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Ice coating monitoring system and method for fan blade based on piezoelectric materials

A technology for fan blades and piezoelectric materials, which is applied in the field of fan blade ice coating monitoring systems based on piezoelectric materials, can solve problems such as load changes of power generation equipment, reduced power generation efficiency, mechanical failures, etc., and achieves low energy consumption and low power consumption. , the effect of simple structure

Inactive Publication Date: 2014-07-30
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The icing of fan blades will not only reduce the power generation efficiency and shut down, but also lead to changes in the load of power generation equipment and lead to mechanical failure and damage. Phenomena such as ice throwing will bring greater risks to personnel and equipment

Method used

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  • Ice coating monitoring system and method for fan blade based on piezoelectric materials
  • Ice coating monitoring system and method for fan blade based on piezoelectric materials
  • Ice coating monitoring system and method for fan blade based on piezoelectric materials

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Embodiment Construction

[0016] Such as figure 1 As shown, the piezoelectric driver or piezoelectric sensor according to the embodiment of the present invention includes a waterproof and insulating piezoelectric material 1, a shielded wire 5, and a connecting joint 6, and the same side of the piezoelectric material 1 is separated into a positive electrode 2 by a separation strip 3. and the negative pole 4, weld the two core wires at one end of the shielded wire 5 to the positive pole 2 and the negative pole 4 respectively, and connect the other end of the shielded wire 5 to the connecting joint 6.

[0017] The shape of the piezoelectric material 1 can be a cube, a circle, etc., and piezoelectric ceramic sheets and piezoelectric film sheets can be used, with or without flanging. When choosing to paste the piezoelectric material on the surface of the blade, the flanging piezoelectric ceramic sheet is preferred, because the electrodes are easy to paste on the surface of the blade structure after welding ...

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PUM

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Abstract

The invention discloses an ice coating monitoring system and method for a fan blade based on piezoelectric materials. The ice coating monitoring system comprises a piezoelectric actuator and a plurality of piezoelectric sensors, wherein the piezoelectric actuator and the piezoelectric sensors are fixed on the fan blade, and the piezoelectric sensors are used for measuring voltage sensing signals caused by stress waves transmitted by the piezoelectric actuator. The piezoelectric actuator is electrically connected with a signal generator for exciting the piezoelectric actuator, the piezoelectric sensors are electrically connected with a data acquiring system for acquiring voltage measurement signals of the piezoelectric sensors, and the data acquiring system is electrically connected with a computer for analyzing energy changes of wavelet packets of the voltage measurement signals. By means of the ice coating monitoring system and method, ice coating monitoring of blades of a wind power generator operating under weather with ice coating disasters in cold regions in winter can be achieved.

Description

technical field [0001] The invention relates to an ice coating monitoring method, in particular to a piezoelectric material-based fan blade ice coating monitoring system and method. Background technique [0002] As a new type of clean and sustainable energy, wind power has achieved rapid development worldwide. The development and utilization of wind energy resources in my country has developed rapidly in recent years, and the newly installed capacity ranks among the top in the world. The areas rich in wind resources in the south of my country are mostly located in mountainous areas, where the climate is cold and humid in winter, which is prone to freezing disasters. The wind farms in the cold and high-humidity regions of southern my country are vulnerable to freezing disasters. The icing of fan blades will not only reduce the power generation efficiency and shut down, but also lead to changes in the load of power generation equipment and lead to mechanical failure and damag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B7/06
Inventor 许斌卢方
Owner HUNAN UNIV
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