Frequency-conversion pressurizing control device of geothermal well

The utility model discloses a frequency-conversion pressurizing control device of a geothermal well. The frequency-conversion pressurizing control device comprises a submerged pump and a heat conveying pipeline, wherein one end of the heat conveying pipeline is connected with the submersed pump. The other end of the heat conveying pipeline is connected into a recharge well. A heat exchanger unit is arranged on the heat conveying pipeline and is formed by connecting multiple heat exchangers in series. The heat source inlet end of the heat exchanger unit is provided with a first pressure transmitter and a secondary pressurizing pump, and the heat source outlet end of the heat exchanger unit is provided with a secondary pressure transmitter. The frequency-conversion pressurizing control device further comprises a control module used for controlling the secondary pressurizing pump to work. The control module comprises a PLC unit and a frequency converter. The first pressure transmitter is electrically connected w