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Key Points of Type Selection of Electric Actuators Selection of electric actuators according to valve type There are many kinds of valves and their working principles are different. Generally, the opening and closing control is realized by rotating the angle of the valve plate and lifting the valve plate. When matching with the electric actuator, the electric actuator should be selected accordin...
Electric actuator The advantages are easy access to energy, fast signal transmission speed, long transmission distance, easy centralized control, high sensitivity and accuracy, easy coordination with electric regulating instruments, and simple installation and wiring. The disadvantage is that the structure is complex, the average failure rate is higher than that of the pneumatic actuator, which is...
The electric actuator uses AC servo motor as the driving device of the position dish servo mechanism. The 4-20mA DC control signal of the adjusting system is received by the matched position locator control board and compared with the position feedback borrow number of the position transmitter. The signal deviation after comparison is amplified to turn on the power level and the motor is rotated t...
Intelligent regulating valve electric device is suitable for some rotary valves (such as butterfly valves, ball valves, dampers, etc.) and similar equipment. The bracket can be used as an angular stroke electric actuator. Aluminum alloy die-casting shell, with fine and smooth, small size and light weight, maintenance-free, strong corrosion resistance and other excellent properties, because of its ...
After the electric actuator receives the equipment, first of all, you should carefully check whether the manufacturer is equipped with manual and drawings of the electric actuator, and carefully control the drawings and specifications as required. After all the inspection work is completed, we will start debugging. Because there are many kinds of electric actuators, but the working principle is ba...
Electric actuators are widely used in real life. For example: electric power, metallurgy, petroleum, chemical industry, paper making, sewage treatment and other industries. Electrically drive valves and similar equipment to accomplish tasks beyond manpower. For example: Torque requirements are too large or the valve is in a bad environment. Electric actuator is also an important executive unit in...
Intelligent switch is an integration of control unit and electric actuator. It can realize local and remote automatic operation. It is more convenient to use. It is widely used in industrial automation system and can be directly connected to PLC/DCS system. Characteristic of the instrument: The control system and electric device are integrated into a whole called integral electric device. Its ele...
Electric actuator is the executive unit of industrial automation instrument. It can accept the control signals from regulator, industrial computer, DCS, computer and other instrument systems, and automatically complete the adjustment action. It is the indispensable main device of the automatic control system. The perfection of its protection function is directly related to the service life of the ...
The basic actuator is used to drive the valve to a fully open or fully closed position. The actuator used to control the valve can precisely move the valve to any position. Although most actuators are used for switching valves, the design of actuators nowadays goes far beyond simple switching functions. They include position induction devices, moment induction devices, electrode protection devices...
Generally speaking, if the valve is not tightly closed, first confirm to see if the valve is closed in place. If the valve has been closed in place, or there is leakage can not be sealed, then check the sealing surface. Some valve sealing pairs are removable, then take them out for grinding and re-testing, of course, if it is still not tightly closed, It must be repaired or replaced in order to av...
