Bullet train water supply device

The utility model relates to a bullet train water supply device. The device comprises a flange adapter, a floating joint assembly, an outer door opening assembly and an inner door opening assembly, the floating connector assembly, the outer door opening assembly and the inner door opening assembly are connected with the flange adapter respectively, the outer door opening assembly opens an outer door of the bullet train water tank, the inner door opening assembly opens an inner door of the bullet train water tank if the inner door exists in the bullet train water tank, and the floating connector assembly is in butt joint with a water inlet of the bullet train water tank so as to conduct water supply operation. According to the utility model, the outer door opening assembly is arranged; an outer door of the water tank is opened; opening assembly provided with inner door, water tank inner door, floating adjustment structure, when the water pipe connector is not aligned with the water tankwater injection port, th