Multirotor Wind Turbine Erection Using Integrated Hoisting
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Solution Overview
Problem
The high costs and logistical challenges of using external crane equipment for erecting and dismantling multirotor wind turbines, particularly due to their increasing size and weight, necessitate a method that eliminates the need for such equipment to reduce expenses and simplify the installation process.
Innovation Solution
A method involving a carrier structure that is arranged circumferentially around the tower, hoisted using a hoisting arrangement integrated with the wind turbine, and secured to the tower, allowing for the mounting of energy generating units without external cranes, utilizing spring-loaded rollers and wires for controlled hoisting and securing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If external crane equipment is used for erecting and dismantling wind turbines, then the tower and energy generating units can be lifted to the top of the tower, but the costs increase significantly and logistical challenges arise
Solution Approach 1:
The patent extracts the hoisting function from external crane equipment and integrates it into the wind turbine structure itself. Winches are mounted directly on the tower or on the energy generating units, allowing these units to serve their own lifting requirements. This eliminates the need for separate external crane equipment while maintaining the capability to erect and dismantle the wind turbine.
Solution Approach 2:
The wind turbine structure performs its own erection and dismantling operations through integrated winches and hoisting arrangements. The tower and energy generating units use their own structural components to lift and position themselves, rather than relying on external equipment. This self-service approach reduces costs and logistical complexity.
2Power
If the size of wind turbines increases to produce more power, then the energy output increases, but the size and cost of crane equipment required for erection also increases
Solution Approach 1:
The patent removes the dependency on external crane equipment by extracting the hoisting function and integrating it into the wind turbine structure. Winches are mounted on the tower or on the energy generating units themselves, allowing multirotor wind turbines with multiple large energy generating units to be erected without requiring proportionally larger external cranes.
Solution Approach 2:
The integrated winches and hoisting arrangements serve multiple functions: they can lift energy generating units during erection, position them on the tower, and facilitate dismantling operations. This multi-functional system replaces the need for specialized large crane equipment that would be required for each individual component.
3Productivity
If external crane equipment is rented and transferred to operating sites, then erection operations can be performed, but rental costs and transportation logistics become very expensive and difficult
Solution Approach 1:
The wind turbine structure performs its own erection and dismantling operations through integrated winches and hoisting arrangements. The tower and energy generating units use their own structural components to lift and position themselves, rather than relying on external equipment that requires rental and transportation.
Solution Approach 2:
The patent extracts the hoisting function from external crane equipment and integrates it into the wind turbine structure itself. Winches are mounted directly on the tower or on the energy generating units, allowing these units to serve their own lifting requirements and eliminating the need for separate external crane equipment.
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 method significantly reduces costs by eliminating the need for external crane equipment, enabling efficient and controlled erection and dismantling of multirotor wind turbines, ensuring safe and stable operation while minimizing damage and safety risks.
Implementation Method 1
hoisting the carrier structure to an upper part of the tower structure, using a hoisting arrangement
Implementation Method 2
utilizing spring-loaded rollers and wires for controlled hoisting
Implementation Method 3
utilizing spring-loaded rollers and wires for controlled hoisting
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A method for erecting a multirotor wind turbine (10) is disclosed. A carrier structure (1, 1a, 1b) is arranged circumferentially with respect to a tower structure (2) and hoisted to an upper part of the tower structure (2), using a hoisting arrangement, such as a wire winch arrangement (3, 4, 8). Furthermore, energy generating units (5) may be hoisted to the carrier structure (1, 1a, 1b) using the hoisting arrangement (3, 4, 8). A similar method for dismantling a multirotor wind turbine (10) is also disclosed. The multirotor wind turbine (10) can be erected or dismantled without the need for an external crane.