期刊
PROCESSES
卷 9, 期 2, 页码 -出版社
MDPI
DOI: 10.3390/pr9020341
关键词
axial impeller; increase of power consumption; tank emptying
资金
- Ministry of Education, Youth and Sports of the Czech Republic: OP RDE [CZ.02.1.01/0.0/0.0/16_019/0000753]
This paper investigates the increase in mixing power during tank emptying with two axial impellers in operation. A significant increase in mixing power was observed when the liquid's free surface was above one of the impellers, exceeding the design power for a fully filled vessel. The study also explored the potential damage from high motor overload and provided correlation relationships for calculating power increase factors.
The paper presents research on the phenomenon of an increase in mixing power during the emptying of a tank with two 6-PBT45 degrees axial impellers in operation, located on a common shaft, pumping the liquid to the bottom of the mixing tank. A large increase in mixing power took place when the free surface of the liquid was just above the upper edge of one of the impellers (h(p)/D < 0.1). This increase was even more than 50% compared to the design power for a fully filled mixing vessel. Admittedly, high motor overload, while not very long, may damage it. The study investigated the instantaneous torques acting on the impeller shaft during the emptying of the tank and the velocity distributions in planes r-z. On their basis, the mechanism of the phenomenon observed was determined and correlation relationships were given that permitted the calculation of the numerical values of the power increase factors.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据