Wide range of electric actuators
Classification:
Release Time：2018-07-02
Electric actuators are also customarily called electric actuators, electric heads. Including two parts: electric actuator and regulating valve. The control accuracy is mainly determined by the control performance of the electric actuator. It can convert the control signal of the system into the angular displacement and linear displacement of the output shaft, and control the position of the valve and other intercepting parts or other adjustment The mechanism makes the controlled medium work according to the system requirements. With the development of industrial automation, the requirements for industrial production automatic control systems are getting higher and higher, so the requirements for various electric actuators are getting higher and higher, which makes the market a variety of actuators flooding, varieties and shapes.
Electric actuators are also customarily called electric actuators, electric heads. Including two parts: electric actuator and regulating valve. The control accuracy is mainly determined by the control performance of the electric actuator. It can convert the control signal of the system into the angular displacement and linear displacement of the output shaft, and control the position of the valve and other intercepting parts or other adjustment The mechanism makes the controlled medium work according to the system requirements.
With the development of industrial automation, the requirements for industrial production automatic control systems are getting higher and higher, so the requirements for various electric actuators are getting higher and higher, which makes the market a variety of actuators flooding, varieties and shapes.
There are many types of electric actuators and their quality is uneven. Before selecting brands, you must judge in detail the specifications and brands of the electric actuator products you need. The suitable electric actuator specifications can not only effectively extend the life of the electric actuator, but also avoid the occurrence of insurance incidents. When the brand and product specifications are confirmed, it is the choice of the place of purchase.
There are many types of electric actuators. Electric actuators of different types and functions can be called electric valves after matching the valves. However, in the process of design and selection, only the parameters of the valves are ignored or the relevant requirements of the electric actuators are not clear. This not only makes the electric valves fail to perform well, but also brings unnecessary troubles in the process of installation, debugging and use, it has serious consequences for production.
The basic structure of the electric actuator actuator is the actuator of the driving device, which generates the corresponding thrust according to the size of the control signal, and promotes the action of the regulating valve. The regulating valve is the regulating part of the electric actuator. Under the action of the thrust of the actuator, the regulating valve produces a certain displacement or rotation angle to directly regulate the flow of fluid. In order to ensure the normal operation of the actuator and improve the quality and reliability of the adjustment, the actuator must also be equipped with certain auxiliary devices. Commonly used auxiliary devices are valve positioner and hand wheel mechanism.
Different valves to choose different electric actuators, generally to rotate the valve plate angle, lift the valve plate and other ways to achieve opening and closing control.
1. Determine the output torque of the electric actuator according to the torque required by the valve. The torque required for opening and closing of the valve determines the output torque selected by the electric actuator. Generally, it is proposed by the user or selected by the valve manufacturer. As the actuator manufacturer, it is only responsible for the output torque of the actuator. The torque required for normal opening and closing of the valve is determined by factors such as the diameter of the valve, working pressure, etc., but due to the difference in processing accuracy and assembly process of the valve manufacturer, therefore, the torque required for valves of the same specification produced by different manufacturers is also different. Even the torque of valves of the same specification produced by the same valve manufacturer is also different. When the torque selection of the electric actuator is too small, it will cause the normal opening and closing The valve, so the electric actuator must choose a reasonable torque range.
2, according to the different uses of electric actuators to determine the electrical parameters due to the electrical parameters of different electric actuator manufacturers are different, so the design selection generally need to determine the electrical parameters, mainly motor power, rated current, secondary control circuit voltage, often in this area of negligence, as a result, the mismatch between the parameters of the control system and the electric actuator resulted in tripping at work, fuse blowing, and thermal overload relay protection jumping.
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2026/02/28
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