波齿垫的失效及其防护技术
发布时间：2018-11-20 20:25
【摘要】：为了强化垫片结构尺寸在高压大直径法兰螺栓密封防护设计中的主导性,通过波齿垫的5起失效案例和金属垫片安装问题的4个案例分析,指出了垫片宽度存在基于密封面尺寸相对宽或窄的概念,及其对垫片安装的影响,提出了相应的垫片宽度设计技术对策和制造技术要求,建议对设备大直径法兰密封面的平面度提出公差要求,相应增加垫片厚度,以便提高密封可靠性。分析了因波齿垫内外径侧的半波齿所损失的垫片宽度,建议相关标准就波齿垫的基本密封宽度的计算给出指引,以便于工程应用。
[Abstract]:In order to strengthen the leading role of gasket structure size in the sealing protection design of high-pressure and large-diameter flange bolts, five failure cases and four case studies of metal gasket installation were carried out. It is pointed out that the gasket width is based on the relative wide or narrow size of sealing surface and its influence on the installation of gasket. The corresponding technical countermeasures of gasket width design and manufacturing technical requirements are put forward. It is suggested that the flatness of large diameter flange sealing face of equipment should be increased and the thickness of gasket should be increased accordingly in order to improve the reliability of seal. This paper analyzes the width of gasket lost by the half wave tooth of the inner and outer diameter side of the wave-tooth pad, and suggests that the relevant standards provide guidelines for the calculation of the basic sealing width of the wave-tooth pad, so as to facilitate the engineering application.
【作者单位】： 茂名重力石化装备股份公司;
【分类号】：TH136
[Abstract]:In order to strengthen the leading role of gasket structure size in the sealing protection design of high-pressure and large-diameter flange bolts, five failure cases and four case studies of metal gasket installation were carried out. It is pointed out that the gasket width is based on the relative wide or narrow size of sealing surface and its influence on the installation of gasket. The corresponding technical countermeasures of gasket width design and manufacturing technical requirements are put forward. It is suggested that the flatness of large diameter flange sealing face of equipment should be increased and the thickness of gasket should be increased accordingly in order to improve the reliability of seal. This paper analyzes the width of gasket lost by the half wave tooth of the inner and outer diameter side of the wave-tooth pad, and suggests that the relevant standards provide guidelines for the calculation of the basic sealing width of the wave-tooth pad, so as to facilitate the engineering application.
【作者单位】： 茂名重力石化装备股份公司;
【分类号】：TH136
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