CAJ | 학술논문

基于有限元分析软件ANSYS对一种具有特殊结构形式的离心泵压水室进行了模态计算分析，获得了无预应力和有预应力两种状态下压水室的前6阶固有频率和模态振型。分析结果表明：侧壁式压水室的各阶固有频率均远离主要激励频率，可有效避免共振的发生；压水室的变形主要发生在进口法兰端和扩散段，可相应增加两处的刚度以优化压水室的振动特性；有预应力状态下压水室的各阶固有频率较无预应力状态下出现约1％的增幅，2种状态下压水室的变形方式基本一致。分析结果为带有侧壁式压水室离心泵的安全运行和结构优化提供了一定的理论指导。
기우유한원분석연건ANSYS대일충구유특수결구형식적리심빙압수실진행료모태계산분석，획득료무예응력화유예응력량충상태하압수실적전6계고유빈솔화모태진형。분석결과표명：측벽식압수실적각계고유빈솔균원리주요격려빈솔，가유효피면공진적발생；압수실적변형주요발생재진구법란단화확산단，가상응증가량처적강도이우화압수실적진동특성；유예응력상태하압수실적각계고유빈솔교무예응력상태하출현약1％적증폭，2충상태하압수실적변형방식기본일치。분석결과위대유측벽식압수실리심빙적안전운행화결구우화제공료일정적이론지도。
Modal analysis of tilt volute with special structure in a centrifugal pump was carried out by finite element analysis software ANSYS.The first 6 order natural frequency and modal shape of tilt volute in prestressed and none prestressed state was obtained respectively .The results show that each order natural frequency of tilt volute far away from main exciting frequency , it is beneficial to avoid the occurrence of resonance effectively .The primary deformation is located in suction flange and diffuser of vo-lute and their rigidity should be increased to optimize the vibration characteristic .The value of each order natural frequency of tilt volute will raise about 1%in prestressed state than which in none prestressed state and the primary deformation in this two state is essentially consistent .The analysis results will provide theoretical basis for safety operation and structural optimization of cen -trifugal pump with tilt volute .