供水泵变频调速范围的确定.pdf

( ), 2010, 41 (4): 579- 582 Jour al of Sha do g Agricu lturalU iversity ( Natural Scie ce) 宋学东, 王增奇, 吕艳, 宋 元 ( , 271018) : , , , 40~ 50% : ; ; ; : TN 915. 02 : A : 1000- 2324( 2010) 04- 0579- 04 DETERM INATION OF THEWATER PUMPSVARYING FREQUENCY SPEED REGULATION RANGE SONG Xue- do g, WANG Ze g- qi, LV Ya , So gYua ( College ofW ater Co serva cy a d Civ ilE g i eeri g , Sha do g A griculturalU iversity, Taia 271018, Chi a) Abstract:This paper study the determ i atio m ethods of the speed regulatio ra ge ofw ater pumps used for var yi g freque cy speed regulatio from three factorswh ich i flu ced the pumps varyi g freque cy speed regulatio ra ge, a d derives a speed regulatio ra ge s refere ce value of d iffere t pump i g devices, differe t selectio pumps param eters a d differe t pumps performa ce. U der ormal circum sta ces pump i g statio that the loss head accou ts for a larger proportio of the total head ca have a greater speed regu latio ra ge, a d u der the same co d itio s of selectio for high specific speed pumps a d pump parameters selected arou d the right side poi t of the efficie t areas ca get a greater speed regu latio ra ge, but the m axmi um speed regu latio ra ge shou ld ot exceed the rated speed s 40 ~ 50%. Key ords:W ater pump; varyi g freque cy speed regulatio ; speed regulatio ra ge; pump i g device (), , , [ 1] , , , 1 : , ; , ; , 2 : , : 2009- 11- 04 : ( 1962- ), , , , 580 () 41 , [ 2] , 2. 1 , OA 1A2 ( 1)H0B, C, C [ 3] ,