Segmented Scruton Helix Mounting for Wind Tower Oscillation Damping
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Solution Overview
Problem
Wind turbines experience unwanted oscillations during assembly due to wind, which can be challenging to dampen effectively, especially when the nacelle is not yet mounted on the tower.
Innovation Solution
A segment for a Scruton helix that can be easily and reliably mounted on a wind turbine tower using a coupling device and push-on mechanism, allowing segments to be connected to form a spiral helix that dampens vortex-excited transverse oscillations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a Scruton helix is mounted on the tower during assembly, then unwanted oscillations are dampened, but the mounting process becomes more complex
Solution Approach 1:
The Scruton helix is divided into multiple segments that can be independently manufactured and transported. Each segment is equipped with coupling devices that enable simple connection to adjacent segments, forming the complete helix structure around the tower during assembly operations.
Solution Approach 2:
The segments are designed with self-aligning coupling devices and push-on mechanisms that allow the helix to be assembled and disassembled without complex external equipment. The segments can be easily connected by pushing them together, and the entire structure can be quickly deployed and removed during wind turbine assembly.
2Object-affected harmful factors
If traditional Scruton helix designs are used, then oscillation damping is achieved, but production cost and weight increase
Solution Approach 1:
The segments are designed with optimized geometric parameters including specific cross-sectional shapes (triangular, T-shaped, rectangular, or semicircular) and dimensions that maximize oscillation damping effectiveness while minimizing material usage and weight. The helix pitch and segment spacing are carefully selected to achieve the desired protective effect with minimal mass.
3Reliability
If segments are coupled with complex connection mechanisms, then coupling reliability improves, but mounting time increases
Solution Approach 1:
The coupling devices are pre-configured on each segment during manufacturing, with alignment features and connection interfaces prepared in advance. This allows for rapid assembly at the site by simply pushing segments together, eliminating the need for complex field assembly procedures while ensuring reliable coupling.
Solution Approach 2:
The coupling mechanism is simplified by extracting unnecessary complexity and retaining only the essential push-on connection feature. The coupling device includes a coupling element that protrudes from one segment and receives into a corresponding recess of the adjacent segment, creating a reliable but simple connection that can be quickly assembled and disassembled.
4Ease of manufacture
If the Scruton helix is designed for single-use, then manufacturing is simpler, but resource efficiency decreases
Solution Approach 1:
The segments are designed as reusable components that can be removed from the tower after use and stored for future operations. The coupling devices and push-on mechanisms are configured to allow easy disassembly and reassembly, enabling the same segments to be deployed on multiple wind turbines throughout their service life, thereby recovering and reusing manufacturing resources.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The Scruton helix effectively damps transverse oscillations during assembly, is cost-effective to produce, and can be reused across multiple turbines, facilitating quick and reliable installation and removal.
Implementation Method 1
the tower can be set into unwanted oscillation, for example by wind
Implementation Method 2
The Scruton helix serves to damp vortex-excited transverse oscillations during the assembling and construction of the wind turbine
Data Source
AI summary
A segment for a Scruton helix includes: a segment body, a coupling device on the segment body for coupling the segment to a further segment for the Scruton helix, a push-on device on the segment body for coupling the segment to a rope. Also disclosed are a system for a Scruton helix, a Scruton helix, a tower for a wind turbine, and a method for mounting a Scruton helix.