</noscript> <script> function stop() { return false; } document.oncontextmenu = stop; </script> <form name="aspnetForm" method="post" action="search" id="aspnetForm"> <div> <input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="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" /> </div> <div> <input type="hidden" name="__VIEWSTATEGENERATOR" id="__VIEWSTATEGENERATOR" value="82A64ACB" /> </div> <div class="headwarp"> <div class="head"> <div class="logo"><a href="/index.html"><img src="/images/logo.jpg" alt="浙江盛兴石油设备有限公司" /></a></div> <div class="right"> <div class="top"> <img src="/images/companyname.jpg" alt="浙江盛兴石油设备有限公司" /> </div> <div class="bot"> <a href="/index.html">首页</a> ｜ <a href="/about.html">公司简介</a> ｜ <a href="/product.html">产品中心</a> ｜ <a href="/news.html">新闻中心</a> ｜ <a href="/feedback.html">售后服务</a> ｜ <a href="/contact.html">联系我们</a> ｜ <a href="http://www.usn-tech.com" class="STYLE1" style=" font-family:Arial;">ENGLISH</a> </div> </div> </div> <div class="banner"> <!-- 代码 开始 --> <div id="full-screen-slider"> <ul id="slides"> <li style="background:url('/images/ban1.jpg') no-repeat"></li> <li style="background:url('/images/ban2.jpg') no-repeat"></li> <li style="background:url('/images/ban3.jpg') no-repeat"></li> <li style="background:url('/images/ban4.jpg') no-repeat"></li> </ul> </div> <!-- 代码 结束 --> </div> </div> <div class="mainwarp"> <div class="main"> <div class="aboutcon"> <div class="headtitle"> <font class="lotaction">当前位置：<a href="/index.html">首页</a> > <a href="/news.html">新闻中心</a> >自封加油枪的自封原理</font>新闻中心 </div> <div class="aboutcon-main"> <div class="amcnewstitle"><h3>自封加油枪的自封原理</h3></div> <div class="amcnewssourse">作者：浙江盛兴石油设备有限公司 来源：http://www.usn-fc.com/ 发布于：2015-09-25 15:17:05 <a href="javascript:window.close()">[关闭窗口]</a></div> <div class="am-ncon"> <div style="text-align:center;"> <img src="/upload/201509/25/201509251516528115.jpg" alt=" 自封加油枪" style="line-height:1.5;" /> </div> 当我们用手向上抬起开关把的时候主阀开启，高压油推开副阀经油枪嘴向受油容器供油，当高压油流过副阀时候，由于液流的空吸作用，使开关膜上腔压力降低，但因开关膜上腔通过转接套斜孔、进气管、油枪嘴前端进气嘴与外界相通，外界空气不断地补充进开关膜上腔，故开关膜上腔仍与下腔压力相等(均等于大气压力)，开关膜处于平衡位置，当受油容器中的液面淹没油枪嘴上的进气孔的那一瞬间，油液还在继续向受油容器中供油，空吸作用还在继续，这时开关膜上腔与外界大气隔绝形成负压，而开关膜下腔仍保持大气压，因而开关膜上、下腔间形成压力差ΔP，当ΔP增大到一定值时，开关膜克服弹簧压力，向上拱起并使与之固定的自封杆向上移动，钢球被挤落到自控杆孔内，自控杆在开关把的拉力作用下向下移动，主阀顶杆因开关把支点下移而向下移动，主阀关闭，供油停止，即油枪自封。<br /> 这就是油枪的自动控制原理，如果概括成一句话来说的话就是：“大气压力差的原理”。<br /> 本文整理由浙江盛兴石油设备有限公司转载请注明http://www.usn-fc.com/<br /> <div style="line-height: 30px; padding-top: 10px; padding-bottom: 10px;"> <span class="ppprev"><strong>上一篇：</strong><a href="/news/newsshow-379.html">如何提高加油枪的工作效率</a></span><br> <span class="ppnext"><strong>下一篇：</strong><a href="/news/newsshow-381.html">自封加油枪不自封的故障解决</a></span> </div> <div style="width:500px; height:26px; clear:both; margin-top:10px; padding-left:23px; line-height:26px; background:#F0F0F0">最新新闻</div> <div style="width:515px; margin-left:0; padding-bottom:20px;"> <ul> <li style="border-bottom:1px dashed #333; padding-left:15px; height:26px;"><span style="float:right">2019-01-09</span> <a href="/news/newsshow-467.html" style=" display:block; float:left; width:400px; height:26px; line-height:26px;">> 加油枪“猫腻”？</a> </li> <li style="border-bottom:1px dashed #333; padding-left:15px; height:26px;"><span style="float:right">2018-12-26</span> <a href="/news/newsshow-466.html" style=" display:block; float:left; width:400px; height:26px; line-height:26px;">> 避免“静电”——加油枪</a> </li> <li style="border-bottom:1px dashed #333; 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