A device for retaining liquid in a pipe having a substantially horizontal end open, when the flow of liquid drops below a threshold gives

摘要

A device 38 is placed in a horizontal line 28 whose output debouche in a gaseous medium, in order to retain the liquid normally flowing through the pipe when the flow rate falls below a threshold gives. This device comprises ducts such as tubes 42a is 42d having at least one low point and at least one high point located downstream of the low point. For this purpose, the tubes 42a is 42d may be wound in a helix around a hub 40. The tubes are fixed at their upstream end in a sealed plate 44. The holes 48b has 48d drilled in the tubes at the location of the high points shall avoid any siphon effect. Liquid plugs are formed in the tubes 42a is 42d when the flow is low or zero.