进口高性能双向压燃气蝶阀性能描述 Performance description

高性能双向压燃气蝶阀采用三偏心结构，即在普通金属硬密封双偏心蝶阀的基础上增加了一个角度偏心。这个角度偏心的主要作用是∶使阀门在开启或关闭动作的过程中，密封环与阀座之间的任意一点都会迅速脱开或接触，做到密封副之间真正的"无摩擦"，极大地延长了阀门的使用寿命RETZ The valve uses a three-cam structure, that means an angular cam is added to a common metal hard seal bi-cam butterfly valve. This angular cam functions; to have any point between the seal ring and the seat ring quickly separated off or contacted during the valve open or close action to leave a true "non-friction' between the seal pairs, greatly extending the valve life.

技术要求Applicable Standards

Design Code 设计标准:API 609 Catalog B & ASME B16.34

Face to face 结构长度:API 609 Category B, ANSI B16.10

ISO 5752 & BS EN 558 Series 3 / 13 / 14 / 19

DIN 3202 F4 / BS 515

Connection Standard 连接标准:NPS 2"~24" ASME B16.5

Above 24" ASME B16.47 A / B

Testing / Inspection 试验与检验:API 598

规格尺寸 Size : 2～40"

公称压力 Nominal pressure：PN10～160, CL150～900LB

适应温度 Applicable temperature ：-40～425℃

连接方式：对夹，法兰，凸耳，焊接 Connection mode: wafer, flange, lug, welding

进口高性能双向压燃气蝶阀偏心结构说明Triple eccentric structure

●偏心1∶阀杆旋转中心线与阀座中心线偏离一定距离，保证密封面的完整性；Eccentric 1: The centerline of rotation axis/stem and seat deviate from each other for a certain distance to ensure the integrity of the sealing surface;

●偏心2∶阀杆旋转中心线与阀体中心线偏离一定距离，降低阀门启闭时密封副之间的摩擦力 Eccentric 2: The centerline of rotation axis/stem and body deviate from each other for a certain distance to reduce the friction between the sealing components when open and close the valve.

●偏心 3∶阀体中心线与阀座圆锥密封面中心线偏离一定角度，使阀门开启或关闭时，蝶板密封环与阀座之间迅速脱离或接触，密封副之间无摩擦、无卡挤 Eccentric 3: The centerline of valve body and conical seat sealing face deviate from each other for a certain angle to ensure the sealing ring of the disc can be separated or touched with seat rapidly so that friction and squeeze will not exist between the sealing components.

产品主要特点Productmainfeatures

●阀门采用三偏心结构，即在普通金属硬密封双偏心蝶阀的基础上增加了一个角度偏心。这个角度偏心的主要作用是∶使阀门在开启或关闭动作的过程中，密封环与阀座之间的任意一点都会迅速脱开或接触，做到密封副之间真正的"无摩擦"，极大地延长了阀门的使用寿命retz品牌 The valve uses a three-cam structure, that means an angular cam is added to a common metal hard seal bi-cam butterfly valve. This angular cam functions; to have any point between the seal ring and the seat ring quickly separated off or contacted during the valve open or close action to leave a true "non-friction' between the seal pairs, greatly extending the valve life.

●径向动平衡密封系统，通过优化设计，蝶板的进出口两侧受力近似平衡，阀门达到进出口双向可靠的密封性能的同时，有效降低了阀门的开启力矩 The radial dynamic balance sealing system, through optimization design, the forces on both sides of the inlet and outlet of the butterfly plate are approximately balanced, the valve achieves two-way reliable sealing performance at the inlet and outlet, and effectively reduces the opening torque of the valve (about 2/3 of the ordinary butterfly valve)

●蝶板密封环由片状不锈钢和碳纤维材料复合而成，不锈钢片为主密封，碳纤维为辅助密封，这种双重密封结构，使阀门密封更可靠，密封泄漏等级可达ASME B16.104 VI级或ISO5208 A级；The seal ring of the butterfly plateis made up with sheet stainless steel and carbon fiber by way of compounding, with the stainless steel sheet as the primary seal and thecarbon fiber as the assisting one. This dual-sealing structure makes the valve more reliably sealed and the seal leaking grade up to ASME B16.104 VI or ISO5208A.

●碳纤维夹层材料与普通供热煤阀的橡胶石棉板、石墨等材质的夹层相比，具有更环保、更耐磨、更耐冲刷、更可靠等特点、可达20万次无故障启闭 Compared to the sandwich of the common heat supply butterfly valve made of rubber asbestos plate, graphite etc materials, that of the carbon fiber sandwich features more environmental protection, more 'wearable, more resisting to scouring and more reliable, up to 200,00 times of non-failure open-close.

●通过优化设计，使阀体具有高的强度，有效防止“负压”造成的阀体变形，保证阀门运行的安全和可靠性 RETZ By means of optimized design, the vvalve is made with a high strength toeffectively preven the body deformation caused by" negative pressure'and ensure the valve to safely and reliably work.

●填料涵设有真空轴向密封装置，采用柔性石墨、成型石墨、PTFE等填料组合和活载式填料，使填料密封系统始终保持稳定 The packing box is set with a vacuum axial sealing device and flexible graphite, formed graphite, PTFE etc. packing combination and live-loaded packing is used so as to have the sealing system of the packing kept stable all the time.

主要零部件材料 Main parts and materials