Design of control system of hydraulic pump station of reclaimer rake in coal preparation plant

Abstract

Most oil pump motors of hydraulic pump station of reclaimer rake in coal preparation plant uses direct starting mode to start, and adopts analog instrument to detect hydraulic oil temperature at present, which exist some problems such as big starting shock, low detection accuracy of oil temperature and poor reliability. In view of above problems, the paper proposed a design scheme of control system of hydraulic pump station based on soft starter and PLC. The system uses PLC to collect the oil temperature and equipment operation condition of hydraulic pump station, controls the hydraulic pump station according to set operation mode, and displays running status, fault diagnosis and alarm information on-line. The control system has protection functions of oil temperature overheat, oil filter plug and motor overcurrent.

Keywords

• coal preparation plant
• stacker-reclaimer
• hydraulic pump station
• motor
• plc
• soft starter