METHOD FOR DETERMINING VOLUME AND MASS GAS/STEAM CONTENT OF MOVING TWO-PHASE FLOW IN PIPELINE Russian patent published in 2025 - IPC G01N7/00 

FIELD: measuring.

SUBSTANCE: invention relates to method of determining volume and mass gas/steam content of moving two-phase flow in pipeline, in which on measuring horizontal cylindrical section of pipeline with inner diameter d_in, length L, coefficient of hydraulic friction λ_cm, volume flow rate Q, temperature T and pressure P are measured in the inlet section, the pressure drop Δp_fr.cm by means of a device in the form of interconnected piezometers in a two-phase flow between the inlet and outlet sections and volumetric φ or mass k gas/steam content in section at inlet of measuring section is determined by relationship:

,

where Δp_fr is friction pressure drop, determined for single-phase flow with mass flow rate G=G', Δp_fr.cm is the friction pressure drop, determined for the two-phase flow with mass flow rate G_cm=G'+G'', ρ' is density of liquid phase, ρ'' is density of gas/steam phase, β is the two-phase flow losses dimensionless characteristic, reduced to the single-phase flow similar in speed losses, which depends only on the gas mass content k:

EFFECT: possibility of determining gas/steam content in a two-phase medium without sampling and using expensive equipment.

1 cl, 3 dwg