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鑄鐵鑲銅閘門選購注意事項(xiàng)

發(fā)布時(shí)間:2019-05-26 13:40:02  來源:水利機(jī)械網(wǎng)  作者:河畔水利機(jī)械  瀏覽量:95  文章字?jǐn)?shù):997 字 預(yù)計(jì)3分鐘讀完
鑄鐵鑲銅閘門選購首先要選用上裝式結(jié)構(gòu),在高壓、大口徑條件下減少了閥體本身的銜接螺栓,增強(qiáng)了閥門的可靠性且能克服體系自重對(duì)閥門正常作業(yè)的影響。明桿式鑄鐵鑲銅閘門其結(jié)構(gòu)是由本設(shè)備手電兩用啟閉機(jī)、鑄鐵閘門(門框、門體、閘桿)楔緊設(shè)備

  鑄鐵鑲銅閘門選購首先要選用上裝式結(jié)構(gòu),在高壓、大口徑條件下減少了閥體本身的銜接螺栓,增強(qiáng)了閥門的可靠性且能克服體系自重對(duì)閥門正常作業(yè)的影響。明桿式鑄鐵鑲銅閘門其結(jié)構(gòu)是由本設(shè)備手電兩用啟閉機(jī)、鑄鐵閘門(門框、門體、閘桿)楔緊設(shè)備、密封座、吊耳等部件組成。密封面上鑲有銅嵌條。鑄鐵鑲銅閘門最重要的就是門框、門體、閘桿,接下來主要講講門框和門體。


鑄鐵鑲銅閘門選購注意事項(xiàng)


  a、門框——門框由鑄鐵整體澆鑄而成,以便鑲?cè)肭嚆~密封面。并經(jīng)時(shí)效處理,具有足夠的斷面,以滿足使用要求。門框兩側(cè)自帶導(dǎo)槽,經(jīng)精加工之后作門體升降的導(dǎo)軌;門框平面經(jīng)龍門創(chuàng)及立車精加工并分別加工一道槽,以便鑲?cè)氡磴~密封面。按最大工作水頭15m設(shè)計(jì),其抗拉、抗壓、抗剪強(qiáng)度的安全系數(shù)不小于5,所有結(jié)合面全部進(jìn)行機(jī)械加工。 

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鑄鐵鑲銅閘門選購注意事項(xiàng)

   b、門體——門體為整體鑄造的方形開板,并經(jīng)時(shí)效處理,并應(yīng)在迎水面自帶“井”字形的加強(qiáng)筋,以適應(yīng)工作水壓的要求,加強(qiáng)筋的數(shù)量視閘門規(guī)格大小而定,一般間距為250~350mm之間,門體平面精加工并帶有鑲銅條的槽,以便鑲?cè)肭嚆~密封面,門體兩側(cè)精加工與門框側(cè)槽配合,形成上下滑軌。閘門工作面平面度誤差<0.3mm,粗糙度誤差<3.2um。門體側(cè)向設(shè)滑塊,能較好的消除軌道不平造成的局部高壓帶來的各種危害。 門體上端設(shè)有吊耳,與門板連接,吊耳的受力點(diǎn)靠近門板中心線,吊耳為鑄鋼,門體與吊耳的兩接觸面經(jīng)精加工之后用螺栓固定,吊耳的銷軸孔用鏜床加工。按最大工作水頭設(shè)計(jì),其抗拉、抗壓、抗剪強(qiáng)度的安全系數(shù)大于5,門體支承面及接觸面經(jīng)機(jī)械加工。

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