Method and device for collecting heat dissipation water vapor at top of thermal power plant circulating water cooling tower

A device for collecting heat dissipation water vapor at the top of a thermal power plant circulating water cooling tower is disclosed. The cooling tower is a hyperbolic cooling tower, a cold water pool is arranged at the bottom of the cooling tower, the cold water pool comprises a collecting cover, a flow guiding trough, four drainage pipes, a rigid ring and a plurality of axial flow fans, the collecting cover is an annular cover body, the annular side face of the collecting cover is in a certain radian, the collecting cover is located at the top of the cooling tower, and the flow guiding trough is an annular trough; and the annular body surrounds the upper portion of the cooling tower and is located at the bottom of the collecting cover to be integrally connected with the collecting cover, the four drainage pipes are located on the side wall of the cooling tower, one end of each drainage pipe communicates with the flow guiding trough, and the other end of each drainage pipe is connected with the cold water p