水利水电技术
水利水電技術
수이수전기술
WATER RESOURCES AND HYDROPOWER ENGINEERING
2009年
11期
40-44
,共5页
南水北调中线工程%长距离输水%空气阀%水锤防护%合理设置
南水北調中線工程%長距離輸水%空氣閥%水錘防護%閤理設置
남수북조중선공정%장거리수수%공기벌%수추방호%합리설치
Mid-route of South-to-North Water Transfer Project%long-distance water conveyance%air valve%water hammer protection%reasonable layout
南水北调中线工程惠南庄一大宁段采用2排4 m直径的PCCP管,为大口径长距离管道输水系统,其运行工况复杂,压力变幅大,应充分考虑长距离大型有压输水管道发生破坏性水锤事故的多样性及其特点.针对工程特点着重对空气阀型式、布置等进行分析论证,确保压力输水系统安全、可靠,减少维修,节约运营成本.
南水北調中線工程惠南莊一大寧段採用2排4 m直徑的PCCP管,為大口徑長距離管道輸水繫統,其運行工況複雜,壓力變幅大,應充分攷慮長距離大型有壓輸水管道髮生破壞性水錘事故的多樣性及其特點.針對工程特點著重對空氣閥型式、佈置等進行分析論證,確保壓力輸水繫統安全、可靠,減少維脩,節約運營成本.
남수북조중선공정혜남장일대저단채용2배4 m직경적PCCP관,위대구경장거리관도수수계통,기운행공황복잡,압력변폭대,응충분고필장거리대형유압수수관도발생파배성수추사고적다양성급기특점.침대공정특점착중대공기벌형식、포치등진행분석론증,학보압력수수계통안전、가고,감소유수,절약운영성본.
For the Huinanzhuang to Darting Section of the Mid-route of the South-to-North Water Transfer Project, two parallel lines of PCCP pipelines with the diameter of 4m are adopted; which is a long-distance water conveyance system built with large diameter pipelines. The operation condition for the system is complicated with larger range of pressure change, for which the variety and characteristics of the destructive accident of the large long-distance pressure water conveyance pipeline caused by water hammer must be fully considered. Therefore, the analysis and demonstration are made herein on the type and layout of the air valves for the pipeline based on the characteristics of the project, so as to ensure the safety and reliability of the pressure water conveyance system and reduce the costs for both the maintenance and the operation as well
