公开(公告)号：US3908380A

公开(公告)日：1975-09-30

申请号：US48833174

申请日：1974-07-15

Applicant: SPERRY RAND CORP

Inventor： LOBACH JAMES L

IPC: F01D25/16 ,  F03G4/04 ,  F03G4/06 ,  F03G7/04 ,  F03G7/00 ,  F01K23/00

CPC classification number: F01D25/16 ,  Y02E10/10

Abstract: A geothermal energy transfer and utilization system makes use of thermal energy stored in hot solute-bearing well water to generate super-heated steam from an injected flow of clean water; the super-heated steam is then used for operating a novel turbine for driving a hot water pump at the well bottom for pumping the hot solute-bearing water at high pressure and in liquid state to the earth''s surface, where transfer of its heat content to a closed-loop boiler-turbine-alternator combination is effected for the generation of electrical or other power. Clean water is regenerated by surface-located equipment for re-injection into the deep well and the residual concentrated solute-bearing water is pumped back into the earth. The novel pump driving turbine features a compact and efficient steam turbine configuration adapted for use in the hostile environment of the deep hot-water well. Super-heated steam passes downwardly to impact turbine blades at the periphery of the turbine wheel. A further feature permits the expanding steam then to reverse its sense of flow in a compact arrangement returning the steam along the axis of the turbine wheel and then to the earth''s surface for further energy recovery.

公开(公告)号：US3905196A

公开(公告)日：1975-09-16

申请号：US48833374

申请日：1974-07-15

Applicant: SPERRY RAND CORP

Inventor： GOVINDARAJAN RANGACHARI ,  LOBACH JAMES L ,  NICHOLS KENNETH E

IPC: F01K3/18 ,  F03G4/04 ,  F03G4/06 ,  F03G7/04 ,  F03G7/00 ,  F01K23/00

CPC classification number: F01K3/18 ,  Y02E10/10

Abstract: A geothermal energy transfer and utilization system makes use of thermal energy stored in hot solute-bearing well water to generate super-heated steam from an injected flow of clean water; the super-heated steam is then used for operation of a turbinedriven pump at the well bottom for pumping the hot solute-bearing water at high pressure and in liquid state to the earth''s surface. There, it is used by transfer of its heat content to a closed-loop boiler-turbine-alternator combination for the generation of electrical or other power. Cooled, clean water is regenerated by the surface-located system for re-injection into the deep well and the residual concentrated solute-bearing water is pumped back into the earth. Significant axial thrust is developed in the support bearing system of the steam turbine driven hot water pump because of the considerable pressure head rise generated by the hot water pump, the axial thrust being proportional to the hot water pump discharge pressure. According to the invention, a balancing thrust is developed that is also proportional to pump discharge pressure, so that the net thrust is minimized over a range of speed and hot water flow conditions.

Abstract translation: 地热能转移利用系统利用储存在热溶质井水中的热能，从注入的清水流中产生超热蒸汽; 然后将超热蒸汽用于在井底处的涡轮驱动泵的操作，以将处于高压和液态的热溶质负载水泵送到地球表面。 在那里，通过将其热含量转移到用于产生电力或其他动力的闭环锅炉 - 涡轮机 - 交流发电机组合来使用。 冷却的清洁水由位于表面的系统再生，用于再次注入深井，剩余的浓缩的含有溶质的水被泵送回地球。 由于热水泵产生的相当大的压力头上升，轴向推力与热水泵排出压力成正比，在汽轮机驱动热水泵的支承轴承系统中产生显着的轴向推力。 根据本发明，开发了一个平衡推力，该平衡推力也与泵排出压力成比例，使得在一定范围的速度和热水流动条件下，净推力被最小化。