在线测量原油密度计特性  

Characteristics of On-line Crude Oil Densimeter

作　　者：王志学 

机构地区：[1]大庆输油公司

出　　处：《油气储运》1996年第8期37-39,共3页Oil & Gas Storage and Transportation

摘　　要：在使用流量计结合在线密度计进行原油计量交接过程中,原油质量等于原油体积与密度及联合修正系数的乘积。对体积的测量采用流量计,而对密度的测量采用在线密度计。介绍了NMZ—10型振动式双管密度计的测量原理,其测量精度与被测介质及周围环境温度、液体压力、介质流量及粘度有关。根据双管密度计的特性,进行相应的系数修正,可使测量极限误差不大于±0.001g/cm^3。When measuring crude oil using flow meter plus on -line densimeter, the mass of crude oil shall equal to the product of its volume, density and a conbined correction factor. Volume of the crude oil is measured by a flow meter, and density by a on -line densimeter. Introduced in this paper is the measurement principle of NMZ dual string densimeter of vibration type, the precision of which is influenced by the medium measured, ambient temperature, liquid pressure, flow rate as well as liquid viscosity. Proper correction of the factor based on the knowledge on the characteristics of densimeter can achieve a limited measuring error as low as± 0. 001 g/cm3

关 键 词：原油 密度 测量 密度计 油气计量 

分 类 号：TE863.1[石油与天然气工程—油气储运工程]