METHOD FOR DETERMINATION OF THICKNESS OF DEPOSITS ON INNER SURFACE OF PIPELINE Russian patent published in 2019 - IPC G01B7/06 G01K13/00 G01K1/14 G01N25/20 

FIELD: measuring equipment.

SUBSTANCE: invention relates to measurement equipment used to control condition of pipelines, and is intended for determination of thickness of deposits on internal surface of pipelines, in particular, for determination of thickness of asphalt-resin-paraffin deposits in oil pipelines. According to the proposed method, the main annular heater is arranged on the pipeline coaxially with it, where several temperature sensors are arranged regularly along the circumference. Also, two additional annular heaters-thermal barrier are installed at equal distances on both sides of the main heater. Entire section of the pipeline between heat-barrier heaters is heat-insulated from the environment. Simultaneously, all heaters are switched on, then they are switched off, at that, temperature is registered continuously with the help of temperature sensors. Thickness is determined from parameters of obtained time diagrams.

EFFECT: reduced random error of thickness measurement of deposit layer and increased reliability of these measurements due to narrowing of measurement area along pipe length and redirection of heat flow from heater inside layer of deposits, as well as due to detailed measurement of thickness of deposit layer in pipe section of interest.

1 cl, 2 dwg