发明名称 |
método de detecção e localização de um vazamento de fluido relacionado a uma máquina de pistão |
摘要 |
A method for detecting and localizing a valve leak in a piston machine having a shaft includes: attaching one or more vibration sensor to a valve block of the piston machine; measuring the vibrations from at least one of the vibration sensors; attaching a sensor to the piston machine where the sensor is designed to produce, directly or indirectly, an angular shaft position signal for the shaft; determining, directly or indirectly, an angular shaft position signal for the shaft; transforming vibration signals from the one or more vibration sensors into one envelope signal representing an instant vibration level; using the angular position signal for constructing window functions that pick the envelope signal in selected angular shaft sectors; using the window functions to find sector based averages of the vibration level; and comparing said averages with a critical ambient vibration level to detect and localize leaks in one or two valves. |
申请公布号 |
BR112013012487(A2) |
申请公布日期 |
2016.09.06 |
申请号 |
BR20131112487 |
申请日期 |
2011.11.18 |
申请人 |
NATIONAL OILWELL VARCO NORWAY AS |
发明人 |
AGE KYLLINGSTAD;PAL JAKOB NESSJØEN |
分类号 |
F04B51/00;G01H1/00;G01M3/24 |
主分类号 |
F04B51/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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