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</div> </a> </span> </div> <div id="dzndhd7" class="caseContainer"> <p> 自閉閥經(jīng)過(guò)將近二十年時(shí)間的發(fā)展，目前從各方面技術(shù)狀態(tài)已經(jīng)十分穩(wěn)定和成熟，對(duì)于戶內(nèi)燃?xì)獍踩谋Ｗo(hù)還是起到了積極的作用。<br /> <p style="text-align:center;white-space:nowrap;"> <img src="http://img.dlwjdh.com/upload/9827/211203/32d1a51abd6b2dea6d6a63b615eb3bdd.jpg" alt="陜西管道燃?xì)庾蚤]閥" width="400" height="300" title="陜西管道燃?xì)庾蚤]閥" align="" /> </p> <p style="text-align:center;white-space:nowrap;"> <br /> </p> 從技術(shù)角度講，自閉閥特別強(qiáng)調(diào)了這樣的概念：同時(shí)具有超壓自動(dòng)關(guān)閉、欠壓自動(dòng)關(guān)閉和過(guò)流自動(dòng)關(guān)閉功能，關(guān)閉時(shí)不借助外部動(dòng)力，關(guān)閉后需手動(dòng)開(kāi)啟。這些功能的要求實(shí)際上主要體現(xiàn)了對(duì)于目前戶內(nèi)燃?xì)馐鹿实闹饕憩F(xiàn)形式。戶內(nèi)安全這方面的表現(xiàn)形式，我們知道，一方面是用戶端的問(wèn)題，另一方面是輸配系統(tǒng)的問(wèn)題。<br /> <br /> 用戶端的問(wèn)題主要表現(xiàn)在用戶對(duì)于灶具的使用，安全這一方面有時(shí)候是忘記關(guān)閉，有時(shí)候是自動(dòng)熄火，有時(shí)候是水浸滅。這些目前就靠GB16410《家用燃?xì)庠罹摺菲渲袕?qiáng)制性的條款，就是熄火保護(hù)灶具，靠這個(gè)要求基本解決了事故的隱患。<br /> <br /> 但是在供氣端，情況比較復(fù)雜，有可能是供氣的質(zhì)量問(wèn)題，比如壓力過(guò)高、或者過(guò)低；也有膠管的老化脫落，老鼠的鼠患。這些現(xiàn)象實(shí)際上都能反映到供氣的壓力和流量的波動(dòng)和變化上。從管理的角度講，有時(shí)候很難及時(shí)的發(fā)現(xiàn)這些情況，因此產(chǎn)生一些事故的隱患。<br /> <br /> 從癥狀上講，這種事故的隱患一方面反映在超壓，反映在管道上就屬于壓力過(guò)高。超壓的案例還是比較多的，舉幾個(gè)例子。一個(gè)是陜西省榆林市的一個(gè)燃?xì)夤?，它的小區(qū)自管戶在管道接送置換過(guò)程中出現(xiàn)超壓情況。還有些是調(diào)壓設(shè)備，調(diào)壓器等調(diào)壓設(shè)備老化，老化的過(guò)程是燃?xì)鈮毫徛黾拥倪^(guò)程，如果中間沒(méi)有安全的防護(hù)，還是很難發(fā)現(xiàn)的。<br /> <br /> 從欠壓的角度來(lái)講，導(dǎo)致欠壓的原因有很多，比如：停氣、第三方破壞，或者冬季供氣壓力不足，壓力降低。這種現(xiàn)象還是比較普遍的。尤其像陜西地區(qū)（西安地區(qū)），雖然有氣源，但是一到冬季用氣高峰的時(shí)候，大面積停氣的現(xiàn)象還是比較普遍的。所以這些有可能會(huì)造成二次的泄露，或者次生的災(zāi)害。如果有一些手段能夠限制或者控制這種現(xiàn)象，對(duì)于用戶端的安全能夠起到一個(gè)積極的保障作用。<br /> <br /> 第三個(gè)是過(guò)流保護(hù)功能。過(guò)流保護(hù)功能本身，顧名思義就是超過(guò)額定流量，一定范圍。大家都知道，過(guò)流保護(hù)一定是由于管道泄漏、脫落、鼠咬，才產(chǎn)生的這種現(xiàn)象。當(dāng)發(fā)生過(guò)流現(xiàn)象的時(shí)候，需要一個(gè)設(shè)備能夠阻止這種現(xiàn)象的發(fā)生。<br /> <br /> 這三種現(xiàn)象，也就是我們目前戶內(nèi)輸配系統(tǒng)（管道系統(tǒng)）用戶端有可能遇到的事故的一些癥狀。<br /> <br /> 那么這些事故的癥狀體現(xiàn)出來(lái)的就是癥狀.終的誘因。癥狀實(shí)際上所體現(xiàn)的就是事故的誘因，如果能夠切斷這些誘因，對(duì)于安全來(lái)講是很有意義的。<br /> <br /> 這個(gè)是自閉閥基本的性能，就是超壓、欠壓、過(guò)流的保護(hù)。在基本性能里，有一些參數(shù)要求。這些參數(shù)的設(shè)定是經(jīng)過(guò)長(zhǎng)期實(shí)踐，以及與其他相關(guān)標(biāo)準(zhǔn)匹配才確定的。 </p> </div> <div id="htxrjx5" class="caseTab"> <ul> <li id="frjbrl5" class="col-xs-6 col-sm-6 col-md-6"> <a href="/meitibaodao/1764339.html">簡(jiǎn)單介紹管道燃?xì)獍踩蚤]閥工作原理和作用</a> </li> <li id="b5ptfb5" class="col-xs-6 col-sm-6 col-md-6"> <a href="/meitibaodao/1617145.html">邀請(qǐng)函｜《管道燃?xì)庾蚤]閥》CJ/T 447-2014修訂邀請(qǐng)</a> </li> </ul> </div> </div> </div> </div> </div> </div> </div> <script src="/templates/pc_wjdh/js/n/jquery.min.js"></script> <script src="/templates/pc_wjdh/js/n/bootstrap.min.js"></script> <script src="/templates/pc_wjdh/js/n/swiper-3.4.2.min.js"></script> <script src="/templates/pc_wjdh/js/n/rem.min.js"></script> <script src="/templates/pc_wjdh/js/n/qrcode.js"></script> <div id="hjndtf7" class="webq_bottom_contx"> <div 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