Flat head

The working principle of flat-bottomed head: flat-bottomed head is the end cover of pressure vessel, and is a main pressure-bearing component of pressure vessel. It plays a role of sealing. One is made of the top and bottom of the tank pressure vessel, the other is the end of the pipe, not ready to extend forward.

The flat bottom head is the end cover of the pressure vessel, and is a main pressure bearing part of the pressure vessel. It plays a role of sealing. One is to make the top and bottom of the tank pressure vessel, and the other is that the pipe ends and is not ready to extend further, then a head is used to seal the pipe in a welded form. There are blind panels and caps for the same purpose as the head, but those two products can be disassembled. And after the head is welded, it can not be dismantled. The fittings include pressure vessels, pipes, flanges, elbows and so on.

At present, most pressure vessel manufacturers and pressure vessel design units are separated, and low support professional head manufacturer manufacturing head. Because GB 150 stipulates that "the small forming thickness of the head does not capture the nominal thickness minus the negative deviation of the thickness of the steel plate" does not match the manufacturing process, container designers, purchasing personnel of pressure vessel manufacturing enterprises, and head manufacturer communicate with each other, it is easy to waste the cutting materials of the head, even because the head is used on the head. Manufacturing process thickening, increasing weight does not recognize and cause disputes.

Design pressure P = 1.6 MPa, design temperature 200 C, head diameter Di = 1000 mm, corrosion allowance C2 = 2 mm, head material: 16MnR. (2) Check table 4-1 of GB150, take [_] t = 170 MPa according to delta n = 6-16 mm, take GB 150, shape coefficient K = 1.00, weld coefficient 1.0.