US 11,933,184 B2
Turbomachines with SAW or BAW devices, measuring arrangements and installation methods
Filippo Gerbi, Florence (IT); Marco Marrazzo, Florence (IT); and Lorenzo Miris, Pontassieve (IT)
Assigned to Nuovo Pignone Technologie SRL, Florence (IT)
Filed by Nuovo Pignone Tecnologie—S.r.l., Florence (IT)
Filed on Jun. 17, 2021, as Appl. No. 17/304,275.
Application 17/304,275 is a continuation of application No. PCT/EP2019/025469, filed on Dec. 20, 2019.
Claims priority of application No. 102018000020677 (IT), filed on Dec. 21, 2018.
Prior Publication US 2021/0310369 A1, Oct. 7, 2021
Int. Cl. F01D 21/00 (2006.01); G01K 11/26 (2006.01); H03H 9/00 (2006.01)
CPC F01D 21/003 (2013.01) [G01K 11/265 (2013.01); H03H 9/0009 (2013.01); H03H 9/0014 (2013.01); F05D 2260/80 (2013.01); F05D 2270/80 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A turbomachine, comprising:
a rotor and a stator, the rotor having temperature zones, including a low-temperature zone and a high-temperature zone, that are remote from each other;
a SAW device with a first antenna and located in the low-temperature zone,
a temperature-sensitive impedance device located in the high-temperature zone,
a first cable electrically coupling the SAW device and the temperature-sensitive impedance device, and
an interrogator with a second antenna located on the stator close to the first antenna of the SAW device at least for a time interval, and
a second cable, identical to the first cable,
electrically coupling the SAW device at a first end and short-circuited at a second end.