关键字:阀门定位器 http://www.samson-china.com/ 阀门定位器安装时请遵守如下事项:为了防止系统停机要通过旁通阀类似的装置把控制阀从系统中隔离;执行机构内部不能留有空压;安装前必须完全切断阀门执行机构和其他周边附件的所有气源信号和输入信号。 阀门定位器的动作原理是为了打开阀门增加电流信号,力矩马达产生电磁场,挡板受电磁场力远离喷嘴。喷嘴和挡板间距变大,排出先导阀内部的线轴上方气压。受其影响线轴向右边移动,推动挡住底座的阀芯,气压通过底座输入到执行机构。 阀门定位器随着执行机构气室内部压力增加,执行机构推杆下降,通过反馈杆把执行机构推杆的位移变化传达到滑板。这个位移变化又传达到量程反馈杆,拉动量程弹簧。 当量程弹簧和力矩马达的力保持平衡时,挡板回到原位,减小与喷嘴间距,随着通过喷嘴排出空气量的减小,线轴上方气压增加,线轴回到原位,阀芯重新堵住底座,停止气压输入到执行机构。当执行机构的运动停止时,阀门定位器保持稳定状态。德科蒙过程控制(武汉)有限公司座机:027-88062221传真:027-88068180邮箱: sales@whdkm.com原文出处:http://www.samson-china.com/a/xwzx/297.htmlABSolute;top:0;border:0;width:undefinedpx;height:undefinedpx;" sandbox="allow-forms allow-popUPS allow-popups-to-escape-sandbox allow-same-origin allow-scripts allow-top-navigation-by-user-activation" frameborder="0" src="https://googleads.g.doubleclick.net/pagead/ads?guci=2.2.0.0.2.2.0.0&client=ca-pub-6745515041074118&ouTPUt=html&adk=1812271804&adf=3279755396&plat=1%3A32776%2C2%3A32776%2C8%3A134217728%2C9%3A134250504%2C10%3A32%2C11%3A32%2C16%3A8388608%2C17%3A32%2C24%3A32%2C25%3A32%2C30%3A1081344%2C32%3A32%2C40%3A32&format=0x0&url=https%3A%2F%2Fwww.bizrobot.com%2Fcompany_bloginfo.php%3Fact%3D1&ea=0&flash=32.0.0&pra=5&wgl=1&tt_state=W3siaXNzdWVyT3JpZ2luIjoiaHR0cHM6Ly9hZHNlcnZpY2UuZ29vZ2xlLmNvbSISInN0YXRlIjowfSx7Imlzc3Vlck9yaWdpbiI6Imh0dHBzOi8vYXR0ZXN0YXRpb24uYW5kcm9pZC5jb20iLCJzdGF0ZSI6MH1d&dt=1607330218533&bpp=5&bdt=65&idt=368&shv=r20201201&cbv=r20190131&ptt=9&saldr=aa&cookie=ID%3D5fb7eae809183df8-22fd78660ec40024%3AT%3D1602660717%3ART%3D1602660717%3AS%3DALNI_MYMQQp2TnvCbvJQtTRQsdNX_-71Bg&nras=1&correlator=7189972131194&frm=23&ife=1&pv=1&ga_vid=1072108534.1607330219&ga_sid=1607330219&ga_hid=1632960390&ga_fc=0&nhd=1&u_tz=480&u_his=8&u_java=0&u_h=1080&u_w=1920&u_ah=1030&u_aw=1920&u_cd=24&u_nplug=17&u_nmime=34&adx=-12245933&ady=-12245933&biw=1243&bih=605&isw=730&ish=360&ifk=2699508910&scr_x=0&scr_y=0&eid=21066699%2C21066792&oid=3&pvsid=791606774639583&pem=16&ref=https%3A%2F%2Fwww.bizrobot.com%2Fcompany_bloginfo.php%3Fadd_suc%3D1&rx=0&eae=2&fc=1920&brdim=0%2C0%2C0%2C0%2C1920%2C0%2C1920%2C1030%2C730%2C360&vis=2&rsz=%7C%7Cs%7C&abl=NS&fu=8204&bc=31&ifi=0&uci=0.s369skzfd3bm&fsb=1&dtd=393" marginwidth="0" marginheight="0" vspace="0" hspace="0" allowtransparency="true" scrolling="no" allowfullscreen="true" data-google-container-id="0.s369skzfd3bm" data-load-complete="true"> |