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根据热平衡试验数据与计算结果的比较,分析两者存在差异的原因,用热平衡试验稳态工况数据修正对接机构热模型中的单元划分和热网络方程。研究了对热网络方程修正的方法,基于参数化和节点群概念改进参数化节点群整合方法,以明显减少需修正系数的数量,并与分级修正和局部修正综合,提高热网络修正方法的实用性。算例表明:通过热模型修正使温度计算值与试验值的偏差达到允许的要求,表明该热模型修正方法有效。
Based on the comparison of thermal balance test data and calculation results, the reasons for the difference between the two are analyzed. The unit division and thermal network equation in the thermal model of butt joint mechanism are corrected by steady state data of thermal equilibrium test. The method to correct the heat network equation is studied, and the parameterized node group integration method is improved based on the parameterization and the concept of node group, so as to obviously reduce the number of required correction coefficients and to integrate with the classification and local correction to improve the practicality of the heat network correction method Sex. The example shows that the thermal model correction can make the deviation between the calculated temperature and the experimental value reach the allowable requirement, which shows that the thermal model correction method is effective.