Water distribution system for cooling tower, cooling tower and water distribution method for cooling tower

The invention discloses a water distribution system for a cooling tower, the cooling tower and a water distribution method for the cooling tower. The water distribution system for the cooling tower comprises at least one water supply pipe, wherein one end of each water supply pipe is communicated with a central shaft of the cooling tower; a plurality of spraying devices are arranged on each water supply pipe, the elevation of nozzles of the spraying devices is gradually decreased from inside to outside with the central shaft serving as the center, and the nozzles of the spraying devices are upward. According to the water distribution system for the cooling tower, the spraying devices are conically arranged in space, the head pressure is realized by the aid of the pressure difference formed by the height difference and the water flow velocity, and the non-uniformity of cooling tower water distribution is realized and matched with the non-uniform distribution of the flow velocity of air in the cooling tower; the spraying devices spray water upwards, surplus pressure of a circulating water pump can be effectively utilized, the contact area of circulating pump and cooling air is increased, the cooling capacity of the cooling tower is fully utilized, and the cooling effect of the circulating water is effectively improved.