Patent ID: 6019135
Filing Date: 2000-02-01
Classification: F02B,F02M

Abstract:
A diaphragm stopper construction, for a high-pressure accumulator, which defines the limit of deformation of a flexible disk-shaped metal diaphragm disposed in a high-pressure vessel which supports and seals the perimeter portion of said diaphragm to form a high-pressure chamber, wherein excessive concentrations of stress in said diaphragm are prevented by means of a curve of a contact surface of said stopper which comes into contact with said diaphragm which comprises:a first curve for the perimeter portion of said diaphragm which is determined on the basis of a first equation expressing deflection when a disk secured around its circumference is subjected to a uniformly distributed load; anda second curve for the central portion of said diaphragm which is determined on the basis of a second equation expressing large deflection when a disk secured around its circumference is subjected to a uniformly distributed load.