用γ射线透射幅度谱研究管道油垢厚度的响应

Study on response of grease stain thickness in petroleum pipelineusing amplitude spectrum of transmitted γ-ray

用γ射线透射幅度谱研究石油管道内油垢厚度响应的模拟实验装置由137Cs γ射线的准直束与准直的NaI(Tl)探测器组成。模拟装置使用了BH1224型多道谱仪,油垢样品来自新疆。实验结果表明:在响应的对数与油垢厚度间存在很好的线性关系;油垢的测量精度为0.19cm。

The response of the grease stain thickness in petroleum pipelines using the amplitude spectrum of the transmitted γ-ray was studied. The simulated experimental device consists of a collimating beam of 137Cs γ-ray and a collimating NaI(Tl)scintillation detector. The BH1224 multichannel spectrometer was used in the simulated experiment. The grease stain sample was from Xinjiang. The experimental result exhibited a very good linear relationship between the logarithm of the response and the grease stain thickness. The measuring accuracy of the grease stain thickness was 0.19 cm.