公开(公告)号：US5739429A

公开(公告)日：1998-04-14

申请号：US639402

申请日：1996-04-29

Applicant: James W. Schmitkons ,  Richard P. Price ,  John R. Askew ,  Jan L. Shanaberger

Inventor： James W. Schmitkons ,  Richard P. Price ,  John R. Askew ,  Jan L. Shanaberger

IPC: G01F1/00 ,  B05B7/14 ,  B05B7/24 ,  B05B12/08 ,  G01F1/74

CPC classification number: B05B7/1454 ,  B05B12/085 ,  B05B7/14

Abstract: A system for monitoring the flow rate of particulate material entrained within an air stream includes a feed hopper providng a source of the particulate material, and a hose for conveying the particulate material within the air stream. A pump draws the particulate material from the feed hopper and transports the particulate material with the air stream through the hose. A flow meter is associated with the hose and measures the mass flow rate of the particulate material through the hose to provide a first flow indication. A device is associated with the feed hopper and measures the change in weight of the feed hopper over a predetermined interval to provide a second flow indication. A controller corrects the first flow indication from the flow meter according to the second flow indication from the gravimetric device. The flow measurement system provides an accurate and fast responding flow meter by combining the advantages of a fast responding in-line flow meter with the accuracy of a weight measurement system.

Abstract translation: 用于监测夹带在空气流中的颗粒物质的流速的系统包括提供颗粒材料源的进料斗和用于在气流内输送颗粒材料的软管。 泵从进料斗中抽出颗粒材料，并将颗粒物质与空气流一起输送通过软管。 流量计与软管相关联并且测量通过软管的颗粒材料的质量流率以提供第一流量指示。 设备与进料斗相关联并且在预定间隔内测量进料斗的重量变化以提供第二流量指示。 控制器根据来自重量分析装置的第二流量指示从流量计校正第一流量指示。 流量测量系统通过将快速响应的在线流量计的优点与重量测量系统的精度相结合，提供了一种精确而快速的响应流量计。