Wind driven generator blade deicing system and phase change microcapsule coating spraying process

By combining a swirl duct and a phase change microcapsule coating system, the problems of low heat transfer efficiency and de-icing blind spots caused by icing on wind turbine blades are solved, achieving a highly efficient and energy-saving de-icing effect.

CN121452136AActive Publication Date: 2026-02-03CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Patent Information

Application Number
CN202512012699.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-29
Publication Date
2026-02-03
Estimated Expiration
2045-12-29

AI Technical Summary

Technical Problem

The icing of wind turbine blades in cold and humid environments leads to a decline in aerodynamic performance. Existing hot air de-icing methods suffer from low heat utilization, low heat transfer efficiency, and de-icing blind spots.

Method used

The system employs a combination of heating modules, spiral guide ribs, and phase change microcapsule coatings. By guiding hot air through a swirling duct to form a forced swirling flow, and combining this with the phase change heat storage characteristics of the phase change microcapsule coating, uniform heat transfer and effective coverage are achieved.

Benefits of technology

It improves hot air utilization and heat transfer efficiency, shortens de-icing time, reduces energy consumption, and enhances the de-icing effect in all areas of the blades.

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Abstract

The invention provides a wind driven generator blade deicing system and a phase change microcapsule coating spraying process, and relates to the technical field of wind power generation equipment protection, the deicing system comprises a heating module, a spiral flow guide rib, a phase change microcapsule coating and a control module; the heating module comprises a heating piece and a fan communicated with the heating piece; the spiral flow guide rib is used for forming a rotational flow air duct, so that hot air formed by heating of the heating module forms rotational flow air flow; the phase change microcapsule coating is at least coated on the wall surface of the inner cavity of the blade; the control module is in communication connection with the heating piece and the draught fan and is configured to adjust the rotating speed of the draught fan and the heating power of the heating piece at least according to the state of the phase change microcapsule coating. The deicing system improves the heat transfer efficiency, enables hot air to effectively cover all areas of the blade, prolongs the residence time of the hot air in the inner cavity of the blade, and improves the hot air utilization rate. And the phase change microcapsule coating and the rotational flow airflow have a synergistic thermal effect, so that the temperature of the wall surface of the blade is effectively, quickly and uniformly increased, and the deicing efficiency is improved.
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