On the issue of reinforcing openings in sealed tubes
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There’s a question that suddenly puzzled me: devices usually require temperature measurement sleeves, which are sections of pipe that extend into the interior of the device and are then sealed off with plugs or small end caps, creating a sealed tube that is subject only to external pressure. Assume that in a reactor at 2.6 MPa, only a φ32×3.5 fitting is welded to the head, and one end inside the reactor is sealed, creating a sealed tube welded to the head. At this position, is the reinforcement for the opening calculated as φ32×3.5? Since the pressure inside the sleeve is equal to atmospheric pressure, the fitting only has to withstand an external pressure of 2.6 MPa. The stress at the openings in the head concentrates at the welds, exerting compression on the fitting; what are everyone’s thoughts on the reinforcement area for this part? Can it be calculated as φ32×3.5?
:'(:'(:'(:'(Has no one thought of it?
This type of sleeve that is welded directly to the shell has not been used very often; in previous cases for reactors, it was the pipe flanges that were welded to the shell, with the sleeve fitting together with those pipes. :lol
Strengthening means compensating for the lack of strength in a certain area; that’s why the equal-area method is used – add as much strength as is missing
I understand the general principles, but could you be more specific? How is the internal extension pipe inside the tank calculated, and how is the external extension pipe outside the tank calculated?
I get it. You still ask this? To test us?
Normally, one has to take all those complexities into account