泵站不同类型拍门的开启角和撞击力分析  

Opening Angle and Impact Force Analysis of Different Types Flap Valve in Pumping Stations

作　　者：王志祥[1] 李端明[2] 李娜[2] 陈坚[1] 

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,武汉430072 [2]中国灌溉排水发展中心,北京100054

出　　处：《中国农村水利水电》2012年第7期87-90,共4页China Rural Water and Hydropower

摘　　要：基于能量法推导了拍门的运动方程,结合百里洲泵站实例,分析计算了不同安装形式(自由侧翻式、自由起落式和井盖式)、不同门页数(单扇、双扇)和不同材质(钢质、复合材料)拍门的开启角和撞击力。同等条件下,计算结果表明:对不同安装形式的单块拍门,自由侧翻式拍门的开启角比自由起落式大22°,比井盖式大12°,撞击力三者相差不多;对不同的门页数,双扇拍门的开启角比单扇略大,双扇自由侧翻式拍门的撞击力是单扇的42%,双扇井盖式拍门的撞击力是单扇的49%;比较材质,用复合材料制成的自由侧翻式拍门的开启角比钢质拍门大4%左右,撞击力比钢质拍门约减小10%,复合材料自由起落式和井盖式拍门的开启角比钢质拍门大10%～15%,撞击力比钢质拍门分别约减小40%和30%。由此可见,就水力性能而言,自由侧翻式和复合材料拍门值得推崇。Deriving motion equation of flap valve with the energy method,calculating and analyzing the opening angle and impact force of different forms of installation（free rollover,free suspended,covers）,different valve pages（single-leaf and double-leaf） and different materials（steel and composite materials） with the example of Bailizhou Pumping Station.Under the same conditions,the results show that：for single-block flap valve of different installations,opening angle of free rollover flap valve is bigger than free suspended flap valve at 22°,and bigger than cover flap valve at 12°,impact force of three installation forms flap valve is close.For different valve pages,opening angle of double-leaf flap valve is slightly larger than the single-leaf,impact force of free rollover double-leaf flap valve is 42% of the single-leaf,and cover double-leaf flap valve is 49% of the single-leaf.Comparing different materials,opening angle of free rollover composite flap valve is 4% bigger than the steel flap valve,its impact force is 9.6% smaller than steel flap valve,and opening angle of free suspended composite flap valve and cover composite flap valve is 10%～15% bigger than their steel flap valve,impact force of free suspended composite flap valve is 39.5% smaller than the steel flap valve,and cover composite flap valve is 28.5% smaller than the steel flap valve.This shows that,for the hydraulic performance,free rollover and composite material flap valve is worthy of popularization.

关 键 词：泵站拍门 运动方程 开启角 撞击力 

分 类 号：TV675[水利工程—水利水电工程]