| 摘要 |
Arrangement for quick sectioning of a liquid or gas carrying pipe system having a forward pipe and a return pipe (F, R) respectively, which permits quick sectioning, i.e. arbitrary quick sectioning, to occur without water hammering arising in the forward pipe (F) or in the return pipe (R). The device consists of a regulating device (4, 5) in the pipe system's forward or return pipe and of fast closing sectioning valves (3) in the pipe system's forward and return pipes. The regulating device (1) continuously maintains the differential pressure at the sectioning location at substantially zero. In addition, a connecting conduit (2) arranged between the forward and return pipes in the pipe system is always open at the sectioning location. The flow in the connecting conduit is substantially zero during normal operating conditions. |
