液态烃原级标准装置及量传溯源技术

Liquid Hydrocarbon Primary Standard Device and Quantity Traceability Technology

为了实现液态烃流量从现场流量计到国家质量、容量基标准的完整溯源链,采用"质量+容积"法的组合系统构成的闭式循环系统油流量标准装置.该装置可以实现原油、成品油流量计的实液检定、校准,并吸纳了国外同类型液态烃流量标准装置的优点,比选采用三种不同黏度的白油作介质,研发高黏度液体换向器、稳定测控单元、流量测控单元、质量密度测量单元等关键技术和功能模块作为技术支撑,通过环道系统构成闭环流量计检定系统,保证了液态烃流量量值的准确与统一.

In order to realize the whole traceability chain of liquid hydrocarbon from the field flow me- ter to national mass,capacity standard and to ensure the value of liquid hydrocarbon flow is accurate and unified,the closed circulation system oil flow standard device composed of mass and volume method combination system is adopted. The device can achieve the true liquid verification and calibration of crude oil and refined product flow meter,and it has absorbed the advantages of the same kind of liquid hydrocarbon flow standard device abroad. Comparing and selecting three kinds of white oil with different viscosity as the medium,the high viscosity liquid commutator,stability measure and control unit,flow measure and control unit,mass and density measurement unit and other key techniques and functional modules are developed for technical supporting. Through the ring system,the closed loop flow meter calibration system is established,which ensures the accuracy and unity of liquid hydrocarbon flow value.