仪表风控制重沸器温度的改造

Reconstruction of Rboiler Temperature Controlled by Instrument Wind

在煤层气脱水装置中,三甘醇重沸器温度是一个关键控制参数。针对三甘醇重沸器加热炉燃料气供气管路,设计了一种温度自动控制系统,该系统包括温度变送器、电磁阀、继电器、上位机、采集卡件、控制线路等;改进了原来由仪表风控制阀门启闭对温度控制的不准确性。本文对实验装置的搭建和上位机硬件电路做了详细说明。该装置具有实时监测、调节准确等优点,经过测试该系统具有良好的稳定性和控制精确度,抗干扰能力强。

The temperature of TEG reboiler is a key controlling parameter in CBM dehydration unit.For the fuel gas supply pipeline of TEG reboiler heating furnace,a temperature automatic control system is designed,which includes temperature transmitter,solenoid valve,relay,upper computer,acquisition card,control circuit,etc.The inaccuracy of temperature control by opening and closing valve of instrument wind has been changed.The construction of experimental device and hardware circuit of upper computer are described in detail in this paper.The device has the advantages of real-time monitoring,accurate regulation,etc.After testing,the system is proved to have good stability and control accuracy,with strong anti-interference ability.