| 摘要 |
PROBLEM TO BE SOLVED: To provide a simple and inexpensive clogging detection system, easy in specifying a clogging place, superior in working efficiency, and easily usable even for an existing pipe passage. SOLUTION: A sensor A is arranged on the upstream side of a pipe curved part, and a sensor B is arranged on the downstream side, and a transfer function of reference data is compared with a transfer function of real time. While the transfer function of the reference data is 0.4, the transfer function of the real time is set to 0.1. Thus, a factor of damping pressure pulsation by checking propagation of the pressure pulsation, is estimated as existing between the sensor A and the sensor B. As a result, an operator can estimate that clogging is caused on the downstream side of the sensor A and the upstream side of the sensor B. COPYRIGHT: (C)2009,JPO&INPIT
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