Knock Resistance Analysis Of GC Oven Anti-detonation Door

Flammable gases are widely used in industries especially in chemical or petroleum chemical industry.Accidental gas explosion in confined space often occurs because of defection of installations or mistaken operations.High pressure and rate of pressure rise caused by confinement of explosion energy are intolerable for most industrial equipment.Many injuries and much financial loss are caused,and even environmental damage.So importance of the research work on gas explosion in confined space and structure response of explosion is obvious,which is valuable and referable for prevention and control of such hazardous industrial disaster.The dynamic response for the gas chromatograph structure,sustaining impulsive load,has been analyzed in the paper.There is an explosive possibility in GC oven because of Flammable gas H2.In order to keeping customer save,the instrument's anti-detonation must be considering.The object of designing is prevent the door breaking and presenting projectile.Researching the character of explosive load.Analyzing the structure response, breakage mode and breakage principle under dynamic loads,such as explosive loads and impulsive loads.Designing the oven door structure.Numerical methods for simulation of explosion and resulting structure response of a GC oven door were investigated.The response of the oven door structure modeled by ansys software was simulated by using the dynamical FEA code LS-DYAN with Arbitrary Lagrange-Euler arithmetic and JWL equation of state.Finally numerical analysis results are compared with experimental results.Comparing the experiment results with the results from finite element code,two conclusion can be obtained as follows:(1) Combining the Numerical methods and experiment,solid explosive simulating the gas explosive,can obtain the results correctly and easily. (2) The comparison shows a good agreement for estimation of the permanent deformations of the oven door.It is concluded that numerical simulation of explosion loads on GC oven door structure can be a valuable tool for estimating both the risk and the damage.