| 摘要 |
To provide a canned-motor bearing abrasion monitor capable of monitoring not only a radial abrasion of a bearing but also other directional abrasions of the bearing though a conventional canned-motor bearing abrasion monitor monitors only a radial abrasion of a bearing causing a rotor to be displaced in its radial direction but it cannot monitor abrasions in other directions. A detection circuit is used which is constituted by mounting two pairs of detection coils faced each other at an interval of 180 DEG to the both end of a stator iron-core tooth portion in its longitudinal direction respectively and connecting an output indicator to a parallel circuit constituted by connecting differential output connection circuits of one pair of detection coils faced each other at an interval of 180 DEG at the both ends through a diode in parallel and a series circuit constituted by connecting differential output connection circuits of the other pair of detection coils mounted at an interval of 180 DEG and faced each other at the longitudinal both ends in series. <IMAGE> |
