例题
设计条件:Td=425℃,Pd=0.6MPaG,[Nc]=1000Cy,304钢
波纹管尺寸数据:Db=1100mm,w=65mm,q=60mm,t=1.2mm,n=3,Lt=40mm
设计计算结果:基于柱失稳的多容许波数Nmax=11,[e]=20mm,[ee]=10mm,[ec]=20mm
(1)轴向膨胀节
N=2:[x]=40mm,[xe]=20mm,[xc]=40mm
N=4:[x]=80mm,[xe]=40mm,[xc]=80mm
N=6:[x]=120mm,[xe]=60mm,[xc]=120mm
N=8:[x]=160mm,[xe]=80mm,[xc]=160mm
N=10:[x]=200mm,[xe]=100mm,[xc]=200mm
(2)角向膨胀节
N=2:[Θ]=2.0°
N=4:[Θ]=4.0°
N=6:[Θ]=6.0°
(3)横向膨胀节
N=3+3,Lc=500mm,[y]=29mm
N=3+3,Lc=1000mm,[y]=53mm
N=3+3,Lc=1500mm,[y]=78mm
N=3+3,Lc=2000mm,[y]=103mm
注:Lc为中接管长度。
(4)膨胀节
N=3+3,Lc=500mm,[x]=120mm,[xe]=60mm,[xc]=120mm,[y]=29mm
N=3+3,Lc=1000mm,[x]=120mm,[xe]=60mm,[xc]=120mm,[y]=53mm
N=3+3,Lc=1500mm,[x]=120mm,[xe]=60mm,[xc]=120mm,[y]=78mm
N=3+3,Lc=2000mm,[x]=120mm,[xe]=60mm,[xc]=120mm,[y]=103mm