贵港二线船闸泄水阀门体型研究

发布时间：2018-04-24 21:08

本文选题：船闸 + 泄水阀门　；参考：《水运工程》2016年12期

【摘要】：贵港船闸是西江航运干线的咽喉,航运地位十分重要。通过建立比尺为1∶15的泄水阀门非恒定流常压模型,对6种动水关门事故工况条件下贵港船闸泄水阀门3种体型的动水启闭力特性进行了系列研究,获得阀门底缘形式、阀门下游侧面板是否封闭对动水启闭力的影响规律:阀门下游侧面板不封闭将使下游河道水位的波动直接传播到阀门门井中,导致阀门启闭力反复波动;当阀门底缘朝下时,底缘斜面压力小,底缘受力主要表现为下吸力,因此对应开门过程启门力大、闭门过程闭门力小;阀门底缘朝上,底缘斜面压力大,底缘受力主要表现为上托力,因此对应开门过程启门力小、闭门过程闭门力大,采用底缘朝上型阀门时,应考虑阀门配重。
[Abstract]:Guigang Shiplock is the throat of Xijiang main line, and the shipping position is very important. By establishing an unsteady flow atmospheric pressure model of discharge valve with a scale of 1:15, the characteristics of dynamic opening and closing force of three types of valve in Guigang shiplock under six conditions of dynamic water closure accident were studied, and the bottom edge of valve was obtained. The effect of valve downstream side panel closure on the dynamic opening and closing force: when the valve downstream side panel is not closed, the fluctuation of the downstream channel water level will propagate directly to the valve gate well, resulting in the valve opening and closing force fluctuating repeatedly; when the valve bottom edge is down, The lower suction is the main force on the bottom edge and the pressure on the bottom edge is low, so the opening force is large and the closed force is small during the process of opening the door, the bottom edge of the valve is facing up, the pressure on the bottom edge is large, and the force on the bottom edge is mainly the support force. Therefore, the opening force of the corresponding door opening process is small, and the closed force of the closed door process is large. When adopting the bottom-edge upward valve, the weight of the valve should be considered.
【作者单位】：南京水利科学研究院水文水资源与水利工程科学国家重点实验室通航建筑物建设技术交通行业重点实验室;
【基金】：中央级公益性科研院所专项资金(Y115009)
【分类号】：U641.3

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