环保绞吸船管道输送加气增排技术现场试验研究及能效分析  

Field experimental study and efficiency analysis on gas injection technology boosting discharge distance of pipeline transportation of environment-friendly cutter suction dredger

作　　者：李盼盼 骆佳成 袁超哲 郝宇驰 陶润礼 LI Pan-pan;LUO Jia-cheng;YUAN Chao-zhe;HAO Yu-chi;TAO Run-li(CCCC National Engineering Research Center of Dredging Technology and Equipment Co.,Ltd.,Shanghai 200082,China)

机构地区：[1]中交疏浚技术装备国家工程研究中心有限公司,上海200082

出　　处：《中国港湾建设》2023年第2期89-95,共7页China Harbour Engineering

摘　　要：针对河湖库清淤环保绞吸船长排距输送吹距不足、传统接力泵增排方式安装维护困难及使用成本较高的问题,依托现场工程开展射流管加气和风炮管直接加气2种不同加气方式的增排技术试验研究,并对其增排效果和能效进行对比分析。研究表明,射流管加气和风炮管直接加气2种加气方式均具有增压减阻增排增流的效果。二者相比,射流管加气方式更能起到节能降本增效的作用。通过工程现场测试,相比于传统接力泵方式,采用射流管加气工艺可增产约9%,降低单方成本约6.0%,若换算为排距,可在原排距基础上提升排距约16.6%,其节能增排效果显著。本研究结果可为河湖库清淤环保绞吸船的长排距施工提供参考。In order to alleviate the problems of insufficient discharge distance of an environment-friendly cutter suction dredger with long pipeline transportation and difficulty of installation and maintenance and high using cost of traditional relay pumps in dredging in rivers,lakes and reservoirs,the experimental study on gas injection technology boosting discharge distance of pipeline transportation with two different gas injection methods of gas injection by jet pipe and direct gas injection by air compressor pipe with large diameter is carried out based on field dredging operations,and the effects of discharge distance increase and energy efficiency of the two gas injection methods are compared and analyzed.The results of study show that both gas injection by jet pipe and direct gas injection by air compressor pipe with large diameter have the effects of pressure increase,drag reduction,discharge distance increase and flow increase.Compared with the direct gas injection by air compressor pipe with large diameter,the gas injection method by jet pipe can better save energy,reduce cost and increase efficiency.Through field tests and compared with the traditional relay pumping method,the adoption of gas injection by jet pipe method can increase production by about 9%and reduce the dredging cost per cubic meter by about 6.0%.If converted into discharge distance,the discharge distance of pipeline transportation can be increased by about 16.6%on the basis of the original discharge distance,which has remarkable effects of energy conservation and discharge distance increase.The results of this study can provide reference for long distance discharge operations of environment-friendly cutter suction dredgers in dredging in rivers,lakes and reservoirs.

关 键 词：河湖库清淤 环保绞吸船 射流管加气 节能增排 长排距 

分 类 号：U671[交通运输工程—船舶及航道工程]