Cooling device for four-roller motor of steel mill

The utility model relates to a cooling device for a four-roller motor of a steel mill. The system comprises a water chilling unit, a plurality of surface air coolers and a water system pipeline, wherein the water chilling unit is a water-cooling screw type water chilling unit and comprises a flooded evaporator, a semi-closed screw compressor, an external oil separator, a water-cooling condenser, afilter, an electronic expansion valve and an electrical control system, and the water system pipeline comprises a chilled water outlet pipeline, a chilled water return pipeline, a cooling water outlet pipeline, a cooling water return pipeline and a high-level water supplementing tank. The device can achieve the purposes of automatically controlling the return air temperature of the air conditioner and saving energy, can achieve condensation-free air supply, and can achieve refrigeration all the year round. 本实用新型涉及一种轧钢厂四辊电机用冷却装置，包括冷水机组、若干套表冷器和水系统管路，冷水机组为水冷螺杆式冷水机组，包括满液蒸发器、半封闭螺杆压缩机、外置油分离器、水冷冷凝器、过滤器、电子膨胀阀和电气控制系统，水系统管路包括冷