Air cooling compensation device for circulating water in shield tunneling machine

The utility model discloses an air-cooled compensation device for circulating water in a shield tunneling machine, which comprises a circulating water pump, a water inlet pipe, a water outlet pipe and a water outlet pipe, the heat dissipation fin assembly is in contact with the peripheral wall of the pump shell and is provided with fins arranged at intervals, and heat dissipation overflowing channels are formed between the fins; the center of the heat dissipation air duct is connected with a flow guide piece, a flow guide channel corresponding to the heat dissipation flow passing channel is formed, and the heat dissipation air duct is detachably connected with the pump shell; the fan is used for providing airflow for the flow guide channel. The fan is used for conducting auxiliary heat dissipation on internal circulating water, the heat dissipation fin assembly is arranged on the pump shell in a sleeved mode and makes contact with the peripheral wall of the pump shell, so that heat of the circulating water pu