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    BEARING WEAR MONITORING
    1.
    发明公开
    BEARING WEAR MONITORING 审中-公开

    公开(公告)号：US20240093692A1

    公开(公告)日：2024-03-21

    申请号：US18256551

    申请日：2021-12-14

    申请人： Edwards Limited

    发明人： James Alexander Haylock ,  Christopher Miles ,  Alexander James Patey

    IPC分类号： F04D27/00 ,  F04D29/056 ,  G01M13/04

    CPC分类号： F04D27/001 ,  F04D29/056 ,  G01M13/04

    摘要： A monitoring apparatus includes: input reception circuitry configured to receive a signal indicative of a characteristic of rotating assembly rotation; and bearing wear monitoring circuitry configured to analyze the signal characteristic of rotating assembly rotation. The bearing wear monitoring circuitry is also configured to identify one or more signal features indicative of bearing wear. Bearing wear produces variation in rolling friction of the bearing and therefore is one cause of variation in shaft torque. Aspects recognise that variations in shaft torque can be indirectly monitored, measured and/or determined by appropriate measurement or monitoring of operational characteristics of a pump motor and that it may be possible to distinguish variations in shaft torque which can be attributed to bearing wear from those variations in shaft torque caused by one or more other factors.

    PUMP MONITORING SYSTEM AND METHOD
    2.
    发明公开
    PUMP MONITORING SYSTEM AND METHOD 审中-公开

    公开(公告)号：US20240254996A1

    公开(公告)日：2024-08-01

    申请号：US18561542

    申请日：2022-05-19

    申请人： Edwards Limited

    发明人： Michael Simmonds ,  Alexander James Patey ,  Christopher Miles

    IPC分类号： F04D27/00 ,  F04D19/04 ,  F04D29/66

    CPC分类号： F04D27/001 ,  F04D19/042 ,  F04D29/661 ,  F05D2270/333 ,  F05D2270/81

    摘要： A pump monitoring system includes a controller and a microphone for detecting sound waves. The controller is configured to receive an audio signal from the microphone representing sound waves generated by the vacuum pump. The controller processes the received audio signal to generate a frequency domain representation of the audio signal. The frequency domain representation of the audio signal is analysed to identify at least one fault condition frequency component indicative of a fault condition. A fault condition signal is output to identify the fault condition in dependence on the identification of the at least one fault condition frequency component. In a further embodiment, the pump monitoring system comprises a vibration sensor for detecting vibrations. The present invention also relate to a vacuum pump; a method of monitoring a vacuum pump; and a nontransitory computer-readable medium.

    PUMP ASSEMBLY, METHOD AND COMPUTER PROGRAM
    4.
    发明申请
    PUMP ASSEMBLY, METHOD AND COMPUTER PROGRAM 审中-公开

    公开(公告)号：US20190162748A1

    公开(公告)日：2019-05-30

    申请号：US16309379

    申请日：2017-05-16

    申请人： Edwards Limited

    发明人： James Alexander Haylock ,  Alexander James Patey ,  Michael Simmonds

    IPC分类号： G01P15/08 ,  F04D25/06 ,  F04D27/00

    摘要： A pump assembly method and computer program are disclosed. The pump assembly comprises: a pump, an associated motor controller and an accelerometer mounted on the pump. The motor controller is configured to control power supplied to drive the pump and to receive data output from the accelerometer, the motor controller comprising processing circuitry configured to process the data received from the accelerometer to determine accelerations experienced at the pump due to the pump operation. These accelerations can be used to determine a condition of the pump.