雙向高溫高壓硬密封高性能蝶閥是實現了蝶板密封圈與閥座密封面之間的無滑動磨擦·卡擠，密封面上的壓力角大于磨擦角，采用了“徑向動平衡密封系”設計，是蝶板開啟阻力極低。啟閉過程中蝶板密封面沿360°圓周各點可以瞬間快速完成，逐點接觸和逐點脫離。開啟密封即可分離，快速準確實現關閉接觸自動相吻合的密封動作。 調節型多層次·全金屬硬密封蝶閥由于密封面采用多重密封和整體全金屬密封，經過高精度機械加工成橢圓形截面密封環，它與閥座金屬密封面組成密封副。這種密封結構，在高壓工況下不產生塑性變形，在高溫或低溫工況下，不存在沖壓應力、焊接應力、彈性退火或咬壞脆裂現象，徹底解決了傳統蝶閥密封結構不合理引起泄漏的弊病、大大提高了閥門密封可靠性。我們設計的整體全金屬密封型式在400℃~850℃超高溫工況下、在產生強力水刀的工況下，優點就異常突出，不變形，密封面不被割切，同樣保持良好的密封。經實驗測定調節型硬密封蝶閥開啟扭矩為傳統結構蝶閥的1/3左右，使用壽命是傳統硬密封蝶閥的5~8倍。

The bidirectional high temperature and high pressure hard sealed high-performance butterfly valve achieves non sliding friction and jamming between the butterfly plate sealing ring and the valve seat sealing surface. The pressure angle on the sealing surface is greater than the friction angle, and adopts a "radial dynamic balance sealing system" design, which makes the butterfly plate opening resistance extremely low. During the opening and closing process, the sealing surface of the butterfly plate can be quickly and instantly completed at various points along the 360 ° circumference, with point by point contact and point by point detachment. By opening the seal, it can be separated and quickly and accurately achieve the sealing action of automatically matching the closing contact. The adjustable multi-level all metal hard sealing butterfly valve adopts multiple seals and integral all metal seals on the sealing surface, and is processed into an elliptical cross-section sealing ring through high-precision mechanical processing. It forms a sealing pair with the metal sealing surface of the valve seat. This sealing structure does not produce plastic deformation under high pressure conditions, and there is no stamping stress, welding stress, elastic annealing, or brittle cracking phenomenon under high or low temperature conditions. It completely solves the problem of leakage caused by the unreasonable sealing structure of traditional butterfly valves and greatly improves the reliability of valve sealing. The overall all metal sealing type we designed has outstanding advantages in ultra-high temperature conditions ranging from 400 ℃ to 850 ℃, as well as in conditions that generate strong water knives. It does not deform, and the sealing surface is not cut, maintaining good sealing. According to experimental measurements, the opening torque of the adjustable hard sealed butterfly valve is about one-third of that of traditional structural butterfly valves, and its service life is 5-8 times that of traditional hard sealed butterfly valves.

雙向高溫高壓硬密封蝶閥適用范圍：

Applicable scope of bidirectional high-temperature and high-pressure hard sealed butterfly valves:

雙向高溫高壓硬密封蝶閥適用于高、中、低壓，高溫、低溫的管路中作閉路密封裝置、節流裝置和調節裝置。廣泛適用于石油、化工、冶金、礦山、電力、能源、交通、農田、水力、環保、建筑、醫藥、生物等行業。特別適用密封性要求較嚴格的工況，如煤氣管道上，也適用水、蒸氣、油品、空氣、塵氣、硝酸等腐蝕性介質。 使用溫度-196℃~850℃，工作壓力PN0.6--10Mpa或150—160磅級。本閥完全可以取代笨重，價格高的閘閥、截止閥、球閥、節流閥，并作為以國代進產品。

Double directional high temperature and high pressure hard sealed butterfly valves are suitable for use as closed circuit sealing devices, throttling devices, and regulating devices in high, medium, and low pressure, high temperature, and low temperature pipelines. Widely applicable to industries such as petroleum, chemical, metallurgy, mining, electricity, energy, transportation, farmland, hydropower, environmental protection, construction, medicine, biology, etc. Especially suitable for working conditions with strict sealing requirements, such as gas pipelines, and also suitable for corrosive media such as water, steam, oil, air, dust, nitric acid, etc. The operating temperature is -196 ℃~850 ℃, and the working pressure is PN0.6-10Mpa or 150-160 pounds. This valve can completely replace bulky and expensive gate valves, globe valves, ball valves, and throttle valves, and is a domestically imported product.

雙向高溫高壓硬密封蝶閥適用標準：

Applicable standards for bidirectional high-temperature and high-pressure hard sealed butterfly valves:

GB標準蝶閥設計制造驗收按GB12238-89；JB/T8527-1997的規定。結構長度按GB12221-89的規定，雙法蘭連接按短系列制造，對夾式連接DN40~65、DN1400~2000按長系列，DN80~600按中系列，DN700~1200按短系列制造，（其中≥4.0Mpa引用MSS SP-68標準）。對焊式按法蘭長系列。法蘭連接尺寸按GB/T9113.1-2000、GB/T9113.2-2000標準及GB9113.8-1988標準。閥門檢驗與試驗按GB/T13927的規定。 美標磅級蝶閥執行標準： 設計制造驗收按API609凸耳和平板式蝶閥的規定。

The design, manufacturing, and acceptance of GB standard butterfly valves shall be in accordance with GB12238-89; According to JB/T8527-1997. The structural length shall be in accordance with the provisions of GB12221-89. Double flange connections shall be manufactured in the short series, while clamp type connections DN40~65, DN1400~2000 shall be manufactured in the long series, DN80~600 shall be manufactured in the medium series, and DN700~1200 shall be manufactured in the short series (with MSS SP-68 standard referenced for ≥ 4.0Mpa). Butt welding according to flange length series. The flange connection dimensions shall be in accordance with GB/T9113.1-2000, GB/T9113.2-2000 standards, and GB9113.8-1988 standards. Valve inspection and testing shall comply with the provisions of GB/T13927. Execution standard for American pound butterfly valves: Design, manufacturing, and acceptance shall be in accordance with the provisions of API609 Lug and Flat Butterfly Valves.

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