Liquid Cooling Butterfly Valve Actuator Features And Options
Butterfly Valve cooling Actuation Methods
Based on the motion of the actuator, cooling Butterfly Valve actuators are categorized as linear and angular.
cooling water Butterfly Valve actuators are classified according to their drive structure:
1. Diaphragm Type
2. Cylinder Type
① Piston Cylinder Type
② Piston Rack Type
③ Piston Connecting Rod Type
④ Piston Fork Type
⑤ Piston Screw Type
3. Vane Type
4. Air Motor Type
5. Diaphragm and Ratchet Combination Type
Hydraulic Cylinder Type
Hydraulic Motor Type
Linkage Drive
Electro-Hydraulic
Butterfly Valve data center Actuation Methods
Manual Handle/Handwheel Type (including reduction gears via intermediate gears), Spring Lever Type, Electric Drive, Solenoid Type, Motor Type, Pneumatic Drive
Features of Various cooling Butterfly Valve Actuators
Advantages of Electric Actuators
1. Wide applicability, unaffected by ambient temperature
2. Wide output torque range
3. Easy to control, capable of freely accepting various signals, including DC, AC, shortwave, and pulse signals, making them suitable for amplification, memory, logical judgment, and calculations
4. Ultra-miniaturization possible
5. Mechanical self-locking
6. Easy installation
7. Easy maintenance and repair
Disadvantages of electric actuators
1. Complex structure
2. Low mechanical efficiency, generally only 25% to 60%
3. Output speed cannot be too low or too high
4. Susceptible to fluctuations in power supply voltage and frequency
Advantages of hydraulic actuators
1. Simple, compact structure, and small size
2. High output force
3. Easy to achieve low or high speeds, capable of stepless speed change
4. Capable of remote automatic control
5. High efficiency due to the viscosity of hydraulic oil, with self-lubricating and rust-resistant properties
Disadvantages
1. Fluctuations in oil temperature cause changes in oil viscosity
2. Hydraulic components and piping are prone to leakage
3. Excessive piping, making maintenance inconvenient
4. Unsuitable for performing various signal calculations
Advantages of pneumatic actuators
1. Simple structure
2. Easy to obtain air supply
3. Achieve higher switching speeds.
4. A speed regulator can be installed to adjust the switching speed as needed.
5. Gas is highly compressible, resulting in a springy closing action.
Disadvantages
1. Compared to hydraulic actuators, these are larger and less suitable for large-diameter, high-pressure cooling water Butterfly Valve.
2. Due to the compressibility of gas, uniform speed is difficult to achieve.
Choosing a Butterfly Valve cooling Actuation Method
The selection of a water cooling Butterfly Valve actuation method is based on:
cooling Butterfly Valve type, specifications, and structure.
water cooling Butterfly Valve opening and closing torque (line pressure, maximum pressure differential across the cooling water Butterfly Valve) and thrust.
Ambient temperature and fluid characteristics.
Usage and frequency of use.
Opening and closing speed and time.
Butterfly Valve cooling system stem diameter, thread pitch, and direction of rotation.
Connection method.
Power source parameters: Electric power supply voltage, number of phases, and frequency; Pneumatic power supply pressure; Hydraulic power supply pressure.
Special considerations: low temperature, corrosion resistance, explosion resistance, waterproofness, fire resistance, radiation resistance, etc.
