JOURNAL OF ISOTOPES

Previous Articles     Next Articles

Preparation of Radioactive Source Used in Multiphase Flow Meter

LIU Zhi-cheng;WU Yong-jian   

  1. High Technology Atomic CO., LTD., Beijing 102413, China
  • Online:2016-08-20 Published:2016-08-10

多相流量计用源的研制

刘志成;邬永建   

  1. 原子高科股份有限公司,北京102413

Abstract:

Requirement for the radioactive source used in multiphase flow meter is that the overall shape dimensions must be fixed and the the maximum output rate of photons must be improved to 1.5 times more than the former. As the former preparation process can not satisfy the requirement, the composition of surface glaze was changed in order to reduce the self-absorption and improve the photons’ output rate, the ratio between surface glaze and Am-241 oxidizes was optimized, the input of radioactive material was increased,but the size of certain shape and active zone was fixed.The results showed that various kinds of technical index all satisfied demands of international standard and the feedback was good in sevice.

Key words: radioactive source, multiphase flow meter, surface glaze, high activity, photons&rsquo, output rate

摘要:

油田多相流量计用源要求外形尺寸不变、光子通量输出率提高1.5倍。鉴于原制备工艺不能满足生产要求,本研究在不更改放射源外形和活性区尺寸的情况下,通过改变面釉成份,降低自吸收,提高光子通量输出率,确定原料面釉最佳掺和比,增加装料量等方法,成功研制了油田多相流量计用源。经检测该源各项技术指标均满足国标相关要求。现场使用,反馈良好。

关键词: 多相流量计用源, 面釉配比, 高活度, 光子通量输出率