离心式 泵 是一种旋转动力泵,它利用旋转叶轮来增加流量。 压力 流体的流量。流体沿轴向靠近旋转轴进入泵,被叶轮的叶片加速,并径向向外流入扩散器或蜗壳室。在该腔室中,流体的高动能转化为高压能。

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The operation of a centrifugal pump is based on converting rotational energy from a motor into energy in a moving fluid. The two main components responsible for this are the impeller and the volute (or casing). The impeller is a rotor with a series of curved vanes. As it spins, it imparts a high velocity to the fluid, which is drawn in at the center (the ‘eye’ of the impeller) and thrown outward by centrifugal force. The fluid exiting the impeller has high kinetic energy.
流体随后进入蜗壳,蜗壳是一种特殊设计的螺旋形壳体,环绕着叶轮。蜗壳的横截面积沿流体路径逐渐增大。这种面积的增大导致流体流速降低。根据伯努利原理,当流体速度降低时,其压力必然升高(假设高度不变)。这种将动能转化为压力能的过程是蜗壳的主要功能。加压后的流体随后从泵出口排出。
与容积泵不同,离心泵提供平稳、无脉动的流量。它们的输出流量随系统的背压或扬程变化很大。离心泵在泵送低粘度流体(如水)时效率很高,并且能够达到很高的流速,因此是全球范围内应用最广泛的泵类。.
离心泵
(如果日期未知或不相关,例如“流体力学”,则提供其显著出现的近似估计)
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