DENSITY METRE-FLOW METRE FOR LIQUID AND GASEOUS MEDIA Russian patent published in 2009 - IPC G01N9/26 G01F1/34 

FIELD: instrument engineering; oil and gas industry.

SUBSTANCE: invention can be used in oil and gas extraction, oil processing, petrochemical and other industries. Density metre-flow metre includes loop-shaped pipe of equal section consisting of rising, horizontal and falling lines, 4 pressure samples installed correspondingly at the rising line (1^st pressure sampler), horizontal line (2^nd pressure sampler) and falling line (3^rd pressure sampler) of loop-shaped pipe and at thermometre casing of calibration liquid temperature sensor (4^th pressure sampler). The device also includes the 1^st and 2^nd pressure-difference transducers, absolute pressure sensor, working fluid temperature sensor, calibration liquid temperature sensor, pulse tubes with calibration liquid sensing pressure of working fluid and recording unit. The 1^st, 3^rd, 4^th pressure samplers and additional pressure sampler (5^th) installed at falling line of loop-shaped pipe are arranged at one level in loop lower end. The 2^nd pressure-difference transducer is connected to the 5^th and 1^st pressure sampler by means of pulse tubes. The 1^st pressure-difference transducer is connected to the 3^rd and 4^th pressure sampler. Thermometre is connected to the 2^nd pressure sampler. Liquid or gas density and flow rate is calculated from the specified expressions.

EFFECT: accuracy increase, extension of functional capabilities.

2 cl, 1 dwg