教你如何選合適你的通風機
今天,我們來了解一下風機選用的(de)(de)(de)要點風(feng)機(ji)不(bu)同于(yu)其他產(chan)(chan)品(pin),使(shi)用(yong)時(shi)間一(yi)般在幾年,甚至十幾年,而且價錢也高低(di)不(bu)等,因此我(wo)(wo)們(men)在選(xuan)用(yong)風(feng)機(ji)時(shi),一(yi)定要選(xuan)擇適合(he)的(de)(de)(de)而且性(xing)價比高的(de)(de)(de)風(feng)機(ji)。首先根(gen)據所(suo)需(xu)風(feng)機(ji)的(de)(de)(de)風(feng)量(liang)(liang)、風(feng)壓(ya)這兩個基本參數(shu),通過風(feng)機(ji)的(de)(de)(de)性(xing)能表(biao)(各家風(feng)機(ji)產(chan)(chan)品(pin)說明(ming)書都有相關數(shu)據)確定風(feng)機(ji)的(de)(de)(de)型(xing)號(hao)和機(ji)號(hao),以及所(suo)需(xu)功率,這時(shi)可能不(bu)止一(yi)款產(chan)(chan)品(pin)滿足要求;我(wo)(wo)們(men)再(zai)結合(he)風(feng)機(ji)用(yong)途、工(gong)(gong)藝要求、使(shi)用(yong)工(gong)(gong)況(kuang)(使(shi)用(yong)場合(he))等,選(xuan)擇風(feng)機(ji)的(de)(de)(de)種類、機(ji)型(xing)以及結構材質等以符合(he)所(suo)需(xu)的(de)(de)(de)工(gong)(gong)作條(tiao)件,力求使(shi)風(feng)機(ji)的(de)(de)(de)額定流量(liang)(liang)和額定壓(ya)力,盡量(liang)(liang)接近工(gong)(gong)藝要求的(de)(de)(de)流量(liang)(liang)和壓(ya)力,從而使(shi)風(feng)機(ji)運行時(shi)使(shi)用(yong)工(gong)(gong)況(kuang)點接近風(feng)機(ji)特性(xing)的(de)(de)(de)高效區(qu)。
具體原則如下:
①在選擇風(feng)(feng)機前,應了(le)解國內通風(feng)(feng)機的生產(chan)(chan)和產(chan)(chan)品(pin)(pin)質(zhi)量(liang)情況,如生產(chan)(chan)的通風(feng)(feng)機品(pin)(pin)種(zhong)、規格(ge)和各種(zhong)產(chan)(chan)品(pin)(pin)的特殊用途(tu),了(le)解目前國內風(feng)(feng)機行情。
②根據通(tong)(tong)(tong)風(feng)(feng)(feng)機(ji)輸(shu)(shu)送(song)(song)(song)氣(qi)體(ti)的(de)(de)(de)物理、化學(xue)性質的(de)(de)(de)不同,選(xuan)(xuan)擇(ze)不同用(yong)途的(de)(de)(de)通(tong)(tong)(tong)風(feng)(feng)(feng)機(ji)。如(ru)輸(shu)(shu)送(song)(song)(song)有爆(bao)(bao)炸和(he)易(yi)燃氣(qi)體(ti)的(de)(de)(de)應(ying)選(xuan)(xuan)防爆(bao)(bao)通(tong)(tong)(tong)風(feng)(feng)(feng)機(ji),確(que)定風(feng)(feng)(feng)機(ji)所(suo)需防爆(bao)(bao)等(deng)級(ji)要求;排(pai)塵(chen)或輸(shu)(shu)送(song)(song)(song)煤粉的(de)(de)(de)應(ying)選(xuan)(xuan)擇(ze)排(pai)塵(chen)或煤粉通(tong)(tong)(tong)風(feng)(feng)(feng)機(ji);輸(shu)(shu)送(song)(song)(song)有腐蝕性氣(qi)體(ti)的(de)(de)(de)應(ying)選(xuan)(xuan)擇(ze)防腐通(tong)(tong)(tong)風(feng)(feng)(feng)機(ji),確(que)定防腐材質用(yong)玻(bo)璃鋼(gang)還是PP等(deng);在高(gao)溫(wen)場合下(xia)工作(zuo)或輸(shu)(shu)送(song)(song)(song)高(gao)溫(wen)氣(qi)體(ti)的(de)(de)(de)應(ying)選(xuan)(xuan)擇(ze)高(gao)溫(wen)通(tong)(tong)(tong)風(feng)(feng)(feng)機(ji),并(bing)且了解(jie)環境溫(wen)度(du)(du)以(yi)及(ji)輸(shu)(shu)送(song)(song)(song)氣(qi)體(ti)溫(wen)度(du)(du)等(deng)。
③在(zai)通(tong)風機選(xuan)(xuan)擇(ze)性能圖(tu)表(biao)上查得(de)有二種(zhong)以上的(de)通(tong)風機可(ke)供選(xuan)(xuan)擇(ze)時(shi),應優先(xian)選(xuan)(xuan)擇(ze)效(xiao)率較高(gao)、機號較小、調節范圍(wei)較大的(de)一(yi)種(zhong),當然(ran)還可(ke)以性價比(bi)(bi)方面來比(bi)(bi)較,權衡利弊而決定。
④如果選定的風(feng)機(ji)葉輪直徑較(jiao)原(yuan)有風(feng)機(ji)的葉輪直徑偏大(da)很多時,為(wei)了利(li)用(yong)原(yuan)有電動機(ji)軸、軸承及支座等(deng),必須對電動機(ji)啟動時間、風(feng)機(ji)原(yuan)有部件的強度及軸的臨界轉速等(deng)進行核(he)算。
⑤選擇離心(xin)式通風(feng)(feng)機時,當(dang)其配用的電機功率(lv)小于或(huo)等于75KW時,可不(bu)裝設僅為(wei)啟(qi)動(dong)用的閥(fa)門。當(dang)排送高(gao)溫煙氣或(huo)空氣而選擇離心(xin)鍋爐(lu)引風(feng)(feng)機時,應設啟(qi)動(dong)用的閥(fa)門,以防冷態運轉(zhuan)時造成過載。
⑥對(dui)有(you)噪音(yin)要(yao)求的(de)通風(feng)(feng)系(xi)(xi)統,應(ying)首先選擇效(xiao)率高(gao)、葉輪圓周速度低的(de)通風(feng)(feng)機,且(qie)使其在最高(gao)效(xiao)率點(dian)工作;還應(ying)根(gen)據通風(feng)(feng)系(xi)(xi)統產生的(de)噪聲和振動的(de)傳播方式,采取相應(ying)的(de)消(xiao)聲和減振措施。通風(feng)(feng)機和電動機的(de)減振措施,一般可采用減振基礎(chu),根(gen)據風(feng)(feng)機安裝方式不(bu)同(tong)選用不(bu)同(tong)的(de)減震設(she)備(bei)等。
⑦在選擇通(tong)風機(ji)時,應(ying)盡量避(bi)免采用(yong)通(tong)風機(ji)并聯(lian)或串(chuan)(chuan)聯(lian)工(gong)作。當(dang)不可避(bi)免時,應(ying)選擇同(tong)型(xing)號(hao)、同(tong)性能的通(tong)風機(ji)聯(lian)合工(gong)作。當(dang)采用(yong)串(chuan)(chuan)聯(lian)時,第(di)一(yi)級通(tong)風機(ji)到(dao)第(di)二級通(tong)風機(ji)之間(jian)應(ying)有一(yi)定的管路聯(lian)結。
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凱億(yi)網宣辦(ban):宋 2023.7.27 報價電話:18105449885
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