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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="pzrogfr" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</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>山東RH真空管道蝶閥哪家好</p><p><span>***更新：</span>2020-06-02 12:13:48</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="vpm3cpm" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">頂耕國際貿(mào)易（上海）有限公司</a></p><p><span>聯(lián)系人：</span>查劍來</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="dxumof8" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="8zmj77b" class="box"><p><p> 1、配管上的法蘭面與配管中心線的垂直度及法蘭螺栓孔的誤差應(yīng)在允許值的范圍內(nèi)。閥門和配管中心線要取得一致后，在進(jìn)行安裝。 2、在緊固螺栓時，要使用與螺母相匹配的扳手，當(dāng)使用油壓，風(fēng)動工具進(jìn)行緊固時，注意不要超過規(guī)定的力矩。 3、連接兩個法蘭時，首先要使法蘭密封面與墊片均勻壓緊，由此保證靠同等的螺栓應(yīng)力對法蘭進(jìn)行連接。 4、法蘭的緊固要避免用力不均，應(yīng)按照對稱、交義的方向順序旋緊。 5，山東RH真空管道蝶閥哪家好、法蘭安裝后，要確認(rèn)所有的螺栓螺母的緊固均勻。 6、螺栓和螺母的緊固，為了防止震動造成的松動，要使用墊圈。為了避免高溫時螺紋間的粘連，山東RH真空管道蝶閥哪家好，安裝時螺紋部位應(yīng)涂防粘劑。 7、用于300℃以上的高溫閥門，在溫度上升后，必須對法蘭連接螺栓、閥蓋緊固螺栓，山東RH真空管道蝶閥哪家好、壓力密封以及填料壓蓋螺栓再次旋緊。 8、低溫用閥門時在安裝時是處于大氣溫度的狀態(tài)下，由于形成溫差，法蘭、墊片、螺栓以及螺母等發(fā)生收縮，又由于這些零部件的材質(zhì)不相同 9、各自的線膨脹系數(shù)也不同，形成了非常容易泄漏的環(huán)境條件。從這種客觀情況出發(fā)，在大氣溫度下緊固螺栓時，必須采用考慮了低溫時各零部件收縮因素的力矩。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="山東RH真空管道蝶閥哪家好" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129749328144532/3165155.png"></div><p> 它擔(dān)任閥門密封直接接觸的面。那閥門密封材料都有哪些呢，我們知道閥門密封圈材料有金屬和非金屬兩大類。閥門密封材料是閥門密封的重要組成部分，它擔(dān)任閥門密封直接接觸的面。那閥門密封材料都有哪些呢，我們知道閥門密封圈材料有金屬和非金屬兩大類。下面就簡單介紹一下各類密封材料的使用條件，以及常用的閥門類型1合成橡膠合成橡膠的耐油、耐溫、耐腐蝕等綜合性能優(yōu)于天然橡膠。一般合成橡膠的使用溫度t≤150℃，天然橡膠t≤60℃，橡膠用于公稱壓力PN≤1MPa的截止閥、閘閥、隔膜閥、蝶閥、止回閥、夾管閥等閥門的密封。2尼龍尼龍具有摩擦系數(shù)小、耐腐蝕性好等特點(diǎn)。尼龍多用于溫度t≤90℃、公稱壓力PN≤32MPa的球閥、截止閥等。3聚四氟乙烯聚四氟乙烯多用于溫度t≤232℃、公稱壓力PN≤、閘閥、球閥等。4鑄鐵鑄鐵用于溫度t≤100℃、公稱壓力PN≤、煤氣和油類用的閘閥、截止閥、旋塞閥等。5巴氏合金巴氏合金用于溫度t-70~150℃、公稱壓力PN≤。6銅合金銅合金常用材料有6-6-3錫青銅和58-2-2錳黃銅等。銅合金耐磨性好，適用于溫度t≤200℃、公稱壓力PN≤，常用于閘閥、截止閥、止回閥、旋塞閥等。7鉻不銹鋼鉻不銹鋼常用牌號有2Cr13、3Cr13經(jīng)調(diào)質(zhì)處理，耐腐蝕性能好。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="山東RH真空管道蝶閥哪家好" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129749337275391/5992195.png"></div><p> 主要分類 </p> <p> 按驅(qū)動方式分 </p> <p> (1)電動蝶閥 </p> <p> (2)氣動蝶閥 </p> <p> (3)液動蝶閥 </p> <p> (4)手動蝶閥 </p> <p> 按結(jié)構(gòu)形式分： </p> <p> (1)中心密封蝶閥 </p> <p> (2)單偏心密封蝶閥 </p> <p> (3)雙偏心密封蝶閥 </p> <p> (4)三偏心密封蝶閥 </p> <p> 密封面材質(zhì)分： </p> <p> (1)軟密封蝶閥。 </p> <p> 1)密封副由非金屬軟質(zhì)材料對非金屬軟質(zhì)材料構(gòu)成。 </p> <p> 2)密封副由金屬硬質(zhì)材料對非金屬軟質(zhì)材料構(gòu)成。 </p> <p> (2)金屬硬密封蝶閥。密封副由金屬硬質(zhì)材料對金屬硬質(zhì)材料構(gòu)成。 </p> <p> 按工作壓力分： </p> <p> (1)真空蝶閥。工作壓力低于標(biāo)堆大氣壓的蝶閥。 </p> <p> (2)低壓蝶閥。公稱壓力PN<1．6MPa的蝶閥。 </p> <p> (3)中壓蝶閥。公稱壓力PN為2．5--6．4MPa的蝶閥。 </p> <p> (4)高壓蝶閥。公稱壓力PN為10.0--80．0MPa的蝶閥。 </p> <p> (5)超高壓蝶閥。公稱壓力PN>100MPa的蝶閥。 </p> <p> 按連接方式分： </p> <p> 1、對夾式蝶閥 </p> <p> 對夾式蝶閥的蝶板安裝于管道的直徑方向。閥門則呈全開狀態(tài)。 </p> <p> 對夾式蝶閥結(jié)構(gòu)簡單、體積小、重量輕。蝶閥有彈性密封和金屬密封兩種密封型式。彈性密封閥門，密封圈可以鑲嵌在閥體上或附在蝶板周邊。 </p> <p> 2、法蘭式蝶閥 </p> <p> 法蘭式蝶閥為垂直板式結(jié)構(gòu)，閥桿為整體式金屬硬密封閥門的密封圈 </p> <p> 為柔性石墨板與不銹鋼板復(fù)合式結(jié)構(gòu)，安裝在閥體上，蝶板密封面堆焊不銹鋼。軟密封閥門的密封圈為丁腈橡膠材質(zhì)，是安裝在蝶板上的。 </p> <p> 3、凸耳式蝶閥 </p> <p> 4、焊接式蝶閥 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="山東RH真空管道蝶閥哪家好" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737494296875/3009218.png"></div></p><br /><p>文章來源地址: 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