Factory wholesale price DN32~DN150 PN16 electric regulatig control ductile iron dynamic balance valve

Dynamic balance electric control valve is a new generation of electric control valve, which is different from the traditional electric control valve. It is the product of dynamic balance and electric regulation.

Dynamic balancing electric control valve is an important executive unit instrument in the process control of industrial automation. With the increasing degree of automation in the industrial field, more and more applications are being used in various industrial production fields. Compared with the traditional pneumatic control valve, it has obvious advantages: energy saving (electricity consumption only when working), environmental protection (carbon free), quick and convenient installation.

 
*1, the flow of the fluid to the valve core is in the flow state, so the stability of the work is good.

*2. Besides the bushing guide at the lid of the valve, the side of the valve core and the inner surface of the seat also have the guiding function, and the guiding area is large and the work is reliable.

*3. The servo amplifier adopts deep dynamic negative feedback, which can improve the adjustment precision.

*4. The electric operating device has many forms, which can be applied to 4 to 20ma.dc or 0 to 10ma.dc.

*5. The electronic control valve can directly control the opening of the valve by the current signal, without the need of the servo amplifier.

*6, save automatic investment, compared with single seat, double seat or sleeve valve, the same system can save a valve, simplify the system and save investment.

*7, the bellows seal type to the moving stem to form a complete seal, blocking the fluid leakage.

The

*8 and three regulating valves are divided into T and L type, and the medium is diverted and conflued. The selection of the valves is determined according to the working conditions.

As shown in the graph, when the system load fluctuates in a flow volume system, when the system pressure changes, the P1-P3 of the two ends of the dynamic balancing electric control valve will also change. (1) when the inlet pressure P1 rises, (P1-P2) increases, then the electric valve spool moves upward, so that the opening between P1 and P2 decreases, and the spool pressure P2 decreases. When the inlet pressure P1 decreases, the opening between (P1-P2) increases, and the spool pressure P2 increases. Therefore, no matter how the pressure of the system changes, the pressure difference between P2 and P3 remains constant through the regulating effect of the valve spool. Therefore, the electric valve has strong anti-interference ability and has the function of dynamic balance. (2) when the electric actuator accepts the control signal to make the valve axis extend R to rotation, the opening degree between P2 and P3 is also changed. Because regardless of system pressure (P1-P3) changes, the pressure difference between P2 and P3 (P2-P3) is always the same, so the corresponding to any opening position, the transportation of water flow is the flow characteristic curve and the actual electric control valve and early or late in the flow curve is consistent therefore, there is no deviation, the electric valve electric valve dynamic balance than traditional has better control characteristics.