Challenge
Steam and gas turbines, as well as turbojet engines, comprise a multitude of guide wheels and running wheels. The guide wheels are rigidly connected to the turbine casing, while the running wheels are connected to the turbine shaft. Between the inlet and outlet of the casing, the pressure and velocity of the working fluid decrease while torque is transmitted from the blade wheels to the shaft. How can the torque be increased to improve the turbine's overall effectiveness?
Invention
The RES-Cascaded Turbine incorporates one or more ring-shaped airfoils into the radial fan of a running wheel. Within the turbine, the incoming flow creates uplift at the ring-shaped airfoil of the running wheel. This uplift creates a tangential impulse and suction force, which generate torque on the shaft and suction at the turbine casing's inlet opening.
Advantages
- Increasing the efficiency of a turbine by at least 25%
- Optimising the running conditions of a steam turbine at lower gas pressure
- Improved stability for the guide wheel, which is subject to bending, shear and torsion forces
- Improved stability for the running wheel when subjected to bending, shear and torsion forces
Applications
- Steam and gas turbines
- Thermodynamic turbojet engines
- Electrical turbojet engines
- Cooling turbines