This paper has expounded the changes of the internal pressure instability formulae,fatigue life formulae and the allowable stress value produced by pressure for rectangular expansion joint in EJMA standards new editio...This paper has expounded the changes of the internal pressure instability formulae,fatigue life formulae and the allowable stress value produced by pressure for rectangular expansion joint in EJMA standards new edition and our own views has been stated.展开更多
ased on productive characteristic of chemical enterprise,author put forward two release pressure arithmetics of safety valve online adjusting,solve the problem of must calculate the effective area of valve seat,that i...ased on productive characteristic of chemical enterprise,author put forward two release pressure arithmetics of safety valve online adjusting,solve the problem of must calculate the effective area of valve seat,that is bottlenek of calculating the release pressure in safety valve online adjusting.After adjusted hundreds of safety valves,we can reach that those two methods have enough efficiency and precision.展开更多
文摘This paper has expounded the changes of the internal pressure instability formulae,fatigue life formulae and the allowable stress value produced by pressure for rectangular expansion joint in EJMA standards new edition and our own views has been stated.
文摘ased on productive characteristic of chemical enterprise,author put forward two release pressure arithmetics of safety valve online adjusting,solve the problem of must calculate the effective area of valve seat,that is bottlenek of calculating the release pressure in safety valve online adjusting.After adjusted hundreds of safety valves,we can reach that those two methods have enough efficiency and precision.
