炼油厂有很多加热装置,蒸汽是多而普遍的热源,虽然测量蒸汽的仪表种类繁多,但随着装置效率和自动化的提高,对蒸汽流量计的准确度要求更高。针对孔板流量计,结合多年在现场流量计的应用经验,提出以下几点提高蒸汽流量计准确度的措施:1.标准节流装置必须按照SY/T6143—2004的标准规定的制造与安装;2.采用可换孔板装置与定值节流装置;3.采用合理的流量积算方案。通过实施以上措施可持续保持蒸汽流量计的准确度。 Refineries have many heating devices and steam is a multi-source and common source of heat. Although a wide variety of instruments measure steam, the accuracy of the steam meter is even more demanding as device efficiency and automation increase. For the orifice flowmeter, combined with years of experience in the field of flowmeter applications, the following points to improve the accuracy of the steam flowmeter measures: 1. Standard throttling device must be in accordance with the provisions of SY / T6143-2004 standard manufacturing and installation; 2. The use of perforated plate device and the value of throttling device; 3. The use of a reasonable flow plan. By implementing the above measures, the accuracy of the steam flow meter can be maintained continuously.