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13689results about "Hydro energy generation" patented technology

Anti-sand-accumulation plug valve

The invention relates to the technical field of oil-gas field construction operation equipment, in particular to an anti-sand-accumulation plug valve which comprises a valve body, a valve cover and aplug rod arranged in the valve body. The valve body is connected with the valve cover; the lower end part of the plug rod is connected with a plug; a driver is arranged on the upper end part of the valve body and is connected with the valve body; the driver transmits a torque to the plug rod through a flat key; a sealing rubber core is arranged on the outer part of the plug; a piston is arranged on the upper part of the sealing rubber core; an annular seal cavity is formed among the plug, the plug rod and the piston; a spring is arranged in the seal cavity; the piston, the plug rod, the sealing rubber core and the plug are located in an inner core of the valve body; the inner core of the valve body communicates with an oil passage; and the oil passage is filled with hydraulic oil for driving the piston to move up and down. According to the anti-sand-accumulation plug valve provided by the invention, a gap between the sealing rubber core and the plug can be adjusted, and no gap exists among the plug, the sealing rubber core and the valve body during a pressure-bearing and fluid conveying process, so that sand is prevented from being accumulated.
Owner:YANTAI JEREH PETROLEUM EQUIP & TECH CO LTD

Offshore renewable energy source comprehensive power generating system

The invention relates to an offshore renewable energy source comprehensive power generating system, belonging to the technical field of renewable energy source power generation. The comprehensive power generating system comprises a single pile structure (1), three power generating devices and an electrical connecting circuit. The three power generating devices comprise a wind power generating device, a wave energy power generating device and a tidal energy power generating device which are respectively connected with a direct-current bus (19) in the comprehensive power generating system in parallel by three direct-drive permanent magnet generators (3-1, 3-2, 3-3) and three rectifiers (16-1, 16-2, 16-3), and connected to a reverser (21) on the bank by a seabed cable (20), and finally merged in a power grid by a boosting transformer (22). The offshore renewable energy source comprehensive power generating system can integrate the offshore wind energy power generation, wave energy power generation and tidal energy power generation to an organic combined body, and realizes the compatibility of various power generating devices and the credible connection of various power generating devices with the power grid by the electrical connecting system.
Owner:HOHAI UNIV

Low-head efficient shaft-extension tubular pump turbine and blades thereof

The invention relates to a low-head shaft-extension tubular pump turbine and blades thereof, and belongs to the technical field of energy power. The low-head shaft-extension tubular pump turbine comprises a pump turbine body, a reversible motor, a flow channel and a flow guide mechanism, the flow channel comprises a water inlet section flow channel, a guide blade section flow channel, a runner chamber and an S-shaped exhaust water pipe flow channel which are sequentially communicated, a runner is in transmission connection with the reversible motor through a spindle, the flow guide mechanism is arranged on the other side of the runner, the runner comprises a runner boss and a runner cone, the blades are circumferentially and uniformly arranged on the runner boss, the middle of each blade is thick while two sides of each blade are thin, each blade is in the shape of a three-dimensional warped surface, and spatial characteristics of each blade are indicated by an upper section, a middle section and a lower section. The operation conditions of power generation by a turbine and water pumping by a pump can be simultaneously met and are opposite in water flow direction, namely, the same runner needs to simultaneously meet the double requirements of water pumping and power generation, the efficiency of the two operation conditions can be simultaneously considered, and the low-head shaft-extension tubular pump turbine is applicable to a low-head pumped storage power station.
Owner:重庆航运建设发展(集团)有限公司
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