Research on Semi-Empirical Calculation Formula of Bursting Pressure Design of Ultra-High Pressure Bursting Disc

Abstract As a safety relief device for pressure vessel, bursting disc is widely used in various pressure equipment for its simple structure, strong airtightness, large emission capacity, wide adaptability, sensitive overpressure response and other characteristics, which plays an important role in ensuring the safety of pressure equipment in complex environment. With the development of society and economy, pressure vessel is developed towards the direction of extreme and lightweight. In this paper, a semi-empirical formula for calculating the bursting pressure of ultra-high pressure bursting disc design is presented. The non-uniform thinning of the wall thickness after pre-arch deformation of ultra-high pressure bursting disc is measured. The theoretical calculation formula of nonuniform thinning wall thickness after deformation of bursting disc is established based on the hypothesis that the bursting disc is spherical after deformation. In order further simplify the calculation formula and process of semi-empirical formula, test data of different materials, bursting pressure and deflection height are selected to establish the correlation between the deflection height of bursting disc and the strain hardening index of material. The semi-empirical formulations of the designed blasting pressure are simplified, and the numerical simulation and experimental verification of the blasting pressure of the bursting disc are carried out by using experimental method to verify the accuracy of the calculation results of the semi-empirical formula and simplified formula of the designed blasting pressure.