A multiphase pump includes a housing having a pump inlet and a pump outlet for a process fluid, an inlet annulus configured to receive the process fluid from the pump inlet, a discharge annulus configured to discharge the process fluid into the pump outlet, a pump rotor configured to rotate about an axial direction and arranged within the housing, the pump rotor being configured to convey the process fluid from the inlet annulus to the outlet annulus, and a return line configured to return the process fluid from the high pressure side to the low pressure side, the return line including an inlet configured to receive the process fluid, an outlet configured to discharge the process fluid and a control valve configured to open and close the return line, the inlet of the return line arranged directly at the discharge annulus.

An electrical submersible pump (ESP) having a helico-axial centrifugal pump to lift fluid from a wellbore, and a submersible permanent magnet motor (PMM) to drive the helico-axial centrifugal pump.

An electrical submersible pump (ESP) having a helico-axial centrifugal pump to lift fluid from a wellbore, and a submersible permanent magnet motor (PMM) to drive the helico-axial centrifugal pump.

The invention provides a centrifugal pump, distinctive in that the pump comprises two or more stages; the last stage in the direction of flow has been adapted so that it provides a larger equilibrium droplet size than the upstream stages. Method of designing the pump and use of the pump.

The invention provides a centrifugal pump, distinctive in that the pump comprises two or more stages; the last stage in the direction of flow has been adapted so that it provides a larger equilibrium droplet size than the upstream stages. Method of designing the pump and use of the pump.

An energy-dissipating device and fluid processing system is provided containing a compressor, a motor, a secondary fluid re-circulation loop, a purge line, and a fluid conduit. The compressor is configured to receive a hot fluid including condensable and non-condensable components, and produce therefrom a primary compressed fluid stream and a secondary fluid stream. The motor is configured to drive the compressor and for ingress and egress of the secondary fluid stream. The secondary fluid re-circulation loop is configured to control an operating temperature of the motor. The secondary fluid re-circulation loop includes a first energy-dissipating device configured to remove excess heat from the secondary fluid stream. The purge line separates a first portion of the secondary fluid stream in the fluid re-circulation loop from a second portion of the secondary fluid stream being returned to the motor. The fluid conduit receives the primary compressed fluid stream from the compressor.

An energy-dissipating device and fluid processing system is provided containing a compressor, a motor, a secondary fluid re-circulation loop, a purge line, and a fluid conduit. The compressor is configured to receive a hot fluid including condensable and non-condensable components, and produce therefrom a primary compressed fluid stream and a secondary fluid stream. The motor is configured to drive the compressor and for ingress and egress of the secondary fluid stream. The secondary fluid re-circulation loop is configured to control an operating temperature of the motor. The secondary fluid re-circulation loop includes a first energy-dissipating device configured to remove excess heat from the secondary fluid stream. The purge line separates a first portion of the secondary fluid stream in the fluid re-circulation loop from a second portion of the secondary fluid stream being returned to the motor. The fluid conduit receives the primary compressed fluid stream from the compressor.

A motor-driven water lifting device of which the water lifting device includes housing having water-lifting wheel mounted in accommodation chamber therein, water supply pipe disposed at the periphery of the housing and having water inlet for guiding water into accommodation chamber and water outlet for guiding water out of accommodation chamber, and air inlet hole located on water supply pipe for allowing an external gas to be filled into accommodation chamber of housing so that when water is guided through the water inlet into accommodation chamber, the intake water is agitated by the water-lifting wheel and mixed with the external gas in the accommodation chamber to form a bubble water. The water molecules of the bubble water are finely mixed by mixing with the gas, and the fine bubble water is suitable for cleaning various objects to achieve an optimized cleaning effect.

A motor-driven water lifting device of which the water lifting device includes housing having water-lifting wheel mounted in accommodation chamber therein, water supply pipe disposed at the periphery of the housing and having water inlet for guiding water into accommodation chamber and water outlet for guiding water out of accommodation chamber, and air inlet hole located on water supply pipe for allowing an external gas to be filled into accommodation chamber of housing so that when water is guided through the water inlet into accommodation chamber, the intake water is agitated by the water-lifting wheel and mixed with the external gas in the accommodation chamber to form a bubble water. The water molecules of the bubble water are finely mixed by mixing with the gas, and the fine bubble water is suitable for cleaning various objects to achieve an optimized cleaning effect.

A mixture of hydrocarbons in vapour phase is passed through a feed scrubber. Feed scrubber vapour discharged from the feed scrubber is passed to a compression suction scrubber, and a vaporous compressor feed stream from the compression suction scrubber is compressed in a compressor train. A compressed vaporous discharge stream from the train of compressors is de-superheated, and at least a portion of the de-superheated stream is passed to a condenser, wherein this portion of the de-superheated stream is at least partly condensed to form a pressurized and at least partially condensed mixture of hydrocarbons. A recycle portion is split off from the de-superheated hydrocarbon stream, and a recycle flow is established to the compressor train of via a surge recycle separator drum and the compression suction scrubber. Liquid constituents removed and drained from the recycle portion in the surge recycle separator drum are fed to the feed scrubber.