双向高温高压硬密封高性能蝶阀是实现了蝶板密封圈与阀座密封面之间的无滑动磨擦·卡挤，密封面上的压力角大于磨擦角，采用了“径向动平衡密封系”设计，是蝶板开启阻力极低。启闭过程中蝶板密封面沿360°圆周各点可以瞬间快速完成，逐点接触和逐点脱离。开启密封即可分离，快速准确实现关闭接触自动相吻合的密封动作。 调节型多层次·全金属硬密封蝶阀由于密封面采用多重密封和整体全金属密封，经过高精度机械加工成椭圆形截面密封环，它与阀座金属密封面组成密封副。这种密封结构，在高压工况下不产生塑性变形，在高温或低温工况下，不存在冲压应力、焊接应力、弹性退火或咬坏脆裂现象，彻底解决了传统蝶阀密封结构不合理引起泄漏的弊病、大大提高了阀门密封可靠性。我们设计的整体全金属密封型式在400℃~850℃超高温工况下、在产生强力水刀的工况下，优点就异常突出，不变形，密封面不被割切，同样保持良好的密封。经实验测定调节型硬密封蝶阀开启扭矩为传统结构蝶阀的1/3左右，使用寿命是传统硬密封蝶阀的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.

双向高温高压硬密封蝶阀适用范围：

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

双向高温高压硬密封蝶阀适用于高、中、低压，高温、低温的管路中作闭路密封装置、节流装置和调节装置。广泛适用于石油、化工、冶金、矿山、电力、能源、交通、农田、水力、环保、建筑、医药、生物等行业。特别适用密封性要求较严格的工况，如煤气管道上，也适用水、蒸气、油品、空气、尘气、硝酸等腐蚀性介质。 使用温度-196℃~850℃，工作压力PN0.6--10Mpa或150—160磅级。本阀完全可以取代笨重，价格高的闸阀、截止阀、球阀、节流阀，并作为以国代进产品。

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.

双向高温高压硬密封蝶阀适用标准：

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

GB标准蝶阀设计制造验收按GB12238-89；JB/T8527-1997的规定。结构长度按GB12221-89的规定，双法兰连接按短系列制造，对夹式连接DN40~65、DN1400~2000按长系列，DN80~600按中系列，DN700~1200按短系列制造，（其中≥4.0Mpa引用MSS SP-68标准）。对焊式按法兰长系列。法兰连接尺寸按GB/T9113.1-2000、GB/T9113.2-2000标准及GB9113.8-1988标准。阀门检验与试验按GB/T13927的规定。 美标磅级蝶阀执行标准： 设计制造验收按API609凸耳和平板式蝶阀的规定。

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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