This trainer has a modular structure and it consists of panels installed on a vertical frame. It is supplied with atheoretical and practical manual. Industrial type components are educationally adapted by using a modular panelsystem to permit the step by step assembling from the simplest circuit to themost complex system. This laboratory is designed for the study of Flow control application to allow thestudent a practical training, based on the performance of guided experiments. The modularity of this system cangive the students a direct and immediate approach to the topics, offering theopportunity to study various subjects, performing several experiments asfollowing:
Analysis of flow control features
Measurement systems features.
This Flow Control Apparatus is designed to demonstrate automatic control of the ow of water delivered by a centrifugal pump. The present invention relates to a flow control apparatus for a positive-displacement pump such as rotary-vane pump, plunger pump, gear pump, and more particularly to the flow control apparatus for keeping a flow rate of fluid discharged from the pump at the high rotational speed which is lower than a flow rate of fluid discharged from the pump at the low rotational speed. The unit enables students to investigate the effects of changing the parameters of the control algorithm (proportional band, integral action and derivative time) on the control capability of the system.
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Flow Control And Regulation Study Unit makes it possible to analyze the behaviour of a control loop where the controlled quantity is the flow rate of a liquid in a circuit. Students can examine the effects of the different control parameters on the performance of the control chain and on the stability of the system; furthermore, they can become familiar with the components commonly adopted in modern industrial applications, as the system is entirely made of industrial quality components. The unit can be had in two versions, where the control element consists of a pneumatic valve or a motorised electric valve. Compared to other quantities such as the level or the temperature the flow rate varies as a function of the regulating signal ina very quick way. This makes the problem of choosing the most suitable control technique very interesting.
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Flow measurement by paddle-wheel sensor
Generation of disturbance variables by ball valve with scale in pipe section outlet
Experimental unit for control engineering experiments
Flow control in a pipe section
Process variables X and Y accessible as analogue signals via lab jacks
Digital industrial controller, parameterisable as a P, PI or PID controller
Large process schematic on front panel
Rotameter to visualise the flow
Control valve: electric control valve.
Storage tank
Capacity: approx. 3000mL
Pump
Max. head: 6m
Max. flow rate: 8L/min
Power consumption: 18W
Proportional valve: Kvs: 0,7m³/h
Flow sensor: 0,5...3L/min
Rotameter: 20...250L/h
Software controller configurable as P, PI, PID and switching controller.
