水力式升船机组合阀流量比优化研究  

Flow ratio optimization of combined valves in hydro-driven ship lift

作　　者：王蛟[1] 胡亚安[2] 马希钦[1] 蔡新永[1] WANG Jiao;HU Ya'an;MA Xiqin;CAI Xinyong(Chongqing Jiaotong University,Southwest Research Institute for Hydraulic and Water Transport Engineering,Key Laboratory of Inland Waterway Regulation Engineering,Chongqing 400016,China;Key Laboratory of Navigation Structures State,Key Laboratory of Hydrology-water Resources and Hydraulic Engineering,Nanjing Hydraulic Research Institute,Nanjing 210029,China)

机构地区：[1]重庆交通大学,西南水利水运工程科学研究院,内河航道整治技术交通行业重点实验室,重庆400016 [2]南京水利科学研究院,通航建筑物建设技术交通行业重点实验室,水文水资源与水利工程科学国家重点实验室,江苏南京210029

出　　处：《水运工程》2023年第4期91-95,195,共6页Port & Waterway Engineering

基　　金：重庆市教委科技研究项目(KJQN202000722)。

摘　　要：景洪水力式升船机阀门段采用“并列三阀+矩形突扩体”的布置形式,目前组合阀流量分配暂无科学的指导依据。以景洪水力式升船机为依托,建立阀门段三维数值模型,研究组合阀不同流量比下的阀门段流场特性。结果表明,三阀联合运行时,突扩体内流场均匀度最佳;三阀联合运行时,主辅阀流量比为31时,流场内最低压力最高、最大流速最小、紊动较弱,最有利于抑制空化;组合阀合理流量比与流量系数比正相关,景洪工程组合阀较优的主辅阀流量比约为31。The layout of“parallel three valves+rectangular sudden expansion”is adopted in the valve section of Jinghong hydro-drvien ship lift.At present,there is no scientific guiding basis for the flow distribution of the combined valves.In this paper,based on Jinghong hydro-drvien ship lift,a three-dimensional numerical model of valve segment is built to study the flow field characteristics under different flow ratios of combined valves.The results show that the flow field uniformity of joint operation of three valves is the best.When the flow ratio of valves is equal to 31,the lowest pressure in the flow field is the highest,the maximum velocity is the lowest,the turbulence is weak,and the cavitation is best inhibited.The reasonable flow ratio of combined valves is positively correlated with the flow coefficient ratio.The optimal flow ratio of the main and auxiliary valves is approximately equal to 31 for combined valves in Jinghong project.

关 键 词：水力式升船机 组合阀 数值模拟 流量比 

分 类 号：U642.1[交通运输工程—船舶及航道工程] TV672[交通运输工程—船舶与海洋工程]