Flat cover opening issue
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If, after making the opening in the flat cover, the thickness of the pipe fitting meets the requirements specified in 8.3 of GB150, can stress calculation be omitted?
It shouldn’t be possible; reinforcement deals with local stress, while other stresses also need to be taken into account.
It shouldn’t be possible; reinforcement deals with local stress, while other stresses also need to be taken into account.
Yes, as long as the thickness of the flat cover after the hole is made meets the requirements, reinforcement calculation for the hole can be omitted!
The one on the 3rd floor shouldn’t be, right? I actually operated it myself! ! Using SW6-6.0, the software indicated that the thickness of the takeover meets the requirements specified in 8.3 of GB150, and no additional reinforcement is needed for the openings; however, no calculations were provided. Why? 4L: The calculation for the openings in the flat cover itself passed, but when performing the reinforcement calculation for those openings, the thickness of the flat cover increased.
I actually did it myself! ! Using SW6-6.0, the software indicated that the thickness of the takeover meets the requirements specified in 8.3 of GB150, and no additional reinforcement is needed for the openings; however, no calculations were provided. In other words, as long as the flat cover itself meets the requirements, there’s no need to consider the issue of openings
"""I actually did it myself! ! Using SW6-6.0, the software indicated that the thickness of the takeover meets the requirements specified in 8.3 of GB150, and no additional reinforcement is needed for the openings; however, no calculations were provided. In other words, as long as the flat cover itself passes the calculations, there’s no need to consider the issue of openings. It’s not because the flat cover itself meets the requirements; it’s because the wall thickness of the connecting pipe satisfies the requirements specified in 8.3 of GB150 ； If the thickness of the takeover wall is less than the requirement of 8.3 in GB150, the flat cover itself may pass the calculations despite this. However, the reinforcement calculation for the flat cover is still insufficient.
The thickness of the girth plate meets the requirements of 8.3 in GB150; no additional reinforcement is required for the openings. However, the flat cover itself must meet strength requirements. Due to the weakening caused by the openings, the thickness of a flat cover is slightly greater than that of one without openings.
The thickness of the first nozzle meets the requirements specified in 8.3 of GB150. In the second calculation, the weakening factor due to the openings in the flat cover was taken into account based on the maximum cross-section of those openings; the flat cover was reinforced as a whole during the calculations. The thickness of the flat cover meets the required standards, so there is no need to consider reinforcing the nozzles separately. For high-pressure equipment, it is necessary to consider increasing the wall thickness of the nozzles, as attention must be paid to the strength of the weld corners and to the suitability of the size of the fillet welds