基于正交设计和灰色关联理论的板式省煤器优化

Optimization on the Structure of Plate Economizer Based on Orthogonal Design and Grey Relational Theory

摘要:

基于正交设计理论和灰色关联理论对新型板式省煤器的结构参数进行了优化研究.选取3种优化变量 (长轴长度、短轴长度和板间距)，采用正交设计方法确定9组计算模型.综合模拟结果与仿真验证分析得到新型板式省煤器的优化结果，当烟气走板间波纹通道、水走板内循环通道时，在新型板式省煤器长轴长度、短轴长度和板间距3种优化变量中，对优化指标影响最大的因素是板间距，其次是长轴长度，影响最小的是短轴长度.当板长为400 mm时，新型板式省煤器的最优结构参数组合为，长轴长度为32 mm、短轴长度为12 mm、板间距为25 mm.并搭建试验台，对此最优结构进行试验验证。研究结果为板式省煤器的设计提供一种思路.

关键词:板式省煤器; 正交设计; 灰色关联度; 优化

Abstract:

Based on orthogonal design theory and grey correlation theory, structure parameters of new type economizer were optimized. Nine groups of calculation models were defined according to the orthogonal design method and three kinds of variables (long axis, short axis and plate spacing). Combined the simulation conclusions and analysis, the optimization results of plate type economizer show that: when the gas flows in corrugated channel and water flows in internal circulation channel, plate spacing, among the three factors, has the most significant impact on the optimization index. When the plate length is 400 mm, the optimal structural parameters of new plate and shell economizer are as follows: when the long axis is 32mm, the short axis is 12mm and the plate spacing is 25 mm. In addition, an experimental platform was set to verify the optimal structure, which provides a new method for the design of plate type economizer.

Key words:plate type economizer; orthogonal design theory; grey relational theory; optimization