The Improvement Of Belt Control System For Phase Second Coal Port Of QINHUANGDAO

In the whole producing process of transporting material, conveying material machine has the longest belt, and the drive motor has the largest power and energy consumption. So the control of energy consumption of the belt conveyor is the key point in energy conservation. Due to some reasons such as maintenance, warehouse, blending belt keeps running light for a long time, not only reducing the power factor of power grid, but also affecting the quality of the power supply, at the same time which causes a large amount of electric energy waste. So remoting belt conveyor system is imminent. This article proposes the transformation plan aiming at belt conveyor of control system for two-phase-branch company of QINHUANGDAO port.QINHUANGDAO port phase belt control system are analyzed and studied. First from the belt conveyor structure and driving part, understand the no-load running of belt conveyor, stop order and control of the belt conveyor skid consumes large amounts of electric energy, relay with proximity switch instead of velocity was proposed to detect the belt creep; With the speed no-load automatic stop switch to detect belt conveyor; With the brake instead of close-type brake is used to reduce unnecessary use of electricity. Light is given, the principle of the automatic stop wiring diagram and control program, and draw the belt inverse rev. Technological process and control program, proximity switch test belt skid in the control program is given.Finally,The communication system of belt coveyor are transformed, including a number of coal phase II substation and substation. considering Modicon 584 PLC has no parts supply in the market at present,so In this transformation of B belt conveyor used Siemens series PLC and Others control of belt conveyors is still with Quntum series PLC. the central control room has been transformed, the central control room as the control center establish a set of computer system and iFIX configuration software. Fishing the transformation, energy-saving benefit and stability are analyzed.