基于部件间容积法的自然循环蒸发器动态仿真

Dynamic Simulation of Evaporator of Natural Circulation Evaporator Based on Inter-component Volume Methodology

蒸发器是锅炉吸收热量的关键部件之一,建立自然循环汽包锅炉蒸发器的动态模型并进行仿真,对研究汽包锅炉的动态特性有重要意义。在分析已有文献对自然循环蒸发器建模和仿真方法的基础上,从模块化建模的角度出发,通过对蒸发器内部结构进行更为合理的假设和划分,建立了基于部件间容积法的自然循环汽包锅炉蒸发器动态数字仿真模型。利用所建模型对汽包锅炉蒸发器的动态特性进行了仿真研究,结果不但证实了模型的有效性,并且避免了传统方法的迭代问题,能够满足更大范围的动态和实时仿真要求,可以为各类自然循环蒸发器建模仿真作参考。

Evaporator is a critical component of natural circulation drum boiler with a consideration of heat transfer. An interesting challenge for researcher is to develop a concrete evaporator simulation model for the exploration of boiler characteristics. Based on the previous efforts in open literature, this paper begin to refine the inner structure division, then implements modularization modeling method to develop a dynamic evaporator simulation model. Specifically inter-component volume methodology is used. Finally, concrete simulations are conducted and results show that the proposed model can satisfy with an optimistic operating range of drum boiler. Moreover, the iteration problem of traditional method is resolved. It is believed that the efforts in this work are valuable inproposing a reference for similar research.