透射法测量输油管道油垢厚度响应关系的蒙特卡罗计算

Calculation of Response Relationship Between Pipeline Grease Stain Thickness and Ray Decay Rate With Monte-Carlo Method

为设计1种基于射线透射原理的石油输送管道油垢厚度无损检测仪，利用蒙特卡罗方法分别计算中子、γ射线在不同油垢厚度输油管道中的穿透率，建立油垢厚度与射线计数之间的响应关系。结果表明，中子、γ射线用于管道内油垢厚度的无损检测是可行的，且中子检测具有更好的检测灵敏度。

pipel grease stal In order to design a grease stain thickness non-destructive detector for petroine, the decay rate of neutron and γ-ray in different petroleum pipeline of n thickness were calculated with Monte-Carlo method. The response relationship between particle （neutron or γ） and grease stain thickness was found. The result shows that both neutron or γ-ray can be used to detect grease stain thickness of petroleum pipeline and neutron is more sensitive than γ-ray.