| 摘要 |
FIELD: compressor plant automation; surface protection. ^ SUBSTANCE: proposed method includes measurement of parameter presenting dynamics of process of compressing and statistic processing of parameter basing on results of which surge presence signal is formed. According to proposed method, surge parameter is revealed using ratio of dispersion of pressure differential signal measured by flowrate meter of trubocompressor to square of its mean value, and introduction of additional surge symptom coming to determination of parameter of behaviour of pressure differential on flow rate meter of turbocompressor characterizing tendency to decrease of said pressure differential and generation of surge presence signal only when surge parameter exceeds threshold value, and parameter of behaviour of pressure differential of flowrate meter characterizing tendency of pressure differential to decrease, will be lower than its threshold value. System to reveal surge contains pressure differential sensor on flowrate meter installed in suction main line of compressor, low-pass filters, squarers, summers, delay element, divider, comparators, AND gates, trigger, switch off delay gate, and inverter. ^ EFFECT: improved quality of revealing of surge owing to elimination of false diagnosing, improved economic efficiency in practice. ^ 3 cl, 2 dwg |
