Wang Long

Bio: Wang Long is an academic researcher. The author has contributed to research in topics: Turbine blade & Sound energy. The author has an hindex of 1, co-authored 3 publications receiving 4 citations.

Centrifugal wind turbine blade jet flow power increasing device

Abstract: The invention discloses a centrifugal wind turbine blade jet flow power increasing device. The centrifugal wind turbine blade jet flow power increasing device comprises a wind turbine blade. The windturbine blade is internally provided with a duct along a blade variable pitch axis of the wind turbine blade, and an air inlet hole is formed in the surface of a blade root of the wind turbine blade in a machined mode. A vent hole is formed in the surface of a blade tip of the wind turbine blade in a machined mode, and the air inlet hole and the vent hole both communicate with the duct. When the wind turbine blade rotates, pressure difference is generated at the blade root and the blade tip of the wind turbine blade due to the centrifugal force effect, part of air flow passing through the blade root and the blade tip of the wind turbine blade is sucked by the air inlet hole, so that separation flow at the blade root of the wind turbine blade is reduced; and the air flow sucked by the air inlet hole is discharged from the vent hole after passing through the duct, so that the formation of a tip vortex of the wind turbine blade is weakened or blocked, and the centrifugal wind turbine blade jet flow power increasing is realized. The centrifugal wind turbine blade jet flow power increasing device has simple structure and implementation, clear technical principle, low manufacturing cost,no maintenance and broad application prospects.

Viscous fluid energy consumption damping device for wind turbine blade

Abstract: The invention discloses a viscous fluid energy consumption damping device for a wind turbine blade. The viscous fluid energy consumption damping device comprises an outer sleeve. Two baffles are arranged in the outer sleeve and divide an inner cavity of the outer sleeve into a left transition cavity, a movable chamber and a right transition cavity, all of which are sequentially in seal fit. The movable chamber is filled with viscous fluid damping liquid. A pull rod penetrates through the outer sleeve, and a connector is fixedly connected with a blade tip of a wind turbine blade. A piston sleeves the pull rod to be fixed, the piston is located in the movable chamber, the outer surface of the piston and the inner surface of the outer sleeve are in seal sliding fit, the piston is provided with at least one damping hole, and the damping holes communicate with the two mutually-sealed cavities of the movable chamber. The viscous fluid energy consumption damping device is used on the wind turbine blade, large-degree deformation of the flexible blade can be reduced on the premise that the pneumatic appearance of the blade is not changed, and the blade is protected against vibration damage;meanwhile, the cost is reduced, and the work efficiency is guaranteed; and the structure is simple, installing is reliable, and therefore certain feasibility is achieved.

Wind turbine blade with noise reduction structure

Abstract: The invention belongs to the field of wind turbine noise reduction application, and particularly relates to a wind turbine blade with a noise reduction structure. The front edge of the wind turbine blade selects the noise reduction structure as a filling material, and the noise reduction structure comprises a small-hole honeycomb layer, a large-hole honeycomb layer and a sound wave reflecting layer which communicate with one another. According to the a wind turbine blade, based on the energy conversion theory, noise enables gas to move in a honeycomb core, the viscidity effect is generated, energy conversion is generated in the process, sound energy is converted into heat energy and deformation energy, and finally, the energy is dissipated in a cavity of the blade. The aerodynamic shape ofthe wind turbine does not need to be changed, on the premise that the aerodynamic performance of the wind turbine is not changed, the noise of the wind turbine is effectively suppressed, and the windturbine blade is low in mass, simple in structure, free of maintenance and economical and has the potential social value and economic value.

Blade tail jet-propelled type vertical axis wind turbine

Abstract: The invention relates to the wind power generation industry, in particular to a blade tail jet-propelled type vertical axis wind turbine. The blade tail jet-propelled type vertical axis wind turbine comprises a vertical shaft, a blade supporting rod and blades, wherein the vertical shaft and the blade supporting rod are provided with air injection pipes communicating with each other, the blades are vertically provided with air channels and a plurality of air injection holes formed in the horizontal direction in parallel, and the air injection holes are formed in the symmetrical central axes ofthe blades, and lead to the tail edges of the blades; and the air injection pipes, the air channels and the air injection holes all communicate with one another to form an air flow channel, an air pump is arranged outside the wind turbine, an air outlet of the air pump is connected with the air injection pipes of the vertical shaft, the high-pressure air flow is sprayed out through the air injection holes of the blades from bottom to top to form a jetting air flow. According to the blade tail jet-propelled type vertical axis wind turbine, the tail parts of the blades are actively controlled to generate the jetting air flow, a reverse pushing force is formed to act on the wind turbine in the forward direction, the lift-drag ratio of the wind turbine is improved in the running range of thewind turbine, the power coefficient of the wind turbine is improved, and the power generation efficiency is enabled to be maintained at a stable level.

Wind power generation equipment capable of increasing wind quantity by utilizing rotating force

Abstract: The invention relates to the technical field of wind power generation, and discloses wind power generation equipment capable of increasing wind quantity by utilizing rotating force The wind power generation equipment comprises a vertical rod, wherein the surface of the vertical rod is movably connected with a rotating shaft, the surface of the rotating shaft is sleeved with a shaft sleeve, the surface of the shaft sleeve is fixedly connected with blades, the blades are internally provided with connecting rods, the surfaces of the connecting rods are fixedly connected with gears, the surfacesof the gears are meshed with rotating bodies, the inner portion of the rotating bodies are movably connected with deflection wheels, and the surfaces of the rotating bodies are fixedly connected withdamping plates According to the wind power generation equipment, wind direction plates are pushed to expand towards the two sides, as shown in the figure 5, when the blades rotate to the air-free surface, the position of the rotating bodies and the wind direction plates is unchanged, at the moment, the wind direction plates lose the force of wind blowing, the force of blowing air before releasingbegins to be released, namely a force pushing the blades to rotate is generated, in the releasing process, and the wind direction plates lose the supporting force of inflating rods to begin to contract, and as shown in the figure 7, so that the effect of increasing the rotating force of the driving blades is achieved

Horizontal-shaft wind turbine blade

Abstract: The invention discloses a horizontal-shaft wind turbine blade. The blade comprises an airfoil-shaped blade body, an airflow outlet, and a high-pressure airflow pipeline, wherein the airflow outlet isarranged at the pressure surface of the blade tip; and the high-pressure airflow pipeline is arranged inside the blade, one end of the high-pressure airflow pipeline communicates with the airflow outlet, and the other end of the high-pressure airflow pipeline passes through the blade body, a blade neck and a blade root. The airflow outlet is arranged on the basis of the original blade, the decrease of blade strength caused by airflow disturbance is avoided, and the production cost and blade weight are reduced.

Blade boundary layer flow control system and wind generating set comprising same

Abstract: The invention discloses a blade boundary layer flow control system and a wind generating set comprising same. The blade boundary layer flow control system comprises a fan blade, a first guide sectionand a second guide section, wherein the fan blade is an elastic body, and is provided with a force absorbing surface, a pressure surface, a blade front edge and a blade rear edge; a blade cavity is formed inside the fan blade; the first guide section communicates with the blade cavity; and the second guide section communicates with the first guide section, the second guide section is arranged at one side, close to the blade rear edge, of the force absorbing surface, and the second guide section is provided with a guide hole. According to the blade boundary layer flow control system disclosed by the invention, gas flow generating equipment such as an extra gas pump and a gas extractor are not used, air flow generated by elastic deformation of the fan blade in an operation process of the wind generating set is only utilized in case of not additionally consuming energy to perform flow control on a blade boundary layer, so that blade boundary layer separation is restrained, fan blade speedreduction is delayed, pneumatic performance of the fan blade is improved, and the effect of increasing the power generation amount of the wind generating set is improved.