ISO 5167-6:2022 用安装在圆形截面管道中的差压装置测量满管流体流量 第6部分：楔形流量计
标准编号：ISO 5167-6:2022
中文名称：用安装在圆形截面管道中的差压装置测量满管流体流量 第6部分：楔形流量计
英文名称：Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full — Part 6: Wedge meters
发布日期：2022-10
标准范围
本文件规定了楔形流量计的几何形状和使用方法（安装和操作条件），当楔形流量计插入充满的管道中以确定管道中流动的流体的流速时。笔记？1？由于未校准的楔形流量计的不确定度对于特定应用来说可能太大，因此根据条款？7.本文件给出了校准要求，如果适用，则在校准的雷诺数范围内使用。条款？7也可能是校准类似设计但不在本文件范围内的仪表的有用指南。它还提供了计算流速的背景信息，并与ISO？中给出的要求一起适用。5167？1.本文件仅适用于在整个测量部分流动保持亚音速且流体可被视为单相的楔形流量计。未经校准的楔形仪表只能在管道尺寸、粗糙度、β（或楔形比）和雷诺数的规定范围内使用。不适用于脉动流的测量。它不包括在内径小于50？mm还是600多？嗯，或者管道雷诺数低于1的地方？×？104.笔记？2？楔形仪表具有由特定几何形状的楔形限制组成的主要元件。楔形仪表的替代设计是可用的；然而，在撰写本文时，没有足够的数据来充分表征这些设备，因此这些仪表根据条款？7.
This document specifies the geometry and method of use (installation and operating conditions) of wedge meters when they are inserted in a conduit running full to determine the flow rate of the fluid flowing in the conduit.NOTE 1 As the uncertainty of an uncalibrated wedge meter can be too large for a particular application, it could be deemed essential to calibrate the flow meter according to Clause 7.This document gives requirements for calibration which, if applied, are for use over the calibrated Reynolds number range. Clause 7 could also be useful guidance for calibration of meters of similar design but which fall outside the scope of this document.It 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 wedge meters in which the flow remains subsonic throughout the measuring section and where the fluid can be considered as single-phase. Uncalibrated wedge meters can only be used within specified limits of pipe size, roughness, β (or wedge ratio) and Reynolds number. It is not applicable to the measurement of pulsating flow. It does not cover the use of uncalibrated wedge meters in pipes whose internal diameter is less than 50 mm or more than 600 mm, or where the pipe Reynolds numbers are below 1 × 104.NOTE 2 A wedge meter has a primary element which consists of a wedge-shaped restriction of a specific geometry. Alternative designs of wedge meters are available; however, at the time of writing there is insufficient data to fully characterize these devices, and therefore these meters are calibrated in accordance with Clause 7.
标准预览图
