Rod Drop 为何物?(往复压缩机)? 原文地址: http://www.sensorland.com/HowPage038.html ROD DROP MONITORING This technique uses an eddy current probe to measure the relative position of the compressor rod. For horizontal rods, the probe is mounted vertically above or below the rod so that a change in vertical position of the rod is measured as a change in probe driver output voltage. Ideally the gap should remain the same over the entire travel of the rod. In practice the rod position will vary due to running clearances and may even bow when subjected to the compression and tension forces. Nevertheless by plotting the probe gap on a continuous basis and looking for changes in value it is possible to identify faults such as rider band wear. Rod drop monitoring has the advantage that it only detects those faults associated with changes in rod behaviour, enabling the engineer to target a well-defined area of the machine when investigating problems. One disadvantage is that for retrofits the machine must he stripped to install the probes. 查看更多6个回答 . 3人已关注