基于相似定律的鼓风机温度补偿优化策略  

Temperature Compensation Optimization Strategy of Blower Based on Similarity Theory

作　　者：王红君[1] 郏书轩 赵辉[1,2] 岳有军[1] 

机构地区：[1]天津理工大学天津市复杂控制理论与应用重点实验室,天津300384 [2]天津理工大学自动化学院,天津300384

出　　处：《计算机仿真》2016年第2期244-247,349,共5页Computer Simulation

基　　金：天津市科技支撑计划项目(13ZCZDGX03800;10ZCKFGX03400);天津市自然科学基金项目(09JCZDJC23900)

摘　　要：在鼓风机温度优化控制的研究中,针对鼓风机在非标准环境工况下,由于特性曲线偏移而导致鼓风机实际工况点偏移和出现喘振问题,提出鼓风机温度补偿优化模型,可以有效的校正因温度变化发生偏移的鼓风机工作点,同时防止喘振放风。首先根据风机相似原理推导出风量风压修正系数,对鼓风机性能参数进行修正;再结合热力学理论分析鼓风机性能特性曲线随环境温度的变化规律,引入变量因子T,推导出风机转速与环境温度的数学关系,根据环境温度实际变化情况,提出一种分级温度补偿策略。求解模型得到补偿后鼓风机工作点和喘振线方程。最后,根据温度补偿模型提出了防喘振应用方案。仿真和应用节能结果表明,改进方法能有效补偿鼓风机特性曲线偏移,节能效果明显。The offset of blower characteristic curve in non-standard environmental condition causes blower actual working condition point offset and surge problem. The optimization model of Blower temperature compensation can effectively correct offset of the blower working point due to temperature changes and at the same time to prevent the surge. Firstly we used Air volume and pressure correction coefficient derived by similarity theory to correct the blower performance parameters. Then we used the thermodynamic theory to analyse the fan performance curve change rule with the temperature,introduced variable factor of T,and deduced the mathematical relationship of the fan speed and environmental temperature. According to the actual environment temperature changes,we put forward a hierarchical temperature compensation strategy. The compensated blower working point and the surge line equation were obtained after solved the model. Finally,according to temperature compensation model,this paper proposed an scheme to prevent the surge. Considering the simulation experiment and application energy saving,the results show that the method can effectively compensate the blower characteristic curve offset problem,and the energy saving effect is obvious.

关 键 词：温度补偿 误差分析 相似定律 鼓风机 防喘振 

分 类 号：N945.12[自然科学总论—系统科学]