长江科学院院报2017，Vol.34Issue(6)：149-154,6.DOI:10.11988/ckyyb.20160295
压差放大式逆止阀的研制及工程应用
Development and Engineering Application of Reverse Check Valve Based on Differential Pressure Amplification
摘要
Abstract
Drainage system and pressure reduction measures are usually adopted to treat the uplift of anti-seepage structure of water transfer project caused by long route and varying groundwater table.Check valve-drainage system in which reverse check valve plays a key role nakes one of the best choice for its one-way flow performance.Existing reverse check valves have an inflexible opening and shutoff process,a poor long term performance,a meticulous construction operation,and must be accurately installed in a certain direction.To solve these problems,a novel reverse check valve based on differential pressure amplification is researched and developed in consideration of application conditions.The principle of opening and shutoff is improved;and new shutoff type and anti-clogging method are put forward.Opening and shutoff of the new check valve is only driven by amplified differential water pressure,and no other external force is needed,thus,it can be installed in every direction.Differential pressure amplification components and arc close structure are developed to improve the reliability and flexibility of opening and shutoff.Anti-clogging structure is designed and anti-fatigue problem is considered to ensure the long-term performance.The new reverse check valve can be widely used in the drainage system of canal,slope protection of dike and river course,groundwater table change belt of dam,water conveyance tunnel and other water-involving structures.关键词
输引水工程/压差放大/逆止阀/防渗结构/抗浮稳定Key words
water conservancy projects/differential pressure amplification/reverse check valve/seepage prevention/stability against floating分类
建筑与水利引用本文复制引用
程永辉,龚泉,郭鹏杰..压差放大式逆止阀的研制及工程应用[J].长江科学院院报,2017,34(6):149-154,6.基金项目
国家“十二五”科技支撑计划项目(2011BAB10A04,2011BAB10A06) （2011BAB10A04,2011BAB10A06）
