Tower Barrel Cable Torsion Restraint for Wind Turbine Yawing
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Solution Overview
Problem
In wind turbine generator systems, the yawing motion causes cables to twist and potentially break due to inadequate fixation, leading to safety hazards, especially in larger systems where numerous power and control cables are involved.
Innovation Solution
A torsion cable direction-changing device is integrated into the tower barrel, featuring a beam and supports that restrain cable torsion, allowing cables to twist only before being wound, thereby preventing deformation and breakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If single row cable clamps or double row cable clamps are used to secure cables in the tower barrel, then the cables can be fixed in place, but the cables will twist and wind due to yawing motion, causing deformation and potential breakage
Solution Approach 1:
The cable clamps are divided into multiple independent clamp units (first clamp, second clamp, third clamp, fourth clamp) arranged in parallel. Each clamp independently secures the cable at different positions, allowing the cable to be fixed without twisting. This segmentation of the clamping function resolves the contradiction by providing stable fixation while preventing cable deformation through distributed support points.
Solution Approach 2:
The cable clamps extend in the circumferential direction of the tower barrel, adding a circumferential dimension to the clamping structure. This multi-dimensional arrangement (radial + circumferential) allows the cables to be secured against both radial displacement and circumferential twisting, thereby maintaining cable integrity while providing stable fixation during yawing motion.
2Productivity
If the wind turbine yawing angle increases to align with wind direction, then power generation efficiency improves, but the cables stretched along the tower barrel deform largely and may break
Solution Approach 1:
The multiple cable clamps are pre-installed on the tower barrel at specific positions before the wind turbine begins operation. These clamps create predetermined support points that guide the cable's path and prevent excessive stretching or deformation during yawing. This preliminary arrangement of clamps ensures that even when the wind turbine yaws to optimal positions for power generation, the cables remain protected from breakage.
Data Source
AI summary
A tower barrel for wind electric power generation includes a barrel wall for supporting a wind turbine generator system, a torsion cable direction-changing device which is placed in the tower barrel and fixed on the barrel wall for holding the cable from the wind turbine generator system and restraining the torsion of the cable, and cable clamps which are placed under the torsion cable direction-changing device and connected to the barrel wall for securing the cable. The torsion cable direction-changing device includes a beam and two supports for the beam, the supports are fixed on the barrel wall. The torsion cable direction-changing device in the tower barrel improves the safety of the cable, and so improves the safety of the wind turbine generator system.