化工进展2025，Vol.44Issue(12)：6779-6788,10.DOI:10.16085/j.issn.1000-6613.2024-1824
自驱型旋转式能量回收装置启动与运行特性
Startup and operating characteristics of self-driven rotary energy recovery device
摘要
Abstract
In the reverse osmosis seawater desalination technology,energy recovery devices are essential equipment.Unfortunately,currently there exists a paucity of research concerning the design,startup,and operational characteristics of the self-driven rotary energy recovery devices.This study initially conducted a theoretical derivation of the rotor speed variation during the startup process and established a relationship between the inlet flow velocity and the rotor speed based on the principle of energy conservation.Three-dimensional numerical simulations for the flow field within the device were conducted,and it was found that the rotor stable speed increased with the increase in inlet flow velocity.When the guide vane angle was in 20°—35°,the rotor speed rose as the angle decreased.However,when the angle was further reduced to 15°—20°,the speed decreased slightly.The variation of rotor torque during rotor startup process was analyzed,revealing that the torque initially reached a maximum value and subsequently diminished to zero thereafter,exhibiting oscillatory characteristics.The rotor speed stabilization time was defined as the rotor startup time.This startup time decreased with increasing inlet flow velocity and exhibited significant variations at smaller guide vane angles.In specific,at a guide vane angle of 20°,the range of startup time was 0.85 seconds,whereas at an angle of 35°,it was 0.41 seconds.Selecting an end cap angle of 17° to 23° allowed the rotor to achieve higher rotational speeds and shorter startup times.关键词
海水淡化/能量回收/转子自启动/流体力学/数值模拟Key words
seawater desalination/energy recovery/rotor self-starting/fluid mechanics/numerical simulation分类
机械制造引用本文复制引用
葛祎阳,沈胜强,梁刚涛..自驱型旋转式能量回收装置启动与运行特性[J].化工进展,2025,44(12):6779-6788,10.基金项目
国家自然科学基金优秀青年科学基金(52422605) （52422605）
兴辽英才计划(XLYC2403198) （XLYC2403198）
中央高校基本科研业务费(DUT25Z2519). （DUT25Z2519）
