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计量学报  2024, Vol. 45 Issue (6): 864-872    DOI: 10.3969/j.issn.1000-1158.2024.06.12
  力学计量 本期目录 | 过刊浏览 | 高级检索 |
S型皮托管对向和非对向测量方法准确度实验研究
张乐垚1,2,3,张亮2,3,郭素娜1,郭虎林3,鲁贵祥3,孔令彩1,2,3
1.河北大学质量技术监督学院,河北保定071002
2.中国计量科学研究院,北京100029
3.郑州计量先进技术研究院,郑州,河南450001
Experimental Study on Measurement Accuracy of Nulling and Non-nulling S-type Pitot Tubes
ZHANG Leyao1,2,3,ZHANG Liang2,3,GUO Suna1,GUO Hulin3,LU Guixiang3,KONG Lingcai1,2,3
1.College of Quality and Technical Supervision,Hebei University,Baoding,Hebei 071002,China
2. National Institute of Metrology,Beijing 100029,China
3. Zhengzhou Institute of Advanced Metrology Technology,Zhengzhou,Henan 450001,China
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摘要 S型皮托管的对向和非对向测量方法准确度在不同工况下有较大差异。通过风洞实流实验对风速、流速攻角和结构参数对S型皮托管对向和非对向测量方法准确度的影响进行了研究。结果表明:风速由5m/s变化至30m/s时,在不同流速攻角下S型皮托管对向和非对向测量准确度最大差异超过10%;对向和非对向测量中静压孔的压力变化是皮托管在较大流速攻角下造成测量误差的主因;外径较小、总静压孔距较大、测量端弯曲角度在15°至30°间、取压孔内径更小的S型皮托管在对向和非对向测量中都有更高的测量准确度;俯仰角取正值时对向测量准确度全面优于非对向测量,在俯仰角和偏航角同为45°时测量准确度差异达到最大值,大于70%。
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张乐垚
张亮
郭素娜
郭虎林
鲁贵祥
孔令彩
关键词 流量测量;S型皮托管;烟道流量;对向测量;非对向测量测量准确度    
Abstract:The accuracy of the nulling and non-nulling of the S-type pitot tube is quite different under different working conditions. The influence of wind velocity,velocity angle of attack and structural parameters on the accuracy of nulling and non-nulling of the S-type pitot tube is studied through the wind tunnel. The results show that when the wind velocity changes from 5 to 30m/s, the maximum difference in the measurement accuracy of pitot tube is more than 10% in nulling and non-nulling at different velocity angles of attack. The pressure change of the static pressure hole in nulling and non-nulling is the main reason for the measurement error of the pitot tube at large velocity angles of attack. The pitot tube with smaller outer diameter, larger distance between total and static pressure hole, bending angle of measuring end between 15° and 30°, and smaller inner diameter of pressure tapping has higher measurement accuracy in both nulling and non-nulling.When the pitch angle is positive,the measurement accuracy of nulling is better than that of non-nulling. When the pitch angle and yaw angle are both 45°, the difference of measurement accuracy reaches the maximum, which is greater than 70%.
Key wordsflow measurement    S-type pitot tube    stack flowrate    nulling;non-nulling;measurement accuracy
收稿日期: 2022-12-12      发布日期: 2024-06-06
PACS:  TB937  
基金资助:中国计量科学研究院基本科研业务费重点领域(AKYZD2207)
通讯作者: 张亮(1982-),男,北京市人,中国计量科学研究院副研究员,主要从事污染物排放计量方面研究。Email:zhangliang@nim.ac.cn      E-mail: zhangliang@nim.ac.cn
作者简介: 张乐垚(1997-),男,河南郑州人,河北大学与中国计量科学研究院联合培养硕士研究生,主要研究方向为烟道气体流量计量。Email:465723013@qq.com
引用本文:   
张乐垚,张亮,郭素娜,郭虎林,鲁贵祥,孔令彩. S型皮托管对向和非对向测量方法准确度实验研究[J]. 计量学报, 2024, 45(6): 864-872.
ZHANG Leyao,ZHANG Liang,GUO Suna,GUO Hulin,LU Guixiang,KONG Lingcai. Experimental Study on Measurement Accuracy of Nulling and Non-nulling S-type Pitot Tubes. Acta Metrologica Sinica, 2024, 45(6): 864-872.
链接本文:  
http://jlxb.china-csm.org:81/Jwk_jlxb/CN/10.3969/j.issn.1000-1158.2024.06.12     或     http://jlxb.china-csm.org:81/Jwk_jlxb/CN/Y2024/V45/I6/864
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