A fan frame body structure includes a first frame body. The first frame body has a first upper end, a first lower end, a first frame wall and a first main flow way. The first main flow way passes through the first frame body and is formed with a first main inlet and a first main outlet respectively at the first upper end and the first lower end. A first subsidiary flow way is disposed in the first frame wall. The first subsidiary flow way is in parallel the first main flow way. The first subsidiary outlet is positioned at the first upper end of the first frame body in flush with and in adjacency to the first main inlet.

A pump device, in particular submersible pump device, has at least one bearing receptacle which is configured for receiving a drive shaft end bearing, wherein the bearing receptacle has at least one cooling channel for receiving at least one cooling fluid.

A pump device, in particular submersible pump device, has at least one bearing receptacle which is configured for receiving a drive shaft end bearing, wherein the bearing receptacle has at least one cooling channel for receiving at least one cooling fluid.

An electrical submersible pumping system includes thrust bearings and radial bearings fabricated from a micro-grained polycrystalline diamond compact (“USPCD”) material that is ultra-strong; and where the USPCD is produced using a catalyst free process. In examples, all components of the bearings are formed from the ultra-strong USPCD material. Pads are in the bearings that have a contact surface, and the pads selectively tilt about a tilt member in response to variations in an opposing contact surface. The tilt members are attached to or otherwise associated with the pads, and are in contact with a resilient member that improves tilting response of the pads. The resilient members are encased in jackets that cover surfaces of the resilient members not in contact with the tilt members. The jackets are set in channels formed in structure of the bearings.

An electrical submersible pumping system includes thrust bearings and radial bearings fabricated from a micro-grained polycrystalline diamond compact (“USPCD”) material that is ultra-strong; and where the USPCD is produced using a catalyst free process. In examples, all components of the bearings are formed from the ultra-strong USPCD material. Pads are in the bearings that have a contact surface, and the pads selectively tilt about a tilt member in response to variations in an opposing contact surface. The tilt members are attached to or otherwise associated with the pads, and are in contact with a resilient member that improves tilting response of the pads. The resilient members are encased in jackets that cover surfaces of the resilient members not in contact with the tilt members. The jackets are set in channels formed in structure of the bearings.

A rocket engine propulsion system having improved engine performance is described herein. The rocket engine propulsion system includes an axial counterbalance to reduce or eliminate axial thrust exerted on components of a turbopump. The axial counterbalance can allow for a larger range of axial thrust forces while coupling this ability to a rotational speed (e.g., rotations per minute, or RPM) of a shaft. The axial counterbalance includes a rack and pinion system in which the rack can be teeth extending circumferentially around a shaft and the pinon can be teeth extending outwardly from a swing arm perpendicular to the shaft. The swing arm is rotatably attached to a bracket which is constrained by a static support. The swing arm can also include a weight on an end of the swing arm opposite the end of the swing arm including the pinion.

A catheter pump having a rotor shaft rotatably arranged in the inner catheter for driving an expandable conveyor element provided at the pump head. The conveyor element is rotatably mounted between a. distal hearing point and a proximal bearing point, wherein the outer catheter has a sleeve section on the distal end thereof surrounding the proximal bearing point, and wherein the proximal bearing point can be moved in the axial direction relative to the sleeve section in order to expand the conveyor element, wherein the proximal bearing point comprises a bearing receiver having a rotational bearing point for a rotary head rotationally fixed to the distal end of the rotor shaft, and a force application point at an axial distance to same for a force application section provided at the distal end of the inner catheter for axially moving the proximal bearing points relative to the sleeve section.

A catheter pump having a rotor shaft rotatably arranged in the inner catheter for driving an expandable conveyor element provided at the pump head. The conveyor element is rotatably mounted between a. distal hearing point and a proximal bearing point, wherein the outer catheter has a sleeve section on the distal end thereof surrounding the proximal bearing point, and wherein the proximal bearing point can be moved in the axial direction relative to the sleeve section in order to expand the conveyor element, wherein the proximal bearing point comprises a bearing receiver having a rotational bearing point for a rotary head rotationally fixed to the distal end of the rotor shaft, and a force application point at an axial distance to same for a force application section provided at the distal end of the inner catheter for axially moving the proximal bearing points relative to the sleeve section.

An electric centrifugal pump includes a water pump shell, a water sealing bearing, a water pump impeller, a spring washer, an inner motor cover, a bearing pedestal, a front rotor bearing, a motor stator, a motor rotor, a shaft of the motor rotor, a rear bearing of the motor rotor, a leading impeller, a leading impeller cover, a water pump driving control panel, a controller cover and a motor shell, and an internal forced cooling system is formed by the water inlet cavity of the water pump, an axial through hole of the shaft of the motor rotor, the leading impeller, a leading impeller cavity of the leading impeller, a spiral overflowing hole of the inner motor cover, a rotor cavity, a spiral overflowing hole of the bearing pedestal and the water pump impeller which are sequentially communicated.

An electric centrifugal pump includes a water pump shell, a water sealing bearing, a water pump impeller, a spring washer, an inner motor cover, a bearing pedestal, a front rotor bearing, a motor stator, a motor rotor, a shaft of the motor rotor, a rear bearing of the motor rotor, a leading impeller, a leading impeller cover, a water pump driving control panel, a controller cover and a motor shell, and an internal forced cooling system is formed by the water inlet cavity of the water pump, an axial through hole of the shaft of the motor rotor, the leading impeller, a leading impeller cavity of the leading impeller, a spiral overflowing hole of the inner motor cover, a rotor cavity, a spiral overflowing hole of the bearing pedestal and the water pump impeller which are sequentially communicated.