烘箱结构对绝缘子固化过程温度场分布的影响

Effect of Oven Structure on Insulator Temperature Field Distribution During Curing Process

由于'补胶'效应的存在,盆式绝缘子在固化成型的过程中需要自下而上依次固化,这就要求环氧树脂在固化时有1个合理的温度梯度。为了研究烘箱的结构对绝缘子固化成型过程中的温度场分布的影响,以现有烘箱为基础设计1种新型烘箱结构,利用comsol有限元仿真软件,对新、旧烘箱下环氧树脂的整个固化成型过程进行仿真分析。仿真数据表明:相比于旧烘箱,在新烘箱固化的绝缘子在固化过程中的温度分布较好,同时也能更快达到固化所需要的温度。通过对1 100 kV盆式绝缘子固化过程中的温度以及应变大小进行试验测量,结果表明:新型烘箱试验数据与仿真结果的温度误差约为2%之内,验证了仿真的正确性。与旧烘箱相比,新型烘箱结构在绝缘子固化过程中的应变减少约10%,表明了新型烘箱的优越性。

Due to the‘filler’effect,the pot insulators need to be solidified from bottom to top during the curing process,thus the epoxy is required to have a reasonable temperature gradient during curing.In order to study the influence of the structure of the oven on the temperature field distribution during the curing process of the insulator,a new oven structure was designed based on the existing oven,and the entire epoxy resin was used in the new and old ovens using the comsol finite element simulation software.Moreover,the solidification molding process was simulated.The simulation data show that,compared to the temperature distribution of the insulator cured in the old oven,the temperature distribution of the insulator cured in the new oven during the curing process is better,and the temperature required for curing can be reached faster.The test results of the temperature and strain during the curing process of the 1 100 kV basin insulator show that the temperature error of the new oven test data and simulation results is about 2%,which verifies the correctness of the simulation.Compared to the strain of the insulator cured in the old oven,the strain of the insulator cured in the new oven structure will be reduced by about 10%,indicating the superiority of the new oven.