How to handle opening reinforcement for extremely large openings
Thread Content
Due to process requirements, a heat exchanger has an inner diameter of 1300; holes with a diameter of 700 are made in the shell side cylinder. The pressure on the shell side is -0.1 MPa. The calculations for strengthening these holes using various methods show that such reinforcement is not feasible, and the structure of the equipment cannot be modified. How can the strength of the equipment be ensured to meet its operational requirements?
Your SW6 should be upgraded; the latest version can now perform calculations.
It shouldn’t be outside the scope of the analysis method specified in GB150; it’s not even 0.9 times 1300.
This post was last edited by SDHZZXM on 2017-1-10 at 11:37. It can be calculated using SW6... the pressure-area method
The analysis method is only used for internal pressure...
The GB150 calculations are relatively conservative; if you can have a design institute conduct a finite element analysis, that would be useful for getting more accurate figures.
Equivalent calculation. With the same thickness calculated, the external pressure area is smaller than the internal pressure area
hg/t20582-2011 also includes calculations for reinforcing large openings; let’s see if it’s possible to carry out such calculations.