156 results about "Wind force" patented technology

The invention provides a gust-oriented wind generating set anti-overspeed control method and device and a medium, and belongs to the field of wind generating set control. The method comprises the following steps: acquiring real-time wind speed data and generator speed data; determining whether to enter a gust mode of the wind generating set according to the real-time wind speed data; under the condition that the wind generating set enters the gust mode, the minimum pitch angle of operation of the wind generating set is adjusted to be the minimum pitch angle of operation of the gust mode; calculating generator speed acceleration according to the generator speed data; determining whether to enter an acceleration anti-overspeed control strategy according to the generator rotating speed data and the generator rotating speed acceleration; and under the condition that it is determined that the acceleration anti-overspeed control strategy is entered, the preset variable-pitch rate is superposed on the normal variable-pitch rate. The pitch angle of the wind generating set in operation is increased when the wind generating set enters the gust mode, so that the attack angle margin of the blade can be kept in a safe range, and after the acceleration overspeed prevention control strategy is entered, the preset variable pitch rate is superposed on the normal variable pitch rate.

The utility model provides guide rail type vertical axis wind power generation equipment. The lifting force blades generate lifting force under the action of wind to push the rail moving mechanism to annularly move along the annular rail, then the driving shaft is pulled to rotate through the traction rope, and the driving shaft enables the generator to generate electricity through the step-up gear box. A cantilever beam structure in which blades and a vertical shaft are directly connected in existing vertical shaft wind power generation equipment is avoided, the driving shaft does not bear cantilever torque any more, the requirement for the strength of the driving shaft is greatly lowered, the size and height of the driving shaft are reduced, an overlong vertical shaft can be omitted, the material cost is greatly lowered, machining and installation are easy, and the service life of the driving shaft is prolonged. The number of the lifting force blades and the number of the track moving mechanisms are designed according to the unit power, the larger the diameter of the annular track is, the larger the number of the lifting force blades and the number of the track moving mechanisms are, and then the power generation efficiency is improved.

The invention discloses a high-altitude parabolic positioning traceability analysis method and system, and particularly relates to the technical field of positioning traceability. Motion parameters of an object are calculated by adopting a multi-frame image analysis method, rotary motion is detected by utilizing a deep learning algorithm, if rotation exists, a Magnus effect compensation model is introduced to correct trajectory calculation, meanwhile, wind speed and wind direction data are collected in real time, airflow change is simulated in combination with a computational fluid dynamics model, and the influence of wind power on the trajectory is corrected. Based on the corrected trajectory data, the initial throwing position of the object is reversely deduced in combination with a building three-dimensional structure model, a target person in charge is determined, and a complete traceability report is generated by comparing an analysis result with a monitoring video, so that the accuracy and traceability of traceability analysis are ensured. The method can effectively reduce the calculation error caused by the rotation effect, wind field interference and other factors, improves the precision of high-altitude parabolic traceability, and provides a scientific basis for responsibility determination.

The invention relates to the technical field of centrifugal fans, and discloses an adjustable centrifugal fan which is used for solving the problem that external wind power affects indoor air conveying of a pipeline type centrifugal fan. The thrust of the power ring to the outer wheel discs is changed through the thrust of external wind power to the wind shields, the distance between the two outer wheel discs is reduced, the extrusion force of the outer wheel discs enables the connecting shafts on the outer sides of the blades to move in the chutes, and therefore the inclination angles of the blades are increased, the wind pressure of gas conveyed by the impeller is increased, and the reverse wind pressure of the external wind power is balanced; gas backflow caused by reverse wind pressure of external wind power is prevented; the inclination angle of the blade is changed by changing external wind power, so that the blade drives the connecting shaft on the inner side of the blade to rotate, the rotating connecting shaft drives the winding wheel to rotate synchronously, the winding wheel winds the steel wire rope, and the steel wire rope pulls the scraping rod to clean the surface of the blade. And the situation that dust of different masses is left on the multiple blades, and consequently vibration occurs when the impeller rotates is prevented.

The utility model discloses a yaw brake of a wind generating set and the wind generating set, and relates to the technical field of wind power equipment, the yaw brake comprises a caliper and a brake mechanism, the caliper is provided with a brake groove, the brake groove is used for allowing a yaw gear ring of the wind generating set to extend into from a notch, and a containing channel is further formed in the caliper; the brake mechanism comprises a brake assembly and a force sensor; the brake assembly comprises a friction plate, a disc spring assembly and an adjusting piece which are sequentially arranged in the vertical direction. The friction plate is located at the top end of the containing channel and partially stretches into the brake groove to abut against the yaw gear ring. The force sensor is located in the containing channel and abuts against the portion between the friction plate and the disc spring assembly. According to the yaw brake, the force sensor is arranged between the friction plate and the disc spring assembly, whether the disc spring assembly provides enough elastic acting force or not can be reflected, and therefore whether the yaw brake breaks down or not is judged, maintenance can be conducted in time if the yaw brake breaks down, and losses are avoided.

The invention provides a wind generating set main shaft bearing interference magnitude adjusting device and method. The wind generating set main shaft bearing interference magnitude adjusting device is used for being installed in a wind generating set main shaft and comprises a center supporting assembly; the expansion force applying assembly is installed on the center supporting assembly, the expansion force applying assembly is provided with an expansion force applying part, and the expansion force applying part is used for applying expansion force for increasing the shaft diameter to the inner wall of the main shaft of the wind generating set; and the expansion force maintaining assembly is installed on the center supporting assembly, the expansion force maintaining assembly is provided with an expansion force maintaining part, and the expansion force maintaining part is used for keeping the shaft diameter of the main shaft of the expanded wind generating set unchanged. The problem of ring running of the main shaft bearing can be solved, and better execution performance is achieved.

The invention relates to the technical field of wind driven generators, in particular to a hydraulic control unloading system of a wind driven generator set. One end of the oil cylinder abuts against a fixed base, and the other end of the oil cylinder abuts against an upper end connecting plate through a reset spring; the two sides, away from the end face of the connecting and fixing base, of the oil cylinder fixedly communicate with the hydraulic pipe, and a guide rod is arranged at the end, away from the oil cylinder, of the hydraulic pipe. Two side walls of the oil cylinder are connected with oil pipes which are provided with electromagnetic flow valves; a push rod cavity is formed between the two hydraulic pipes, a push rod is installed at one end of the push rod cavity, and a pre-tightening spring is arranged between the push rod and the push rod cavity. The end, away from the push rod cavity, of the push rod penetrates through the upper end connecting plate, and movement between the push rod and the upper end connecting plate is limited through a check block. Accurate control and feedback adjustment of the pre-tightening force of the floating end bearing are achieved, meanwhile, the device is easy to install and maintain, and the overall operation stability of the wind generating set can be remarkably improved.

The invention belongs to the technical field of overload and unbalanced load detection, and particularly relates to a container weighing and overload and unbalanced load detection method and system, and the method comprises the steps: carrying out the curve fitting of the stress data of each corner of a container at all moments in a hoisting detection process, obtaining a peak value region and a valley value region, and obtaining the stress period measurement of each corner of the container; performing self-correlation analysis on the acceleration data of the container in each direction in the hoisting detection process, and determining the acceleration periodical measurement of the container; the influence degree of the wind speed data on the stress data and the acceleration data in the hoisting detection process is analyzed, and the wind power influence coefficient of the container in the hoisting detection process is determined; the average stress data of each angle of the container after compensation is obtained, the unbalance loading value of the container is obtained according to the moment balance principle, and overload and unbalance loading detection is conducted on the container. The invention aims to improve the precision of overload and unbalanced load detection of the container.

The invention belongs to the technical field of additive manufacturing equipment manufacturing, and particularly relates to a wind field detection device for additive manufacturing equipment, which comprises a transverse moving part, and a guide part is arranged on the left side of the transverse moving part; a wind power detection component is arranged at the top of the movable base; the movable base comprises a bearing chassis, and a girdling groove is formed in the lower surface of the bearing chassis. The wind sensor is driven to perform free plane sliding motion in the wind power detection equipment through the transverse moving part, the guiding part and the moving base, so that wind power at different point positions is tested, and in the wind power testing process, the moving base can be tightly attracted to the upper surface of the long sliding rail through the magnetic force of the built-in magnetic ring, so that the wind power detection equipment is more convenient to use. A reinforcing effect is achieved on the moving roller which freely slides, so that the problem that the wheel body at the bottom of the equipment is easy to slip, even shift or topple under the action of wind power when the wind power of a tested wind field is relatively large is avoided.

The invention relates to the technical field of wind power generation tests, and discloses a wind power tower load loading test device and an evaluation system.The wind power tower load loading test device comprises a test bed, a loading structure and a load actuation structure; by arranging the loading structure and the load actuating structure, vertical axial force, bending moment, horizontal shearing force and torque can be applied to a test piece at the same time, and the test device is closer to the actual stress working condition compared with a traditional loading mode, so that the accuracy and reliability of test data are improved; the first actuator is arranged perpendicular to the upper end face of the loading piece so as to simulate the axial load and bending moment effect borne by the wind power tower in the operation process. The second actuator is arranged perpendicular to the side face of the loading part so as to apply shearing force and torque, multi-dimensional combined loading is achieved, and mechanical property analysis of complex load combination is facilitated; the loading mode is controlled through the actuator, the controlled and accurate load applying process is achieved, manual intervention is reduced, and the test efficiency and consistency are improved.

The invention relates to the technical field of ship manufacturing, in particular to a ship sailing power assisting device which comprises a power assembly, a driving assembly, a power transmission assembly and a driving assembly. The power assembly comprises a base, a cavity formed in the inner wall of the base and a rotary drum installed at the end of the cavity; the power assisting assembly comprises a sleeve installed on the outer wall of the rotary drum, a power assisting piece arranged on the outer wall of the sleeve and a pushing piece installed in the sleeve; in the low-wind-speed environment, the power assisting part can be unfolded on the outer wall of the sleeve under the action of the pushing part, the fan blades on the power assisting part capture wind energy through the inner arc face and drive the rotary drum to rotate, energy consumed by rotation of the rotary drum is reduced, a generator is driven to generate electricity, power is supplied to a ship electric power system, and the load of a main engine is reduced; the power assisting part can be folded inwards under the action of wind power and tightly attached to the outer wall of the sleeve again, direct acting force of wind on the power assisting part during unfolding when the wind speed is too high is avoided, the risk that a ship inclines due to uneven stress is reduced, and sailing safety of the ship in the high-wind-speed environment is guaranteed.

A method and system for offshore wind power monitoring, which relate to the technical field of wind power equipment. The deformation amount of the blade is measured by a blade deformation measuring device, the rotational speed of the impeller is measured by an impeller rotational speed measuring device, the wind direction is measured by a wind direction measuring device, and the analysis module analyzes the deformation amount of the blade, the rotational speed of the impeller and the wind direction. Furthermore, the first wind force value is determined through the deformation amount of the blade, the second wind force value is determined through the rotational speed of the impeller, and by comparing the first wind force value and the second wind force value, the accuracy of the currently measured wind force value is determined. If the difference between the first wind force value and the second wind force value is less than a preset value, it is determined that the current wind force value is accurate enough.

[Problem] To provide a power generation system having a small number of components and a simple structure. [Solution] In a power generation system EPS, a first compartment 3 and a second compartment 4 provided in a main structure 1 are partitioned by first and second one-way throttle valves 5 and 6. Provided in a boundary part between the two compartments is a rotary shaft 7 rotatable between a first transition position and a second transition position in each of which up-and-down positions are reversed. The first compartment 3 is heated by a heat source and rotates around the rotary shaft 7 due to a weight difference based on a flow of a gas caused by differential pressure between the first compartment 3 and the second compartment 4. Power generation uses one or both of the flow of the gas (wind force) and rotational force occurring on such occasion.

The invention discloses wind power generation equipment with a measuring device, and belongs to the field of wind power generation. The wind power generation equipment comprises a wind power generator body, a cabin shell is arranged above the wind power generator body, a hub is arranged on the left side of the cabin shell, blades are rotatably connected to the outer surface of the hub, and a main shaft is fixedly connected to the right side of the hub; the main shaft penetrates through and is rotationally connected with the left side of the cabin shell, a pressure sensing device is slidably connected to the outer surface of the main shaft, a connecting column is fixedly connected between the pressure sensing device and the top of the inner surface of the cabin shell, and an electric push rod is fixedly connected to the bottom of the inner surface of the cabin shell. The pressure sensing device is arranged to detect the rotating stability of the main shaft, when the main shaft rotates unstably, the braking piece brakes the main shaft, and meanwhile, the angle of the blade can be adjusted to be parallel to the wind direction, so that pushing of wind power to the blade is reduced, and the effect of facilitating braking acceleration is achieved.

The embodiment of the invention provides an aerostat, an aerostat air operation control system and a wind power generation device, and the aerostat comprises an aerostat body which is in a streamline design, and the two ends of the aerostat body form a large head end and a small head end respectively; the steering part is arranged below the floating body, and the floating body can rotate around the steering part along with the change of the wind direction; the lifting force adjusting part is arranged above the floating body, the position of the lifting force adjusting part changes along with the change of the wind direction, and the lifting force adjusting part always has upward pulling force on the floating body. The lifting force adjusting part can adjust the pulling force on the floating body in real time according to the change of the wind force and direction, so that the floating body is always kept at a stable height and posture, meanwhile, the steering part enables the floating body to flexibly cope with the change of the wind direction, and the floating body is prevented from shaking or inclining due to the sudden change of the wind direction.

The present application provides a blade assembly and a wind power generation device. The blade assembly comprises a mounting shaft and a blade connected to the mounting shaft. The blade has opposite first and second surfaces along the circumferential direction of the mounting shaft. The first surface is recessed toward the second surface to form a force-bearing groove configured to bear wind impact, so that the blade assembly rotates. The torque of the blade Mθ=F0 × L=cos2 θFwind × L, where F0 is an equivalent resultant force applied to the blade, L is a moment arm, θ is a rotation angle, and Fwind is an equivalent wind force when θ is 0 degrees. The power of the blade P=Mθ × w=F0 × L × w, where w is an angular velocity. A discharge hole is provided at the bottom of the force-bearing groove, and is disposed near the mounting shaft and used for discharging air, so that the position of the equivalent resultant force is away from the mounting shaft, thereby lengthening the moment arm, increasing the torque, and improving the power.

The present invention discloses a method and a system for reducing the load of a wind turbine, which includes arranging a plurality of sensor strain gauges on the wind turbine blades and arranging two hydraulic cylinders inside the generator of the wind turbine; using the plurality of sensor strain gauges to measure the deformation of the blades in real time, and then calculating the magnitude and direction of the real-time wind load on the wind turbine blades according to the deformation; controlling the two hydraulic cylinders to apply thrust and reaction forces in the opposite directions to the generator housing and the gearbox housing respectively according to the magnitude and direction of the real-time wind load on the wind turbine blades, thereby generating two axial forces, and using the bending moments generated by the two axial forces respectively in the opposite direction of the wind load to offset the wind load, and finally realizing the reduction of the load on the top of the wind turbine tower. The present invention can effectively reduce the load on the top of the tower, and further achieve the purposes of reducing the weight of the tower and reducing the cost per kilowatt-hour of the wind turbine.

The invention relates to the technical field of wind power generation, and discloses a vertical shaft speed increaser of a wind driven generator, which comprises a gear box, the inner wall of the gear box is rotatably connected with a driving gear, a wind power rotating rod is driven by wind power to rotate so as to enable the driving gear to rotate, and by utilizing the tooth number difference between the driving gear and a driven gear, the vertical shaft speed increaser of the wind driven generator is formed. The speed-increasing rotation of the driven gear is achieved, so that the transmission speed-increasing rod is driven to output power at a higher rotating speed, the requirement of the wind driven generator for the high rotating speed is efficiently met, meanwhile, external force impact can be effectively buffered through the arrangement of the downward pressing column and the buffer spring, damage of impact force to the gearbox is reduced, and the damping rod in the base further ensures equipment stability. The cooling fan accelerates air flow in the gearbox, heat is discharged through the hole groove, the internal temperature is effectively reduced, the filter screen blocks dust and impurities, the interior is kept clean, part damage caused by high temperature or impurities is avoided, and the stability and reliability of equipment are further improved.

The utility model relates to a suspension type blowing separation device applied to the field of paper feeding mechanisms, which comprises an air blower and a mounting pipe fixedly connected with an air outlet of the air blower, the outer surface of the mounting pipe is fixedly connected with two telescopic hoses, and one end, far away from the mounting pipe, of each telescopic hose is fixedly connected with a fixed pipe. The upper ends of the fixing pipes are fixedly connected with flange plates, the upper ends of the two fixing pipes are jointly and fixedly connected with an air collecting box, and by the adoption of the fixing pipes and other structures, when heavy or large number of corrugated paper is blown, the wind power of an air blower does not need to be increased, the electric push rod drives the shielding ball to move up and down, the caliber of the adjusting groove is shielded, and the air blowing efficiency is improved. The size of a gap between the shielding ball and the caliber of the adjusting groove is changed, air pressure generated when airflow passes through the gaps of different sizes is different, the effect of separating corrugated paper of different thicknesses and quantities from the paper feeding mechanism is achieved, and therefore the electric energy consumption of the air blower is effectively reduced.

“301 METERS HIGH MULTI-STORE WIND TURBINE WITH DIFFERENT LARGE GENERATORS” which includes the following features: 1) The “301 Meter High Multi-Story Wind Turbine with Different Sized Generators” consists of up to 30 wind turbines mounted one above the other, all of which produce electricity independently of each other. 2) The “301 Meter High Multi-Story Wind Turbines” are powered by Simple Wind Fan Wheels (1). 3) To ensure that the wind fan wheels (1) always rotate in the desired direction, wind direction control assemblies (11) are installed. The wind direction control assemblies (11) consist of support tubes (12), ball bearings (14), gears (13), drives (15), and rollers (17). To ensure that the wind direction control assemblies (11) always rotate in the direction of the wind, wind direction measuring devices (16) are installed via the gears (13) and drives (15), which control the drives (15). 4) The wind direction control structures (11) guide the wind in a concentrated and bundled manner around the wind fan wheels (1), and terminate in a reduction (33), which increases the final speed of the wind. 5) For the load ALL LAMEN (8) from the wind fan wheels (1), the wind control constructions (11) are necessary. 6) The size of the wind fan wheels (1) depends on the size of the generators (27), i.e., on the required torque. 7) The wind speed changes with the installation height, therefore we can install different sized wind fan wheels, wind control structures, and generators with higher power. 8) By rotating every second wind direction control structure (11) around the horizontal axis (X) by 180 degrees, we achieve that every second wind fan wheel (1) rotates in the opposite direction. This leads to the generation of opposing forces, which is advantageous for the static design of the frame (22). 9) The “301 Meter High Multi-Story Wind Turbine” can also be built on a permanently anchored floating platform, or used as an OFFSHORE wind power plant. 10) The “301 Meter High Multi-Story Wind Turbines” utilize the high-altitude wind and REPLACE several existing turbines. 11) The “301 Meter High Multi-Story Wind Turbine” is to be manufactured directly at the installation site.

A gear speed change device. The gear speed change device comprises a first planetary gear train (100). The first planetary gear train (100) comprises a first ring gear (101), a first planetary carrier (102), first planetary gears (103), a solar idle gear (104), and a planetary idle gear (105). The planetary idle gear (105) and the first planetary gears (103) are all mounted on the first planetary carrier (102); each first planetary gear (103) comprises a pinion (103a) and a large gear (103b) coaxially connected to the pinion (103a); the planetary idle gear (105) and the pinion (103a) are both engaged with the inside of the first ring gear (101) and are both engaged with the outside of the solar idle gear (104); the pinion (103a) can float along the radial direction thereof relative to the first planetary carrier (102), and the maximum radial floating amount of the pinion (103a) is greater than the maximum radial floating amount of the planetary idle gear (105); and the large gears (103b) of at least two first planetary gears (103) are arranged in a staggered manner in the axial direction, and projections thereof on a plane perpendicular to the axial direction overlap with each other. The gear speed change device has a relatively high torque load density, and can give consideration to a small volume, a large transmission speed ratio and a high torque load capability.

The utility model discloses gantry type hoisting equipment for ship assembly in the technical field of gantry hoisting, which comprises a hoisting gantry and a moving seat capable of sliding left and right on the hoisting gantry, a plurality of groups of upper traction chains are fixedly mounted on the lower surfaces of two sides of the moving seat, and a balance component is arranged between the upper traction chains. The balance assembly can sense the magnitude of wind power at the upper end of the upper traction chain in a multi-angle mode and can enable the upper traction chain to be stressed and balanced in the opposite angle according to output of an internal draught fan, the balance assembly comprises an installation box fixedly installed at the upper end of the upper traction chain, and air outlet nozzles are arranged on the installation box except the two sides, connected with the upper traction chain, of the upper end and the lower end of the installation box. The output air volume of each group of air outlet nozzles can be singly adjusted; the wind power difference of different angles at the upper end of the hoisting traction chain is sensed through the sensor, and the air outlet amount of the air outlet nozzle is controlled through the variable-speed fan, so that the periphery of the traction chain is balanced under the wind power effect, and the traction chain is prevented from shaking under the wind power effect.

The utility model provides a large-span light floating debris blocking row structure, which relates to the technical field of hydropower and water conservancy, comprises concrete foundations symmetrically arranged on two banks, and a steel wire cable is arranged between the concrete foundations, and is characterized in that a trash blocking net and roller floaters are sequentially arranged on the steel wire cable at intervals; the roller floater comprises a bearing fixedly arranged on the steel wire rope, and a plurality of wheel blades are arranged around the bearing. Through the design of the roller floaters, when the wind speed of the water surface is high, the roller floaters installed on the steel wire ropes can roll on the water surface under the action of wind power, the resistance of water flow to the wind speed is enhanced, and then wind power reduction is achieved.

The present invention discloses an anti-sway wind-assisted rotor and an anti-sway monitoring method thereof, which belongs to the technical field of wind-assisted rotors. The anti-sway wind-assisted rotor comprises: a base; a tower body, the tower body is fixedly connected to the base; an outer cylinder, the outer cylinder is sleeved outside the tower body, and the outer cylinder is rotatably connected to the tower body; a limiting device, comprising a plurality of limiting wheels, the limiting wheels are rotatably mounted on the base, the plurality of limiting wheels are distributed along the outer circumference of the outer cylinder or the plurality of limiting wheels are distributed along the inner circumference of the outer cylinder, and the outer circumference of each limiting wheel can be rotatably attached to the side wall of the outer cylinder; a first adjusting device is provided with a plurality of first adjusting devices, the first adjusting devices are arranged one-to-one with the limiting wheels, and the magnitude of the force applied by the limiting wheels to the outer cylinder can be adjusted. The present invention improves the safety performance of the anti-sway wind-assisted rotor and avoids the occurrence of safety accidents.

The invention discloses self-locking wind power generation hydraulic equipment, and relates to the technical field of wind power generation equipment. Comprising a connecting device, the connecting device comprises a rotating device, the rotating device comprises a wrapping cylinder, the wrapping cylinder is used for being connected with a rotating shaft rod of the wind power generation equipment, and the outer wall of the shell device is rotationally connected with the outer wall of the rotating device; the outer wall of the braking device is fixedly connected with the outer wall of the shell device; the outer wall of the damping device is fixedly connected with the outer wall of the shell device, the braking device is arranged, a pushing ring is used for extruding a braking disc for preliminary braking, a linkage device and a limiting device are matched to achieve self-locking, pressure reduction caused by pressure leakage is prevented, and the linkage device can effectively limit the pressure of hydraulic oil; damage and oil leakage of friction device parts are avoided, equipment safety is improved, and the purpose of providing stable pressure output in the braking process is achieved by achieving self-locking of hydraulic equipment.

The invention relates to the technical field of wind power generation, and provides a braking device, a position adjusting system and a wind generating set, and the braking device comprises a gear braking part, a braking pressing block and an adjusting assembly. The gear brake part is in meshed connection with a to-be-braked structure; the brake pressing block is provided with a first pressure-bearing face and a second pressure-bearing face which are oppositely arranged, and the first pressure-bearing face abuts against or is separated from the gear brake part. The adjusting assembly is connected with the second pressure bearing face and used for adjusting the distance between the adjusting assembly and the gear braking piece. In this way, braking force can be provided for the to-be-braked structure through the gear braking part, then the to-be-braked structure can be prevented from moving relative to the braking device, and therefore the braking force provided for the to-be-braked structure can be increased. Therefore, the braking effect of the braking device on the to-be-braked structure can be improved, and the reliability of the braking device can be improved.