基于交变磁场的水管防垢试验研究

Experimental study on antiscale of pipes based on alternating magnetic field

利用麦克斯韦方程和边界条件,计算了交变磁场在水管中的场分布。采用交变磁场的磁感应强度作为参量,用试验的方法得到水管结垢量与磁感应强度之间的关系,从而提出了结垢磁感应强度阈值的概念。结果表明,水的硬度在小于700mg/L的范围内,不同的管径对应的结垢磁感应强度阈值相近。此外,还对水的参数如温度、硬度、流速与结垢量的关系进行了试验研究。

By using the Maxwell equations and border conditions, the distribution of magnetic field in the water pipe is computed. With the magnetic induction intensity as a parameter, the relation between the scaling amount and the magnetic inductioa intensity is obtained through the experimental method. Then the threshold of the magnetic induction intensity is proposed. According to the threshold, the current threshold of various pipes is calculated, which gives the references for the engineering design. The results show that on the condition that the water hardness is less than 700 mg/L, the magnetic induction intensity threshold for various pipes is almost same.In addition, the relations of the scaling amount with temperature, hardness, velocity are also investigated by the experiments.