Double acting turbine for converting wave energy of water to electrical power

An apparatus for converting the wave energy of water to electrical power comprising,

• a tubular body, one end of which is adapted to be inserted into water waves and the second end adapted to extend out of the water whereby the rise and fall of water in the body creates a flow of air in alternate directions through the body,
• a turbine wheel having a plurality of outwardly extending blades positioned in the body above the water level and exposed to and rotated by the flow of air,
• an electrical generator connected to the turbine wheel for generating electricity in response to the rotation of the wheel,
• said blades including a concave surface on one side and a convex surface on the second side, the cross-sectional shape of the blades increasing in size from each edge towards the center of the blades thereby providing an air flow passageway between adjacent blades which decreases in size from each blade edge whereby the turbine wheel will rotate in a single direction regardless of the direction of flow of the air through the body, and whereby the air velocity decreases after the air passes the restriction thereby decreasing the pressure loss of the air as it passes through the turbine wheel and increasing the efficiency of the turbine.

An apparatus for converting sea wave energy into electrical energy, comprising:

• a buoy which executes periodic forced vibrations with a natural frequency approximating the wave frequency along the vertical axis thereof in a manner that the buoy moves with respect to the wave surface;
• an air chamber in said buoy;
• a hydraulic piston in said buoy;
• a turbogenerator for converting the airflow kinetic energy into electrical energy;
• a turbine stage including rigidly fixed blades in said turbogenerator;
• a stator including rigidly fixed blades of said turbine stage;
• a rotor of said turbine stage, disposed downstream of said stator with respect to the direction of said airflow;
• a supplementary stator including rigidly fixed blades of said turbine stage, disposed downstream of said rotor with respect to the direction of said airflow and made symmetrical with said stator with respect to the plane of rotation of said rotor;
• a generator of said turbogenerator;
• a shaft of said generator;
• also mounted whereon is said rotor of said turbine stage;
• an air duct for said air chamber to communicate with said turbogenerator.

An apparatus for converting sea wave energy into electrical energy, comprising

• a turbogenerator for converting airflow kinetic energy into electrical energy including
• a turbine stage including rigidly fixed blades in said turbogenerator;
• a stator including rigidly fixed blades of said turbine stage;
• a rotor of said turbine stage, disposed downstream of said stator with respect to the direction of said airflow;
• a supplementary stator including rigidly fixed blades of said turbine stage, disposed downstream of said rotor with respect to the direction of said airflow and made symmetrical with said stator with respect to the plane of rotation of said rotor;
• a generator of said turbogenerator;
• a shaft of said generator;
• also mounted whereon is said rotor of said turbine stage.

An apparatus for converting sea wave energy into electrical energy, comprising

• a buoy which moves with respect to the wave surface;
• an air chamber in said buoy;
• a hydraulic piston in said buoy;
• a turbogenerator for converting the airflow kinetic energy into electrical energy;
• a turbine stage including rigidly fixed blades in said turbogenerator;
• a stator including rigidly fixed blades of said turbine stage;
• a rotor of said turbine stage, disposed downstream of said stator with respect to the direction of airflow;
• a supplementary stator including rigidly fixed blades of said turbine stage, disposed downstream of said rotor with respect to the direction of said airflow;
• a generator of said turbogenerator;
• also mounted whereon is said rotor of said turbine stage;
• an air duct for said air chamber to communicate with said turbogenerator.

An apparatus for converting sea wave energy into electrical energy, comprising:

• means for converting said sea wave energy into airflow kinetic energy,
• a turbogenerator for converting said airflow kinetic energy into electrical energy;
• a turbine stage including rigidly fixed blades in said turbogenerator;
• a stator including rigidly fixed blades of said turbine stage;
• a rotor of said turbine stage disposed downstream of said stator with respect to the direction of said airflow;
• a supplementary stator including rigidly fixed blades of said turbine stage disposed downstream of said rotor with respect to the direction of said airflow;
• a generator of said turbogenerator;
• also mounted whereon is said rotor of said turbine stage.