均压移水系统作为船舶的重要系统，对船舶的平稳运行具有重要意义。均压移水系统长管路造成的压力损失不仅会对系统的移水能力造成影响，也可能导致气蚀现象出现。本文通过调节阀门开度产生大压差模拟实际管路压力损失，对均压移水系统在大压差工况下的水力特性进行研究并通过实验进行验证，仿真与实验结果吻合较好，并发现了均压移水系统水回路与气回路压力循环的规律。此外，通过仿真研究还发现：随着压差的增大、管路的增长、管路压力损失的增大，系统移水能力与泵入口处最小压力会相应降低，可能出现气蚀现象；增大系统初始均压压力会增大泵入口处最小压力，有效抑制气蚀现象的出现。
As an important system of ships, water transfer system is of great significance to the smooth operation of ships. The pressure loss caused by the long pipeline of the water transfer system will not only affect the water transfer capacity of the system, but also lead to the phenomenon. Therefore, this paper simulates the actual pipeline pressure loss by adjusting the valve opening to produce a large differential pressure, studies the hydraulic characteristics of the pressure equalizing water system under the condition of large differential pressure, and verifies it through experiments. The simulation is in good agreement with the experimental results, and finds the pressure circulation law of the water circuit and gas circuit of the pressure equalizing water system. In addition, through simulation research, it is found that with the increase of pressure difference, pipeline growth and pipeline pressure loss, the water transfer capacity of the system and the minimum pressure at the pump inlet will be reduced accordingly, and cavitation may occur. Increasing the initial pressure equalizing pressure of the system will increase the minimum pressure at the pump inlet, which can effectively inhibit the occurrence of cavitation.
2023,45(8): 26-30 收稿日期：2022-03-09
DOI：10.3404/j.issn.1672-7649.2023.08.006
分类号：U661.1
作者简介：张政(1999-),男,硕士研究生,研究方向为机械系统与装置
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