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zhaiyao:zhenduizhihuifazaiguoluyalirongqizhongsuoqidezhongyaozuoyong。duichuantongzhihuifayizhanka,mifengxielou,shiyongbulinghuodengwentijinxinglefenxi,bingjieshaolezhuanlichanpinxinxingzhitongshizhihuifa(zl0321198011 he zl032119811x)detedian。

關鍵詞:止回閥;鍋爐;結構改進

1 概述

止回閥廣泛用于石油、化工和電力供暖鍋爐等裝置中,防止流體倒流,保護設備安全運行。目前普通的止回閥結構有旋啟式和升降式等,由于這些產品存在易粘卡,密封不嚴,難以維修的問題,給設備安全運行帶來隱患。

普通止回閥結構圖(圖1)
圖1 普通止回閥

2 故障與分析

zhihuifashiguoluyalirongqidengshebeichangyongdezhongyaobujianzhiyi。ruzhinengguoluanzhuangdezhihuifaguanbishi,zhushuizhuangzhijiangzidonggeishui。danshidangzhihuifachuxiandongzuochihuan,bulinghuo,zhanka,mifengbuyanjidaoliudengqingkuangshi,zidongzhushuizhuangzhijiangbunengzidonggeishui,zhihaorengongcaiquxiangyingchulicuoshi,geishengchanyunxingzengtianlebushaoyinhuan。huanyouyoutianchouyouzhuyaocaiyoushebeideshizhengqifashengqi(zhuqiguo)shigaowengaoya(17mpa,352℃)zhuangzhi,ruzhuangzhiduanlutiaozhazaochengtingdianshigu,gaoyazhushuibengjiangtingzhigongzuo,cishidaliangzhengqidaohui,zhihuifajingguogaowenqishi,huiyaliliangbunengzhijiezuoyong,zaochengzhihuifabunenglinghuoguanbi,shebeianquanyunxingnanyibaozheng,jiangzaochengbuyingyoudesunshi。

3 改進

新型直通式止回閥結構圖(圖2)
圖2 新型直通式止回閥

zhenduiputongzhihuifa(tu1)cunzaidebuzu,shejikaifalexinxingzhitongshizhihuifa(tu2)。gaichanpindeqiuticaiyonglezhengtidanxingmifenglianghaodexiangjiaocailiao。zaigaowengaoyagongkuangshi,qiuticaiyongbuxiugangzhizao,zhengtifazuochengzhuixing。zaigaoyaxia,qiutilinghuohuidaozhuixingfazuo,dadaozidongguanbi。xinxingzhitongshizhihuifayihuoguojiazhuanli(zhuanlihao:zl0321198011 he zl032119811x)。

zhitongshizhihuifalianjiefangshiyouluowen、falanhehanjiedengjiegou,huankegenjuyonghuyaoqiucaiquqitalianjiefangshi。gaifajingshijishiyong,xiaoguolianghao,bucunzaizhankahemifengbuyandengxianxiang。yongyugaowengaoyagongkuangshi,caiyonggangqiu,yongyudiwendiyagongkuangshi,qiuticaiyongteshuxiangjiaoqiu。

用于低壓的螺紋和法蘭連接閥門,其閥體采用模具生產,用于高溫高壓的焊接連接閥門,其閥體采用棒材加工,節省材料,加工方便。

4 結語

zhitongshixinxingzhihuifadeyingyongshishebeianquanxishudedaotigao,gaifaliuzuxiao,qibilinghuo,mifengxingnenghao,shoudaoyonghuhuanying。


本文地址:http://zapped-it.net/tech/zhf/979.html


下一篇:底閥的特征定義與作用
上一篇:止回閥定義、作用及分類


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