AUTOMATED CONTROL SYSTEM FOR THE COMPOUNDING PROCESS OF MIXED OILS WITH REGULATION OF PUMPING AND DISCHARGE OF SOUR OIL Russian patent published in 2021 - IPC G05D11/02 

FIELD: automation equipment.

SUBSTANCE: invention relates to automation equipment and can be used in pipeline transport when pumping oil from several pipelines into a common pipeline through which the oil mixture is transported to the consumer. The automated control system for compounding mixed-grade oils with regulation of pumping and discharge of sour oil contains at least two oil pipelines intended for transporting oil streams and an oil pipeline intended for a mixed flow, a unit for measuring the quality indicators of a mixed flow, a unit for measuring the parameter of a sour oil flow, sour oil flow rate meter and mixed flow rate meter, computing devices for recording the amount of sour oil and the total amount of the mixed flow, as well as for determining the ratio of the rate of sour oil to the flow rate of the mixed flow to increase control efficiency, flow control device, while the outputs of the measurement unit the parameter of the flow of sour oil, the unit for measuring the quality indicators of the mixed flow, the meter for the flow rate of the sour oil and the meter for the flow rate of the mixed flow are interconnected with the corresponding information inputs of the control unit. the control output of which is interconnected with the flow control device. A manifold branch with an installed pressure regulator is cut into the sulphurous oil line (SO) supplying the flow to the receiving line of the booster pumping station in front of the flow control device designed to maintain the pressure on the sulphurous oil line at a value that is no more than a specified value while regulating the flow rate of pumping sour oil for mixing and allowing a part of the oil flow to be dumped into the reservoir when the pressure regulator is triggered. At the same time, a function for monitoring the maximum pressure value on the sulphurous oil line was introduced in the control unit (CU), when the set pressure value is reached, a control signal is sent to open the valve of the pressure regulator, while part of the flow is discharged into the reservoir, and when the pressure drops, the valve is closed or completely closes.

EFFECT: ensuring the maintenance of the specified quality indicators of the compounded oil, ensuring the pressure control and maintaining the pressure within the specified limits in the pipeline with sour oil entering the common pipeline, ensuring the accounting of the amount of oil sent to the consumer through the common pipeline, and the amount of sulphurous oil, as well as the amount of discharged sour oil into the tank.

6 cl, 2 dwg