天然气能量计量误差影响因素分析  

Analysis of Factors Affecting the Error of Natural Gas Energy Measurement

作　　者：刘琦 孙冲 徐赫男 LIU Qi;SUN Chong;XU He-nan(Guangzhou Institute of Technology,Guangzhou 510725,China;SINOPEC Petroleum Eng.Design Zhongyuan Corporation,Zhengzhou 450000,China;PipeChina Southwest Pipeline Company,Dehong 678400,China)

机构地区：[1]广州工程技术职业学院,广东广州510725 [2]中石化中原石油工程设计有限公司,河南郑州450000 [3]国家管网集团西南油气管道有限责任公司,云南德宏678400

出　　处：《化工管理》2021年第34期27-28,49,共3页Chemical Engineering Management

基　　金：广东省教育厅2019年广东省普通高校青年创新人才项目(自然科学):天然气能量计量关键技术及运行管理模式探究(2019GKQNCX084)。

摘　　要：天然气能量计量能够真实地反映出其使用价值,目前正在积极推广。文章分别从体积计量和发热量测定(间接法)两个角度分析了实施天然气能量计量时产生误差的主要影响因素。其中体积计量针对时差式超声波流量计,分别讨论了管道结垢、流体流态、噪声、气体脏污状态和气质组分5种因素对测量精确度的影响;发热量测定过程针对间接法,分别讨论了水蒸气含量和天然气取样过程2种因素对测量精确度的影响。Natural gas energy measurement can truly reflect its use value,and it is being actively promoted.This paper analyzes the main influencing factors of errors in the implementation of natural gas energy measurement from two aspects of volume measurement and calorific value measurement(indirect method).For the time difference ultrasonic flowmeter,the influence of five factors on the measurement accuracy,such as pipe scaling,fluid flow state,noise,gas fouling state and gas composition,are discussed.For the measurement process of calorific value,taking indirect method as an example,the influence of water vapor content and natural gas sampling process on the measurement accuracy is discussed.

关 键 词：天然气 能量计量 体积计量 发热量测定 

分 类 号：TE81[石油与天然气工程—油气储运工程]