A self-inspection method for a hydraulic control turning system of a generator rotor includes: establishing a length dimension relationship table among a plurality of hydraulic cylinders of the hydraulic control turning system; selecting a reference hydraulic cylinder, and acquiring a reference length dimension when the reference hydraulic cylinder is located at a target working position, the target working position is a position at which a turning pin corresponding to the reference hydraulic cylinder is inserted into an adapted hole; and performing a function inspection of a motion execution module in sequence by the plurality of the hydraulic cylinders, based on the reference length dimension and the length dimension relationship table.

A wind turbine is provided including: a pressure supply system for providing a pressurized fluid for operating an aerodynamic device on a blade between a first protruded configuration and a second retracted configuration, the pressure supply system including a pressure line and a suction line and at least one distribution valve for connecting the pressure line and the suction line to the aerodynamic device. The distribution valve includes: a port connected with the aerodynamic device for sending the pressurized fluid to the aerodynamic device and receiving the pressurized fluid from the aerodynamic device, a first cavity connected with the pressure line and a second cavity connected with the suction line, the first cavity and the second cavity being connectable to the port, a distribution element having a passage connected to the first and second cavity and the port.

A hydropower system includes hydraulic ram system with a pressure vessel having a one-way inlet valve and an outlet valve controlling the release of pressurized water from the pressure vessel for use in a water turbine for providing electricity. A hydropower system may have two or more hydraulic ram systems with a first system feeding a first water turbine and a second and third system feeding a second water turbine. One or more siphons are provided to assist water flow, and an overflow pressure vessel captures and pressurizes waste water from the first hydraulic ram system for use in the third system, which releases pressurized water for the second water turbine. The second hydraulic ram system accepts spent water from the first water turbine and releases pressurized water for the second water turbine.

Provided is a method of detecting a leak in a hydraulic cylinder of a rotor blade pitch system of a wind turbine including a plurality of rotor blades, which method includes the steps of selecting one of the pitch systems to undergo a functionality test; actuating a fluid pump to move the pistons of the hydraulic cylinders of the pitch systems to their outermost positions; monitoring the hydraulic cylinder pressure levels of the non-selected pitch systems while performing the functionality test on the selected pitch system; and analyzing the monitored hydraulic cylinder pressure levels of the pitch systems to detect a drop in pressure in a pitch cylinder of a non-selected pitch system. A leak detection arrangement of a pitch-controlled wind turbine; and a pitch-controlled wind turbine are also provided.

Hydro Turbine unit producing 880 MW-h energy daily in offshore oceans creating average high-pressure compressed air transferable energy stored in air tanks and using generators to transform into local electrical energy. The harvesting of renewable offshore water energy of ocean wave, tidal and stream energy, converting it to accumulated water head potential energy in a large isolated water trapping pool structurally supported laterally by six tall towers extended to ocean maximum depth of 100 meter deep with arrow shape plungers pneumatic reciprocating hammering into seabed in slanted angle relative to seabed. The energized ocean water enters the trap pool through thousands of one-way check valves in the trap pool floor and surrounding walls. Large flow openings into 6 Hydro turbine manifolds direct swirling water through radial guiding vanes and conical converging top vertically downward through 8 turbine blades applying torque to turbine outlet shaft and flowing down to ocean level.

Provided is a safety stop valve arrangement of a hydraulic blade pitch system of a wind turbine, including an accumulator arrangement connected over a hydraulic line to a piston of the hydraulic blade pitch system; a redundant set of safety valves arranged between the accumulator arrangement and the piston; a small-orifice restriction nozzle arranged to determine a first rate of hydraulic fluid flow in response to a safety stop input; at least one speed-select valves arranged; and at least one large-orifice restriction nozzle arranged to determine a second rale of hydraulic fluid flow in response to a positive rotor acceleration input, wherein the second rate of fluid flow is faster than the first rate of fluid flow. A safety stop assembly of a wind turbine with hydraulic blade pitch systems and a method of performing a safety stop sequence is also provided.

The present invention relates to a self-powered remote control system for a smart valve, the system comprising: a smart valve for regulating the flow of a fluid in a pipe; a sensing module for sensing the flow rate, pressure, and temperature of the fluid in the pipe; a power generation module for generating power according to the flow of the fluid; a control module for controlling the lifting or lowering of the opening/closing plate of the smart valve according to the flow rate, pressure, or temperature state sensed by the sensing module; and an administrator terminal for transmitting and receiving control signals to and from the control module, wherein the power generation module comprises: a conical fluid guide member provided in a direction in which the fluid is supplied; and a rotating member rotated by the fluid guided through the fluid guide member, whereby the operation of the smart valve can be controlled by manipulating the administrator terminal at a remote location, so as to supply the fluid into the pipe or intercept the supply of the fluid into the pipe.

A braking system for a turbine of a wind powered includes a hydraulic machine connected to a drive shaft of the turbine. A pressure regulating valve in the supply line of the hydraulic machine determines the pressure delivered to the supply line by the hydraulic machine. A control that is responsive to the speed of rotation of the drive shaft modulates the pressure regulating valve so as to increase pressure in the supply line as the rotational speed exceeds a predetermined speed to apply a braking force to the drive shaft.

A flow control manifold apparatus includes a housing defining a first flow path from a flow input port to flow output port and a second flow path from a return inlet port to a return outlet port. A first flow regulating valve is placed inline the first flow path and an excess flow path fluidly couples the first flow path to the second flow path. An excess pressure valve is placed inline the excess flow path and is in a closed orientation when the first flow regulating valve is open so that all of the fluid exits through the flow output port. The excess pressure valve is then in a partially open orientation when the first flow regulating valve is partially closed so that a first portion of the fluid exits through the flow output port and a second portion of the fluid exits through the return outlet port.

Disclosed is a deterioration determination device for a liquid pumping apparatus including: a casing that forms a reservoir space for storing liquid flowed thereto; a feed valve that introduces working gas into the reservoir space; an exhaust valve that releases the working gas from the reservoir space; and a valve operating mechanism having a float arranged in the reservoir space, and performing a pumping stroke in which the liquid is pumped from the reservoir space under a pressure of the working gas by opening the feed valve and closing the exhaust valve when the float moves up to a predetermined high level, and an inflow stroke in which the liquid flows into the reservoir space and the working gas is released from the reservoir space by closing the feed valve and opening the exhaust valve when the float moves down to a predetermined low level. The deterioration determination device includes a first pressure sensor arranged to communicate with a lower portion of the reservoir space to detect a pressure of a liquid layer in the reservoir space, and a deterioration determination unit that determines a degree of deterioration of the valve operating mechanism based on a change in the pressure detected by the first pressure sensor.