Once started the SPGS continuously generates turbine power many times the level needed to keep itself running; the surplus can be used to generate electricity or for other purposes. It operates in two frames of reference simultaneously; one stationary and one rapidly rotating. It also benefits from the equal pressure property of fluid described in Pascal's Law.

At the bottom of its outer containment cylinder, a centrifugal Recirculation Pump forces fluid/water up into an Injection Cylinder which introduces it into a rapidly rotating Pressurization Cylinder above. Internal impellers cause the fluid to rotate along with the PC itself and become pressurized by centrifugal force. Through a narrow slit surrounding the upper perimeter of the PC, the fluid is released driving an axial flow turbine rotating just above; mechanical advantage determined by blade pitch is employed in the process. Gravity returns the spent fluid to the bottom again completing the cycle.

A cooling system is provided which includes, for instance, a coolant circulation loop, one or more primary coolant pumps, and a fill and drain pump. The primary coolant pump(s) is coupled to facilitate circulating coolant through the coolant circulation loop, and the fill and drain pump facilitates selective filling of the cooling system with the coolant, or draining of the coolant from the cooling system. The fill and drain pump is integrated with the cooling system as a backup coolant pump to the primary coolant pump(s), and circulates the coolant through the coolant circulation loop responsive to an error in the primary coolant pump(s). The primary coolant pump(s) and fill and drain pumps may be different types of pumps, and the cooling system further includes a control system for automatically activating the fill and drain pump upon detection of an error in the primary coolant pump(s).

A pump system comprises a fluid housing, a permanent magnet rotor, and an electric stator. The fluid housing has an axis, an axial inlet, and a radially outer outlet. The permanent magnet rotor is disposed on the axis, within the fluid housing, and has a plurality of perimetrically distributed fins that extend at least partly radially outward. The electric stator is disposed on the axis and within the fluid housing, and is situated adjacent the impeller fins of the permanent magnet rotor, separated from the impeller fins by an axial gap.

A pump system comprises a fluid housing, a permanent magnet rotor, and an electric stator. The fluid housing has an axis, an axial inlet, and a radially outer outlet. The permanent magnet rotor is disposed on the axis, within the fluid housing, and has a plurality of perimetrically distributed fins that extend at least partly radially outward. The electric stator is disposed on the axis and within the fluid housing, and is situated adjacent the impeller fins of the permanent magnet rotor, separated from the impeller fins by an axial gap.

Centrifugal electric pump, comprising a pump body, with an aspiration inlet and a delivery outlet, a hydraulic volute, within which an impeller is accommodated, and comprising an electric motor for moving the impeller.

The hydraulic volute is constituted by two half-shells made of plastic material and mutually joined with joining means and with sealing means.

Centrifugal electric pump, comprising a pump body, with an aspiration inlet and a delivery outlet, a hydraulic volute, within which an impeller is accommodated, and comprising an electric motor for moving the impeller.

The hydraulic volute is constituted by two half-shells made of plastic material and mutually joined with joining means and with sealing means.

A fuel pump includes a cartridge removably received within a canister. The cartridge includes a motor assembly, and a pump assembly that includes a centrifugal pumping element and outlet porting from the centrifugal pumping element. The motor drives the centrifugal pumping element to generate a flow of fluid through a main flow pathway between a pump inlet and outlet through the outlet porting of the pump assembly. The cartridge further includes a pressure relief valve that is movable between a closed position and an open position, and defines a pressure relief flow pathway integrally within the cartridge from the outlet porting to inlet porting of the centrifugal pumping element. When pressure within the pump assembly exceeds a threshold pressure, the pressure relief valve moves from the closed position to the open position to permit a relief flow of fluid through the relief flow pathway. The fuel pump may be employed as part of an aircraft fuel system.

An electrical submersible pump (ESP) assembly. The ESP assembly comprises an electric motor having a first drive shaft; a seal section having a second drive shaft that is coupled to the first drive shaft; a third drive shaft that is coupled to the second drive shaft; and an axial flow centrifugal pump stage, wherein the centrifugal pump stage comprises an impeller coupled to the third drive shaft and a diffuser, wherein the impeller defines a plurality of impeller vanes attached between an impeller hub and an impeller shroud, wherein the impeller shroud is a straight-walled cylindrical shape, wherein the diffuser defines a plurality of diffuser vanes attached between a diffuser hub and a diffuser shroud, and wherein the diffuser shroud is a straight-walled cylindrical shape.

A water-pump-integrated water cooling radiator for a computer includes a water tank, an impeller and a driving device. The water tank includes a first water tank and a second water tank. A plurality of tubes are arranged between the first water tank and the second water tank, and a heat dissipation fin is arranged between every two adjacent tubes. The first water tank is provided with at least two liquid chambers arranged at intervals, and two different liquid chambers are respectively connected to a water outlet and a water inlet. The impeller is pivotally mounted in one of the liquid chambers. A partition plate is provided on the first water tank at a position away from the tubes. A disk extending radially is arranged on a side wall of the impeller close to the partition plate.

A water-pump-integrated water cooling radiator for a computer includes a water tank, an impeller and a driving device. The water tank includes a first water tank and a second water tank. A plurality of tubes are arranged between the first water tank and the second water tank, and a heat dissipation fin is arranged between every two adjacent tubes. The first water tank is provided with at least two liquid chambers arranged at intervals, and two different liquid chambers are respectively connected to a water outlet and a water inlet. The impeller is pivotally mounted in one of the liquid chambers. A partition plate is provided on the first water tank at a position away from the tubes. A disk extending radially is arranged on a side wall of the impeller close to the partition plate.