往复压缩机气阀介绍课件.ppt

1 Compressor Valves 气阀 Ranked #1 as primary cause of unscheduled shutdowns Some valve types / designs more tolerant than others of actual service conditions 2 Compressor Valves - Process Gas “Tolerance Rating”气阀-对工艺气忍耐度 Compressor Valve Type Ranking Magnum (PEEK 子弹头） Excellent顶好 Poppet 提动头(蘑菇状) Good 好 Concentric Ring (Plate) 环状 Good好 Ported Plate 片状带孔 Good好 Channel 槽式 Fair一般 3 Process Poppet Valve Features - Why it Works 菌状阀 Poppet element design - rigid  tough Spring design - lower stresses than plate style valves Streamlined gas flow - allows gas contaminants to pass through; reduces plugging Reconditioning - simple and easy; minimizes rebuilding assembly errors Caution - all poppet style valves are not equal! 4 Compressor Valve Technology: We’ve raised the standard把气阀技术再度提高 Objectives: To further improve the performance and reliability of compressor valves To combine ideal design features of various valve types into a single design Extend application of a single design to a wider range of speeds and pressures Offer at a lower cost than existing ring, plate or poppet style valves 5 Features: Rigid and tough (low mass) non-metallic sealing element for maximum impact resistance Minimal tensile loading in sealing elements Minimized fixed clearance Large (effective) flow area at minimum lift Available, low cost sealing element eases reconditioning and reduces inventory Can be used in conjunction with port, plug and finger type unloaders MagnumTM Compressor Valve子弹头 气阀 7 MagnumTM Compressor Valve Magnum Valve Experience: 1995 - Valve design first conceptualized 1996 - Development and prototype testing 1997 - First field installations Today: Operating in nearly 400 compressor cylinders worldwide 2 M.W. 71 35 Pd 4,000 psig 327 Speeds 1,000 rpm Approaching 1 million hours of operation 8 承受较大的晶间运动,但不影响其结构 可回弹至原位 可吸收较多的冲击能量 较低的强度和硬度 耐温高 类似金属，但晶间连接力低 9 重量轻 为金属阀片的六分之一,减少惯性力和冲击力及磨损, 使用寿命增加. 耐腐蚀 几乎所有种类的工艺气体,包括100% H2S和低于3%