Nuovo Pignone Spa

Nuovo Pignone Holding S.p.a.

Nuovo Pignone Srl

Nuovo Pignone International S.r.l.

Massimo Pinzauti

Luciano Mei

Manuele Bigi

Franco Frosini

Massimiliano Borghetti

Rajesh Mavuri

Giuseppe Vannini

Dino Bianchi

Marco Formichini

Carlo Bacciottini

Alberto Ceccherini

Alessio Anichini

Luca Innocenti

Giacomo Giovangrossi

The turbomachine comprises a stationary component, a rotary component, rotatingly supported in the stationary component, and a sealing arrangement between the rotary component and the stationary component. A cooling arrangement is further provided, which is configured and designed for delivering a cooling fluid to the sealing arrangement and removing heat therefrom.

Sealing clearance control in turbomachines

A motor includes a casing having a cavity, a stator configured to be attached to an inside of the cavity, an elastic cone configured to be attached to a first end of the casing, a rigid cone configured to be attached to a second end of the casing that is opposite to the first end, a non-metallic part configured to be attached to the elastic cone and the rigid cone, and a rotor provided inside the cavity and configured to rotate inside the stator. The casing, the elastic cone, the rigid cone, and the non-metallic part form a hermetic enclosure in which the entire stator is enclosed and the hermetic enclosure is configured to hold a cooling fluid that cools the stator and also to prevent the cooling fluid to reach the rotor.

Elastic cone for sealing and method

A compressor unit for processing a working fluid comprising a compressor inside a housing to compress the working fluid wherein a collection chamber is fluidly coupled with a working fluid inlet of said housing.

Compressor unit and a method to process a working fluid

A balancing group () is described for the rotor of a fluid rotary machine (), wherein the rotor is of the type comprising at least one shaft () equipped with an internal pass-through hole () which develops along the longitudinal axis (A) of the shaft (). The balancing group () includes at least a first inner element () and at least a second outer element (), the first inner element () being suitable for being engaged by interference, in the direction of the longitudinal axis (A), inside the second outer element (). The balancing group () thus formed is suitable for being inserted, in the direction of the longitudinal axis (A), inside the pass-through hole () of the shaft ().

Balancing group for the rotor of a fluid rotary machine

An improved connection of blades ( ) on a rotor disc ( ) of a gas turbine, of the type in which a root ( ) of each blade ( ) is inserted in a seat ( ) of the disc ( ) which is complementary to the blade, wherein the root ( ) is in the shape of an overturned isosceles triangle, with the two sides which converge at the base each having a grooved profile such as to form a series of teeth ( ) and with a lower end ( ) of the root ( ) which is formed by the joined connection of the two lower teeth ( ) of the two sides of the root ( ), the teeth ( ) of the root ( ) corresponding to grooves ( ) in the seat ( ) and the lower end ( ) of the root ( ) corresponding to an end groove ( ) in the seat ( ). This series of grooves ( ) extends along a line which is inclined relative to the axis of the seat ( ) by an angle &agr; of between 17&deg; and 23&deg;, and the grooves ( ) have straight sides with inclinations relative to the axis of the seat ( ) of angles &agr; and &agr; , wherein &agr; is between 42&deg; and 48&deg; whereas &agr; is between 94&deg; and 100&deg;.

Connection of blades on a rotor disc of a gas turbine

A flange ( ) for connection between an axial compressor and high-pressure rotor disc unit ( ) in a gas turbine ( ), wherein the flange ( ) has a body ( ) with a frusto-conical shape which is joined to a shaft ( ) of the axial compressor by means of a hub ( ) which has a cylindrical shape and which, at the larger base of the frustum of the cone of the body ( ) is connected to the rotor disc unit ( ) by means of an extension ( ) of the hub in the form of a circular ring, a circumferential recess ( ) provided in a surface ( ) of the extension ( ) which faces the rotor disc unit ( ) being connected by interference with a projection, which is complementary to the recess and is provided on the rotor disc unit ( ); the body ( ) has an outer generatrix which is inclined relative to the direction at right-angles to the axis (X) by an angle &agr; of between 25&deg; and 35&deg; and an inner generatrix which is inclined by an angle &agr; of between 12&deg; and 18&deg;.

Flange for connection between an axial compressor and high-pressure rotor disc unit in a gas turbine

Growing community of inventors

Florence, Italy

Massimo Pinzauti