TURBOMACHINES WITH DEVICES ON THE SURFACE (SAW) OR BULK (BAW) ACOUSTIC WAVES, MEASURING DEVICES AND INSTALLATION METHODS Russian patent published in 2022 - IPC F01D21/00 G01K11/26 G01K13/08 G01K7/16 

FIELD: mechanical engineering.

SUBSTANCE: object of the invention described in this document relates to turbomachines with devices on surface (SAW) or bulk (BAW) acoustic waves, measuring systems and installation methods. A system for measuring the environmental parameter at the rotor of a rotary machine is described; in accordance with some embodiments, the parameter to be measured is temperature, and the machine to be monitored is a turbomachine. The system includes at least a device (512) on surface (SAW) or bulk (BAW) acoustic waves electrically connected to an antenna (520), a parametrically controlled resistance device (532) and two identical cables (542, 544) electrically connecting the SAW or BAW device (512), respectively, with a resistance device (532), as well as a short-circuiting jumper (550), or an open cable, or an impedance-matched device. The SAW or BAW device (512) is located in the first zone of the rotor, while the parametrically controlled resistance device (532) is located in the second zone of the rotor that is at a distance from the first zone of the rotor. The polling device can receive environmental parameter values by sending RF signals to the SAW or BAW device (512) via the antenna (520).

EFFECT: accurate and reliable control of one or more environmental parameters at the rotor of a turbomachine, especially during its operation.

21 cl, 5 dwg