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美国英格索兰(Ingersoll-Rand)公司在“压缩空气”(Compressed Air)杂志1985年第五期宣称:该公司在离心泵中采用了稳定器的措施,从而解决了水泵在低流量范围内运行时,由于流体分离和回流旋涡造成的流动不稳定现象。这种流动不稳定现象使泵产生振动、噪声、效率降低甚至破坏泵的正常工作。离心泵工作轮的叶片角度是在设计流量下选取的,这时泵可以得到最佳的效率。当在低流量时,流体的流动角度偏离工作轮的叶片角度,这样就产生流体的不稳定现象,进口叶片处流动流体的分离和回流,使局部
Ingersoll-Rand Inc. in the fifth issue of Compressed Air magazine (1985) claimed that the company adopted a stabilizer in its centrifugal pump to address the pump’s low flow range In operation, flow instability due to fluid separation and backwash vortex. This flow instability causes the pump to vibrate, reduce noise, degrade efficiency and even undermine the normal operation of the pump. Centrifugal pump working wheel blade angle is selected at the design flow, then the pump can get the best efficiency. At low flow rates, the flow angle of the fluid deviates from the blade angle of the working wheel, resulting in instability of the fluid, separation and return of the flowing fluid at the inlet blade,