碳钢闸阀、截止阀的阀杆推力、操作扭矩及手轮圆周力的简易计算

闸阀截止阀阀杆推力的计算,,,,,,,表1阀门阀座孔面积,,,,,,,,,,,,,,,,,,"通径

in",表3阀杆的大小压力等级Mpa（psig）,,,,,,,,,,,,,,,,,,,,,"通径

mm"

名称,符号,数据,单位,备注,,,"通径

in",压力等级Mpa（psig）,,,,,,,,,,,,,,"通径

mm",,,,PN2.0(MPa),,,PN5.0(MPa),,,PN6.8(MPa),,,PN10.0(MPa),,,PN15.0(MPa),,,PN25.0(MPa),,,PN42.0(MPa),,,

阀杆推力,F,48223.07188,N牛顿,F=f1+f2+f3,,,,PN2.0(285),,PN5.0(740),,PN6.8(990),,PN10.0(1480),,PN15.0(2220),,PN25.0(3705),,PN42.0(6170),,,,,,Ⅰ,Ⅱ,Ⅲ,Ⅰ,Ⅱ,Ⅲ,Ⅰ,Ⅱ,Ⅲ,Ⅰ,Ⅱ,Ⅲ,Ⅰ,Ⅱ,Ⅲ,Ⅰ,Ⅱ,Ⅲ,Ⅰ,Ⅱ,Ⅲ,

作用在阀座上的推力,f1,41229.67188,N牛顿,f1=M△P阀门系数,,,,d,M,d,M,d,M,d,M,d,M,d,M,d,M,,,,1/2,—,—,11.1,,,11.1,,,,,,13.5,,,,,,12.7,,,15.9,DN15

阀门阀座孔面积,M,47119.625,mm2,M=（阀座孔直径）2×3.14/4,,,1/2,13,132.7,13,132.7,13,132.7,13,132.7,13,132.7,13,132.7,13,132.7,DN15,,,3/4,—,—,12.7,,,12.7,,,,,,15.9,,,,,,15.9,,,19.0,DN20

如果不知道阀座孔直径d，可以用阀门流道直径来作为估计值。阀门阀座孔面积见表1中M。,,,,,,,3/4,19,283.5,19,283.5,19,283.5,19,283.5,19,283.5,19,283.5,19,283.5,DN20,,,1,15.9,15.9,15.9,15.9,,15.9,,15.9,,15.9,15.9,15.9,,19.0,,19.0,19.0,19.0,19.0,19.0,25.4,DN25

阀座孔直径,d,245,mm,,,,1,25,490.9,25,490.9,25,490.9,25,490.9,25,490.9,25,490.9,25,490.9,DN25,,,1-1/4,15.9,15.9,15.9,15.9,,15.9,,15.9,,15.9,15.9,19.0,,19.0,,19.0,19.0,22.2,19.0,19.0,28.6,DN32

阀门最大压差,△P,2.5,Mpa,△P=P1-P2,,,1-1/4,32,804.2,32,804.2,32,804.2,32,804.2,32,804.2,32,804.2,32,804.2,DN32,,,1-1/2,17.5,17.5,19.0,19.0,,19.0,,19.0,,19.0,19.0,19.0,,22.2,,22.2,22.2,25.4,22.2,22.2,31.8,DN40

阀门上游压力,P1,2.5,Mpa,"如果不知道P1,P2值，

△P可取表1中压力值（Mpa）",,,1-1/2,38,1134.1,38,1134.1,38,1134.1,38,1134.1,38,1134.1,38,1134.1,38,1134.1,DN40,,,2,19.0,19.0,19.0,19.0,,19.0,,19.0,,19.0,19.0,22.2,,25.4,,25.4,25.4,28.6,25.4,25.4,38.1,DN50

阀门下游压力值,P2,2.5,Mpa,,,,2,49,1885.7,49,1885.7,49,1885.7,49,1885.7,49,1885.7,49,1885.7,42,1385.4,DN50,,,2-1/2,19.0,19.0,22.2,19.0,,22.2,,22.2,,22.2,22.2,25.4,,28.6,,28.6,28.6,31.8,28.6,28.6,41.3,DN65

阀门系数,表2,0.35,,阀门系数见表2,,,2-1/2,62,3019.1,62,3019.1,62,3019.1,62,3019.1,62,3019.1,62,3019.1,52,2123.7,DN65,,,3,22.2,22.2,25.4,22.2,,25.4,,25.4,,25.4,25.4,28.6,28.6,28.6,31.8,31.8,31.8,35.0,31.8,31.8,44.4,DN80

阀杆载荷（阀杆的活塞效应）,f2,2543.4,N牛顿,f2=(df2×3.14/4)×阀门上游最大的压力,,,3,74,4300.8,74,4300.8,74,4300.8,74,4300.8,74,4300.8,74,4300.8,62,3019.7,DN80,,,4,25.4,25.4,28.6,25.4,,28.6,28.6,28.6,31.8,28.6,28.6,31.8,31.8,31.8,35.0,34.9,34.9,38.1,34.9,34.9,50.8,DN100

阀门阀杆最小直径,df,36,mm,见表3,,,4,100,7854.0,100,7854.0,100,7854.0,100,7854,100,7854.0,100,7854.0,87,5944.7,DN100,,,5,—,—,—,—,—,—,—,—,—,—,—,—,—,—,—,—,—,—,—,—,—,DN125

"如果不知道阀门上游最大最压力P1值（如管道压力不大于6.89MPa时，阀杆载荷f2可忽略

不计可取表1中压力值（Mpa)来进行计算。",,,,,,,5,127,12667.8,127,12667.8,127,12667.8,127,12667.8,127,12667.8,111,9676.9,92,6647.6,DN125,,,6,28.6,28.6,31.8,31.8,,35.0,34.9,34.9,38.1,38.1,38.1,41.3,41.3,41.3,44.4,44.4,44.4,50.8,47.6,47.6,63.5,DN150

阀杆填料摩擦力,f3,4450,N牛顿,具体数据见表4,,,6,150,17671.5,150,17671.5,150,17671.5,150,17671.5,150,17671.5,144,16286,131,13478.2,DN150,,,8,31.8,31.8,35.0,34.9,,38.1,38.1,38.1,41.3,41.3,41.3,44.4,47.6,47.6,50.8,54.0,54.0,57.2,60.3,60.3,76.2,DN200

阀门扭矩,,,,,,,8,201,31730.9,201,31730.9,201,31730.9,201,31730.9,201,31730.9,192,28952.9,179,25164.9,DN200,,,10,34.9,34.9,38.1,38.1,,41.3,44.4,44.4,47.6,47.6,47.6,50.8,54.0,54.0,57.2,63.5,63.5,66.7,73.0,73.0,88.9,DN250

扭矩,M,162.5117522,N.m牛顿.米,M=阀杆推力F×阀杆系数,,,10,252,49875.9,252,49875.9,252,49875.9,252,49875.9,252,49875.9,239,44862.7,223,39057.1,DN250,,,12,38.1,38.1,41.3,41.3,,44.4,47.6,47.6,50.8,50.8,50.8,54.0,57.2,57.2,60.3,69.8,69.8,73.0,82.6,82.6,95.2,DN300

阀杆推力,F,48223.07188,N牛顿,F=f1+f2+f3,,,12,303,72106.6,303,72106.6,303,72106.6,303,72106.6,303,72106.6,287,64692.5,265,55154.6,DN300,,,14,41.3,41.3,44.4,44.4,,,47.6,47.6,,57.2,57.2,,60.3,60.3,63.5,76.2,76.2,79.4,,,,DN350

阀杆系数,,0.00337,m米,阀杆系数见表5,,,14,334,87615.9,334,87615.9,334,87615.9,334,87615.9,322,81433.2,315,77931.1,241,45616.7,DN350,,,16,44.4,44.4,47.6,47.6,,,50.8,50.8,,60.3,60.3,,63.5,63.5,,82.6,76.2,,,,,DN400

手轮圆周力,,,,,,,16,385,116415.6,385,116415.6,385,116415.6,385,116415.6,373,109271.7,360,101787.6,274,58964.6,DN400,,,18,47.6,47.6,,50.8,,,57.2,57.2,,63.5,63.5,,76.2,76.2,,95.2,,,,,,DN450

手轮圆周力,Fs,,N牛顿,Fs=M/R,,,18,436,149301.0,436,149301.0,436,149301.0,436,149301,423,140530.5,371,108103,311,75964.5,DN450,,,20,50.8,50.8,,54.0,,,63.5,63.5,,69.8,69.8,,82.6,,,108.0,,,,,,DN500

手轮半径,R,,mm毫米,,,,20,487,186272.1,487,186272.1,487,186272.1,487,186272.1,471,174233.5,415,135265.2,343,92401.3,DN500,,,22,—,—,—,—,—,—,—,—,—,—,—,—,—,—,—,—,—,—,—,—,—,DN550

,,,,,,,22,538,227328.8,538,227328.8,538,227328.8,538,227328.8,522,214008.4,457,164029.6,378,112220.8,DN550,,,24,57.2,57.2,,63.5,,,69.8,69.8,,76.2,76.2,,101.6,,,127.0,,,,,,DN600

,,,,,,,24,589,272471.1,589,272471.1,589,272471.1,589,272471.1,570,255175.9,498,194781.9,413,133964.6,DN600,,,26,60.3,—,,69.8,,,,,,,,,,,,,,,,,,DN650

表4填料摩擦推力和转矩及阀杆的活塞效应,,,,,,,26,633,314700.4,633,314700.4,633,314700.4,633,314700.4,617,298992.4,540,229022.1,448,157632.6,DN650,,,28,63.5,,,76.2,,,,,,,,,,,,,,,,,,DN700

摩擦推力（升降杆）,,阀杆直径,"1""(25毫米）以下","1""～2""(25～50毫米）","2""(50毫米）以上",,28,684,367453.2,684,367453.2,684,367453.2,684,367453.2,665,347322.7,584,267864.8,483,183224.8,DN700,,,30,63.5,,,82.6,,,,,,,,,,,,,,,,,,DN750

,,推力,4450N牛顿,6670N牛顿,11120N牛顿,,30,735,424291.7,735,424291.7,735,424291.7,735,424291.7,712,398152.9,625,306796.2,517,209928.3,DN750,,,32,—,,,,,,,,,,,,,,,,,,,,,DN800

"活塞效应

（明杆阀阀杆载荷）",,"如果管道压力超过6.897MPa，应加入介质对阀杆的腿力（活塞效应），介质对阀杆的推力

=管道压力×阀杆面积（通过填料压盖处）",,,,,32,779,476611.8,779,476611.8,779,476611.8,779,476611.8,760,453646.0,,,,,DN800,,,34,,,,,,,,,,,,,,,,,,,,,,DN850

,,,,,,,34,830,541060.8,830,541060.8,830,541060.8,830,541060.8,808,512758.2,,,,,DN850,,,36,69.8,,,88.9,,,,,,,,,,,,,,,,,,DN900

摩擦转矩,,摩擦转矩=摩擦力×阀杆半径（在填料压盖处的半径）,,,,,36,874,599946.8,874,599946.8,874,599946.8,874,599946.8,855,574145.7,,,,,DN900,,,38,,,,,,,,,,,,,,,,,,,,,,DN950

,,,,,,,38,925,672006.3,925,672006.3,925,672006.3,925,672006.3,,,,,,,DN950,,,40,,,,,,,,,,,,,,,,,,,,,,DN1000

,,,,,,,40,976,748151.4,976,748151.4,976,748151.4,976,748151.4,,,,,,,DN1000,,,42,82.6,,,101.6,,,,,,,,,,,,,,,,,,DN1050

,,,,,,,42,1020,817128.2,1020,817128.2,1020,817128.2,1020,817128.2,,,,,,,DN1050,,,48,,,,,,,,,,,,,,,,,,,,,,DN1200

,,,,,,,48,1166,1067792.7,1166,1067792.7,1166,1067792.7,1166,1067792.7,,,,,,,DN1200,,,54,,,,,,,,,,,,,,,,,,,,,,DN1350

截止阀扭矩=推力*阀杆摩擦系数（查表）*安全系数,,,,,,,54,1312,1351940.4,1312,1351940.4,1312,1351940.4,1312,1351940.4,,,,,,,DN1350,,,56,,,,,,,,,,,,,,,,,,,,,,DN1400

推力=3.14*口径平方*压力）/4=N,,,,,,,56,1360,1452672.4,1360,1452672.4,1360,1452672.4,1360,1452672.4,,,,,,,DN1400,,,60,,,,,,,,,,,,,,,,,,,,,,DN1500

闸阀是截止阀的0.45,,,,,,,60,1458,1669571.1,1458,1669571.1,1458,1669571.1,1458,1669571.1,,,,,,,DN1500,,,,,,,,,,,,,,,,,,,,,,,,,

,,,,,,,,注：1）表中的d为阀门阀座直径（mm）；M为流通面积（mm2）,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

,,,,,,,,2）阀门最大压差△P可以取表中压力值（Mpa）,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

,,,,,,,表2阀门系数,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

,,,,,,,阀门类型,,,,,液体,,,,,,气体,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

,,,,,,,,,,,,400℃以下,,,400℃以上,,,400℃以下,,,400℃以上,,,,,,,,,,,,,,,,,,,,,,,,,,

,,,,,,,平行式闸阀和弹性楔式闸阀或双闸板,,,,,0.25,,,0.3,,,0.35,,,0.45,,,,,,,,,,,,,,,,,,,,,,,,,,

,,,,,,,刚性楔式闸阀,,,,,0.35,,,0.4,,,0.45,,,0.5,,,,,,,,,,,,,,,,,,,,,,,,,,

,,,,,,,"2""(50毫米）以上截止阀",,,,,1.15,,,1.15,,,1.15,,,1.15,,,,,,,,,,,,,,,,,,,,,,,,,,

,,,,,,,"2""（50毫米）以下截止阀",,,,,1.5,,,1.5,,,1.5,,,1.5,,,,,,,,,,,,,,,,,,,,,,,,,,

,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

,,,,,,,表5梯形螺纹阀杆系数,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

,,,,,,,"阀杆尺寸

直径×螺距

/mm×mm",阀杆系数/m,"阀杆尺寸

直径×螺距

/mm×mm",阀杆系数/m,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

,,,,,,,10×3,0.00111,46×8,0.00435,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

,,,,,,,12×3,0.00125,48×8,0.00449,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

,,,,,,,14×3,0.00140,50×8,0.00464,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

,,,,,,,16×3,0.00154,52×8,0.00478,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

,,,,,,,16×4,0.00167,55×8,0.00500,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

,,,,,,,18×4,0.00181,60×8,0.00536,,,,,,,,,,,,,,,,