Method of no-waste purging of gas purification units Russian patent published in 2021 - IPC F16L55/07 F17D1/04 

FIELD: gas industry.

SUBSTANCE: invention relates to the field of operation of gas distribution stations of gas trunk-lines (hereinafter-GDS), in particular, purging of gas purification units (hereinafter - GPU). The technical result is efficient use of the resource through natural gas conservation, which, instead of being released into the atmosphere, it is fed into the output pipeline of the GDS after additional purification. The technical result is achieved by the fact that the gas ejection unit is additionally mounted at the GDS. The ejection line with a small cleaning filter, pressure gauges and a valve is connected to the equalization pipeline after its valve. A line of active gas with valves is cut in after the output valves of the GPU up to the input valves of the pressure regulators. The output line with the output valve is connected to the equalizing pipeline between the place of its insertion into the output pipeline of the gas distribution station and the bypass valve of the ejection unit connected to the ejection line between the small purification filter and its valve. The high-pressure blown gas is bypassed from the GPU through the drainage pipeline to an enclosed condensate trap. Gas from the condensate trap is fed through the equalizing pipeline to the low-pressure GDS output pipeline. After reaching the pressure in the condensate collector equal to the pressure in the output pipeline of the GDS, and the gas remaining in the condensate collector is ejected into the output pipeline of the GDS.

EFFECT: efficient use of the resource through natural gas conservation, which, instead of being released into the atmosphere, is fed into the outlet pipeline of the GDS after additional purification.

1 cl, 1 dwg