US 12,326,095 B2
Integrated hermetically sealed turboexpander-generator with an electric generator at an end of a common shaft line
Francesco Cangioli, Florence (IT); Davide Biliotti, Florence (IT); Massimiliano Ortiz Neri, Florence (IT); Giuseppe Sassanelli, Florence (IT); and Vittorio Michelassi, Florence (IT)
Assigned to Nuovo Pignone Tecnologie—S.R.L., Florence (IT)
Appl. No. 17/907,200
Filed by NUOVO PIGNONE TECNOLOGIE—S.R.L., Florence (IT)
PCT Filed Mar. 19, 2021, PCT No. PCT/EP2021/025111
§ 371(c)(1), (2) Date Sep. 23, 2022,
PCT Pub. No. WO2021/197665, PCT Pub. Date Oct. 7, 2021.
Claims priority of application No. 102020000006727 (IT), filed on Mar. 31, 2020.
Prior Publication US 2023/0332508 A1, Oct. 19, 2023
Int. Cl. F01D 25/24 (2006.01); F01D 15/10 (2006.01); F02C 6/18 (2006.01); F02C 7/06 (2006.01); H02K 7/09 (2006.01); H02K 7/18 (2006.01)
CPC F01D 25/24 (2013.01) [F01D 15/10 (2013.01); F02C 6/18 (2013.01); F02C 7/06 (2013.01); H02K 7/09 (2013.01); H02K 7/1823 (2013.01); F05D 2220/76 (2013.01); F05D 2240/51 (2013.01); F05D 2240/55 (2013.01); F05D 2260/211 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An integrated hermetically sealed turboexpander-generator, comprising:
a pair of hermetically sealed casings comprising a first casing and a second casing,
the first casing enclosing;
a turboexpander;
a fluid pressurizing turbomachine;
a first shaft having a first end and a second end; and
active magnetic bearings disposed on the shaft,
wherein the turboexpander and the fluid pressurizing turbomachine are arranged on the first shaft with the turboexpander disposed between a first active magnetic bearing and a second active magnetic bearing and the fluid pressurizing turbomachine disposed on the second end between the second active magnetic bearing and a third active magnetic bearing, and
the second casing enclosing:
an electric generator;
a second shaft having a first end and a second end; and
a fourth active magnetic bearing and a fifth active magnetic bearing disposed on the second shaft,
wherein the electric generator is arranged on the second shaft between the fourth active magnetic bearing and the fifth active magnetic bearing, and
a magnetic joint adjoining the first end of the first shaft and the first end of the second shaft.