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搅拌罐中的粘度测量
2013-05-31 15:27:40 嘉兆科技（深圳）有限公司
Torque Talk March 2013
Viscosity Measurement in Mixer Tanks
搅拌罐中的粘度测量
Wikipedia：“油液的粘度可以反映受到剪切应力或拉伸压力时变形的阻力。对于液体，它相当于“浓度”的概念。例如，蜂蜜的粘度比水的高。”
Reference, Wikipedia: "The viscosity of a fluid is a measure of its resistance to gradual deformation by shear stress or tensile stress. For liquids, it corresponds to the informal notion of ‘thickness‘. For example, honey has a higher viscosity than water.
在大型搅拌设备中，罐中的阻力，可以通过搅拌器转轴的扭矩来测量。
将Binsfeld Engineering公司TorqueTrak仪器安装在搅拌器的转轴上，简单又方便。轴上的扭矩测量，直接关系到搅拌罐中液体或混合物的粘度（负载）。假设轴的转速不变，材料的粘度增加，扭矩信号也会成比例增加。在某些加工过程中，一开始粘度非常高，搅散后材料粘度显著降低。扭矩测量不会呈现单位为粘度的数据，如帕•秒（Pa•s），但是可以通过扭矩数值反映出是否达到了所需的粘度。
In vertical industrial mixer equipment, that resistance in the tank can be measured using the Binsfeld Engineering TorqueTrak instruments installed on the rotating mixer shaft. The torque measurement on the shaft is directly related to the viscosity of the fluid or mixture in the tank (the workload.) As viscosity of the product increases, so does the torque signal proportionally, assuming constant shaft speed. In some processes, the viscosity starts very high and then decreases dramatically as dispersion takes place. The torque measurement will not present data in units of viscosity, such as pascal-seconds(Pa•s), rather it will be used to indicate when a desired viscosity has been achieved.
首先，我得感谢在Wikipedia的员工们。他们通过查阅Web百科全书，找到一个可行的测试办法，出色地完成了工作。
First of all, my appreciation goes out to the folks at Wikipedia. They have done a wonderful job with their web-based encyclopedia.
如何测量罐内液体或混合物的阻力？直接测量搅拌器轴上的转矩就可以了。这是一个真实的故事，直观地描述罐内负载的变化。
How can you measure the resistance of a fluid or mixture inside a tank? Measure the torque on the mixer shaft. That is a true representation of the workload inside the tank.
如果您有好的应用或成功案例是涉及到TorqueTrak仪器，并愿意与大家分享，请联系我们。
If you have a good application or success story involving the TorqueTrak instruments that you would like to share in this newsletter, please send it to me for consideration.
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