板框式旋转滤网清污性能分析及提升研究
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摘要
在核电站冷源系统中,各种过滤设备对于保障电站冷却水水质具有重要作用,其中旋转滤网为最重要的过滤设备。为提高其拦截及清污能力,最终提升核电站冷源系统的可靠性,对现有板框式旋转滤网进行分析研究,提出了3种改进优化设计方案:(1)斗形结构网板框架;(2)弧形结构网板框架;(3)斗形与弧形网板框架组合结构。分别给出了这3种网板框架结构与原结构清污量的理论最大值,结果表明3种方案均能较大幅度地提升旋转滤网的清污能力。为验证理论计算结果,对这3种优化方案进行工业性试验,采用纤维球和灌水塑料球模拟被拦截的污物,所得结果与理论计算结果基本一致,其中斗形与弧形网板框架组合结构清污能力最强。
Of all various filters that are vital to ensure the water quality for the nuclear power station, the rotary filter plays the most significant role in the cooling water source system. In order to improve the interception and decontamination capability and ultimately enhance the reliability of the cooling water source system of nuclear power station, three optimized design schemes are proposed based on the analysis and study of the existing plate-frame rotary filter:(1) Bucket-shaped reticulated frame;(2) Arcshaped reticulated frame;(3) Combination of bucket-shaped and arc-shaped reticulated frame. The theoretical maximal values of the removal capacity with respect to the three mesh frame structures versus the original structure are provided. The results show that all three enhanced schemes can greatly improve the removal capacity of the rotary filter. To verify the theoretical calculation results,industrial tests were carried out on the three above schemes respectively by using the fiber balls and water-filled plastic balls to mimic the contaminants to be intercepted. The testing results were basically consistent with the theoretical calculation results. In addition, the bucket-shaped and arc-shaped lattice frame composite structure has exhibited the strongest cleaning capacity.
Of all various filters that are vital to ensure the water quality for the nuclear power station, the rotary filter plays the most significant role in the cooling water source system. In order to improve the interception and decontamination capability and ultimately enhance the reliability of the cooling water source system of nuclear power station, three optimized design schemes are proposed based on the analysis and study of the existing plate-frame rotary filter:(1) Bucket-shaped reticulated frame;(2) Arcshaped reticulated frame;(3) Combination of bucket-shaped and arc-shaped reticulated frame. The theoretical maximal values of the removal capacity with respect to the three mesh frame structures versus the original structure are provided. The results show that all three enhanced schemes can greatly improve the removal capacity of the rotary filter. To verify the theoretical calculation results,industrial tests were carried out on the three above schemes respectively by using the fiber balls and water-filled plastic balls to mimic the contaminants to be intercepted. The testing results were basically consistent with the theoretical calculation results. In addition, the bucket-shaped and arc-shaped lattice frame composite structure has exhibited the strongest cleaning capacity.
引文
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[15]徐传堂.循环水旋转滤网故障的原因分析及处理[J].节能,2009(12):49-50.XU Chuantang.Analyzing and treating for malfunction in rotating filter[J].Energy Conservation,2009(12):49-50.
[16]陶鸿.一次旋转滤网的改造[J].华东电力,1995,23(10):42-43.TAO Hong.Alteration of primary rotary filter screen[J].East China Electric Power,1995,23(10):42-43.
[17]王浩志,楼波,陈东芝.珠江电厂循环水一次旋转滤网的改造[J].电站辅机,2005(9):30-32,35.WANG Haozhi,LOU Bo,CHEN Dongzhi.Renovation of one-cycle rotating filter for circulating water in Zhujiang power plant[J].Power Station Auxiliary Equipment,2005(9):30-32,35.
[18]杨立隆.循环水旋转滤网的改造[J].浙江电力,2001(6):11-13.YANG Lilong.Reconstruction of rotating filter net of circulating water[J].Zhejiang Electric Power,2001(6):11-13.
[19]贺慧勇.智能旋转滤网液位差控制装置的研制[J].长沙电力学院学报(自然科学版),1996,11(2):132-135.HE Huiyong.The development of intellect control device of the liquid level difference for rotary filter gauze[J].Journal of Changsha University Electric Power(Natural Science),1996,11(2):132-135.
[20]曹永旺,易鹏,陈文焕.核安全级旋转滤网功能要求及其设计要点[J].给水排水,2017,43(S2):63-65.
[2]颜国呈,吕文婷.基于电厂取水外来物堵塞的预防管理[J].科技创新与应用,2016(14):119.
[3]高志娟,李铎,王念慎,等.带有侧向进水旋转滤网的泵房进水流道模型分析[J].中国给水排水,2006,22(16):48-51.GAO Zhijuan,LI Duo,WANG Nianshen,et al.Model analysis of inlet conduit of circulating water pump station with side-inlet rotating filter net[J].China Water&Wastewater,2006,22(16):48-51.
[4]孔珑.工程流体力学[M].北京:中国电力出版社,1998.
[5]中华人民共和国住房和城乡建设部.泵站设计规范:GB 50265-2010[S].2011.
[6]中华人民共和国电力工业部.板框式旋转滤网:DL/T 458-1999[S].2000.
[7]上海市政工程设计研究院.给水排水设计手册:第9册[M].北京:中国建筑工业出版社,2006.
[8]杜旭.三门核电一期工程板框式旋转滤网选型浅析[J].中国高新技术企业,2014(21):59-62.
[9]周保卫,周金全.滨海电厂取水泵房滤水设备布置研究[J].华电技术,2012,34(6):16-21.ZHOU Baowei,ZHOU Jinquan.Study on layout of water filtering equipments of pumping station for coastal power plants[J].Huadian Technology,2012,34(6):16-21.
[10]任萍,刘小会.陡河发电厂循环水泵房旋转滤网改造[J].电力科学与工程,2008,24(6):30-33.REN Ping,LIU Xiaohui.Alteration of rotary filter in circulating pump house in Douhe power plant[J].Electric Power Science and Engineering,2008,24(6):30-33.
[11]钟云泰.海水循环冷却系统海生物污染的控制[J].华东电力,2004,32(8):30-33.ZHONG Yuntai.Control of marine creature fouling in sea water circulating cooling system[J].East China Electric Power,2004,32(8):30-33.
[12]侯辰光.海洋平台防海生物装置的应用[J].中国修船,2004(6):35-36.HOU Chenguang.Application of apparatus for preventing marine organisms on ocean-platform[J].China Shiprepair,2004(6):35-36.
[13]程国辉.循环水系统海生物污染控制[J].智慧电力,2005,33(2):29-31.CHENG Guohui.Marine biological pollution control in circulating water system[J].Smart Power,2005,33(2):29-31.
[14]王军伟,李世涛.沿海电厂海生物危害及对策[J].广东电力,2015,28(9):33-36.WANG Junwei,LI Shitao.Marine lives harm in sea coastal power plants and countermeasures[J].Guangdong Electric Power,2015,28(9):33-36.
[15]徐传堂.循环水旋转滤网故障的原因分析及处理[J].节能,2009(12):49-50.XU Chuantang.Analyzing and treating for malfunction in rotating filter[J].Energy Conservation,2009(12):49-50.
[16]陶鸿.一次旋转滤网的改造[J].华东电力,1995,23(10):42-43.TAO Hong.Alteration of primary rotary filter screen[J].East China Electric Power,1995,23(10):42-43.
[17]王浩志,楼波,陈东芝.珠江电厂循环水一次旋转滤网的改造[J].电站辅机,2005(9):30-32,35.WANG Haozhi,LOU Bo,CHEN Dongzhi.Renovation of one-cycle rotating filter for circulating water in Zhujiang power plant[J].Power Station Auxiliary Equipment,2005(9):30-32,35.
[18]杨立隆.循环水旋转滤网的改造[J].浙江电力,2001(6):11-13.YANG Lilong.Reconstruction of rotating filter net of circulating water[J].Zhejiang Electric Power,2001(6):11-13.
[19]贺慧勇.智能旋转滤网液位差控制装置的研制[J].长沙电力学院学报(自然科学版),1996,11(2):132-135.HE Huiyong.The development of intellect control device of the liquid level difference for rotary filter gauze[J].Journal of Changsha University Electric Power(Natural Science),1996,11(2):132-135.
[20]曹永旺,易鹏,陈文焕.核安全级旋转滤网功能要求及其设计要点[J].给水排水,2017,43(S2):63-65.