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对于110kV¾U§ä»¥ä¸ŠXLPE¾lç¼˜ç”늼†æ¥è¯´åQŒåˆ™ä¸»è¦é‡‡ç”¨é‡‘属护层使电¾~†è¾¾åˆ°é˜²æ°´è¦æ±‚。金属护层的最大特ç‚ÒŽ˜¯å…ähœ‰å®Œå…¨ä¸é€è¿‡æ€§ï¼Œæ•…具有金属护套的南洋ç”늼†å…ähœ‰éžå¸¸å¥½çš„径向é˜ÀL°´æ€§èƒ½ã€‚金属护层种¾cÖM¸»è¦æœ‰åQšçƒ­åŽ‹é“å¥—、热压铅套、焊接皱¾Ušw“å¥—、焊接皱¾Ušw’¢å¥—、冷拔金属套½{‰ã€?</p> <p style="text-indent:2em;"> ç”늼†é˜²æ°´å½¢å¼ </p> <p style="text-indent:2em;"> ç”늼†çš„防水方式一般分为纵向阻水和径向径水两种。纵向阻水一般常用的有阻水纱、阻水粉及阻水带åQŒå®ƒä»¬çš„é˜ÀL°´æœºç†æ˜¯åœ¨˜q™äº›ææ–™ä¸­å«æœ‰ä¸€¿Ué‡æ°´å¯è†¨èƒ€çš„材料,当水份从ç”늼†ç«¯å¤´æˆ–是从护套缺陷中˜q›å…¥åŽï¼Œ˜q™ç§ææ–™ž®×ƒ¼šé‡æ°´˜q…速膨胀é˜ÀL­¢æ°´ä†¾æ²¿ç”µ¾~†çºµå‘进一步扩散,˜q™æ ·ž®±å®žçŽîCº†ç”늼†¾Uµå‘防水的目的。径向阻水则主要通过挤包HDPE非金属护层或热压、焊接、冷拔金属护套方式实现ã€?</p> <p style="text-indent:2em;"> ç”늼†é˜²æ°´è¯•éªŒä¾æ® </p> <p style="text-indent:2em;"> 防水试验æ–ÒŽ³•åQŒç”µ¾~†çºµå‘阻水性能目前可以通过IEC60502-1997ANNEXD或GB/T12706.2-2002åQˆæ ‡å‡†æ€§ç›®å½•ï¼‰é€æ°´è¯•éªŒæ¥è¿›è¡Œè¯•éªŒå’Œåˆ¤å®šåQ›è€Œç”µ¾~†å¾„向阻水性能åQŒç”µ¾~†åŽ‚家目前主要是通过间接的方法进行确定,比如‹‚€æŸ¥HDPE非金属护套的或非金属护套是否有缺é™øP¼Œå¦‚æžœ˜q™äº›æŠ¤å¥—被确定äؓ完好的,那么ž®Þp®¤ä¸ºç”µ¾~†å…·æœ‰è‰¯å¥½çš„径向é˜ÀL°´æ€§èƒ½ã€‚但˜q™ç§æ–ÒŽ³•æœ‰å¾ˆå¤šç”¨æˆ·éƒ½æå‡ºäº†ä¸€äº›ç–‘问,也引起一些争端,¾~ºå°‘说服力,所以电¾~†åˆ¶é€ åŽ‚家及用户现在都迫切需要有一¿Uè¯•éªŒæ–¹æ³•å¯¹ç”늼†çš„径向阻水性能做出判定åQŒé‚£æ ·å°±å¯ä»¥é¿å…åˆ‰™€ åŽ‚家与用户因缺ž®‘径向阻水试验方法而对ç”늼†å¾„向é˜ÀL°´æ€§èƒ½å¼•è“v的争议ã€?</p> <p style="text-indent:2em;"> ç”늼†é€‰æ‹©åŽŸåˆ™ </p> <p style="text-indent:2em;"> 在选用<a href="http://www.odhslm.icu/dxdl/" target="_blank">ç”늺¿ç”늼†</a>æ—Óž¼Œä¸€èˆ¬è¦æ³¨æ„ç”늺¿ç”늼†åž‹å·ã€è§„æ û|¼ˆå¯ég½“截面åQ‰çš„选择ã€?</p> <p style="text-indent:2em;"> ⒈电¾U¿ç”µ¾~†åž‹åïLš„选择 </p> <p style="text-indent:2em;"> 选用ç”늺¿ç”늼†æ—Óž¼Œè¦è€ƒè™‘用途,敯‚®¾æ¡äšg及安全性;例如åQšæ ¹æ®ç”¨é€”的不同åQŒå¯é€‰ç”¨ç”µåŠ›ç”늼†ã€?a href="http://www.odhslm.icu/supply/174.html" target="_blank">架空¾lç¼˜ç”늼†</a>、控制电¾~†ç­‰åQ›æ ¹æ®æ•·è®¾æ¡ä»¶çš„不同åQŒå¯é€‰ç”¨ä¸€èˆ¬å¡‘料绝¾~˜ç”µ¾~†ã€é’¢å¸¦é“ è£…电¾~†ã€é’¢ä¸é“ è£…电¾~†ã€é˜²è…ç”µ¾~†ç­‰åQ›æ ¹æ®å®‰å…¨æ€§è¦æ±‚,可选用é˜È‡ƒç”늼†ã€æ— å¤é˜»ç‡ƒç”µ¾~†ã€è€ç«ç”늼†½{‰ã€?</p> <p style="text-indent:2em;"> ⒉电¾U¿ç”µ¾~†è§„格的选择 </p> <p style="text-indent:2em;"> ¼‹®å®šç”늺¿ç”늼†çš„ä‹É用规æ û|¼ˆå¯ég½“截面åQ‰æ—¶åQŒä¸€èˆ¬åº”考虑发热åQŒç”µåŽ‹æŸå¤±ï¼Œ¾læµŽç”‰|µå¯†åº¦åQŒæœºæ¢°å¼ºåº¦ç­‰é€‰æ‹©æ¡äšgã€?</p> <p style="text-indent:2em;"> ç”늼†åŽ‚根据经验,低压动力¾U¿å› å…¶è´ŸèïL”µ‹¹è¾ƒå¤§ï¼Œæ•…一般先按发热条仉™€‰æ‹©æˆªé¢åQŒç„¶åŽéªŒ½Ž—其电压损失和机械强度;低压照明¾U¿å› å…¶å¯¹ç”µåŽ‹æ°´åã^要求较高åQŒå¯å…ˆæŒ‰å…è®¸ç”µåŽ‹æŸå¤±æ¡äšg选择截面åQŒå†éªŒç®—发热条äšg和机械强度;寚w«˜åŽ‹çº¿è·¯ï¼Œåˆ™å…ˆæŒ‰ç»‹¹Žç”µ‹¹å¯†åº¦é€‰æ‹©æˆªé¢åQŒç„¶åŽéªŒ½Ž—其发热条äšg和允许电压损失;而高压架½Iºçº¿è·¯ï¼Œ˜q˜åº”验算其机械强度ã€?</p> </div> <div class="mk"><div>上一æ?<a href="32.html">成都ç”늺¿ç”늼†åŽ‚家介绍其各部分构成与用é€?/a></div> <div>下一æ?<a href="30.html">四川电力ç”늼†åŽ‚家‹¹…è°ˆç”늺¿ç”늼†ä¿æŠ¤å¥—的应用优势</a></div> </div> <div class="xgbq mk">相关标签:<a 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