METHOD OF DETERMINING PHASE OF GAS-LIQUID STREAM AND APPARATUS FOR REALISING SAID METHOD Russian patent published in 2012 - IPC G01N27/18 

FIELD: physics.

SUBSTANCE: method of determining the phase of a gas-liquid stream involves determination of the distribution of characteristics of the gas-liquid stream in the cross-section of a pipeline by installing into the pipeline a sensor with a detecting element(s) connected to a measuring device, measuring the change in sensor parameters and transmitting a data signal on the change in sensor parameters. Analysis of flow parameters is carried out using a phase sensor with a thermistor detecting element(s), having a "point" design. The state of the detecting elements is polled. Change in resistance of the thermistors, which is associated with phase change of the medium in horizontal layers of the gas-liquid stream is determined at control points on the vertical axis of the cross-section of the pipeline. The signal is processed and information on the state of the stream is transmitted. If there are several detecting elements, they are connected to the measuring device independently of each other on parallel circuits and their state is polled periodically. The invention also discloses an apparatus for realising the method.

EFFECT: high accuracy of determining the phase of a gas-liquid stream, high reliability and simple design of the apparatus.

3 cl, 4 dwg