Self-generating power supply for wind turbine blade monitoring
A technology of wind power generator and self-generation, which is applied in the direction of generator/motor, friction generator, piezoelectric effect/electrostrictive or magnetostrictive motor, etc., and can solve the problem that the online monitoring technology of wind power generator blades has not been widely used. Application, unable to meet production needs and other problems, to achieve the effect of simple structure and incentive process, strong power generation and power supply capacity, and high reliability
Active Publication Date: 2021-10-15
大唐丰都新能源有限公司
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AI Technical Summary
Problems solved by technology
With the increasing length of wind turbine blades and the overall number of wind turbines, the previous method of relying on manual regular inspection and maintenance can no longer meet production needs
Therefore, various forms of wind turbine blade health status monitoring methods and corresponding self-generated power sources have been proposed. online monitoring technology has not been widely used
Method used
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Embodiment Construction
[0018] A self-generating power supply for monitoring wind turbine blades, mainly composed of a casing a, an end cover b, a cantilever shaft c, a piezoelectric vibrator d, a partition e, a pendulum ring g, a rolling body h, a fixed ring n, and an inertia block G constitute.
[0019] The cantilever shaft c is provided with flange c1, flat shaft c2 and pendulum shaft c3 in sequence from right to left. The angle Q between the flat shaft c4 and the pendulum shaft c5 in the same plane is called the inclination angle of the pendulum shaft; the flange c1 is installed on the On the blade Y of the wind power generator, the blade Y is installed on the main shaft Z of the generator; the vertical wall a1 of the housing a is installed on the flat shaft c2 through the bearing k and the retaining spring j, and the circuit board p is installed on the vertical wall a1 through screws; The end of the cylinder wall a2 of the body a is equipped with an end cover b through screws, the outer side of ...
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The invention relates to a self-generating power supply for wind power generator blade monitoring, which belongs to the field of piezoelectric power generation. The cantilever shaft is provided with a flange, a flat shaft and a pendulum shaft in turn from right to left. The flange is mounted on the blade of the wind turbine, the vertical wall of the housing is mounted on the flat shaft, the pendulum shaft is placed in the housing, and the shell wall The end is equipped with an end cover and an inertia block is installed on the outside. The angle between the flat axis and the pendulum axis in the same plane is called the inclination angle of the pendulum axis. A composite film composed of an electrode layer and a friction layer; the piezoelectric vibrator is formed by bonding the substrate and the piezoelectric sheet, and the piezoelectric vibrator is located on both sides of the separator and the substrate and the friction layer of the composite film are installed facing each other; the upper sleeve of the pendulum shaft There is a pendulum ring, and a dial ring is arranged on the outer edge of the pendulum ring, and the dial ring is located in the space surrounded by the partition plate and two groups of piezoelectric vibrators; the substrate and the piezoelectric sheet constitute a piezoelectric power generation unit, and the substrate and composite film constitute a triboelectric power generation unit , the piezoelectric generating unit and the friction generating unit are connected to the circuit board through different rectifiers.
Description
technical field [0001] The invention belongs to the technical field of new energy and power generation, and in particular relates to a self-generating power supply for wind generator blade monitoring. Background technique [0002] The blade is the key component of the wind turbine to receive wind energy and convert it into kinetic energy, which determines the reliability and service life of the generator. Because blades usually work in harsh environments, and their own structural scale, weight and working load are very large, in addition to being damaged by irresistible natural disasters such as lightning strikes and earthquakes, damage to blades caused by natural corrosion, wear and fatigue stress, etc. It is also inevitable. Practice has shown that one-third of the accidents that occur during the operation of wind turbines are caused by blade damage, so the health monitoring of wind turbine blades is urgent. With the increasing length of wind turbine blades and the overa...
Claims
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IPC IPC(8): H02N2/18H02N1/04
CPCH02N1/04H02N2/185
Inventor 张忠华柴君凌何晨阳张海琪金程苏玲阚君武程光明
Owner 大唐丰都新能源有限公司