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亞博網頁登陸 | 2010-06-18

在石油化工行業中,閥門是應用廣泛但尚未引起足夠重視的管道元件。蘭州石化近日的重大事故,再次提醒我們要重視閥門安全,及時排查與維護,做到防患于未然。而物資采購部門,更應增強對閥門知識的了解,方能采購到適合石油石化行業使用的安全閥門。

閥門質量亟待提高

據不完全統計,我國共有閥門生產企業約 6000 余家,其中年產值超過 500 萬元的有 900 多家。有著“中國閥門之鄉”的浙江永嘉縣,僅該縣產的閥門就達 300 多種 3000 多個規格,廣泛用干國有大型企業和重點工程技術裝備。如今,經過多年的發展,我國的閥門企業數量居全世界第一。

congchanpinqingkuanglaikan,woguofamenxingyemuqianyijingnengshengchanshijidaleichanpin,ruzhafa、jiezhifa、qiufa、diefa、anquanfa、zhihuifa、jieliufa、xuansaifa、jianyafa、gemofa、shushuifa、jinjiqieduanfadeng,zuigaoshiyongwendudadao 570℃,zuidiwei -196℃,zuigaoyaliwei 600mpa,zuidatongjingdadao 5350 haomi。

jianyufamenxingyedexunmengfazhan,yeneipubianrenweifamenzaiwoguoyongyouguangkuodefazhankongjian。erzhezhuyaodeyiyuguojiazhengcedezhichihefamenchanpinshichangdeqiangjingxuqiu。suizhuguojiajiakuaizhenxingzhuangbeizhizaoyezhengcezhubutuijin,tongyongjichuzhizaoyefazhanjinyibudedaozhongdianzhichi。youqishijixiangshijigongcheng“xiqidongshu”、“xidiandongsong”、“nanshuibeidiao”dengxiangmudekaigongxuyaodaliangdefamenchanpinpeitao。lingwai,woguozhengmianlinzhugongyehuashidaidedaolai,shihuaxingye、dianlixingye、yejinxingye、huagongxingyehechengshijianshedengshiyongfamendahujiangzengqiangduifamenchanpindexuqiu。liru,dianlixingye“shiyiwu”qijianzaimeidianjizuda、zhongxingkaigongxiangmusuoxufamenyucezongjiwei:famenzongxuqiuliang 15.3 wandun,nianjunxuqiuzui 3.06 wandun;famenzongxuqiue 39.6 yiyuan,nianjunxuqiuewei 7.92 yiyuan。lingwai,zhongguozhengzhujianchengweishijieshangzuidadejiagongchang,famenchanpindejiagongzhizuomianlingengdadefazhankongjian。

danshiwoguofamenxingyerengranhuancunzaizhuyixiewenti,ruwoguofamenqiyezhuyaoyidicengci、xiaoguimo、jiatingzuofangshiqiyeweizhu。zaichanpinshang,youyuzhongfutouzi,jishuyinjinbugou,woguofamenqiyedezhudaochanpinrengranshidizhiliangdedazhongchanpin。muqianwoguoqiyeshengchandegezhongfamenpubiancunzaizhuwailou、neilou、waiguanzhiliangbugao、shoumingduan、caozuobulinghuoyijifamendiandongzhuangzhiheqidongzhuangzhibukekaodengquedian,bufenchanpinzhixiangdangyushangshiji 80 niandaichudeguojishuiping,yixiegaowengaoyaheguanjianzhuangzhishangxuyaodefamenrengranyilaijinkou。lingwai,woguofamenxingyezaichanyejiegou、famengongyedechanyelian,yijixingyedezhuanyehuachengdushangjunyuguowaiqiyecunzaijiaodadechaju。

youganwoguofamenchanpinduozaididuanpaihuai,zaihedian、shihuadengxingyefuzagongkuangxiashiyonggaoduanfamendequewei,daozhiwoguofamenzaishuliangshangyaoyaolingxian,quezaizhiliangshangshuyuwaiguo。genjuxiangguanbumentongji,woguomeinianfamenshichangchengjiaoegaoda 500 yiyuanzuoyou,qizhong 100 duoyiyuandeshichangbeiguowaifamenqiyezhanling。youyeneirenshibiaoshi,zaiwoguomuqiandefamenshichangshang,chudiyafamendadaoguojishichangnengjieshoudeshuipingwai,gaoyafamenrengranxuyaodaliangyikaojinkou。

閥門采購中的注意事項

jianyufamenzaishengchanzhongdezhongyaozuoyong,duiyufamencaigourenyuantichulejiaogaodeyaoqiu。zaigeleihuagong、shihua、shiyoutianranqizhuangzhizhong,guandaocailiaofeiyongyuezhanxiangmuzongtouzide 15%~20%,erfamenyouzhanguandaocailiaofeiyongde 40%~50%。yinciwuluncongshiyongjiaodukanhuanshicongjingjijiaodukan,famendexuanyongcaigou,biranhuishoudaotouzihuochengbaofangdegaoduzhongshi。

據了解,化工用閥門有四個特點,即:種類、規格、型式多;所處的工作條件復雜、嚴酷;自身結構繁雜,技術要求高,制造困難,故有小型設備之稱;地位重要但又是管道設備中最薄弱環節。這些特點使得閥門的設計選型、選材和制造都很困難。因此,閥門選用(包括類型、材質、形式等)是否得當,閥門制造質量的優劣,將直接影響裝置的運行,甚至危及工廠和操作人員的生命安全。據專家介紹,在采購閥門時要對其通用要求、閥門標質、變速傳動箱、操作機構、內外防腐等要素進行謹慎的考慮。


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