Opening and connection of pressure vessel
In order to enable the equipment to carry out normal operation, testing, and maintenance, the shell and head of the pressure vessel must generally have holes. Such as material import and export; connection holes for measuring pressure, temperature and installation of safety devices; liquid level gauge holes, manholes and hand holes, etc.
1. Take over the connection with the shell
The connection between the pipe and the shell is welded.
2. Take over the connection type with the outside
There are generally three types of interfaces for connecting pipes and external connections: threaded short pipe type, flange short pipe type and flat flange type.
3. Hole reinforcement
After the opening of the container shell, the discontinuity of the shell structure was caused, which caused stress concentration, which increased the local stress at the edge of the opening several times. In order to reduce the local stress at the edge of the opening, the opening part of the shell needs to be reinforced. There are two methods of opening reinforcement: local reinforcement and overall reinforcement.
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