关键字:ABB阀门定位器 http://www.abb-positioner.com/ ABB阀门定位器是按照平衡原理设计工作的,具体工作情况如下: 当ABB阀门定位器通入波纹管的信号压力增加时,使杠杆2绕支点转动,档板靠近喷嘴,喷嘴背压经放大器放大后,送入薄膜执行机构气室,使阀杆向下移动,并带动反馈杆(摆杆)绕支点转动,连接在同一轴上的反馈凸轮(偏心凸轮)也跟着作逆时针方向转动,通过滚轮使杠杆1绕支点转动,并将反馈弹簧拉伸、弹簧对杠杆2的拉力与信号压力作用在被纹管上的力达到力矩平衡时仪表达到平衡状态。 以上情况出现的时候,一定的信号压力与一定的阀门位置要相对应。上述的作用方式为正作用,如果要改变为反作用,只需要只要将凸轮翻转,A向变成B向等即可。正作用ABB阀门定位器,就是信号压力增加,输出压力亦增加;所谓反作用定位器,就是信号压力增加,输出压力则减少。一台正作用执行机构只要装上反作用定位器,就能实现反作用执行机构的动作;相反,一台反作用执行机构只要装上反作用ABB阀门定位器,就能实现正作用执行机构的动作。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地址:武汉市武昌区中南国际城d座一单元901室原文出处:http://www.abb-positioner.com/a/xwdt/74.htmlABSolute;top:0;border:0;width:undefinedpx;height:undefinedpx;" sandbox="allow-forms allow-pointer-lock 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?client=ca-pub-6745515041074118&ouTPUt=html&adk=1812271804&adf=3279755396&plat=1%3A32776%2C2%3A32776%2C8%3A32776%2C9%3A32776%2C16%3A8388608%2C17%3A32%2C24%3A32%2C25%3A32%2C30%3A1081344%2C32%3A32%2C40%3A32&guci=2.2.0.0.2.2.0.0&format=0x0&url=https%3A%2F%2Fwww.bizrobot.com%2Fcompany_bloginfo.php%3Fact%3D1&ea=0&flash=29.0.0&pra=5&wgl=1&dt=1589444472464&bpp=10&bdt=446&idt=28&shv=r20200511&cbv=r20190131&ptt=9&saldr=aa&cookie=ID%3D5fb7eae809183df8%3AT%3D1588147156%3AS%3DALNI_MZhOWs11HQ-EEy1X6tCtUAbNrQ6cw&crv=1&nras=1&correlator=7759634197856&frm=23&ife=1&pv=2&ga_vid=1462300706.1589444473&ga_sid=1589444473&ga_hid=39810795&ga_fc=0&iag=3&icsg=42&nhd=1&dssz=4&mdo=0&mso=0&u_tz=480&u_his=4&u_java=0&u_h=1080&u_w=1920&u_ah=1030&u_aw=1920&u_cd=24&u_nplug=16&u_nmime=33&adx=-12245933&ady=-12245933&biw=1332&bih=649&isw=730&ish=360&ifk=2699508910&scr_x=0&scr_y=0&eid=21065532%2C21066085&oid=3&pvsid=3315311050150690&pem=16&ref=https%3A%2F%2Fwww.bizrobot.com%2Fcompany_bloginfo.php&rx=0&eae=2&fc=1920&brdim=0%2C0%2C0%2C0%2C1920%2C0%2C1920%2C1030%2C730%2C360&vis=1&rsz=%7C%7Cs%7C&abl=NS&fu=8220&bc=31&ifi=0&uci=0.t8ckfelnprhl&fsb=1&dtd=58" marginwidth="0" marginheight="0" vspace="0" hspace="0" allowtransparency="true" scrolling="no" allowfullscreen="true" data-google-container-id="0.t8ckfelnprhl" data-load-complete="true"> |