Patent ID: 9028234
Filing Date: 2015-05-12
Classification: B23K,B29C,B29D,F16J

Abstract:
1. A pressure vessel, comprising: a container body, a plate member that is attached so as to partition an inside of the container body and that receives a pressure or a load, and a weld portion in which an end of the plate member is attached by welding to a wall surface member of the container body, wherein the plate member and the wall surface member form a weld structure portion, wherein the weld structure portion has at least a first shape displacement point and a second shape displacement point having a predetermined space therebetween, the first shape displacement point and the second shape displacement point being provided on the inside of the container body, wherein the wall surface member has a plate thickness t between a welding toe and a shape change start point at which the second shape displacement point is started, wherein the second shape displacement point is formed by reducing the plate thickness t of the wall surface member by a thickness d by machining, wherein the first shape displacement point is formed over a distance L wherein a distance from the welding toe to the shape change start point at which the second shape displacement point is started in the weld structure portion obtained after machining is L wherein the second shape displacement point is formed over a distance L wherein a welding leg length which is obtained in the weld structure portion after welding and before machining and which is a distance from the lower surface of the plate member to a welding toe before machining is defined to be W, L