A METHOD AND A SYSTEM FOR ENHANCED FLOW LINE CONTROL

摘要

The invention relates in a first aspect to a method for automatically controlling a flow in a flow line system including a flow line (3), a flow line inlet (1) and outlet (2), and a control valve (4) located in the flow line (3) at the outlet (2). The method includes the steps of: controlling the opening of the valve by means of a control unit (5) measuring or estimating an outlet flow rate (FT2), for example, from the flow line (3), and opening of the valve, determining if a sudden drop occurs in any of the measurements or estimates, deciding if a liquid blockage in the flow line is present or approaching, and if a liquid blockage is indicated as present or approaching, increasing the opening of the valve (4) by an amount determined by the measurements or estimates, inhibiting any further manipulation of the valve (4) before a non-zero time period has expired, and repeating the steps according to the above. The invention also relates to a corresponding system and a computer program product.