Control system of servo-screw air compressor

Abstract

The invention discloses a control system of a servo-screw air compressor. The control system comprises a human-computer interaction unit, an internet-of-things unit, a remote server unit, a central processor unit, a servo system unit, a radiating system unit, a compression air storage unit and a pressure detection unit, wherein the input end and the output end of the internet-of-things unit are connected with the remote server unit in a communication manner; the input end and the output end of the servo system unit are connected with the central processor unit in the communication manner; the radiating system unit is arranged at the output end of the servo system unit; the output end of the central processor unit is provided with a servo motor; the output end of the servo motor is provided with an air compression system; and the output end of the radiating system unit is connected with the input end of the air compression system. The control system disclosed by the invention has the advantages that full-range constant pressure is achieved; compared with the common screw type air compressor, the servo-screw air compressor is relatively large in a constant-pressure range, and is very beneficial to stabilizing the working of gas consumption equipment, improving the performance of the gas consumption equipment and improving the production process of the gas consumption equipment.

Description

technical field [0001] The invention relates to a control system of a screw air compressor, in particular to a control system of a servo screw air compressor. Background technique [0002] The so-called variable frequency screw machines on the market just add a frequency converter to the front of the ordinary screw machine, and the motor is an ordinary three-phase asynchronous motor. Although it can also adjust the speed, change the displacement, and supply air at constant pressure. However, the constant pressure range is relatively small, and it needs to be delayed to stop and start, and it needs to be unloaded. When it is unloaded, the motor is idling, and no compressed gas is generated, which consumes energy in vain. [0003] a) These so-called variable frequency air compressors can have some speed regulation functions, but their speed adjustment range is small, and they cannot provide full displacement adjustment. [0004] b) No-load is required during operation, and n...

AI Technical Summary

Problems solved by technology

However, the constant pressure range is relatively small, and it needs to be delayed to stop and start, and it needs to be unloaded. When it is unloaded, the motor is idling, and no compressed gas is generated, which consumes energy in vain.

[0003] a) These so-called variable frequency air compressors can have some speed regulation functions, but their speed regulation range is small and cannot provide full displacement regulation

[0004] b) No-load is required during operation, and no-load will consume additional power

[0005] c) Because it is a three-phase asynchronous motor, the mechanical efficiency and power factor are relatively low, and the power saving effect of frequency conversion is not obvious

[0006] d) The low-frequency effect of the variable frequency drive is poor. When the three-phase asynchronous motor with frequency converter speed regulation is running at low speed, due to the inherent characteristics of the motor itself, the low active power will lead to increased line loss, reduced capacity, and reduced equipment usage, resulting in increased waste of electric energy. Big

Moreover, the three-phase asynchronous motor with frequency converter speed regulation, due to poor output current control and poor low-speed performance, often causes protection alarms due to abnormal current

[0007] e) The human-machine interface cannot intuitively check the operating parameters such as the voltage, current, power, time, etc. of the air compressor, and needs to enter the internal query of the human-machine interface, which is a difficulty for those who have not undergone strict training

[0008] f) There is no Internet of Things function, and the air compressor cannot be remotely controlled. When the air compressor needs maintenance or there are abnormal hidden dangers, it will stop abnormally because it does not have the Internet of Things function, which will affect production and cause maintenance due to damage to adjacent parts due to machine failure. The cost increases, the performance of the air compressor decreases, the output and gas volume decrease, and the efficiency decreases

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