The invention discloses a water penetrating cooling gas seal device, and belongs to the technical field of cooling equipment. The device comprises a composite water beam, a cross beam, a base and a gas seal
nozzle assembly, the cross beam is mounted on the base, the cross beam is provided with the composite water beam, the rear end of the composite water beam is provided with a water penetrating cooling dry running through, the front end of the composite water beam is provided with multiple gas seal
nozzle assemblies, the seal device is simple in structure and short in construction time, long-time production interruption cannot be caused, under the condition that a
water cooling tank is not replaced, and through air spraying of gas seal nozzles, the phenomena that due to increasing of finished product speed, in order to ensure steel properties, the
water pressure of the
water cooling tank is increased, a large amount of cooling water is brought out by rolled
metal and left in the dry run groove, remaining water in the dry run groove enables the rolled
metal to be obstructed, steel stacking is caused, due to the fact that a naturally-cooled pinch roller has water, the water is brought in, a high-speed rotation high-temperature roller ring is cooled and exploded, and serious process and equipment accidents are caused can be avoided.