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1. 发明公开

EP1739396A1 Turbine flow meter for measuring flow velocity and direction 有权
标题翻译： Turbinendurch Flussmesser zur Messung derStrömungsgeschwindigkeitundStrömungsrichtung
公开(公告)号：EP1739396A1
公开(公告)日：2007-01-03
申请号：EP05291509.7
申请日：2005-06-29
申请人： SERVICES PETROLIERS SCHLUMBERGER , SCHLUMBERGER TECHNOLOGY B.V. , SCHLUMBERGER HOLDINGS LIMITED , PRAD Research and Development N.V. , Schlumberger Oilfield Assistance Limited
发明人： Wu, Xu , Kalb, Frederique , Chouzenoux, Christian
IPC分类号： G01F1/10
CPC分类号： G01F1/103 , G01P3/486 , G01P5/07 , G01P13/04
摘要： A device 1 for measuring a fluid flow FF velocity and direction comprises :
- a pivotable means 2 adapted to rotate at a pivotable means rotation velocity and direction depending on the fluid flow velocity and direction when in contact with the fluid flow,
- a modulator 3 coupled to the pivotable means and adapted to rotate in conjunction with the pivotable means,
- a fiber optical arrangement for providing an incident beam IB to the modulator and for receiving a return beam RB from the modulator,
- the incident beam IB comprising an incident signal, the return beam RB comprising a modulated signal, the modulator 3 modulating the incident signal so as to form the modulated signal depending on the pivotable means 2 rotation velocity and direction.
The modulator 3 comprises an encoder 30 comprising at least a first angular sector 34, a second angular sector 35 and a third angular sector 36, each angular sector having a determined attenuation coefficient so that the modulated signal comprises at least a first portion 64, a second portion 65 and a third portion 66 for each complete rotation of the encoder 30. The device 1 further comprises a processing means 6 for determining the fluid flow FF velocity and direction based on at least the first portion 64, the second portion 65 and the third portion 66 of the modulated signal.
摘要翻译：用于测量流体流FF速度和方向的装置1包括： - 可枢转装置2，其适于在与流体流动接触时根据流体流动速度和方向以可枢转的装置旋转速度和方向旋转;调制器3 耦合到所述可枢转装置并且适于与所述可枢转装置一起旋转; - 光纤布置，用于向所述调制器提供入射光束1B并用于从所述调制器接收返回光束RB，所述入射光束IB包括入射信号，返回光束RB包括调制信号，调制器3调制入射信号，以便根据可枢转装置2的旋转速度和方向形成调制信号。调制器3包括编码器30，其包括至少第一角扇区34，第二角扇区35和第三角扇区36，每个角扇区具有确定的衰减系数，使得调制信号至少包括第一部分64，第二部分65和第三部分66，用于编码器30的每次完全旋转。装置1还包括处理装置6，用于基于至少第一部分64，第二部分65和第二部分65确定流体流FF速度和方向调制信号的第三部分66。

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