STEAM-TURBINE PLANT FOR GEOTHERMAL POWER STATION Russian patent published in 1998 - IPC

FIELD: generation of electric power on basis of thermal underground water. SUBSTANCE: steam-turbine plant for geothermal power station includes inter-well heat exchanger, turbine, generator, water-cooled condenser and geothermal circulating system which consists of inclined producing wells which diverge from sole of annular space of larger diameter which is used for forming the inter-well heat exchanger and is cased with respective string. Vertical injection well is located between inclined producing wells whose string is connected with string of increased diameter at sole of annular space by means of adapter. Outer string of larger diameter and string of injection well are connected on surface by means of pipe line which is provided with injection pump. Two strings of coaxial tubes for lowering the secondary heat-transfer agent into heating zone through central string and hoisting the superheated heat- transfer agent in inter-tube circular space are lowered inside string of injection well. EFFECT: enhanced efficiency. 1 dwg