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对多级离心泵径向载荷和轴向推力进行了测试分析，并时该泵在三种间隙密封下径向载荷和轴向推力随流量变化而改变的趋势作了定性的研究，发现密封间隙是影响转子径向载荷的重要因素，尤其是在小流量工况点
The radial load and axial thrust of multistage centrifugal pump were tested and analyzed. And when the pump under the three kinds of gap seal, the radial load and axial thrust were changed qualitatively with the change of flow rate. It was found that the seal clearance Is an important factor affecting the radial load on the rotor, especially at low flow conditions