公开(公告)号：US5085077A

公开(公告)日：1992-02-04

申请号：US638393

申请日：1991-01-07

申请人： Charles E. Stapleton ,  Jerauld T. Numata

发明人： Charles E. Stapleton ,  Jerauld T. Numata

IPC分类号： G01F23/296

CPC分类号： G01F23/2962 ,  Y10S367/908

摘要： An ultrasonic liquid level detector mounted in a fill pipe cap. The ultrasonic detector mounted in a fill pipe cap (10) is used in determining a level and/or the volume of a liquid (5) stored in an underground storage tank (20). The fill pipe cap contains an ultrasonic ranging unit (50) that measures a time, T.sub.L, required for an ultrasonic pulse to travel round trip between an ultrasonic transducer/receiver (54) and the surface of the liquid in the tank. A reference reflector (25) disposed within a fill pipe (30) is used in determining a reference time, T.sub.R, that is included in a non-linear expression, e.sup..alpha. .multidot.T.sub.L.sup..beta..sbsp.1 .multidot.T.sub.R.sup..beta..sbsp.2, in order to compute the level of liquid in the storage tank. The terms e.sup..alpha., .beta..sub.1, and .beta..sub.2 comprise a correction for errors in the round-trip times T.sub.L and T.sub.R caused by a non-uniform vapor density of the liquid along the path traveled by the ultrasonic pulses.

摘要翻译： 安装在填充管帽中的超声波液位检测器。 安装在填充管帽（10）中的超声波检测器用于确定存储在地下储罐（20）中的液体（5）的水平和/或体积。 填充管帽包含超声波测距单元（50），其测量超声波脉冲在超声波换能器/接收器（54）与罐中的液体表面之间往返行进所需的时间（TL）。 设置在填充管（30）内的参考反射器（25）用于确定包括在非线性表达式e alpha xTLβ1xTRβ2中的参考时间TR，以便计算液体的液面 在储罐中。 术语eα1，β1和β2包括由沿着由超声波脉冲行进的路径的液体的不均匀蒸汽密度引起的往返时间TL和TR中的误差的校正。

公开(公告)号：US4308755A

公开(公告)日：1982-01-05

申请号：US51981

申请日：1979-06-25

申请人： Robert J. Millar ,  Charles E. Stapleton ,  John M. Hauf

发明人： Robert J. Millar ,  Charles E. Stapleton ,  John M. Hauf

IPC分类号： G01F1/115

CPC分类号： G01F1/115

摘要： A liquid volumetric flow measuring apparatus is disclosed wherein a turbine or vane, flow straighteners therefor, and a rotating shaft mounted therewith, and a magnetic sender are all mounted as an integral unit in a U-shaped pipe trap, and a volumetric calculator is mounted in conjunction therewith. By a specific mounting of the turbine in the trap there is a dampening action causing the calculator to cease recording the flow immediately upon this stopping of the motion of the liquid through the trap. This construction provides a guard against any air which is pumped through the pipe being recorded as liquid in contradistinction to a gaseous fluid. The magnetic sender has a reed switch and a magnet which are specifically mounted so as to provide low angular momentum and reliability, at both high and low flow rates. The present invention is particularly useful in fuel delivery, wherein the liquid volumetric flowmeter is mounted within the system of the party to whom the fuel is delivered, and permits the party to accurately record the liquid fuel actually delivered, and to guard against being charged for air flow from the fuel supplier's pump.

摘要翻译： 公开了一种液体体积流量测量装置，其中，涡轮机或叶片，其矫直机及其安装的旋转轴和磁性传感器都作为整体单元安装在U形管道捕集器中，并且体积计算器被安装 与此相关。 通过涡轮机在捕集器中的特定安装，存在阻尼作用，导致计算器在液体通过捕集器的运动停止时立即停止记录流动。 这种结构提供了防止任何通过管道被泵送的空气的防护装置，其被记录为与气体流体相反的液体。 磁性发送器具有专门安装的舌簧开关和磁体，以便在高流量和低流速下提供低角动量和可靠性。 本发明在燃料输送中特别有用，其中液体体积流量计安装在燃料被输送的一方的系统内，并允许该方准确地记录实际输送的液体燃料，并防止为 来自燃油供应商的泵的气流。