Underwater turbine
By using a translationally movable push rod and locking device in the underwater turbine, combined with a hydraulic or pneumatic linear actuator, the limitations of blade adjustment space and shutdown reliability in small underwater turbines are solved, enabling flexible adjustment and automatic shutdown in case of failure.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- AB SKF SKF PATENT DEPARTMENT
- Filing Date
- 2024-12-12
- Publication Date
- 2026-07-17
AI Technical Summary
In relatively small underwater turbines, existing drive units occupy a large amount of installation space, making blade adjustment difficult and unable to be effectively shut down in the event of power supply failure or malfunction.
The rotor blades are rotated by a push rod with translational motion and a locking device. The push rod's translational motion is used to adjust the rotation of the rotor blades and fix the blade position in case of failure. The hydraulic or pneumatic linear actuator and locking device ensure that the blades are in a specific position. The rotor spindle design is optimized by combining a rotational decoupling bearing unit.
The rotor blades were flexibly adjusted within a limited space, ensuring that the underwater turbine would automatically shut down in case of failure or energy failure, thus improving the system's reliability and energy efficiency.
Smart Images

Figure CN122422650A_ABST