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04:06:59</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="fjax7z7" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">靖江市瑞鑫泵業(yè)有限公司</a></p><p><span>聯(lián)系人：</span>王宇琳</p><p><span>郵箱: </span>www17768716667@163.com</p><p><span>電話: </span>17768716667</p><p><span>傳真: </span>0523_</p><p><span>網(wǎng)址: </span></p><p><span>手機: </span>0523-84326878</p><p><span>地址: </span>新橋鎮(zhèn)水三村巴五圩14號</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="ym8wx3j" class="page-proshow02"><p class="title">詳細說明</p><div id="cli3c2w" class="box"><p><p> 離心泵機械密封失效的分析 </p> <p> 離心泵停機主要是由機械密封的失效造成的。失效的表現(xiàn)大都是泄漏，泄漏原因有以下幾種： </p> <p> 動靜環(huán)密封面的泄漏，原因主要有：端面平面度，粗糙度未達到要求，或表面有劃傷；端面間有顆粒物質(zhì)，造成兩端面不能同樣運行；安裝不到位，方式不正確。 </p> <p> 補償環(huán)密封圈泄漏，原因主要有：壓蓋變形，預緊力不均勻；安裝不正確；密封圈質(zhì)量不符合標準；密封圈選型不對。 </p> <p> <br /> </p> <p> 液體介質(zhì)潤滑性較差，加之操作壓力過載，兩密封面追蹤轉(zhuǎn)動不同步。例如高轉(zhuǎn)速泵轉(zhuǎn)速為20445r/min，密封面中心直徑為7cm，耐酸離心泵類型，耐酸離心泵類型，泵運轉(zhuǎn)后其線速度高達75 m/s，當有一個密封面滯后不能追蹤旋轉(zhuǎn)，耐酸離心泵類型，瞬時高溫造成密封面損壞。 </p> <p> <br /> 離心泵廠家歡迎您來咨詢——靖江市瑞鑫泵業(yè)有限公司。耐酸離心泵類型</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="耐酸離心泵類型,離心泵" src="https://tyunfile.71360.com/UploadFile/jjsrxby/637261023464335938/9339079.png"></div><p> 安裝原因：基礎(chǔ)螺栓松脫、校調(diào)的水平度沒有調(diào)整好，在離心泵工作之前，要檢查一下其基礎(chǔ)螺栓是否有松動的現(xiàn)象，以及離心泵的安裝是否水平。這些也會造成離心泵在工作的時候發(fā)生振動的情況。 </p> <p> 離心泵內(nèi)有異物。在離心泵工作之前，要檢查下泵內(nèi)部，由于長期使用，在離心泵的內(nèi)部可能存在一些例如水中的雜草等異物。 </p> <p> 由于長時間的使用造成離心泵內(nèi)部的氣蝕穿孔。 </p> <p> 離心泵的設計方面存在不合理的情況，例如零件大小尺寸等問題。不過這種情況相對較少。離心泵在出廠之前，都會在車間內(nèi)部進行多次的檢測工作，以保證出廠離心泵的合格率。徐州耐磨離心泵維修靖江市瑞鑫泵業(yè)有限公司歡迎您來咨詢。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="耐酸離心泵類型,離心泵" src="https://tyunfile.71360.com/WaterMark/UploadFile/jjsrxby/637261653946699218/2958278.png"></div><p> h.機械容差——即使單個部件的容差值在生產(chǎn)商規(guī)范所規(guī)定的范圍內(nèi)，機械容差仍可引起機械內(nèi)的振動。簡言之，泵組裝的零件越多，(在其他條件相同的情況下)容差"累計"使機械產(chǎn)生振動的風險越大。單個部件在檢查時可能在規(guī)范(通常為ASME/)允許的范圍內(nèi)。由于這樣一個事實的存在，即采用可能產(chǎn)生問題的已加工部件查找并確定其他可能問題，上述情況將變得更為復雜。精確度和垂直狀態(tài)的檢查將難于在實地準確測量，但是這是確定問題的途徑。i.在另一方面，如果容差直接涉及轉(zhuǎn)動部件，則機械容差引起的振動將易于診斷。"失圓"或"失方"的加工部件可能導致在其他部件內(nèi)出現(xiàn)束縛或磨削。參考下文"外部原因?qū)е抡駝?中的內(nèi)容，區(qū)別機械容差與管道校準問題。j.機械松動——為了便于討論，本文中的機械松動*指螺母和螺栓沒有恰當進行緊固的情況。單獨的螺帽在裝配時可能沒有緊固或在運輸和安裝過程中出現(xiàn)松動。所有外部螺帽在運輸和安裝時應解開。生產(chǎn)商每次就裝配提出建議時，所有外部螺帽應緊固并在隨后進行定期緊固(對于大多數(shù)機械，建議每年緊固一次)。內(nèi)部原因引起的振動為了便于進行論述，本文中"內(nèi)部原因"指機器內(nèi)部的原因，不論是在泵的外部或內(nèi)部。</p><p> 改變泵的轉(zhuǎn)速 </p> <p> 改變泵的轉(zhuǎn)速實質(zhì)上是改變泵的特性曲線。泵原來轉(zhuǎn)速為n，工作點為M，如下圖所示，若把泵的轉(zhuǎn)速提高到n1，泵的特性曲線 H——Q往上移，工作點由M移至M1，流量由QM加大到QM1。若把泵的轉(zhuǎn)速降至n2，工作點移至M2，流量降至QM2。 </p> <p> 這種調(diào)節(jié)方法需要變速裝置或價格昂貴的變速原動機，且難以做到連續(xù)調(diào)節(jié)流量，故化工生產(chǎn)中很少采用。 </p> <p> 用閥門調(diào)節(jié)流量迅速方便，且流量可以連續(xù)變化，適合化工連續(xù)生產(chǎn)的特點。所以應用十分廣。缺點是閥門關(guān)小時，阻力損失加大，能量消耗增多，很不經(jīng)濟。上海地區(qū)離心泵定制廠家——靖江市瑞鑫泵業(yè)有限公司。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="耐酸離心泵類型,離心泵" src="https://tyunfile.71360.com/WaterMark/UploadFile/jjsrxby/637261969178349610/4186371.png"></div><p> 二、安裝高度Hg計算允許吸上真空高度Hs是指泵入口處壓力p1可允許達到的zui大真空度，而實際的允許吸上真空高度Hs值并不是根據(jù)式計算的值，而是由泵制造廠家實驗測定的值，此值附于泵樣本中供用戶查用。位應注意的是泵樣本中給出的Hs值是用清水為工作介質(zhì)，操作條件為20℃及及壓力為×105Pa時的值，當操作條件及工作介質(zhì)不同時，需進行換算。1、輸送清水，但操作條件與實驗條件不同，可依下式換算Hs1=Hs+Ha－－Hυ－2輸送其它液體當被輸送液體及反派人物條件均與實驗條件不同時，需進行兩步換算：*步依上式將由泵樣本中查出的Hs1；第二步依下式將Hs1換算成H?s2、汽蝕余量Δh對于油泵型號，計算安裝高度時用汽蝕余量Δh來計算，即泵允許吸液體的真空度，亦即泵允許的安裝高度，單位用米。用汽蝕余量Δh由油泵樣本中查取，其值也用20℃清水測定。若輸送其它液體，亦需進行校正，詳查有關(guān)書籍。吸程=標準大氣壓（）-汽蝕余量-安全量（）標準大氣壓能壓管路真空高度。例如：某泵必需汽蝕余量為，求吸程Δh？解：Δh=從安全角度考慮，泵的實際安裝高度值應小于計算值。當計算之Hg為負值時，說明泵的吸入口位置應在貯槽液面之下。例2-3某離心泵從樣本上查得允許吸上真空高度Hs=。江蘇地區(qū)離心泵供應商——靖江市瑞鑫泵業(yè)有限公司。耐酸離心泵類型</p><p style="text-indent:25px">江蘇質(zhì)量離心泵——靖江市瑞鑫泵業(yè)有限公司。耐酸離心泵類型</p><p> 離心泵功率與效率 </p> <p> 泵在運轉(zhuǎn)過程中由于存在種種損失，使泵的實際（有效）壓頭和流量均較理論值為低，而輸入泵的功率較理論值為高，設 </p> <p> H______ 泵的有效壓頭，即單位量液體在重力場中從泵獲得的能量，m； </p> <p> Q ______ 泵的實際流量，m3/s； </p> <p> ρ ______ 液體密度，kg/ m3； </p> <p> Ne______ 泵的有效功率，即單位時間內(nèi)液體從泵處獲得的機械能，W。 </p> <p> 有效功率可寫成 Ne = QHρg </p> <p> 由電機輸入離心泵的功率稱為泵的軸功率，以N表示。有效功率與軸功率之比定義為泵的總效率η，即 </p> <p> η=Ne/N 耐酸離心泵類型</p><p style="text-indent:25px">靖江市瑞鑫泵業(yè)有限公司致力于機械及行業(yè)設備，以科技創(chuàng)新實現(xiàn)***管理的追求。公司自創(chuàng)立以來，投身于cz型化工流程泵，za型石油化工流程泵，ZE型石油化工流程泵，WFB型無密封自控自吸泵，是機械及行業(yè)設備的主力軍。靖江瑞鑫泵業(yè)不斷開拓創(chuàng)新，追求出色，以技術(shù)為先導，以產(chǎn)品為平臺，以應用為重點，以服務為保證，不斷為客戶創(chuàng)造更高價值，提供更優(yōu)服務。靖江瑞鑫泵業(yè)創(chuàng)始人王宇琳，始終關(guān)注客戶，創(chuàng)新科技，竭誠為客戶提供良好的服務。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2465246.html</p></div></div></div></div></div><div id="akh7crd" class="page-right twoColRt"><div id="yc7bsof" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div 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