Study on quasi-S type Pitot tube and its measurement characteristics

SUN Zhi-qiang1; ZHENG Jian-wu2; ZHANG Hong-jian1; ZHOU Jie-min2

doi:10.13873/j.1000-97872007.05.005

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Study on quasi-S type Pitot tube and its measurement characteristics

更新时间：2025-09-11

- Study on quasi-S type Pitot tube and its measurement characteristics
- Issue 5, Pages: 40-42(2007)
- 作者机构：
  
  1. 浙江大学工业控制技术国家重点实验室
  2. 中南大学能源科学与工程学院
  3. 中南大学能源科学与工程学院,浙江,杭州,310027
  4. ,湖南,长沙,410083
- 作者简介：
- 基金信息：
- DOI：10.13873/j.1000-97872007.05.005
  CLC： TH815
- Published：2007
- 稿件说明：
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[1]孙志强,郑剑武,张宏建,周孑民.类S型皮托管及其测量特性研究[J].传感器与微系统,2007(05):40-42.

SUN Zhi-qiang1, ZHENG Jian-wu2, ZHANG Hong-jian1, et al. Study on quasi-S type Pitot tube and its measurement characteristics[J]. 2007, (5): 40-42.
[1]孙志强,郑剑武,张宏建,周孑民.类S型皮托管及其测量特性研究[J].传感器与微系统,2007(05):40-42. DOI： 10.13873/j.1000-97872007.05.005.

SUN Zhi-qiang1, ZHENG Jian-wu2, ZHANG Hong-jian1, et al. Study on quasi-S type Pitot tube and its measurement characteristics[J]. 2007, (5): 40-42. DOI： 10.13873/j.1000-97872007.05.005.

摘要

S型皮托管是工业过程中测量含尘气体最为常用的流速测量装置之一

但由于取压孔开口较大

对其测量会有一定的影响。为了减小取压孔引起的误差

并保持S型皮托管的优点

研究了一种新型的皮托管——类S型皮托管的测量特性。首先

根据对置有皮托管的流场数值模拟的结果

确定了较优管型的开口斜度;其次

在流速范围为15

0m/s的DN100风管中对类S型皮托管进行了实流标定实验。结果表明:在实验范围内

类S型皮托管的校准系数都比较稳定

并非常接近1

其相对误差为±4%

能够满足大多数工业现场介质流速测量的要求。

Abstract

The S type Pitot tube is one of the most widely used meters for dust contained gas velocity measurements in the industrial field

but the large pressure ports it has have influence on its measurement performance.A new kind of S type Pitot tube

named quasi-S type Pitot tube

is studied in order to decrease the effect caused by pressure ports but maintain its merits.Based on the findings from numerical simulations for the flow field of quasi-S type Pitot tube

a suitable port angle is determined for the better configuration.Then air experiments are carried out in a DN100 pipe with the flow velocity ranged from 15

0 m/s.The results show that the calibration coefficients of the quasi-S type Pitot tube is quite stable and very close to 1

and its relative errors

are ±4 %

which can satisfy the fluid flow measurement in most industrial applications.

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references

毕托管流量计的结构和特性分析(英文) [J]. 侯娟. 新疆大学学报(自然科学版) . 2005(02)

含尘气流测速管的研究与开发 [J]. 张澄,赵秀英. 通风除尘 . 1996(04)

JS型测速管的研究 [J]. 张澄,赵秀英. 同济大学学报(热能工程版) . 1995(06)

流量测量技术及仪表[M]. 机械工业出版社 , 梁国伟,蔡武昌主编, 2002

锅炉燃烧试验研究方法及测量技术[M]. 水利电力出版社 , 岑可法主编, 1987

Calculation of the Pitot tube correction factor for Newtonian and non-Newtonian fluids [J] . S.Gh. Etemad,J. Thibault,S.H. Hashemabadi. ISA Transactions . 2003 (4)

A comparative analysis of correction method for total-head probes in large velocity-gradient flows [J] . M Wysocki,S Drobniak. Journal of Wind Engineering & Industrial Aerodynamics . 2001 (1)

Displacement effect in Pitot tube measurements in shear flows [J] . K.G. Ranga Raju,P.D. Porey,G.L. Asawa. Journal of Wind Engineering & Industrial Aerodynamics . 1997 (2)

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