HEATED TRANSPORT PIPELINE Russian patent published in 2015 - IPC F17D1/18 F16L53/00 F24J3/08 

FIELD: transport.

SUBSTANCE: collector with heat-transfer medium bears against outer surface of heated pipeline. Geothermal heat pump is used as heat source for heat-transfer medium. The heat pump contains connecting pipelines, throttles, steam generator, evaporator, three ejectors connected in series, three condensers where the third condenser has heating pipe, three circulating pumps, heat accumulator with collector. Each ejector consists of inlet chamber, nozzle and diffusor. Heat accumulator collector is connected with steam generator via the first circulating pump. Steam from generator is supplied through throttles to nozzles of the first, the second and the third ejectors. Inlet chamber of the first ejector is connected with evaporator outlet via connecting pipeline. The inlet chamber of the second ejector is connected with diffuser of the first ejector via the second circulating pump. The inlet chamber of the third ejector is connected with diffuser of the second ejector via the third circulating pump and the second condenser. Outlets of condensers are connected with evaporator inlet. Ejector exiting steam enters the third condenser and heats heating pipe connected with collector on heating pipeline.

EFFECT: higher pumping efficiency.

1 dwg