Angular stroke electric actuator, also known as angular stroke adjuster or angular stroke driver, is a type of electric actuator specifically used for controlling the angle adjustment of valves, dampers, and other equipment. Its main feature is the ability to drive the valve to perform precise rotational actions, usually used in applications that require adjusting the valve angle (such as within 90 °). This device is widely used in automation systems, controlling valve position or switch status through electric drive.
1、 Working principle of angular stroke electric actuator
The working principle of this device is to drive a transmission system (usually a mechanical device such as gears, screws, or racks) through an electric motor, causing the output shaft to rotate and control the angular position of valves, dampers, or other equipment. The control signal of the actuator generally comes from an automation control system (such as PLC or DCS), and the electric actuator drives the valve to open, close or adjust according to the signal.
2、 The main applications of angular stroke electric actuators
This device is mainly used in applications that require angle control, especially in industries such as industrial automation systems, energy, and chemical engineering. The following are its common application areas:
1. Valve control:
-This device is widely used to adjust the opening and closing status of rotary valves such as ball valves, butterfly valves, globe valves, etc. These valves usually require precise adjustment, and electric actuators can precisely control the opening of the valves through the received control signals.
-Common application scenarios include: oil and gas, electricity, chemical plants, pharmaceuticals, food industry, etc.
2. HVAC system:
-In HVAC systems, this equipment is used to control air flow, temperature, or humidity control valves. For example, controlling air valves, air conditioning valves, exhaust valves, etc. to ensure air quality and comfort inside buildings.
3. Water treatment and sewage treatment:
-This device is also widely used in water treatment plants and sewage treatment plants to control the opening and closing of inlet valves, drainage valves, sludge valves, and other equipment.
-Accurate valve regulation is crucial for controlling water flow, pressure, and quality in these applications.
4. Gas and steam control:
-In the energy industry, this equipment is used for gas regulation, steam control, pressure control, etc., to ensure the safe and efficient operation of the system.
5. Chemical and pharmaceutical industries:
-In chemical and pharmaceutical production processes, this equipment is used to control valves, material transfer valves, and other equipment in reaction vessels. Accurately control the flow and temperature of materials to ensure the stability of the production process.
6. Automated production line:
-On some automated production lines, this equipment controls the opening and closing of fluid valves and liquid conveying pipelines to achieve flow control or automated process control.
3、 The use and maintenance of angular stroke electric actuators
1. Precautions for use
-Selection: When selecting the equipment, ensure that its rated power, torque, angle adjustment range, and other parameters are consistent with the actual application. For example, the size, opening and closing time, and valve type of the valve can all affect the selection of electric actuators.
-Power requirements: Ensure that the voltage and frequency of the electric actuator match the power supply. Electric actuators typically use AC (alternating current) or DC (direct current) power sources, ensuring the appropriate power source type is selected.
-Installation environment: This device is typically used in industrial environments, and environmental factors such as temperature, humidity, dust, etc. should be considered. For actuators used in harsh environments, models with protection levels such as waterproof and dustproof should be selected.
-Debugging: After installation, the actuator needs to be debugged to ensure that it can accurately control the valve within the predetermined action range (such as 0 ° to 90 ° or 0 ° to 180 °), and adjust the response time and valve opening according to the requirements of the control system.
2. Maintenance and upkeep
Regular maintenance and inspection are essential to ensure the long-term stable operation of the equipment. Here are some common maintenance tasks:
-Regularly inspect the motor and transmission parts: Regularly inspect the motor, reducer, gear, and transmission system of the electric actuator to ensure that they are not damaged, worn, or have abnormal noise. If any problems are found, lubricate or replace the components in a timely manner.
-Lubrication: The transmission system of the actuator (such as gears and screws) should be regularly lubricated to ensure smooth operation and reduce wear. Regularly check the condition of the lubricating oil and replace it if necessary.
-Check sealing: Check the sealing system of the device, especially whether the waterproof, dustproof and other sealing components are intact, to prevent external pollutants from entering the interior of the actuator.
-Verification and adjustment: Regularly check whether the angle adjustment of the actuator is accurate. Calibration tools can be used to check whether the opening and actual position of the actuator are consistent. Adjust the stroke limit and opening setting of the actuator to ensure it meets specific control requirements.
-Electrical system inspection: Regularly check electrical connections and control circuits to ensure normal transmission of electrical signals. Check if the controller, sensors, and feedback system of the actuator are working properly to avoid control errors.
-Corrosion protection: In some special industrial environments, the equipment may be exposed to high temperatures, high humidity, corrosive gases, etc. If necessary, anti-corrosion coatings or enclosures can be used for protection to extend the service life of the equipment.
-Replace damaged components: For components that are severely damaged or irreparable, they should be replaced in a timely manner, such as motor damage, transmission failure, etc., to avoid affecting the normal operation of the system.
3. Common faults and their solutions
-The actuator cannot start:
-Reason: Possible power failure, incorrect control signal, motor damage, etc.
-Solution: Check the power supply and electrical wiring to ensure that the motor and control signals are normal. If the motor is damaged, it needs to be replaced.
-The actuator cannot adjust the angle properly:
-Reason: It may be due to stuck transmission components, insufficient lubrication, improper stroke setting, etc.
-Solution: Check the transmission components of the actuator, clean any stuck foreign objects, and add lubricating oil. Check if the travel restrictions are set correctly.
-The actuator produces noise or vibration:
-Reason: It may be due to mechanical component wear or insufficient lubrication.
-Solution: Check the wear of transmission components, replace worn parts in a timely manner, inspect and add lubricating oil.
Angular stroke electric actuator is an automation device used for precise control of valve or other equipment opening, widely used in industrial automation, energy, chemical, construction and other fields. It adjusts the angle through an electric motor-driven transmission system, with advantages such as high precision and remote control. In order to ensure its long-term stable operation, users should conduct regular inspections, maintenance, and upkeep to ensure that electrical systems, transmission systems, lubrication systems, and other components are working properly. Through proper use and maintenance, this equipment can provide reliable valve control for industrial automation systems.