How to configure the air compressor of the automatic control system

When the air consumption changes, the inverter adjusts the exhaust volume of the air compressor by changing the speed, so as to achieve the constant exhaust pressure and save energy.

When the Shanghai Atlas air compressor parts are running continuously, the temperature of the compressor body will rise, and when the temperature reaches a certain level, the system is set to 80 (the controller can set it according to the application environment) The fan starts to run, which is used to reduce the working temperature of the main engine. The fan has been running for a period of time, and the temperature of the main engine drops, and the fan stops below 75.

In the air compressor control system, the force sensor installed on the outlet pipe at the rear end of the Shanghai Atlas air compressor accessories is used to control the pressure of the air compressor. When the American air compressor starts, the loading solenoid valve is closed, the loading cylinder does not move, the inverter drags the motor to run without load, and after a period of time, the loading solenoid valve is opened, and the air compressor runs with load.

When the Shanghai Atlas air compressor accessories are put into operation, if the air consumption of the back-end equipment is large, and the compressed gas pressure in the air storage tank and the back-end pipeline does not reach the upper pressure limit, the controller will operate the loading valve, open the air intake, and the motor will run under load, continuously generating compressed gas to the back-end pipeline. If the back-end gas equipment stops using gas, the compressed gas pressure in the back-end pipeline and gas storage tank gradually increases, and when the upper limit of pressure is reached, the sensor of Shanghai Atlas air compressor parts sends an unloading signal, the loading solenoid valve stops working, the air inlet filter is closed, and the motor runs without load.

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Fixed-speed air compressor control.

This method is to keep the speed of the air compressor constant. The specific speed is determined by the speed of the drive motor and the transmission ratio of the transmission device. The transmission can be a gear or V-belt port, and the gas control is based on modulation control or poppet control.

Modulation control. This control adjusts the air intake valve of the air compressor according to the discharge pressure of the air compressor. When the controller detects an increase in exhaust pressure, it starts closing the intake valve.

While this control is effective, it is inefficient. The reason is that the efficiency of an air compressor is inversely proportional to the pressure ratio, i.e., the ratio of the discharge pressure to the inlet pressure. A closed inlet valve creates a vacuum at the inlet of the air compressor, while the discharge pressure is relatively constant, which is equivalent to an increase in the pressure ratio.

The remedy is to limit the adjustment range of the modulation control to around 40% and automatically convert the control scheme to load no-load control when it is found to be below 60%.

Variable displacement and control.

Controlling the effective rotor length can change the displacement of the air compressor. It is mainly achieved by adding a cone valve or screw valve to the main cracking machine to control the internal bypass. While the efficiency of this control is superior to modulation control, the screw valve is only effective when the capacity is greater than 50%-60%, and the commissioning of this control is complex and difficult.

Unload load control.

This control method is simple and effective. The pressure at the exhaust of the air pressure vertical voltifier is raised and closed, and when the upper (closed) pressure is reached, the intake valve is completely closed, and when the lower (open) pressure is reached, the intake valve is completely opened. Unlike modulation control, the air compressor under this control performs internal unloading.

The reduction of the pressure ratio leads to a reduction in the expenditure of useless work. This type of control can easily connect multiple air compressor units using a sequencer (master) controller. On the other hand, the air system requires the installation of an appropriately sized air storage box.

There are several factors to consider when choosing the right air compressor control system for you:

1.Compressed air demand: You need to determine the amount of compressed air required by the air compressor and the range of compressed air pressure. This will help you choose the appropriate capacity for your control system.

2.Machine type: Different air compressor types require different control systems. For example, some control systems may be suitable for hood rotary compressors, while some other systems may be suitable for piston compressors.

3.Durability: The control system needs to be robust enough to operate in the compressor's high pressure, high temperature, and high humidity environments for long periods of time.

4.Energy efficiency: Some air compressor control systems improve energy efficiency and reduce energy bills. Choosing a control system with energy management capabilities can make your system more energy efficient.

5.Easy to operate: The control system should be easy to use and maintain. Features such as graphical user interfaces and troubleshooting systems are available to help you better operate and maintain your control system.

In short, choosing an air compressor control system requires a comprehensive consideration of various factors to make the most suitable choice for you.