ISO 5167-4:2022 用压差装置测量管道循环交叉液体流量 第4部分：文氏管道

标准编号：ISO 5167-4:2022

中文名称：用压差装置测量管道循环交叉液体流量 第4部分：文氏管道

英文名称：Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full — Part 4: Venturi tubes

发布日期：2022-06

标准范围

This document specifies the geometry and method of use (installation and operating conditions) of 1) Venturi tubes when they are inserted in a conduit running full to determine the flow rate of the fluid flowing in the conduit.
This document also provides background information for calculating the flow rate and is applicable in conjunction with the requirements given in ISO 5167-1.
This document is applicable only to Venturi tubes in which the flow remains subsonic throughout the measuring section and where the fluid can be considered as single-phase. In addition, Venturi tubes can only be used uncalibrated in accordance with this standard within specified limits of pipe size, roughness, diameter ratio and Reynolds number, or alternatively they can be used across their calibrated range. This document is not applicable to the measurement of pulsating flow. It does not cover the use of uncalibrated Venturi tubes in pipes sized less than 50 mm or more than 1 200 mm, or 5 where the pipe Reynolds numbers are below 2 × 10⁵ .

标准预览图