| 隔膜泵的Cv计算到阀的口径确定，一般需经以下步骤 |
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kailiang43 发表于 2013-3-8 13:56:00 |
隔膜泵的Cv计算到阀的口径确定，一般需经以下步骤
1、计算流量的确定。现有的生产能力、设备负荷及介质的状况，决定计算流量的Qmax和Qmin.
2、阀前后压差的确定。根据已选择的阀流量特性及系统特点选定S(阻力系数)，再确定计算压差。
3、计算Cv。根据所调节的介质选择合适的计算公式和图表，求得Cmax和Cmin.
4、选用Cv。根据Cmax，在所选择的产品标准系列中选取>Cmax且与其最接近的一级C.
5、隔膜泵开度验算。一般要求最大计算流量时的开度≯90%，最小计算流量时的开度≮10%。
6、隔膜泵实际可调比的验算。一般要求实际可调比≮10。
7、阀座直径和公称直径的确定。验证合适后，根据C确定。
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| Re:在漫画中识别身边的违章 |
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cquyc(游客)发表评论于2017-3-2 21:00:39 |
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| Re:在漫画中识别身边的违章 |
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dinpt(游客)发表评论于2017-2-20 17:34:08 |
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| Re:在漫画中识别身边的违章 |
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pncgk(游客)发表评论于2017-2-17 22:23:56 |
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| Re:在漫画中识别身边的违章 |
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sxzdg(游客)发表评论于2016-10-22 18:20:00 |
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| Re:在漫画中识别身边的违章 |
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kotvz(游客)发表评论于2016-10-22 7:23:05 |
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| Re:在漫画中识别身边的违章 |
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ptxbf(游客)发表评论于2016-10-20 11:23:26 |
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| Re:在漫画中识别身边的违章 |
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ihwad(游客)发表评论于2016-10-18 2:25:31 |
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| Re:在漫画中识别身边的违章 |
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pdhlp(游客)发表评论于2016-10-9 20:44:47 |
http://www.esafety.cn/blog/u/18525/archives/2011/118613.html
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| Re:在漫画中识别身边的违章 |
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hctwz(游客)发表评论于2016-10-8 18:14:53 |
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| 原创 |
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原创(游客)发表评论于2016-9-30 10:05:01 |
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原创(游客)发表评论于2016-9-28 15:31:19 |
http://wztgywj.lofter.com/post/1e65f473_c6ed18f http://wztgywj.lofter.com/post/1e65f473_c6edc8e http://ywjseo.lofter.com/post/1e634752_c650d95 http://bjseoywj.lofter.com/post/1e66bf3e_c7104f2 http://seogsywj.lofter.com/post/1e634756_c6de13d http://seogsywj.lofter.com/post/1e634756_c6de78a http://ywjseo.lofter.com/post/1e634752_c6500af http://seogsywj.lofter.com/post/1e634756_c6de9ce http://wztgywj.lofter.com/post/1e65f473_c6eea14 http://seogsywj.lofter.com/post/1e634756_c6de196
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| 原创 |
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原创(游客)发表评论于2016-9-6 15:58:02 |
http://njryw2016.lofter.com/post/1e59a72f_c387f24 http://njryw2016.lofter.com/post/1e59a72f_c387f23 http://njryw2016.lofter.com/post/1e59a72f_c387f22 http://njryw2016.lofter.com/post/1e59a72f_c387f21 http://njryw2016.lofter.com/post/1e59a72f_c387f20 http://njryw2016.lofter.com/post/1e59a72f_c387f1f http://njryw2016.lofter.com/post/1e59a72f_c387f1e http://njryw2016.lofter.com/post/1e59a72f_c387f1d http://njryw2016.lofter.com/post/1e59a72f_c387f1c http://njryw2016.lofter.com/post/1e59a72f_c387f1b
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