GAS SUPPLY SYSTEM Russian patent published in 1997 - IPC

FIELD: gas supply systems; drive of supercharger of compressor gas transfer station. SUBSTANCE: system contains high-, medium- and low-pressure natural gas pipe lines and gas transfer unit including natural gas supercharger, drive engine with exhaust line and turboexpander which are linked kinematically. Inner branch pipes of supercharger and turboexpander are connected to medium-pressure pipe line, outlet branch pipe of supercharger is connected to high-pressure pipe line and outlet branch pipe of turboexpander is connected to low-pressure pipe line. Innovation of invention consists in providing the system with additional heat exchanger which is fitted in medium-pressure pipe line between points of connection of supercharger and turboexpander in way of flow of medium-pressure gas; its outlet is connected with exhaust line of drive engine by heating medium and outlet is brought in communication with atmosphere. EFFECT: enhanced reliability. 1 dwg