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论文:2020,Vol:38,Issue(4):792-796 |
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引用本文： |
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王筱庐, 陈玉春, 蒋宇翔, 张凯. 小型片式层流流量计研究[J]. 西北工业大学学报 |
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WANG Xiaolu, CHEN Yuchun, JIANG Yuxiang, ZHANG Kai. Research of Small Sheet-Type Laminar Flow Meter[J]. Northwestern polytechnical university |
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| 小型片式层流流量计研究 |
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| 王筱庐, 陈玉春, 蒋宇翔, 张凯 |
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| 西北工业大学 动力与能源学院, 陕西 西安 710072 |
| 摘要: |
| 为解决片式LFM在设计上存在的泄漏、变形等问题，提出了一种小型片式LFM构型。该小型片式LFM将引压孔设置在层流流道中间，从充分发展的层流中引压，Remax·de/l=5.81，远大于传统LFM设计时要求的2~2.5。试验结果显示，小型片式LFM的线性度ξL可达0.81%，满足精度1%所需，说明此设计可有效克服突扩突缩带来的非线性影响。此外，试验流量在设计最大流量20%以上时，压差的计算误差可以控制在5.42%以下。 |
| 关键词:
层流流量计
片式
突扩突缩
线性度
精度
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| Research of Small Sheet-Type Laminar Flow Meter |
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| WANG Xiaolu, CHEN Yuchun, JIANG Yuxiang, ZHANG Kai |
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| School of Power and Energy, Northwestern Polytechnical University, Xi'an 710072, China |
| Abstract: |
| A small sheet-type LFM is proposed to solve the problems of leakage and deformation in the design of traditional sheet-type LFM. The pressure tap is set in the middle of the laminar flow channel to extract pressure from the fully developed laminar flow. The design value Remax·de/l is 5.81, which is much higher than the 2~2.5 required by the traditional design. Experimental results show that the linearity factor ξL of small sheet-type LFM can reach 0.81% and the accuracy is up to 1%, which shows that the present design can effectively overcome the nonlinear effects caused by sudden expansion and contraction. In addition, when the flow rate is above 20% designed maximum valve, the calculation error of pressure drop can be controlled below 5.42%. |
| Key words:
laminar flow meter
sheet-type
sudden expansion and contraction
linearity
accuracy
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| 收稿日期: 2019-10-14
修回日期:
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| DOI: 10.1051/jnwpu/20203840792 |
| 通讯作者:
Email： |
| 作者简介: 王筱庐(1991-),西北工业大学博士研究生,主要从事流体测控研究。
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