Abstract: A wave power generation system includes a power generation component and a hydraulic component. The hydraulic component includes a cylinder and a piston. The cylinder connects to the power generation component. The cylinder has an accommodation space and a vent located in the middle section of the accommodation space such that the vent runs outside from the accommodation space. The accommodation space is used for accommodating a fluid. The piston is disposed in the accommodation space and is used for being guided by the accommodation space and sliding relative to the cylinder. Thereby, this drives the power generation component to convert mechanical energy into electrical energy, and to force the remaining air in the accommodation space and remaining air in the fluid to be discharged via the vent.

Abstract: A wave power generation system includes a power generation component and a hydraulic component. The hydraulic component includes a cylinder and a piston. The cylinder connects to the power generation component. The cylinder has an accommodation space and a vent located in the middle section of the accommodation space such that the vent runs outside from the accommodation space. The accommodation space is used for accommodating a fluid. The piston is disposed in the accommodation space and is used for being guided by the accommodation space and sliding relative to the cylinder. Thereby, this drives the power generation component to convert mechanical energy into electrical energy, and to force the remaining air in the accommodation space and remaining air in the fluid to be discharged via the vent.

Abstract: The present invention provides a high-pressure water sprayer for fire extinguishment, including a body having a base and a fluid conduit connecting thereto, and at least two spray heads and fluid-guiding bars respectively corresponding thereto. The base is provided with at least two positioning slots for positioning the spray heads. Each of the positioning slots communicates with a main fluid passage within the fluid conduit via a branched fluid passage. A nozzle is formed at a lower end of the spray head, and an orifice is formed at an upper end of the spray head for the fluid-guiding bar to be disposed in a receiving space within the spray head. Then the receiving space communicates with the nozzle. A lower end of the fluid-guiding bar is provided with fluid-guiding grooves opposite to the nozzle. The spray heads are arranged in at least two different disposed angles. An appropriate spray angle can be obtained by adjusting the angle between the nozzle and the base.