进口气动硬密封蝶阀 法兰 对夹 气动不锈钢蝶阀 美国RETZ瑞茨

　　品牌：RETZ瑞茨/我们一直致力于流体控制和测控领域的持续创新，始于2005……

　　(法兰，对夹)气动硬密封蝶阀采用三偏心多层次金属密封结构,无机械磨损，可达到零泄漏，有优良的双向密封功能,是用于石油、化工、冶金、电力、食品、医药、给排水、气体输送等不同介质的管路上作调节流量、截断或接通流体的理想装置Theimported pneumatic hard sealing butterfly valve (flange, clamp) adopts a threeeccentric multi-level metal sealing structure, without mechanical wear, canachieve zero leakage, and has excellent bidirectional sealing function. It isthe best device for regulating flow, cutting off or connecting fluids onpipelines with different media such as petroleum, chemical, metallurgy, power,food, medicine, water supply and drainage, and gas transportation

　　进口气动硬密封蝶阀产品详情Product details

　　(法兰，对夹)气动硬密封蝶阀采用三偏心原理结构，阀座与碟板在启闭时几乎无摩擦，密封是采用软硬金属片层叠组成，具有金属密封和弹性密封的双重优点，无论在低温和高温情况下，均具有优良的密封特性 RETZ(Flange, wafer) The imported pneumatic hard seal butterfly valve adopts thethree eccentric principle structure. The valve seat and disc plate almost haveno friction when opening and closing. The seal is composed of soft and hardmetal sheets, which has the dual advantages of metal seal and elastic seal. Ithas excellent sealing characteristics no matter in low temperature or hightemperature

　　进口气动硬密封蝶阀结构特点Structural characteristics

　　三偏心结构：阀杆轴线与蝶板密封面间偏置一个尺寸A，并与阀体通道轴线偏置一个尺寸B，阀座回转轴线与阀体通道轴线形成一个偏心角α，故形成三偏心。蝶阀从0°～90°开启时，蝶板密封面会在开启的瞬间立即脱离阀座密封面，在其90°～0°关闭时，只有在关闭的瞬间，其蝶板圆锥形密封面才会接触并压紧阀座圆锥形密封。所以阀座与蝶板上的密封面之间无任何摩擦，去除了磨损和泄漏的可能性 Threeeccentric structure: one dimension A is offset between the valve stem axis andthe sealing surface of the butterfly plate, and one dimension B is offset fromthe valve body passage axis. The rotation axis of the valve seat forms aneccentric angle with the valve body passage axis α， Therefore, threeeccentricities are formed. When the butterfly valve is opened from 0 ° to 90 °,the sealing surface of the butterfly plate will immediately disengage from thesealing surface of the valve seat at the moment of opening. When the butterflyvalve is closed from 90 ° to 0 °, the conical sealing surface of the butterflyplate will contact and compress the conical sealing surface of the valve seatonly at the moment of closing. Therefore, there is no friction between thevalve seat and the sealing surface on the butterfly plate, eliminating thepossibility of wear and leakage.

　　扭矩密封：三偏心的结构使蝶阀关闭时，其密封副两密封面之间的密封比压由外加于阀杆的驱动力矩产生。不仅消除了常规弹性进口气动硬密封蝶阀3.jpg阀座弹性材料老化、冷流失效等因素造成的密封比压降低和消失，而且可以通过外加驱动力矩的改变，实现对其密封比压的任意调整，从而使三偏心蝶阀的密封性能改善，蝶阀的使用寿命也大大提高Torque sealing: when the butterfly valve is closed due to the tri eccentricstructure, the sealing specific pressure between the two sealing surfaces ofthe sealing pair is generated by the driving torque applied to the valve stem.It not only eliminates the reduction and disappearance of sealing specificpressure caused by aging of elastic materials, cold flow, elastic failure and otherfactors of conventional elastic valve seats, but also realizes the arbitraryadjustment of sealing specific pressure through the change of external drivingtorque, thus improving the sealing performance of triple eccentric butterflyvalves and greatly increasing the service life of butterfly valves.

　　软硬层叠式金属密封结构：蝶板密封圈采用软硬层叠式不锈钢片和柔性石墨板的密封面，使其具有金属硬密封和弹性密封的双重优点，无论在低温和高温工况下均具有优良的密封性能 Softand hard laminated metal sealing structure: the butterfly plate sealing ringadopts the sealing surface of soft and hard laminated stainless steel sheet andflexible graphite plate, which makes it have the dual advantages of metal hardsealing and elastic sealing, and has excellent sealing performance no matterunder low temperature or high temperature conditions

　　双向密封：因密封面锥角小于密封材料的磨擦角，蝶板关到密封位置时立即实现自锁，并能承受一定的反向压力冲击 Twoway sealing: since the cone angle of the sealing face is less than the frictionangle of the sealing material, the butterfly plate will automatically lock whenit is closed to the sealing position and can withstand a certain reversepressure impact

　　防火结构：全金属结构本身具有火灾安全的特性Fireproof structure: the all metal structure itself has the characteristics offire safety

　　密封圈：密封圈由压板夹在蝶板上，易于安装、调节和更换Sealing ring: the sealing ring is clamped on the butterfly plate by pressingplate, which is easy to install, adjust and replace

　　阀杆的上、下部位装有轴套，防止磨损和粘连，提高了使用寿命 Theupper and lower parts of the valve stem are equipped with shaft sleeves toprevent wear and adhesion and improve the service life

　　进口气动硬密封蝶阀技术参数TechnicalParameters

　　公称通径DN(mm):DN50～1000mm

　　公称压力(MPa):PN1.0-10MPa

　　连接形式:法兰式、对夹式、凸耳式

　　阀芯形式:三偏心金属硬密封

　　阀体材质：碳钢、不锈钢304、不锈钢316

　　温度范围：碳钢：-20℃～350℃ 不锈钢：-40℃～500℃

　　基本误差:带：小于全行程的±2%

　　回差:带：小于全行程的±2%

　　驱动方式：气源驱动,压缩空气4～7bar(可带手轮)

　　动作范围：0～90°

　　控制方式：开关模式(开关两位控制,气开、气关式)、智能调节型 弹簧复位