Numerical Simulation Analysis of the Stress of the Valve Rods Based on the Wind Tunnel Hot Blast Valves under High Temperatures and High Pressures

The temperature difference stress and load stress of the valve rods of the wind tunnel hot blast valves were analyzed using numerical simulation because the valve rods were affected by high temperatures, high pressures, and sealing force when the valves were closed. The insulating material at the end of the valve rod was changed based on the calculation result of numerical simulation to satisfy the strength requirement of the valve rods. When the valves were open, the valve rods were impacted by high pressure hot gas. The bending stress on the valve rods induced by the high pressure hot gas was analyzed using numerical simulation, and the simulation result was verified.