天然气计算机流量测量系统  

Computer-aided Test System for Natural Gas Flow Rate

作　　者：李勇[1] 杨声将[1] 

机构地区：[1]中国石油西南油气田公司

出　　处：《石油规划设计》2006年第3期34-36,共3页Petroleum Planning & Engineering

摘　　要：在孔板节流式测量天然气流量时,在不同工作状况下,同精度、同量程的仪表测量的流量有不同的结果,提出了使用同一套流量测量装置时用同精度、不同量程的仪表录取状态参数的方法,由计算机或远程终端单元(RTU)或可编程逻辑控制器(PLC)采集数据,并自动选择最佳测量值参与流量计算,并提出了实现程序的逻辑图。The gas flow rate measured by the metering devices with the same precision and range is different under different working environment. A new method for recording the parameters of performance by a set of flow measuring devices with the same precision and different span was proposed. The data can be acquired by computer or remote terminal unit or programmable logic controller,and the flow rate can be calculated by optimum measured values automatically selected. The programmable logic chart to realize the computer program was presented in this paper.

关 键 词：流量测量 不确定度 仪表量程 远程终端单元 逻辑图 计算方法 分析 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术] TH814[自动化与计算机技术—计算机科学与技术]