Nuovo Pignone Spa

Nuovo Pignone Srl

Nuovo Pignone Tecnologie Srl

Sergio Palomba

Massimo Camatti

Marco De Iaco

Andrea Masi

Bugra Han Ertas

Lorenzo Bergamini

Gabriele Mariotti

Silvio Giachetti

Dante Tommaso Rubino

Francesco Grifoni

Alessio Anichini

Andrea Masala

Simone Billi

Lorenzo Lorenzi

Lorenzo Bianchi

Stefano Casadio

Giovanni Ballerini

Adriano Grossi

Fabrizio Mammoliti

Alessandro Pagliantini

Anichini Alessio

Grifoni Francesco

Alessandro Bacci

A shaftless motor-compressor is disclosed, comprising a casing and at least one compressor stage arranged in the casing. Each compressor stage comprises a respective impeller arranged for rotation in the casing around a rotation axis. Each impeller is combined with an embedded electric motor housed in the casing and comprised of a motor stator and a motor rotor. The motor stator of each compressor stage circumferentially surrounds the impeller and the motor rotor, integral with the impeller. The motor rotor of each stage is arranged inside the respective motor stator.

Motor-compressor with stage impellers integrated in the motor-rotors

A manufacturing technique for impellers for a centrifugal rotating machine is provided. The impeller is made by composition of single vanes pieces that fit to the hub or directly to the rotor shaft by welding, friction welding or a mechanical locking system. The manufacturability of the segments is easy fast and cheap and make it possible to use advanced manufacturing technologies like additive manufacturing of the type of Direct Metal Laser Melting.

Method for making an impeller from sector segments

Systems, devices and methods according to these exemplary embodiments provide couplings or interfaces usable, for example, in the high speed balance testing of rotors are provided. A coupling includes a main body portion having an extended thin portion therein which is configured to fit a shaft of the balancing machine and an extended insert portion which is configured to fit an opening in the rotor. A plurality of connection elements is disposed in holes in the main body portion of the coupling and a ring is disposed over the extended insert and proximate exits of the holes in the main body portion.

Coupling for rotor balancing

A centrifugal compressor includes a rotor assembly with a shaft and a plurality of impellers, bearings located at ends of the shaft and configured to support the rotor assembly, a sealing mechanism disposed between the rotor assembly and the bearings, and a gas bearing disposed between the plurality of impellers for supporting the shaft and receiving a working gas from an impeller downstream from a location of the gas bearing.

Mid-span gas bearing

Systems and methods include using a subsea machine for separating a mixture received from a seabed well. The subsea machine includes: a chamber configured to receive and separate by gravity the mixture received from the seabed well. The chamber includes: a housing configured to contain the mixture received from the undersea well during separation, and a piston provided inside the housing and separating the housing into a top section and a bottom section. The piston is configured to move in a first direction along an axis to create more space in the top section for receiving the mixture from the seabed well and to move in a second opposite direction along the axis for removing the mixture from the chamber after separation has occurred.

Subsea machine and methods for separating components of a material stream

Method, retention mechanism and bearing device for retaining at least one pad inside the bearing device. The bearing device includes a ring having at least a retaining head, at least one pad disposed inside the ring and having a bottom recess portion configured to receive the at least a retaining head, the at least one pad being configured to pivot on the at least a retaining head, and a retention mechanism configured to retain the at least one pad within a predetermined volume inside the ring. The retention mechanism is configured to apply a retaining force on the at least one pad, in addition to a force between the retaining head and the at least one pad, where the retaining force acts substantially along a radial direction of the ring, away from a center of the ring.

Bearing device, retention mechanism and method for retaining at least one pad

Method, pad and bearing device for oil redistribution. The bearing device includes a ring having at least one retaining head, at least one pad disposed inside the ring and having a bottom recess portion configured to receive the at least one retaining head, an oil distribution mechanism configured to inject oil at a leading edge of the at least one pad to flow towards a trailing edge of the at least one pad, and an oil redistribution mechanism on the at least one pad configured to redistribute the oil from the trailing edge of the at least one pad to the leading edge of the at least one pad. The leading edge is a first edge and the trailing edge is a second edge of the at least one pad encountered when traveling along a circumference of the ring in a direction of rotation of a rotor supported by the at least one pad.

Bearing device, oil distribution mechanism and method

An integrated high-pressure compression unit for a process fluid that includes at least a first compression device able to compress the process fluid from a essentially gaseous initial thermodynamic state to an intermediate thermodynamic state, a second compression device connected mechanically to the first compression device and able to compress the process fluid from the intermediate thermodynamic state to a final thermodynamic state, a motor device able to drive the first compression device and the second compression device, and a pressure casing or housing in which at least the said first and second compression devices are mechanically coupled to each other.

High-pressure compression unit for process fluids for industrial plant and a related method of operation

Growing community of inventors

Florence, Italy

Sergio Palomba