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高压SF6断路器能量分离喷口区域的气流参数特性

DOI: 10.13336/j.1003-6520.hve.2015.09.042, PP. 3123-3129

Keywords: 能量分离,喷口,涡旋,高压SF6断路器,开断,气流场

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Abstract:

为有效控制喷口区域气流运动、提高高压开关开断能力,以高压SF6断路器(HVSF6CB)为研究对象,在喷口上游平直段构造“;X”;形导流片结构,使气流形成涡旋运动产生能量分离,气流产生径向动能交换以调控断口区域气流温度梯度。建立550kVSF6断路器灭弧系统3维气流场物理数学模型,采用有限体积法研究容性小电流开断下,喷口上游“;X”;型导流片对灭弧室内气流参数的影响。结果表明,有导流片结构灭弧室断口区域内的气流呈组合涡运动形式,沿壁面周向呈大旋转曲率强旋运动,轴中心气流折返,断口区域温度降低,产生了能量分离效应。

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