METHOD OF GAS PUMPING FROM COMPRESSORS OF GAS TRANSFER UNITS AND SYSTEM FOR ITS IMPLEMENTATION Russian patent published in 2020 - IPC F17D1/02 F17D1/65 F04D25/02 F04F5/54 

FIELD: pipeline transportation of gas.

SUBSTANCE: group of inventions is intended for emptying pipeline sections during its repair, in particular, emptying sections containing gas transfer units (GTU) including during repair of latter, as well as for emptying of said sections at any planned shutdown of gas compressor unit, in which existing work technology provides for gas release from gas compressor to atmosphere. Besides, gas is excluded from switched off compressors into atmosphere. Essence of inventions consists in that system for pumping gas from compressors of gas transfer units of compressor shop of main pipeline includes inlet header, gas-pumping units with compressors, which input is connected to input header by means of inlet pipelines, outlet header, with which outputs of gas transfer units are connected by means of outlet pipelines, and ejector, which suction chamber is interconnected with deactivated sections of pipelines of stopped compressors of gas transfer units, equipped with stopcocks. At that, ejector has gas inlet and outlet with possibility of gas pumping from the disconnected pipeline section. According to the invention, the system is equipped with a single ejector, wherein the ejector input is communicated via the tap with the outlet header, and ejector output is interconnected through tap with inlet header with possibility of gas pumping from several disconnected sections simultaneously.

EFFECT: technical result is provision of uninterrupted operation of the main pipeline during repair works of one or several compressors compressor units of compressor shop and possibility of gas pumping from one or several gas compressor compressors simultaneously by one pumping device of ejector type.

2 cl, 1 dwg