Wind Turbine Rotor Blade Joint Segmentation
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Solution Overview
Problem
Existing wind turbine rotor blade assembly methods face challenges such as alignment difficulties, complex inspection processes, and inability to disassemble segments for maintenance or upgrades, particularly in larger turbines, which increase manufacturing, transportation, and assembly costs while compromising structural integrity and energy efficiency.
Innovation Solution
A blade segment design featuring a shell segment with a joint portion projecting from the tip or root end, allowing for span-wise joining with adjacent segments, enabling accurate assembly and disassembly, and facilitating the use of mechanical fasteners or bonding materials for secure connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If rotor blades are manufactured in blade segments to reduce transportation and assembly costs, then manufacturing and transportation costs are reduced, but alignment difficulties and assembly complexity increase
Solution Approach 1:
The rotor blade is divided into multiple blade segments that can be manufactured separately and transported independently. Each segment includes joint portions with joining surfaces that enable modular assembly, reducing transportation costs while maintaining structural integrity through the segmented design.
Solution Approach 2:
The joint portion with joining surfaces acts as an intermediary element between adjacent blade segments. This intermediary structure facilitates precise alignment and secure connection during assembly, reducing assembly complexity while enabling modular manufacturing and transportation.
2Power
If blade segments are joined together to form large rotor blades, then energy production and aerodynamic performance are improved, but inspection and maintenance difficulty increase
Solution Approach 1:
The rotor blade is segmented into modular sections that can be independently inspected and maintained. The joint portions provide accessible interfaces for inspection, allowing technicians to examine connection integrity without disassembling the entire blade structure, thus facilitating maintenance while maintaining large blade power generation capabilities.
Solution Approach 2:
The modular segment design allows individual blade segments to be replaced or upgraded without replacing the entire rotor blade. This enables selective maintenance and recovery of functional segments, reducing inspection difficulty and maintenance costs while preserving the high power output of large rotor blades.
3Power
If rotor blade size is increased to improve energy efficiency, then energy production increases, but manufacturing and transportation costs increase
Solution Approach 1:
Large rotor blades are divided into smaller manageable segments that can be manufactured using standard facilities and equipment. This segmentation enables production of large-scale high-power blades without requiring specialized manufacturing infrastructure, reducing manufacturing costs while maintaining the energy production benefits of large blade size.
Solution Approach 2:
The segmented blade design allows smaller segments to be assembled into a larger complete blade structure. This nested approach enables transportation of smaller, more manageable segments through standard infrastructure while ultimately achieving the large rotor blade configuration needed for high energy production.
4Strength
If blade segments are designed for permanent assembly to ensure structural integrity, then structural strength is improved, but adaptability for maintenance and upgrades is reduced
Solution Approach 1:
The joint portions are designed with dynamic characteristics that provide rigid connection during operation to ensure structural integrity, while allowing for controlled disassembly when needed. The joining surfaces and fastening mechanisms maintain strong structural connection under load but can be systematically disconnected for maintenance or upgrades, providing both strength and adaptability.
Solution Approach 2:
The joint portion design serves multiple functions: providing structural connection for integrity during operation, enabling precise alignment during assembly, and allowing controlled disassembly for maintenance. This multi-functional design achieves both structural strength and adaptability without compromise.
Data Source
AI summary
A blade segment is disclosed for a rotor blade formed from a plurality of blade segments, the blade segment having a span and a chord. The blade segment includes a shell segment having a pressure side and a suction side extending between a leading edge and a trailing edge, the shell segment further having a tip end and a root end. The blade segment further includes at least one joint portion projecting from the shell segment at one of the tip end or the root end and defining a generally span-wise extending joining surface. The joint portion allows the blade segment to be coupled to an adjacent blade segment with a mating joint portion.