Circulating device for preventing low-temperature cooling water from generating condensed water

The present invention discloses a circulating device for preventing low-temperature cooling water from generating condensed water. A main water inlet is connected with a valve (5), a plurality of devices to be cooled and a main return water port in turn through water pipes; the main water inlet is connected with a water tank through a valve (1); the water tank is connected with a water inlet distribution block through a valve (2) and a water pump; the water inlet distribution block is connected with a plurality of heat exchangers through manual ball valves respectively; the heat exchangers are connected with a return water distribution block through the water pipes; the return water distribution block is connected with the water tank through a valve (4); and the return water distribution block is connected with the main return water port through a valve (3). The water tank is provided with a temperature sensor which is electrically connected with the valve (1), the valve (2), the valve (3), the valve (4) and