Ice-melting heating structure of wind turbine blade and manufacturing method thereof

A technology for wind power generators and heating structures, which is applied to wind power generators, wind power generation, wind power generators in the same direction as the wind, etc. It can solve the problems of difficult laying process of hot air pipelines and large waste of heat, so as to avoid deformation, The effect of prolonging the service life and preventing the blades from freezing

Active Publication Date: 2018-07-13
东方电气风电股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the waste of heat is large, and the hot air pipeline laying process is difficult

Method used

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  • Ice-melting heating structure of wind turbine blade and manufacturing method thereof
  • Ice-melting heating structure of wind turbine blade and manufacturing method thereof
  • Ice-melting heating structure of wind turbine blade and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0044] Example 1 Overall perfusion process

[0045] Including the following steps:

[0046] (1) Before pouring the shells of the upstream and downstream surfaces of the blades, lay low-density bidirectional glass fiber cloth, wire mesh 5, high-density bidirectional fiber cloth 4, and carbon crystal electric heating film 3 in the mold in sequence , corresponding to the ice-covered area, the temperature sensor 2 is arranged on the carbon crystal electrothermal film 3, and the lightning current lead 13 of the wire mesh 5, the power line 9 of the carbon crystal electrothermal film 3, and the signal line 8 of the temperature sensor 2 are all brazed Welded, wherein, the power line 9 of the carbon crystal electric heating film is welded with the electrode 11 of the carbon crystal electric heating film, and the lightning current lead 13 is directly welded with the copper foil shroud 6 of the wire mesh 5; Core;

[0047] (2) Vacuumize and infuse resin together to form, and wire mesh, ...

example 2

[0051] Example 2 Artificial hand lay-up process

[0052] Including the following steps:

[0053] (1) Use molds to infuse the shell on the upstream side, the shell on the downstream side, and the shear-resistant web of the blade respectively, then assemble and bond, close the mold for heat preservation, and maintain pressure until the adhesive is completely cured, then the mold is demoulded, and the blade is formed ;

[0054] (2.) Drill the holes of the carbon crystal electric heating film power line 9, the temperature sensor signal line 8, and the bolt 7 of the lightning protection device on the shell 1;

[0055] (3) Install the temperature sensor 2 in the ice-covered area of ​​the leading edge of the blade shell 1 and braze the connection with the signal line 8;

[0056] (4) Apply an adhesive on the surface of the ice-coated area at the front edge of the blade shell 1, and then spread the carbon crystal electric heating film 3 with an area equivalent to the surface of the i...

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Abstract

The invention discloses an ice-melting heating structure of a wind driven generator blade. The ice-melting heating structure is characterized in that the wind driven generator blade is provided with a carbon crystal film heating device; the carbon crystal film heating device comprises a carbon crystal electrothermal film, temperature sensors and a heating controller; the carbon crystal electrothermal film is laid on an ice-coated zone of the front edge surface of a shell and used for heating the ice-coated zone of the front edge of the shell so as to achieve ice melting and icing prevention; the temperature sensors are arranged under the carbon crystal electrothermal film, correspond to the ice-coated zone, and are used for detecting the temperature of the ice-coated zone of the front edge of the shell; and the heating controller is arranged in a wind driven generator control system and is used for adjusting the heating electric power of the carbon crystal electrothermal film according to the temperature, detected by the temperature sensors, of the ice-coated zone of the front edge of the shell, so that the temperature of the ice-coated zone of the front edge of the shell is constantly kept at a set value, and the set value is slightly greater than the melting point of ice and is normally higher than zero DEG C but lower than or equal to two DEG C. A lightning protection device is further arranged, so that the blade is protected against a lightning stroke.

Description

technical field [0001] The invention relates to a blade of a wind power generator, in particular to an ice-melting heating structure of the blade and a manufacturing method thereof. Background technique [0002] When wind turbines operate in cold climates, the surface of the blades of the wind turbines usually has serious ice coating in winter, and the aerodynamic shape of the blades changes significantly after icing, which will seriously affect the aerodynamic efficiency of the blades and reduce the power generation efficiency of the wind turbine. After icing, the load of the unit and the blades will also increase. When the loads and mass moments of the three blades differ to a certain extent, the vibration of the unit will be caused, which will affect the safe and stable operation of the unit. Usually, for the safe operation of the unit, the unit will stop running when the blades are seriously iced, so the icing of wind turbine blades will cause serious loss of power gener...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D80/40F03D80/60F03D80/30F03D1/06
CPCF03D1/06F05B2260/20Y02E10/72Y02P70/50
Inventor 羊森林王其君黄永东李杰王锋薛浩鹏赵萍钟贤和曾明伍
Owner 东方电气风电股份有限公司
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