如遇以下环境，草莓视频app黄:轴流风机应立即停机检测：1、轴流风机产生强烈的振动或摩擦声；2、马达电流突然上升，超过马达额定电流；3、电动机轴承温度急剧上升。轴流风机的运行和启动取决于电机的驱动。事实上，任何设备都(dou)是一样的(de)。如果你想(xiang)运行，你必须有类似的(de)“发动机”。

如何处理轴流风机运行中的突发情况？如何选择轴流风机电机？

选(xuan)用轴(zhou)(zhou)流(liu)风(feng)机的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)机时(shi)，总希望(wang)电(dian)(dian)(dian)机能(neng)够带(dai)动(dong)(dong)叶(ye)(ye)(ye)(ye)(ye)轮快(kuai)速达到额定(ding)转(zhuan)速，正(zheng)常工作(zuo)(zuo)(zuo)。电(dian)(dian)(dian)机起(qi)(qi)动(dong)(dong)包括通电(dian)(dian)(dian)起(qi)(qi)动(dong)(dong)和(he)加速的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)全(quan)过程。它的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)起(qi)(qi)动(dong)(dong)方式分(fen)(fen)为(wei)全(quan)压(ya)(ya)起(qi)(qi)动(dong)(dong)和(he)减(jian)压(ya)(ya)起(qi)(qi)动(dong)(dong)。为(wei)了获(huo)得(de)规定(ding)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)启动(dong)(dong)时(shi)间，合理选(xuan)择电(dian)(dian)(dian)机的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)启动(dong)(dong)方式，必须根(gen)据(ju)供电(dian)(dian)(dian)电(dian)(dian)(dian)网的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)容(rong)量(liang)、机械负(fu)载对启动(dong)(dong)扭矩的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)要求、电(dian)(dian)(dian)机本身的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)特点等因(yin)素进(jin)行具体(ti)分(fen)(fen)析。比如电(dian)(dian)(dian)网容(rong)量(liang)大(da)(da)，电(dian)(dian)(dian)机的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)启动(dong)(dong)电(dian)(dian)(dian)流(liu)不(bu)会在电(dian)(dian)(dian)网上(shang)造成(cheng)显(xian)著的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)电(dian)(dian)(dian)压(ya)(ya)降落。此(ci)外(wai)，电(dian)(dian)(dian)网的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)控制线和(he)设备可(ke)(ke)(ke)以(yi)通过足够大(da)(da)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)启动(dong)(dong)电(dian)(dian)(dian)流(liu)在短时(shi)间内启动(dong)(dong)全(quan)压(ya)(ya)启动(dong)(dong)。如果(guo)风(feng)扇启动(dong)(dong)时(shi)要求的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)扭矩不(bu)大(da)(da)，电(dian)(dian)(dian)网容(rong)量(liang)与电(dian)(dian)(dian)机相(xiang)比不(bu)大(da)(da)，主(zhu)要考虑如何减(jian)少(shao)启动(dong)(dong)电(dian)(dian)(dian)流(liu)，采用减(jian)压(ya)(ya)启动(dong)(dong)。轴(zhou)(zhou)流(liu)风(feng)机噪(zao)(zao)(zao)(zao)(zao)声(sheng)(sheng)(sheng)(sheng)(sheng)分(fen)(fen)析风(feng)机总噪(zao)(zao)(zao)(zao)(zao)声(sheng)(sheng)(sheng)(sheng)(sheng)级(ji)与叶(ye)(ye)(ye)(ye)(ye)片(pian)(pian)(pian)(pian)(pian)(pian)速度的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)六次方成(cheng)正(zheng)比。据(ju)分(fen)(fen)析，风(feng)扇噪(zao)(zao)(zao)(zao)(zao)声(sheng)(sheng)(sheng)(sheng)(sheng)源(yuan)基本上(shang)是(shi)(shi)偶极子性质。进(jin)一步(bu)推出，噪(zao)(zao)(zao)(zao)(zao)声(sheng)(sheng)(sheng)(sheng)(sheng)是(shi)(shi)由于(yu)叶(ye)(ye)(ye)(ye)(ye)片(pian)(pian)(pian)(pian)(pian)(pian)作(zuo)(zuo)(zuo)用于(yu)流(liu)过风(feng)机的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)空气(qi)上(shang)脉(mai)动(dong)(dong)力所(suo)致。可(ke)(ke)(ke)以(yi)认为(wei)风(feng)扇离(li)散(san)频(pin)率(lv)噪(zao)(zao)(zao)(zao)(zao)声(sheng)(sheng)(sheng)(sheng)(sheng)源(yuan)有(you)两个，一个是(shi)(shi)转(zhuan)子叶(ye)(ye)(ye)(ye)(ye)片(pian)(pian)(pian)(pian)(pian)(pian)运动(dong)(dong)压(ya)(ya)力场引(yin)(yin)起(qi)(qi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)螺(luo)旋桨(jiang)噪(zao)(zao)(zao)(zao)(zao)声(sheng)(sheng)(sheng)(sheng)(sheng)，另一个是(shi)(shi)气(qi)动(dong)(dong)干扰引(yin)(yin)起(qi)(qi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)叶(ye)(ye)(ye)(ye)(ye)片(pian)(pian)(pian)(pian)(pian)(pian)脉(mai)动(dong)(dong)噪(zao)(zao)(zao)(zao)(zao)声(sheng)(sheng)(sheng)(sheng)(sheng)。干扰噪(zao)(zao)(zao)(zao)(zao)声(sheng)(sheng)(sheng)(sheng)(sheng)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)一个重要因(yin)素是(shi)(shi)风(feng)扇和(he)静叶(ye)(ye)(ye)(ye)(ye)之(zhi)(zhi)间的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)距(ju)离(li)。当(dang)这个距(ju)离(li)很小(xiao)时(shi)，位流(liu)和(he)尾迹的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)变化(hua)都会受到影(ying)(ying)(ying)响(xiang)，叶(ye)(ye)(ye)(ye)(ye)片(pian)(pian)(pian)(pian)(pian)(pian)也(ye)可(ke)(ke)(ke)能(neng)被用作(zuo)(zuo)(zuo)声(sheng)(sheng)(sheng)(sheng)(sheng)屏障(zhang)，从而(er)加强附(fu)近叶(ye)(ye)(ye)(ye)(ye)片(pian)(pian)(pian)(pian)(pian)(pian)列叶(ye)(ye)(ye)(ye)(ye)片(pian)(pian)(pian)(pian)(pian)(pian)上(shang)升力脉(mai)动(dong)(dong)产(chan)生的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)声(sheng)(sheng)(sheng)(sheng)(sheng)辐射(she)。这一影(ying)(ying)(ying)响(xiang)取决(jue)于(yu)与升力脉(mai)动(dong)(dong)相(xiang)关的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)声(sheng)(sheng)(sheng)(sheng)(sheng)波(bo)(bo)波(bo)(bo)长与作(zuo)(zuo)(zuo)为(wei)屏障(zhang)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)叶(ye)(ye)(ye)(ye)(ye)片(pian)(pian)(pian)(pian)(pian)(pian)大(da)(da)小(xiao)之(zhi)(zhi)比。因(yin)此(ci)，这种影(ying)(ying)(ying)响(xiang)引(yin)(yin)起(qi)(qi)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)辐射(she)强度的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)变化(hua)在比值大(da)(da)于(yu)2的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)频(pin)率(lv)范围(wei)内最(zui)为(wei)明(ming)显(xian)。因(yin)此(ci)，当(dang)一片(pian)(pian)(pian)(pian)(pian)(pian)辐射(she)噪(zao)(zao)(zao)(zao)(zao)声(sheng)(sheng)(sheng)(sheng)(sheng)叶(ye)(ye)(ye)(ye)(ye)片(pian)(pian)(pian)(pian)(pian)(pian)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)上(shang)下游叶(ye)(ye)(ye)(ye)(ye)片(pian)(pian)(pian)(pian)(pian)(pian)数(shu)量(liang)相(xiang)同，两片(pian)(pian)(pian)(pian)(pian)(pian)叶(ye)(ye)(ye)(ye)(ye)片(pian)(pian)(pian)(pian)(pian)(pian)中的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)每一片(pian)(pian)(pian)(pian)(pian)(pian)叶(ye)(ye)(ye)(ye)(ye)片(pian)(pian)(pian)(pian)(pian)(pian)同时(shi)与一片(pian)(pian)(pian)(pian)(pian)(pian)转(zhuan)子叶(ye)(ye)(ye)(ye)(ye)片(pian)(pian)(pian)(pian)(pian)(pian)相(xiang)遇，在源(yuan)头两侧(ce)形(xing)成(cheng)声(sheng)(sheng)(sheng)(sheng)(sheng)障(zhang)时(shi)，这种影(ying)(ying)(ying)响(xiang)会更强。当(dang)动(dong)(dong)静叶(ye)(ye)(ye)(ye)(ye)之(zhi)(zhi)间的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)距(ju)离(li)增加，位流(liu)干扰的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)影(ying)(ying)(ying)响(xiang)比尾迹速度变化(hua)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)影(ying)(ying)(ying)响(xiang)快(kuai)得(de)多时(shi)，叶(ye)(ye)(ye)(ye)(ye)片(pian)(pian)(pian)(pian)(pian)(pian)作(zuo)(zuo)(zuo)为(wei)声(sheng)(sheng)(sheng)(sheng)(sheng)障(zhang)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)作(zuo)(zuo)(zuo)用也(ye)会随着距(ju)离(li)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)增加而(er)减(jian)少(shao)。可(ke)(ke)(ke)以(yi)看出，干扰噪(zao)(zao)(zao)(zao)(zao)声(sheng)(sheng)(sheng)(sheng)(sheng)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)大(da)(da)小(xiao)至少(shao)有(you)三个参(can)数(shu)：速度场波(bo)(bo)形(xing)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)叶(ye)(ye)(ye)(ye)(ye)片(pian)(pian)(pian)(pian)(pian)(pian)形(xing)状(即(ji)叶(ye)(ye)(ye)(ye)(ye)片(pian)(pian)(pian)(pian)(pian)(pian)载荷)、作(zuo)(zuo)(zuo)为(wei)声(sheng)(sheng)(sheng)(sheng)(sheng)源(yuan)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)叶(ye)(ye)(ye)(ye)(ye)片(pian)(pian)(pian)(pian)(pian)(pian)辐射(she)面积，叶(ye)(ye)(ye)(ye)(ye)片(pian)(pian)(pian)(pian)(pian)(pian)列之(zhi)(zhi)间的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)距(ju)离(li)。很小(xiao)的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)距(ju)离(li)可(ke)(ke)(ke)能(neng)会产(chan)生两种声(sheng)(sheng)(sheng)(sheng)(sheng)学影(ying)(ying)(ying)响(xiang)。若在动(dong)(dong)叶(ye)(ye)(ye)(ye)(ye)上(shang)建立静叶(ye)(ye)(ye)(ye)(ye)干涉场的(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)(de)力脉(mai)动(dong)(dong)使动(dong)(dong)叶(ye)(ye)(ye)(ye)(ye)成(cheng)为(wei)声(sheng)(sheng)(sheng)(sheng)(sheng)源(yuan)，而(er)静叶(ye)(ye)(ye)(ye)(ye)则是(shi)(shi)声(sheng)(sheng)(sheng)(sheng)(sheng)障(zhang)。