Removable Rotor Blade Tip with Guide and Locking Mechanism

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Solution Overview

Problem

Existing rotor blades with angled tips are delicate and difficult to handle during transportation and manufacturing, such as during painting processes, and are susceptible to damage, while also posing challenges in easy replacement if damaged in operation.

Innovation Solution

A removable rotor blade tip designed as an independent portion with a connecting mechanism featuring guide and locking elements, allowing for secure attachment and detachment from the rotor blade, enabling easy handling, transportation, and on-site replacement, and incorporating an aerodynamic profile for reduced sound emissions and lightning protection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-generated harmful factors

If rotor blade tips are angled to reduce edge turbulence and sound emissions, then aerodynamic performance and noise reduction are improved, but handling and transportation become more difficult and the risk of damage increases

Engineering Contradiction:
Improvesound emissionsVSAvoidhandling during transportation
Core Design Contradiction:
Object-generated harmful factorsVSEase of operation

Solution Approach 1:

The rotor blade tip is separated from the rotor blade as an independent removable portion. This segmentation allows the tip to be detached during transportation to simplify handling, and reattached at the installation site to provide the aerodynamic benefits and noise reduction, thus resolving the contradiction between noise reduction and ease of handling.

Inventive Principle:
Principle #1Segmentation

2Object-generated harmful factors

If rotor blade tips are angled to reduce edge turbulence, then aerodynamic performance is improved, but the rotor blades become more susceptible to damage during transportation

Engineering Contradiction:
Improveedge turbulenceVSAvoidsusceptibility to damage
Core Design Contradiction:
Object-generated harmful factorsVSReliability

Solution Approach 1:

The angled tip portion is extracted as a separate removable component from the rotor blade. During transportation, the tip can be removed to prevent damage, while at the installation site it is reattached to provide the aerodynamic performance and reduce edge turbulence, thus resolving the contradiction between aerodynamic performance and reliability.

Inventive Principle:
Principle #2Taking out (Extraction)

3Object-generated harmful factors

If rotor blade tips are permanently attached to reduce edge turbulence, then aerodynamic performance is improved, but replacement of damaged tips becomes difficult

Engineering Contradiction:
Improveedge turbulenceVSAvoidreplacement of damaged tips
Core Design Contradiction:
Object-generated harmful factorsVSEase of repair

Solution Approach 1:

The connection between the rotor blade tip and the rotor blade is made dynamic rather than static. The tip can be detachably connected using mechanisms such as locking elements, allowing it to be securely attached during operation to reduce edge turbulence, and easily removed and replaced if damaged, thus resolving the contradiction between aerodynamic performance and ease of repair.

Inventive Principle:
Principle #15Dynamics

Data Source

PatentUS9371817B2Removable rotor blade tip
Publication Date: 2016.06.21 WOBBEN PROPERTIES GMBH
  • US9371817B2 patent drawing
  • US9371817B2 patent drawing
  • US9371817B2 patent drawing

AI summary

One or more embodiments are directed to a rotor blade tip for a rotor blade, in particular for a rotor blade of a wind power installation, which is in the form of an independent portion which can be connected to the rotor blade and has a first connecting surface directed in the direction of the rotor blade to be connected. For making the connection to the rotor blade provided at the connecting surface are first guide element with a guide direction when making the connection to the rotor blade and first locking element for fixing the rotor blade tip to the rotor blade as first component parts of a connecting mechanism.