METHOD OF DETECTING DEPOSITS IN CAVITY OF LINEAR SECTION OF PIPE OF CONSTANT FLOW SECTION WHEN PUMPING OXYGEN-CONTAINING FLOW AND DEVICE THEREFOR Russian patent published in 2016 - IPC F17D3/00 

FIELD: pipes.

SUBSTANCE: method and device are intended for determining presence of deposits in cavity of linear section of pipe of constant flow section when pumping oxygen-containing flow. Method involves irradiating oxygen-containing stream. Creating a radioactive label in oxygen-containing flow with fast neutron radiation in pulsed mode. Detecting gamma-quanta. Analysing spectrum for presence of energy peak of gamma quanta with energy 6.13 ± 0.62 MeV from oxygen. Label transfer time is determined as difference of moments of beginning detection of gamma-quanta from oxygen label. Transfer time is measured on series-arranged equal-length parts of investigated pipe section. Presence of deposits at section corresponding to minimum transfer time of label is determined. Device includes pulsed fast neutron source 2, unit for detecting gamma-quanta 1, data analysis system 4 and power supply sources 3. Pulsed fast neutron source 2 is located outside pipe 6. Unit for detecting gamma-quanta 1 is located outside pipe 6 and is connected to data analysis system 4. Unit for detecting gamma-quanta 1, pulse fast neutron source 2 and data analysis system 4 are connected to power supply sources 3.

EFFECT: technical result is higher operating performances, specifically detection of points of deposits without stopping operation of pipe and without removal of insulation therefrom.

2 cl, 2 dwg