A fpso vacuum automatic stripping control method

Abstract

The invention relates to an FPSO vacuum automatic cabin stripping control method, which adopts the detection information of the separation tank liquid level collected by the liquid level sensor, adopts the vacuum degree sensor to collect the detection information of the vacuum degree, and combines the collected detection information of the vacuum degree with the separation tank The detection information of the liquid level is sent to the programmable controller as the feedback quantity of the vacuum degree and the liquid level of the separation tank, and the feedback quantity of the vacuum degree and the liquid level of the separation tank are sent in through the programmable controller using a closed-loop control algorithm. According to the functional relationship between the vacuum degree and the liquid level of the separation tank, the accurate feedback value and the separation tank required for controlling the vacuum sweeping are obtained. The feedback quantity of the liquid level is used by the programmable controller to control the vacuum degree required for vacuum sweeping and the feedback quantity of the liquid level of the separation tank to control the vacuum pump, vacuum valve and flow valve to realize vacuum sweeping. cabin automatic control.

Description

technical field [0001] The invention relates to the technical field of automatic control, in particular to an FPSO vacuum automatic stripping control method. It is about the control method of cargo oil ballast automatic stripping of FPSO platform. FPSO is the abbreviation of Floating Prouduction Storage&Offloading in English. The Chinese translation of FPSO is: floating production storage and offloading device, which integrates production processing, storage and transportation, life and power supply. The FPSO device is an integral part of the offshore oil and gas development system. Background technique [0002] As far as the applicant knows, the crude oil loading and unloading system equipment on the FPSO platform is still blank in China, but has been used in the development of offshore oil and gas in some advanced and developed countries. As an important part of the FPSO crude oil handling system, the FPSO cargo oil ballast integrated system is of great importance. It i...

AI Technical Summary

Problems solved by technology

Today's FPSO works in the offshore or deep sea, and usually faces harsh and complicated sea conditions. Due to the large shaking of the platform and poor stability, the stability and reliability of its vacuum automatic stripping will be affected to varying degrees. Using the liquid level of the separation tank and the opening of the regulating valve as the feedback to control the regulating valve, vacuum valve and vacuum pump can no longer meet the basic requirements of system control, so it needs to be improved to improve the stability and reliability of its control

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