Heat transfer oil assembly with leakage detection and method for detecting leakage on a heat transfer oil assembly

摘要

A thermal oil system (1) contains heat transfer oil, which forms at a first temperature (T 1) and at a first time an instantaneous reference volume (V r) and the operation of the heat transfer oil system (1) at a second temperature (T 2) and a relative to the first time by a difference period time offset second time an actual current operating volume (V a) forms. By means of a volume change measuring device (12) an occurring over the differential period actual volume change (V a) between the current reference volume (V r) and the actual instantaneous operating volume (V a) of the heat transfer oil is determined. A temperature measuring device (20) determines a temperature difference ("T) between the first temperature (T 1) and the second temperature (T 2) of the heat transfer oil. A target operating volume calculation device (21) connected to the temperature measuring device (20) determines, based on the instantaneous reference volume (V r) and the determined temperature difference ("T) of the heat carrier oil, an instantaneous desired operating volume (V n) associated with the second point in time. the heat transfer oil. A target operating volume comparison device (23), which is connected to the desired operating volume calculation device (21), determines a desired value occurring over the differential period by comparing the instantaneous reference volume (V r) of the heat carrier oil and the instantaneous desired operating volume (V n) of the heat transfer oil Volume change (V n) of the heat transfer oil. A volume change comparing means (24) which is connected to the volume change measuring means (12) and the target operating volume comparing means (23) compares the actual volume change (V a) of the heat transfer oil and the desired volume change (V n) of the Heat transfer oil with each other. An evaluation device (25) connected to the volume change comparison device (24) determines a leakage of the heat transfer oil system (1) if the actual volume change (V a) of the heat transfer oil from the nominal volume change (V n) of the heat transfer oil by a volume change Deviation ("V"), which indicates a leakage of the heat carrier oil system (1).