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锅炉受压元件中,集箱平端盖、矩形集箱筒体与端盖、双筒之间的环形平端板(日本三浦锅炉)以及各种拉撑平板、有加固横梁的平板等皆属于平板元件。平板元件的强度裕度明显大于筒壳早已共知,但至今并未反映到强度计算标准中。期望本次对平板元件强度裕度的全面研究结果,能对强度标准修订工作起促进作用。 1 集箱平端盖 1.1 对接焊连接圆筒形集箱平端盖圆筒形集箱平端盖的周边与集箱筒体相连,平端盖的周边在弹性范围内,既不是铰支支承,也不是固支支承,而是处于中间状态,并接近于固支支承——早已得到试验证实。平端盖的强度计算公
Boiler pressure components, the header flat end cover, rectangular container box and end caps, double flat ring between the end plate (Japan Miura Boiler) and a variety of tension plate, plate with a reinforced beam and so on are all flat components . The strength margin of flat elements is obviously larger than that of the shell, which has not been reflected in the standard of strength calculation until now. It is expected that this comprehensive study on the strength margin of flat components will promote the revision of the intensity standard. 1 header flat end cover 1.1 butt welding connection cylindrical header flat end cap Cylindrical header The periphery of the flat end cap is connected to the header cylinder and the periphery of the flat end cap is within the elastic range and is neither hinged support nor solid Support, but in the middle, and close to the support - has long been confirmed by the test. Flat end cover strength calculation