Technical Renovation of Full High Voltage Variable Frequency Control System for Inclined Shaft Hoist in Coal Mines
The hoist is responsible for the main transportation task of the mine and is an important equipment in coal mine production.The mine hoist installed in the auxiliary inclined shaft of Zhengzhu Coal Industry Co.,Ltd.mainly adopts the traditional series resistance speed control electric control system.This system not only consumes a lot of energy,but also has poor stability,resulting in low production efficiency and frequent mechanical failures in the coal mine.In order to solve the above technical problems,Zhengzhu Coal Industry Co.,Ltd.carried out technical transformation on the basis of the original speed control electrical control system,and applied JKD/GBP-NT-250kW/6kV high-voltage frequency converter to the coal mine electrical control system.Through practical application,the modified high-voltage variable frequency control system has simplified the workflow,saved energy,ensured the smooth operation of the auxiliary inclined shaft hoist,and achieved significant economic benefits.
coal minehoistvariable frequency speed control devicetechnical renovation