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铸铁镶铜闸门选购注意事项

发布时间:2019-05-26 13:40:02  来源:水利机械网  作者:河畔水利机械  浏览量:95  文章字数:997 字 预计3分钟读完
铸铁镶铜闸门选购首先要选用上装式结构,在高压、大口径条件下减少了阀体本身的衔接螺栓,增强了阀门的可靠性且能克服体系自重对阀门正常作业的影响。明杆式铸铁镶铜闸门其结构是由本设备手电两用启闭机、铸铁闸门(门框、门体、闸杆)楔紧设备

  铸铁镶铜闸门选购首先要选用上装式结构,在高压、大口径条件下减少了阀体本身的衔接螺栓,增强了阀门的可靠性且能克服体系自重对阀门正常作业的影响。明杆式铸铁镶铜闸门其结构是由本设备手电两用启闭机、铸铁闸门(门框、门体、闸杆)楔紧设备、密封座、吊耳等部件组成。密封面上镶有铜嵌条。铸铁镶铜闸门最重要的就是门框、门体、闸杆,接下来主要讲讲门框和门体。


铸铁镶铜闸门选购注意事项


  a、门框——门框由铸铁整体浇铸而成,以便镶入青铜密封面。并经时效处理,具有足够的断面,以满足使用要求。门框两侧自带导槽,经精加工之后作门体升降的导轨;门框平面经龙门创及立车精加工并分别加工一道槽,以便镶入表铜密封面。按最大工作水头15m设计,其抗拉、抗压、抗剪强度的安全系数不小于5,所有结合面全部进行机械加工。 

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铸铁镶铜闸门选购注意事项

   b、门体——门体为整体铸造的方形开板,并经时效处理,并应在迎水面自带“井”字形的加强筋,以适应工作水压的要求,加强筋的数量视闸门规格大小而定,一般间距为250~350mm之间,门体平面精加工并带有镶铜条的槽,以便镶入青铜密封面,门体两侧精加工与门框侧槽配合,形成上下滑轨。闸门工作面平面度误差<0.3mm,粗糙度误差<3.2um。门体侧向设滑块,能较好的消除轨道不平造成的局部高压带来的各种危害。 门体上端设有吊耳,与门板连接,吊耳的受力点靠近门板中心线,吊耳为铸钢,门体与吊耳的两接触面经精加工之后用螺栓固定,吊耳的销轴孔用镗床加工。按最大工作水头设计,其抗拉、抗压、抗剪强度的安全系数大于5,门体支承面及接触面经机械加工。

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