In today’s increasingly serious energy issues, it is particularly important to carry out research on energy conservation and emission reduction. Pump as turbine (PAT) is a kind of energy-recovery equipment, which can recover the residual energy in the technological fields of fertilizer, water distribution network,^1–3 water desalination, and petro-chemical industry,⁴ as well as many other processes.^5,6 Therefore, the research on PAT has important practical significance. Why using PAT as an energy-recovery equipment in the aforementioned processes is that it has many outstanding merits, for instance, simple structure, quantity production (lower cost), perform reliably, small volume, convenient maintenance, and so on.⁷ However, the efficiency of PAT is relatively low.⁸

中文翻译：

---

泵作水轮机叶轮子午面优化

在能源问题日益严峻的今天，开展节能减排研究显得尤为重要。^{泵即透平（PAT）是一种能量回收设备，可以回收化肥、配水管网、 1-3}海水淡化、石油化工⁴以及许多其他技术领域的剩余能量。流程。^5,6因此，PAT的研究具有重要的现实意义。上述工艺中之所以采用PAT作为能量回收设备，是因为它具有结构简单、批量生产（成本较低）、性能可靠、体积小、维护方便等突出优点。⁷然而，PAT 的效率相对较低。⁸