| 摘要 |
To determine the leaking points in grid conduit networks (4, 5, 6), particularly in drinkable water networks, regularly, simultaneously and each time during a given laps of time (for example during half an hour every day) flow parameters are recorded in control post (9-13, 18, 22) arranged along the conduits and forming grid control circuit which may be interconnected. Deviations, in particular on a plurality of successive measuring lengths, appearing during this laps of time are an indication of the presence of a leakage in the corresponding control circuit, the advantageous locations for disposing control posts are those where, during this short laps of time compared with the time when the consumption is high in comparison, a reversal of the flow direction (line 17) occurs. The process is also appropriate for localising already existing leakages. For the application of the process, a measuring unit is used as a control post (31-33) which is already assembled and ready to be mounted, containing all the devices (48, 49 54, 55, 56) required for performing and handling the measurement of the flow parameters. Together with this measuring unit, an alarm may be set in the spot (20) and/or transmitted (19) to a central station (3). |
