3、edouble-suctioncentrifugalpump.Mainlyincludesthedesigncalculationsofoverallstructural,hydraulic,pressurizedwaterchamber,suctionchamberandthecheckingofthemaincomponents.Thepumpinthispaperis apumpwithdoublesupportstructureandonlyhasone impeller. The centrifugalpumphas the doub