3254results about "Wind motors" patented technology

The invention discloses a fan blade icing monitoring system and method, and relates to the technical field of wind power generation, and the system collects temperature, humidity and vibration signals in real time through a multi-sensor module installed on a fan blade, fuses multi-parameter data through an edge calculation unit, and calculates a blade icing risk factor # imgabs0 #. The risk factors are calculated by adopting a dynamic weighting model, and the icing state of the blade is accurately evaluated in combination with normalized characteristic values # imgabs1 #, # imgabs2 # and # imgabs3 #. And when the risk factor exceeds a set threshold value, the system triggers an alarm and transmits data to the cloud through the wireless communication module. The cloud platform predicts the future icing risk based on a long-short term memory (LSTM) neural network model in combination with historical data and real-time monitoring data, the accuracy and real-time performance of icing monitoring are improved, the method is suitable for operation in cold regions and high-altitude wind fields, and reliable guarantee is provided for safe and efficient operation of fans.

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 objective is to provide a construction project planning method capable of shortening the construction project schedule. [Solution] A process planning method for planning the processes of a monopile foundation construction project, comprising: a structural analysis process SA3 in which a computer performs multiple structural analyses of a monopile foundation model; and a first fabrication process SB1 that is started after completion of the earthquake response analysis included in the first structural analysis process SA3 and before completion of the earthquake response analysis included in the second structural analysis process SA3, wherein the first fabrication process SB1 does not fabricate the interface flange of the transition piece, but fabricates parts of the transition piece other than the interface flange, and the first fabrication process SB1 fabricates a connection part of the monopile body that is connected to the transition piece in a state that overlaps with it when viewed horizontally, but does not fabricate parts of the monopile body other than the connection part.

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.

The invention discloses a fan blade lightning stroke current simulation method and system based on multi-physics field coupling, and belongs to the field of wind power generation equipment protection, and the method comprises the steps: building a three-dimensional geometric model of a fan blade; defining a multi-physical field environment including an electromagnetic field, a thermal field and a stress field; setting lightning stroke points on the three-dimensional geometric model according to lightning parameters; calculating electromagnetic distribution, temperature distribution and stress distribution in the blade in the lightning stroke process along the lightning propagation channel by using the electromagnetic field, the thermal field and the stress field based on the lightning stroke point, the lightning stroke basic information and the lightning attenuation rate; and constructing a lightning stroke current simulation result according to the electromagnetic distribution, the temperature distribution and the stress distribution, and performing visual display. The technical problem that the blade lightning protection design is insufficient due to the fact that the influence of lightning stroke on the multi-physical field interaction of the fan blade cannot be comprehensively and accurately simulated and analyzed in the prior art is solved.

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 a draught fan and a blade icing fault diagnosis method and device thereof, a storage medium and a computer program product, and the method comprises the steps: obtaining the operation data of a draught fan from an SCADA system of a wind power generation system, sequentially carrying out the preprocessing and feature engineering processing, obtaining the feature variables of the draught fan, and dividing a training set and a test set as a sample; optimizing the neural network model by using an HO algorithm to obtain an optimized neural network model; training the optimized neural network model by using the training set to obtain a trained neural network model; evaluating the training neural network model by using the test set to obtain an evaluation result; and correcting the training neural network model according to an evaluation result to obtain a corrected neural network model, and recording the corrected neural network model as a blade icing fault diagnosis model of the fan. According to the scheme, neural network training is carried out based on the data acquired by the SCADA system, the fan blade icing fault diagnosis model is obtained, the cost is low, and the detection precision is high.

The present invention discloses a high-efficiency heat dissipation device for a wind turbine generator, specifically relates to the technical field of wind turbine generators, including a chassis, a fan blade is rotatably connected to one side of the chassis, a cleaning component is installed on the outside of the chassis, two air inlets are provided on one side of the chassis, a filter is fixedly connected to the inside of the air inlet, a generator is installed inside the chassis, and a heat dissipation mechanism is installed on the outside of the generator; the cleaning component includes a heat dissipation net, two first slide grooves are provided on the inside of the chassis, and a mobile frame is slidably connected to the inside of the two first slide grooves. The present invention removes dust and debris between the gaps of the heat dissipation net by setting a cleaning component and a heat dissipation mechanism, thereby maintaining the heat dissipation efficiency of the heat dissipation net, ensuring that the wind turbine generator can still operate normally in a high temperature environment, and at the same time, the high-efficiency heat conduction efficiency of the heat-conducting copper tube can be used to transfer heat to the coolant, which can effectively take away the heat generated by the inside of the chassis and the generator, thereby improving the heat dissipation efficiency.

The invention discloses a fan blade icing prediction method and device and a medium, and relates to the technical field of equipment monitoring, and the method comprises the steps: obtaining historical meteorological data, blade tip speed, pitch angle and historical icing data, and taking the data as real samples; performing data expansion on the real sample by using the generative adversarial network model to obtain a generated sample; the real samples and the generated samples form a training sample set, the training sample set is used for training the long-short-term memory neural network, and a fan blade icing prediction model is obtained to predict the icing condition of the fan blade. According to the method, the blade tip speed and the pitch angle which reflect relative motion of the blade and the supercooled liquid drop are added in training data, a prediction model obtained through training comprises icing phase change characteristics and relative motion characteristics of icing of a rotating object, description of the icing process of the fan blade is more accurate, and prediction is more accurate; the adversarial generative network model is adopted to expand the training sample set of the prediction model, the problem of insufficient real samples is solved, and the prediction accuracy is further 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 belongs to the technical field of offshore wind power generation, and discloses a floating type wind turbine generator mooring positioning method, a mooring positioning system and electronic equipment. According to the floating type wind turbine generator mooring positioning method, measurement data of the wind speed and the wind direction and position information of wind turbine generator layout are obtained, then a mooring system model of the wind turbine generator is constructed, and the maximum length and the minimum length of a mooring line are obtained; secondly, iteratively processing a plurality of design parameters by using a genetic algorithm, and keeping other parameters unchanged to obtain optimized wind turbine generator position coordinates so as to create a mooring system design database, and determining the position coordinates of each wind turbine generator according to the established wake flow model of the floating type offshore wind power plant and the offset of the position of each wind turbine generator. And calculating and outputting the generating capacity of each wind generator set and the position information of the layout until the position information of the layout with the minimum wake flow loss and the maximum generating capacity of the floating type offshore wind power plant is found, so that the output power of the wind power plant is improved and the fatigue load of the wind generators is relieved.

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.

The utility model belongs to the technical field of wind turbine generator tower maintenance, and particularly relates to a wind turbine generator tower outer wall moving device which comprises a cabin, blades installed on an output shaft of the cabin, a tower body fixedly connected to the bottom face of the cabin and a moving assembly arranged on the surface of the tower body. The moving assembly comprises a platform installed on the surface of the tower drum body, two limiting plates are fixedly connected to the surface of the platform, two winches are fixedly connected to the portion, facing the cabin, of the platform, traction ropes are arranged on the surfaces of the winches, and two hanging wheels matched with the winches are fixedly connected to the bottom face of the cabin. When the outer wall and the blades of the tower drum are maintained and checked by workers, the workers can stably move up and down through the electric traction rope to complete work tasks, and the danger coefficient is greatly reduced.

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 utility model provides a wind power deflection bearing sealing structure which comprises a first bearing ring, a second bearing ring and a sealing structure, and the sealing structure is arranged between the first bearing ring and the second bearing ring. The sealing structure is a double sealing ring consisting of an inner sealing ring and an outer sealing ring; the inner sealing ring is of a double-lip type sealing structure. The outer sealing ring can prevent the inner sealing ring from being directly exposed in the environment, invasion of soil, dust and sand is avoided, the aging progress of the sealing ring is slowed down, and the service life of the sealing ring is prolonged; the outer seal can improve the sealing performance of the bearing, guarantee the stock of lubricating grease in the bearing, improve the operation stability of the bearing and reduce the maintenance cost.

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 electric pulse deicing control method for the wind turbine blade comprises the following steps that S1, deicing points are arranged on the windward side of the wind turbine blade, each deicing point is provided with an electric pulse deicing device, and each electric pulse deicing device comprises a magnet exciting coil and a skin, the skin is fixed on the surface of the fan blade at a deicing point, the excitation coil is completely covered with the skin, and the electric pulse deicing device is controlled by a deicing control module; wherein the deicing control module adjusts the magnitude of excitation current input to the excitation coil by adjusting the duty ratio of a PWM control signal; s2, environment parameters of the environment where the wind turbine blade is located and icing thickness detection information of the wind turbine blade are obtained, the environment parameters are input into a deicing control module, and the deicing control module determines the duty ratio of a PWM control signal according to the corresponding relation between the environment parameters and the icing thickness and the duty ratio of the PWM control signal; and S3, the deicing control module works according to the determined duty ratio of the PWM control signal, and outputs a corresponding excitation current to the excitation coil.

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 power, in particular to a wind generating set tower drum repairing and reinforcing device and method. The stiffening beam is annular; the magnetic attraction assembly comprises mounting bases and magnetic attraction blocks, the mounting bases are arranged on the outer side of the reinforcing beam in a surrounding array mode, the magnetic attraction blocks are detachably connected with the mounting bases, and the magnetic attraction blocks are used for being attracted to the inner wall of the tower drum. The device has the advantages that the device is adsorbed on the inner wall of the topped round tower drum through the magnetic attraction blocks, then the magnetic attraction blocks are connected to the reinforcing beams through the mounting bases, the geometric defect positions of the tower drum are supported by the reinforcing beams through the magnetic attraction blocks, meanwhile, the reinforcing beams are fixed to the tower drum through the magnetic attraction blocks, the strength of the repaired geometric defect positions is enhanced, and the repairing quality of the tower drum is improved. And the tower drum is prevented from generating geometric defects again.

The utility model discloses a crane for self-lifting wind power operation and maintenance, which comprises a plurality of self-lifting devices, a mast crane and a plurality of pulley blocks, a base is arranged on the mast crane, and the mast crane is sleeved on a fan tower drum through the base; the pulley block comprises a fixed pulley block and a movable pulley block, the fixed pulley block is mounted at the bottom of the fan cabin, and the movable pulley block is mounted on the base; the self-lifting device comprises a steel wire rope used for lifting an object, and one end of the steel wire rope is fixed to the bottom of the fan cabin and extends from the bottom of the fan cabin to be wound on the fixed pulley block and the movable pulley block. The mast crane ascends or descends along the fan tower along with winding and unwinding of the steel wire rope. According to the utility model, the tower barrel structure does not need to be changed, the hoisting capacity is stronger, each structure is simple to disassemble and assemble, each part is convenient to enter and transport after being disassembled and assembled, the cost is effectively reduced, and the adaptability of the crane to various working conditions is improved.

The present application discloses a wind turbine anti-icing system based on thermal energy storage materials, which relates to the technical field of wind turbine anti-icing. The system includes: a phase change material storage box and a heating airflow subsystem; a solid-liquid phase change material is stored in the phase change material storage box, which is used to absorb and store the heat of the liquid working fluid when the external environmental conditions of the gearbox lubricating oil heat dissipation subsystem, the converter liquid cooling heat dissipation subsystem and the wind turbine liquid cooling heat dissipation subsystem are non-icing conditions; the heating airflow subsystem is used to heat the fan blades in the wind turbine using the heat stored in the solid-liquid phase change material when the external environmental conditions are icing conditions, so as to achieve anti-icing of the fan blades. The present application can improve the energy utilization rate of the wind turbine anti-icing system and reduce costs.

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.