Auto-adding Medicine Data Monitor System Of Crude Oil Gathering

Because of own quality of crude oil, when the crude oil enters the station,it needs the transaction of adding medicine,reasonablely adding medicine is the key of the normal production.Because there are many subordinate well station,the amount of oil is difficult to control, flux may be changed heavily in some times , and the temperature, press…etc. factor affect the concentration of medicine, so the manual work can hardly control the amount of medicine.Moreover,the press is also an important parameter in production, holding the related technique parameter on time, then can realize the best control of production.And currently in the local oil-field, the operation of adding medicine is numerously completed by manual work or setting the metric pump as stationary value, the amount of medicine can't dynamicly track crude oil flow, the worker of adding medicine needs guard 24 hours,the laboring intensity is heavy, the cost of manual guard is oppositely high, and the some important parameter also can't proceed real-time monitoring.The systems in the oil industry production are mostly big time lag, strong jam, nonlinear, time changed and may have coupling. adopting the methods that are based on creating process model can hardly realize useful control. Therefore the research of getting away from mathematic model of controlled system , have the important meaning to application and development of the modern control theory.According to reforming this current domestic behindhand operation method of adding medicine, solving the consumption of energy and manpower, the technique parameter can't monitor, and the accuracy of adding medicine can't control etc. problem, this text put forward" auto-adding medicine data monitor system of crude oil gathering".This system uses the Borland C++ Builder software to design monitor interface, the Oracle database to save and manage data, chooses Siemens S7-200 programmable controller to collect data, adopts model-free control method to realize precise control.The system according to the flow and the temperature, press etc. factor that influence adding medicine, computes automatically the amount of medicine , collects these parameterses to the computer, and save in the database, the handlers can look over the real-time or historical data by report forms and trend chart etc. various modes, and can also give an alarm to the press.The simulation of Matlab expresses, model-free control method can availably track the output, realize the precise control, solve the defects of the difficulty of manual control and the bad reliability of control.The adoption of crude oil gather auto-adding medicine data monitor system can not only economize the consumption of medicine amount, reduce the percentage of water in the crude oil, and will consumedly improve management level of the adding medicine work, guarantee the favoring progress of the production and improve product quality, but also be the basic of higher management level.