External cooling device for turbine guide bearing of water turbine

The utility model discloses an external cooling device for a water turbine guide bearing. However, once the temperature of the bearing bush rises too high, potential production safety hazards can be buried, the service life of the water turbine can be shortened, and unnecessary economic losses are brought to enterprises. The device comprises a water turbine water guide bearing (1), two oil coolers (2) are fixed on an end cover of the water turbine water guide bearing, a water inlet of each oil cooler is communicated with a water inlet pipe (3), the two groups of water inlet pipes are communicated through a connecting hose (4), and the connecting hose is communicated to a main inlet pipe (5); a water outlet of each oil cooler is communicated with a water return pipe (10), the two groups of water return pipes are communicated through a connecting hose, and the connecting hose is communicated to a water outlet pipe (11). The external cooling device is used for external cooling of the turbine guide bearing of the