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1.发明公开公开(公告)号：US20240192047A1
公开(公告)日：2024-06-13
申请号：US18285330
申请日：2022-03-30
发明人： Hiroki Takeda , Satoshi Kumagai , Ryo Kawabata , Shuichi Ishizawa , Masahiko Yamashita , Yoshinori Tanaka
CPC分类号： G01H1/003 , F01D21/003 , F05D2200/11 , F05D2200/12 , F05D2220/31 , F05D2260/80 , F05D2270/80
摘要： The present invention relates to a rubbing position identification device for a rotating machine provided with a fixed part and a rotating part. This device is provided with an AE sensor, an axial vibration sensor and a rubbing position identification unit. In the case of rubbing occurring in the rotating machine, the rubbing position identification unit calculates the AE phase, which corresponds to the peak of an envelope determined on the base of change over time in the AE signal detected by the AE sensor, and the axial vibration phase, which corresponds to the high spot position of the rotating part specified on the basis of the change over time in the axial vibration signal detected by the axial vibration sensor, and, on the basis of the phase difference between these, identifies the circumferential-direction position of where rubbing has occurred in the rotating machine.
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2.发明公开公开(公告)号：US20240167395A1
公开(公告)日：2024-05-23
申请号：US18281879
申请日：2022-03-23
CPC分类号： F01D25/04 , F01D25/162 , F05D2220/31 , F05D2240/52 , F05D2270/333 , F05D2270/334
摘要： A rotating machine includes a rotating part rotatably supported by a bearing disposed between a first stationary part and a second stationary part. A rubbing position identification device determines, when rubbing occurs on the rotating machine, whether the occurrence position of the rubbing is a first unit including the first stationary part or a second unit including the second stationary part, based on an AE signal detected by a pair of first AE sensors attached to the first stationary part and the second stationary part, respectively.
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公开(公告)号：US20240142346A1
公开(公告)日：2024-05-02
申请号：US18278301
申请日：2022-03-02
发明人： Satoshi Kumagai , Ryo Kawabata , Shuichi Ishizawa , Masahiko Yamashita , Yoshinori Tanaka , Shinnosuke Haga
IPC分类号： G01M99/00
CPC分类号： G01M99/005
摘要： An AE signal is acquired from an AE sensor disposed on a fixed part of the rotating machine, and the presence or absence of rubbing in the rotating machine is determined, based on the AE signal. As a result, if the rubbing is determined to be present, a rubbing suppression operating condition imposed on control of the rotating machine is decided to suppress the rubbing.
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