深冷空分增压膨胀机组运行特性关联参量的RBF建模

RBF Modeling about Operation Characteristic Parameters Relationship of Booster Expansion Turbine for Cryogenic Air Separation Unit

为了满足现场软测量的要求,研究了某制氧机公司正在调试的深冷空分设备用增压膨胀机组的膨胀空气流量、膨胀端进口压力、膨胀端进口温度、膨胀端出口温度、增压端出口压力和膨胀机转速的因果关系,建立了RBF神经网络模型,实现了运行特性量间关系的高精度拟合和预测。获得的神经网络模型的精度至少在96.97%以上。利用学习好的RBF神经网络可以迅速方便地实现现场运行特性参量间关系的预测。

In order to meet the requirements of soft measurement for site,relationships of cause and effect between expansion air flow,expansion-side inlet pressure,expansion side inlet temperature,expansion-side outlet temperature,booster-side outlet pressure,and expansion turbine rotational speed from booster expansion turbine of cryogenic air separation unit debugged by an oxygen machine company were studied. RBF neural network model were established,precision fitting and forecastings between operating characteristics were achieved. The accuracy of the resulting neural network model is at least 96. 97%. trained RBF neural network can easily achieve the predicted relationship between field operation characteristics parameters.