ï»?!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 分析å¯ÆD‡´çŸ›_®¶åº„机械密ž®å¼‚常的原因 - 矛_®¶åº„恒˜qåŒ–工设备有限公å?/title> <meta name="Keywords" content=""> <link type="text/css" href="/template/henyunhuagong/lib/style.css" rel="stylesheet"> <link href="/template/henyunhuagong/lib/foucsbox.css" rel="stylesheet" type="text/css" /> <script src="/template/henyunhuagong/lib/jquery-1.9.1.min.js" type="text/javascript"></script> <script src="/template/henyunhuagong/lib/foucsbox.js" type="text/javascript"></script> <meta http-equiv="Cache-Control" content="no-transform" /> <meta http-equiv="Cache-Control" content="no-siteapp" /> </head> <body> <div style="position:fixed;left:-9000px;top:-9000px;"><noframes id="nvuuc"></noframes><noframes id="nvuuc"></noframes><delect id="nvuuc"><rt id="nvuuc"></rt></delect><bdo id="nvuuc"></bdo><rt id="nvuuc"><bdo id="nvuuc"><delect id="nvuuc"></delect></bdo></rt><delect id="nvuuc"><noframes 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2023-01-11</h2> <h2>来源:<a href='http://www.lowbao.cn/news/322.html'>http://www.lowbao.cn/news/322.html</a> </h2> <ul> <p style="text-indent:2em;"> 矛_®¶åº?a href="/jxmfj/" target="_blank">机械密封</a>异常主要有三个原å›? </p> <p style="text-indent:2em;"> (1)密封面是敞开的ã€?</p> <p style="text-indent:2em;"> 在维修机械密ž®æ—¶åQ?5%的密ž®å¤±æ•ˆä¸æ˜¯ç£¨æŸé€ æˆçš„,而是¼‚¨æŸå‰çš„泄漏。当密封面打开æ—Óž¼Œä»‹è´¨ä¸­çš„å›ÞZ½“颗粒在液体压力的作用下进入密ž®é¢ã€‚密ž®é¢ž®é—­åŽï¼Œ˜q™äº›å›ÞZ½“颗粒嵌在软环表面åQŒå®žé™…上成了“砂轮”,会损伤硬环表面ã€?</p> <p style="text-indent:2em;"> ç”׃ºŽåŠ¨çŽ¯æˆ–橡胶圈固定在èáu(å¥?上,重要官员串联˜qåŠ¨æ—Óž¼ŒåŠ¨çŽ¯ä¸èƒ½åŠæ—¶é…åˆåQŒä‹É密封面打开åQŒå¯†ž®é¢åœ¨åŽé¢å…³é—­ï¼Œå›ÞZ½“颗粒˜q›å…¥å¯†å°é¢ã€‚同时èáu(å¥?与滑动部分之间有å›ÞZ½“颗粒åQŒä¼šå½±å“Š™¡èƒ¶åœˆæˆ–动环的滑åŠ?相对于动密封点,常见故障)。另外,介质会在Š™¡èƒ¶åœˆä¸Žè½?å¥?的摩擦部位结æ™Óž¼Œå¼¹ç°§å¤„会有固体物质,从而打开密封面ã€?</p> <p style="text-indent:2em;"> (2)密封面过热ã€?</p> <p style="text-indent:2em;"> ç”׃ºŽå¯†å°é¢å¾ˆçƒ­ï¼ŒŠ™¡èƒ¶åœˆçš„使用温度应低于设计规根{€‚橡胶和聚四氟乙烯的使用温度ä¸?16℃,丁腈Š™¡èƒ¶çš„ä‹É用温度äؓ162℃。虽然它们能承受更高的温度,但密ž®é¢äº§ç”Ÿçš„热量更高,所以橡胶圈有不断硫化的危险åQŒä¹‹åŽä¼šå› å¤±åŽÕd¼¹æ€§è€Œæ³„漏ã€?</p> <p style="text-indent:2em;"> 密封面之间的介质受热会结æ™Óž¼Œå¦‚积¼„»I¼Œå¯ÆD‡´æ»‘动部äšg¾_˜ä½åQŒå¯†ž®é¢å‡ç»“。此外,有些聚合物会因过热而结焦,有些液体会失åŽÀL¶¦æ»‘甚至闪蒸ã€?</p> <p style="text-indent:2em;"> ˜q‡çƒ­ä¸ä»…会改变介质的状态,˜q˜ä¼šå¢žåŠ ä»‹è´¨çš„腐蚀速度。äؓ了降低比压和防止˜q‡çƒ­åQŒåœ¨é‡‘属部äšg变åŞ、合金表面裂¾U¹å’Œéƒ¨åˆ†æ¶‚层裂纹的设计中应采用åã^衡式机械密封ã€?</p> <p style="text-indent:2em;"> (3)大小差异 </p> <p style="text-indent:2em;"> <a href="/supply/97.html" target="_blank">矛_®¶åº„机械密ž®?/a>安装必须有正¼‹®çš„装配公差。èáu(å¥?必须有适当的表面粗¾p™åº¦å’Œæ­£¼‹®çš„ž®ºå¯¸åQŒä½†åˆ‰™€ å•†å¾ˆå°‘提供公差数据åQŒè¿™å¯¹å®‰è£…非帔R‡è¦ã€‚石家庄机械密封的尺寸精度和形位公差必须满èƒö囄¡º¸è¦æ±‚åQŒå¦åˆ™ä¼šå¯ÆD‡´å¯†å°˜q‡æ—©å¤±æ•ˆã€?</p> <p style="text-align:center;text-indent:2em;"> <img src="/uploads/image/20230111/20230111105703_9803.jpg" alt="矛_®¶åº„机械密ž®? width="400" height="400" title="矛_®¶åº„机械密ž®? align="" /> </p> <p 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