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class="proBig"><div id="odfzbf7" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/jjsrxby/637261023311718750/3083681.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="b3ic8cf" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/jjsrxby/637261023311718750/3083681.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="d7ce2bh" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)格要求：</span>面議</p><p><span>所在地：</span>江蘇省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>南通耐酸離心泵功率</p><p><span>***更新：</span>2020-05-29 14:25:46</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="i3ik4by" 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(jī): </span>0523-84326878</p><p><span>地址: </span>新橋鎮(zhèn)水三村巴五圩14號(hào)</p><p>[當(dāng)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="7twazwd" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="baxhw32" class="box"><p><p> 改變泵的轉(zhuǎn)速 </p> <p> 改變泵的轉(zhuǎn)速實(shí)質(zhì)上是改變泵的特性曲線，南通耐酸離心泵功率。泵原來(lái)轉(zhuǎn)速為n，工作點(diǎn)為M，如下圖所示，南通耐酸離心泵功率，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(diǎn)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(diǎn)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(jià)格昂貴的變速原動(dòng)機(jī)，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(diǎn)。所以應(yīng)用十分廣。缺點(diǎn)是閥門關(guān)小時(shí)，阻力損失加大，南通耐酸離心泵功率，能量消耗增多，很不經(jīng)濟(jì)。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南通耐酸離心泵功率" src="https://tyunfile.71360.com/UploadFile/jjsrxby/637261023311718750/3083681.png"></div><p> 二、安裝高度Hg計(jì)算允許吸上真空高度Hs是指泵入口處壓力p1可允許達(dá)到的zui大真空度，而實(shí)際的允許吸上真空高度Hs值并不是根據(jù)式計(jì)算的值，而是由泵制造廠家實(shí)驗(yàn)測(cè)定的值，此值附于泵樣本中供用戶查用。位應(yīng)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(shí)的值，當(dāng)操作條件及工作介質(zhì)不同時(shí)，需進(jìn)行換算。1、輸送清水，但操作條件與實(shí)驗(yàn)條件不同，可依下式換算Hs1=Hs+Ha－－Hυ－2輸送其它液體當(dāng)被輸送液體及反派人物條件均與實(shí)驗(yàn)條件不同時(shí)，需進(jìn)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(duì)于油泵型號(hào)，計(jì)算安裝高度時(shí)用汽蝕余量Δh來(lái)計(jì)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(cè)定。若輸送其它液體，亦需進(jìn)行校正，詳查有關(guān)書(shū)籍。吸程=標(biāo)準(zhǔn)大氣壓（）-汽蝕余量-安全量（）標(biāo)準(zhǔn)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(shí)際安裝高度值應(yīng)小于計(jì)算值。當(dāng)計(jì)算之Hg為負(fù)值時(shí)，說(shuō)明泵的吸入口位置應(yīng)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=。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南通耐酸離心泵功率" src="https://tyunfile.71360.com/WaterMark/UploadFile/jjsrxby/637261969387871094/4291998.png"></div><p> 離心泵的常見(jiàn)故障機(jī)解決辦法：故障四：離心泵流量不足（1）系統(tǒng)靜揚(yáng)程增加。處理方法是檢查液體高度和系統(tǒng)壓力。（2）阻力損失增加。處理方法是檢查管路及止逆閥等障礙。（3）殼體和葉輪耐磨環(huán)磨損過(guò)大。處理方法是更換或修理耐磨環(huán)及葉輪。（4）其他部位漏液。處理方法是檢查軸封等部位。（5）泵葉輪堵塞、磨損、腐蝕。處理方法是清洗、檢查、調(diào)換。故障五：離心泵揚(yáng)程不夠（1）葉輪裝反（雙吸輪）。處理方法是檢查葉輪。（2）液體密度、粘度與設(shè)計(jì)條件不符。處理方法是檢查液體的性質(zhì)。（3）操作時(shí)流量太大。處理方法是減少流量。故障六：運(yùn)行過(guò)程**耗過(guò)大（1）葉輪與耐磨環(huán)、葉輪與殼有磨檫。處理方法是檢查并修理。（2）液體密度增加。處理方法是檢查液體密度。（3）填料壓得太緊或干磨擦。處理方法是放松填料，檢查水封管。（4）軸承損壞。處理方法是檢查修理或更換軸承。故障七：發(fā)生氣縛現(xiàn)象氣縛主要是由于離心泵在啟動(dòng)前未充滿液體，泵殼內(nèi)存在空氣，空氣密度小，所產(chǎn)生的離心力也很小，此時(shí)在吸入口所形成的真空度不足以將液體吸入泵內(nèi)，泵氣動(dòng)后不能輸送液體的現(xiàn)象。原因分析：①啟動(dòng)前，未進(jìn)行灌泵排氣，致使空氣竄入泵殼。②殼體的密封不嚴(yán)，使空氣竄入。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南通耐酸離心泵功率" src="https://tyunfile.71360.com/UploadFile/jjsrxby/637261023229531250/3173104.png"></div></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/79742.html</p></div></div></div></div></div><div id="fy3ifwd" class="page-right twoColRt"><div id="3uwt8vc" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="glahlwy" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)</p></a></div><div id="akceldk" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/846569.html"><div><img src="https://tyunfile.71360.com/WaterMark/UploadFile/nbzxsw/637298235378037109/764794.png" alt="寧波寧海直接考A2有幾個(gè)科目真誠(chéng)推薦寧波助學(xué)商務(wù)信息咨詢供應(yīng)" class="vcenter" 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