Cavitation detection system, method for detecting cavitation
AssigneeInstitut von Karman de Dynamique des Fluides
InventorJorge Manuel MOUTINHO NEVES MOREIRA DE PINHO
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Abstract
Cavitation detection system for detecting cavitation in a hydraulic system, the detection system comprising a first temperature sensor configured to be positioned at a first position in the hydraulic system; a second temperature sensor configured to be position at a second position in the hydraulic system, the second position being downstream of the first position; a control unit configured to receive the temperature values sensed by the first and second temperature sensors and configured to, if a temperature difference is detected, issue a cavitation detection signal.
Claims22
A method for detecting cavitation in a hydraulic system, the method comprising:
- measuring a first temperature at a first position in the hydraulic system;
- measuring a second temperature at a second position in the hydraulic system;
- wherein the second position is downstream of the first position with a part of the system in which cavitation is to be monitored in between;
- evaluating exclusively a temperature difference between the first and second temperature;
- and
- issuing, solely if a temperature difference is detected, a cavitation detection signal.
A method for retrofitting a hydraulic system for cavitation detection, the method comprising:
- placing a first temperature sensor at a first position in the hydraulic system, wherein the first temperature sensor contacts an outer wall of the hydraulic system;
- placing a second temperature sensor at a second position in the hydraulic system, the second position being downstream of the first position, wherein the second temperature sensor contacts an outer wall of the hydraulic system;
- providing a control unit configured to receive detected temperature values from the first temperature sensor and the second temperature sensor;
- and
- issuing a cavitation detection signal solely if a temperature difference is detected.
A detection system for detecting cavitation in a hydraulic system, the detection system comprising:
- a first temperature sensor configured to be positioned at a first position in the hydraulic system;
- a second temperature sensor configured to be position at a second position in the hydraulic system, the second position being downstream of the first position;
- and
- a control unit configured to receive the temperature values sensed by the first and second temperature sensors and configured to, if a temperature difference is detected, issue a cavitation detection signal;
- wherein the detection system is devoid of any pressure sensors.
A detection system for detecting cavitation in a hydraulic system, the detection system comprising a differential temperature sensor exclusively monitoring a temperature difference between a first position and a second position downstream of the first position, and an alert unit configured to issue an alert signal when a temperature difference is detected.
A flow restriction unit for use in a hydraulic system, the flow restriction unit comprising an inlet pipeline section and an outlet pipeline section with the flow restriction in between, wherein the flow restriction unit comprises a first temperature sensor configured to be positioned at the inlet pipeline section;
- a second temperature sensor configured to be positioned at the outlet pipeline section, wherein the temperature sensors are operationally connected with a control unit configured to receive the temperature values sensed by the first and second temperature sensors and configured to, if a temperature difference is detected, issue a cavitation detection signal, the flow restriction unit being devoid of pressure sensors.
Dependencies are inferred from the claim text.