The Research And Application Of Speed Regulation Control System Of Blast Furnace Bucket Hoist

Winding on blast furnace system is the main process of blast furnace ironmakingfor metallurgical industry, is one of the important equipment of blast furnace normalcontinuous production, occupies an important position in industrial production, itssafety and reliability directly affects the production efficiency and economic benefit,therefore, strengthen the research of medium-sized blast furnace control system ofwinding, has very important practical significance.Domestic blast furnace discrete device is used in the main drive motor windingsystem original thyristor power supply circuit, with the development of the electrictransmission and electric power electronic technology, digital drive dc speedregulation system of the basic replaces the separation device of the drive system, dueto the direct current motor maintenance more difficult and limited capacity such asfaults, with the further development of new type of electrical transmission at the sametime, with the vector control and direct torque control of ac drive system is graduallyreplaced the dc control system.This article in view of the existing winding has been used in industry of theprinciple of speed regulation system comparison and analysis, to determine theirrespective advantages and disadvantages, and combined with their advantages ofexisting winding speed control system transformation and the optimization, on thisbasis, this paper proposes a dynamic torque winding with switching speed regulationcontrol system.At the same time considering the loading skip load is changing everytime, according to requirement of process ore or coke, skip to charging by weight isdifferent, every time system adopts adaptive control to satisfy the stability of thesystem, make the performance of the system more perfect and reliable.Finally, the Siemens PLC S7-300and ABB ACS800series frequency converterto realize communication adaptive dynamic torque-speed follow switching system, agood solution for regular system maintenance from volume, operation is not smooth,skip down the problems such as out of control, and guarantee the smooth of torqueincrease, smooth rising speed.In yuxi emerging steel1080m3blast furnace in theprimary winding system put into use, stable operation, reliable and excellentperformance, low failure rate, is good enough to meet the technological requirementsof blast furnace system, achieved good social and economic benefits.