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class="main-fl fr"> <div id="rwoh1ikca" class="show-pro1"> <div id="rwoh1ikca" class="imgfd"><img src="/upload/1/cms/content/1709793554378.png" alt="氣體泄漏的原因與檢查"></div> <div id="rwoh1ikca" class="txt"> <div id="rwoh1ikca" class="box"> <h1>氣體泄漏的原因與檢查</h1> <div id="rwoh1ikca" class="des"> </div> <a class="ind-more">聯(lián)系我們 →</a> </div> </div> </div> <div id="rwoh1ikca" class="c"></div> <div id="rwoh1ikca" class="show-pro2"> <div id="rwoh1ikca" class="box"> <div id="rwoh1ikca" class="tit-pro"><span>詳情介紹</span></div> <div id="rwoh1ikca" class="des" id="maximg"> <p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;text-indent:0;padding:0 0 0 0 ;line-height:27px;background:rgb(255,255,255)"><span style="font-family: 宋體;color: rgb(102, 100, 100);letter-spacing: 0;font-size: 19px">氣體泄漏的原因與檢查</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;text-indent:0;padding:0 0 0 0 ;line-height:27px;background:rgb(255,255,255)"><span style="font-family: 宋體;color: rgb(102, 100, 100);letter-spacing: 0;font-size: 19px"><span style="font-family:宋體">氣體絕緣金屬封閉開(kāi)關(guān)設備</span><span style="font-family:宋體">(GIS)具有許多優(yōu)點(diǎn)，因此得到了廣泛的應用。在實(shí)際運行中，會(huì )發(fā)現一些影響GIS開(kāi)關(guān)設備安全運行的不利因素，其中SF6氣體泄漏是GIS開(kāi)關(guān)設備普遍存在的問(wèn)題。通過(guò)查閱文獻，對GIS開(kāi)關(guān)柜SF6氣體泄漏的原因及檢測方法進(jìn)行了分析。</span></span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;text-indent:0;padding:0 0 0 0 ;line-height:27px;background:rgb(255,255,255)"><span style="font-family: 宋體;color: rgb(102, 100, 100);letter-spacing: 0;font-size: 19px">漏氣原因檢查</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;text-indent:0;padding:0 0 0 0 ;line-height:27px;background:rgb(255,255,255)"><span style="font-family: 宋體;color: rgb(102, 100, 100);letter-spacing: 0;font-size: 19px">1.GIS簡(jiǎn)介氣體絕緣金屬封閉開(kāi)關(guān)設備(GIS)是指六氟化硫封閉組合電器，在國際上被稱(chēng)為“氣體絕緣開(kāi)關(guān)設備”(簡(jiǎn)稱(chēng)GIS)，它包括斷路器、隔離開(kāi)關(guān)、接地開(kāi)關(guān)、電壓互感器、電流互感器、避雷器、母線(xiàn)、電纜端子、進(jìn)、出口套管等。通過(guò)優(yōu)化設計有機地結合在一起。它是我們經(jīng)?？吹降拈_(kāi)關(guān)站，也叫高壓配電裝置。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;text-indent:0;padding:0 0 0 0 ;line-height:27px;background:rgb(255,255,255)"><span style="font-family: 宋體;color: rgb(102, 100, 100);letter-spacing: 0;font-size: 19px"><span style="font-family:宋體">我廠(chǎng)</span><span style="font-family:宋體">220 kV變電站采用河南平高電氣有限公司生產(chǎn)的ZF11-252(L)型間隔GIS開(kāi)關(guān)柜，自投入運行以來(lái)運行穩定。然而，SF6氣體泄漏是GIS開(kāi)關(guān)設備普遍存在的問(wèn)題。結合文獻資料，分析了GIS開(kāi)關(guān)設備SF6氣體泄漏的原因，為今后的運行維護工作提供參考。</span></span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;text-indent:0;padding:0 0 0 0 ;line-height:27px;background:rgb(255,255,255)"><span style="font-family: 宋體;color: rgb(102, 100, 100);letter-spacing: 0;font-size: 19px">2。SF6泄漏的危害</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;text-indent:0;padding:0 0 0 0 ;line-height:27px;background:rgb(255,255,255)"><span style="font-family: 宋體;color: rgb(102, 100, 100);letter-spacing: 0;font-size: 19px">(1)SF6氣體是一種無(wú)毒、無(wú)色、無(wú)味、化學(xué)性質(zhì)極穩定的物質(zhì)，具有良好的電絕緣性能和良好的滅弧性能，但在高溫或電弧作用下，SF6可分解為氟化氫、二氧化硫、四氟硫、硫化氫等有毒物質(zhì)。因此，SF6的漏風(fēng)會(huì )造成環(huán)境污染，危害人體健康。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;text-indent:0;padding:0 0 0 0 ;line-height:27px;background:rgb(255,255,255)"><span style="font-family: 宋體;color: rgb(102, 100, 100);letter-spacing: 0;font-size: 19px">(2)GIS泄漏會(huì )導致水進(jìn)入GIS室內，導致SF6微水含量增加，電氣絕緣降低，滅弧性能下降，影響設備的安全運行。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;text-indent:0;padding:0 0 0 0 ;line-height:27px;background:rgb(255,255,255)"><span style="font-family: 宋體;color: rgb(102, 100, 100);letter-spacing: 0;font-size: 19px">(3)GIS泄漏降低了氣體壓力，降低了絕緣，削弱了滅弧能力，甚至導致了氣體密度繼電器的報警和閉鎖開(kāi)關(guān)的動(dòng)作，導致故障時(shí)斷電范圍的擴大。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;text-indent:0;padding:0 0 0 0 ;line-height:27px;background:rgb(255,255,255)"><span style="font-family: 宋體;color: rgb(102, 100, 100);letter-spacing: 0;font-size: 19px">(4)維護費用增加。由于GIS泄漏時(shí)需要及時(shí)補充SF6氣體，SF6氣體的價(jià)格相對較高，這將增加運行維護成本，大大增加運行成本。γ</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;text-indent:0;padding:0 0 0 0 ;line-height:27px;background:rgb(255,255,255)"><span style="font-family: 宋體;color: rgb(102, 100, 100);letter-spacing: 0;font-size: 19px">3.SF6泄漏的原因是GIS對材料、加工工藝和裝配，特別是對氣體密封的要求很高。通過(guò)對我國電力系統SF6開(kāi)關(guān)設備實(shí)際運行情況的初步了解，或多或少存在SF6氣體泄漏問(wèn)題，這與GSI的制造、安裝和維護質(zhì)量密切相關(guān)。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;text-indent:0;padding:0 0 0 0 ;line-height:27px;background:rgb(255,255,255)"><span style="font-family: 宋體;color: rgb(102, 100, 100);letter-spacing: 0;font-size: 19px"><span style="font-family:宋體">主要內容如下：</span><span style="font-family:宋體">(1)設備制造質(zhì)量問(wèn)題，如殼體砂巖缺陷、密封材料加工焊接裂紋、密封環(huán)質(zhì)量與密封槽質(zhì)量不匹配、密度繼電器質(zhì)量缺陷等。</span></span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;text-indent:0;padding:0 0 0 0 ;line-height:27px;background:rgb(255,255,255)"><span style="font-family: 宋體;color: rgb(102, 100, 100);letter-spacing: 0;font-size: 19px">(2)安裝維護質(zhì)量問(wèn)題，如裝配過(guò)程中密封工藝處理不當、密封環(huán)安裝失敗、密封圈損壞、有劃痕、磨?；蛄鸭y的密封面操作不當、密封端面螺栓松開(kāi)等。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;text-indent:0;padding:0 0 0 0 ;line-height:27px;background:rgb(255,255,255)"><span style="font-family: 宋體;color: rgb(102, 100, 100);letter-spacing: 0;font-size: 19px">(三)設備在運行中的振動(dòng)和密封材料的老化引起的泄漏。γ</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;text-indent:0;padding:0 0 0 0 ;line-height:27px;background:rgb(255,255,255)"><span style="font-family: 宋體;color: rgb(102, 100, 100);letter-spacing: 0;font-size: 19px">4.SF6泄漏檢測方法</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;text-indent:0;padding:0 0 0 0 ;line-height:27px;background:rgb(255,255,255)"><span style="font-family: 宋體;color: rgb(102, 100, 100);letter-spacing: 0;font-size: 19px">在運設備的檢查</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;text-indent:0;padding:0 0 0 0 ;line-height:27px;background:rgb(255,255,255)"><span style="font-family: 宋體;color: rgb(102, 100, 100);letter-spacing: 0;font-size: 19px"><span style="font-family:宋體">主要內容如下：</span><span style="font-family:宋體">(1)變電站運行人員應在日常檢查中仔細記錄各時(shí)段的煤氣壓力，并與近期記錄進(jìn)行比較，看壓力值是否明顯下降，并初步判斷是否存在漏氣現象。</span></span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;text-indent:0;padding:0 0 0 0 ;line-height:27px;background:rgb(255,255,255)"><span style="font-family: 宋體;color: rgb(102, 100, 100);letter-spacing: 0;font-size: 19px">(2)檢查中發(fā)現有刺激性氣味，容易發(fā)生大量氣體泄漏。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;text-indent:0;padding:0 0 0 0 ;line-height:27px;background:rgb(255,255,255)"><span style="font-family: 宋體;color: rgb(102, 100, 100);letter-spacing: 0;font-size: 19px">(3)如果某艙室壓力有下降趨勢，需要在6個(gè)月內填滿(mǎn)一次，應予以重視。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;text-indent:0;padding:0 0 0 0 ;line-height:27px;background:rgb(255,255,255)"><span style="font-family: 宋體;color: rgb(102, 100, 100);letter-spacing: 0;font-size: 19px">(4)在大修試驗中，如果微水值超過(guò)標準，也可判斷室內存在滲漏。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;text-indent:0;padding:0 0 0 0 ;line-height:27px;background:rgb(255,255,255)"><span style="font-family: 宋體;color: rgb(102, 100, 100);letter-spacing: 0;font-size: 19px">常用檢漏方法：</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;text-indent:0;padding:0 0 0 0 ;line-height:27px;background:rgb(255,255,255)"><span style="font-family: 宋體;color: rgb(102, 100, 100);letter-spacing: 0;font-size: 19px">(1)皂泡法檢漏。該方法是一種比較簡(jiǎn)單、通用的方法，用于對設備的運行情況進(jìn)行初步檢查。在可能漏水的地方用刷子刷肥皂。如果水泡出現，就會(huì )有漏洞。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;text-indent:0;padding:0 0 0 0 ;line-height:27px;background:rgb(255,255,255)"><span style="font-family: 宋體;color: rgb(102, 100, 100);letter-spacing: 0;font-size: 19px">(2)使用SF6檢漏器。靈敏度為1 ppm的SF6氣體泄漏檢測儀用于沿殼體焊縫、密封面、管接頭等緩慢移動(dòng)，速度不超過(guò)2.5mm/s。當SF6探測器讀數為0時(shí)，密封性能良好。根據實(shí)際經(jīng)驗，30以上的SF6探測器讀數被認為是泄漏。我們還可以用部分包裝的方法，用塑料薄膜一個(gè)接一個(gè)地包住氣體屏障的所有密封環(huán)節，并用膠帶密封邊緣。塑料布與試驗產(chǎn)品之間的間隙應保持在5mm左右。修整后24小時(shí)測定修整腔中SF6氣體濃度，并計算年泄漏量。</span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;text-indent:0;padding:0 0 0 0 ;line-height:27px;background:rgb(255,255,255)"><span style="font-family: 宋體;color: rgb(102, 100, 100);letter-spacing: 0;font-size: 19px"><span style="font-family:宋體">自去年以來(lái)，我廠(chǎng)</span><span style="font-family:宋體">220KV變電站吳中4Y97開(kāi)關(guān)逃逸側4Y972隔離器葉片氣室壓力計與以往值相比有下降趨勢，并已下降到報警壓力以下。平高廠(chǎng)家多次來(lái)廠(chǎng)檢測和確認C相分子篩存在泄漏現象。最近，在4Y97線(xiàn)路維護過(guò)程中，平高廠(chǎng)家與平高廠(chǎng)家的工作人員合作，補充泄漏室中的SF6氣體。γ</span></span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;text-indent:0;padding:0 0 0 0 ;line-height:27px;background:rgb(255,255,255)"><span style="font-family: 宋體;color: rgb(102, 100, 100);letter-spacing: 0;font-size: 19px"><span style="font-family:宋體">眾所周知，由于</span><span style="font-family:宋體">GIS設備的諸多優(yōu)點(diǎn)，它在各種變電站中得到了廣泛的應用，但在GIS的運行中經(jīng)常會(huì )出現SF6氣體泄漏等問(wèn)題。應從GIS設備的安裝、操作和維護等方面總結經(jīng)驗，提高各方面的管理水平，充分發(fā)揮GIS設備的優(yōu)勢。</span></span></p><p style="margin-top:5px;margin-right:0;margin-bottom:5px;margin-left:0;text-indent:0"><span style="font-family: 宋體;letter-spacing: 0;font-size: 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