| 引用本文: | 朱 梅,范 舟,李晓乐,等.等截面双作用柱塞泵的仿真与试验研究[J].灌溉排水学报,2025,44(1):50-58. |
| ZHU Mei,FAN Zhou,LI Xiaole,et al.等截面双作用柱塞泵的仿真与试验研究[J].灌溉排水学报,2025,44(1):50-58. |
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| 摘要: |
| 【目的】为提升水肥一体化机施肥泵的机械效率，设计了一种等截面双作用柱塞泵，通过仿真分析和对比试验结合的方法验证了新式柱塞泵的稳定性与精准性。【方法】运用Fluent软件对柱塞泵模型内部流道进行仿真，验证了设备结构的合理性。开展柱塞泵与文丘里施肥泵的对比试验，测试进排水肥可溶性离子浓度（EC值）和泵的机械效率，分析等截面双作用柱塞泵应用于水肥一体化机组的实际工作性能。【结果】进排水肥溶液EC值平均值方差仅约为48.5，同文丘里施肥器试验数据的平均值方差814.8相比，极限值波动减少约54%。【结论】试验工况范围内，等截面双作用柱塞泵对比文丘里施肥泵的最大机械效率提升点出现在0.30 MPa时，约提升56%。研究为提升水肥一体化机工作效率，增强水肥一体化机市场适应性提供理论和试验参考。 |
| 关键词: 柱塞泵；Fluent仿真；机械效率；施肥器；注肥 |
| DOI：10.13522/j.cnki.ggps.2023506 |
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| Numerical and experimental analysis of double-acting plunger pump with constant cross section |
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ZHU Mei, FAN Zhou, LI Xiaole, LIU Jingzhe, ZHOU Di
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1. School of Engineering, Anhui Agricultural University, Hefei 230036, China;
2. WangJiaBa Hydrological Station, Anhui Hydrological Bureau, Fuyang 236312, China;
3. Jiangsu Yuanhan Architectural Design Co., Ltd, Changzhou 213000, China
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| Abstract: |
| 【Objective】Integrated irrigation and fertilization has been increasingly used as a water- and fertilizer-saving technology in modern agriculture. However, conventional equipment often suffers from low mechanical efficiency and poor synchronization of water and fertilizer application, limiting its effectiveness. To address these limitations, we designed and evaluated a high-efficiency fertilization pump for integration into irrigation systems.【Method】The device was designed based on the equal-section double-acting pump. We analysed the internal flow characteristics in the pump and established a numerical model to simulate fertiliser flow in the inlet and outlet channels, as well as in the chamber. The k-epsilon turbulence model with enhanced wall treatment wall function was used to increase modelling accuracy. All simulations were conducted using the Fluent software. We first verified that the simulated results met the design requirements for continuous fertiliser flow in the inlet and outlet channels and uniformity of fertilizer application, and then conducted a comparative experiment using the plunger pump and the traditional Venturi fertilizer pump to compare the electric conductivity (EC) of solution in the inlet and outlet channels, as well as the mechanical efficiency of the two pumps.【Result】The simulated results indicated that the new device achieved continuous and uniform fertilizer application. The experimental results showed that the variance in the EC of the solution in the inlet and outlet of the new device was less than 48.5, a significant improvement compared to the variance of 814.8 in the Venturi pump. Furthermore, the new device reduced the fluctuation by 54%; the mechanical efficiency of the new device at 0.30 MPa of working pressure was 56% higher than that of the Venturi pump.【Conclusion】The equal-section double-acting plunger pump demonstrated significant improvements in mechanical efficiency, precise fertilizer application, and seamless integration into water-fertilizer systems. These findings provide valuable insights for optimizing fertiliser application equipment, improving structural design and commercial applications of integrated fertilisation and irrigation apparatus in modern agriculture. |
| Key words: plunger pump; Fluent simulation; mechanical efficiency; fertilizer applicator; fertilization |
