论文部分内容阅读
由于来油组分的不断改变,原油的日输量与温度、粘度之间不可能建立准确的数学模 型,使得加热泵站不论用控制温度加热输送工艺,还是用控制粘度加热输送工艺,都不可能根据生 产任务准确地确定加热原油的温度,或加热后出站原油的粘度,这就给调度工作带来不便。由于出 站油粘度稳定和流量稳定是等效的,由此提出用流量传感器代替粘度传感器组成自动控制系统来 控制加热炉温度,以实现控制粘度加热输送工艺。根据原油的日输量能够准确地计算出原油的流 量,能极大地方便生产调度工作。分析了使用流量传感器的主要优点:可省去采样管道的设计和施 工;不必购置专用的流量传感器;如果输送途中环境温度下降,使管道中原油粘度增大、流量减小 时,泵站的流量传感器会反应出流量减小,并通过自动控制系统提高加热炉温度,使输油更加安全。 可靠。
Due to the continuous changes of the oil components, it is impossible to establish an accurate mathematical model between the daily output of crude oil and the temperature and the viscosity, so that the heating pump station heats the conveying process by controlling the temperature or heating the conveying process by controlling the viscosity It is possible to accurately determine the temperature of heated crude oil or the viscosity of outbound crude oil after heating according to the production task, which brings inconvenience to the scheduling work. Due to the stable viscosity of outbound oil and the stable flow rate, it is proposed to use the flow sensor instead of the viscosity sensor to form the automatic control system to control the temperature of the heating furnace so as to realize the control of the viscosity heating and conveying process. According to the daily output of crude oil can accurately calculate the flow of crude oil, which can greatly facilitate the production scheduling. The main advantages of using the flow sensor are analyzed: the design and construction of the sampling pipeline can be omitted; the special flow sensor need not be purchased; if the ambient temperature drops during transportation, the viscosity of the crude oil in the pipeline increases and the flow rate decreases; Will reflect the flow rate decreases, and through the automatic control system to improve furnace temperature, the oil safer. reliable.