SD series electric actuator delivery pipeline rupture protection device

Release time:

28 Mar,2024

SD series actuator integrates the valve, servo motor and controller into one, adopts 8031 single-chip microcomputer and frequency conversion technology to realize the action speed and position control of the valve, and solves the technical problems such as precise positioning of the valve, flexible switch of the valve, position determination, motor protection and analog signal isolation. The intelligent electric actuator can be driven by a hydraulic power unit, stored gas pressure, or natural gas pressure from the pipeline. The time setting range is 0.1 to 10 seconds.

SD series electric actuator delivery pipeline rupture protection device
SD series electric actuator delivery pipeline rupture protection device

SD series actuator integrates the valve, servo motor and controller into one, adopts 8031 single-chip microcomputer and frequency conversion technology to realize the action speed and position control of the valve, and solves the technical problems such as precise positioning of the valve, flexible switch of the valve, position determination, motor protection and analog signal isolation. The intelligent electric actuator can be driven by a hydraulic power unit, stored gas pressure, or natural gas pressure from the pipeline. The time setting range is 0.1 to 10 seconds.

An electric actuator control system is used to allow high-pressure gas to enter the blocked gas hydraulic tank. Moreover, the full operating speed of this electric actuator depends on the output shaft speed of its motor and the reduction ratio of its internal reduction gear. Once it leaves the factory, this speed is fixed and cannot be adjusted, and its versatility is weak. Similarly, if the control signal exceeds the upper limit value, the actuator will stay at the upper limit set value and no longer track the CV change. The torque required for valve opening and closing determines the output torque of the electric actuator. It is generally proposed by the user or selected by the valve manufacturer. Under normal circumstances, the selection requires a clear working form. Many products cannot be modified after leaving the factory. Intelligent electric actuators can be modified through on-site settings. The sewage actuator shall be discharged periodically to deposit natural gas condensate, water, residue and worn iron filings.

In the presence of gas, the actuator is slow or does not run randomly. In this illustration, the actuator is equipped with a gas hydraulic tank, so this electric actuator is powered by gas pressure. If the CV value is less than the lower limit set value, the actuator stays at the lower limit value and no longer tracks the change in the CV value. The pressurized gas in the tank forces the hydraulic fluid into the blocking port of the actuator. This must be explained when selecting the type, otherwise mismatch phenomena such as conflicts with the control system during on-site installation will often occur. This time setting range is 0.1~10 seconds.

The traditional electric actuator has the disadvantages of low control precision, large dead zone and no network communication function, which can not adapt to the production requirements of modern industry. The entire implementation of the lack of sound protection and fault diagnosis measures and the necessary means of communication, the system is poor, inconvenient and computer networking. As an actuator manufacturer, it is only responsible for the output torque of the actuator. The torque required for normal opening and closing of the valve is determined by factors such as valve diameter, working pressure, etc. However, due to the differences in processing accuracy and assembly technology of valve manufacturers, the torque required for valves of the same specification produced by different manufacturers is also different, even if the torque of valves of the same specification produced by the same valve manufacturer is also different, when the selection of the actuator torque selection is too small will cause the normal opening and closing of the valve, so the electric actuator must choose a reasonable torque range.

Keyword:

Control Equipment

Fluid Control

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