摘要
本文提出一种新的矿井总风量自动调节系统。此系统系用一种电容变送器,将风量变送为电流和电压,根据风量的测量结果和给定值,微机发出控制信号,可控硅串级调速系统控制绕线式异步电动机的转速,主扇风机的转速,随着绕线式异步电动机转速的变化而变化,扇风机转速的变化导致了风量的调节。此系统与通过风门来调节风量的传统调节方法相比,不仅实现了风量的自动调节,而且可节约电能和降低噪音。
This paper suggests a new automatic regulation system for the total rate of airflow in mines.In the system a kind of capacity converter is used to sonvert the rate of airflow into electric current and voltage.Basing on the results measured and the given rate of airflow, a micro-computer gives a control signal to SCR cascade control system, and it controls the rotating speed of a wound rotor asynchronous motor The rotating speed of the main fan varies with the rotating speed of the motor.The change of the fan speed results in a corresponding regulation of the rate of airflow.Compared with the traditional regulation of airflow through wind valve,not only the automatic regulation can be carried out,but also the electric energy can be saved, and the noice can be reduced considerably.
关键词
矿井
总风量
微机控制
节能效果
total rate of airflow in mines
micro-computer
wound rotor asynchronous system
energy saving
