Nuovo Pignone Tecnologie Srl

Vetco Gray Scandinavia As

Vittorio Michelassi

Francesco Cangioli

Matteo Dozzini

Massimiliano Borghetti

Giuseppe Sassanelli

Massimiliano Ortiz Neri

Davide Biliotti

Giacomo Landi

Roberto Merlo

Lorenzo Toni

Ravindra Devi

Devender Parik

Sebastian Walter Freund

Stefano Francini

A compressor or pump stage is provided. The compressor or pump stage at least comprising a central shaft and at least one rotor, wherein an axis of rotation of the at least one rotor is the central shaft, wherein at least two axial thrust bearings are arranged axially remote from each other and being associated with each of the at least one rotor and at least two radial bearings arranged between the at least two axial thrust bearings and the at least one rotor comprises a number, n, of rows of impellers arranged at an outer perimeter of the at least one rotor with an axial distance between neighbouring rows of impellers, where n={2, 3, 4 . . . }

Arrangement for pressurizing of fluid

An integrated hermetically sealed turboexpander-generator comprises a hermetically sealed casing arrangement, a turboexpander, a compressor and an electric generator, arranged in the hermetically sealed casing arrangement along a common shaft line, supported by active magnetic bearings. Also disclosed is a thermodynamic system using the integrated hermetically sealed turboexpander-generator to convert waste heat from a waste heat source into electric power. The electric generator is arranged at one end of the common shaft line.

Integrated hermetically sealed turboexpander-generator with an electric generator at an end of a common shaft line

An integrated hermetically sealed turboexpander-generator comprises a hermetically sealed casing arrangement, a turboexpander, a compressor and an electric generator, arranged in the hermetically sealed casing arrangement along a common shaft line, supported by active magnetic bearings. Also disclosed is a thermodynamic system using the integrated hermetically sealed turboexpander-generator to convert waste heat from a waste heat source into electric power. One of the turboexpander and of the compressor comprises two sections arranged in an overhung configuration at the ends of the common shaft line.

Integrated hermetically sealed turboexpander-generator with overhung turbomachine

A novel diffuser for a centrifugal turbomachine to reduce or prevent stall. The diffuser includes diffuser vanes arranged around a diffuser axis. Each diffuser vane includes: a leading edge, a trailing edge, a suction side facing radially inwardly, and a pressure side facing radially outwardly. A respective flow passage is defined between the suction side of a first diffuser vane and the pressure side of a second diffuser vane of each pair of adjacently arranged diffuser vanes. The diffuser vanes are arranged with a non-constant pitch around the diffuser axis. The pitch between each pair of adjacently arranged first diffuser vane and second diffuser vane defining a respective flow passage there between is correlated to a chord of one of said first diffuser vane and second diffuser vane.

Diffuser with non-constant diffuser vanes pitch and centrifugal turbomachine including said diffuser

A stator aerodynamic component is disclosed to be placed inside a flow path of a working fluid of a turbomachine; the component has one or more nozzles for ejecting a liquid into the flow path; the liquid to be ejected comes from a duct internal to the component and in fluid communication with a pipe that is external to the component. Also disclosed is a method for cleaning a turbomachine by ejecting a washing liquid from one or more one stator aerodynamic components.

Stator aerodynamic components with nozzles and methods for cleaning a turbomachine

A compressor or pump stage is provided. The compressor or pump stage at least comprising a central shaft () and one rotor (), where the axis of rotation of the rotor () is the central shaft () and where the rotor comprises a number, n, of rows of impellers () arranged at an outer perimeter of the rotor with an axial distance between neighbouring rows of impellers (), where n={2, 3, 4 . . . }.

Growing community of inventors

Florence, Italy

Vittorio Michelassi