选择阀门电动装置应注意的问题

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+ '&title=' + title + '&pic=' + imageUrl); } //qq好友接口的传参 if (types == 'qqim') { window.open('http://connect.qq.com/widget/shareqq/index.html?url=' + url + '&title=' + title + '&pics=' + imageUrl + '&summary=' + description + '&desc=' + keywords); } //生成二维码给微信扫描分享 if (types == 'weixin') { //在线二维码（服务器性能限制，仅测试使用，屏蔽非大陆ip访问） window.open('https://www.a-bm.cn/share.aspx?url=' + url); } } </script> </div> <link rel='stylesheet' type='text/css' href='/css/xwt-notice.css?v=1111' /> <link rel='stylesheet' type='text/css' href='/Font/font_2941626/iconfont.css' /> <script type='text/javascript' src='/JavaScript/soundmanager2-nodebug-jsmin.js'></script> <script>!window.jQuery && document.write('<script src=\'https://public.mtnets.com/Plugins/jQuery/2.2.4/jquery-2.2.4.min.js\'>'+'</scr'+'ipt>');</script> <script type='text/javascript' src='/js/XwtEnclosure.js?v=202411230822'></script> <script type='text/javascript' src='/js/AdvertiseTotle.js?v=202411230822'></script> </body> </html> </div>  <span class="guanzhu gz-btn"><a href="javascript:void(0);" target="_parent" onclick="OpFollowMTSPUser()"></a></span> <span class="sc-btn shoucang"><a onclick="OpCollect()" target="_parent"></a></span> </div> <input type='hidden' id="CurrUserID" value="556"> <input type='hidden' id="CurrCompanyID" value="533"> <input type='hidden' id="CurrMTSPUserID" value="1286041"> <input type='hidden' id="OpCollect_Title" value="选择阀门电动装置应注意的问题"> <input type='hidden' id="OpCollect_OpareteType" value="1"> <input type='hidden' id="OpCollect_ObjectID" value="1286041"> <input type='hidden' id="OpCollect_ObjectType" value="13"> <input type='hidden' id="OpCollect_PictureUrl" value=""> <script type="text/javascript" src="/js/Common.js" ></script> <script type="text/javascript" >IsExitMTSPFollow()</script> </div> <div class="newsContent"> <div>　　阀门电动装置是用于操作阀门并于阀门相连接的装置之一。该装置由电力来驱动，其运动过程可由行程、转矩或轴向推力的大小来控制。由于阀门电动装置应有的工作特性和利用率取决于阀门的种类、装置的工作规范及阀门在管线或设备上的位置。因此掌握阀门电动装置正确的选择；考虑防止超负荷(工作转矩高于控制转矩)的发生就成为至关重要的一环。<br /> </div><div>　　阀门电动装置的正确选择应依据：<br /> </div><div>　　1.操作力矩：操作力矩是选择阀门电动装置的*主要的参数。电动装置的输出力矩应为阀门操作*大力矩的1.2～1.5倍。<br /> </div><div>　　2.操作推力：阀门电动装置的主机结构有两种，一种是不配置推力盘的，此时直接输出力矩；另一种是配置有推力盘的，此时输出力矩通过推力盘中的阀杆螺母转换为输出推力。<br /> </div><div>　　3.输出轴转动圈数：阀门电动装置输出轴转动圈数的多少与阀门的公称通径、阀杆螺距、螺纹头数有关，按M=H/ZS计算(式中：M为电动装置应满足的总转动圈数；H为阀门的开启高度，mm；S为阀杆传动螺纹的螺距，mm；Z为阀杆螺纹头数。)<br /> </div><div>　　4.阀杆直径：对于多回转类的明杆阀门来说，如果电动装置允许通过的*大阀杆直径不能通过所配阀门的阀杆，便不能组装成电动阀门。因此，电动装置空心输出轴的内径必须大于明杆阀门的阀杆外径。对于部分回转阀门以及多回转阀门中的暗杆阀门，虽不用考虑阀杆直径的通过问题，但在选配时亦应充分考虑阀杆直径与键槽的尺寸，使组装后能正常工作。<br /> </div><div>　　5.输出转速：阀门的启、闭速度快，易产生水击现象。因此，应根据不同的使用条件，选择恰当的启、闭速度。<br /> </div><div>　　6.安装、连接方式：电动装置的安装方式有垂直安装、水平安装、落地安装；连接方式为：推力盘；阀杆通过(明杆多回转阀门)；暗杆多回转；无推力盘；阀杆不通过；部分回转电动装置的用途很广，是实现阀门程控、自控和遥控不能缺少的设备，其主要用在闭路阀门上。但不能忽视阀门电动装置的特殊要求——必须能够限定转矩或轴向力。通常阀门电动装置采用限制转矩的连轴器。</div> </div> <div class="news-keyword" style="margin-bottom:20px; font-size:16px; font-family:microsoft yahei;" >关键词：<a href="https://www.hbzhan.com/chanpin-9339.html" target="_blank" style="color: 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选择阀门电动装置应注意的问题_环保在线