The invention belongs to the technical field of
blast furnace cooling, and particularly relates to a cooling
water supply system of a
blast furnace air supply device and a cooling method. One end of a hot
water recovery pool is connected with a filter pump through a pipeline, the filter pump is connected with a
fiber ball filter, and the
fiber ball filter is connected with the hot
water recovery pool through a pipeline; the other end of the hot water recycling
pool is connected with a lifting pump through a pipeline, the lifting pump is connected with a
cooling tower through a pipeline, the
cooling tower is connected with a cooling
water pool, and one end of the cooling
water pool is connected with a high-pressure water pump. The pipeline filters are connected with a
tuyere small sleeve of an air supply device, the
tuyere small sleeve of the air supply device is connected with a hot
water recovery pool through a pipeline, and an
accident emergency water supply mechanism is additionally arranged at the water inlet end of the
tuyere small sleeve of the air supply device. According to the
system, cooling water is provided by the
accident emergency water supply mechanism during double-path high-
voltage power loss and
diesel engine pump idling time, and the tuyere small sleeve is prevented from being burnt out and exploded through continuous water supply.