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电气设计师应该全面正确的了解阻燃电缆和耐火电缆的区别

返回列表来源:湘江电缆发布日期 2016-03-13 09:41浏览:- 加入收藏

近年来,全球范围内的电力系统火灾事故中,由于电力电缆着火而导致电力系统供电中断的比例有上升趋势。因此在发电厂、变电站等有大量电气设备及密集敷设大量电缆的场所采用阻燃电缆阻止火势蔓延,采用耐火电缆保证重要回路的不间断供电显得日益重要。而有些电气设计人员对阻燃电缆及耐火电缆的概念分辨不清,对二者的结构及特性不甚了解,从而导致无法根据供电要求正确设计选用这两种电缆,在现场进行设计代理或监理工作时不能正确指导这两种电缆的敷设施工。因此,全面正确地了解阻燃及耐火电缆是正确选用它们的首要条件。

1、阻燃电缆

阻燃电缆是指:在规定试验条件下,试样被燃烧,在撤去试验火源后,火焰的蔓延仅在限定范围内,残焰或残灼在限定时间内能自行熄灭的电缆。它的根本特性是:在火灾情况下有可能被烧坏而不能运行,但可阻止火势的蔓延。通俗地讲,电缆万一失火,能够把燃烧限制在局部范围内,不产生蔓延,保住其他的各种设备,避免造成更大的损失。

1.1ZURANDIANLANDEJIEGOUTEDIAN

ZURANDIANLANDEJIEGOUHEPUTONGDIANLANJIBENXIANGTONG,BUTONGZHICHUZAIYUTADEJUEYUANCENG、HUTAO、WAIHUCENGYIJIFUZHUCAILIAO(BAODAIJITIANCHONG)QUANBUHUOBUFENCAIYONGZURANCAILIAO。

火狐体育app官网 1.2ZURANDIANLANDEFENLEI

GENJUDIANLANZURANCAILIAODEBUTONG,ZURANDIANLANFENWEIHANLUZURANDIANLANJIWULUDIYANZURANDIANLANLIANGDALEI。

火狐体育app官网 QIZHONGHANLUZURANDIANLANDEJUEYUANCENG、HUTAO、WAIHUCENGYIJIFUZHUCAILIAO(BAODAIJITIANCHONG)QUANBUHUOBUFENCAIYONGHANLUDEJUYIXI(PVC)ZURANCAILIAO,YINERJUYOULIANGHAODEZURANTEXING。DANSHIZAIDIANLANRANSHAOSHIHUISHIFANGDALIANGDENONGYANHELUSUANQITI,LUSUANQITIDUIZHOUWEIDEDIANQISHEBEIYOUFUSHIXINGWEIHAI,JIUYUANRENYUANXUYAODAISHANGFANGDUMIANJUCAINENGJIEJINXIANCHANGJINXINGMIEHUO。DIANLANRANSHAOSHIJIZHOUWEIDIANQISHEBEIYIJIJIUYUANRENYUANZAOCHENGWEIHAI,BULIYUMIEHUOJIUYUANGONGZUO,CONGERDAOZHIYANZHONGDE“ERCIWEIHAI”。ERWULUDIYANZURANDIANLANDEJUEYUANCENG、HUTAO、WAIHUCENGYIJIFUZHUCAILIAO(BAODAIJITIANCHONG)QUANBUHUOBUFENCAIYONGDESHIBUHANLUDEJIAOLIANJUYIXI(XLPE)ZURANCAILIAO,BUJINJUYOUGENGHAODEZURANTEXING,ERQIEZAIDIANLANRANSHAOSHIMEIYOULUSUANQITIFANGCHU,DIANLANDEFAYANLIANGYEXIAO,DIANLANRANSHAOCHANSHENGDEFUSHIXINGQITIYELANZURANXINGHEJIANGDILUSUANQITIFASHENGLIANGZHIJIANCAIQUZHEZHONGDEFANGSHIKAIFACHULEDILUDIYANZURANDIANLAN。TADEHANLULIANGYUEWEIHANLUZURANDIANLANDE1/3ZUOYOU。FAYANLIANGYEJIEJINYUGONGRENDE“DIYAN”SHUIPING。

火狐体育app官网 GENJU《DIANXIANDIANLANRANSHAOSHIYANFANGFA》DEGUIDING,CAIYONGCHENGSHURANSHAOSHIYANFANGFAKAOHEDEZURANDIANLANFENWEIA、B、C3LEI,QIZHONGALEIDIANLANSHIYANTIAOJIANZUIKEKE,XINGNENGJIAOB、CLEIGENGYOU,JIAGEYEZUIGUI。WEISHIXIANDIANLANDEZURANHUOTIGAODIANLANDEZURANJIBIE,RENMENYANZHIKAIFACHUJIBAOSUOWEI“GEYANGCENG”HUO“GEHUOCENG”ZUOWEITIANCHONGHUORAOBAOGEHUOZURANBAODAI(GEHUOCENG)DENGXINXINGJIEGOUDEZURANDIANLAN,BINGBAZHEIZHONGDIANLANJIAOZUO“GEYANG(HUO)CENG”DIANLAN。QIZHUYAOYUANLISHIZAICAILIAOZHONGTIANJIALEJINSHUSHUIHEWUCHENGFEN,YEKEFENBIESHIXIANDILUDIYAN、WULUDIYANHEDIANLANDEZURANHUA。DANSHI,SUOWEI“GEYANGCENG”HE“GEHUOCENG”ZHISHISHIXIANDIANLANZURANDEYIZHONGSHOUDUAN,GUIGENDAODITAHAISHIYIZHONGZURANDIANLAN,QISUONENGDADAODEZUIGAOZURANJIBIEYESHIALEI。YINCI,BUNENGBAZURANDIANLANJIAOZUO“GEYANGCENG”DIANLAN,ERZHINENGSHUO“GEYANGCENG”DIANLANSHIYIZHONGZURANDIANLAN。

火狐体育app官网 1.3XUANYONGSHIZHUYIDEWENTI

设计人员应该根据阻燃电缆的具体特性对阻燃电缆进行设计选用及敷设施工,并应注意以下几个问题:

火狐体育app官网 (1)YOUYUHANLUZURANDIANLAN(BAOKUOZURANDIANLAN、DILUDIYANZURANDIANLAN)ZAIRANSHAOSHIHUISHIFANGJUYOUFUSHIXINGDELUSUANQITI,DADAZUAIXIAOFANGGONGZUOCONGERDANWUJIUHUOSHIJIANBINGJIAJUHUOSHIMANYAN,YINCIZAIRENKOUMIDUJIAOGAODEGONGZHONGCHANGSUOYINGJINLIANGSHEJIXUANYONGWULUDIYANZURANDIANLAN。ZAIRENKOUMIDUJIAOXIAODEZUOYEQUKEYIXUANYONGRENYIYIZHONGZURANDIANLAN。

(2)ZURANDIANLANFENWEIA、B、C3LEI,QIZHONGALEIZURANDIANLANXINGNENGJIAOB、CLEIGENGYOU,JIAGEYEZUIGUI。SHEJIRENYUANTIGONGDINGHUOQINGCESHIYINGBIAOMINGZURANDIANLANDELEIBIE。

(3)CONGWAIGUANSHANGWUFAQUFENZURANDIANLANDEA、B、CLEIBIE,ZHIYOUKAOZHIZAOCHANGJIAJINXINGGONGHUOBAOZHENG,YINCIZAISHEJIXUANYONGSHIYINGSHENZHONGXUANZEDIANLANZHIZAOCHANGJIA。

(4)WULUDIYANZURANDIANLANYUHANLUZURANDIANLANXIANGBI,YOUDIFUSHI、DIYANDEYOUDIAN,DANDIANXINGNENGJIJIXIEXINGNENGMINGXIANJIANGDI,SUOYIZAIJINXINGDIANLANFUSHESHI,WULUDIYANZURANDIANLANYINGJIAOHANLUZURANDIANLANYOUGENGDADEWANQUBANJING。

火狐体育app官网 (5)ZAIJINXINGDIANLANFUSHESHEJISHI,BUYIJIANGFEIZURANDIANLANHEZURANDIANLANBINGLIEFUSHE,BUYIJIANGBUTONGZURANLEIBIEDEZURANDIANLANBINGLIEFUSHE。

2.耐火电缆

耐火电缆火狐体育app官网是指:在规定试验条件下,试样在火焰中被燃烧,在一定时间内仍能保持正常运行的性能。它的根本特性就是:电缆在燃烧条件下仍然能维持该线路一段时间的正常工作。通俗地讲就是,万一失火,电缆不会一下就燃烧,回路比较安全。因此耐火电缆与阻燃电缆的主要区别是:耐火电缆在火灾发生时能维持一段时间的正常供电,而阻燃电缆不具备这个特性。这个特性决定了耐火电缆在现代都市及工业建筑中起着重要的作用,因为一旦火灾发生,控制、监视、导引及报警等系统供电回路必须维持正常工作。因此,该电缆主要使用在应急电源至用户消防设备、火灾报警设备、通风排烟设备、导行灯、紧急电源插座、紧急用电梯等供电回路。

火狐体育app官网 2.1NAIHUODIANLANDEJIEGOUTEDIAN

火狐体育app官网 NAIHUODIANLANDEJIEGOUHEPUTONGDIANLANJIBENXIANGTONG,BUTONGZHICHUZAIYUNAIHUODIANLANDEDAOTICAIYONGNAIHUOXINGNENGHAODETONGDAOTI(TONGDERONGDIANWEI1 083℃),BINGZAIDAOTIHEJUEYUANCENGJIANZENGJIANAIHUOCENG。NAIHUOCENGYOUDUOCENGYUNMUDAIRAOBAOERCHENG。YINWEIBUTONGYUNMUDAIDEYUNXUGONGZUOWENDUCHAYIJIAODA,YINCIDIANLANNAIHUOXINGNENGDEGUANJIANSHIYUNMUDAI。

2.2NAIHUODIANLANDEFENLEI

ZAIZHONGGUOPUTONGNAIHUODIANLANFENWEIALEIHEBLEI:BLEIDIANLANNENGGOUZAI750℃~800℃DEHUOYANZHONGHEEDINGDIANYAXIANAISHOURANSHAOZHISHAO90minERDIANLANBUBEIJICHUAN(JI3ABAOXIANSIBURONGDUAN)。ZAIGAIJINNAIHUOCENGZHIZAOGONGYIHEZENGJIANAIHUOCENGDENGFANGFADEJICHUSHANGYOUYANZHILEALEINAIHUODIANLAN,TANENGGOUZAI950℃~1 000℃DEHUOYANZHONGHEEDINGDIANYAXIANAISHOURANSHAOZHISHAO90minERDIANLANBUBEIJICHUAN(JI3ABAOXIANSIBURONGDUAN)。ALEINAIHUODIANLANDENAIHUOXINGNENGYOUYUBLEI。LINGWAI,KUANGWUJUEYUANDIANLANSHINAIHUODIANLANZHONGXINGNENGJIAOYOUDEYIZHONG,TASHIYOUTONGXIN、TONGHUTAO、YANGHUAMEIJUEYUANCAILIAOJIAGONGERCHENGDE,JIANCHENGMI(minerl insulated cables)DIANLAN。GAIDIANLANWANQUANYOUWUJIWUGOUCHENGNAIHUOCENG,ERPUTONGNAIHUODIANLANDENAIHUOCENGSHIYOUWUJIWUYUYIBANYOUJIWUFUHEERCHENG,YINCIMIDIANLANDENAIHUOXINGNENGJIAOPUTONGNAIHUODIANLANGENGYOUQIEBUHUIYINRANSHAOERFENJIECHANSHENGFUSHIXINGQITI。MIDIANLANJUYOULIANGHAODENAIHUOTEXINGQIEKEYIZHANGQIGONGZUOZAI250℃GAOWENZHIXIA,TONGSHIHAIYOUFANGBAO、NAIFUSHIXINGQIANG、ZAILIULIANGDA、NAIFUSHE、JIXIEQIANGDUGAO、TIJIXIAO、ZHONGLIANGQING、SHOUMINGZHANG、WUYANDETEDIAN。DANJIAGEGUI、GONGYIFUZA、SHIGONGNANDUDA,ZAIYOUGUANQU、ZHONGYAOMUJIEGOUGONGGONGJIANZHU、GAOWENCHANGSUODENGNAIHUOYAOQIUGAOQIEJINGJIXINGKEYIJIESHOUDECHANGHE,KECAIYONGZHEIZHONGNAIHUOXINGNENGHAODEDIANLAN。

2.3XUANYONGSHIZHUYIDEWENTI

根据耐火电缆火狐体育app官网的具体特性,设计人员在设计选用时应注意以下几个问题:

(1)DANGNAIHUODIANLANYONGYUDIANLANMIJIDEDIANLANSUIDAO、DIANLANJIACENGZHONG,HUOWEIYUYOUGUAN、YOUKUFUJINDENGYIRANCHANGSUOSHI,YINGSHOUXIANXUANYONGALEINAIHUODIANLAN。CHUSHANGSHUQINGKUANGWAIQIEDIANLANPEIZHISHULIANGSHAOSHI,KECAIYONGBLEINAIHUODIANLAN。

火狐体育app官网 (2)NAIHUODIANLANDADUOYONGZUOYINGJIDIANYUANDEGONGDIANHUILU,YAOQIUHUOZAISHIZHENGCHANGGONGZUO。YOUYUHUOZAISHIHUANJINGWENDUJIJUSHANGSHENG,WEIBAOZHENGXIANLUDESHUSONGRONGLIANG,JIANGDIYAJIANG,DUIYUGONGDIANXIANLUJIAOZHANGQIEYANGEXIANDINGYUNXUDIANYAJIANGDEHUILU,YINGJIANGNAIHUODIANLANJIEMIANZHISHAOFANGDAYIDANG。

(3)NAIHUODIANLANBUNENGDANGZUONAIGAOWENDIANLANSHIYONG。

火狐体育app官网 (4)WEIJIANGDIDIANLANJIETOUZAIHUOZAISHIGUZHONGDEGUZHANGJILV,ZAIANZHUANGZHONGYINGJINLIANGJIANSHAOJIETOUSHULIANG,YIBAOZHENGXIANLUZAIHUOZAIZHONGNENGZHENGCHANGGONGZUO。RUGUOXUYAOZUOFENZHIJIEXIAN,YINGDUIJIETOUZUOHAOFANGHUOCHULI。

湘江电缆专业生产电线电缆20年,所生产的低烟无卤阻燃耐火电缆具有无卤素、不含铅镉铬汞,绿色环保,使用寿命长,性价比高等优势,广泛应用于地铁、高层建筑、商场、剧院、发电站、化学工厂、城市广场及其他公用事业等对电缆阻燃特性要求高的场合。如需要采购低烟无卤阻燃耐火电缆,请拨打服务热线:400-8844-588,或点击网站右侧在线咨询窗口咨询。

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