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首页> 外文期刊>Experimental Thermal and Fluid Science: International Journal of Experimental Heat Transfer, Thermodynamics, and Fluid Mechanics >Measurement of two-phase mixture level using an ultrasonic method
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Measurement of two-phase mixture level using an ultrasonic method

机译：使用超声波方法测量两相混合物液位

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摘要

An ultrasonic method is developed for the measurement of a two-phase mixture level. The proposed approach can be used as a level measurement method in a reactor vessel or steam generator. A commercial ultrasonic method is used and modified for application under conditions such as high temperature and pressure, as well as severe surface fluctuation. The modifications are as follows: (1) The calculation method of the ultrasonic velocity is modified such that it can be predicted correctly under high temperature and pressure conditions considering the medium as a homogeneous mixture of air and steam; and (2) a waveguide is developed to reduce the loss of echo by the effects of attenuation and by the diffused reflection from the fluctuated surface of the water level. Finally, the developed method is verified under high temperature (211 degrees C) and pressure (1.95 MPa) conditions. It is concluded that the developed ultrasonic method measures the two-phase mixture level more accurately than the conventional methods at high temperature and pressure conditions as well as under conditions of surface fluctuation. (c) 2004 Elsevier Inc. All rights reserved.
机译：开发了用于测量两相混合物液位的超声方法。所提出的方法可以用作反应堆容器或蒸汽发生器中的液位测量方法。使用并改进了商业超声方法，以在高温和高压以及严重的表面波动等条件下使用。修改如下：（1）修改超声速度的计算方法，使得可以在高温高压条件下将介质视为空气和蒸汽的均匀混合物来正确预测超声速度; （2）开发了一种波导，以通过衰减效应和水位波动表面的漫反射来减少回波的损失。最后，在高温（211摄氏度）和压力（1.95 MPa）条件下验证了该开发方法。结论是，在高温和高压条件下以及在表面起伏情况下，所开发的超声方法比常规方法测量两相混合物液位更准确。 （c）2004 Elsevier Inc.保留所有权利。

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