US 12,247,568 B2
Method for detecting the state of operation of a rotating machine
Jochen Mades, Frankenthal (DE); Franz Bosbach, Frankenthal (DE); and Tobias Klunke, Frankenthal (DE)
Assigned to KSB SE & Co. KGaA, Frankenthal (DE)
Appl. No. 17/271,838
Filed by KSB SE & Co. KGaA, Frankenthal (DE)
PCT Filed Aug. 28, 2019, PCT No. PCT/EP2019/072955
§ 371(c)(1), (2) Date Feb. 26, 2021,
PCT Pub. No. WO2020/043772, PCT Pub. Date Mar. 5, 2020.
Claims priority of application No. 10 2018 214 533.4 (DE), filed on Aug. 28, 2018; and application No. 10 2019 006 038.5 (DE), filed on Aug. 27, 2019.
Prior Publication US 2021/0317832 A1, Oct. 14, 2021
Int. Cl. F04D 15/00 (2006.01); F04D 29/046 (2006.01)
CPC F04D 15/0077 (2013.01) [F04D 29/046 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method for detecting the state of operation of a rotating machine having at least one first temperature sensor for detecting a temperature change at at least one bearing region of an element of the rotating machine element and an evaluation unit, comprising the steps of:
sensing a temperature profile at the at least one bearing region using the at least one first temperature sensor;
identifying using the evaluation unit a sign, and magnitude of a maximum temperature change, of temperature gradients in the temperature profile; and
identifying using the evaluation unit, from the sign, and the magnitude of the maximum temperature change, of the temperature gradients, at least one of a switch-on event and a switch off event of rotational movement of the rotating machine, wherein
the at least one first temperature sensor is mounted on a bearing support.