Experimental Research on Pneumatic Butterfly Valve and Linear Motor Driving in Summer
As an elastic energy storage device, there are metal ball valves, magnetic ball valves and pneumatic butterfly valves to choose from. Through comparative study, it is found that:
1) The metal ball valve has poor ability of positive vibration, vibration absorption and noise reduction. The pneumatic butterfly valve is a new type of elastic positive vibration, noise reduction, energy storage and buffer element. It is a non-metallic ball valve that uses the compressibility of the gas to realize the elastic effect by filling the flexible closed gas chamber made of composite materials with compressed gas. It has the advantages of low frequency, high frequency vibration absorption and excellent land sound performance.
2) The stiffness of the metal ball valve is a constant value and cannot be adjusted, and the natural frequency is a fixed value, which is difficult to adapt to the speed change requirements of the equipment. The vertical stiffness and horizontal stiffness of the pneumatic butterfly valve can be adjusted, and the bearing capacity can be controlled through internal pressure regulation. In particular, the inherent characteristics are related to the initial inflation pressure, which can be adjusted in a small range, more suitable for complex reciprocating drive requirements.
3) From the above analysis of the reciprocating motion process of the bomb lean mass star block model, it can be concluded that whether in the starting energy storage stage or in the reciprocating operation stage with the working frequency and stroke, the stiffness characteristics of the Xijia elastic energy storage device should preferably change from soft to hard as the displacement increases, so as to reduce the starting resistance, and provide rapidly increasing braking force when approaching the two end points of the stroke, The nonlinear stiffness characteristics of pneumatic butterfly valve just meet its requirements.
4) The service life of pneumatic butterfly valve is usually longer than that of metal ball valve, which is 4 times that of laminated ball valve. With the help of the electromagnetic reversing valve, the inflation air travel inside the pneumatic butterfly valve can be dynamically adjusted even in the process of reciprocating movement, with great flexibility and controllability.
5) As for the magnetic ball valve, on the one hand, the permanent magnet is limited by itself and only suitable for the occasions with small thrust, while the electromagnetic ball valve site overcomes this shortcoming, but it consumes electric energy very much. On the other hand, the magnetic field generated by the magnetic elastic volt always has an impact on the electromechanical system.