進口防爆電動三通法蘭球閥
進口防爆電動三通法蘭球閥特點基本信息Basic information on the characteristics of imported explosion-proof electric three - way flange ball valve
適用于管道壓差大，密封要求嚴(yán)格的開關(guān)和切斷管道介質(zhì)的工藝場合和流體控制系統(tǒng)。
工作溫度: -20℃ 至+150℃ (+250℃ 特殊密封).
工作壓力: PN16, PN25 - PN40 - PN64 -PN100范圍
空氣、蒸汽、水、氣體、石油和石化產(chǎn)品、腐蝕性介質(zhì)。
電動球閥;，V型電動球閥是一種芯閥座采用金屬，或金屬對聚四氟乙烯密封配合的旋轉(zhuǎn)球閥，電動球閥將球閥和蝶閥的*控制特性結(jié)合成一體,既可用作控制調(diào)節(jié)閥，又可作關(guān)斷切斷閥。其主要特點是:It is suitable for the large pressure difference of pipeline, the strict sealing of the switch and the process of cutting the medium of the pipe and the fluid system.
temperature: -20 C to +150 C (+250 C special seal).
pressure: PN16, PN25 - PN40 - PN64 -PN100 range
Air, steam, water, gas, petroleum and petrochemical products, corrosive medium.
The electric ball valve; Shanghai V electric valve and ball valve, a valve seat with metal core, rotating ball valve or metal of PTFE sealing, the best characteristics of electric ball valve and butterfly valve are combined into a whole, can be used as a valve, but also can be used as a cut off valve. Its main features are:
(1)不帶任何管接頭的整體式閥體，因此不受管道或螺栓應(yīng)力影響，并且由于閥體無任何管接頭，故耐壓殼體不會受壓力"突變"的影響;
(2)電動球閥具有一個V型閥體，即使在小流量或高粘度介質(zhì)的情況下，也可在整個量程范圍內(nèi)，保證控制的精確性;
(3)電動球閥防漏耐用的閥座在其外徑處襯有帶不銹鋼內(nèi)芯PTFE杯形或是O型密封圈，閥座用截面較大的鎢鈷硬質(zhì)合金制成，通過一個合金的波紋彈簧進一步增強了閥座的結(jié)構(gòu);
(4)當(dāng)電動球閥閥門關(guān)閉時，V型缺口與電動球閥閥座之間產(chǎn)生楔形剪切作用，并既具有自潔功能又可防止球芯卡死，電動球閥特別適用于管線結(jié)垢凍結(jié)或含有纖維和顆粒固體場合。(1) the integral valve body without any pipe joints is not affected by the stress of pipes or bolts, and because the valve body has no joints, the pressure hull will not be affected by the sudden change of pressure.
(2) the electric ball valve has a V valve body. Even in the case of small flow or high viscosity medium, the precision of the can be ensured within the range of the whole range.
(3) the leakage proof and durable valve seat of the electric ball valve is lined with stainless steel inner core PTFE cup or O type seal ring at its outer diameter. The valve seat is made of tungsten cobalt hard alloy with larger cross section, and the structure of the valve seat is further enhanced through the corrugated spring of an alloy.
(4) when the electric ball valve is closed, wedge-shaped shearing effect between the V notch and the electric ball valve seat is achieved, and it has both self-cleaning function and preventing the core stuck. The electric ball valve is especially suitable for pipeline scaling, freezing or containing fiber and granular solid occasions.
流體范圍
空氣、蒸汽、水、氣體、石油和石化產(chǎn)品、腐蝕性、若酸堿介質(zhì)。安裝檢查
1、安裝完畢后，啟動球閥開、關(guān)數(shù)次，應(yīng)該動作靈活，受力均勻，球閥工作正常。
2、根據(jù)管道壓力設(shè)計要求，通壓后檢測球閥與管道法蘭結(jié)合面的密封性能。常見故障
類型:電動球閥典型的故障，安全閥門，閥桿之間的彈簧和一個安裝在驅(qū)動器的行為在其門閥門往復(fù)敦促大門之一的地位，這可能是封閉的身體，控制流體應(yīng)用于活塞在干在執(zhí)行機構(gòu)克服彈簧力，從而維持在其它位置通常在開，所以作為控制條件下*維持，當(dāng)這種結(jié)構(gòu)閥棄置在大深度，和身體的壓力大大低于周圍海面壓力下降，電動球閥彈簧必須足夠大，關(guān)閉閥門的力量由于身體的壓力作用就干不足夠移動門其失敗的位置。在情況下可能發(fā)生。從而減少了執(zhí)行機構(gòu)的規(guī)模增加了閥門的深度評級。
工作原理
電動球閥它具有旋轉(zhuǎn)90度的動作，旋塞體為球體，有圓形通孔或通道通過其軸線。球閥在管路中主要用來做 電動球閥切斷、分配和改變介質(zhì)的流動方向，它只需要用旋轉(zhuǎn)90度的操作和很小的轉(zhuǎn)動力矩就能關(guān)閉嚴(yán)密。球閥zui適宜做開關(guān)、切斷閥使用，發(fā)展已將球閥設(shè)計成使它具有節(jié)流和控制流量之用，如V型球閥。電動球閥的主要特點是本身結(jié)構(gòu)緊湊，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，易于操作和維修，適用于水、溶劑、酸和天然氣等一般工作介質(zhì)，而且還適用于工作條件惡劣的介質(zhì)，如氧氣、過氧化氫、甲烷和乙烯等，在各行業(yè)得到廣泛的應(yīng)用。球閥閥體可以是整體的，也可以是組合式的。
