Wind Turbine Lightning Protection Device with Spring-Loaded Adjustment
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Solution Overview
Problem
Existing lightning protection devices for wind turbines face challenges in maintaining a consistent clearance distance between the discharging point and the tower top flange during yawing movements, which is crucial for effective lightning protection and preventing damage to wind turbine equipment.
Innovation Solution
A lightning protection device comprising a machine body fixing frame, a discharging support frame, and a guiding elastic piece, where a current collection claw, guide wheel, and carbon brush are connected to the discharging support frame, and the guiding elastic piece adjusts the relative distance between the machine body fixing frame and the discharging support frame to ensure a consistent clearance distance, even during relative movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the clearance distance between the discharging point and the tower top flange is increased, then the lightning protection effect is improved, but the risk of contact between the discharging point and the lightning protection object increases
Solution Approach 1:
The patent employs a spring-loaded adjustment mechanism that allows the discharging support frame to dynamically adjust its position relative to the tower top flange. The spring component enables automatic compensation for relative movements during yawing operations, maintaining an optimal clearance distance that prevents contact while ensuring effective lightning protection.
Solution Approach 2:
The patent changes the clearance distance parameter dynamically through the spring adjustment mechanism. By allowing the clearance distance to vary within a controlled range rather than being fixed, the system adapts to different operational conditions during yawing movements, optimizing both protection effectiveness and contact prevention.
2Object-affected harmful factors
If the clearance distance is decreased to prevent contact, then the safety is improved, but the lightning protection effect deteriorates
Solution Approach 1:
The spring-loaded mechanism provides dynamic adjustment of the discharging support frame position, enabling the system to maintain an optimal clearance distance that is sufficient to prevent contact during yawing movements while remaining small enough to ensure effective lightning protection through point discharge.
3Adaptability or versatility
If the wind turbine executes yawing movement, then the operational flexibility is improved, but the consistency of clearance distance between the discharging point and tower top flange deteriorates
Solution Approach 1:
The patent incorporates a spring adjustment mechanism that dynamically compensates for relative movements between the cabin rotating part and the tower top flange during yawing operations. This dynamic adjustment maintains consistent clearance distance despite the changing operational conditions, allowing full yawing flexibility while preserving clearance consistency.
Solution Approach 2:
The spring-loaded mechanism automatically adjusts the discharging support frame position in response to relative movements during yawing, without requiring external intervention. The system self-regulates the clearance distance through the elastic properties of the spring, maintaining consistency throughout yawing operations.
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
This solution ensures effective lightning protection by maintaining a proper clearance distance for point discharge, preventing damage to the discharging point and ensuring safe operation of wind power generation equipment, even during yawing movements.
Implementation Method 1
Two ends of the guiding elastic piece are connected with the machine body fixing frame and the discharging support frame respectively, and the relative distance between the machine body fixing frame and the discharging support frame is adjusted
Implementation Method 2
the guide wheel and the carbon brush extend out from the discharging support frame to prop against the side wall of a top conductor at top portion of the lightning protection body
Data Source
Figure 1~2
AI summary
The present invention discloses a lightning protection device and a wind turbine. The lightning protection device comprises a machine body fixing frame, a discharging support frame and a guiding elastic piece, wherein the machine body fixing frame is connected and fixed with a machine body; a current collection claw, a guide wheel and a carbon brush are fixedly connected to the discharging support frame, face the side wall of a top conductor at top portion of the lightning protection body and extend out of the discharging support frame; and two ends of the guiding elastic piece are connected with the machine body fixing frame and the discharging support frame respectively, and the relative distance between the machine body fixing frame and the discharging support frame is adjusted. The wind turbine comprises a wind wheel, a generator, an iron tower and a yawing device, and also comprises the lightning protection device and the wind turbine provided by the present invention. Through the lightning protection device and the wind turbine, effective lightning protection effect can be achieved, and safe operation of wind power generation equipment is ensured.