摘要
多孔孔板作为节流元件,其结构设计参数是影响水力空化效果的重要因素。在等效直径比一定的情况下,孔板的孔数、中心孔、布孔级数和特殊情况对管路总阻力系数将会产生重大影响。研究得出:实验过程中管路流体已经进入高度紊流状态,在此管路情况下,单个孔板的阻力系数变化很小,不同孔板的阻力系数与该孔板的结构参数有很大的关系。孔数和布孔级数的增加,中心孔以及均匀布孔都有利于管路总阻力系数的减小,特殊情况尽量避免。
Multi-hole orifice plate （MOP） is mostly used as a throttle element. The structure design parameters of MOP do have important effect on hydraulic cavitation. Based on fixed equivalent diameter ratio, this article has made main study on how the number of holes, the center hole and the special condition affect the pipe line overall resistance coefficient. Results show that the resistance coefficient of single plate has little variation in the high turbulent state under different experimental conditions. The structure parameters play a remarkable rule to its resistance coefficient. Increasing the number of holes, and the stages of hole distribution, center hole and even distribution holes all can decrease the resistance coefficient. Special condition should be avoided. [ Ch ,7 fig. 1 tab. 11 ref. ]
出处
《轻工机械》
CAS
2010年第1期17-20,24,共5页
Light Industry Machinery
关键词
化工机械
多孔孔板
水力空化
阻力系数
体积流量
chemical machinery
multi-hole orifice plate
hydraulic cavitation
resistance coefficient
flow rate
