structural assembly, stable, reliable, convenient to operate and high in safety; the contact angle of the contact metal net in the structure can be automatically adjusted according to the posture of the blade tip lightning arrester, so that the contact is good, the detection accuracy is improved, and the elastic connecting assembly also prevents the unmanned aerial vehicle from being damaged.

The invention relates to the technical field of wind driven generators, in particular to a wind power blade deicing device and a deicing method thereof. According to the technical scheme, the deicing assembly comprises a circulating heat pipe, a heat conduction assembly making contact with a wind driven generator is arranged at the end of the circulating heat pipe, the circulating heat pipe is fixedly installed in a blade, a water flow drawing pipe is fixedly installed in the middle of the circulating heat pipe, and one-way valves are fixedly installed at an inlet and an outlet of the water flow drawing pipe correspondingly; and the interior of the water flow drawing pipe is slidably connected with a piston. The temperature of water in the circulating heat pipe is increased through heat of the wind driven generator, the toothed plate is driven by angle change in the rotating process of the blades to reciprocate, so that the drawing rod and the piston reciprocate to continuously draw water and drain water, the flowing direction of the water in the circulating heat pipe is controlled through the two one-way valves, and the heat utilization rate is increased; and the water temperature in the circulating heat pipe is uniform, and the blades are uniformly heated to melt an ice layer.

The utility model provides an I-shaped thrust cylindrical roller bearing isolation block. The I-shaped thrust cylindrical roller bearing isolation block comprises a support column, a first cross beam and a second cross beam, arc-shaped grooves matched with the cylindrical rollers are formed in the large side faces of the supporting columns; one end of the strut is vertically connected with the first cross beam, two ends of the first cross beam protrude out of the strut and are planes, and the surface, connected with the strut, of the first cross beam is a plane; the other end of the strut is vertically connected with a second cross beam, two ends of the second cross beam protrude out of the strut and are planes, and the surface, connected with the strut, of the second cross beam is a plane; the supporting columns, the first cross beam and the second cross beam form an I-shaped structure; the material utilization rate can be improved, the machining difficulty is reduced, the machining efficiency is improved, the batch production cost is reduced, rolling body abrasion can be reduced, the bearing failure risk is reduced, and the service life of the bearing is prolonged.

An anti-abrasion and limiting structure for a twisted cable of an offshore wind turbine generator aims to solve the problem that a power cable is prone to abrasion in the yaw or vibration process of the offshore wind turbine generator, and effective protection and limiting of the power cable are achieved by designing a comprehensive protection structure comprising a cable fixing assembly, a limiting assembly and a protection layer. The cable fixing assembly is made of a high-strength and corrosion-resistant material and can be customized according to the outer diameter of the power cable, so that the cable can be stably fixed; the limiting assembly is arranged between the adjacent fixing clamps, and the relative displacement of the cable is effectively limited through the limiting effect of the limiting block and the limiting spring; the protective layer is made of a wear-resistant and corrosion-resistant high-performance material and covers the surface of the cable to form a protective layer so as to isolate direct contact between the cable and the external environment; the power cable is simple in structure and convenient to install, the wear rate of the power cable can be obviously reduced, the service life of the cable is prolonged, and the operation stability and reliability of an offshore wind turbine generator are improved.

In a first aspect, a suspended platform system for post-moulding operations on a wind turbine blade is provided. The system comprises a suspended working platform to hold a user, a driving system for moving the working platform, and a control unit to prevent a distance between the working platform and a surface of the wind turbine blade from being less than a safety distance threshold. In a further aspect, a method is provided. In yet a further aspect, a wind turbine blade post-moulding operation system is provided.

The invention relates to an oil collecting device, a lubricating system, a wind generating set and a control method, and the oil collecting device comprises a base which is configured to be connected with a part to be subjected to oil collection; the collecting container is arranged on the base, and the collecting container is provided with a containing cavity and an opening communicated with the containing cavity; the locking component is arranged on the base and comprises more than two locking units, the collecting container is provided with locking interfaces corresponding to the locking units respectively, and the locking component and the collecting container are switched between a first matching state and a second matching state; in the first matching state, each locking unit partially extends into the corresponding locking interface so as to fix the relative position of the collecting container and the base; and in the second matching state, each locking unit is separately arranged from the locking interface, and the collecting container has a motion freedom degree relative to the base. The oil collecting device provided by the invention can meet the oil collecting requirement, and is good in stability and high in safety.