| 摘要 |
The invention relates to a method of detecting leakages in pipe installations with supply and return pipes by means of a leakage control system (1 ), which comprises partly at least one shut-off valve (2) with an associated electric actuator (9) and a flow meter (3) arranged in the supply pipe (4) of the pipe installation, partly at least one shut-off value (5) with an associated actuator (9) and a flow meter (6) arranged in the return pipe (7) of the pipe installation, said shut-off valves (2, 5), actuators (9) and flow meters (3, 6) being connected with a control box (8). The control box is adapted to execute the method when running through a periodic course comprising a measurement and activity period followed by an inactive period, said measurement and activity period comprising - collection of flow data from the supply pipe (4) and the return pipe (7) with the associated flow meters (3, 6), - recording of the presence of air in the supply pipe (4) and the return pipe (7), - processing of the collected flow data in a computing unit, - recording of operational disturbances on the basis of the processed flow data, and - decision on intervention on the basis of the number of recorded error disturbances, if the number of error disturbances exceeds an error criterion (B), said error criterion (B) being corrected currently in accordance with the number of air indications. The invention moreover relates to a leakage control system for performing the method. Hereby, a method and a leakage control system are disclosed, which also tolerate the behaviour of ultrasound meters, without the system giving false alarms, and without reducing the sensitivity of the system. |
