公开(公告)号：WO2021197665A8

公开(公告)日：2021-10-07

申请号：PCT/EP2021/025111

申请日：2021-03-19

Applicant: NUOVO PIGNONE TECNOLOGIE - S.R.L.

Inventor： CANGIOLI, Francesco ,  BILIOTTI, Davide ,  ORTIZ NERI, Massimiliano ,  SASSANELLI, Giuseppe ,  MICHELASSI, Vittorio

IPC: F02C1/10 ,  F02C7/06 ,  F01D25/24 ,  F01D15/10 ,  F05D2220/62 ,  F05D2220/76 ,  F05D2240/51 ,  F05D2260/211

Abstract: An integrated hermetically sealed turboexpander-generator (21) comprises a hermetically sealed casing arrangement (23), a turboexpander (25), a compressor (27) and an electric generator (29), arranged in the hermetically sealed casing arrangement (23) along a common shaft line (31), supported by active magnetic bearings. Also disclosed is a thermodynamic system (1) using the integrated hermetically sealed turboexpander- generator (21) to convert waste heat from a waste heat source (7) into electric power. The electric generator (29) is arranged at one end of the common shaft line (31).

公开(公告)号：WO2021197664A1

公开(公告)日：2021-10-07

申请号：PCT/EP2021/025110

申请日：2021-03-19

Applicant: NUOVO PIGNONE TECNOLOGIE - S.R.L.

Inventor： CANGIOLI, Francesco ,  BILIOTTI, Davide ,  ORTIZ NERI, Massimiliano ,  SASSANELLI, Giuseppe ,  MICHELASSI, Vittorio

IPC: F02C1/10 ,  F02C7/06 ,  F01D25/24 ,  F01D15/10 ,  F05D2220/62 ,  F05D2220/76 ,  F05D2240/51 ,  F05D2260/211

Abstract: An integrated hermetically sealed turboexpander-generator (21) comprises a hermetically sealed casing arrangement (23), a turboexpander (25), a compressor (27) and an electric generator (29), arranged in the hermetically sealed casing arrangement (23) along a common shaft line (31), supported by active magnetic bearings. Also disclosed is a thermodynamic system (1) using the integrated hermetically sealed turboexpander- generator (21) to convert waste heat from a waste heat source (7) 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.

公开(公告)号：WO2020135931A1

公开(公告)日：2020-07-02

申请号：PCT/EP2019/025489

申请日：2019-12-26

Applicant: NUOVO PIGNONE TECNOLOGIE - S.R.L.

Inventor： DEVI, Ravindra ,  MICHELASSI, Vittorio ,  MERLO, Roberto ,  PARIK, Devender

IPC: F01D25/00

Abstract: A stator aerodynamic component (130, 250) is disclosed to be placed inside a flow path (500) of a working fluid of a turbomachine (1000); the component (130, 250) has one or more nozzles (135, 255) for ejecting a liquid into the flow path (500); the liquid to be ejected comes from a duct (134, 254) internal to the component (130, 250) and in fluid communication with a pipe (120, 220) that is external to the component (130, 250). Also disclosed is a method for cleaning a turbomachine by ejecting a washing liquid from one or more one stator aerodynamic components.

公开(公告)号：WO2022152579A1

公开(公告)日：2022-07-21

申请号：PCT/EP2022/025007

申请日：2022-01-10

Applicant: NUOVO PIGNONE TECNOLOGIE - S.R.L.

Inventor： STRAMARE, Stefania ,  TOGNARELLI, Leonardo ,  MICHELASSI, Vittorio ,  BALDI, Gino ,  MASI, Gabriele

IPC: F01D5/20 ,  F01D11/12

Abstract: The disclosure concerns an abrasive gas turbine blade tip cap preform (11) for bonding to a blade tip to form an abrasive blade tip cap, the abrasive gas turbine blade tip cap preform (11) being formed of a bonding layer (12) and an abrasive layer (13), the bonding layer (12) being a metallic layer comprising powder size particles of a nickel braze alloy and a nickel base superalloy, and the abrasive layer (13) being a ceramic layer in a metal matrix comprising powder size particles of cubic boron nitride (cBN) and aluminum oxide (AI2O3) in a metal matrix of same composition of the bonding layer (12). The disclosure also concerns a method of manufacturing an abrasive gas turbine blade tip cap preform (11 ) and a method of bonding the abrasive gas turbine blade tip cap preform (11 ) to a blade tip to form an abrasive blade tip cap.

公开(公告)号：WO2021197665A1

公开(公告)日：2021-10-07

申请号：PCT/EP2021/025111

申请日：2021-03-19

Applicant: NUOVO PIGNONE TECNOLOGIE - S.R.L.

Inventor： CANGIOLI, Francesco ,  BILIOTTI, Davide ,  ORTIZ NERI, Massimiliano ,  SASSANELLI, Giuseppe ,  MICHELASSI, Vittorio

IPC: F02C1/10 ,  F02C7/06 ,  F01D25/24 ,  F01D15/10 ,  F05D2220/62 ,  F05D2220/76 ,  F05D2240/51 ,  F05D2260/211

Abstract: An integrated hermetically sealed turboexpander-generator (21) comprises a hermetically sealed casing arrangement (23), a turboexpander (25), a compressor (27) and an electric generator (29), arranged in the hermetically sealed casing arrangement (23) along a common shaft line (31), supported by active magnetic bearings. Also disclosed is a thermodynamic system (1) using the integrated hermetically sealed turboexpander- generator (21) to convert waste heat from a waste heat source (7) into electric power. The electric generator (29) is arranged at one end of the common shaft line (31).

公开(公告)号：WO2021148239A1

公开(公告)日：2021-07-29

申请号：PCT/EP2021/025012

申请日：2021-01-15

Applicant: NUOVO PIGNONE TECNOLOGIE - S.R.L.

Inventor： TONI, Lorenzo ,  MICHELASSI, Vittorio ,  GUGLIELMO, Alberto ,  GATTA, Guiseppe ,  PANIZZA, Andrea

IPC: F04D29/44 ,  F04D29/66 ,  F04D29/444 ,  F04D29/666 ,  F05D2260/961

Abstract: A return channel (15) for a centrifugal turbomachine (1). The return channel includes a plurality of return channel vanes (15.1), arranged around a return channel axis (A- A). Each return channel vane (15.1) includes: a leading edge (15.3) at a first distance from the return channel axis (A- A), a trailing edge (15.5) at a second distance from the return channel axis, the second distance being smaller than the first distance. A respective flow passage is defined between each pair of adjacently arranged return channel vanes (15.1). The return channel vanes (15.1) are arranged with a non-constant pitch around the return channel axis (A- A).

公开(公告)号：WO2021148237A1

公开(公告)日：2021-07-29

申请号：PCT/EP2021/025010

申请日：2021-01-15

Applicant: NUOVO PIGNONE TECNOLOGIE - S.R.L.

Inventor： TONI, Lorenzo ,  MICHELASSI, Vittorio

IPC: F04D29/44 ,  F04D29/66 ,  F04D29/444 ,  F04D29/666 ,  F05D2250/52 ,  F05D2260/961

Abstract: A novel diffuser (11) for a centrifugal turbomachine (1) to reduce or prevent stall. The diffuser includes diffuser vanes (11.1) arranged around a diffuser axis (A-A). Each diffuser vane (11.1) includes: a leading edge (11.3), a trailing edge (11.5), a suction side (11.7) facing radially inwardly, and a pressure side (11.9) facing radially outwardly. A respective flow passage is defined between the suction side (11.7) of a first diffuser vane (11.1) and the pressure side (11.9) of a second diffuser vane (11.1) of each pair of adjacently arranged diffuser vanes. The diffuser vanes (11.1) are arranged with a non-constant pitch around the diffuser axis (A- A). The pitch (S1, S2) between each pair of adjacently arranged first diffuser vane (11.1) and second diffuser vane (11.1) defining a respective flow passage therebetween is correlated to a chord of one of said first diffuser vane (11.1) and second diffuser vane (11.1).