Hydropower facilities—encompassing run-of-river stations, storage reservoirs, and wave energy arrays—generate electricity utilizing specialized water turbines, such as impulse and reaction models. The kinetic force of moving water is converted into rotational energy by the turbine runner, spinning the primary turbine shaft which drives an interconnected generator to produce electrical power.
Kaplan turbines are axial-flow reaction turbines widely used in run-of-river hydroelectric power plants and low-head hydropower installations. Their adjustable runner blades enable efficient energy conversion across varying water flow conditions, making them one of the most versatile turbine technologies in renewable energy generation. The reliable operation of Kaplan turbines depends on the precise coordination between the turbine runner, blade pitch control mechanism, hydraulic actuators, and associated drive systems. These components are continuously subjected to fluctuating hydraulic forces, dynamic loads, and demanding operating conditions, requiring highly dependable power transmission solutions.


Francis turbines are the most widely used turbine type in modern hydropower generation and are commonly employed in both storage hydroelectric plants and run-of-river power stations. Renowned for their versatility and high efficiency, these reaction turbines operate across a broad range of waterheads and flow conditions, making them a preferred choice for renewable energy projects worldwide. In a Francis turbine system, water enters the turbine runner through a spiral casing and guide vane arrangement, transferring energy to the runner before exiting axially through the draft tube. The efficient transmission of rotational power from the turbine to the generator is critical for ensuring reliable and continuous electricity generation.
Turgo turbines are impulse-type water turbines widely used in small and medium-head hydropower installations. Known for their high efficiency, compact design, and cost-effective operation, Turgo turbines provide an excellent solution for renewable energy generation where varying flow conditions and moderate water heads are present. Their robust design and simplified construction make them particularly attractive for decentralized hydropower projects and industrial power generation facilities. A critical component of any Turgo turbine installation is the connection between the turbine shaft and the generator shaft. This connection must ensure reliable torque transmission while accommodating shaft misalignments, absorbing operational vibrations, and maintaining long-term performance under continuous operating conditions.

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