公开(公告)号：US5151660A

公开(公告)日：1992-09-29

申请号：US577862

申请日：1990-09-05

申请人： Kelly R. Powers ,  Tony G. Curtis ,  Santosh Y. Limaye ,  Robert D. Roy

发明人： Kelly R. Powers ,  Tony G. Curtis ,  Santosh Y. Limaye ,  Robert D. Roy

IPC分类号： G01N27/22 ,  G01L9/00

CPC分类号： G01L9/0005

摘要： A ceramic bodied sensor having helical metallized electrodes for measuring the capacitance of an oil-water-gas or oil-water mixture flowing through a central bore of the sensor is disclosed. The sensor generally is a hollow cylinder with an inner ceramic layer which is very thin, a thicker outer ceramic layer which forms a strong structural unit, and a pair of isolated metallized electrodes which are generally approximately located between the inner and outer ceramic layers. The inner ceramic layer, outer ceramic layer and metallized electrodes form a dense monolithic ceramic tube. The electrode plates are preferably identical in size and shape and are isolated from one another electrically so that a condenser is formed by the separated plates. The inner ceramic layer is preferably very thin to minimize its capacitance value in comparison to the capacitance value of the water-oil-gas or oil-water mixture flowing through the central bore of the sensor. the sensor measures changes in the capacitance with changes in composition of the oil-water or oil-water-gas concentrations. Because the dielectric properties of oil and/or water and/or gas are considerably different, the relative composition of each fluid component can be mathematically modeled and thus measured.

摘要翻译： 公开了一种具有用于测量流过传感器的中心孔的油水 - 气体或油 - 水混合物的电容的螺旋金属化电极的陶瓷体传感器。 传感器通常是具有非常薄的内部陶瓷层的中空圆柱体，形成强结构单元的较厚的外部陶瓷层和通常大致位于内部和外部陶瓷层之间的一对隔离的金属化电极。 内陶瓷层，外陶瓷层和金属化电极形成致密的整体陶瓷管。 电极板的尺寸和形状优选相同，并且彼此分离，以便通过分离的板形成冷凝器。 与流过传感器的中心孔的水 - 油 - 气体或油 - 水混合物的电容值相比，内部陶瓷层优选非常薄，以使其电容值最小化。 传感器通过油水或油水 - 气体浓度的组成变化来测量电容的变化。 由于油和/或水和/或气体的介电性质明显不同，因此可以对每种流体组分的相对组成进行数学建模和测量。