An electric coolant pump system is presented including a housing having a main body and an end cap. The main body having a hollow interior and an open end. The end cap is operably connected to the main body and closes the open end of the main body. The system includes a rotor shaft operably connected to the housing. The system includes a rotor operably connected to the rotor shaft and positioned within the hollow interior. The system includes an impeller operably connected to the rotor. The system includes a stator configured to generate a rotating electromagnetic field during operation. The rotor is configured to rotate the impeller in response to the rotating electromagnetic field. The impeller is configured to pump a coolant when rotated. One or more components of the electric coolant pump system thermally expand and contract as the coolant is heated and cooled.

A magnetic pump comprising: a pump body supporting an output shaft on a wet side of the pump and having an inlet and at least one outlet for pumped fluid; an input drive element on a dry side of the pump, at least one magnet for coupling the input and output shafts such that motion of the input shaft causes motion of the output shaft, a pressure containing structure mounted on the pump body for separating the dry and the wet sides, wherein the pump includes: one or more pathways through which pumped fluid can pass so as to lubricate one or more moving parts within the pressure containing structure, and a monitoring port/channel through which one or more properties of pumped fluid passing through the one or more pathways can be sensed.

An electric liquid pump includes a casing having a central portion, rear cover and front cover, having an inlet and an outlet for the liquid. The central portion has first and second compartments, with the second compartment in fluid communication with the front cover interior. The pump includes an impeller and an electric motor, for operating the impeller, a stator housed in the first compartment, a rotor, coaxial with the stator, housed in the second compartment and an electronic card for supplying the stator at least partly housed in the rear cover. The central portion includes a plurality of walls delimiting a plurality of gaps in fluid communication with the second compartment and the front cover interior such that the liquid circulates in the gaps. The walls at least partly face the stator such that the liquid circulating in the corresponding gap removes heat from the stator.

A pump assembly (1) includes a rotor axle (45) extending along a rotor axis (R), an impeller (12) fixed to the rotor axle (45), a pump housing (11) accommodating the impeller (12), and a drive motor with a stator (17) and a rotor (51). The rotor (51) is fixed to the rotor axle (45) for driving the impeller (12). A rotor can (57) accommodates the rotor (51). The rotor can (57) includes a rotor can flange (63). An electronics housing (13) has a cap (21) including a first material (139) forming a front face (19) of the cap (21). The front face (19) extends essentially perpendicular to the rotor axis (R). The first material (139) is at least partially overmolded with a second material (141) at an inner side of the cap (21). The second material (141) is more heat-conductive than the first material (139).

A pump arrangement for a drum or container pump, the pump arrangement including a pump housing; a drive shaft support tube received in the pump housing; and a drive shaft rotatably supported in the drive shaft support tube at a rotor side bearing and at a pump arrangement coupling, wherein the drive shaft runs freely between the rotor side bearing and the pump arrangement coupling, wherein the drive shaft runs through the at least one support ring that is fixed relative to the pump housing and that has an inner diameter that is greater than an outer diameter of the drive shaft and that is arranged between the rotor side bearing and the pump arrangement coupling.

Systems and methods for producing fluids from a subterranean well include an electrical submersible pump assembly with a motor-pump unit. The motor-pump unit has a motor housing and a stator is located within the motor housing. The stator has a stator body with an interior cavity. A rotor assembly is located within the interior cavity of the stator. The rotor assembly includes a rotor shaft extending along the central axis of the stator, a rotor member, and an intermediate rotor bearing assembly. The rotor member and the intermediate rotor bearing assembly circumscribe the rotor shaft. An impeller is mounted on the rotor shaft and located within the interior cavity of the stator. A liner with a polygonal cross section is located along an interior surface of the interior cavity. The liner is secured to the motor housing and seals the stator body from a wellbore fluid.

A liquid cooling heat exchange apparatus comprising a water block set and pump unit is provided. The water block set has a water block cover having an inlet port, cover diversion channel, cover diversion opening, cover outlet through hole and outlet port, surge directing plate having a plate cover end, and water block. The pump unit has a rotor housing having an impeller cavity comprising an inlet and outlet. The inlet and outlet ports and the cover diversion opening is at a same side, the cover outlet through hole is at an opposite side. During operation, working fluid is sucked via the inlet port, pass the cover diversion channel covered by the plate cover end, through the cover diversion opening and impeller cavity inlet, through the impeller cavity, and outlet, and cover outlet through hole, and through the water block, before exiting through the outlet port.

Disclosed is a water pump with an adjustable water discharge direction, which comprises a pump shell, a rotating shaft, a rotor, a stator and an impeller; a mounting cavity and a pump cavity which are isolated from each other are arranged in the pump shell, and the pump shell is provided with a water inlet and a water outlet; the rotating shaft is rotatably arranged in the pump shell, a front end of the rotating shaft is located in the pump cavity, and a rear end of the rotating shaft is located in the mounting cavity; the rotor is arranged at the rear end of the rotating shaft and located in the mounting cavity; the stator is arranged in the mounting cavity and encloses an outer periphery of the rotor; the impeller is arranged at the front end of the rotating shaft and located in the pump cavity.

Systems and methods for producing hydrocarbons from a subterranean well include an electrical submersible pump assembly with a motor. The motor has a motor housing and a stator is located within the motor housing. The stator has a stator body with an interior cavity. A rotor assembly is located within the interior cavity of the stator. The rotor assembly includes a rotor shaft, a rotor member, and an intermediate rotor bearing assembly. The rotor member and the intermediate rotor bearing assembly circumscribe the rotor shaft. The rotor shaft extends along the central axis of the stator. A liner is located along an interior surface of the interior cavity, the liner being a thin walled member that is secured to the motor housing and seals the stator body from a wellbore fluid. The liner has a polygonal cross section.

An electric coolant pump includes a pump housing, an electric motor, and a pump wheel. The pump housing includes a pumping chamber and a motor chamber. The pumping chamber includes an inlet, an outlet, and a pump volute which extends from the inlet to the outlet. The pump volute has a volute cooling sector having a radial width to axial height ratio of >1.5. A separation sidewall having a cooling section fluidically separates the motor chamber from the pumping chamber. The electric motor has a motor stator which is arranged in the motor chamber, a rotating motor rotor, and a motor electronics which is arranged in the motor chamber axially adjacent to the volute cooling sector and in a thermal contact with the cooling section. The motor electronics energizes the static motor stator. The pump wheel is arranged in the pumping chamber and is connected with the motor rotor.