The electric butterfly valve is filled with air inside the cord fabric bag, which uses the volume elasticity of the gas to play the role of butterfly valve, valve and work. The electric butterfly valve has a good effect of absorbing high-frequency vibration and sound insulation. Compared with the steel plate butterfly valve, the electric butterfly valve has a longer service life when subjected to severe vibration loads. Using the height control valve system, the electric butterfly valve maintains a certain working height under any load, This is very beneficial for vehicles with large load changes
The stiffness of the butterfly valve changes with the change of load, so the natural vibration is almost unchanged under any load. The natural vibration frequency range of the ordinary steel plate butterfly valve is narrow because its stiffness chamber is unchanged, and the change with the change of load is the static performance comparison between the steel plate butterfly valve and the electric butterfly valve
The electric butterfly valve has nonlinear performance, and its performance curve can be designed into an ideal shape. For example, in the vehicle suspension system, the rational shape is S-shaped, that is, it has a relatively low stiffness in the middle section of the curve, while the stiffness gradually increases in the edge section of the tension and compression stroke In this way, the running performance of the vehicle during normal driving can be guaranteed
Soft, but in occasional occasions such as passing through curves and turnouts, when the electric butterfly valve is greatly pulled and compressed, it gradually hardens, which can limit the amplitude of the car body. For ordinary steel plate butterfly valve, its performance curve is linear. If this butterfly valve suspension device has the above non-linear characteristics, it is necessary to complicate the structure
A cutoff hole is added between the electric butterfly valve and the additional air chamber. When air flows through the cutoff hole, energy loss will occur, so it can play a role in reducing vibration. If the size of the cutoff hole is properly selected, damping dampers can be omitted
The rigidity of the electric butterfly valve can be selected by changing the air pressure regardless of the load capacity. Therefore, the rigidity can be selected very low as required. For example, the rigidity can be reduced by increasing the internal volume of the additional air chamber
For electric butterfly valves of the same size, when the internal pressure changes, different bearing capacities can be obtained. This enables the same electric butterfly valve to adapt to multiple load requirements, so the economic effect is good. In addition, the electric butterfly valve can have different heights under a certain load through the height control valve. Therefore, the electric butterfly valve can adapt to multiple structural requirements