Nuovo Pignone Tecnologie Srl

Vetco Gray Scandinavia As

Michael Catanzaro

Lorenzo Bergamini

Matteo Berti

Giacomo Landi

Silvio Giachetti

Dante Tommaso Rubino

Erik Mele

Matteo Dall'ara

Federico Florindo

A system and modular compressor for raising the pressure in production gas is disclosed, wherein in a set of compressor modules each second module is a rotor module carrying an impeller driven in rotation relative to an adjacent stationary module, a rotor module and a stationary module in combination providing a compressor stage in which production gas is accelerated through a flow duct that passes an interface between the rotor module and the stationary module, wherein at the interface at least one bearing for axial and/or radial load is provided for journaling the rotor module on the stationary module. The at least one bearing is a gas bearing, wherein a passage is arranged in the stationary module to lead an extracted portion of production gas at raised pressure from the compressor to the gas bearing(s).

Modular compressor with gas bearings and system for raising the pressure in production gas

A turboexpander-generator unit including a casing with a gas inlet and a gas outlet. The unit further comprises a turboexpander having a turboexpander rotor mounted on a shaft supported for rotation in the casing, and an electric generator arranged in the casing and comprised of a generator stator and a generator rotor mounted on the shaft, for co-rotation with the turboexpander rotor. The unit also comprises a plurality of bearings configured and arranged for rotatingly supporting the shaft in the casing. A gas flow path from the gas inlet to the gas outlet, which extends through the turboexpander and the electric generator. Compressed working gas expands in the turboexpander and generates mechanical power for rotating the generator rotor. The expanded working gas from the turboexpander flow through the electric generator and removes heat therefrom. The bearings comprise gas-lubricated bearings, lubricated with the working gas.

Integrated turboexpander-generator with gas-lubricated bearings

Growing community of inventors

Florence, Italy

Michael Catanzaro