進(jìn)口大口徑高溫高壓閘閥,(德國OLES閥門品牌)
【進(jìn)口大口徑高溫高壓閘閥】詳細(xì)說明：
閘閥有三種閥蓋設(shè)計(jì)形式.*種是螺栓式閥蓋,按這種設(shè)計(jì)形式設(shè)計(jì)的閥門,其閥體與閥蓋用螺栓螺母連接,纏繞式墊片(316夾柔性石墨制造)/金屬密封環(huán)(中高壓時使用)密封.客戶有特殊要求時也可采用金屬環(huán)連接.第二種設(shè)計(jì)形式是焊接式閥蓋,按這種設(shè)計(jì)形式的閥門,其閥體與閥蓋用螺紋連接,全焊密封.客戶有特殊要求時也可采用透焊連接.第三種是自密封閥蓋,按這種設(shè)計(jì)形式設(shè)計(jì)的閥門,其閥體與閥蓋用螺紋連接,內(nèi)壓自密環(huán)密封.
壓力自密封閘閥是利用介質(zhì)本身的壓力來達(dá)到密封的目的，壓力愈大，產(chǎn)生的密封力亦愈大，密封亦就愈可靠。閥蓋的外徑上具有光滑錐面，錐面上緊貼著自緊密封圈，密封圈的外徑與閥體緊貼。壓力自密封應(yīng)有足夠的預(yù)緊力，以便當(dāng)閥內(nèi)壓力不高時，亦能達(dá)到密封。這個預(yù)緊力可由擰緊支承壓蓋的螺紋來產(chǎn)生，亦可采用幾個螺栓的結(jié)構(gòu)。
Gate valves have three design forms of bonnet. The first is bolted bonnet. The valve body and bonnet are connected by bolts and nuts, the winding gasket (316 clamps of flexible graphite) and the metal sealing ring (medium and high pressure) are sealed. The customer can also use the metal ring connection when he has special requirements. The second design form is bolt-nut connection. Welded bonnet, according to this design form of valve, its body and bonnet are connected by threads and sealed by full welding. Customers can also use through welding connection when they have special requirements. The third kind is self-sealing bonnet, which is designed according to this design form of valve, its body and bonnet are connected by threads, and the inner pressure self-sealing ring is sealed.
The pressure self-sealing gate valve uses the pressure of the medium itself to achieve the purpose of sealing. The greater the pressure is, the greater the sealing force is, and the more reliable the sealing is. The outer diameter of the valve cover has a smooth conical surface, and the conical surface is close to the self-compacting sealing ring. The outer diameter of the sealing ring is close to the valve body. Pressure self-sealing should have sufficient pre-tightening force, so that when the pressure inside the valve is not high, the sealing can also be achieved. This pre-tightening force can be generated by tightening the threads of the supporting cover or by using several bolts.
【進(jìn)口大口徑高溫高壓閘閥】設(shè)計(jì)特點(diǎn)：
長螺紋閥桿螺母提供了長的螺紋壽命，并允許在全開的位置時拆掉手輪。
強(qiáng)力柔性石墨墊片用于150lb閘閥，金屬纏繞墊用于300lb閘閥，金屬墊片用于600lb及以上的閘閥。
閥體內(nèi)部的整體導(dǎo)軌能夠確保閘板在開關(guān)的任何位置都保持對中。
彈性楔型閘板能夠?qū)ψΡ砻媸д婧凸艿缿?yīng)力引起的閥體變形進(jìn)行補(bǔ)償。
防吹出閥桿設(shè)計(jì)具有一個錐形的上密封面，在閥門全開時，它與閥蓋上密封座靠緊。
閥桿與閘板連接強(qiáng)度超過閥桿螺紋根部的強(qiáng)度。
堆焊6號鈷基的閥座圈采用密封焊安裝，也可按照客戶要求采用螺紋閥座圈。
【進(jìn)口大口徑高溫高壓閘閥】優(yōu)點(diǎn)：
1 、進(jìn)口高溫高壓閘閥中腔采用壓力自緊式密封結(jié)構(gòu)，內(nèi)腔壓力越高密封性能越好，支管兩端為焊接連接，適應(yīng)不同的接管要求。 2 、閘板和閥座的密封面采用司太立鈷基硬質(zhì)合金堆焊而成，運(yùn)動密封硬度高，耐磨、耐高溫、耐腐蝕、抗擦傷性能好，使用壽命長。 3 、閥桿經(jīng)調(diào)質(zhì)和表面氮化處理，有良好的抗腐蝕性和抗擦傷性。 4 、電動閥門的開啟和關(guān)閉由電動裝置來控制，電動裝置分別配有電機(jī)、減速器、轉(zhuǎn)矩控制機(jī)構(gòu)，現(xiàn)場操作機(jī)構(gòu)，手、電動切換機(jī)構(gòu)。除就地操作外，還可進(jìn)行遠(yuǎn)距離操作。
進(jìn)口高溫高壓閘閥工作原理 ：
1 、采用壓力自緊式密封結(jié)構(gòu)，彈性閘板，兩端支管為焊接連。 2 、閥座密封面采用鈷基硬質(zhì)合金等離子噴焊而成，耐磨、抗擦傷性能好。 閥瓣密封面經(jīng)硬化氮化處理。 3 、閥桿表面經(jīng)抗蝕性氮化處理，有良好的抗腐蝕和抗擦傷性。 4 、閥門的開啟和關(guān)閉由電動裝置來控制，電動裝置分別配有電機(jī)，減速器、轉(zhuǎn)矩控制機(jī)構(gòu)、現(xiàn)場操作機(jī)構(gòu)、手、電動切換機(jī)構(gòu)，除就地操作外還可進(jìn)行遠(yuǎn)距離操作
