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为得到鼠笼异步磁力联轴器工作时内部温度分布情况,首先通过理论计算确定了该联轴器的热源、导热系数和散热系数,然后借助ANSYS软件对其进行三维温度场模拟分析,得到磁力联轴器整体和各部分的温度分布,并通过场分析法,将温度场沿定义的路径进行映射,得到不同路径下的温度分布规律。结果表明:导条的最高温度为82.42℃,永磁体的最高温度为51.47℃,远小于永磁体的居里温度。沿径向由内转子轴孔到外转子外边界,温度分布是先高后低,具有明显的区域性,导条区域的温度最高且温差最小,气隙区域的温差最大;沿导条周向的温度分布呈周期性变化,其曲线近似为正弦曲线,周期为导条数。分析结果对大功率下的鼠笼异步磁力联轴器的温度场分析具有指导意义。
In order to obtain the internal temperature distribution of the squirrel cage asynchronous magnetic coupling, the heat source, thermal conductivity and heat dissipation coefficient of the coupling were first determined by theoretical calculation. Then the three-dimensional temperature field was simulated by ANSYS software to obtain the magnetic force The temperature distribution of the whole and each part of the coupling, and through the field analysis, the temperature field is mapped along the defined path to get the temperature distribution law under different paths. The results show that the highest temperature of the bar is 82.42 ℃, the highest temperature of the permanent magnet is 51.47 ℃, which is much smaller than the Curie temperature of the permanent magnet. The temperature distribution is first high and then low, with obvious regionality, the temperature of the guide strip area is the highest and the temperature difference is the smallest, and the temperature difference in the air gap area is the largest; along the guide strip circumferential direction The temperature distribution showed a periodic change, the curve is approximately sinusoidal, the cycle is the number of guides. The analysis results have guiding significance for the temperature field analysis of squirrel cage asynchronous magnetic coupling under high power.