Optimal selection method of natural gas pipeline sealing material

The invention provides a natural gas pipeline sealing material optimization method. According to the method, the sealing performance of the quick-opening blind plate sealing ring can be comprehensively, accurately and stably evaluated, and the storage safety of oil and gas is guaranteed. The method mainly comprises the four steps that firstly, a GD quick-opening blind plate sealing ring geometric model is established, and grids are divided; 2, setting numerical simulation parameters of the finite element model of the GD quick-opening blind plate sealing ring; 3, simulating the influence of different rubber hardness, spring elasticity modulus and environment temperature on the sealing performance of the quick-opening blind plate sealing ring, solving strain and contact pressure under different models, and further finding out an optimal material combination; 4, on the basis of finite element analysis and analog simulation results of the imported GD blind plate sealing ring, a material combination of the optimal