旋流除砂器的改进及其试验效果.PDF

34 5 2006 10 :100121986 (2006) 0520071204 COAL GEOLOGY EXPLORATION Vol. 34 No. 5 Oct. 2006 , ( , 430074) :, ,, ,, 91 % : ;; : P634. 3 :A Improvement design of conventional cyclone desander and it s experiment result SHAO Chun , YAN Tai2ning ( Faculty of Engineering , China University of Geosciences , Wuhan 430074 , China) Abstract : It is analyzed why sand2removing effect of conventional cyclone desander is bad , and it is pointed out that the column of whirling gas in the center has a marked effect on purifying mud. According to the analysis , we improved conventional cyclone de2 sander. The improvement is that a round pole whose diameter equals to the diameter of whirling gas column is installed in the axes of conventional cyclone desander , which conduces to separating sand of inner cyclone and reduces swing range of inner cyclone and whirling gas column in order to enhance desanding efficiency. The experimental results show that the total desanding efficiency of the improved cyclone desander is 91 %. Key words : conventional cyclone desander ; desanding efficiency ; improvement 1 ( ;c. , , , , a b2 , , , , , ), 2, , , :a . ; b. , 2 2. 1 , , , , , ( 1) , ; 2 ) ( 2) , , , , ( , ; , ,2 ( ) :2006201217 : (200020170129) : (1974 ) , , , , 1 ? 1994-2009 China Academic Journal Electronic Publishing House. All rights reserved. 72 , , , , , , , 34 a. ( b. ( d2 ) ; c. , dB , 2) ; 1, ( d3 ) : dB = (0. 55 0. 7) d2 , ; d2 (1) , , : , 1 Fig. 1 principle of cyclone desander , Fc , ,, ,, ,F 2 Fig. 2 Flow pattern of inner cyclone in cyclone desander 1 ;2 ;3 2. 2 ,: , : ur = cons t , u ;r ;cons t , U , (2) : cons t = UDΠ2 , Fc = m u2 r , (2) (3) (4) ,F= ( d - : Fc = m U2 D2 4 r3 ) V U2 D2 4 r3 , d; ;V :u= r, ,, : F= ( d - ) 2 r 2. 3 , (2) (3) (4) (5) (6) (7) ? 1994-2009 China Academic Journal Electronic Publishing House. All rights reserved. 5 ,: , ,a . , , ; , , ( 2) , , , 73 : 3 4 mm , ; () 0 , , , , , () 1. 5 2 mm ; , , , (6) , , , , , F , , , b. , , , , , , (7) , , , , , ,