A reasonable torque range must be selected for pneumatic actuator
Time: 2020-10-21 07:35:21Copyfrom: Wuxi Shengeruo Electromechanical Co., Ltd.
A reasonable torque range must be selected for pneumatic actuator
Correct selection of pneumatic actuator
The actuator is divided into electric and pneumatic.
Take pneumatic as an example, pneumatic is divided into single action (spring return) and double action. The screw rod is driven by compressed air to drive the valve rod to rotate.
1. Select the actuator according to the size of air source (instrument gas)
2. The output torque of the pneumatic actuator depends on the torque required by the valve
The torque required for valve opening and closing determines the output torque of the electric actuator, which is generally proposed by the user or selected by the valve manufacturer. As an actuator, the manufacturer is only responsible for the output torque of the actuator. The torque required for the normal opening and closing of the valve is determined by the valve diameter, working pressure and other factors. However, due to the differences in the processing accuracy and assembly process of valve manufacturers, so The required torque of valves of the same specification produced by different manufacturers is also different. Even if the same valve manufacturer produces the same specification of valve, the torque of the actuator is too small to open and close the valve normally when the actuator is selected. Therefore, a reasonable torque range must be selected for the pneumatic actuator. (Shanghai jinzexin pneumatic valve Co., Ltd.)
2. The torque required to rotate the valve is too small to rotate, and too large, and the service life of the valve is not long. Generally, 30% allowance for torque is OK.
If the torque of the actuator is too small, the valve can not be opened and closed normally. Therefore, a reasonable torque range must be selected for the pneumatic actuator.
Correct selection of pneumatic actuator
The actuator is divided into electric and pneumatic.
Take pneumatic as an example, pneumatic is divided into single action (spring return) and double action. The screw rod is driven by compressed air to drive the valve rod to rotate.
1. Select the actuator according to the size of air source (instrument gas)
2. The output torque of the pneumatic actuator depends on the torque required by the valve
The torque required for valve opening and closing determines the output torque of the electric actuator, which is generally proposed by the user or selected by the valve manufacturer. As an actuator, the manufacturer is only responsible for the output torque of the actuator. The torque required for the normal opening and closing of the valve is determined by the valve diameter, working pressure and other factors. However, due to the differences in the processing accuracy and assembly process of valve manufacturers, so The required torque of valves of the same specification produced by different manufacturers is also different. Even if the same valve manufacturer produces the same specification of valve, the torque of the actuator is too small to open and close the valve normally when the actuator is selected. Therefore, a reasonable torque range must be selected for the pneumatic actuator. (Shanghai jinzexin pneumatic valve Co., Ltd.)
2. The torque required to rotate the valve is too small to rotate, and too large, and the service life of the valve is not long. Generally, 30% allowance for torque is OK.
If the torque of the actuator is too small, the valve can not be opened and closed normally. Therefore, a reasonable torque range must be selected for the pneumatic actuator.
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