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id="bjgdc32" class="leftbox clearfix"><h1>福建RH真空管道蝶閥材料頂耕國(guó)際貿(mào)易供應(yīng)</h1><div id="7uj3kml" class="proBig"><div id="uda33km" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737494296875/9390800.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="imedcgc" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737494296875/9390800.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="ftvnxdu" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)格要求：</span>面議</p><p><span>所在地：</span>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>福建RH真空管道蝶閥材料</p><p><span>***更新：</span>2020-06-01 05:14:41</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="32hif7o" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">頂耕國(guó)際貿(mào)易（上海）有限公司</a></p><p><span>聯(lián)系人：</span>查劍來(lái)</p><p><span>郵箱: </span></p><p><span>電話: </span>18521036598</p><p><span>傳真: </span>021_61637356</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>021-61637356</p><p><span>地址: </span>大葉公路5225號(hào)1幢2370室</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="8lh3vxj" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="87col7d" class="box"><p><p> 墊片不應(yīng)落地。密封圈連結(jié)處的泄漏原因：1、密封圈輾壓不嚴(yán)；2、密封圈與本體焊接，堆焊質(zhì)量差；3、密封圈連接螺紋、螺釘、壓圈松動(dòng)；4、密封圈連接而被腐蝕。維護(hù)方法：1、密封輾壓處泄漏應(yīng)注膠粘劑再輾壓固定；2、密封圈應(yīng)按施焊規(guī)范重新不解之補(bǔ)焊，福建RH真空管道蝶閥材料。堆焊處無(wú)法補(bǔ)焊時(shí)應(yīng)***原堆焊和加工；3、卸下螺釘、壓圈清洗，更換損壞的部件，研磨密封與連接座密合面，重新裝配。對(duì)腐蝕損壞大較大的部件，福建RH真空管道蝶閥材料，可用焊接，福建RH真空管道蝶閥材料、粘接等方法修復(fù)；4、密封圈連接面被腐蝕，可用研磨，粘接等方法修復(fù)，無(wú)法修復(fù)時(shí)用應(yīng)更換密封圈。關(guān)閉件脫落產(chǎn)生泄漏原因：1、操作不良，使關(guān)閉件卡死或超過(guò)上死點(diǎn)，連接處損壞斷裂；2、關(guān)閉件連接不牢固，松勁而脫落；3、選用連接件材質(zhì)不對(duì)，經(jīng)不起介質(zhì)的腐蝕和機(jī)械的磨損。維護(hù)方法：1、正確操作，關(guān)閉閥門(mén)不能用力過(guò)大，開(kāi)啟閥門(mén)不能超過(guò)上死點(diǎn)，閥門(mén)全開(kāi)后，手輪應(yīng)倒轉(zhuǎn)少許；2、關(guān)閉件與閥桿連接應(yīng)牢固，螺紋連接處應(yīng)有止退件；3、關(guān)閉件與閥桿連接用的緊固件應(yīng)經(jīng)受住介質(zhì)的腐蝕，并有一定的機(jī)械強(qiáng)度和耐磨性能。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="福建RH真空管道蝶閥材料" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737494296875/9390800.png"></div><p> 閥體和閥蓋的泄漏原因：1、鑄鐵件鑄造質(zhì)量不高，閥體和閥蓋體上有砂眼、松散組織、夾渣等缺點(diǎn)；2、天冷凍裂；3、焊接不良，存在著夾渣、未焊接，應(yīng)力裂紋等缺點(diǎn)；4、鑄鐵閥門(mén)被重物撞擊后損壞。維護(hù)方法：1、提高鑄造質(zhì)量，安裝前嚴(yán)格按規(guī)定進(jìn)行強(qiáng)度試驗(yàn)；2、對(duì)氣溫在0℃和0℃以下的閥門(mén)，應(yīng)進(jìn)行保溫或拌熱，停止使用的閥門(mén)應(yīng)排除積水；3、由焊接組成的閥體和閥蓋的焊縫，應(yīng)按有關(guān)焊接操作規(guī)程進(jìn)行，焊后還應(yīng)進(jìn)行探傷和強(qiáng)度試驗(yàn)；4、閥門(mén)上禁止推放重物，不允許用手錘撞擊鑄鐵和非金屬閥門(mén)，大口徑閥門(mén)的安裝應(yīng)有支架。填料處的泄露閥門(mén)的外漏，填料處占的比例為比較大。原因：1、填料選用不對(duì)，不耐介質(zhì)的腐蝕，不耐閥門(mén)高壓或真空、高溫或低溫的使用；2、填料安裝不對(duì)，存在著以小代大、螺旋盤(pán)繞接頭不良、上緊下松等缺點(diǎn)；3、填料超過(guò)使用期，已老化，喪失彈性；4、閥桿精度不高，有彎曲、腐蝕、磨損等缺點(diǎn)；5、填料圈數(shù)不足，壓蓋未壓緊；6、壓蓋、螺栓、和其他部件損壞，使壓蓋無(wú)法壓緊；7、操作不當(dāng)，用力過(guò)猛等；8、壓蓋歪斜，壓蓋與閥桿間空隙過(guò)小或過(guò)大，致使閥桿磨損，填料損壞。維護(hù)方法：1、應(yīng)按工況條件選用填料的材料和型式；2、按有關(guān)規(guī)定正確的安裝填料。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="福建RH真空管道蝶閥材料" src="https://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737494296875/9390800.png"></div><p> 液動(dòng)閥門(mén)一般由液動(dòng)閥門(mén)本體，液壓控制系統(tǒng)、電氣控制系統(tǒng)三部分組成，機(jī)電液一體化控制技術(shù)的水平，將決定液動(dòng)閥門(mén)產(chǎn)品的技術(shù)水平。閥門(mén)常用的液壓驅(qū)動(dòng)裝置有液壓缸直接推拉驅(qū)動(dòng)式、齒輪齒條擺動(dòng)油缸驅(qū)動(dòng)式、螺線式擺動(dòng)油缸驅(qū)動(dòng)式和多回轉(zhuǎn)液壓馬達(dá)驅(qū)動(dòng)式。液壓缸直接推拉驅(qū)動(dòng)式裝置常用于操縱閘閥和截止閥的開(kāi)啟、停止和關(guān)閉或控制節(jié)流閥的開(kāi)口位置及通過(guò)流量。液壓缸直接推拉驅(qū)動(dòng)式是將油缸置于閥門(mén)上方( 圖1) ，通過(guò)連接支架將閥門(mén)與油缸固定，由套、銷(xiāo)子將閥桿及油缸活塞桿連接。當(dāng)油缸活塞運(yùn)動(dòng)時(shí)帶動(dòng)閥桿運(yùn)動(dòng)完成閥門(mén)的開(kāi)啟、關(guān)閉、停止及閥門(mén)開(kāi)度的調(diào)節(jié)。液壓油缸可根據(jù)管路系統(tǒng)對(duì)閥門(mén)的要求，采用雙作用油缸( 包括單活塞桿和雙活塞桿油缸) 用油壓完成對(duì)閥門(mén)的啟閉和開(kāi)度調(diào)節(jié)。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="福建RH真空管道蝶閥材料" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129736101689453/4021167.png"></div></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/104166.html</p></div></div></div></div></div><div id="xmogn9d" class="page-right 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