油田直热炉温度/流量的模糊控制

Fuzzy Control of the Temperature and Flow Rate of an Oil Field Direct-heated Furnace

如果控制不当直热炉燃烧过程中会出现偏流现象,将导致加热管内结焦,多次烧焦后就必须更换加热管。在分析直热炉燃烧过程中的偏流成因和处理手段的基础上,提出油田直热炉温度/流量的模糊控制方案。该方案实施后偏流问题得到了彻底的解决,使得加热管一直连续使用而无须更换。另外,还提出采用离散模糊控制器的新方法,完全可以解决其它流体的流量分配控制系统运行中的偏流问题。实际运行表明该方案是合理和有效的。

The improper control of a direct heated furnace installed at an oil field will give rise to bias flows during its combustion, often resulting in coke formation in the heating tubes, which eventually have to be replaced. On the basis of analyzing the underlying causes of bias flows during the operation of the direct heated furnace and possible measures for dealing with such flows a fuzzy control scheme for the temperature and flow rate has been proposed for the furnace. The implementation of the scheme has thoroughly solved the problem of bias flows, eliminating the need for replacement of the heating tubes. Moreover, the use of a discrete fuzzy controller proposed by the authors can also solve the bias flow problems in other control systems involving the distribution of fluids,