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class="5t3f9hh" id="shownews"> <h1 class="title">負(fù)壓排水的水封誤區(qū)</h1> <div id="pbphjvt" class="hits"> 點(diǎn)擊次數(shù)：<span id="hitnum"></span> 更新時(shí)間：21/10/28 11:09:10 來源：<a href="http://"></a> 【<a href="javascript:self.close()">關(guān)閉</a>】 <span style="float:left;">分享: </span> <span> <script>window._bd_share_config={"common":{"bdSnsKey":{},"bdText":"","bdMini":"2","bdPic":"","bdUrl":'http:///article/show/sid/1130/id/312.html',"bdStyle":"0","bdSize":"16"},"share":{}};with(document)0[(getElementsByTagName('head')[0]||body).appendChild(createElement('script')).src='http://bdimg.share.baidu.com/static/api/js/share.js?v=89860593.js?cdnversion='+~(-new Date()/36e5)];</script> </span> </div> <ul style=" margin:10px 0px;"> </ul> <div id="5l357bp" class="text editor"> 負(fù)壓排水是一種比較新型的排水系統(tǒng)，在進(jìn)行水封時(shí)，有哪些誤區(qū)呢？以下是小編的整理：<br /> 　 1.水封深度越小，水封的排水能力越大，而水封防止管道內(nèi)氣體逸出的能力越低。反之亦然。<br /> 2.排水立管排水時(shí)，管內(nèi)負(fù)壓一定不能穿透水封，否則，由于管內(nèi)負(fù)壓的吸入，水封必然會(huì)丟失。<br /> 3.水封只有能承受管內(nèi)-40mmH2O的負(fù)壓，才能承受管內(nèi)40mmH2O的正壓。<br /> 4.負(fù)壓抽吸、正壓噴濺、自虹吸、慣性晃動(dòng)、蒸發(fā)和毛細(xì)作用都會(huì)對水封產(chǎn)生不利影響。<br /> 5.水封深度不應(yīng)小于50毫米。<br /> <p style="text-align:center;"> 　　<img src="/Upload/thumb_617a14784de05.png" width="350" height="186" title="負(fù)壓排水" alt="負(fù)壓排水" /> </p> <p> 當(dāng)管道中的壓力大于外部壓力時(shí)，水封防止管道中的氣體逸出并污染室內(nèi)空氣。因此，當(dāng)管道處于正壓時(shí)，我們應(yīng)該注意的是水封的性能。對于管內(nèi)負(fù)壓水封的性能，我們要求水封在管內(nèi)負(fù)壓作用后不能失去防止管內(nèi)氣體逸出的功能。 </p> 通過這些描述，相信大家對負(fù)壓排水的了解越來越深入，希望以上內(nèi)容對你有幫助。<br /> 小編：Nancy<br /></div> <div id="5fldjht" class="page" style="clear:both;"> 上一條： <a href="http:///hyzx/zswd/show314.html">真空排水在真空運(yùn)輸中的應(yīng)用</a> <br> 下一條：沒有了 <br> </div> <h4 class="related"><span style="font-weight:bold;height:30px;line-height:30px;font-size:13px; padding-left:10px">負(fù)壓排水相關(guān)資料</span></h4> <ul class="related-list"> <li><a target="_blank" title="負(fù)壓排水使用時(shí)會(huì)遇到的問題" 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