基于折光法的乳化液浓度检测技术研究

发布时间：2018-10-09 19:14

【摘要】：乳化液主要作为液压支架的传动介质，在现代煤矿综采工作面中起着举足轻重的作用，，被称为煤矿支护设备的血液。乳化液的浓度适中与否直接决定着液压系统各元件的使用寿命和生产效率。比如说：浓度过低，乳化液起不到应有的润滑、防锈等功能；浓度过高，增加了乳化油的用量从而增加的生产成本。因此，现在急需一套可行的有效的乳化液自动配比系统来控制乳化液的浓度满足实际工作的需求。 乳化液配比系统的发展经历了从人工地面混合到手动配液再到自动配比这三个阶段。其中，人工地面混合和手动配液这两种方式的工作量大，而且配制乳化液的精度也不高，满足不了实际工作的要求。配制浓度精确的乳化液不仅需要精确的检测正在工作的乳化液的浓度，还需一套可以精确、快速地控制乳化液浓度的系统。因此，在实际生产中需要一套可以精确检测乳化液浓度和先进的控制系统相结合的自动配比系统。 文章对乳化液的的特性和乳化液的配制机理进行了简单的说明，尤其从乳化液单个液滴的形成和乳化液机理两个方面说明了乳化液的形成,通过对乳化液形成过程的研究指导了乳化液的配制。文章搭建了阿贝折射仪—超级恒温槽的实验台，并研究了浓度为0～10%的乳化液在25～60℃温度范围内的折射率，得出了浓度、温度和折射率三者之间的关系曲线和经验公式。 在对检测乳化液浓度、温度和折射率研究的基础上，文章基于Modbus通信协议实现了GND15型乳化液浓度传感器和上位机的通信，对传感器进行标定，并对标定结果进行了验证。经验证可得：4.9337%和6.35285%乳化液的相对误差分别为1.34%和1.13%。 文章设计了一套乳化液自动配比系统，系统采用GND15型乳化液浓度传感器检测乳化液浓度，PLC控制系统处理由各个传感器反馈回的数值，并发出指令指导执行机构的的动作。该系统可以实时检测乳化液浓度，并快速的做出相对应的调整动作，实现乳化液配比的全自动化。
[Abstract]:As the driving medium of hydraulic support, emulsion plays an important role in the modern coal mine fully mechanized mining face, and is called the blood of coal mine support equipment. Whether the concentration of emulsion is moderate or not directly determines the service life and production efficiency of each component of hydraulic system. For example, if the concentration is too low, the emulsion will not have the proper functions of lubrication and rust prevention; too high concentration will increase the amount of emulsified oil and thus increase the production cost. Therefore, there is an urgent need for a feasible and effective emulsion automatic proportioning system to control the emulsion concentration to meet the practical requirements. The development of emulsion blending system has experienced three stages: artificial ground mixing, manual distribution and automatic blending. Among them, the manual ground mixing and manual distribution are the two ways of heavy workload, and the precision of emulsion preparation is not high, which can not meet the practical requirements. The preparation of emulsion with accurate concentration requires not only the accurate detection of the concentration of the working emulsion, but also a system that can accurately and quickly control the concentration of the emulsion. Therefore, an automatic proportioning system which can accurately detect the concentration of emulsion and the advanced control system is needed in actual production. The characteristics of the emulsion and the preparation mechanism of the emulsion are simply explained in this paper, especially the formation of the emulsion from two aspects: the formation of the single droplet of the emulsion and the mechanism of the emulsion. The preparation of emulsion was guided by the study of emulsion formation process. In this paper, the experimental bench of Abbe refractometer-super constant temperature tank is set up, and the refractive index of emulsion with concentration of 0 ~ 10% is studied in the temperature range of 25 ~ 60 鈩

本文编号：2260471