Influence of the debris trajectory on output inductive signal in large-diameter particle detector

An effectively way to detect potential failures of mechanical equipment is to detect its lubricating oil. For ships and steam turbines, large-diameter wear debris detection sensors are recommended to meet the actual demand of high throughput. However, when wear debris cuts the magnetic line through the flow path, due to the coupling of gravity, lubricating oil and magnetic field, the wear debris move in a curve, which will have an important effect on the induced voltage of the sensor. Therefore, it is necessary to research the influence of the debris trajectory on the output signal of inductive sensor. A series of experimental was conducted in this paper to research the change of the corresponding induced voltage when the wear debris flows the magnetic field at different angles and the experimental results show that the radial angle affects not only the amplitude of the output signal but also the waveform. Conversely, the axial angle takes barley effect on the output signal.