Reinforcement repair method for blade trailing edges of wind turbine

Abstract

The invention discloses a reinforcement repair method for blade trailing edges of a wind turbine, and belongs to the technical field of wind turbine blades. The method is characterized in that a large-thickness blunt trailing edge of a prefabricated bonding flange, a transition trailing edge of a prefabricated foam wedge-shaped block and a directly-bonded sharp trailing edge of a blade windward side shell and a leeward side shell in a double-face shell die assembly bonding forming mode are adopted, according to bonding cracking damage of the three trailing edge forms, key repair parameters of each trailing edge form are formulated, and the reinforcement repair method of structural adhesive injection and an outer reinforcement layer pasting method is adopted. By means of the method, aloft work repair implementation of in-service blade trailing edge bonding cracking can be achieved, the operation risk of in-service wind turbine blades is reduced, the operation and maintenance cost is reduced, the blade breakage accident caused by major structural damage induced by trailing edge bonding cracking is avoided, the key technology of trailing edge bonding failure damage repair is broken through, an important repair parameter basis is provided for in-service wind turbine blade trailing edge damage repair, and the safe service full life cycle of the in-service wind turbine blades is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of wind turbine blades, and in particular relates to a method for reinforcing and repairing the trailing edge of wind turbine blades. Background technique [0002] Due to the complex operating environment of wind turbines, safety accidents caused by wind turbine failures are increasing day by day. Frequent failures of wind turbines will not only cause insufficient output performance of wind turbines, low efficiency of wind farm operation capacity, but also increase wind turbine downtime losses and operational costs. maintenance cost. Blades are the components that cause the longest downtime of wind turbines, the highest probability of downtime, and the highest maintenance costs. At present, domestic wind turbine blades in service are basically made independently of the windward side and the leeward side, and then solidified and formed after being bonded by structural glue. At this time, the leading edge of...

AI Technical Summary

Problems solved by technology

Trailing edge bonded area does not reach expected service life, causing various running damages, resulting in downtime, repair or even blade replacement

It is very meaningful to study the repair method for trailing edge cracking of wind turbine blades with complex operating environment. At present, there is no mature repair method for trailing edge cracking damage at home and abroad.

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