High precision automatiac flow balancing device

Abstract

A high precision automatic flow balancing device comprises a flow balancing valve set at pipeline which is controlled by an actuator. A flow sensor at the same pipeline is connected to a control terminal. The control terminal compares the preset value with the output signals of sensors from each pipeline and gives a control signal to the actuator forming a closed control loop to control the flow of fluid.

1 . A high precision automatic flow balancing device, comprising:
 a flow balancing valve controlled by an electric actuator and provided in each pipeline;   a flow sensor provided in the each pipeline and connected to a control terminal;   wherein the control terminal receives a flow signal from the flow sensor in the each pipeline and compares a preset value with the flow signal and then gives a control signal to the electric actuator so as to control the flow balancing valve to regulate the flow of the pipeline, forming a closed control loop.   
   
   
       2 . The high precision automatic flow balancing device of  claim 1 , wherein the control terminal is connected to a network module. 
   
   
       3 . The high precision automatic flow balancing device of  claim 1 , wherein the control terminal is provided with an interface for connecting to a water pump controller of the pipeline network. 
   
   
       4 . The high precision automatic flow balancing device of  claim 3 , wherein the flow sensor is a mechanical flow sensor, an electromagnetic flow sensor, a vortex flow sensor or a supersonic flow sensor. 
   
   
       5 . The high precision automatic flow balancing device of  claim 3 , wherein the electric actuator has a linear actuator or a rotary actuator. 
   
   
       6 . The high precision automatic flow balancing device of  claim 3 , wherein the flow balancing valve is a regulating valve or a ball valve.