METHOD FOR MONITORING PRESSURE AND MOISTURE CONTENT IN CAVITY OF DECOMMISSIONED PIPELINE AND DEVICE FOR ITS IMPLEMENTATION (OPTIONS) Russian patent published in 2021 - IPC G01D21/02 G01M3/30 

FIELD: pipeline transport.

SUBSTANCE: group of inventions relates to pipeline transport and can be used for the conservation of pipelines or other technological equipment of enclosed volume. The method includes the installation of an indicator cartridge filled with silica gel with the possibility of visual control of its indication. The indicator cartridge is installed on the pipeline with the provision of gas circulation between the pipeline and the cartridge. A manometer is connected to the indicator cartridge, the indicator cartridge is purged with gas from the pipeline. The value of the pressure in the pipeline is determined and when the results obtained deviate from the normalized value, a conclusion is made about the tightness failure of the pipeline. The change in the moisture content of the gas in the pipeline is determined by the change in the color of the indicator cartridge. The device for implementing the method according to the first embodiment includes connecting pipelines, connecting and shut-off valves, an indicator cartridge filled with silica gel, and a manometer. The indicator cartridge and the manometer are connected in series. A device for implementing the method according to the second version, which includes connecting pipelines, connecting and shut-off valves, a series-connected indicator cartridge filled with silica gel, and a pressure gauge, has a pipeline connected to the connecting pipelines providing a closed gas circulation loop between the pipeline and the indicator cartridge. The indicator cartridge is made of transparent material and equipped with a protective casing and mesh elements.

EFFECT: ease of implementation and increased efficiency of pipeline monitoring by obtaining more reliable data on the pressure and moisture content in the pipeline cavity, as well as by reducing gas and pressure losses when monitoring the tightness of a decommissioned pipeline.

3 cl, 4 dwg