足球比赛门票

佛山市南海九洲普惠风机有限公司

新闻资讯

联系方式

佛山南海九洲普惠风机有限公司

业务电话一:0757-86635560

业务电话二:0757-86635561

业务电话三:0757-86635562

地址:佛山市南海狮山新城工业区

当前位置: 网站足球比赛门票 > 新闻资讯 > 技术知识
技术知识

风机选型八法则

1、通风机管网阻力计算不准确

  SHIJITONGFENGCHUCHENGUANDAOYALISUNSHI,YOUYUMOUXIEYUANYINDOUHUIYUJISUANJIEGUOYOUSUOBUTONG,ZHEISHIBUKEBIMIANDE,YINERSHEJIGUIFANZHONGDEJISUANZUIDAYUNXUWUCHAWEI10%~15% 。RENHEHUSHIZHEIZHONGBIYAODECHENGXUJISUAN,DOUJIANGDUITONGFENGJIYUNXINGXIAONENGDEFAHUICHANSHENGZHONGDAYINGXIANG,BIXUJIYUGAODUZHONGSHI。

  (1) 通风机管网阻力计算额定值不准确的原因:管网阻力计算的粗疏和采用阻力系数不够准确;不合理的配置系统有效半径;确定风机进气条件不真实;选型随意缺乏应有的准则;施工监理忽视施工过程中现场设计变更的影响等。都会使计算结果与实际损耗误差超过 30% 甚至更多,导致选型的额定性能与实际运行性能不匹配,结果实际运行性能发生改变。如果计算阻力比实际需要过大时,离心通风机运行引起流量增大,就会使实耗功率显著增加,其结果是全压内效率降低,还使电机额定功率易超载,存在烧电机动的危险,但对笔直倾斜的全压曲线流量变化影响较小;反之必然引起运行流量减少,实耗功率随之降低,风机内效率下降。与此同时,由于流量减少,引起除尘系统风管内流速降低,促使粉尘沉降。这两种情况都会造成风机长期处于轻载低效不节能运行状态。

  (2) TONGFENGJIXUANXINGQUANYAEDINGZHIBUZHUNQUEDEHOUGUO:CHULIGAOWENLUYAOSUOPAICHUDEFEIQI,RUXUANXINGYINFENGJIDEFUYAGUODASHI,HUIPOHUAILUNEIZHENGCHANGREPINGHENG,YOUYUJIADALEYINFENGLIANG,SHILUNEIWENDUXIAJIANGERYINGXIANGRANSHAOHUOJIARE,DAOZHIREYUANSUNSHIDENENGLIANGZENGJIA;DANGYINFENGJIPAISONGHANCHENFEIQI,WURANYUANCHUBAOCHIZUGOUMIBIXINGCHENGDEFUYAZHUANGTAI,NENGGOUYOUXIAODIFANGZHIYOUHAIWURANWUKUOSAN。RUFENGJIDEFUYAGUODASHI,BUJINSHIGEDIANWURANYUANCHUXIZOUGUODUODEWULIAOYINQIZENGJIAHAOSUN,HAIZENGJIACHUCHENGUANDAOMOSUNHEZENGDACHULILIANG,SHIFUYACHUCHENQIDELIAODOUNEIPENGLIAO,YINQIXIELIAOKUNNAN。WEICIZAIYUNXINGZHONGBEIPOTINGJIJIANDUANDINGSHIPAILIAO;CIWAI,CHUCHENQIHUIDOUXIABUFALANPANCHURUOXIRUYUSHUIHESHIQIHAIHUISHIHUIDOULIAOBANJIE,ZAOCHENGPAILIAODUSAI。

2、负荷波动的风机型式选择

  YOUYUSHENGCHANGUOCHENGZHONGGONGKUANGNENGYUANHEYUANLIAOXIAOHAODEZHOUQIXINGBIANHUA,SHILUNEIWENDUBODONGJIAODA。YINCIYINQICHULUCHANSHENGDEYANQILIANGBIANHUADA± 20%~30% ,YINFENGJIZHISUOYIBUYIXUANYONGQIANXIANGFENGJI,SHIYINWEIQIANXIANGFENGJIDEGONGLVQUXIANDOUQIAO。DANGGUANWANGYALISUNSHIBODONGZENGDASHI,YUNXINGZHONGDEDIANJIYICHAOZAI,YOUBEISHAOHUIDEWEIXIAN,GUYINGXUANYONGHOUXIANGFENGJI。

3、装机电容量的配备

  FENGJIXUANZEPEIYONGDIANDONGJIGONGLVYULIANGBUYIGUODAHUOGUOXIAO,GUODAHUIZAOCHENGDIANDONGJIJINGCHANGCHUYUQINGZAIYUNXING,SHIDIANDONGJIDEGONGLVYINSHUJIANGDI,CONGERLANGFEIDIANHAO;FANZHIHUISHIDIANDONGJIJINGCHANGCHUYUCHAOZAIYUNXING,DAOZHIDIANDONGJISHENGWENGUOGAO,JUEYUANYILAOHUA,SHIYONGSHOUMINGSUODUAN,YUCITONGSHIHAIKENENGZAOCHENGNANYIQIDONG。

4、风机连接管不规范

足球比赛门票  YOUYUGONGCHENGSHEJIPEIZHIXIANZHI,BEIPOZAIFENGJIJINKOUZHUANGYOUZHIJIAOWANGUAN、DANYECHABANHUODIEFADIAOJIEYIJICHUKOUCHUZHUANGYOUNIXIANGQILIUWANGUAN,JIEGUODOUHUIZAOCHENGFENGJINEIXIAOLVXIANZHUJIANGDI。

5、不同型式通风机的正确启动

  离心通风机要求系统全关闭空载启动;轴流通风机要求系统全开启有载启动;高温风机在常温条件下启动时,由于空气受热体积膨胀,密度变小,风机产生压力低,所需功率比常温风机小很多,因此常温条件下启动应将系统全关闭空载启动。

6、合理设计通风机的联合工作

足球比赛门票  TONGFENGJIBINGLIANYUCHUANLIANGONGZUOSHI,YOUYUFENGJIXINGNENGYAOYOUSUOJIANGDI,YUNXINGGONGKUANGFUZA,YINCIYIBANJINLIANGBUCAIYONG。BINGLIANYOUXIANSHIYONGSHUANGXIRUFENGJI,YINLIANGTAIBINGLIANXITONGDEYASUNGUODASHI,QIBUDAOZENGJIALIULIANGDEZUOYONG。BINGLIANDUOTAIFENGJIGONGYONGYITAIDAXINGZUHEDAILVSHISHI,DUIYINGDAILVSHIYEYINGFENGBI,FENGECHENGBINGLIANXITONGJINXINGGUOLV。

  XITONGFENGLIANGXIAO,YALIGAOSHI,CAIYONGCHUANLIANFENGJIGONGZUO。CHANGJIANCHUANLIANLIANGTAIXIANGTONGXINGHAOLIXINTONGFENGJIDECHUCHENQIXITONG,YITAIZAICHENDEFENGJIJINKOUGUANWANGFUYASHUSONG,JINGCHUCHENQIJINGHUAHOUZAICHUANLIANLINGYITAIBUZAICHENDEFENGJIJINKOUGUANWANGFUYASHUSONGPAIZHIDAQI。ZHEILIANGTAICHUANLIANFENGJIDESHIJIXIAOLVHESHIHAOGONGLVJUNBUXIANGDENG,BURUCAIYONGLIANGTAIBUZAICHENDEFENGJICHUANLIANGONGZUOXINGNENGHAO。

7、风机进气温度确定虚高导致性能降低

足球比赛门票  GAOWENLUYAOFEIQICHULIDECHUCHENFENGJIXUANXINGSHI,YINXUANXINGQUEDINGJINKOUQIWENBUQUEQIE,ERCAIYONGSHUNSHIZUIGAOQIWENHUODALIANGLOUFENG,YINQIJIJUWENJIANGHUOMANGMUTIGAOQIWEN,ZAOCHENGSHIJIYUNXINGZHONGQIWENDIYUXUANXINGQIWENJIAODUO,JIEGUOZAOCHENGYUNXINGFENGJINEIXIAOLVJIANGDIHEGONGLVZENGDA,DAOZHISHEJIEDINGLIULIANGJIANSHAO。

8、滤袋单室过滤风量的划分不宜过大

  CHUCHENXITONGDEDUOSHIZUHEJIEGOUDEDAILVSHI(YOUCHENGDAIFANG),CHANGYONGZHUSHIZHONGDUANLVCHENCAOZUOJINXINGQINGHUIZUOYE,YIBANDANSHIGUOLVFENGLIANG(YESHIFUJIQINGHUIFENGJIDEFENGLIANG)BUYICHAOGUOMEITAIZHUFENGJIFENGLIANGDE20%,ZHEIYANGJIUBUHUIDAOZHIYUNXINGZHONGZHUFENGJINEIXIAOLVXIAJIANG。YOUYUGUOLVDEGUOCHENGZHONGSHIZHONGYOUYIGEDANSHILVDAIZULUNLIUZAITINGFENG(TINGZHIGUOLV)JINXINGQINGHUI。YINCITINGFENGDANSHIDEDUOYUFENGLIANGYINQIQITASHIZENGJIA,DAOZHIXITONGZULIZENGJIA,JIEGUOZAOCHENGZHUFENGJIFENGLIANGJIANSHAO,QUANYANEIXIAOLVXIAJIANG。



标签:   风机 风机选型 通风机 轴流通风机
分享到:
点击次数:  更新时间:2018-01-16 10:15:57  【打印此页】  【关闭