Geothermal hole protection and groundwater circulation system

摘要

An apparatus for protecting geothermal hole and circulating subterranean water is provided to expose a pipe rarely above the ground, to eliminate heat loss, and to prevent physical impact from an outside by laying a subterranean water circulation line connecting a geothermal hole and a heat exchange unit under the ground by way of a subterranean water guiding unit. An apparatus for protecting geothermal hole and circulating subterranean water comprises the followings: a subterranean water pumping unit(10) including a geothermal hole(11) connecting to a subterranean water layer, a subterranean water suction pipe(13) inserted to the geothermal hole with a protection pipe unit(14) having larger diameter on a top, and an immersible motor pump(15) installed in the protection pipe unit, to pump the subterranean water through the subterranean water suction pipe; a geothermal hole protection pipe(20) covering an upper part of the geothermal hole, and connected to the geothermal hole exposing only the upper part above the ground; a subterranean water guiding unit(50) installed to the geothermal hole protection pipe, to support the immersible motor pump and the subterranean water suction pipe, to connect to a subterranean water circulation line(3), to discharge the subterranean water the immersible motor pump pumped, to a side wall of the geothermal hole protection pipe, and to lay the subterranean water circulation line under the ground.