How to calculate the travel time of pneumatic valve?

Through the relationship between the output torque and the linear speed of the valve under the same pressure, combined with the mature torque-time setting widely used in the existing angular stroke electric actuator, a more reasonable setting criterion is put forward. [Author's Abstract]

The necessity of determining the criteria will inevitably involve the setting of travel time when developing a new product series or greatly modifying and updating the original products. Usually, you can refer to the same or similar torque parameters of the same type, but there are still the following problems: (1) When the setting of travel time has to be adjusted, how to evaluate the rationality of the adjustment scheme; (2) How to set the travel time when there is no torque range for reference. Although the travel time can be selected in a wide range, there will always be an optimal setting scheme for a specific product. Whether designing a new product or improving a product, it should be as close as possible to the best advantage. Therefore, it is necessary to determine the theoretical support of this best advantage, that is, to establish a standard. The working torque of the angular stroke electric actuator is mainly determined by the diameter of the valve. When the fluid pressure is constant, the pressure on the valve is proportional to the square of I=I diameter. If the total stroke time remains the same, the linear velocity at point A in figure 1 will increase with the increase of the valve diameter, which will bring additional load to the valve and the power required by the electric actuator will also increase sharply, which is obviously unreasonable. Therefore, by adjusting actuators with different output torques, ......