閥門扭矩計(jì)算-附表

1、閥門扭矩計(jì)算簡(jiǎn)解閥門扭矩計(jì)算的方法是什么 ？閥門扭矩是閥門一個(gè)重要參數(shù)，因此不少朋友都很關(guān)注閥 門扭矩計(jì)算的問題?，F(xiàn)提供一種閥門扭矩計(jì)算的。閥門扭矩計(jì)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(duì)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?cái)?shù)，單位為牛米（N.m）,電動(dòng)裝置和氣動(dòng)執(zhí)行器參考安全值取 閥門扭矩的1.5倍。閥門在設(shè)計(jì)時(shí)，選用執(zhí)行器是靠估算，基本分為三部分：1、密封件見的摩擦力矩（球體與閥座）2、填料對(duì)閥桿的摩擦力

2、矩3、軸承對(duì)閥桿的摩擦力矩故計(jì)算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(jì)算的力矩乘1.31.5倍以選執(zhí)行器。閥門扭矩計(jì)算要兼顧閥板與閥座的摩擦，閥軸與填料的摩擦， 介質(zhì)不同壓差下對(duì)閥板的推力。因?yàn)殚y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(shí)測(cè)而不是計(jì)算。閥門扭矩計(jì)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(jì)算并沒有實(shí)驗(yàn)得出的結(jié)果更精確。名詞解釋：扭矩扭矩是使物體發(fā)生轉(zhuǎn)動(dòng)的力。發(fā)動(dòng)機(jī)的扭矩就是指發(fā)動(dòng)機(jī)從曲軸端輸出的力矩。 在功率 固定的條件下它與發(fā)動(dòng)機(jī)轉(zhuǎn)速成反比關(guān)系，

3、轉(zhuǎn)速越快扭矩越小， 反之越大，它反映了汽車在 一定范圍內(nèi)的負(fù)載能力。附錄；閘閥、截止閥閥桿直徑、行程、關(guān)閉推力及扭矩?cái)?shù)據(jù)口徑、閥 種、磅級(jí)閥桿 直徑螺距導(dǎo)程行程單頭 螺紋 圈數(shù)關(guān)閉力（KN）手輪關(guān)閉 總扭矩（N.M）雙頭螺紋 關(guān)閉扭矩（N.M）單頭螺關(guān) 閉扭矩（N.M）2G13/44.234.2359149.127.6/ 70-17.82-1/2G13/44.234.23751810.532.5/ 70-20.73G1784.234.23862012.143.3/ 80-28.74G126551132315.359.2/ 90-38.65G130661402322.2100-65.46G130

4、6121662824.413293.871.88G1326122183631178.9124.19610G1366122704543.6274.5188.1148.412G1407143224659417287.8225.214G1427143515070360.7352277.716G1468164085188.7529.6517.5388.618G14881646258110644.5629.8496.820G15281651564139.1862.5841.8672.724G16091862269201.81430.61396.61120.42G33/44.234.23601413.14

5、0.4/ 70-25.82-1/2G33/44.234.23751814.745.2/ 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

6、.816G348816406512131254.21224.2965.718G352816451562621621.915851266.520G35591851057289-1890.51495.824G365102061361413.5-3101.42478.22G63/44.234.23611419.960.4/ 80-392-1/2G6784.234.23751824.286.8-57.53G62655871730.4117.9-76.94G630661151947.9215.7-141.15G636661422469.2372.2-235.26G6407141682494.3666.1

7、459.7359.88G64271421731130.2574.8559.3441.310G64881626633203.21196.21168921.512G652816318402871782.11736.91387.914G66091834438322.52138.821091669.316G66091839544413.9-28642297.618G665102044444442.3-3319.52652.520G670102049149563.2-4473.33603.324G680102059059771.8-6714.25535.4口徑、閥 種、磅級(jí)閥桿 直徑螺距導(dǎo)程行程圈數(shù)關(guān)閉

8、力(KN)手輪關(guān)閉扭矩(N.M)雙頭螺紋 關(guān)閉扭矩 (N.M)單頭螺紋 關(guān)閉扭矩 (N.M)2GL120442155.253.810.52-1/2GL124552558.873.221.33GL1265533711.3102.529.24GL1306636618.7176.856.45GL1326643731.2250.698.56GL1326651841.4267.5130.88GL1366650871418.6245.510GL146887710109826.5486.312GL152888911154.81342.1760.514GL1609911112187.12071.51055.5

9、16GL165101012813247.52420.71519.82GL3204420513.276.626.52-1/2GL324552652012148.33GL3265529628.916074.74GL3326636647.9311151.55GL3407766977.3601300.56GL34688506107.6877.8480.58GL352885061811452.7888.910GL36099768283.426021598.212GL3651010909402.43648.724712GL6265521426.1174.267.52-1/2GL6306625440.4247.2121.83GL6326629557.7382.1182.44GL6407737595.7746.7371.95GL64688425149