A permanent magnet coupling governor control device

Abstract

The invention discloses a control device for a permanent magnetic coupling governor, which comprises a box body and a main control unit installed on the panel of the box body, a power supply system is installed at the bottom of the box body, a power switch and a main control unit are arranged on the box body Connected emergency stop switch. The main control unit includes a CPU and an analog signal conditioning circuit connected to the CPU, a power conversion circuit, an alarm and indicator light output circuit, an optocoupler isolation input and a keyboard circuit, a thyristor output circuit, an RS232 communication interface circuit, and a digital tube display circuit and 0-20mA current signal output circuit; the present invention adopts commonly used chips, the system is easy to realize, and is stable and reliable, and the input and output are electrically isolated through the optocoupler, and the insulation is safe and reliable, and the speed control system of the permanent magnetic coupling speed controller needs to maintain The constant pressure or flow of the system can adjust the speed of the permanent magnet speed regulating coupler in real time, and at the same time detect the temperature of the permanent magnet coupling speed governor, and protect its safety.

Description

Technical field [0001] The invention relates to a permanent magnet coupling speed governor control device, which is suitable for a permanent magnet coupling speed governor speed control system for fans and pumps. Background technique [0002] In industrial use, the rated parameters of water pumps and fans are greater than the actual parameters. In most industrial applications, water pumps and air are usually adjusted by adjusting the opening of the valve or damper to adjust the required flow and pressure. Pumps or fans always work in rated conditions, so that a large amount of energy is consumed on the increased resistance of valves or dampers, which does not meet the national call for energy conservation and emission reduction. If the speed regulation technology is adopted, and the corresponding speed is adjusted according to the system demand air volume or air pressure, significant energy saving effect can be achieved. [0003] The speed control technology of permanent magnet co...

AI Technical Summary

Problems solved by technology

[0005] After searching the existing technology, it is found that there are many patents on the structure design of the permanent magnet coupling governor, but there are almost no patents on its control system. The reason is that the permanent magnet coupling governor is a new type of energy-saving equipment, and the research focus is on The main body design, the controller is replaced by a general industrial controller. This control scheme either makes the control system redundant and complicated, or the function is not perfect, and cannot well meet the control requirements of the permanent magnet coupling governor.

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