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["Блокировочный клап",,"Блокировочный клапан относсяется кнны к воздухопусковому клапан или воздухозакрываемому клапану?",,"Блокировочный клапан поддерживает положение клапана при сбое воздухопровос的压力",,"Блокировочный клапан обозначается как FL,,气动阀(FC故障关)和气关阀(FO故障开)之外的另一种形式,其原理是在气路中加入一个气控阀当气源压力正常时气路通阀门受控;当气源压力低到规定值时气控阀切断气路将空气封在执行机构中阀门不再动作即为保位国外设计中FL还进一步分为漂移开和漂移关因为阀门保位后由于仪表空气会有微量外漏此时阀趋向的方向就是漂移的方向。"

2017-11-20View Original

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保位阀是属于风开阀还是风关阀?
Reply #22017-11-20
保位阀是保持仪表风故障时的阀位不变,与风开、风关无关。
Reply #32017-11-20
保位阀即FL,是气开阀(FC故障关)、气关阀(FO故障开)之外的另一种型式,其原理就是在气路中加入一个气控阀,气源压力正常时气路通,阀门受控;气源压力低到规定值时,气控阀切断气路将空气封在执行机构中,阀门不再动作,即为保位。国外设计中FL还再进一步分为漂移开和漂移关,因为阀门保位后,由于仪表空气会有微量外漏,此时阀趋向的方向就是漂移的方向。

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