A ventilation and energy-saving control method for realizing on-demand distribution of air volume in underground mines

Abstract

The invention discloses a ventilating and energy-saving control method realizing distribution of underground air quantity of an underground mine according to needs. The method comprises the following steps of: performing required airflow theoretical calculation by adopting mine ventilating network solving software according to seasons and operating periods of time; arranging draught fans in a relay manner according to an air current line; arranging an air velocity transducer in a draught fan mounting lane for monitoring air quantity; converting air quantity into draught fan frequency according to principle of similitude, and setting different air quantity allowed errors for the draught fans in different regions; and regulating the air quantity by virtue of a PLC control system. The method disclosed by the invention realizes ventilation of a mine ventilating system according to needs in an overall process from the aspects of calculation of required airflow of the mine, air quantity monitoring, setting of air quantity allowed errors and control and distribution of air supply, has the advantages of being stable to operate, reliable and practical and ventilating and energy-saving, is suitable for a metal / non-metal underground mine ventilating system and particularly suitable for ventilating and energy-saving control of the underground mine according to needs of a multi-draught fan ventilating system, wherein the draught fans are under frequency conversion control.

Description

technical field [0001] The invention relates to a ventilation and energy-saving control method for realizing on-demand distribution of underground air volume in underground mines, which is suitable for ventilation systems of metal and nonmetal underground mines, especially for ventilation systems of underground mines in which fans of a multi-fan ventilation system adopt frequency conversion control. Background technique [0002] Mine ventilation energy consumption accounts for a large proportion of mine production energy consumption. According to statistics, mine ventilation energy consumption is as high as 30% of mine production energy consumption. The main reason is that the traditional ventilation system design mode selects the fan type according to the most unfavorable ventilation situation. After it is put into operation, the air volume of the fan cannot be reasonably adjusted according to the actual production needs, especially the ordinary step-down control fan. Can w...

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Problems solved by technology

[0003] The present invention aims at the problem that the fan of the mine ventilation system adopts frequency conversion control but the awareness of the required air volume is insufficient, and the ventilation effect is deteriorated by arbitrary frequency reduction and stopping of the fan, and the closed-loop or linkage control of the fan is carried out even though feedback factors such as air volume, wind pressure, and air quality are used. However, the practicability and operability of the system are poor, so it is necessary to provide an on-demand ventilation method that is simple to operate, reliable in operation, and strong in practicability, which not only meets the ventilation needs but also is economical and energy-saving.

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