Cooling water communicating and supplementing device for multiple cooling-water machines

The utility model relates to a cooling water communicating and supplementing device for multiple cooling-water machines, which comprises a first cooling-water machine water tank, a second cooling-water machine water tank and a third cooling-water machine water tank which are connected with a main pipeline through respective valves and branch pipelines. The main pipeline is connected with the buffer water tank through a water tank drain valve arranged at the bottom of the buffer water tank, and the first cooling-water machine water tank 1, the second cooling-water machine water tank 7 and the third cooling-water machine water tank are connected with the buffer water tank in parallel and communicated through respective normally-open valves of the four water tanks to form a communicating vessel water replenishing mechanism with the four water tanks kept consistent in water level all the time. According to the utility model, the original water adding frequency of once every 15 days is prolonged to about once a qu