基于ADAMS的钢管漏磁检测螺旋推进运动的计算分析

ADAMS-based Computational Analysis of Spiral Forward Movement in Steel Pipe Flux Leakage Detection Process

在钢管螺旋推进漏磁检测中,针对钢管与其驱动对辊轮的接触作用点难以寻找而导致不易通过几何求解法获得其螺距的问题,采用ADAMS运动仿真软件对钢管螺旋推进运动进行了计算分析,并组建试验装置对仿真计算结果进行了验证,对钢管螺旋运动时的平稳性进行了分析;针对直接倒角处理过的对辊轮在驱动钢管时存在较大机械波动的问题,优化处理了对辊轮轮廓面。该方法可较快且比较精确地计算出钢管螺旋推进运动的螺距;另外,对辊轮轮廓面优化处理后,降低了钢管机械波动所产生的磁噪声,提高了漏磁探伤的信噪比。

There exist a big problem related to the process of flux leakage detection with spiral forward movement of the steel pipe,i.e.,it is so difficult to identify the contact point between the moving pipe and the driving double rollers,which in turn leads to the difficulty finding out the pitch via the geometric solution method. The movement simulation software of ADAMS is used to calculate and analyze the spiral forward movement of the steel pipe. And then relevant testing apparatus is built up to verify the result of the simulation,and get the steadiness of the pipe movement analyzed. To fix the problem of obvious mechanically-fluctuated movement of the pipe driven by the double rollers as directly beveled,the roller profile is optimized. With such a solution,the pitch of the pipe’s forward spiral movement is identified via rather quick and accurate calculation. Moreover,thanks to the optimized roller profile,the magnetic noise as caused by the said mechanical fluctuation is reduced,and thus,the signal-to-noise ratio produced with the flux leakage detection operation is increased.