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style="text-indent:25px">關(guān)于軸流式屋頂風(fēng)機(jī)的安裝與維護(hù)：1，蘇州低噪音風(fēng)機(jī)廠家、當(dāng)風(fēng)門為電動(dòng)風(fēng)門，風(fēng)機(jī)開(kāi)啟時(shí)先開(kāi)風(fēng)門;關(guān)閉時(shí)，先關(guān)閉風(fēng)機(jī)再關(guān)閉風(fēng)門。2、開(kāi)始運(yùn)轉(zhuǎn)72小時(shí)及每隔半年應(yīng)檢查風(fēng)機(jī)連接件、緊固件有否松動(dòng)，調(diào)整傳動(dòng)皮帶松緊，添加潤(rùn)滑油(脂)。3、如遇冬季下雪，冰凍日期，必須經(jīng)常開(kāi)動(dòng)，以防大雪堵塞風(fēng)機(jī)出口。4、風(fēng)機(jī)底座與基礎(chǔ)之間加墊一層5mm橡膠板，以減少振動(dòng)，地腳螺栓應(yīng)配有彈簧墊圈，防止使用時(shí)松動(dòng)。5、調(diào)試運(yùn)轉(zhuǎn)前應(yīng)詳細(xì)檢查風(fēng)機(jī)各部件，轉(zhuǎn)動(dòng)葉輪應(yīng)無(wú)呆滯和卡、擦現(xiàn)象。6、安裝基礎(chǔ)須高出屋面，表面要求平整，蘇州低噪音風(fēng)機(jī)廠家，以防滲水漏水，并須預(yù)埋好地腳螺栓。7、試運(yùn)轉(zhuǎn)初，先點(diǎn)動(dòng)電機(jī)檢查葉輪旋轉(zhuǎn)方向是否正確(向下看葉輪應(yīng)逆時(shí)針旋)。8、試運(yùn)轉(zhuǎn)時(shí)或正常使用中應(yīng)無(wú)異常，電壓、電流、振動(dòng)、噪聲均應(yīng)在正常范圍內(nèi)。9、在運(yùn)轉(zhuǎn)中，蘇州低噪音風(fēng)機(jī)廠家，碰到下列情況應(yīng)立即停機(jī)，查明原因，待故障排隊(duì)后方可啟動(dòng)。① 發(fā)生強(qiáng)烈振動(dòng)；② 噪聲突然加大或發(fā)出異常響聲；③ 電機(jī)冒白煙；④ 電機(jī)、軸承座溫升過(guò)高。軸流式通風(fēng)機(jī)在試車時(shí)應(yīng)認(rèn)真檢查供給風(fēng)機(jī)電源的工作電壓是否合適要求。蘇州低噪音風(fēng)機(jī)廠家</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="蘇州低噪音風(fēng)機(jī)廠家,風(fēng)機(jī)" src="https://tyunfile.71360.com/UploadFile/chiyukeji/637346661825419922/5239295.png"></div><p style="text-indent:25px">軸流風(fēng)機(jī)和離心風(fēng)機(jī)在機(jī)械通風(fēng)中的作用：區(qū)別：1、離心風(fēng)機(jī)改變了風(fēng)管內(nèi)介質(zhì)的流向，而軸流風(fēng)機(jī)不改變風(fēng)管內(nèi)介質(zhì)的流向；2、前者安裝較復(fù)雜。3、前者電機(jī)與風(fēng)機(jī)一般是通過(guò)皮帶帶動(dòng)轉(zhuǎn)動(dòng)輪連接的，后者電機(jī)一般在風(fēng)機(jī)內(nèi)；4、前者常安裝在空調(diào)機(jī)組進(jìn)、出口處，鍋爐鼓、引風(fēng)機(jī)，等等。后者常安裝在風(fēng)管當(dāng)中、或風(fēng)管出口前端。5、前者是空氣收入后加壓，后者是正壓驅(qū)動(dòng)。離心風(fēng)機(jī)跟軸流風(fēng)機(jī)在啟動(dòng)時(shí)的差別：離心風(fēng)機(jī)的運(yùn)轉(zhuǎn)功率隨著風(fēng)量的增加而增加，所以離心風(fēng)機(jī)在啟動(dòng)時(shí)風(fēng)門要全關(guān)，然后再逐漸打開(kāi)，避免風(fēng)機(jī)電流過(guò)大而燒毀電機(jī)。軸流風(fēng)機(jī)的運(yùn)轉(zhuǎn)功率隨著風(fēng)量的增加而減少，所以軸流風(fēng)機(jī)在啟動(dòng)時(shí)，風(fēng)門要全開(kāi)，然后再逐步關(guān)閉到所需的風(fēng)量值。北京進(jìn)口風(fēng)機(jī)批發(fā)廠家一般說(shuō)來(lái)，我們?cè)跍?zhǔn)備風(fēng)機(jī)選型前需要確定兩個(gè)關(guān)鍵參數(shù)，即：風(fēng)量、風(fēng)壓。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="蘇州低噪音風(fēng)機(jī)廠家,風(fēng)機(jī)" src="https://tyunfile.71360.com/UploadFile/chiyukeji/637346662423242188/5961125.png"></div><p style="text-indent:25px">離心風(fēng)機(jī)選型原則：1.選用效率較高，風(fēng)機(jī)規(guī)格較小，調(diào)節(jié)范圍較大的風(fēng)機(jī)，來(lái)滿足系統(tǒng)可接受的性能，效率和質(zhì)量要求。2.風(fēng)機(jī)運(yùn)行工作點(diǎn)，應(yīng)選擇在風(fēng)機(jī)高效點(diǎn)附近，以確保運(yùn)行穩(wěn)定，避免風(fēng)機(jī)在喘振區(qū)工作。3.要降低噪聲，必須降低風(fēng)機(jī)轉(zhuǎn)速，選擇較大的風(fēng)機(jī)。4.過(guò)大風(fēng)機(jī)選擇，往往使風(fēng)機(jī)運(yùn)行在小風(fēng)量區(qū)，風(fēng)機(jī)進(jìn)出口壓差大，會(huì)引起運(yùn)行不穩(wěn)定和噪聲脈動(dòng)，發(fā)出較高噪聲。5.過(guò)小風(fēng)機(jī)選擇，會(huì)引起風(fēng)機(jī)轉(zhuǎn)速提高，空氣在離開(kāi)葉片時(shí)有較高速度，也會(huì)產(chǎn)生較高噪聲。6.通常風(fēng)機(jī)出風(fēng)口平均風(fēng)速在10-15m/s，較好不要超過(guò)17m/s。7.風(fēng)機(jī)轉(zhuǎn)速≤450rpm，選8極電機(jī)；451～799rpm，選6極電機(jī)；800～1500rpm，選4極電機(jī)；1500rpm以上的，選2極電機(jī)。</p><p style="text-indent:25px">軸流通風(fēng)機(jī)使用前該注意的因素：1、軸流式通風(fēng)機(jī)到達(dá)正常轉(zhuǎn)速時(shí)，應(yīng)檢測(cè)風(fēng)機(jī)輸進(jìn)電流是否正常，風(fēng)機(jī)的運(yùn)行電流不能跨越其額定電流。若運(yùn)行電流跨越其額定電流，應(yīng)檢查供給風(fēng)機(jī)的電壓是否正常。2、軸流式通風(fēng)機(jī)所需機(jī)電功率是指在一定工況下，對(duì)離心風(fēng)機(jī)和風(fēng)機(jī)箱，進(jìn)風(fēng)口全開(kāi)時(shí)所需功率較年夜。若進(jìn)風(fēng)口全開(kāi)進(jìn)行運(yùn)轉(zhuǎn)，則機(jī)電有損壞的可能。風(fēng)機(jī)試車時(shí)較好將風(fēng)機(jī)進(jìn)口或出口管路上的閥門關(guān)閉，運(yùn)轉(zhuǎn)后將閥門漸漸開(kāi)啟，到達(dá)所需工況為止，并注重風(fēng)機(jī)的運(yùn)轉(zhuǎn)電流是否跨越額定電流。在軸流風(fēng)機(jī)使用前一定要對(duì)風(fēng)機(jī)進(jìn)行試機(jī)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="蘇州低噪音風(fēng)機(jī)廠家,風(fēng)機(jī)" src="https://tyunfile.71360.com/UploadFile/chiyukeji/637346661846845703/9994405.png"></div><p style="text-indent:25px">軸流式風(fēng)機(jī)如何降低噪聲？具體降噪方法如下：(1)增強(qiáng)葉柵的氣動(dòng)力栽荷，降低圓周速度。對(duì)于風(fēng)機(jī)采用強(qiáng)前向葉片，且多葉片葉輪有利于增大葉柵的氣動(dòng)力載荷，在得到同樣風(fēng)量風(fēng)壓情況下，葉輪葉片外圓上圓周速度可使風(fēng)機(jī)噪聲明顯降低。 (2)合理的蝸舌間隙和蝸舌半徑。當(dāng)氣流與葉片做相對(duì)運(yùn)動(dòng)時(shí)，葉片后緣的氣流尾跡中速度及壓力均小于主流區(qū)，使葉柵后的氣流速度與壓力分布皆不均勻，這種不均勻的氣流在旋轉(zhuǎn)，由于在動(dòng)葉的氣流出口有蝸舌存在，則這種非穩(wěn)定流動(dòng)與蝸舌相互作用將產(chǎn)生噪聲，距離噪聲愈近噪聲愈烈，通常適當(dāng)取較大的風(fēng)舌前端半徑可以降低離心風(fēng)機(jī)的旋轉(zhuǎn)噪聲與渦流噪聲。盡量使燃油或煤燃燒充分，減少炭黑，適當(dāng)?shù)靥岣吲艧煖囟群瓦M(jìn)風(fēng)溫度，以避免煙氣中德硫在空預(yù)器中德結(jié)露。北京進(jìn)口風(fēng)機(jī)批發(fā)廠家</p><p style="text-indent:25px">高溫軸流風(fēng)機(jī)一般只采用碳鋼材質(zhì)，極少數(shù)同時(shí)要求防腐的風(fēng)機(jī)采用不銹鋼材質(zhì)。蘇州低噪音風(fēng)機(jī)廠家</p><p style="text-indent:25px">高溫風(fēng)機(jī)與離心風(fēng)機(jī)有什么區(qū)別？離心風(fēng)機(jī)在風(fēng)機(jī)行業(yè)中較為常見(jiàn)的使用類型，但是人們?cè)谶x擇的時(shí)候經(jīng)常把它和高溫風(fēng)機(jī)混淆，其實(shí)兩個(gè)之間的差別還是很大的，下面就給大家介紹一下它倆的區(qū)別：1、高溫風(fēng)機(jī)專門用于高溫作業(yè)場(chǎng)所，其材質(zhì)具有較強(qiáng)的耐高溫、耐高壓性。①高溫風(fēng)機(jī)輸送的氣體為空氣或其它不自燃、無(wú)纏繞性、對(duì)人體無(wú)害、對(duì)鋼鐵材料無(wú)腐蝕之氣體。②高溫風(fēng)機(jī)普遍應(yīng)用于化工工業(yè)、石油、冶金、鍛壓、電力、核電站、環(huán)保等領(lǐng)域。③輸送介質(zhì)的溫度不得超過(guò)其額定溫度范圍。④可作為各行業(yè)輸送無(wú)腐蝕性、不自燃、不含粘性物質(zhì)的熱氣、蒸氣、煙氣。2、離心風(fēng)機(jī)可制成右旋和左旋兩種型式，從電動(dòng)機(jī)一側(cè)正視葉輪順時(shí)針旋轉(zhuǎn)，稱為右旋轉(zhuǎn)風(fēng)機(jī)，葉輪逆時(shí)針旋轉(zhuǎn)，稱為左旋轉(zhuǎn)風(fēng)機(jī)。①壓力增加高主要發(fā)生在葉輪中，其次發(fā)生在擴(kuò)壓過(guò)程。②在單級(jí)離心風(fēng)機(jī)中，氣體從軸向進(jìn)入葉輪，氣體流經(jīng)葉輪時(shí)改變成徑向，然后進(jìn)入擴(kuò)壓器。③在擴(kuò)壓器中，氣體改變了流動(dòng)方向造成減速，這種減速作用將動(dòng)能轉(zhuǎn)換成壓力能。蘇州低噪音風(fēng)機(jī)廠家</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/3128013.html</p></div></div></div></div></div><div id="8lripg4" class="page-right twoColRt"><div 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