A pump comprises: at least one rotor rotatable about an axis of rotation; a pump housing surrounding the rotor, wherein a pump channel is formed between a radially inner surface of the pump housing and a radially outer surface of the rotor; and a seal assembly that seals the pump channel to an end surface of the rotor. The seal assembly comprises: a sliding surface which is provided on one of the rotor and the pump housing and which extends perpendicular to the axial direction of the rotor; a static surface provided on the other of the rotor and the pump housing; and a first elastomer element attached to the static surface and pressed against the sliding surface in the axial direction.

An method for assembling a pump section of a fluid pump is provided. The method includes the steps of providing a pump inlet plate and a pump outlet plate, wherein the inlet plate includes an inlet plate slot and the outlet plate includes a complementary outlet plate slot; feeding a metal wire from a supply of metal wire to a straightener; pulling the metal wire through the straightener to reduce a bend in the metal wire; guiding the metal wire to one of the inlet plate and outlet plate; causing the metal wire to be inserted into the slot of the said one of the inlet plate and outlet plate; and cutting the metal wire at a desired length such that a portion of the cut wire remains extending from said slot. A pump section formed by the method and a fluid pump including the pump section are also disclosed.

A pump system for pumping production fluids from a wellbore or pumping well treatment fluids into a wellbore comprising: an axial flux electric motor; a seal section coupled to the axial flux motor; a pump intake coupled to the seal section; a pump coupled to the pump intake, and a fluid discharge coupled to the pump. The torque capacity axial flux motor may be modified without removing the axial flux motor from the pump.

A pump system for pumping production fluids from a wellbore or pumping well treatment fluids into a wellbore comprising: an axial flux electric motor; a seal section coupled to the axial flux motor; a pump intake coupled to the seal section; a pump coupled to the pump intake, and a fluid discharge coupled to the pump. The torque capacity axial flux motor may be modified without removing the axial flux motor from the pump.

An method for assembling a pump section of a fluid pump is provided. The method includes the steps of providing a pump inlet plate and a pump outlet plate, wherein the inlet plate includes an inlet plate slot and the outlet plate includes a complementary outlet plate slot; feeding a metal wire from a supply of metal wire to a straightener; pulling the metal wire through the straightener to reduce a bend in the metal wire; guiding the metal wire to one of the inlet plate and outlet plate; causing the metal wire to be inserted into the slot of the said one of the inlet plate and outlet plate; and cutting the metal wire at a desired length such that a portion of the cut wire remains extending from said slot. A pump section formed by the method and a fluid pump including the pump section are also disclosed.

Various downhole tools are discussed, including intake and gas separators for a downhole rotary pump. Multiple intakes configured in parallel and series are discussed, along with compact axial length gas separators, and gas separators that remove gas in novel ways. Related apparatuses and methods are discussed.

An example axial pump for delivering liquid coolant to cool an electronic device comprises a conduit defining a flow path from an inlet of the conduit to an outlet of the conduit and an impeller in the conduit. The impeller is rotatable about an axis of rotation parallel to the flow path. The pump also has a motor stator configured to drive rotation of the impeller body about the axis of rotation. In addition, the pump comprises an adjustment mechanism coupling the impeller to the conduit. The adjustment mechanism is actuatable to cause translation of the impeller relative to the conduit. This may allow for adjustment of a clearance between a blade tip of a blade of the impeller and a wall of the conduit.

A turbo machine comprising a barrel casing having a cylindrical internal surface defining an internal containment volume, a bundle having a cylindrical shape, adapted to be accommodated into the internal containment volume, a cylindrical cover connected to the bundle to close the internal containment volume and hold the bundle inside the barrel casing, a split shear ring adapted to fix the barrel casing with the cylindrical cover wherein the external cylindrical surface of the cylindrical cover and the cylindrical internal surface of the barrel casing are provided with a first circumferential groove and a second circumferential groove adapted to accommodate the shear ring and wherein the first grooves is adapted to completely accommodate the cross section of the split shear ring.

A chain tensioning arrangement for a column pipe which is configured to house a submersible pump. The chain tensioning arrangement includes a radially extending cross beam, a spring arrangement connected to the cross beam, at least one spring member, and an arm that is movably connected to the cross beam. The arm includes an engagement member configured to optionally engage a chain connected to the pump. The arm is displaceable in the axial direction between a lower position and an upper position. The spring member is arranged to displace the arm in the direction from the lower position towards the upper position. Also described is a pump station including a column pipe, a submersible pump arranged in the column pipe and an axially extending chain connected to the pump and configured to move the pump in the column pipe.

An impeller in embodiments, as an example, includes a base plate, and a shroud including a plurality of blade members fixed to the base plate, wherein a plurality of the blade members are provided so as to stand and are arranged with intervals in a circumferential direction on a face portion of the shroud, the face portion facing the base plate, a plurality of groove portions for mounting each of a plurality of the blade members are formed on the base plate, and a plurality of the groove portions are configured to mount each of the blade members included in a plurality of kinds of the shrouds in which at least one of an arrangement of the blade members and a number of the blade members is different from each other.