Metal mixer tilting system and control method thereof

A control method and technology of a mixed iron furnace, applied in the direction of furnace control devices, furnaces, furnace components, etc., can solve the problems of inverter DC circuit overvoltage faults and excessive energy, and achieve the effect of avoiding inverter overcurrent faults and

A control method and technology of a mixed iron furnace, applied in the direction of furnace control devices, furnaces, furnace components, etc., can solve the problems of inverter DC circuit overvoltage faults and excessive energy, and achieve the effect of avoiding inverter overcurrent faults and

CN101643812BActive Publication Date: 2012-05-30XINXING DUCTILE IRON PIPES CO LTD
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  • Metal mixer tilting system and control method thereof
  • Metal mixer tilting system and control method thereof
  • Metal mixer tilting system and control method thereof

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Embodiment Construction

[0020] Hereinafter, the tilting system and control method of the mixing furnace of the present invention will be further described in conjunction with the accompanying drawings of the specification.

[0021] See figure 1 , The tilting system for the mixing furnace of the present invention includes a tilting reducer connected to the mixing furnace, the tilting reducer is connected to a driving motor and a driven motor, and the driving motor and the driven motor are respectively connected to the driving frequency converter and the driven frequency converter The models of the active frequency converter and the driven frequency converter are both ACS 800, and the above-mentioned connection relationship is the same as that of the prior art. The difference between the mixing furnace tilting system of the present invention and the prior art is:

[0022] It also includes a PLC controller for transmitting start and speed commands to the active frequency converter;

[0023] The active frequen...

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Abstract

The invention relates to a metal mixer tilting system comprising a tilting reduction box connected with a metal mixer. The tilting reduction box is connected with a driving motor and a driven motor; the driving motor and the driven motor are respectively connected to a driving frequency converter and a driven frequency converter, wherein the tilting reduction box also comprises a PLC controller used for transmitting starting and rotating speed instruction to the driving frequency converter; the driven frequency converter comprises a rotating speed receiving device connected with an optical fiber master / slave ring net, wherein the rotating speed receiving device is used for receiving the rotating speed information of the driving frequency converter sent by a rotating speed transmitting device of the driving frequency converter and enabling the driven frequency converter to run at the rotating speed being the same as that of the driving frequency converter, thereby ensuring the output torque height of the two motors respectively connected with the driving frequency converter to be consistent, and therefore, the overcurrent failure of the frequency converter and the overvoltage failure of a DC loop of the frequency converter can be avoided.

Description

Technical field [0001] The invention relates to a mixing furnace, in particular to a mixing furnace tilting system and a control method thereof. Background technique [0002] The mixing furnace tilting system is a device used to dump the molten iron contained in the mixing furnace. The existing mixing furnace tilting system includes a tilting reducer connected to the mixing furnace. The tilting reducer is powered by two motors. They are powered by inverters. Two motors (55KW) are used and one is in standby. When one motor is running, the other is in passive operation. [0003] When the mixing furnace tilting system starts, the passive motor absorbs a lot of energy from zero speed to normal operating speed, and the current will be large when the motor is started, so that the inverter of the motor in use will have an overcurrent fault. [0004] When the mixing furnace tilting system is closed, the backup motor releases energy from the normal working speed to zero speed. When the motor...

Claims

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Application Information

Patent Timeline
30 May 2012
Publication
CN101643812B
IPC
C21C1/06; F27D19/00
Inventors
ζŽθ€€ζ–‡; 张亚彬