屏蔽泵叶轮异常磨损分析及稳定运行预防维护措施

Abnormal wear analysis of canned centrifugal pump impeller and preventive maintenance measures for stable operation

屏蔽泵具有设计先进、结构紧凑、节能、高效、无泄漏、安装简单、维修方便的特点。随着人们对环境、安全意识的提高,在聚酯行业中屏蔽泵的使用已愈来愈普遍。但运行中一些因素的出现和变化会引起轴向力平衡的破坏,尤其是汽蚀问题。本文通过一起屏蔽泵叶轮端盖异常磨损的故障分析,提出确保屏蔽泵稳定运行的预防措施,并推广到本装置其他屏蔽泵,取得满意效果,提高了聚酯装置运行的稳定性、安全性、可靠性。

Canned centrifugal pump had advanced design, compact structure, energy saving, high efficiency, no leakage, simple installation and easy maintenance. With the improvement of awareness of environment and safety, the use of canned centrifugal pump were become more and more common in polyester industry. However, the change of some factors in operation will destroy the axial force balance, especially cavitation. Through the analysis of the abnormal wear failure of the end cover of a shielding pump impeller, the preventive maintenance measures for the stable operation of the canned centrifugal pump were put forward, all the canned centrifugal pump of the device were popularized, and satisfactory results were obtained. The stability, safety and reliability of polyester plant were improved.