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Analysis of matters needing attention in installation of Electrical Linear Actuator

Author : TAIXI Date : 2019-03-12 Views : 87

Electrical Linear Actuator is the terminal control device of automatic regulation system. It receives DC4-20mA analog signal or contact control signal from DCS/PLC control system, regulator or computer, and outputs torque to complete the automatic regulation task. Electrical Linear Actuator has the characteristics of fast signal transmission speed, easy centralized control, action sensitivity, high adjustment accuracy, simple installation and convenient maintenance. Electrical Linear Actuator is suitable for controlling or regulating butterfly valves, ball valves, dampers and control valves in open-loop or closed-loop control systems.
Electrical Linear Actuator is the terminal control device of industrial process measurement and control system. It can convert the control signal of the system into the angular displacement of the output shaft to control the position of the valve cutoff or other regulating mechanism, so that the controlled medium can work according to the specified state of the system. Electrical Linear Actuator can be divided into proportional and integral type according to the control mode. The proportional electric actuator is composed of an electric servo amplifier and an integral electric actuator. It can compare the control signal of the system with the feedback signal about the position of the output shaft (closed-loop control) to change the stroke of the output shaft and make it proportional to the output signal. Integral electric actuator is composed of servo motor, reducer and position transmitter. It can cooperate with electric operator to realize remote operation of valve or other regulating mechanism.
The automatic control system of the direct stroke electric actuator can realize the undisturbed switching of the "automatic" and "manual" working state of the control system by using DFD series electric operators. Electrical Linear Actuator is safe and reliable, easy to install, debug, operate and maintain. It is widely used in energy, metallurgy, chemical industry, building materials and other industries, and plays an important role in industrial process measurement and control system.
People who have been engaged in industrial production know more or less about the Electrical Linear Actuator. It is the terminal equipment of enterprise production measurement and control. After displaying the input signal of frequency screen, after analysis, the control signal is automatically transformed into a parameter displacement guiding mechanism to move according to a certain displacement. The basic principles of different kinds of products are the same, but some corresponding improvements have been made for some special industries. Electrical Linear Actuator can regulate all kinds of valves, control the air valve, regulate the pressure, temperature and other fluids in the work of the system. It plays an irreplaceable role in the power system, industrial production, sewage treatment and other industries.
After we buy the Electrical Linear Actuator from the market, we should install and debug it according to the product specifications. Generally speaking, the Electrical Linear Actuator has been adjusted when it leaves the factory, and in principle, it is not allowed to change. When installing, however, we should pay attention to a few points: before connecting the base with the valve, the valve and the actuator should be adjusted to the full open or closed state. Remember to remove the output arm axle of the electric actuator and install it after synchronizing the position of the product and the valve. Fix the actuator on the installation bracket, fix the screw, manually shake the actuator and observe the actuator and the valve. Whether the contact is firm and the operation is normal. Once installed together, it should be debugged. Connect the power cord, power the equipment, manually open about half of the valve, press the self-check button. The operation of self-test program of Electrical Linear Actuator needs a certain reaction time. If all valves are opened, it may cause strong fluid collision with the instrument, damage the internal valve plate, and cause the equipment not to work.