An adapter element for a solenoid valve assembly in an irrigation system includes an integral water turbine generator including an impeller positioned in an outlet flow path of a solenoid assembly thereof such that the impeller rotates when water flows to generate electricity.

An energy-recovery system has an energy-recovery turbine to receive a flow of water from a water line to which the turbine is connected and to generate electric power from the flow of water while also regulating water pressure in the water line. The system also includes a pressure-regulating valve (PRV) connected in parallel with the turbine to regulate the water pressure in the water line only when the turbine is inoperative. The system includes a spiral water-flow adapter having a water inlet for connecting to an upstream portion of the water line and a water outlet for connecting to a downstream portion of the water line, the spiral water-flow adapter directing the flow of water from the water inlet into the turbine and then to the water outlet.

A kinetically driven machine for pressurizing water containing kinetically driven pressure pumps containing a front and rear part. The front part contains a pump mounted with thrust bearings, so the pump can rotate around itself. The pump is fitted with a front wing set, that can rotate the front part of the pressure pump. The rear part contains a gearbox that is mounted on the pump. The very gear is mounted on the drive shaft of the pump. A protective tube is fitted around the gearbox and attached with thrust bearings, so that the protective tube can rotate around the gearbox. The rear wing set, constructed like the front wing set, is mounted on the protective tube whereby the rear wing set can rotate the gear. The wing sets rotate in opposite directions, so the energy of the water is transformed into rotational energy that thereby drives the pump.

The present invention relates to a hydraulic installation where sediment concentration in the water flow circulating through the cited installation is monitored continuously. According to the invention, the hydraulic installation comprises a pressure-reducing device and a primary sensor: the pressure reducing device decreases the pressure and discharge of upstream water flow, comprising sediments, allowing that the primary sensor can operate continuously measuring sediment concentration from the upstream water flow. The hydraulic installation also comprises a calibrating device, providing the primary sensor with a reference value to be used for comparison matters and for establishing the content of sediment in the water flow.

A turbine (1) for a conduit comprising a turbine unit (13) including a rotor (3), characterized in that the turbine (1) comprises a speed limiting device for said turbine unit (13), which device comprises at least one flexible element (4) connected to the turbine unit (13), so as to limit the flow rate of the fluid passing through the rotor (3) in order to limit the rotational speed of the rotor (3) of the turbine unit (13).

A stepwise operating parallel-type hydro power generation system having a fixed flow path includes a parallel pipe, a first power generation facility, a second power facility generation facility, first and second flow regulators, and a controller. The parallel pipe includes an inlet pipe, an outlet pipe, and a first straight pipe and a second straight pipe. The first and second straight pipes connected between the inlet pipe and the outlet pipe. Each of the first and second power generation facilities includes a water turbine rotating with the water introduced thereinto and a power generator operating according to the rotation of the water turbine. The controller is configured to open and close either or both of the first and second flow rate regulators at the same time.

A system for extracting energy for landing gear retraction may comprise a wheel pump rotationally coupled to a wheel via a pinion gear. A landing gear control valve assembly may be fluidly coupled to an output of the wheel pump. A secondary pump may be fluidly coupled to the landing gear control valve assembly, and an electric motor may be operationally coupled to the secondary pump.

Systems and methods related to linear turbine systems are presented. Each embodiment described herein may be designed as a single-stage, linear, impulse turbine system. In an embodiment, a linear turbine includes a first shaft extending along a first axis; a second shaft extending along a second axis, the second axis being separated from and substantially parallel to the first axis; a first plurality of buckets to travel a first continuous path around the first shaft and the second shaft along a first plane, the first path including a first substantially linear path segment between the first axis and the second axis; and a nozzle configured to direct a first fluid jet to contact the first plurality of buckets in the first linear path segment.

The invention disclosed herein comprises a system focusing water current into a relatively smaller diameter lumen, imparting vortical movement to the current, and directing the water vortex through an even smaller diameter lumen en route to turbine blades having long curved blades rotatable along an axis parallel with the lumen. Rotation of the turbine blades turns gearing interfacing with the circumference of the turbine assembly, to rotate a drive shaft connected to a generator.

A ring gate for interrupting the water flow through the water path of a hydraulic machine having a rotor and a spiral. The ring gate includes a first hollow body extending around the rotor axis and is designed to be moved from an open position into a closed position and back in axial direction, whereby no water flow through the hydraulic machine can occur if the first body is in the closed position. The ring gate includes a second hollow body extending around the rotor axis and is designed to be moved from a first position outside of the water path into a second position within the water path and back in axial direction, wherein the second body has openings in its wall through which water can flow when the second body is in the second position and the first body is not in the closed position.