ISO 5167-2:2003 用压差装置测量管道循环交叉液体流量.第2部分：孔片

标准编号：ISO 5167-2:2003

中文名称：用压差装置测量管道循环交叉液体流量.第2部分：孔片

英文名称：Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full — Part 2: Orifice plates

发布日期：2003-03

标准范围

ISO 5167-2:20 03规定了孔板的几何形状和使用方法（安装和操作条件），当孔板插入到充满运行的导管中以确定在导管中流动的流体的流速时。它还提供了计算流速的背景信息，并与ISO 5167-1中给出的要求一起适用。ISO 5167-2:20 03适用于具有孔板的主装置，孔板与法兰压力攻丝、角部压力攻丝或D和D/2压力攻丝一起使用。其他压力攻丝，如收缩静脉和管道攻丝，已与孔板一起使用，但不包括在ISO 5167-2:20 03中。ISO 5167-2:20 03仅适用于在整个测量部分保持亚音速的流动，并且流体可以被认为是单相的。不适用于脉动流的测量。它不包括孔板在尺寸小于50毫米或大于1 000毫米的管道中的使用，或用于雷诺数低于5 000的管道。

ISO 5167-2:2003 specifies the geometry and method of use (installation and operating conditions) of orifice plates when they are inserted in a conduit running full to determine the flow-rate of the fluid flowing in the conduit.It also provides background information for calculating the flow-rate and is applicable in conjunction with the requirements given in ISO 5167-1.ISO 5167-2:2003 is applicable to primary devices having an orifice plate used with flange pressure tappings, or with corner pressure tappings, or with D and D/2 pressure tappings. Other pressure tappings such as vena contracta and pipe tappings have been used with orifice plates but are not covered by ISO 5167-2:2003.ISO 5167-2:2003 is applicable only to a flow which remains subsonic throughout the measuring section and where the fluid can be considered as single phase. It is not applicable to the measurement of pulsating flow. It does not cover the use of orifice plates in pipe sizes less than 50 mm or more than 1 000 mm, or for pipe Reynolds numbers below 5 000.

标准预览图