Brake control device

Abstract

The present invention discloses a brake control device, consisting of an oxygen lance motor brake controller, a motor commutative controller and a power control contactor, wherein, the oxygen lance motor brake controller comprises an inlet wire switch, an intermediate protection contactor, a final motion contactor and an oxygen lance brake; the intermediate protection contactor and the final motion contactor are respectively controlled by respective power receiving motion contactors; the oxygen lance brake control device of the present invention carries out intermediate protection to a power supply main circuit of an oxygen lance motor brake; an oxygen lance motor brake is controlled through multi-point interlocking, realizing the meticulous protection to a control circuit of the oxygen lance motor brake; the oxygen lance motor commutative controller adopts a commutative control mode to realize the hot standby of an oxygen lance motor transmission system and an oxygen lance motor; power inlet wires inside an oxygen lance brake control cabinet are in a automatic double-power switching mode, which ensures the safety and reliability of oxygen lance systems.

Description

technical field [0001] The invention relates to a braking control device, in particular to a transmission braking control device for an oxygen lance in converter steelmaking. Background technique [0002] Oxygen lance braking control system is one of the indispensable subsystems in converter steelmaking transmission control system, it plays a vital role in the safe lifting of oxygen lance. In previous engineering projects, the control of the brake of the oxygen lance was often not given due attention. The brake control device of the traditional oxygen lance was only placed in the MCC cabinet as a simple circuit. The brake control mode of the traditional oxygen lance Such as figure 1 As shown, only one final action contactor (5) is connected between the incoming line switch (1) and the oxygen lance brake (7), so that the transmission system sends a switching output point or the oxygen lance is controlled independently by the output point of the PLC The simple single-point p...

AI Technical Summary

Problems solved by technology

In previous engineering projects, the control of the brake of the oxygen lance was often not given due attention. The brake control device of the traditional oxygen lance was only put into the MCC cabinet as a simple circuit. The brake control mode of the traditional oxygen lance like figure 1 As shown, only one final action contactor (5) is connected between the incoming line switch (1) and the oxygen lance brake (7), so that the transmission system sends a switching output point or the oxygen lance is controlled independently by the output point of the PLC The simple single-point processing method of controlling the lifting and lowering of the oxygen lance by the opening and closing action of the brake can easily cause the oxygen lance brake to be out of control (accidentally opened), causing the oxygen lance to fall at a high speed, resulting in a major safety accident

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