閥門扭矩計算-附表

1、閥門扭矩計算簡解閥門扭矩計算的方法是什么 ？閥門扭矩是閥門一個重要參數(shù),因此不少朋友都很關注閥 門扭矩計算的問題.現(xiàn)提供一種閥門扭矩計算的.閥門扭矩計算具體是：二分之一閥門口徑 D的平方M.14得出閥板的面積A,再 乘以所承壓力P即閥門工作壓力得出軸所承受的靜壓力,乘以磨擦系數(shù) 查表,一般鋼 鐵的磨擦系數(shù)取 0.1,鋼對橡膠的磨擦系數(shù)取 0.15,乘以軸徑d除以1000即得閥門的扭 矩數(shù),單位為牛米N.m,電動裝置和氣動執(zhí)行器參考平安值取 閥門扭矩的1.5倍.閥門在設計時,選用執(zhí)行器是靠估算,根本分為三局部：1、密封件見的摩擦力矩球體與閥座2、填料對閥桿的摩擦力矩3、軸承對閥桿的摩擦力矩故計算

2、壓力一般取公稱壓力的0.6倍約為工彳壓力,摩擦系數(shù)根據(jù)材料定.計算的力矩乘1.31.5倍以選執(zhí)行器.閥門扭矩計算要兼顧閥板與閥座的摩擦,閥軸與填料的摩擦, 介質不同壓差下對閥板的推力.由于閥板、閥座和填料的種類太多了,每一種都有著不同的摩擦力,還有接觸面的大小,壓緊的程度等等.所以一般都是用儀表實測而不是計算.閥門扭矩計算出的數(shù)值有很大的參考意義,但并不能完全照搬.在很多因素的影響下, 閥門扭矩計算并沒有實驗得出的結果更精確.名詞解釋：扭矩扭矩是使物體發(fā)生轉動的力.發(fā)動機的扭矩就是指發(fā)動機從曲軸端輸出的力矩. 在功率 固定的條件下它與發(fā)動機轉速成反比關系, 轉速越快扭矩越小, 反之越大,它反映

3、了汽車在 一定范圍內的負載水平.附錄；閘閥、截止閥閥桿直徑、行程、關閉推力及扭矩數(shù)據(jù)口徑、閥 種、磅級閥桿 直徑螺距導程行程單頭 螺紋 圈數(shù)關閉力KN手輪關閉 總扭矩N.M雙頭螺紋 關閉扭矩N.M單頭螺關 閉扭矩N.M2G1344.234.2359149.127.6/ 70-17.82-1/2G1344.234.23751810.532.5/ 70-20.73G1784.234.23862012.143.3/ 80-28.74G126551132315.359.2/ 90-38.65G130661402322.2100-65.46G1306121662824.413293.871.88G132

4、6122183631178.9124.19610G1366122704543.6274.5188.1148.412G1407143224659417287.8225.214G1427143515070360.7352277.716G1468164085188.7529.6517.5388.618G14881646258110644.5629.8496.820G15281651564139.1862.5841.8672.724G16091862269201.81430.61396.61120.42G3344.234.23601413.140.4/ 70-25.82-1/2G3344.234.23

5、751814.745.2/ 70-28.93G3784.234.23862017.863.0 80-42.24G326551142323.792.1-60.15G330661412435.1158.4-103.66G3326121682843.9253.6175.9136.18G3366122203770.6444.1304.3240.110G34071427239104.6739.4510.3399.412G34271432446144.3743.7725.8572.614G34681635845168.1962.6940.5736.816G348816406512131254.21224.

6、2965.718G352816451562621621.915851266.520G35591851057289-1890.51495.824G365102061361413.5-3101.42478.22G6344.234.23611419.960.4/ 80-392-1/2G6784.234.23751824.286.8-57.53G62655871730.4117.9-76.94G630661151947.9215.7-141.15G636661422469.2372.2-235.26G6407141682494.3666.1459.7359.88G64271421731130.2574

7、.8559.3441.310G64881626633203.21196.21168921.512G652816318402871782.11736.91387.914G66091834438322.52138.821091669.316G66091839544413.9-28642297.618G665102044444442.3-3319.52652.520G670102049149563.2-4473.33603.324G680102059059771.8-6714.25535.4口徑、閥 種、磅級閥桿 直徑螺距導程行程圈數(shù)關閉力(KN)手輪關閉扭矩(N.M)雙頭螺紋 關閉扭矩 (N.M)

8、單頭螺紋 關閉扭矩 (N.M)2GL120442155.253.810.52-1/2GL124552558.873.221.33GL1265533711.3102.529.24GL1306636618.7176.856.45GL1326643731.2250.698.56GL1326651841.4267.5130.88GL1366650871418.6245.510GL146887710109826.5486.312GL152888911154.81342.1760.514GL1609911112187.12071.51055.516GL165101012813247.52420.71519

9、.82GL3204420513.276.626.52-1/2GL324552652012148.33GL3265529628.916074.74GL3326636647.9311151.55GL3407766977.3601300.56GL34688506107.6877.8480.58GL352885061811452.7888.910GL36099768283.426021598.212GL3651010909402.43648.724712GL6265521426.1174.267.52-1/2GL6306625440.4247.2121.83GL6326629557.7382.1182.44GL6407737595.7746.7371.95GL64688425149.