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Wheel-type piezoelectric beam generator based on clamping limit

A technology of piezoelectric beams and generators, applied in the direction of generators/motors, piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, etc., can solve problems such as inability to apply, and achieve novel structure, axial Small size, easy installation and maintenance

Inactive Publication Date: 2013-08-14
ZHEJIANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a clamping and limiting wheeled piezoelectric beam generator to solve the problem that the existing rotary piezoelectric generator needs external fixed support and cannot be applied, so as to meet the power supply demand of the wind turbine blade monitoring system

Method used

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  • Wheel-type piezoelectric beam generator based on clamping limit
  • Wheel-type piezoelectric beam generator based on clamping limit
  • Wheel-type piezoelectric beam generator based on clamping limit

Examples

Experimental program
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Effect test

Embodiment Construction

[0015] The left end cover 1 and the right end cover 3 are respectively installed on the two ends of the cylinder wall 201 of the housing 2 by screws, and the inside of the bottom of the left end cover 1 and the right end cover 3 are respectively embedded with a limit ring-5 and a bearing 8; There are two annular discs 202 on the top, on which the limiting ring 2 6 is respectively installed by screws; between the left end cover 1 and the cylinder wall 202 of the housing 2, and between the right end cover 3 and the housing Metal substrates 401 are respectively crimped between the cylinder walls 202 of 2, and the piezoelectric wafers 402 bonded on both sides of the metal substrates 401 together constitute a piezoelectric vibrator 4, and the other end of the piezoelectric vibrator 4 is clamped in a limited Between the cusps of bit ring one 5 and limit ring two 6, the free end of the piezoelectric vibrator 4 is installed with a moving magnet 7 through screws; On the cover 1 and the...

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PUM

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Abstract

The invention relates to a wheel-type piezoelectric beam generator based on the clamping limit, which belongs to the technical field of new energy and power generation. A left end cover and a right end cover are installed on a shell through screws, and a limiting ring A and a bearing are respectively embedded in the bottoms of the left and the right end covers; the shell is provided with an annular disc for installing the limiting ring; a piezoelectric oscillator is pressed respectively between the left end cover and the shell and between the right end cover and the shell, the other end of the piezoelectric oscillator is clamped between the limiting rings, and the free end of the piezoelectric oscillator is provided with a movable magnet; and an excitation disc rotating shaft is installed on the left and the right end covers through a bearing, and a fixed magnet is embedded on an excitation disc body. The wheel-type piezoelectric beam generator has the advantages that the excitation disc is maintained relatively still by utilizing the centre-of-gravity shift characteristic, so that the fixed magnet which is installed on the excitation disc rotates relatively to the movable magnet which rotates along the piezoelectric oscillator, the piezoelectric oscillator is driven to generate the power, and no external fixed support is needed; the blade structure is unnecessary to change in the use, and convenience in installation and maintenance can be realized; and the piezoelectric oscillator is limited by the limiting rings, so that the reliability is high, and the effective velocity zone is wide.

Description

technical field [0001] The invention belongs to the technical field of new energy and power generation, and in particular relates to a clamping and limiting-based wheeled piezoelectric beam generator, which is used for power supply of a wind power generator blade monitoring system. 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 overall reliability and service life of the generator. Wind turbine blades usually work in a harsh environment, and their structural scale, weight and working load are very large. In addition to being damaged by irresistible natural disasters such as lightning strikes and earthquakes, natural corrosion, wear and fatigue stress, etc. Leaf damage is also inevitable. Production practice shows that one-third of the accidents during the operation of wind turbines are caused by blade damage, so the health monitoring of wind turbine blades is im...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/18
Inventor 阚君武李胜杰王淑云徐海龙曾平
Owner ZHEJIANG NORMAL UNIVERSITY
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