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id="printableview"> <h3> 高頻變壓器油泵的基本常識(shí)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(shí)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(yùn)行的三相異步電動(dòng)機(jī)直軸驅(qū)動(dòng)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(jī)械。離心式變壓器油泵適用于變壓器強(qiáng)油風(fēng)冷卻器;軸流式變壓器油泵(低揚(yáng)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(dòng)電機(jī)結(jié)構(gòu)劃分：目前國(guó)內(nèi)配套采用 ①激進(jìn)三相異步電動(dòng)機(jī)專用潛油設(shè)計(jì)的普通型變壓器油泵。②軸向氣隙(盤式電機(jī))電機(jī)驅(qū)動(dòng)的盤式變壓器油泵。兩種結(jié)構(gòu)的差別主要是驅(qū)動(dòng)電動(dòng)機(jī)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(yùn)行中須及時(shí)更換磨損的軸承，以防止轉(zhuǎn)子落下引起強(qiáng)烈機(jī)械摩擦。目前國(guó)外仍普遍大量采用的還是激進(jìn)三相異步電動(dòng)機(jī)專用設(shè)計(jì)的普通型變壓器油??/span></p> <p> </p> <p><span style="font-size: 16px">　　揚(yáng)程、流量對(duì)于每一種特定型號(hào)的泵而言是不可替代的，因?yàn)槊糠N型號(hào)泵的特性曲線上只有一點(diǎn)是效率最高的，泵工作的這一點(diǎn)叫額定工況點(diǎn)。泵工作在這一區(qū)域時(shí)，不只效率高，而且噪音低，功耗合理，運(yùn)轉(zhuǎn)平穩(wěn)，無(wú)有害渦流沖擊和氣蝕損害，能夠堅(jiān)持臨時(shí)可靠運(yùn)行??/span></p> <p> </p> <p><span style="font-size: 16px">　　以上所述工況點(diǎn)的選擇：由主變冷卻器強(qiáng)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(diǎn)就是油泵的額定工況點(diǎn)。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(yùn)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(guó)內(nèi)各電力網(wǎng)局根據(jù)國(guó)電公司的要求：為提高變壓器油泵軸承運(yùn)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(dá)到4極電??油泵的流量、揚(yáng)程，勢(shì)必要靠增加葉輪直徑解決，旋轉(zhuǎn)機(jī)械的直徑增加則運(yùn)行穩(wěn)定性會(huì)下降，而且6極驅(qū)動(dòng)電機(jī)比4極電機(jī)的直徑要大。這樣，替代過(guò)程中，某些老式的冷卻器安裝尺寸很難實(shí)現(xiàn)??/span></p> <p> </p> <p><span style="font-size: 16px">　　目前國(guó)內(nèi)許多單位大量配套采用軸向氣隙(盤式電機(jī))電機(jī)驅(qū)動(dòng)的盤式變壓器油泵(這種油泵適宜作成低??000??分以??此類問(wèn)題將更加突出，因?yàn)楸P式電機(jī)的軸向磁拉力是很強(qiáng)的就是靠這種旋轉(zhuǎn)的軸向磁拉力進(jìn)行磁電耦合使轉(zhuǎn)子旋轉(zhuǎn)起來(lái)。完成電能轉(zhuǎn)換的軸向磁拉力會(huì)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(qiáng)烈摩擦??/span></p> <p> </p> <p><span style="font-size: 16px">　　其實(shí)，目前國(guó)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(yùn)行穩(wěn)定性好。當(dāng)然，低轉(zhuǎn)速可以提高軸承的運(yùn)轉(zhuǎn)壽命。但是隨著葉輪直徑的增加，平衡問(wèn)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(yùn)行穩(wěn)定性的關(guān)鍵因素，搞不好反而會(huì)降低軸承的運(yùn)轉(zhuǎn)壽命??/span></p> <p> </p> <p><span style="font-size: 16px">　　盤式電機(jī)非常適于制成剎車電機(jī)：定、轉(zhuǎn)子間裝置剎車片，通電剎車，失電自由旋轉(zhuǎn)，所以國(guó)外普遍大量采用的還是激進(jìn)三相異步電動(dòng)機(jī)專用設(shè)計(jì)的普通型</span><strong><a href="http://www.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(jī)變壓器油泵作為一種新產(chǎn)品加以廣泛采用。如果運(yùn)行中忽略對(duì)軸承的嚴(yán)密監(jiān)控，隨著這種結(jié)構(gòu)油泵運(yùn)行時(shí)間的累計(jì)，事故的概率會(huì)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(yè)</a>", "首頁(yè)"); 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(yè)</a>", "尾頁(yè)"); 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 { 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