| 摘要 |
PURPOSE:To prevent fluctuation of branched fluid flow rate in a piping system in which a header has branch pipes provided with fluid outlets at least in three directions, by providing a swirlling flow inducing device on at least a side of the branch pipes or the vicinity. CONSTITUTION:In a piping system in which a cross branch pipe 5 connected to a header 4 has connection of horizontal branch pipes 6, 6 and a vertical riser pipe 8, the longitudinal section cofiguration of a reducer 11 connected right above the cross branch pipe 5 is manufactured to have a steep slanting surface on a side and a vertical surface on the opposite side in the same manner as the inner surface of the branch pipe 5. By this configuration, the outlet center point C1 and the inlet center point C2 are made eccentric and the eccentric reducer 11 comes to have a function of swirlling flow inducing device. Thus, on the vicinity of the cross branch pipe 5 a stable counterclockwise swirlling flow is produced and smooth branching of the flow to the horizontal branch pipe 6, 6 is made possible. |
