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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="mlc3auv" 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>安徽省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>龍子湖區(qū)電動閥門供應(yīng),閥門</p><p><span>***更新：</span>2020-11-13 01:04:58</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="o33rqh3" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">安徽金建建材有限公司</a></p><p><span>聯(lián)系人：</span>陳金城</p><p><span>郵箱: </span>83125714@qq.com</p><p><span>電話: </span>13956044283</p><p><span>傳真: </span>0552_3153188</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>0552-3153188</p><p><span>地址: </span>合肥市包河區(qū)南淝河路豐匯鋼材市場E2棟107-111號</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="sryqsub" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="oifxul8" class="box"><p><p> 把螺帽焊在閥體上，再配一個(gè)與螺帽相同規(guī)格的螺栓，在螺帽底部放置一塊橡膠墊或石棉墊，將螺栓頂部繞上生膠帶擰入螺帽內(nèi)，達(dá)到阻止泄漏的目的。對于泄漏介質(zhì)壓力高，泄漏量大的閥體，可用引流焊接法。首先用一塊鐵板，龍子湖區(qū)電動閥門供應(yīng)，中間開設(shè)一圓孔，把一個(gè)與圓孔相當(dāng)口徑的隔離閥焊接在鐵板的圓孔上，打開隔離閥，把鐵板中心孔對準(zhǔn)泄漏點(diǎn)貼合在閥體，讓泄漏介質(zhì)經(jīng)鐵板中心孔與隔離閥流出。如果貼合面不好，龍子湖區(qū)電動閥門供應(yīng)，可在貼合面放置橡膠或石棉墊，然后把鐵板周圍與閥體焊好，再關(guān)閉隔離閥就能達(dá)到重新密封的目的。b)在閥體的泄漏介質(zhì)高溫高壓，但是閥門有較大的外形尺寸、泄漏量不大的情況也可以用焊接的方法，首先直接把閥體上與漏點(diǎn)相關(guān)的縫隙都焊死（不焊漏點(diǎn)），然后用一段符合工況（工作溫度、壓力）的管子長度視現(xiàn)場環(huán)境而定（一般取200mm左右即可），龍子湖區(qū)電動閥門供應(yīng)，其直徑應(yīng)該大于漏點(diǎn)，把一臺與管子相適應(yīng)的閥門焊接在管子一端，并全開閥門，然后把管子另一端取對準(zhǔn)漏點(diǎn)焊接好后，關(guān)閉閥門即可止住泄漏.4．4***堵漏法不管是閥門哪一部分泄漏如果以上方法操作都有困難時(shí)也可以采用“包裹法”：使用符合工況的板材（管材）制作一個(gè)能包裹閥門整體或者是有漏點(diǎn)的閥體的箱體。溝槽閘閥它具有開關(guān)輕巧、密封可靠、彈性記憶佳及使用壽命長等***優(yōu)點(diǎn)。龍子湖區(qū)電動閥門供應(yīng)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="龍子湖區(qū)電動閥門供應(yīng),閥門" src="http://tyunfile.71360.com/UpLoadFile/JD011/2019/12/637132424399747664/6371324243997476642798271.jpg"></div><p> 但原理是相同的。水泵吸水管的吸水底閥是止回閥的變形,它的結(jié)構(gòu)與上述兩類止因閥相同,只是它的下端是開敞的,以便可使水進(jìn)入。7.減壓閥減壓閥是將介質(zhì)壓力降低到一定數(shù)值的自動閥門,一般閥后壓力要小于閥前壓力的50%。減壓閥種類很多,主要有活塞式和彈簧薄膜式兩種。活塞式減壓閥是通過活塞的作用進(jìn)行減壓的閥門。彈簧薄膜式減壓閥,是依靠彈簧和薄膜來進(jìn)行壓力平衡的。8.疏水閥疏水閥也叫阻汽排水閥、汽水閥、疏水器、回水盒、回水門等。它的作用是自動排泄不斷產(chǎn)生的凝結(jié)水,而不讓蒸汽出來。疏水閥種類很多,有浮筒式、浮球式、鐘形浮子式、脈沖式、熱動力式、熱膨脹式。常用的有浮筒式、鐘形浮子式和熱動力式。(1)浮筒式疏水閥，浮筒式疏水閥，主要有閥門、軸桿、導(dǎo)管、浮筒和外殼等構(gòu)件組成。當(dāng)設(shè)備或管道中的凝結(jié)水在蒸汽壓力推動下進(jìn)入疏水閥,逐漸增多至接近灌滿浮筒時(shí),由于浮筒的重量超過了浮力而向下沉落,使節(jié)流閥開啟。這樣使得筒內(nèi)的凝結(jié)水在蒸汽壓力的作用下經(jīng)導(dǎo)管和閥門排出。當(dāng)浮筒內(nèi)的凝結(jié)水接近排完時(shí),由于浮筒的重量減輕而向上浮起,使節(jié)流閥關(guān)閉,浮筒內(nèi)又開始積存凝結(jié)水。這樣周期性地工作,既可自動排出凝結(jié)水,又能阻止蒸汽外逸。。龍子湖區(qū)鑄鐵閥門供應(yīng)三“0”密封，閥桿采用三道0型環(huán)密封，摩擦阻力小，開關(guān)輕巧，不漏水。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="龍子湖區(qū)電動閥門供應(yīng),閥門" src="http://tyunfile.71360.com/UpLoadFile/2019/9/29/9/637053449887160859_JD011_5314243.jpg"></div><p> 為了防止儲罐出現(xiàn)超壓或負(fù)壓等失穩(wěn)狀態(tài)，工藝設(shè)計(jì)中通常采用在罐頂安裝呼吸閥的方式來維持儲罐氣壓平衡，確保儲罐在超壓或真空時(shí)免遭破壞，保護(hù)儲罐安全，并且減少儲罐內(nèi)物料的揮發(fā)和損耗，對安全和環(huán)保均起到一定的促進(jìn)作用。呼吸閥原理呼吸閥的內(nèi)部結(jié)構(gòu)實(shí)質(zhì)上是由一個(gè)壓力閥盤(即呼氣閥)和一個(gè)真空閥盤(即吸氣閥)組合而成的，壓力閥盤和真空閥盤既可并排布置，也可重疊布置。其工作原理：當(dāng)儲罐壓力和大氣壓力相等時(shí)，壓力閥和真空閥的閥盤和閥座緊密配合，閥座邊上密封結(jié)構(gòu)有“吸附”效應(yīng)，使閥座嚴(yán)密不漏。當(dāng)壓力或真空度增加時(shí)，閥盤開始開啟，由于在閥座邊上仍存在著“吸附”效應(yīng)，所以仍能保持良好的密封。當(dāng)罐內(nèi)壓力升高到定壓值時(shí)，將壓力閥打開，罐內(nèi)氣體通過呼氣閥(即壓力閥)側(cè)排入外界大氣中，此時(shí)真空閥由于受到罐內(nèi)正壓作用處于關(guān)閉狀態(tài)。反之，當(dāng)罐內(nèi)壓力下降到一定真空度時(shí)，真空閥由于大氣壓的正壓作用而打開，外界的氣體通過吸氣閥(即真空閥)側(cè)進(jìn)人罐內(nèi)，此時(shí)壓力閥處于關(guān)閉狀態(tài)。在任何時(shí)候，壓力閥和真空閥不能同時(shí)處于打開的狀態(tài)。當(dāng)罐內(nèi)壓力或真空度降到正常操作壓力狀態(tài)時(shí)，壓力閥和真空閥處于關(guān)閉狀態(tài)，停止呼氣或吸氣過程。</p><p> 切斷和節(jié)流都能用,流體阻力小,操作省力。蝶閥,可以做成很大口徑。能夠使用蝶閥的地方,比較好不要使閘閥,因?yàn)榈y比閘閥經(jīng)濟(jì),而且調(diào)節(jié)性好。目前,蝶閥在熱水管路得到***的使用。4.球閥球閥的工作原理是靠旋轉(zhuǎn)閥戀來使閥門暢通或閉塞。球閥開關(guān)輕便,體積小,可以做成很大口徑,密封可靠,結(jié)構(gòu)簡單,維修方便,密封面與球面常在閉合狀態(tài),不易被介質(zhì)沖蝕,在各行業(yè)得到***的應(yīng)用。球閥分兩類,一是浮動球式,二是固定球式。5.旋塞閥旋塞閥是依靠旋塞體繞閥體中心線旋轉(zhuǎn),以達(dá)到開啟與關(guān)閉的目的。它的作用是切斷、分田和改變介質(zhì)流向。結(jié)構(gòu)簡單,外形尺寸小,操作時(shí)只須旋轉(zhuǎn)90度,流體阻力也不大。其缺點(diǎn)是開關(guān)費(fèi)力,密封面容易磨損,高溫時(shí)容易卡住,不適宜于調(diào)節(jié)流量。旋塞閥,也叫旋塞、考克、轉(zhuǎn)心門。它的種類很多,有直通式、三通式和四通式。6.止回閥止回閥是依靠流體本身的力量自動啟閉的閥門,它的作用是阻止介質(zhì)倒流。它的名稱很多,如逆止閥、單向閥、單流門等。按結(jié)構(gòu)可分兩類。(1)升降式:閥瓣沿著閥體垂直中心線移動。這類止回閥有兩種:一種是臥式,裝于水平管道,閥體外形與截止閥相似,另一種是立式,裝于垂直管道,。(2)旋啟式:閥瓣圍繞座外的銷軸旋轉(zhuǎn),這類閥門有單瓣、雙瓣和多瓣之分。信號溝槽閘閥常應(yīng)用于自動噴水消防管理系統(tǒng)，來監(jiān)控供水管路，可以再遠(yuǎn)處指示閥門開度。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="龍子湖區(qū)電動閥門供應(yīng),閥門" src="http://tyunfile.71360.com/UpLoadFile/JD011/2019/12/637132424239455065/6371324242394550653623610.png"></div><p> 有些情況下水錘的發(fā)生遠(yuǎn)在止回閥的數(shù)公里以外，“止回閥調(diào)整法”就顯得無所適從；第三，考慮其它的方法，可以使得我們將問題簡單化，讓我們在黑暗中眼前一亮。所得到的解就更加有把握，系統(tǒng)會更安全。JHMj4Zkp4H"*.l二．“緩閉”的定義DdFVOs|在談?wù)撝够亻y的作用時(shí)，我們往往會觸及緩閉這個(gè)詞匯。之所以提出它來是因?yàn)樗坪踹@個(gè)詞已經(jīng)完全被商業(yè)化了。使得真正的理論在技術(shù)討論當(dāng)中出現(xiàn)了中斷。何為緩閉？如何定義緩閉？我們應(yīng)該知道這個(gè)詞并不是商家給下的定義，其真正的來源正是出自搞工程的工程師們。在研究水錘當(dāng)中我們國內(nèi)有一個(gè)名詞叫“水錘相”，而在國外稱做“臨界時(shí)間”，這是一個(gè)十分重要的，但卻不太引起注意的一個(gè)名詞。水錘相的定義為：T=2L/Cp4el9O&0umfC其中：Lv5AtZl}T為水錘相或臨界時(shí)間gxLA1]>{L為管道長度@%jzVF7C為相應(yīng)于管線的壓力波速8>epKFEg顯然水錘相是指產(chǎn)生水錘波傳出去并***次傳回來的時(shí)間。理論上，當(dāng)止回閥關(guān)閉時(shí)間大于T，便稱之為緩閉；反之稱為速閉。這就意味著緩閉與非緩閉是針對系統(tǒng)而言，并不根據(jù)人們的喜好或者定義。因此，在很長的管道系統(tǒng)當(dāng)中，例如水錘波需要5分鐘才可以***次返回時(shí)。平底閥座：底部采用與水管相同的平底式閥座設(shè)計(jì)，不產(chǎn)生雜物淤積，密封更可靠。蚌山區(qū)不銹鋼閥門供應(yīng)</p><p style="text-indent:25px">耐腐蝕：內(nèi)腔采用***環(huán)氧樹脂涂裝，防止腐蝕和生銹，不但可供生飲，而且可用污水系統(tǒng)。龍子湖區(qū)電動閥門供應(yīng)</p><p> 為防止單臺呼吸閥因故障導(dǎo)致儲罐出現(xiàn)超壓或負(fù)壓的風(fēng)險(xiǎn)，此時(shí)可以安裝兩臺呼吸閥。為避免兩臺呼吸閥同時(shí)動作而增加故障的幾率，工藝設(shè)計(jì)時(shí)，通常將此兩臺呼吸閥的吸入和排出壓力梯度設(shè)計(jì)，正常情況下一臺工作，另一臺備用。(3)如果呼吸量較大，導(dǎo)致單個(gè)呼吸閥的呼吸量不能滿足要求時(shí)，可設(shè)置兩個(gè)以上呼吸閥。當(dāng)安裝兩個(gè)呼吸閥時(shí)，它們與罐頂?shù)闹行木嚯x應(yīng)相等，即在罐頂對稱布置。(4)如果呼吸閥安裝在氮封儲罐上，則氮?dú)夤夤艿慕庸芪恢靡欢ㄒh(yuǎn)離呼吸閥接口，并由罐頂部插入儲罐內(nèi)約200mm，這樣氮?dú)膺M(jìn)罐后不直接排出，起到氮封作用。(5)如果呼吸閥內(nèi)帶有阻火器，必須考慮阻火器的壓降對呼吸閥排出壓力的影響，以免儲罐超壓。(6)當(dāng)建罐地區(qū)歷年**冷月份溫度的平均值低于或等于0時(shí)，呼吸閥必須有防凍措施，以防止呼吸閥閥盤凍住或阻塞導(dǎo)致儲罐排氣不暢或補(bǔ)氣不足，而導(dǎo)致儲罐超壓鼓罐或低壓癟罐。龍子湖區(qū)電動閥門供應(yīng)</p><p 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