Calculation for reinforcement of openings in jacketed vessels
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When dealing with jacketed vessels that have openings on the inner cylinder, and the jacket section uses the inverted flange structure specified in GB150, how is the reinforcement calculation for these openings in the jacket carried out?
If you’ve flanged the jacket, why is it considered an opening? 150.3 The appendix specifies the thickness requirements for jacket guards or flanges
Since the inner cylinder has openings, you can simply carry out the reinforcement calculations as for normal openings in an inner cylinder. As for the jacket inversion structure, it only needs to meet the structural requirements specified in the appendix of GB150.3.
Has the original poster considered that the structure of the jacket transition tube is different from the standard structure for reinforcement through openings; it belongs to a sealing structure.
I’ve learned it; I don’t come into contact with jacketed vessels very often in my daily work. In other words, since the thickness of the jacket seal meets the requirements specified in Appendix D10 of 150.3, no calculations are necessary in the calculation sheet. Our original sealing cone was also calculated based on a conical head.
For example, if the medium inside the jacket is water and the design pressure is 0.6 MPa, since there are openings in the jacket section, this also weakens the jacket body. Logically, reinforcement calculations should definitely be carried out – how can this be explained?
I’ve learned it; I agree that no reinforcement is needed.
Appendix D10 of GB/T150.3 only specifies the requirements for jacket closures; where does it state that meeting these requirements eliminates the need for calculations?
I have the same question; no indication that no calculation is required can be found in the standards. Furthermore, according to the standard interpretation of clause D.10: the jacket closure design recommended in this appendix merely indicates the type of weld joint, and does not include all details regarding design and manufacturing.
To put it another way, even if you need to perform calculations for reinforcement through openings here, this section is still a structure subjected to external pressure rather than internal pressure. If the sleeve body is flanged directly, it should not even be counted. If you make cones by yourself, it’s better to just make straight tubes.
I have a question: the sleeve body has been flanged. Where in the textbook does it say that no calculation is necessary? :Lol, what’s mentioned in GB150 refers indeed only to the structural design, but it doesn’t explain how to conduct strength checks