electric regulating valve is an important execution unit in industrial automation process control instrumentation. As in the field of industrial automation degree is higher and higher, is being more and more application in the field of all kinds of industrial production. Compared with traditional pneumatic - Industrial Valves has obvious advantages: energy saving (electric control valve Only electricity when at work) , environmental protection, No carbon emissions) Fast installation, convenient, No need for complicated pneumatic pipe and pump stations) 。 by their ticket enforcement agencies use the power, according to its functions and features are divided into linear features, such as percentage and parabolic characteristics of three.

the valve structure

by electric actuator and valve connection combination after mechanical connection assembly, commissioning the installation of electric regulator. Main parts

parts material: the Industrial Valves body, valve cover, packing gland, stem, disc, seal ring, indicator, stem nut, nut set

materials: gray cast iron, cast steel, stainless steel, brass

work

work power: DC24V, AC220V, AC380V voltage grade, etc.

input control signals: DC4 - Ma or DC1-20 5V。

feedback control signal: DC4 - 20MA（ Electric load block below 500 ohms)

by receiving signal of industrial automation control system ( Such as: 4 ~ 20 ma) To drive change valve core and valve seat between the cross-sectional area of the pipeline medium size control of process parameters such as flow rate, temperature, pressure and etc. Automated regulating function.

new electric valve actuators embedded servo function, 4 - accept reunification Ma or 1-20 5 v DC standard signal, convert current signal to the corresponding linear displacement, automatically control the valve opening, to achieve the fluid inside the pipeline pressure, flow, temperature, liquid level and other process parameters of continuous adjustment.

flow characteristic

electric flow characteristic of regulating valve, is on both ends of the valve differential pressure under the condition of constant, the medium flows through the electric control valve of the relation between relative flow and its opening.

electric flow characteristic of regulating valve are: linear features, such as percentage and parabolic characteristics of three. Application field

electric power, chemical industry, metallurgy, environmental protection, water treatment, light industry, building materials, such as industrial automation systems. Installed

electric regulator is the most suitable work for the installation of piston top at the bottom of the horizontal. Temperature sensor can be installed in any position, the length must be immersed into the accused of medium.

electric regulator generally includes drive, receive the drive signal ( 0 - 10 v or 4 - 20MA） Adjusted to control the valve, can also according to the need of control, intelligent network control system, optimization control to realize remote monitoring. Electric principle

action principle, motor power 220 vac or 380 vac, control signal 4 ~ 20 ma, valve controller, the controller convert current signal to the Angle of the stepper motor trip signal, motor rotation, by gears, levers, or gear lever, drive the stem, straight stroke or Angle of stroke.

feedback: the motor running, through the gear run, valve position signal output by SanJieTou slide rheostat, there are also three lines to the limit of signal, Full open and full closed. The public line)

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