Double-pipe heat exchanger for medium-deep geothermal well

The utility model discloses a double-pipe heat exchanger for a medium-deep geothermal well, and belongs to the technical field of double-pipe heat exchangers. Comprising a sleeve, an inner pipe, a plurality of shunting pipes and a shunting plate, the inner pipe is sleeved with the sleeve. The splitter plate is arranged in the sleeve, and the inner pipe penetrates through the splitter plate; the shunting pipe is of a spiral structure, one end of the shunting pipe is communicated with the inner pipe, and the other end of the shunting pipe is communicated with the shunting plate; a heat exchange cavity is formed by the splitter plate and the sleeve, a high-heat-conduction object is contained in the heat exchange cavity, and high-heat-conduction silicone grease is added into the heat exchange cavity through the spiral structure of the splitter pipe and the heat exchange cavity, so that the stroke of a solution in the heat exchange cavity can be increased, the heat exchange time is prolonged, heat exchange of the