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#f30;"></span></p><p><span>產(chǎn)品關鍵詞：</span>常州化工泵用密封銷售價格,封</p><p><span>***更新：</span>2020-10-23 15:26:18</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="ihjbn8u" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">漣水創(chuàng)密機械制造有限公司</a></p><p><span>聯(lián)系人：</span>袁經(jīng)理</p><p><span>郵箱: </span>lscmjx@163.com</p><p><span>電話: </span>15250888877</p><p><span>傳真: </span>153_</p><p><span>網(wǎng)址: </span></p><p><span>手機: </span>153-66621921</p><p><span>地址: </span>高溝鎮(zhèn)高揚民營經(jīng)濟產(chǎn)業(yè)園</p><p>[當前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="xh3rtso" class="page-proshow02"><p class="title">詳細說明</p><div id="shewy7k" class="box"><p><p> 防止工作介質(zhì)從泵內(nèi)泄漏出來或者防止外界雜質(zhì)或空氣侵入到泵內(nèi)部的裝置或措施稱為密封，被密封的介質(zhì)一般為液體，常州化工泵用密封銷售價格、氣體或粉塵。 </p> <p> 造成泄漏的原因主要有兩個方面：一是密封面上有間隙。二是密封部位兩側(cè)存在壓力差，消除或減小任何一個因素都可以阻止或減小泄漏，達到密封的目的。泵的設計壓力和使用壓力是客觀存在不能減小，常州化工泵用密封銷售價格，所以泵的密封該解決的是消除或減小密封面之間的間隙，常州化工泵用密封銷售價格。這種間隙包括密封面之間的間隙和密封裝置本生內(nèi)部的間隙。 </p> <p> <br /> 密封件必須存放在密封包裝內(nèi)，避免和空氣中的水分或塵埃接觸。常州化工泵用密封銷售價格</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="常州化工泵用密封銷售價格,封" src="https://tyunfile.71360.com/UploadFile/lscmjx/637247293743222656/8640266.jpg"></div><p> 機械密封動、靜環(huán)之間的工作情況，大多數(shù)是處在邊界潤滑和半液體潤滑狀態(tài)下，而半液體潤滑能夠在摩擦系數(shù)較小即磨損與發(fā)熱令人滿意的情況下，獲得好的密封效果。 </p> <p> 機械密封的動、靜環(huán)之間的摩擦情況： </p> <p> 半液體潤滑： </p> <p> 滑動表面的凹坑處存有液體，接觸面之間維持一層很薄的液膜，所以發(fā)熱和磨損情況均較好，由于動、靜環(huán)之間的液膜在其出口處有表面張力，故限制了液體的泄露。 </p> <p> 完全液體潤滑： </p> <p> 但由于在這種情況下動、靜環(huán)之間的縫隙較大，故起不到密封作用，泄露嚴重。當動、靜環(huán)之間的壓力不足，而使間隙增大時，液膜增厚，這時不存在固體接觸，故無摩擦現(xiàn)象。在實際應用中一般不允許有這種情況出現(xiàn)（受控膜機械密封除外）。 </p> <p> 干摩擦： </p> <p> 滑動摩擦面上無液體進入，因而無液膜存在，塵土和氧化層，以及吸附的氣體分子等。當動、靜環(huán)運轉(zhuǎn)時，其結(jié)果必然是使摩擦面發(fā)熱、磨損加劇而造成泄露。、邊界潤滑： </p> <p> 由于表面不是特別平的，而是凹凸不平，在凸出會有接觸磨損，而在凹處則保持液體的潤滑性能，造成邊界潤滑。當動、靜環(huán)之間的壓力增大或者液體在摩擦面上形成液膜的能力較差時，液體將從間隙中被擠出。邊界潤滑的磨損和發(fā)熱程度為中等。鹽城清水密封哪家質(zhì)量好密封常用名稱：密封圈、盤根、機械密封、油封、水封、盤根、密封墊板、密封膠、軟填料、液壓、氣動密封件。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="常州化工泵用密封銷售價格,封" src="https://tyunfile.71360.com/UploadFile/lscmjx/637247293837011719/358206.jpg"></div><p> 密封的靈活性選擇 </p> <p> 主軸的軸向和徑向運動需要與彈簧之間保持一定的靈活性，以保證接觸面之間的密封。然而，只能提供一定程度的靈活性。液泵的機械狀況及其長度直徑比(一種主軸的直徑與其延伸長度之比的衡量方式，比值越低越好)對密封的可靠性起著重要的作用。密封的靈活性一般由一個大型主彈簧和一系列小彈簧或波紋密封裝置提供保證。 </p> <p> <span style="font-size:12px;">化學工業(yè)所采用的傳統(tǒng)密封設計，其密封壓力施加于旋轉(zhuǎn)面上，這種密封稱之為旋轉(zhuǎn)密封，因為彈簧或波紋密封裝置與主軸一起旋轉(zhuǎn)。比較新穎的設計，其彈簧或波紋密封裝置安裝于靜止面上。在現(xiàn)在的機械密封上，上述兩種密封方式都有非常普遍的應用，這樣對于安裝具有一定的靈活性。</span> </p> <p> <span style="font-size:12px;">早期設計的許多機械密封采用單一的大型彈簧圍繞主軸排列，在液泵起動過程中，可為密封面提供很強的密封力。密封的作用依靠主軸的旋轉(zhuǎn)來繃緊彈簧卷。</span> </p><p> 機械密封在電廠水泵中的應用改造 </p> <p> <p> 在新增的水泵中全部采用了機械密封，與原有水泵的盤根密封形成了鮮明的對比：（1）機械密封與盤根密封在密封性能上，機械密封要比盤根密封漏泄量小的多，*為盤根密封漏泄量的1%。（2）使用壽命長，兩年以內(nèi)無需更換，以往盤根密封每60天左右就要進行一次更換。（3）消耗功率較少同比盤根密封省電5%以上。（4）減少了軸或軸承的磨損。 </p> <p> 通過摸索對比先后將車間的兩臺循環(huán)水泵、兩臺射水泵、凝結(jié)水泵共6臺泵進行了進行密封改造。改造后均收到了良好的效果。 </p> <p> 循環(huán)水泵（20HBA）在未改為機械密封前，每年至少要更換4次油盤根，每次更換量在1公斤左右，市場價格30元.，由于盤根磨損所致3年左右需更換一根水泵軸及配套軸瓦，費用在7000元左右，不計人工費用每臺水泵每年消耗在2500元左右。而改為機械密封后費用方面每臺泵的機械密封價格在600元左右，至少一個大修期在3年以上，由于摩擦阻力的降低使電耗每小時下降8度，全年節(jié)電在58000度，降低成本3萬元左右。因此機械密封于盤根密封相比優(yōu)勢十分明顯。 </p> <p> <br /> </p> <p> <br /> </p> 機械密封的正常運行必須具備以下條件：泵軸的竄量不能太大。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="常州化工泵用密封銷售價格,封" src="https://tyunfile.71360.com/UploadFile/lscmjx/637247295161962890/6395142.jpg"></div><p> 低溫輕烴泵用機械密封 </p> <p> 多彈簧機械密封采用靜止結(jié)構(gòu)。 </p> <p> 采取增加非補償環(huán)尾部長度和采用副后蓋結(jié)構(gòu)等措施，增加輕烴泵機械密封的抗抽空能力。 </p> <p> 采用靜環(huán)背冷措施。 </p> <p> 對介質(zhì)易汽化的輕烴泵軸封我們增設背部冷卻,在軸封正常操作時,可對端面溫度進行調(diào)節(jié),使相變半徑靠近內(nèi)徑,增大液膜比例。在泵抽空時,由于端面溫度降低,使閃蒸壓力降低,對防止端面分離有積極作用。 </p> <p> 摩擦副材料的選取。 </p> <p> 對摩擦副材料的選取我們采用“SiC-C”結(jié)構(gòu)。輔助密封材料選擇耐低溫的硅橡膠材料。 </p> <p> 采用自沖洗措施。 </p> <p> 通過沖洗來提高密封腔壓力以防止抽空造成的密封干摩擦。自沖洗措施不*可保證密封腔內(nèi)有較高的介質(zhì)壓力,避免介質(zhì)在密封腔內(nèi)汽化或氣體積聚,而且還可把摩擦副產(chǎn)生的摩擦熱及時帶走,有效控制密封端面溫升,增大液相面積,改善摩擦狀態(tài)。機械密封的工作溫度不能超過其規(guī)定值。南通容積泵密封經(jīng)銷廠家</p><p style="text-indent:25px">在密封面處由于干摩擦、冷卻水突然中斷，雜質(zhì)進入密封面、抽空等情況下，都會導致環(huán)面出現(xiàn)徑向裂紋。常州化工泵用密封銷售價格</p><p> 油封主要由密封體、加強骨架和自緊螺旋彈簧等幾部分組成。密封體按照不同部位又分為底部、腰部、刃口和密封唇等。。 </p> <p> <span style="font-size:12px;">金屬骨架就如同混凝土構(gòu)件里面的鋼筋，起到加強的作用，并使油封能保持形狀及張力。通常，在自由狀態(tài)下的骨架油封，其內(nèi)徑比軸徑小，即具有一定的“過盈量”。因此，當油封裝入油封座和軸上之后，油封刃口的壓力和自緊螺旋彈簧的收縮力對軸產(chǎn)生一定的徑向緊力，經(jīng)過一段時間運行后，該壓力會迅速減小乃至消失，因而，加上彈簧可以隨時補償油封自緊力。</span> </p> <p> <span style="font-size:12px;">油封外緣使油封在腔體孔內(nèi)固定的同時，起防止流體從油封外周面與腔體內(nèi)表面的接觸面之間泄漏及侵入的作用。另外金屬骨架是當油封固定在腔體內(nèi)時，起保持配合力的作用。</span> </p> <p> <span style="font-size:12px;">密封唇部是柔性彈性體，設計成對機械的震動及密封流體的壓力變動的影響下仍可保持穩(wěn)定的密封作用，并起到保持唇部與軸表面穩(wěn)定接觸狀態(tài)的作用。彈簧可提高密封唇向軸的壓緊力，起維持此壓緊力的作用。唇端部被制作成斜鍥形狀，在端部處按壓軸表面，起密封流體的作用。</span> </p> <p> <span style="font-size:12px;">防塵唇是沒有與彈簧連接的副唇，起防止塵埃侵入的作用。</span> </p> <p> <br /> 常州化工泵用密封銷售價格</p><p style="text-indent:25px">漣水創(chuàng)密機械制造有限公司坐落在江蘇省淮安市漣水縣高溝鎮(zhèn)高揚民營經(jīng)濟產(chǎn)業(yè)園，是一家專業(yè)的漣水創(chuàng)密機械制造有限公司產(chǎn)品包括:輕型密封、中型密封、重型密封，廣泛應用于石油、化工、電力、造紙，食品，機械密封件來料加工（塑料機械密封件除外）、銷售；機械配件、汽車配件銷售；自營和代理各類商品及技術(shù)的進出口業(yè)務，公司。公司目前擁有專業(yè)的技術(shù)員工，為員工提供廣闊的發(fā)展平臺與成長空間，為客戶提供高質(zhì)的產(chǎn)品服務，深受員工與客戶好評。公司業(yè)務范圍主要包括：輕型密封，中型密封，重型密封，小型水泵等。公司奉行顧客至上、質(zhì)量為本的經(jīng)營宗旨，深受客戶好評。公司深耕輕型密封，中型密封，重型密封，小型水泵，正積蓄著更大的能量，向更廣闊的空間、更寬泛的領域拓展。</p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/1677807.html</p></div></div></div></div></div><div id="gacz7n2" class="page-right twoColRt"><div id="ngnza4v" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="ey28el3" class="recomPic 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