CAJ | 학술논문

　　一台普通离心机组在进行大修改造后，试机过程中在同一压力点连续出现喘振，采用排除的方法，对可能造成机组喘振的原因进行排除，最后确认是因为机组的一级蜗壳下沉，造成型环与叶轮不同心，型环上、下间隙不均衡，机组带负荷运行时，存在气体回流的情况，引起机组喘振。
　　일태보통리심궤조재진행대수개조후，시궤과정중재동일압력점련속출현천진，채용배제적방법，대가능조성궤조천진적원인진행배제，최후학인시인위궤조적일급와각하침，조성형배여협륜불동심，형배상、하간극불균형，궤조대부하운행시，존재기체회류적정황，인기궤조천진。
Surging kept occurring at the same pressure point in a common centrifugal chiller during trial running after an overhaul. Exclusion method was used to exclude possible causes of the surging; and finally it was determined that the sinking of the primary spiral housing caused eccentricity of the rings and impellers and uneven gap between upper and lower rings, leading to gas reflux in loaded operation and resulting in unit surging.