| 陈殷婕,林天齐,董双双,杨诗涵,林子遗,杨威,李国占,张洪军.一种平衡孔板主要结构参数设计计算方法[J].电子测量与仪器学报,2024,38(8):218-226 |
| 一种平衡孔板主要结构参数设计计算方法 |
| Design calculation method for the main structural parameters of a balance orifice plate |
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| DOI： |
| 中文关键词: 平衡孔板 结构参数 设计方法 算例 多孔孔板 |
| 英文关键词:balance orifice plate structural parameter design method design example multi-hole plate |
| 基金项目:浙江省“尖兵领雁”研发攻关计划项目(2023C01247；2024C01258)、浙江省教育厅科研项目(Y202353658)资助 |
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| Author | Institution |
| Chen Yinjie | College of Metrology Measurement and Instrument, China Jiliang University, Hangzhou 310018, China |
| Lin Tianqi | Zhejiang Cangnan Instrument Group Co., Ltd., Wenzhou 325800, China |
| Dong Shuangshuang | The 52nd Research Institute of China Electronics Technology Group Corporation, Hangzhou 310012, China |
| Yang Shihan | College of Metrology Measurement and Instrument, China Jiliang University, Hangzhou 310018, China |
| Lin Ziyi | Zhejiang Cangnan Instrument Group Co., Ltd., Wenzhou 325800, China |
| Yang Wei | Zhejiang Cangnan Instrument Group Co., Ltd., Wenzhou 325800, China |
| Li Guozhan | College of Metrology Measurement and Instrument, China Jiliang University, Hangzhou 310018, China |
| Zhang Hongjun | College of Metrology Measurement and Instrument, China Jiliang University, Hangzhou 310018, China |
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| 中文摘要: |
| 针对多孔平衡孔板的设计需求，提出了一种结构参数设计计算的总体思路，并以含有中心孔和一圈函数孔的平衡孔板为例，详细阐述了具体设计方法和算例。首先，计算并确定孔板的壁厚和倒角；其次，根据永久压损比与等效开孔直径比（Δω/ΔP-β）的关系，以及压损系数与等效开孔直径比（ζ-β）的关系，通过迭代计算确定β数值；接着，基于管道直径计算确定圆心圆直径Db和平衡孔数量N；然后，根据等效开孔直径比的定义式和补充几何关系式，建立了关于中心孔直径d0和平衡孔直径db的方程组，并成功求解出d0和db的具体数值；最后，计算流出系数C，以此评估孔板的性能。文中以一款DN250平衡孔板的结构参数计算过程为例，对方法进行了展示。实验结果显示，设计得到的流出系数和满量程差压与标定数据偏差分别在5%和10%以内，满足工程设计需要，证明了本方法的实用性。 |
| 英文摘要: |
| To meet the requirements of the multi-hole balance orifice plate structure parameters design, a general idea for the design and calculation of structural parameters was proposed, and take the plate containing a central hole and one circle of function holes as an example to give the specific design method and calculation example. Firstly, determine the thickness and chamfer angle of the orifice plate. Secondly, according to the relationship between the permanent pressure loss ratio and the equivalent hole opening diameter ratio (Δω/ΔP-β), and the relationship between the pressure loss coefficient and the equivalent hole opening diameter ratio (ζ-β), the β value is determined by iterative calculation. Then, determine the diameter of the hole opening circle Db and the hole number N, according to the pipe diameter. After that, according to the equivalent hole opening diameter ratio definition and supplementary geometric relationship, establish an equation group about the central hole diameter d0 and the equilibrium hole diameter db, then solving the equation group to obtain values of them. Finally, calculate the outflow coefficient. The general idea, process of the method and a design calculation example are given in the paper. In this paper, the structure parameter calculation process of a DN250 balance orifice plate is taken as an example to show this method. The results show that deviations between the calculated and the calibrated data of the discharge coefficient and full range differential pressure are within 5% and 10%, respectively, which meet the needs of engineering design. The example proves the practicability of this method. |
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