Energy-saving control method of multi-stage belt conveyor

Abstract

The invention discloses an energy-saving control method for a multi-stage belt conveyor. The energy-saving control method comprises the following steps that firstly, a coal quantity detection device is mounted on a first-stage belt of the multi-stage belt conveyor; secondly, a first-stage belt runs at the maximum constant belt speed, and a belt speed queue and a coal quantity queue of the first-stage belt are determined; thirdly, the preset running speed of a second-stage belt and a belt speed queue and a coal quantity queue of the second-stage belt are calculated; fourthly, according to a belt speed queue and a coal quantity queue of the ith-stage belt, the preset running speed of the (i+1)th-stage belt and a belt speed queue and a coal quantity queue of the (i+1)th-stage belt are calculated; and 5, the preset running speed of the nth-stage belt is calculated. The method is simple in step and convenient to implement, can be effectively applied to energy-saving control of the multi-stage belt conveyor, not only can realize energy-saving frequency conversion control of a system and prevent coal piling accidents, but also can greatly reduce the hardware construction cost of the system, effectively improve the reliability of the system and reduce the later maintenance cost, and is remarkable in effect and convenient to popularize.

Description

technical field [0001] The invention belongs to the technical field of belt conveyor control, and in particular relates to an energy-saving control method of a multi-stage belt conveyor. Background technique [0002] As the most important power load in coal mines, belt conveyors have an important impact on the production costs of enterprises. The control system and control method of the belt conveyor have a great influence on the technology and production cost of the enterprise. In coal mine production, the speed of the belt conveyor is usually controlled by the belt speed corresponding to the estimated maximum daily production capacity, which causes waste of electric energy and low economic benefits; although many literatures mention the use of intelligent algorithms to adjust the speed of the belt conveyor Control, such as the belt conveyor control system based on fuzzy control theory, the belt conveyor control system based on neural network algorithm or genetic algorithm...

AI Technical Summary

Problems solved by technology

In coal mine production, the speed of the belt conveyor is usually controlled by the belt speed corresponding to the estimated maximum daily production capacity, which causes waste of electric energy and low economic benefits; although many literatures mention the use of intelligent algorithms to adjust the speed of the belt conveyor Control, such as the belt conveyor control system based on fuzzy control theory, the belt conveyor control system based on neural network algorithm or genetic algorithm, but it is mainly in the stage of theoretical research, poorly combined with practice, and the control algorithm is complex, more restrictive

[0003] In the prior art, in order to carry out energy-saving control on the multi-stage belt conveyor, a coal quantity sensor and a control substation are equipped at each stage of the belt conveyor to detect the coal quantity. For example, the invention patent "A Multi-stage Belt Conveyor" with application number Conveyor speed regulation control method", each belt is equipped with a coal sensor, which leads to high equipment cost and high maintenance cost in the later period. The head of some belts is difficult to install the sensor due to the complexity of space and environment; again, When the coal quantity sensor is used in the mine, the environment is harsh and easy to be damaged. A single measurement will cause inaccurate measurement. If one of them fails, it will affect the overall production efficiency of the belt conveyor

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