WET TYPE SPRINKLER SYSTEM FOR PREVENTING METAL PIPE CORROSION

摘要

The present invention relates to a wet-type sprinkler system capable of preventing the corrosion of a metallic pipe capable of preventing the corrosion of a water supply pipe and a branched pipe made of a metallic materials such as copper and the like by preventing air from remaining inside the water supply pipe and the branched pipe. The wet-type sprinkler system capable of preventing the corrosion of the metallic pipe according to the present invention includes: a water supply device supplying fire water; the water supply pipe distinguished into a first water supply pipe in a front side of a check valve and a second water pipe in a rear side of the check valve; the branched pipe branched from one side of the second water supply pipe; a sprinkler head formed in one end of the branched pipe and injecting the fire water to the outside; a test pipe branched from one side of the branched pipe; a drain main pipe branched from one side of the second water supply pipe; and a drain pipe structure connected and formed to/in one side of the drain main pipe. The drain pipe structure includes a drain connection pipe connected to the drain main pipe and a vacuum pipe (or an inert gas supply pipe) branched from one side of the test pipe or branched from a spot of the drain connection pipe. A vacuum pump or an inert gas supply device is formed in one end of the vacuum pipe or the inert gas supply pipe. Air inside the second water supply pipe and the branch pipe is discharged by the operation of the vacuum pump or the inert gas supply device.