一种屏蔽式电涡流传感器的研制

Design of a shielded eddy current sensor

摘要:

某构件为多层窄间隙结构的容器装置，为测试在具有一定压力的高速流场中流体诱发的内层板振动情况，基于电涡流原理设计了一种屏蔽式电涡流传感器，完成了屏蔽式电涡流传感器的探头线圈参数和探头壳体结构参数的优化设计、装配调试和第三方校准。试验结果表明：研制的屏蔽式电涡流传感器，在不干扰“流场”，对装置结构不构成影响的前提下，实现了板间窄间隙振动的测试，传感器可靠有效。

Abstract:

A certain component is a kind of multilayer narrow gap container. To test the vibration of slab induced by flowing water at high speed in this component, a shielded eddy current sensor is designed based on the eddy current principle. The coil parameters of the probe and the structure parameters of probe’s shell are optimized for the proposed shielded eddy current sensor. The assembly and debugging, as well as the calibration of the third party, are performed. The test results show that: the proposed shielded eddy current sensor, which has no interference to the flow field and no breakage to the structure of the device, can realize the vibration test of slabs with narrow gap reliablely and efficiently.