Cylindrical Vacuum Chamber Wall Thickness

Asme viii only considers membrane stresses circumferential in a spherical vessel i e.

Cylindrical vacuum chamber wall thickness.

Chamber feet on the outside ensure stability eye bolts or hoisting shackles allow safe transport. Chamber diameter wall thickness under 17 inches. The d shape chamber when viewed from above combines the thin wall of the cylindrical chamber with the volume and large o ring sealed access door of the box chamber making it appropriate for high vacuum applications. The pressure and the temperature i want to work at are in the range of 0 1 0 07 mbar and 200 350 degree of centigrade.

Chamber diameter of 600 mm requires a flat bottom about three times the wall thickness as of a dished end. The material for both systems is black iron sheet. Any bulk container will naturally try to form a spherical shape under sufficient internal pressure. Thicker walled material should be specified for chambers with ports having angular tolerances of less than 1 2º or for processes that require large mass for vibration dampening.

Pressure vessels calculates the wall thickness of plain spheres of same material and equal wall thickness throughout. The door is frequently aluminum to reduce weight. Vacuum chamber design guide chamber wall thickness recommended minimum wall thicknesses are listed in the table below. Radial stresses are ignored which is considered reasonable given that the maximum.