Electrical cabinet cooling device with high heat preservation effect

The utility model discloses an electrical cabinet cooling device with a high heat preservation effect, and belongs to the field of cooling device design. Comprising three layers of air inlet pipes, the inner diameters of the three layers of air inlet pipes are decreased progressively, and the three layers of air inlet pipes are sequentially connected in a sleeved mode to form three air inlet cavities; the plurality of electrical cabinets are communicated with the cold air cabinet through the air return part, the air return part comprises three layers of exhaust pipes, the inner diameters of the three layers of exhaust pipes are gradually decreased, and the three layers of exhaust pipes are sequentially connected in a sleeved mode to form three exhaust cavities. The air conditioner has the beneficial effects that the efficiency of heat exchange between cold air in the three air inlet cavities and the outside is gradually reduced from outside to inside, it is guaranteed that the temperature of the cold air on t