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输送带固体颗粒的气体介质的管道上所用波纹管膨胀节的典型设计是有蒸汽保护措施的。然而这种结构容易产生应力腐蚀开裂。本文对取消蒸汽保护措施进行了初探.论述了取消蒸汽保护的理由.探讨了取消该措施的各种好处.简单介绍了对波纹管膨胀节设计、制造、安装的一些建议。一、波纹管膨胀节简介波纹管膨胀节比起“Π”型管道来,在更小的空间内能吸收管系中更大的热膨胀,同时也能承受系统压力,从而在炼油、化工、煤和核动力装置、低温装置以及加热和冷却系统等各种用途的管道上得到广泛应用。现在大多都采用波纹管膨胀节来吸收管系的热膨胀。另外,对于不同结构形式的各种复杂管
The typical design of the bellows expansion joint used on the pipe of the gas medium that conveys the solid particles is to have steam protection measures. However, this structure is prone to stress corrosion cracking. In this paper, the measures to cancel the steam protection are discussed, and the reasons for the elimination of the steam protection are discussed.The various benefits of canceling this measure are discussed.The design, manufacture and installation of the bellows expansion joint are briefly introduced. First, the bellows expansion joint Introduction Bellows expansion joint than the “Π” type of pipe, in a smaller space to absorb greater thermal expansion in the pipe system, but also can withstand system pressure, which in the oil refining, chemical, coal And nuclear power plants, cryogenic devices and heating and cooling systems and other uses of the pipeline is widely used. Now most of the bellows expansion joint to absorb the thermal expansion of the pipe. In addition, for a variety of different forms of complex tube