A pump (8) is disclosed. The pump (8) includes a partition wall (84) configured to divide the interior of a body into two spaces, a first chamber (C1) located under the partition wall (84), the first chamber (C1) having an introduction portion (841), through which water is introduced, a second chamber (C2) located above the partition wall (84), the second chamber (C2) having a discharge portion (849), through which water is discharged, a communication hole (86) formed through the partition wall (84) to allow the first chamber (C1) and the second chamber (C2) to communicate with each other therethrough, an impeller (85) provided in the second chamber (C2) to move water to the discharge portion (849), a housing configured to define the bottom surface of the first chamber (C1), the housing being made of a conductor, a heater (H) configured to heat the housing (81), and a steam discharge (843) port formed through the first chamber (C1) to allow steam to be discharged therethrough.

A flow management and separation system for a wellbore having a horizontal section, vertical section and intermediate build section, a production tubing, and an annulus surrounding the production tubing, is combined with a primary vertical lift device disposed in the intermediate build section or a heel segment of the horizontal section. The fluid flow management system may be located adjacent to and downhole from the primary vertical lift device. The system includes an intake to an intake passage, to receive produced fluids from the reservoir; a wavebreaker for calming produced fluid flow; a fluidseeker having a rotatable inlet extension having a weighted keel and an internal bypass passage in fluid communication with the intake flow passage; and a separator for separating gas and liquid phases uphole from the fluidseeker.

The present invention relates to a reinforcing structure for a casing accommodating an impeller. A double-suction centrifugal pump includes: a rotational shaft (1); an impeller (2) secured to the rotational shaft (1); a casing (3) that accommodates the impeller (2) therein; and legs (5) secured to the casing (3). The casing (3) includes a suction volute (20) that communicates with a suction port (6), the casing (3) includes an upper casing (3a) and a lower casing (3b) fastened to each other, at least one rib (28A, 28B, 28C) is provided on each of both side surfaces of the lower casing (3b) constituting the suction volute (20), the rib (28A, 28B, 28C) extends in a radial direction of the rotational shaft (1) when viewed from an axial direction of the rotational shaft (1), and the rib (28A, 28B, 28C) is separated from the legs (5).

A pump assembly and components therefor including an impeller which has flow inducer elements on an inner surface of a front shroud thereof, a flow directing device or strainer having passageways for delivering material to the impeller and at least one flow circulating passageway and a pump casing having an intake section with flow distribution vanes in the region of a feed opening adjacent the intake section.

A stage piece for a multistage pump includes a first ring, a second ring, and a post. The connects the first ring to the second ring and has a first radial end and a second radial end and a first side and a second side connecting the first and second ends. The first and second sides are arcuate and extend toward each other such that the first radial end is longer that the second radial end.

The disclosure relates to an electric liquid pump, comprising a pump housing, a motor connected to the pump housing, and an impeller housed in the pump housing and driven by the motor. The pump housing is provided with an inlet port and an outlet port. The impeller has an impeller inlet at the center thereof and an impeller outlet at a peripheral side thereof. The inlet port, the impeller inlet, the impeller outlet, and the outlet port are in flow connection sequentially. The inlet port comprises a columnar first segment and a second segment extending from the first segment. The second segment is close to the impeller inlet with a mouting seat formed therein. The impeller is sleeved on a rotation shaft. One end of the rotation shaft is engaged in the mounting seat. The impeller is rotatable relative to the mounting seat. The mounting seat is partially received in the impeller inlet. A gap between the mounting seat and an inner wall of the impeller inlet is defined as a flow passage for liquid.

An impeller seat for a pump, the impeller seat comprising an inlet wall, an inlet radius, and a guide pin connected to and extending radially inwards from the inlet wall. The guide pin includes a tip radius. A 40%-circle is offset radially inwards from a circular intersection forty percent of the difference between the inlet radius and the tip radius. The guide pin comprises a leading edge configured for scraping off pollutants from an impeller of the pump, and, at least between the inlet wall and the 40%-circle, comprises a pre-leading edge located upstream the leading edge of the guide pin, seen in the direction of rotation of the pump and seen in an axial direction.

An electric coolant pump is used as an auxiliary water pump in a vehicle. The pump includes radial mounting of the shaft (4) is provided by means of a coolant-lubricated radial sliding bearing (41) arranged between the pump impeller (2) and the rotor (32). A dry-running electric motor (3) with a radially inner stator (31) and a radially outer rotor (32) is accommodated in a motor chamber (13) separated from the pump chamber (10). A shaft seal (5) is between the radial sliding bearing (41) and the motor chamber (13). The rotor (32) is bell-shaped with an inner surface facing the shaft seal (5) and being fixed to the shaft seal (5) to axially overlap with the shaft (4). The motor chamber (13) has an opening to the atmosphere, which is closed by a liquid-tight pressure equalization membrane (6) that is permeable to vapor.

A suction chamber for use in a surface pumping system includes a central housing that is substantially cylindrical and has a motor end and a pump end opposite the motor end. The suction chamber includes a motor-end plate bolted to motor end of the central housing and a pump-end plate bolted to the pump end of the central housing. The suction chamber also includes an inlet branch connected to the central housing. A method for assembling a non-welded suction chamber is also disclosed.

A pump includes a housing which forms a suction chamber and a discharge chamber therein; a suction nozzle which is disposed in one side of the housing, and communicates with the suction chamber; a discharge nozzle which is disposed in the other side of the housing, and communicates with the discharge chamber; a partition wall which partitions the suction chamber and the discharge chamber, and has a communication hole, which communicates the suction chamber and the discharge chamber, that is formed at a central portion; and a plurality of baffles which are disposed inside the suction chamber, and guide fluid introduced through the suction nozzle to the communication hole, wherein the plurality of baffles have different lengths and are separated apart from each other in a circumferential direction in an upper side of the partition wall.