FIELD: oil and gas industry.
SUBSTANCE: invention relates to control pressure in main pipelines for oil and oil products. Device contains a program-technical complex, a programmable logic controller, a frequency converter and shutter motor drive to control the degree of its closure. Degree of shutter closing and pressure value of pumped medium in pipeline before and after the shutter are measured. Settings include coefficients of increment proportional-differential controller, as well as parameters which calculate asymmetry of shutter closing control, non-linearity of pressure variation, possibility of pulse effect on shutter and parameters that provide for the protection of process equipment upon reaching certain values of pressure of pumped medium in pipeline.
EFFECT: higher accuracy and control speed.
2 cl, 2 dwg
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