{"id":27369,"date":"2024-06-08T12:46:01","date_gmt":"2024-06-08T04:46:01","guid":{"rendered":"https:\/\/sam-uk.com\/?p=27369"},"modified":"2024-06-08T12:46:09","modified_gmt":"2024-06-08T04:46:09","slug":"%e8%81%9a%e6%b0%af%e4%b9%99%e7%83%af%e7%ae%a1%e4%bb%b6%e7%9a%84%e5%8e%8b%e5%8a%9b%e6%8d%9f%e5%a4%b1","status":"publish","type":"post","link":"https:\/\/www.sam-uk.com\/zh\/pressure-loss-in-pvc-pipe-fittings-id6536176.html","title":{"rendered":"PVC \u7ba1\u4ef6\u7684\u538b\u529b\u635f\u5931"},"content":{"rendered":"
\n

\u5982\u4f55\u8ba1\u7b97\u6c34\u6cf5\u4e2d\u7684\u538b\u529b\u635f\u5931\u00a0PVC \u7ba1<\/a>?<\/strong><\/p>\n

\u7ba1\u9053\u4e2d\u7684\u538b\u529b\u635f\u5931\u5206\u4e3a\u538b\u529b\u635f\u5931\u548c\u5206\u538b\u635f\u5931\u3002<\/p>\n

\u8def\u5f84\u4e0a\u7684\u538b\u529b\u635f\u5931 Pf= ([lambda L\/d) P V^2\/2<\/p>\n

\u5c40\u90e8\u538b\u529b\u635f\u5931 Pj= sigma zeta Rho V^2\/2<\/p>\n

\u7ba1\u9053\u4e2d\u7684\u603b\u538b\u529b\u635f\u5931\u4e3a Pw=Pf+Pj= (lambda L\/d) V^2\/2+, V^2\/2=[, (V^2\/2) + V^2\/2\u3002<\/p>\n

\u5f0f\u4e2d\uff1aLambda \u7ba1\u9053\u7684\u963b\u529b\u7cfb\u6570\uff1bL - \u7ba1\u9053\u957f\u5ea6\uff1bD - \u7ba1\u9053\u76f4\u5f84\uff1bSigma - \u603b\u6570\u91cf\uff1bZeta - \u7ba1\u9053\u5c40\u90e8\u963b\u529b\u7cfb\u6570\uff1bP - \u6d41\u4f53\u5bc6\u5ea6\uff1bV - \u7ba1\u9053\u6d41\u901f\u3002<\/p>\n

\u5bf9\u4e8e\u957f\u7ba1\u9053\uff0c\u5c40\u90e8\u538b\u529b\u635f\u5931\u53ef\u4ee5\u5ffd\u7565\u3002\u7ba1\u9053\u4e2d\u7684\u603b\u538b\u529b\u635f\u5931\u4e3a Pw=Pf = (lambda L\/d) V^2\/2<\/p>\n

\u6216 Pw = Rho gsLQ^2<\/p>\n

\u8ba1\u7b97\u516c\u5f0fP--\u6d41\u4f53\u5bc6\u5ea6\uff1bG--\u91cd\u529b\u52a0\u901f\u5ea6\uff1bs--\u7ba1\u9053\u6bd4\u963b\uff1bL--\u7ba1\u9053\u957f\u5ea6\uff1bQ--\u7ba1\u9053\u6d41\u91cf\u3002<\/p>\n

\u7ba1\u9053\u6bd4\u963b\u4e0e\u963b\u529b\u7cfb\u6570\u7684\u5173\u7cfb\uff1aS=8 lambda \/ (g PI ^2d^5)<\/p>\n

Lambda \u548c s \u53ef\u7528\u4e8e\u68c0\u67e5\u6db2\u538b\u8ba1\u7b97\u624b\u518c\u3002<\/p>\n

\u538b\u529b\u635f\u5931\u7684\u8ba1\u7b97\u5b9e\u9645\u4e0a\u662f\u7ba1\u9053\u963b\u529b\u635f\u5931\u7684\u603b\u548c\u3002<\/strong><\/p>\n

PVC \u7ba1\u6750\u5206\u4e3a\u5c40\u90e8\u963b\u529b\u548c\u963b\u529b\uff1a 1\u3001\u5c40\u90e8\u963b\u529b\u662f\u7531\u7ba1\u6750\u9644\u4ef6\uff08\u5f2f\u5934\u3001\u4e09\u901a\u3001\u9600\u95e8\u7b49\uff09\u5f62\u6210\u7684\u3002\u5b83\u4e0e\u5c40\u90e8\u963b\u529b\u7cfb\u6570\u548c\u52a8\u538b\u6210\u6b63\u6bd4\u3002\u5c40\u90e8\u963b\u529b\u7cfb\u6570\u53ef\u6839\u636e\u9644\u5f55\u7684\u7c7b\u578b\u548c\u5f00\u53e3\u5c3a\u5bf8\u6309\u624b\u518c\u63a8\u5bfc\u5f97\u51fa\u3002\u52a8\u538b\u4e0e\u901f\u5ea6\u7684\u5e73\u65b9\u6210\u6b63\u6bd4\u30022.\u6cbf\u7ebf\u963b\u529b\u4e0e\u6469\u64e6\u963b\u529b\u4e58\u4ee5\u7ba1\u9053\u957f\u5ea6\u6210\u6b63\u6bd4\uff0c\u6bd4\u6469\u64e6\u529b\u7531\u7ba1\u9053\u76f4\u5f84\u3001\u5185\u58c1\u7c97\u7cd9\u5ea6\u548c\u6d41\u4f53\u901f\u5ea6\u51b3\u5b9a\u3002<\/p>\n

\u603b\u4e4b\uff0c\u7ba1\u9053\u963b\u529b\u7684\u5927\u5c0f\u4e0e\u6d41\u4f53\u7684\u5e73\u5747\u901f\u5ea6\u3001\u6d41\u4f53\u7684\u7c98\u5ea6\u3001\u7ba1\u9053\u7684\u5c3a\u5bf8\u3001\u7ba1\u9053\u7684\u957f\u5ea6\u3001\u6db2\u6c14\u6db2\u4f53\u4ee5\u53ca\u7ba1\u9053\u5185\u58c1\u7684\u5149\u6ed1\u5ea6\u6709\u5173\u3002\u8ba1\u7b97\u590d\u6742\uff0c\u5206\u7c7b\u591a\u6837\uff0c\u8bef\u5dee\u8f83\u5927\u3002\u5982\u679c\u6211\u4eec\u60f3\u4e86\u89e3\u5b83\uff0c\u5c31\u5e94\u8be5\u5b66\u4e60 \"\u6d41\u4f53\u529b\u5b66\"\uff0c\u5982\u679c\u96be\u4ee5\u7406\u89e3\u5b83\uff0c\u5c31\u5e94\u8be5\u5b66\u4e60 \"\u6d41\u4f53\u529b\u5b66\"\u3002<\/p>\n

\u5982\u4f55\u8ba1\u7b97 PVC \u7ba1\u9053\u4e2d\u7684\u6d41\u52a8\u538b\u529b<\/strong><\/p>\n

\u7ba1\u9053\u7684\u6d41\u52a8\u538b\u529b\u4e0e\u7ba1\u9053\u672b\u7aef\u7684\u6c34\u6e90\u538b\u529b\u6709\u5173\u3002\u538b\u529b\u5728\u7ba1\u9053\u6d41\u52a8\u8fc7\u7a0b\u4e2d\u4f1a\u53d1\u751f\u53d8\u5316\u3002\u5fc5\u987b\u6839\u636e\u4f2f\u52aa\u5229\u80fd\u91cf\u65b9\u7a0b\u8ba1\u7b97\u7ba1\u9053\u4e0a\u67d0\u4e00\u6bb5\u7684\u538b\u529b\uff0c\u5e76\u8003\u8651\u7ba1\u9053\u7684\u538b\u529b\u635f\u5931\u3002\u5bf9\u4e8e\u7b49\u76f4\u5f84\u7684\u76f4\u7ba1\uff0c\u957f\u5ea6\u4e3a L \u7684 PVC \u7ba1\u9053\u7684\u538b\u529b\u635f\u5931\u53ef\u6309\u4e0b\u5f0f\u8ba1\u7b97\u3002<\/p>\n

\u5fb7\u5c14\u5854 P= (lambda L\/d) Rho V^2\/2<\/p>\n

Lambda--PVC \u7ba1\u9053\u963b\u529b\u7cfb\u6570\uff1bL--PVC \u7ba1\u957f\u5ea6\uff1bD--PVC \u7ba1\u5185\u5f84\uff1bP--\u6c34\u5bc6\u5ea6\uff1bV--\u7ba1\u9053\u6d41\u901f\u3002<\/p>\n

\u5982\u679c\u60a8\u60f3\u4e86\u89e3\u6709\u5173 PVC \u7ba1\u548c\u00a0PVC \u7ba1\u4ef6<\/a>\u8bf7\u8054\u7cfb\u6211\u4eec\u3002<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

\u5982\u4f55\u8ba1\u7b97 PVC \u7ba1\u9053\u7684\u538b\u529b\u635f\u5931\uff1f\u7ba1\u9053\u4e2d\u7684\u538b\u529b\u635f\u5931\u5206\u4e3a\u538b\u529b\u635f\u5931\u548c\u5206\u538b\u635f\u5931\u3002\u6cbf\u7a0b\u538b\u529b\u635f\u5931 Pf= ([lambda L\/d) P V^2\/2 \u5c40\u90e8\u538b\u529b\u635f\u5931 Pj= sigma zeta Rho V^2\/2 \u7ba1\u9053\u4e2d\u7684\u603b\u538b\u529b\u635f\u5931\u4e3a Pw=Pf+Pj= (lambda L\/d) V^2\/2+, V^2\/2=[, (V^2\/2) +...<\/p>","protected":false},"author":12,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[427],"tags":[],"class_list":["post-27369","post","type-post","status-publish","format-standard","hentry","category-technical-guidance"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.sam-uk.com\/zh\/wp-json\/wp\/v2\/posts\/27369","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.sam-uk.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.sam-uk.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.sam-uk.com\/zh\/wp-json\/wp\/v2\/users\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/www.sam-uk.com\/zh\/wp-json\/wp\/v2\/comments?post=27369"}],"version-history":[{"count":0,"href":"https:\/\/www.sam-uk.com\/zh\/wp-json\/wp\/v2\/posts\/27369\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.sam-uk.com\/zh\/wp-json\/wp\/v2\/media?parent=27369"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.sam-uk.com\/zh\/wp-json\/wp\/v2\/categories?post=27369"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.sam-uk.com\/zh\/wp-json\/wp\/v2\/tags?post=27369"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}