Integrated Monitoring System Design of Hybrid Air-compressors

Abstract

A hybrid air-compressors integrated monitoring system has been developed basing on the retrofit of air-compressor control system in a certain mine of Shandong province. The air pressure principle and the same operation load rate principle are adopted in this system and the communication network is set up through the use of Industrial Ethernet and Profibus-DP Industrial bus. And the local, remote and network monitoring of one drive two control of screw air compressor group by high-voltage soft starter and one drive three piston air-compressors by inverter and cooling water circulation system are achieved through PC and PLC. In this system, the automatic control of air compressor operation is realized according to the amount of input air, and thus the flexible air supply is achieved. The mechanical abrasion of the air compressor has been reduced and coal mine production safety has been ensured. It is suitable for the system to use the distributed control of hybrid air processor group, which is of great value in the energy-saving upgrade of the air compressor group control system.