| 摘要 |
FIELD: engineering of devices for controlling technological processes. ^ SUBSTANCE: device for controlling flow contains device for generating additional information about flow of liquid substance, connected to one of inputs of electric positioning device, another input of which is connected to source of analog electric signal. Output of positioning device is connected to servo-motor, connected by its rod to adjusting tool, mounting on pipeline. Device for generating additional information about flow contains piezo-metric averaging pipe with outputs for tapping full and static pressures, mounted in pipeline in front of adjusting tool alongside the flow of liquid substance, and pressure difference indicator with electric analog output signal, connected by its inputs to outputs of piezo-metric pipe. Output of pressure difference indicator is connected to input of square-rooting device. ^ EFFECT: invention is invariant to alterations of flow mode, provides increased precision of generation of additional information about flow, requires no prior calibration of adjusting tool. ^ 1 dwg |
