An assembly is provided for a turbine engine. This turbine engine assembly includes an impeller rotor, a seal land and a lip seal. The impeller rotor is configured to rotate about a rotational axis. The impeller rotor is configured from or otherwise includes impeller rotor material. The seal land extends axially along and circumferentially about the rotational axis. The seal land is mechanically attached to and rotatable with the impeller rotor. The seal land is configured from or otherwise includes seal land material that is different than the impeller rotor material. The lip seal radially engages the seal land.

An assembly is provided for a turbine engine. This turbine engine assembly includes an impeller rotor, a seal land and a lip seal. The impeller rotor is configured to rotate about a rotational axis. The impeller rotor is configured from or otherwise includes impeller rotor material. The seal land extends axially along and circumferentially about the rotational axis. The seal land is mechanically attached to and rotatable with the impeller rotor. The seal land is configured from or otherwise includes seal land material that is different than the impeller rotor material. The lip seal radially engages the seal land.

A arranged in the casing and configured to rotate around a vertical rotation axis. The rotor comprises at least one impeller having an impeller suction side and an impeller delivery side. The compressor includes a gas inlet and a gas outlet, as well as a gas flow path extending from the gas inlet to the gas outlet. An inlet plenum extends from the gas inlet towards the impeller suction side. At least one suction tube having a lower suction end and an upper discharge end is arranged such that the lower suction end thereof is arranged at a bottom of the inlet plenum. The suction tube extends upwardly towards the impeller suction side.

The present invention relates to a process for the oligomerization of C2 to C4 olefin(s) in a gas/liquid or all-liquid oligomerization reactor (c) using a solvent, an oligomerization catalyst and olefin(s), in which compression and premixing are performed between a liquid phase comprising the solvent and a gaseous phase comprising said gaseous olefin(s) by a multiphase pump (b), with partial or total dissolution of the olefin(s) of the gaseous phase in the liquid phase and/or premixing between the two phases, before introduction of the premix obtained into said reactor.

The present invention relates to a process for the oligomerization of C2 to C4 olefin(s) in a gas/liquid or all-liquid oligomerization reactor (c) using a solvent, an oligomerization catalyst and olefin(s), in which compression and premixing are performed between a liquid phase comprising the solvent and a gaseous phase comprising said gaseous olefin(s) by a multiphase pump (b), with partial or total dissolution of the olefin(s) of the gaseous phase in the liquid phase and/or premixing between the two phases, before introduction of the premix obtained into said reactor.

An exhaust motor of vacuum device comprises an electric motor comprising a motor casing and a drive shaft, and an air bucket connected to the electric motor. The air bucket defines an air inlet side and an air outlet side, at least one rotating fan driven by the drive shaft to generate a high-pressure airflow flowing from the air inlet side to the air outlet side is provided in the air bucket. The air bucket is provided with a diversion end plate forming a plurality of diversion passages, each of the diversion passages comprises an inlet and an outlet, and the inlet is located on an original output path of the high-pressure airflow. The diversion passages divert the high-pressure airflow to flow toward the motor casing, and turn the high-pressure airflow into a heat-dissipating airflow capable of exchanging heat with the motor casing.

A levering device includes a coupling block, a gripper, an operating rod, and a constraint sleeve. The coupling block includes a coupling chamber, two guide slots in communication with the coupling chamber, an extension rod, and an axial hole axially cut through the extension rod in communication with the coupling chamber. The operating rod being axially movably inserted through the axial hole into a bearing chamber of a housing of a motor-driven water lifting device to stop against respective one end of a wheel axle of the motor-driven water lifting device. The gripper is attachable to the two guide slots of the coupling block and includes two gripper blocks and two claw bars respectively connected to the gripper blocks. The constraint sleeve is sleeved onto the coupling block to stop the two claw bars in the respective the guide slots.

A levering device includes a coupling block, a gripper, an operating rod, and a constraint sleeve. The coupling block includes a coupling chamber, two guide slots in communication with the coupling chamber, an extension rod, and an axial hole axially cut through the extension rod in communication with the coupling chamber. The operating rod being axially movably inserted through the axial hole into a bearing chamber of a housing of a motor-driven water lifting device to stop against respective one end of a wheel axle of the motor-driven water lifting device. The gripper is attachable to the two guide slots of the coupling block and includes two gripper blocks and two claw bars respectively connected to the gripper blocks. The constraint sleeve is sleeved onto the coupling block to stop the two claw bars in the respective the guide slots.

A centrifugal gas compressor fed with a gas and a processing liquid comprises a rotor rotated by a prime mover. The rotor defines an internal axial cavity with a cylindrical surface, an annular peripheral collection cavity, and a tapered radial channel fluidly connecting the internal axial cavity and the annular peripheral collection cavity. With each rotation of the rotor, a portion of the processing fluid is swept into the inlet of the tapered radial channel and travels radially as a fluid piston under centrifugal force pushing and compressing a column of gas entrained in front of said fluid piston, and is expelled into the annular peripheral collection cavity where it undergoes centrifugal separation, leaving the compressed gas to be drawn off through the compressed gas outlet for downstream use. A method for compressing a gas is also provided.

A centrifugal gas compressor fed with a gas and a processing liquid comprises a rotor rotated by a prime mover. The rotor defines an internal axial cavity with a cylindrical surface, an annular peripheral collection cavity, and a tapered radial channel fluidly connecting the internal axial cavity and the annular peripheral collection cavity. With each rotation of the rotor, a portion of the processing fluid is swept into the inlet of the tapered radial channel and travels radially as a fluid piston under centrifugal force pushing and compressing a column of gas entrained in front of said fluid piston, and is expelled into the annular peripheral collection cavity where it undergoes centrifugal separation, leaving the compressed gas to be drawn off through the compressed gas outlet for downstream use. A method for compressing a gas is also provided.