A method for evaluating a injection quality in the case of steam injections, in particular in the case of a steam reducing station

摘要

The invention relates to a method and to a system for evaluating the injection quality of vapor injections, especially in a vapor reducing station. A temperature is precisely measured in discrete points along the evaporation path in the longitudinal and the circumferential direction of the pipeline on the outer surface of the pipeline across a determined interval each per measuring point, using one or more surface temperature measuring elements. A temperature distribution field is determined from which a temperature-induced tension condition of the pipeline can be inferred which is used to control the quantity of water to be injected and to constructively adapt one or more nozzles of the injection system. To this end, a plurality of measuring points (2) are arranged in a pipe insulation (6) on the pipeline (1) in the form of bores (3) that are evenly spaced apart across the entire circumference in the longitudinal direction in a length of the evaporation path (8). One surface temperature measuring element (4) each is inserted in the bores (3) and directly strikes the surface of the pipe (1) without damaging the surface, said measuring element being coupled to a measuring device (5).