Tech Theory: Technical…Practical… Interesting Automation Industrial Solutions
At DELCO, we understand the importance of customer satisfaction and strive to meet the unique needs of every client. As a reliable valve supplier, we are committed to providing excellent customer service and high-quality products to ensure optimal performance and longevity. By choosing DELCO as your trusted control air supplier, you can benefit from customized valve assemblies designed specifically to meet your requirements, enhancing efficiency and reducing downtime.
Electric Actuators for Gate Valves: Function and Operation
When it comes to gate valves, adding an electric actuator makes a significant difference. Unlike manual gate valves or standard valves, integrating an actuator into the system enhances automation, improving operational efficiency, reducing response times, and saving labor costs. While centralized or remote control is important, the real benefit often lies in the ease of operation and reducing the physical effort required for manual valve operation.
Table of contents
- 1. What are Automated Electric Actuators?
- 2. Types of Electric Actuators
- 3. How Electric Actuators Work
- 4. Features and Functions of Electric Actuators
- 5. Protection Systems in Electric Actuators
- 6. Installation Process for Electric Actuators
- 7. Where to Buy Electric Actuators for Gate Valves?
- 8. How to get a quick quote for industrial valves?
What are Automated Electric Actuators?
An electric actuator for gate valves (or other pipeline fittings) is a device designed for automation and remote control, powered by an electric motor. These actuators replace manual operation and allow the valve to be operated remotely or automatically, making systems more efficient and reducing human intervention.
While electric actuators are commonly used, pneumatic, hydraulic, and electromagnetic actuators are also viable alternatives. The primary distinction lies in the additional medium that transmits mechanical force created by the electric motor:
- Hydraulic actuators use oil or other fluids.
- Pneumatic actuators rely on compressed air.
- Electromagnetic actuators operate using an electric magnet, with no motor involved.
Electric actuators are designed to be mounted onto existing manual gate valves (replacing the handwheel) and vary in design and operation depending on the type of valve and its mechanism.
Types of Electric Actuators
Electric actuators can be classified into two categories based on their movement type:
1. Linear (Push/Pull Actuators) – These actuators move a rod in a linear direction to operate the valve.
2. Rotary Actuators (With Gearbox) – These actuators convert rotational motion into valve operation. They can further be categorized based on the gear type:
- Worm gear actuators
- Planetary gear actuators
- Conical/Cylindrical gears
- Complex, combined gear systems
Since the operation is often remote, additional components such as sensors and safety systems are required to monitor and protect the actuator from common faults, reducing reaction time in case of issues.
How Electric Actuators Work
The core of an electric actuator is the electric motor, which drives the mechanism for opening or closing the valve. The motor’s rotational motion is converted either into linear movement of a rod or rotational motion through a gear mechanism (such as worm or planetary gears). This motion then operates the valve.
Basic Operation Process:
- The operator sends a signal via a remote control (such as pressing a close button).
- The signal powers the motor, starting its rotation.
- The valve begins to move.
- When the valve reaches its closed position, a limit switch (e.g., Close Limit Switch) cuts power to the motor.
- For opening, the process is reversed, with the motor rotating in the opposite direction, powered by another limit switch (e.g., Open Limit Switch).
This process may include additional elements like temperature sensors and tachometers for added protection and efficiency.
Features and Functions of Electric Actuators
Electric actuators provide several benefits:
- Remote Monitoring: Actuators allow for real-time status updates, helping identify issues like failures or operational malfunctions.
- Faster Valve Operations: Opening and closing the valve becomes quicker compared to manual operation.
- Labor Efficiency: Saves personnel from the need to manually operate valves, reducing human labor and time.
- Mechanical Force: Provides the necessary mechanical force to open or close valves, especially for large, heavy valves that would be difficult to operate manually.
- Enhanced Safety: Particularly important for hazardous environments, electric actuators improve worker safety by reducing physical strain and the risk of accidents.
However, there are some disadvantages, including:
- Higher Initial Costs: Electric actuators add to the overall cost of the system, and there are ongoing expenses for maintenance and electricity.
- Additional Wiring: Requires the installation of electrical wiring, which comes with its own set of safety requirements.
- Complex Maintenance: More intricate systems may require specialized knowledge for repairs.
- Sensor Failures: The failure of sensors or switches can disrupt actuator functionality.
Protection Systems in Electric Actuators
To ensure safe and efficient operation, electric actuators are equipped with multiple protection systems:
- Manual Override: Most actuators allow manual operation in case of power failure, typically via a handwheel on the actuator body.
- Diagnostic Systems: Detect issues like motor failure, overheating, or stalling.
- Overload Protection: Prevents damage from excessive loads by blocking further operation.
- Voltage Monitoring: Ensures the motor only operates within specified voltage ranges.
- Prevention of Simultaneous Actions: Avoids the risk of both opening and closing commands being issued at the same time, which could cause damage.
Installation Process for Electric Actuators
Here’s a typical installation process for an electric actuator:
- Selecting a Compatible Actuator: Different valve types require different actuators, so it’s important to match the actuator’s specifications to the valve’s operational needs.
- Remove the Manual Handwheel: Dismount the handwheel and ensure the mounting area is clean and ready for the actuator installation.
- Align the Actuator with the Valve: The actuator’s coupling is aligned with the valve’s flange. For some valves, the actuator may need to be switched to manual mode during installation for proper alignment.
- Secure the Actuator: Tighten the bolts to ensure a firm connection between the actuator and valve.
- Manual Test: Verify that the valve opens and closes smoothly.
- Power Connection: Connect the power supply and ensure proper connections to the actuator’s control system.
- Test the System: After installation, check all safety and diagnostic systems and ensure the actuator operates correctly. Make adjustments as needed.
Where to Buy Electric Actuators for Gate Valves?
At DELCO Valve, we offer a wide range of pipeline valves, actuators, and accessories. We have warehouses in Moscow, and our delivery service ensures fast shipping to cities nationwide. With both wholesale and retail options, we make purchasing as easy and convenient as possible for our customers.
How to get a quick quote for industrial valves?
If you have questions about valves or want to get a quote, please feel free to contact us, we will reply within 6 hours. Phone +86 159 8960 2972, WhatsApp +86 159 8960 2972 or email marketing [email protected].
DELCO’s quality, competitive prices and excellent service make it the best valve partner to help you grow your business. Customize your valves, we have no minimum order.
At DELCO, we understand the importance of customer satisfaction and strive to meet the unique needs of every client. As a reliable control valve supplier, we are committed to providing excellent customer service and high-quality products to ensure optimal performance and longevity. By choosing DELCO as your trusted control valve supplier, you can benefit from customized valve assemblies designed specifically to meet your requirements, enhancing efficiency and reducing downtime.
Furthermore, our competitive pricing on electronic pressure regulators enables you to offer top-notch solutions. As one of the leading control valve manufacturers, we take pride in delivering reliable valves that not only meet industry standards but also contribute to the overall profitability of your business. By partnering with DELCO, you can have peace of mind knowing that you are making a wise choice for the long-term success of your company.
