华电技术 ›› 2018, Vol. 40 ›› Issue (1): 13-15.

• 研究与开发 • 上一篇    下一篇

BS-I型测速管的应用及特性分析

  

  1. 1.中国华电集团科学技术研究总院有限公司,北京〓100070; 2.中国华电集团公司湖南分公司,长沙〓410004;3.湖南华电长沙发电有限公司,长沙〓410203
  • 出版日期:2018-01-25 发布日期:2018-02-07

Applications and characteristics of BS-I pitot tube

  1. 1.China Huadian Science and Technology Institute, Beijing 100070, China;2.China Huadian Corporation Hunan Branch,Changsha 410004,China;3.Hunan Huadian Changsha  Power Generation Company Limited,Changsha 410203,China
  • Online:2018-01-25 Published:2018-02-07

摘要:

BS-I型测速管是电力行业标准推荐用于直接测量风粉管道内气流速度的风速测量装置,测量时不需进行煤粉质量浓度修正、不易积粉,实际测试表明,测量性能和精度符合预期。进一步通过计算流体力学(CFD)对该型测速管的测量特性进行了数值计算研究,给出了速度系数受测量时的放置姿态(旋转、倾斜)和总压管积粉程度的影响规律。研究结果表明,BS-I型测速管的速度系数对前述因素不敏感,建议在制粉系统性能测试、测量中推广使用。

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Abstract:

It is recommended by a standards of electric power that BS-I pitot tube is a measuring device that can be directly used in gas velocity in pulverized coal pipes. The correction of measuring based on the mass concentration of coal powders is not required and it is not easy to deposit ash. Insitu test on the BS-I pitot tube indicated that the measurement performance and accuracy are in line with expectations. Numerical computations with CFD were then conducted to investigate the BS-I pitot tube’s characters and the effect of relative attitude (rotation, inclination) and the degree of main pressure pipe to the velocity coefficient under measurement. The results showed that the measuring accuracy of BS-I pitot tube was insensitive to these factors.

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