国家蒸汽流量站标准装置的研究.doc

国家蒸汽流量站标准装置的研究

摘要:蒸汽是一种重要的能源,在简要介绍蒸汽流量计量的现状,国家蒸汽流量站建立的基本情况、作用及意义的基础上,详细分析了国家蒸汽流量站新建冷凝称重法蒸汽流量标准装置,该装置采用冷凝称重法,对蒸汽流量仪表实流标定,区别于气体流量标准装置,该方法溯源性好、准确可靠的。国家蒸汽流量站的建立对于深入开展蒸汽流量能源的计量具有重要的意义。
关键词:计量学;蒸汽流量;冷凝称重法;标准装置;能源计量
中图分类号:TB937 文献标识码:A 文章编号:
Research on Standard Equipment of National Steam Flowrate Station

Abstract: Steam is an important energy resource, briefly introduced the current situation of steam measurement and the base situation ,fuction,significance of national steam flowrate station , detailed analysis the standard equipment for steam flow measurement ,which was built by national steam flowrate station recently , the equipment was developed on the basic principle of condensing weighing method to calibrate steam flowmeters, compare to air standard equipment,condensation weighing method is a good traceability, high accuracy steam flow measurement standard equipment. The establishment of national steam flowrate steam station would produce great significance for the relevant research projects of steam flowrate measuring
Key words: Metrology;Steam flowrate;Method of weighing after condensation; Standard equipment;Energy measurenmet
1蒸汽流量计量现状
蒸汽是一种重要的二次能源,主要是利用其所载之热能或其做功能力产生能量,由于其清洁环保、能效高等特点,被广泛应用于工业生产和人民的日常生活中。它的准确计量对当前起着关键的作用。据不完全统计,我国每年产蒸汽20亿吨(不含电厂发电用汽),产值达4000多亿元。在生产、生活能源中占较大的比例。
蒸汽由于其复杂、独特的物理特性使其成为流量计量中一个难于解决的问题。蒸汽根据状态不同可分为过热蒸汽、饱和蒸汽和湿蒸汽三种状态