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车用压缩天然气（ＣＮＧ）加气站的加气过程具有变压、变流量的特点。通常的流量测量方法难以达到要求的准确性，若从国外进口质量流量计，其昂贵的价格又难以被用户接受；为此，四川石油管理局川中油气公司和中国测试技术研究院合作研制出了利用科里奥利原理的ＭＦＭ—１质量流量计。该流量计由传感器和变送器组成，直接测量ＣＮＧ的质量流量而不受其温度、压力、流量变化的影响。在四川省南充市和遂宁市ＣＮＧ加气站上使用，效果良好。经检测，其主要技术性能指标均达到设计要求，并通过了技术鉴定。ＭＦＭ—１质量流量计的研制成功，大大地降低了ＣＮＧ售气机的生产成本，非常有利于我国推广ＣＮＧ汽车技术。

THE DEVELOPMENT OF CORIOLIS FORCE QUALITY FLOWMETER AND ITS APPLICATION TO CNG GAGING

The gas entraining course of CNG gas entraining station is of the characteristics of change pressure and change flow.It is difficult for common flow gaging method to meet the requirement of high accuracy.If importing from overseas,the high price is hard to be received by users.So,the MFM 1 quality flowmeter by Coriolis principle is developed by Chuanzhong Oil Gas Company of Sichuan Petroleum Administration and China Test Technique Institute.Consisting of sensor and converter,the flowmeter can directly measure CNG quality flow without being influenced by temperature,pressure and flow change.A good utilization result is obtained at the CNG gas entraining stations in Nanchong and Suining.