{"id":2207,"date":"2017-04-13T22:38:45","date_gmt":"2017-04-13T14:38:45","guid":{"rendered":"https:\/\/www.maituflow.com\/?p=2207"},"modified":"2019-05-13T20:50:05","modified_gmt":"2019-05-13T12:50:05","slug":"npsh","status":"publish","type":"post","link":"https:\/\/www.maituflow.com\/npsh\/","title":{"rendered":"\u5982\u4f55\u8ba1\u7b97\u6c34\u6cf5\u6700\u5927\u5b89\u88c5\u9ad8\u5ea6"},"content":{"rendered":"<p>\u79bb\u5fc3\u6cf5\u662f\u8f93\u6c34\u4e2d\u6700\u5e38\u7528\u7684\u6cf5\u4e4b\u4e00\uff0c\u6cf5\u623f\u5185\u7684\u5730\u576a\u6807\u9ad8\u53d6\u51b3\u4e8e\u6c34\u6cf5\u7684\u5b89\u88c5\u9ad8\u5ea6\uff0c\u6b63\u786e\u5730\u8ba1\u7b97\u6c34\u6cf5\u7684\u6700\u5927\u5141\u8bb8\u5b89\u88c5\u9ad8\u5ea6\uff0c\u4f7f\u6cf5\u7ad9\u65e2\u80fd\u5b89\u5168\u4f9b\u6c34\uff0c\u53c8\u80fd\u8282\u7701\u571f\u5efa\u9020\u4ef7\uff0c\u5177\u6709\u5f88\u91cd\u8981\u7684\u610f\u4e49\u3002<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-2208\" src=\"https:\/\/www.maituflow.com\/wp-content\/uploads\/2017\/05\/NPSH-1.jpg\" alt=\"\" width=\"640\" height=\"318\" srcset=\"https:\/\/www.maituflow.com\/wp-content\/uploads\/2017\/05\/NPSH-1.jpg 640w, https:\/\/www.maituflow.com\/wp-content\/uploads\/2017\/05\/NPSH-1-300x149.jpg 300w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/p>\n<p>\u4e3a\u4e86\u907f\u514d\u6c7d\u8680\u73b0\u8c61\u7684\u53d1\u751f\uff0c\u79bb\u5fc3\u6cf5\u7684\u5b89\u88c5\u9ad8\u5ea6\u9700\u8981\u8fdb\u884c\u975e\u5e38\u4ed4\u7ec6\u7684\u6821\u6838\u8ba1\u7b97\u3002\u6c34\u6cf5\u8fdb\u6c34\u4fa7\u88c5\u7f6e\u5f62\u5f0f\u793a\u610f\u56fe\u5982\u4e0b\uff1a<\/p>\n<p>\u6cf5\u7684\u5141\u8bb8\u51e0\u4f55\u5b89\u88c5\u9ad8\u5ea6\u4e0e\u591a\u65b9\u9762\u6761\u4ef6\u6709\u5173\uff0c\u516c\u5f0f\u5982\u4e0b\uff1a<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-2209\" src=\"https:\/\/www.maituflow.com\/wp-content\/uploads\/2017\/05\/NPSH-2.jpg\" alt=\"\" width=\"439\" height=\"107\" srcset=\"https:\/\/www.maituflow.com\/wp-content\/uploads\/2017\/05\/NPSH-2.jpg 439w, https:\/\/www.maituflow.com\/wp-content\/uploads\/2017\/05\/NPSH-2-300x73.jpg 300w\" sizes=\"(max-width: 439px) 100vw, 439px\" \/><\/p>\n<p>\u5f0f\u4e2d\uff1a[Hg]\u2014\u6cf5\u7684\u5141\u8bb8\u51e0\u4f55\u5b89\u88c5\u9ad8\u5ea6\uff0cm\uff1b\uff08\u8ba1\u7b97\u7ed3\u679c\u4f9b\u8bbe\u8ba1\u65f6\u5229\u7528\uff0c\u5b9e\u9645\u5b89\u88c5\u9ad8\u5ea6\u9700\u4f4e\u4e8e\u5141\u8bb8\u5b89\u88c5\u9ad8\u5ea6\uff09<\/p>\n<p>pe\u2014\u5438\u6c34\u6c34\u9762\u538b\u529b\uff0cPa\uff1b\uff08\u4e3a\u5438\u6c34\u6c34\u9762\u7684\u5927\u6c14\u538b\uff0c\u6d77\u62d4\u8d8a\u9ad8\u5927\u6c14\u538b\u8d8a\u4f4e\uff09<\/p>\n<p>pv\u2014\u9971\u548c\u84b8\u6c7d\u538b\u529b\uff0cPa\uff1b\uff08\u4e0e\u6c34\u6e29\u6709\u5173\uff0c\u6c34\u6e29\u8d8a\u9ad8\uff0c\u9971\u548c\u84b8\u6c7d\u538b\u529b\u8d8a\u9ad8\uff09<\/p>\n<p>\u03c1\u2014\u6d41\u4f53\u7684\u5bc6\u5ea6\uff0ckg\/m3\uff1b<\/p>\n<p>g\u2014\u91cd\u529b\u52a0\u901f\u5ea6\uff0c9.81m\/s2\uff1b<\/p>\n<p>[NPSHr]\u2014\u6c34\u6cf5\u7684\u5141\u8bb8\u6c7d\u8680\u4f59\u91cf\uff0cm\uff1b\uff08\u4e0e\u6c34\u6cf5\u6027\u80fd\u6709\u5173\uff0c\u7531\u6c34\u6cf5\u5382\u5bb6\u63d0\u4f9b\uff09<\/p>\n<p>hw\u2014\u5438\u5165\u7ba1\u8def\u4e2d\u7684\u6c34\u5934\u635f\u5931\uff0cm\u3002\uff08\u4e0e\u5438\u6c34\u7ba1\u8def\u8bbe\u8ba1\u6709\u5173\uff0c\u7531\u8bbe\u8ba1\u4eba\u5458\u786e\u5b9a\uff09<\/p>\n<p>\u7531\u4e0a\u5f0f\u53ef\u77e5\uff0c\u6d77\u62d4\u8d8a\u9ad8\u3001\u6c34\u6e29\u8d8a\u9ad8\u3001\u5141\u8bb8\u6c7d\u8680\u4f59\u91cf\u8d8a\u5927\u3001\u8fdb\u6c34\u7ba1\u8def\u6c34\u5934\u635f\u5931\u8d8a\u5927\uff0c\u5141\u8bb8\u51e0\u4f55\u5b89\u88c5\u9ad8\u5ea6\u8d8a\u5c0f\u3002<\/p>\n<p>\u4e0d\u540c\u6d77\u62d4\u65f6\u7684\u5927\u6c14\u53ca\u5bf9\u5e94\u7684\u6c34\u5934\u9ad8\u5ea6\u89c1\u4e0b\u8868\uff1a<\/p>\n<table border=\"1\" width=\"100%\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td>\u6d77\u62d4\u9ad8\u5ea6<br \/>\n\uff08m\uff09<\/td>\n<td>\u5927\u6c14\u538b\u529b<br \/>\n\uff08kPa\uff09<\/td>\n<td>\u6c34\u5934\u9ad8\u5ea6<br \/>\n\uff08m\uff09<\/td>\n<\/tr>\n<tr>\n<td>-600<\/td>\n<td>110.85<\/td>\n<td>11.3<\/td>\n<\/tr>\n<tr>\n<td>0<\/td>\n<td>101.32<\/td>\n<td>10.3<\/td>\n<\/tr>\n<tr>\n<td>200<\/td>\n<td>99.08<\/td>\n<td>10.1<\/td>\n<\/tr>\n<tr>\n<td>500<\/td>\n<td>95.16<\/td>\n<td>9.7<\/td>\n<\/tr>\n<tr>\n<td>1000<\/td>\n<td>90.25<\/td>\n<td>9.2<\/td>\n<\/tr>\n<tr>\n<td>1500<\/td>\n<td>84.36<\/td>\n<td>8.6<\/td>\n<\/tr>\n<tr>\n<td>2000<\/td>\n<td>79.46<\/td>\n<td>8.1<\/td>\n<\/tr>\n<tr>\n<td>3000<\/td>\n<td>70.63<\/td>\n<td>7.2<\/td>\n<\/tr>\n<tr>\n<td>4000<\/td>\n<td>61.80<\/td>\n<td>6.3<\/td>\n<\/tr>\n<tr>\n<td>5000<\/td>\n<td>53.95<\/td>\n<td>5.5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u4e0d\u540c\u6e29\u5ea6\u65f6\u6c34\u7684\u9971\u548c\u84b8\u6c7d\u538b\u5bf9\u5e94\u6c34\u5934\u9ad8\u5ea6\u89c1\u4e0b\u8868\uff1a<\/p>\n<table border=\"1\" width=\"100%\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td>\u6c34\u6e29<br \/>\n\uff08\u2103\uff09<\/td>\n<td>\u9971\u548c\u84b8\u6c7d\u538b\u529b<br \/>\n\uff08kPa\uff09<\/td>\n<td>\u6c34\u5934\u9ad8\u5ea6<br \/>\n\uff08m\uff09<\/td>\n<\/tr>\n<tr>\n<td>10<\/td>\n<td>1.23<\/td>\n<td>0.125<\/td>\n<\/tr>\n<tr>\n<td>20<\/td>\n<td>2.34<\/td>\n<td>0.238<\/td>\n<\/tr>\n<tr>\n<td>30<\/td>\n<td>4.24<\/td>\n<td>0.433<\/td>\n<\/tr>\n<tr>\n<td>40<\/td>\n<td>7.37<\/td>\n<td>0.752<\/td>\n<\/tr>\n<tr>\n<td>50<\/td>\n<td>12.33<\/td>\n<td>1.272<\/td>\n<\/tr>\n<tr>\n<td>60<\/td>\n<td>19.92<\/td>\n<td>2.066<\/td>\n<\/tr>\n<tr>\n<td>70<\/td>\n<td>31.16<\/td>\n<td>3.249<\/td>\n<\/tr>\n<tr>\n<td>80<\/td>\n<td>47.36<\/td>\n<td>4.97<\/td>\n<\/tr>\n<tr>\n<td>90<\/td>\n<td>70.10<\/td>\n<td>7.406<\/td>\n<\/tr>\n<tr>\n<td>100<\/td>\n<td>101.32<\/td>\n<td>10.786<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u4f8b\uff1a\u8d5b\u83b1\u9ed8VISO125X100-315-55\/2\u6c34\u6cf5\u6c7d\u8680\u4f59\u91cf\u4e3a[NPSHr]=3.29m\uff0c\u6b32\u5728\u6d77\u62d4500m\u9ad8\u5ea6\u7684\u5730\u65b9\u5de5\u4f5c\uff0c\u8be5\u5730\u533a\u590f\u5b63\u6700\u9ad8\u6c34\u6e29\u4e3a40\u2103\uff0c\u82e5\u5438\u6c34\u7ba1\u7684\u6c34\u5934\u635f\u5931\u4e3a1m\uff0c\u5219\u8be5\u6cf5\u5728\u5f53\u5730\u7684\u8fd0\u884c\u51e0\u4f55\u5b89\u88c5\u9ad8\u5ea6[Hg]\u8ba1\u7b97\u5982\u4e0b\uff1a<\/p>\n<p>\u8bbe\u5438\u6c34\u6c34\u9762\u538b\u529b\u4e3a\u5f53\u5730\u5927\u6c14\u538b\uff0c\u7531\u8868\u67e5\u5f97\u6d77\u62d4500m\u5904\u5927\u6c14\u538b\u59349.7m\uff1b<\/p>\n<p>\u6c34\u6e2940\u2103\u65f6\uff0c\u6c34\u7684\u9971\u548c\u84b8\u6c7d\u538b\u5934\u4e3a0.752m\uff1b<\/p>\n<p>\u8ba1\u7b97\u5f97\uff1a[Hg]=9.7-0.752-3.29-1=4.658m<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u79bb\u5fc3\u6cf5\u662f\u8f93\u6c34\u4e2d\u6700\u5e38\u7528\u7684\u6cf5\u4e4b\u4e00\uff0c\u6cf5\u623f\u5185\u7684\u5730\u576a\u6807\u9ad8\u53d6\u51b3\u4e8e\u6c34\u6cf5\u7684\u5b89\u88c5\u9ad8\u5ea6\uff0c\u6b63\u786e\u5730\u8ba1\u7b97\u6c34\u6cf5\u7684\u6700\u5927\u5141\u8bb8\u5b89\u88c5\u9ad8\u5ea6\uff0c\u4f7f\u6cf5\u7ad9\u65e2 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[],"class_list":["post-2207","post","type-post","status-publish","format-standard","hentry","category-news"],"views":2925,"_links":{"self":[{"href":"https:\/\/www.maituflow.com\/wp-json\/wp\/v2\/posts\/2207"}],"collection":[{"href":"https:\/\/www.maituflow.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.maituflow.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.maituflow.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.maituflow.com\/wp-json\/wp\/v2\/comments?post=2207"}],"version-history":[{"count":3,"href":"https:\/\/www.maituflow.com\/wp-json\/wp\/v2\/posts\/2207\/revisions"}],"predecessor-version":[{"id":4221,"href":"https:\/\/www.maituflow.com\/wp-json\/wp\/v2\/posts\/2207\/revisions\/4221"}],"wp:attachment":[{"href":"https:\/\/www.maituflow.com\/wp-json\/wp\/v2\/media?parent=2207"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.maituflow.com\/wp-json\/wp\/v2\/categories?post=2207"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.maituflow.com\/wp-json\/wp\/v2\/tags?post=2207"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}