单井石油储油罐原油太阳能加热自动控制系统

System of single-well oil tank crude solar heating automatic control

针对传统的井口输油管道原油电加热器和水套炉存在的热效率低、功耗大、不稳定、废气对环境造成污染等问题,提出了以太阳能集热器为主,热泵热水器为辅的加热控制系统.该系统采用温度采集卡实现10路温度信号及6路开关量信号的采集,利用S7-200可编程控制器对太阳能集热器和热泵进行交替控制,从而实现储油罐原油的加热控制,并基于RS-485协议及K-TP178micro触摸屏进行实时显示.由于油田油罐分布稀疏,提出了油田油罐太阳能加温网络系统的方案.经现场测试,系统的稳定性高,数据传输可靠,罐出口原油温度控制在55~60℃,采集精度保证在±0.5℃,单井的月节电量为3×104 kW.h,节能效果显著.

In order to solve the shortcomings of the traditional crude oil wellhead pipeline electricity heater and water heater,such as low thermal efficiency,high power consumption,unsettled,pollution of the environment,etc,the heater system is proposed that mainly makes use of the solar energy collector,and the heat pump heater supplement.The system uses a temperature acquisition card to achieve the signal acquisition of 10-channel temperature and 6-channel switches.By using S7-200 programmable controller to control solar collectors and heat pump,the heating control of oil tank crude can be achieved and displayed timely based on RS-485 protocol and K-TP178 micro touch screen.As the sparse distribution of oil tank,system of oil tank solar heating network is proposed.The field tests show that the system has high stability,accurate and reliable data transmission,oil temperature in the export of the tank is kept at 55-60 ℃,acquisition accuracy ensured at ±0.5 ℃,monthly electricity-saving of a single well is 3 × 104 kW.h,energy-saving effect is remarkable.