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三偏心蝶閥介紹_三偏心蝶閥是什么
來源: | 發布時間:2018/9/8 21:12:59 | 瀏覽次數:

三偏心蝶閥從發明到現在已經有50多年的歷史了,在這50多年中,人們也在不斷地對三偏心蝶閥進行改良,這也使得三偏心蝶閥的應用領域變得更寬廣。原來三偏心蝶閥只用于水介質的截斷和聯通,三偏心的設計增強蝶閥的功能,已經成為工業工業管道設備中,關鍵工藝環境最惡劣的條件下性能卓越的閥門之一。


Three eccentric butterfly valve has a history of more than 50 years from the invention to now. In these 50 years, people have also been improving the three eccentric butterfly valves, which makes the application field of three eccentric butterfly valves more extensive. The original three eccentric butterfly valves are only used for the intercept and connection of water medium, and the three eccentric design strengthens the function of the butterfly valve. It has become one of the valves with excellent performance under the worst conditions of the key process environment.


三偏心蝶閥,正如其名稱所指,三個獨立的偏移被設計成了閥門。具體是指:


1)盤/閥座密封面的中心線,
2)軸相對于孔的中心線的位置;
3)從閥孔的中心線偏移的閥座錐角的軸線。

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這三個偏移的組合提供了一個錐形的密封面,最大限度地減少三偏心蝶閥閥座和密封件之間的磨損,提高三偏心蝶閥的使用壽命和密封性。此外,把優閥座面降低到最小,降低三偏心蝶閥的工作轉矩。



The three eccentric butterfly valve, as its name implies, three independent offsets are designed to be valves. Specifically, it refers to:

1) the center line of the sealing surface of the disc / seat.
2) the position of the axis of the axis relative to the hole;
3) the axis of the valve seat cone angle deviating from the center line of the valve hole.

The three offset combinations provide a conical seal face to minimize the wear between the three eccentric butterfly valve seats and the seals, and improve the life and sealing of the three eccentric butterfly valve. In addition, reduce the valve seat surface to the minimum and reduce the working torque of the three eccentric butterfly valve.


一般來說,由于三偏心蝶閥密封特性以及成本比其他金屬閥座閥門類型選擇更有優越性。由于結構緊湊,回轉的設計和輕質結構,可以安裝和操作方便,他們不需要管支撐。可更換的密封環,允許快速和簡單的維修和低扭矩(允許較小的驅動器)意味著更節省成本。

雙向零泄漏封閉的金屬座只有一次軟閥座閥門。這將極大地擴展應用的可能性。靈活的密封環和最佳的扭矩傳輸,這意味著這些閥門可以提供消防安全設計和密封性能,可以大于一般蝶閥設計的最大溫度范圍。 傳統上,可能會發現在眾多行業生成石油和天然氣加工、煉油、化工和石化廠、發電、海上平臺、供熱、造紙、鋼米爾斯、糖米爾斯、海水淡化、水處理和分配。他們在所有行業中的使用增加了嚴格的政府法規和更大的生產需求迫使用戶尋求解決方案。用量也節節攀升,已經存在了數十年,特點提供了許多好的解決方案,包括那些具有更大的挑戰。這些好處包括運營效率,耐磨料介質和化學品到一定的溫度或壓力,并在眾多的操作條件的多功能性。

Generally speaking, the three eccentric butterfly valve has better sealing performance and cost than other metal seated valve types. Because of its compact structure, the slewing design and lightweight structure are easy to install and operate, and they do not require tube support. The replaceable sealing ring allows for fast and simple maintenance and low torque (allowing smaller drives), which means more cost savings.

Two way zero leakage closed metal seat has only one soft seat valve. This will greatly expand the possibility of application. Flexible seal rings and optimal torque transmission, which means that these valves can provide fire safety design and sealing performance, which can be larger than the maximum temperature range of the general butterfly valve. Traditionally, oil and gas processing, oil refining, chemical and petrochemical plants, power generation, offshore platforms, heating, paper, steel Mills, sugar Mills, seawater desalination, water treatment and distribution may be found in a large number of industries. Their use in all industries has increased stringent government regulations and greater production demand, forcing users to seek solutions. Usage has also been climbing steadily for decades. The characteristics provide many good solutions, including those with greater challenges. These benefits include operational efficiency, wear-resistant materials and chemicals to a certain temperature or pressure, and versatile in many operating conditions.

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利用設計的特點,下一代設計提供的功能,進一步提高三偏心蝶閥的安全性和性能,-包括:

1、采用精密機加工的密封面和密封環形成金屬對金屬密封。即使在高溫高壓以及其他的嚴苛的服務環境,都可以做到雙向密封零泄漏。低摩擦和流線形的標準標準直角圓錐設計,金屬對金屬能很好的解決熱脹冷縮,是在高溫高壓環境服務的重要特征。金屬對金屬密封允許應用在有防火要求的油田中。
2、最佳的閥座密封面設計,閥座密封面采用在閥門本體上堆焊司太立硬質合金,使用密封面有更長的壽命和更好的耐磨性,即使反復循環使用。這種密封結構設計減少了和蝶板的摩擦,減少了工作扭矩。
3、特殊的閥座設計使用閥門可以自動調整閥門的密封。浮動的密封環和一個寬的密封環支撐墊片,使用密封性和啟閉更加可靠。這種閥座確保閥門有雙向密封特性。
4、閥門的設計的定位銷在蝶板很低的位置,允許在熱膨脹時都有良好的性能,最大程度的減小閥桿的擾度。因此,閥門有很長的使用壽命。


Using the design features, the functions of the next generation design will further improve the safety and performance of the three eccentric butterfly valves.

1, the use of precision machined sealing surface and sealing ring to form metal to metal seal. Even in high temperature and high pressure and other harsh service environment, two-way seal and zero leakage can be achieved. The standard right angle conical design of low friction and streamline shape, metal can solve heat expansion and contraction of metal well, and it is an important feature of high temperature and high pressure environment service. Metal to metal seals are allowed to be used in oil fields with fire protection requirements.
2. The best seat cover design. The seat sealing surface is used to weld the Stellite hard alloy on the valve body. The seal face has longer life and better wear resistance, even if repeated cycle is used. The design of the sealing structure reduces friction with the butterfly plate and reduces the working torque.
3. Special valve seat design uses valve to automatically adjust valve seal. The floating seal ring and a wide sealing ring support gasket are more reliable by using sealing and opening and closing. This seat ensures that the valve has a two-way sealing feature.
4. The location pin of the valve is located at the very low position of the butterfly plate, allowing good thermal expansion performance and minimizing the disturbance of the stem. Therefore, the valve has a long service life.


 
 
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