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1. 发明授权

US06857845B2 System and method for detecting rotating stall in a centrifugal compressor 有权
标题翻译：用于检测离心压缩机中旋转失速的系统和方法
公开(公告)号：US06857845B2
公开(公告)日：2005-02-22
申请号：US10641277
申请日：2003-08-14
申请人： Robert Edward Stabley , Gregory Keith Beaverson , James Edwin Bender
发明人： Robert Edward Stabley , Gregory Keith Beaverson , James Edwin Bender
IPC分类号： F04D27/02 , F01D25/04
CPC分类号： F04D27/001 , F04D27/0253 , F04D29/464 , F05D2250/52 , Y10S415/914
摘要： A system and method is provided for detecting and controlling rotating stall in the diffuser region of a centrifugal compressor. The process begins with the detection or sensing of acoustic energy associated with the onset of rotating stall. A pressure transducer is placed in the gas flow path downstream of the impeller, preferably in the compressor discharge passage or the diffuser, to measure the sound or acoustic pressure phenomenon. Next, the signal from the pressure transducer is processed either using analog or digital techniques to determine the presence of rotating stall. Rotating stall is detected by comparing the detected energy amount, which detected energy amount is based on the measured acoustic pressure, with a predetermined threshold amount corresponding to the presence of rotating stall. Finally, an appropriate corrective action is taken to change the operation of the centrifugal compressor in response to the detection of rotating stall.
摘要翻译：提供一种用于检测和控制离心式压缩机的扩散器区域中的旋转失速的系统和方法。该过程开始于与旋转失速开始相关联的声能的检测或感测。压力传感器放置在叶轮下游的气体流路中，优选地位于压缩机排放通道或扩散器中，以测量声压或声压现象。接下来，使用模拟或数字技术处理来自压力传感器的信号，以确定旋转失速的存在。通过将检测到的能量量基于测量的声压与检测到的能量相对应于存在旋转档位的预定阈值进行比较来检测旋转失速。最后，采取适当的纠正措施来响应于旋转失速的检测来改变离心式压缩机的操作。

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