Condensate water system of air cooling unit

The invention provides a condensate water system of an air cooling unit. The condensate water system comprises a small machine condenser, a main machine exhaust device and a sealing water pipeline, wherein the sealing water pipeline is connected with the small machine condenser and the main machine exhaust device and comprises a first water seal with a hot well end and a water drain end and a second water seal with a water receiving end and a spraying end; the spraying end of the second water seal w is positioned on the surface of main machine condensate water in the main machine exhaust device. According to the optimized structure of the condensate water system, as one end for enabling small machine condensate water to flow in the main machine exhaust device is arranged on the surface of main machine condensate water, the small machine condensate water flowing in the main machine exhaust device exchanges heat with high temperature steam in the main machine exhaust device, therefore the temperature of the small machine condensate water falling into main machine condensate water below keeps consistent with the temperature of the main machine condensate water, the increasing of the degree of supercooling of the main machine condensate water is prevented, and the energy waste caused by a main steam turbine heating the main machine condensate water is reduced.