| 摘要 |
The present invention is a bubble reduction drainway structure having bypass flow for bubble separation, which reduces a speed of water flow, makes the water overflow upwards, simultaneously destroys bubbles, and discharges the water through bypass flow, thereby discharging only waste cooling water without bubbles into underwater of open sea. According to an embodiment of the present invention, a reduction water passage with an uniform section of drainage in an upper flow side of a predetermined slope portion slanted downward and a dispersion water passage, which has a section gradually increased away from the reduction water passage, are continuously constructed. An overflow tank where underwater weirs for forming a first overflow room and a second overflow room are installed at a center in a lower flow side of the dispersion water passage in such a manner that the underwater weirs protrude from a bottom with a predetermined height in a perpendicular direction respective to a direction of the water passage. A bubble destroy shower water inlet, which allows bubble destroy shower water for destroying accumulated bubbles floated over the water surface to be sprayed and introduced, is formed an upper part of the overflow tank. The overflow tank includes a U-shaped bypass pipe, which has an inlet at one end thereof is positioned at the second overflow room and an outlet at the other end thereof passing through a wall of the second overflow room to be positioned at a reduction tank. The reduction tank for discharging treatment water passing through the U-shape bypass pipe to open sea is constructed at one side of the overflow tank. |
