公开(公告)号：US20140260666A1

公开(公告)日：2014-09-18

申请号：US13800775

申请日：2013-03-13

Applicant: ROSEMOUNT INC.

Inventor： Christopher Jon Brand

IPC: G01F1/32

CPC classification number: G01F1/3218 ,  G01F1/32

Abstract: A flanged vortex flowmeter is connected to a flanged piping system that has a diameter larger than the diameter of the measurement section of the vortex flowmeter border. The vortex flowmeter has an inlet flange that reduces diameter from the inlet to the measurement section. A bluff body positioned in the measurement section produces vortices that alternate at a frequency proportional to the flow rate of fluid through the flowmeter. A length from inception of vortex shedding at the bluff body to a first expansion of the flow passage downstream of the bluff body is greater than a vortex wavelength of the vortices produced by the bluff body.

Abstract translation: 法兰式涡街流量计连接到法兰管道系统，其直径大于涡街流量计边界测量段的直径。 涡街流量计有一个入口法兰，可以减小从入口到测量部分的直径。 定位在测量部分中的非流线体产生涡流，其频率与通过流量计的流体的流速成比例。 在非流线体处的涡旋脱落开始的长度到非流线形体下游的流动通道的第一次膨胀的长度大于由非流线体产生的涡流的涡流波长。

公开(公告)号：US09016138B2

公开(公告)日：2015-04-28

申请号：US13800775

申请日：2013-03-13

Applicant: Rosemount Inc.

Inventor： Christopher Jon Brand

IPC: G01F1/32

CPC classification number: G01F1/3218 ,  G01F1/32

Abstract: A flanged vortex flowmeter is connected to a flanged piping system that has a diameter larger than the diameter of the measurement section of the vortex flowmeter border. The vortex flowmeter has an inlet flange that reduces diameter from the inlet to the measurement section. A bluff body positioned in the measurement section produces vortices that alternate at a frequency proportional to the flow rate of fluid through the flowmeter. A length from inception of vortex shedding at the bluff body to a first expansion of the flow passage downstream of the bluff body is greater than a vortex wavelength of the vortices produced by the bluff body.

Abstract translation: 法兰式涡街流量计连接到法兰管道系统，其直径大于涡街流量计边界测量段的直径。 涡街流量计有一个入口法兰，可以减小从入口到测量部分的直径。 定位在测量部分中的非流线体产生涡流，其频率与通过流量计的流体的流速成比例。 在非流线体处的涡旋脱落开始的长度到非流线形体下游的流动通道的第一次膨胀的长度大于由非流线体产生的涡流的涡流波长。