Research on stiffness characteristics of rectangular electric butterfly valve
Through the research on the stiffness characteristics of rectangular electric butterfly valve, the following four conclusions can be drawn:
1) The rigidity of rectangular electric butterfly valve has nonlinear hard characteristics, which can automatically avoid resonance, thus effectively suppressing resonance amplitude;
2) When the geometric parameters of the electric butterfly valve are given, the selection of air pressure plays a decisive role in the rigidity of the electric butterfly valve. The rigidity of the electric butterfly valve is close to the proportional relationship with its internal air pressure;
3) For the static process, the stiffness of the electric butterfly valve increases with the increase of the load;
4) For the dynamic load state, the increase of the load will lead to a significant increase in the stiffness of the butterfly valve. The increase of the amplitude will also lead to the increase of the stiffness of the butterfly valve, which will lead to the increase of the natural frequency. Therefore, even in the state of large amplitude, good vibration isolation effect can be guaranteed.