Five-stage cascade in-situ geothermal power generation system

Abstract

The invention discloses a five-stage cascade in-situ geothermal power generation system. The system is composed of a water inlet section, a commutator, a water flow section, an in-well thermal photovoltaic power generation module, a heat transfer section, a top thermal photovoltaic power generation module and a turbine power generation module. The water inlet section is formed by connecting a plurality of water inlet pipes; the commutator introduces recharge water between an outer pipe and an inner pipe of the water flow section into the water inlet section and then into the underground; a well submersible pump of the water flow section is arranged in the middle of the inner pipe of the water flow section; and a phase change type thermal photovoltaic power generation basic module and a pipe wall type thermal photovoltaic power generation basic module are arranged in the in-well thermal photovoltaic power generation module. The heat transfer section is provided with a magnetic levitation power generation section. The top and the bottom end of the top thermal photovoltaic power generation module are screwed with a connecting pipe of the heat transfer section. The turbine power generation module adopts an organic Rankine generator (ORC). Deep land in-situ geothermal power generation meeting the construction requirement is achieved; in the in-situ geothermal power generation process, geothermal water is recharged in situ; five-stage cascade geothermal power generation of magnetic levitation, turbines, pipe walls, phase change thermovoltaics and top thermovoltaics is achieved; and the heat energy is utilized at the maximum efficiency.

Description

[0001] 1. Technical field [0002] The invention relates to the field of geothermal power generation, in particular to a five-stage cascaded in-situ geothermal power generation system. [0003] 2. Background technology [0004] Geothermal is a new type of clean energy, widely distributed and rich in reserves. Using geothermal energy for power generation and heat extraction produces little pollution and renewable energy, and the unit cost of power generation and heat extraction is low. Therefore, geothermal power generation and heat extraction are receiving more and more attention and utilization. Application number CN202010112988.6 "An In-Situ Geothermal Power Generation System" provides an in-situ geothermal power generation system, including heat pipes, thermoelectric thermoelectric power generation devices and magnetic levitation power generation devices. The heat pipe is directly buried deep in the ground, and the heat pipe is located at the geothermal source. On the one ...

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Problems solved by technology

[0005] (1) The construction requirements of deep geothermal wells are not considered; (2) Geothermal water recharge is not considered

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