基于光电测量的煤泥水自动加药系统研究

为实现煤泥水处理中自动添加絮凝剂,研制了一套实验室使用的煤泥水自动加药设备。通过试验验证设备的自动加药性能,求出了设备的传递函数,并通过仿真软件对传递函数进行了模拟仿真,将仿真结果与试验结果进行比较,判断设备的可行性。结果表明,试验中不同煤泥水浓度在最佳加药量的情况下,沉降速度为10~12 mm/s。仿真计算时,药剂达到最佳用量时,沉降速度稳定在10mm/s,试验结果与仿真结果基本一致。且出现干扰时,系统能够自动调整并趋于稳定。该自动加药系统引入了光电测量技术,即通过光电传感器实时测量煤泥水的沉降速度,并用前馈与反馈相结合的控制方案,解决了传统煤泥水自动加药系统滞后性的问题。 In order to achieve automatic adding flocculant in the coal slurry processing,the equipment of coal slurry automatic dosing used in the laboratory was developed. The transfer function of the experimental equipment was obtained through a series of exploratory experiments,and the transfer function was simulated by the simulation software,and they were compared with the experimental results to determine the feasibility of the device.Results show that the settling velocity is 10-12 mm / s in different concentration of coal slurry under the best dosage condition.In the simulation,the settling velocity is stable at 10 mm / s when the agent reaches the optimal dosage. The experimental results are basically consistent with the simulation results,and further,once the interference occurs,the system can automatically adjust and stabilize.The automatic dosing system has introduced the photoelectric measurement technology,which measures the settling velocity with the photoelectric sensor and has solved the lag problem of traditional automatic dosing system with the combination of feed forward and feedback control scheme