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"news"; var ARR_AD_MARK = ["news_detail_1", "news_detail_2", "news_detail_3"]; var SID = "0001,0002,0006"; //權(quán)限ID var AUTHORITY_ID = ""; </script> <script src="/JS/Cls_jsPage.js"></script>  <div id="6aplaizydtj" class="content"> <div id="6aplaizydtj" class="plc2"> 當(dāng)前位置??a href="/">首頁</a> » <a href="/news/">資訊中心</a> » <a href="/News/News-0001,0002,0006.shtml"> 晨飛資訊</a> » <a href="/Article/gaopinbianyaqiyouben_1.html">高頻變壓器油泵的基本常識你知道多少？</a></div> <div id="6aplaizydtj" class="list4nr"> <div id="6aplaizydtj" class="n_info_con" id="printableview"> <h3> 高頻變壓器油泵的基本常識你知道多少？</h3> <div id="6aplaizydtj" class="info_con_tit"> <div id="6aplaizydtj" class="info_con_tit"> <div id="6aplaizydtj" class="n_tit"> <span>文章出處??a href=""><a >深圳市晨飛電子有限公??/a></a></span><span>網(wǎng)責(zé)任編輯：<a >NSW</a></span><span>作者：<a >NSW</a></span><span>人氣??span id="cntrHits">-</span></span><span>發(fā)表時間??014-09-03 14:51:00</span> <div id="6aplaizydtj" class="newchang">  <div class="6aplaizydtj" id="ckepop"> <a class="jiathis jiathis_txt jtico jtico_jiathis" target="_blank">分享到：</a> <a class="jiathis_button_qzone">QQ空間</a> <a class="jiathis_button_tsina"> 新浪微博</a> <a class="jiathis_button_tqq">騰訊微博</a> <a class="jiathis_button_tsohu">搜狐微博</a> <a class="jiathis_button_t163">網(wǎng)易微博</a> <a class="jiathis_button_tools_1"></a><a class="jiathis_button_tools_2"></a> </div> <script type="text/javascript"> var jiathis_config = { "data_track_clickback": true };</script> <script type="text/javascript" src="http://v2.jiathis.com/code/jia.js?uid=899792" charset="utf-8"></script>  </div> </div> </div> </div> <div class="6aplaizydtj" id="cntrBody"> <p>　　<span style="font-size: 16px">變壓器油泵，一種全密封結(jié)構(gòu)的內(nèi)置潛油運行的三相異步電動機直軸驅(qū)動一離心式或軸流式葉片泵。專用于輸送變壓器絕緣油介質(zhì)的流體機械。離心式變壓器油泵適用于變壓器強油風(fēng)冷卻器;軸流式變壓器油泵(低揚程、大流量)適用于變壓器片式散熱器??/span></p> <p> </p> <p><span style="font-size: 16px">　　按驅(qū)動電機結(jié)構(gòu)劃分：目前國內(nèi)配套采用 ①激進三相異步電動機專用潛油設(shè)計的普通型變壓器油泵。②軸向氣隙(盤式電機)電機驅(qū)動的盤式變壓器油泵。兩種結(jié)構(gòu)的差別主要是驅(qū)動電動機不同，使用功能、裝置形式完全相同。但是由于盤式泵其特有的軸向磁拉力作用，運行中須及時更換磨損的軸承，以防止轉(zhuǎn)子落下引起強烈機械摩擦。目前國外仍普遍大量采用的還是激進三相異步電動機專用設(shè)計的普通型變壓器油??/span></p> <p> </p> <p><span style="font-size: 16px">　　揚程、流量對于每一種特定型號的泵而言是不可替代的，因為每種型號泵的特性曲線上只有一點是效率最高的，泵工作的這一點叫額定工況點。泵工作在這一區(qū)域時，不只效率高，而且噪音低，功耗合理，運轉(zhuǎn)平穩(wěn)，無有害渦流沖擊和氣蝕損害，能夠堅持臨時可靠運行??/span></p> <p> </p> <p><span style="font-size: 16px">　　以上所述工況點的選擇：由主變冷卻器強油循環(huán)油回路的管網(wǎng)系統(tǒng)阻力特性曲線所決定的，不同類型的冷卻器和主變油路循環(huán)結(jié)構(gòu)，其管網(wǎng)特性曲線不同。管網(wǎng)系統(tǒng)阻力特性曲線與變壓器油泵工作特性曲線的交點就是油泵的額定工況點。因此，就變壓器油泵的替代性而言，不同水力參數(shù)或降低水力參數(shù)的隨意替代是不可取的關(guān)系主變的平安運行和冷卻器的額定換熱容量??/span></p> <p> </p> <p><span style="font-size: 16px">　　目前，國內(nèi)各電力網(wǎng)局根據(jù)國電公司的要求：為提高變壓器油泵軸承運轉(zhuǎn)壽命，將??450????4極電??油泵，改??000????6極電??以下的油泵??/span></p> <p> </p> <p><span style="font-size: 16px">　　1000????6極電??/span><span style="font-size: 16px">)變壓器油泵要達到4極電??油泵的流量、揚程，勢必要靠增加葉輪直徑解決，旋轉(zhuǎn)機械的直徑增加則運行穩(wěn)定性會下降，而且6極驅(qū)動電機比4極電機的直徑要大。這樣，替代過程中，某些老式的冷卻器安裝尺寸很難實現(xiàn)??/span></p> <p> </p> <p><span style="font-size: 16px">　　目前國內(nèi)許多單位大量配套采用軸向氣隙(盤式電機)電機驅(qū)動的盤式變壓器油泵(這種油泵適宜作成低??000??分以??此類問題將更加突出，因為盤式電機的軸向磁拉力是很強的就是靠這種旋轉(zhuǎn)的軸向磁拉力進行磁電耦合使轉(zhuǎn)子旋轉(zhuǎn)起來。完成電能轉(zhuǎn)換的軸向磁拉力會使軸承的磨損量間隙直接轉(zhuǎn)化為定、轉(zhuǎn)子間氣隙的減少，直至定、轉(zhuǎn)子鐵與鐵的強烈摩擦??/span></p> <p> </p> <p><span style="font-size: 16px">　　其實，目前國內(nèi)外泵類產(chǎn)品是向高速、高效方向發(fā)展。適當(dāng)高轉(zhuǎn)速的高頻變壓器油泵不只效率高而且體積小，運行穩(wěn)定性好。當(dāng)然，低轉(zhuǎn)速可以提高軸承的運轉(zhuǎn)壽命。但是隨著葉輪直徑的增加，平衡問題將更加突出，特別是作為葉片泵其葉片鑄型、扭曲角度的一致性在工藝上誤差難免，這些都是影響運行穩(wěn)定性的關(guān)鍵因素，搞不好反而會降低軸承的運轉(zhuǎn)壽命??/span></p> <p> </p> <p><span style="font-size: 16px">　　盤式電機非常適于制成剎車電機：定、轉(zhuǎn)子間裝置剎車片，通電剎車，失電自由旋轉(zhuǎn)，所以國外普遍大量采用的還是激進三相異步電動機專用設(shè)計的普通型</span><strong><a href="http://m.linhang.com.cn/Products/products-12081703391.html"><span style="font-size: 16px">高頻變壓??/span></a></strong><span style="font-size: 16px">油泵。只有我還在將盤式電機變壓器油泵作為一種新產(chǎn)品加以廣泛采用。如果運行中忽略對軸承的嚴密監(jiān)控，隨著這種結(jié)構(gòu)油泵運行時間的累計，事故的概率會加大??/span></p> <p> </p> </div> <div id="6aplaizydtj" class="apage" id="showfenye">  <script type="text/javascript"> var pagecont=1; if(pagecont > 2) { var ss = new Cls_jsPage(1, 1, 5, "ss"); ss.setPageSE("gaopinbianyaqiyouben_", ".html"); ss.setPageInput("Page"); ss.setUrl(""); ss.setPageFrist("<a disabled='true'class='ob'>首頁</a>", "首頁"); ss.setPagePrev("<a disabled='true'class='ob'>上一??/a>", "上一??); ss.setPageNext("<a disabled='true'class='ob'>下一??/a>", "下一??); ss.setPageLast("<a disabled='true'class='ob'>尾頁</a>", "尾頁"); ss.setPageText("{$PageNum}", "{$PageNum}"); ss.setPageTextF("{$PageTextF}", "{$PageTextF}"); ss.setPageSelect("{$PageNum}", "{$PageNum}"); ss.setPageCss("o", "", ""); ss.setHtml("<div id="6aplaizydtj" class='o'>{$PageFrist}{$PagePrev}{$PageText}{$PageNext}{$PageLast}</div>"); ss.Write(); } else { document.getElementById("showfenye").style.display="none"; } </script>  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