The invention discloses a kind of single shaft driven level 3 of axial flow pump, including: power source, pumping out, transmission shaft, export fixed vane, the third stage impeller, the second impeller, the first stage impeller, imported fixed vane, pump inlet, the first transmission cone gear, the first cone gear transmission device, the second driving cone gear and the second cone gear transmission device, the invention can realize the opposite steering of the two adjacent impellers by fixing the guide vane and the bevel gear transmission in the impeller hub. With compact structure and small axial size, this single-shaft driven three-stage counter-rotating axial-flow pump can greatly improve the head of the axial pump and widen the efficient zone.

The invention discloses a kind of single shaft driven level 3 of axial flow pump, including: power source, pumping out, transmission shaft, export fixed vane, the third stage impeller, the second impeller, the first stage impeller, imported fixed vane, pump inlet, the first transmission cone gear, the first cone gear transmission device, the second driving cone gear and the second cone gear transmission device, the invention can realize the opposite steering of the two adjacent impellers by fixing the guide vane and the bevel gear transmission in the impeller hub. With compact structure and small axial size, this single-shaft driven three-stage counter-rotating axial-flow pump can greatly improve the head of the axial pump and widen the efficient zone.

This disclosure includes subsea pumping apparatuses and related methods. Some apparatuses include one or more subsea pumps, each having an inlet and an outlet, and one or more motors, each configured to actuate at least one pump to communicate a hydraulic fluid from the inlet to the outlet, where the subsea pumping apparatus is configured to be in fluid communication with a hydraulically actuated device of a blowout preventer. Some subsea pumping apparatuses include one or more of: a desalination system configured to produce at least a portion of the hydraulic fluid; one or more valves, each configured to selectively route hydraulic fluid from an outlet of a pump to, for example, a subsea environment, a reservoir, and/or the inlet of the pump; and a reservoir configured to store at least a portion of the hydraulic fluid. Some apparatuses are configured to be directly coupled to the hydraulically actuated device.

This disclosure includes subsea pumping apparatuses and related methods. Some apparatuses include one or more subsea pumps, each having an inlet and an outlet, and one or more motors, each configured to actuate at least one pump to communicate a hydraulic fluid from the inlet to the outlet, where the subsea pumping apparatus is configured to be in fluid communication with a hydraulically actuated device of a blowout preventer. Some subsea pumping apparatuses include one or more of: a desalination system configured to produce at least a portion of the hydraulic fluid; one or more valves, each configured to selectively route hydraulic fluid from an outlet of a pump to, for example, a subsea environment, a reservoir, and/or the inlet of the pump; and a reservoir configured to store at least a portion of the hydraulic fluid. Some apparatuses are configured to be directly coupled to the hydraulically actuated device.

An air purification apparatus for nasal application is provided for purifying and/or reducing undesirable materials from air intended to enter a nasal cavity. The air purification apparatus for nasal application may include an air purification apparatus, housing component, power component, fan component, filtration component, germicidal irradiation component, aroma component, olfactory substance delivery component, nose plug component, monitoring component, and case. The case may reversibly enclose the apparatus and provide electrical power delivery.

A rotor for a pump has a housing and a rotor, and has at least one blade. The rotor is able to be actuated to rotate about an axis of rotation in order to convey a fluid in the axial or radial direction, and the rotor is able to be deformed in the radial direction between a first, radially compressed state and a second, radially expanded state. At a maximum speed of rotation of the rotor at which the power of the pump is at a maximum, the blade is essentially radially oriented, and/or the rotor has its maximum diameter.

Some particular preferred embodiments relate to the field of pumping stations for sewage and wastewater with submersible pumps mounted in the bottom of the wells. To allow easy cleaning and maintenance of the pumps without getting in contact with the dirty water the solution is a system for easy lifting of the pump out of the well and lowering the pump again with an auto coupling.

One aspect described in this application provides an apparatus that includes an external tray hose with an integrated booster pump for cooling a computing device. The booster pump can boost fluid flow and fluid pressure of coolant fluid pumped toward the computing device on a server tray. The booster pump includes a stator mounted around a booster pump housing with a bore. The stator includes one or more C-shaped lamination stacks for supporting coil windings. Energized coil windings generate a varying magnetic field for rotating an impeller within a housing bore to pump fluid along the housing bore of the booster pump. The apparatus includes a monitor module to monitor a set of sensors to obtain information about one or more of fluid temperature, fluid pressure, and device temperature; and a control module to adjust performance of the booster pump based on the information obtained from the set of sensors.

One aspect described in this application provides an apparatus that includes an external tray hose with an integrated booster pump for cooling a computing device. The booster pump can boost fluid flow and fluid pressure of coolant fluid pumped toward the computing device on a server tray. The booster pump includes a stator mounted around a booster pump housing with a bore. The stator includes one or more C-shaped lamination stacks for supporting coil windings. Energized coil windings generate a varying magnetic field for rotating an impeller within a housing bore to pump fluid along the housing bore of the booster pump. The apparatus includes a monitor module to monitor a set of sensors to obtain information about one or more of fluid temperature, fluid pressure, and device temperature; and a control module to adjust performance of the booster pump based on the information obtained from the set of sensors.