Rolling Fluid Turbine Integrated Generator Design
Solution Overview
Problem
Existing fluid turbines with rolling principles require geared transmissions to efficiently convert mechanical energy into power, leading to low efficiency when not equipped with them.
Innovation Solution
A rolling fluid turbine design where a power generator is integrated inside the rotor, with a clamping mechanism allowing longitudinal deflection but not rotational movement, forming a freely rotating couple with the shaft, eliminating the need for external transmissions and ensuring efficient power generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a geared transmission is added to transmit mechanical output to power generator, then power generation efficiency is improved, but device complexity increases
Solution Approach 1:
The patent merges the rotor and power generator into a single integrated unit. The rotor itself serves as the generator rotor, eliminating the need for separate transmission mechanisms. This combining of functions directly resolves the contradiction by maintaining efficiency while reducing complexity.
Solution Approach 2:
The rotor is designed to serve multiple functions simultaneously: it acts as both the hydraulic turbine rotor and the generator rotor. This multi-functionality eliminates the need for additional transmission components, resolving the contradiction between efficiency and complexity.
2Device complexity
If power generator is installed inside rotor forming freely rotating couple, then transmission mechanism is eliminated, but manufacturing precision requirements increase
Solution Approach 1:
The clamping mechanism is designed to allow controlled dynamic deflection of the shaft while preventing rotation. This dynamic capability enables the system to accommodate manufacturing tolerances and operational variations, reducing the stringency of manufacturing precision requirements while maintaining the simplified structure.
3Device complexity
If rotor and stator constitute carrying generator without transmission, then device complexity is reduced, but power generation efficiency decreases
Solution Approach 1:
The patent combines the rotor and generator rotor into a single component, ensuring that the mechanical energy from water flow is directly converted to electrical energy without lossy transmission. This merging maintains efficiency while simplifying the device structure.
Solution Approach 2:
The rotor serves dual functions as both hydraulic turbine rotor and generator rotor, enabling direct energy conversion. This multi-functionality resolves the contradiction by maintaining power generation efficiency while eliminating the need for separate transmission mechanisms.
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 solution enables efficient power generation without geared transmissions, allowing the turbine to produce 2-5kWh daily using small water flows, making it suitable for household applications and offering economic benefits by utilizing marginal hydraulic energy sources.
Implementation Method 1
If a synchronous generator with coils arranged on the stator is used, the permanent magnets are placed on the rotor
Data Source
Figure 1
Figure 2
AI summary
The invention concerns a fluid turbine comprising stator (1), fitted with fluid inlet (6) and outlet (8), and rolling rotor (2) installed inside the confusor part of stator (1) at one end of shaft (5), with the other end fixed in clamp (9) of clamping mechanism (10) on stator (1). Shaft (5) of rolling rotor (2) is fixed in clamp (9) of clamping mechanism (10) non-rotationally with the possibility of angular deflection in all directions. A generator connected to shaft (5).