PLC control system for coking smoke guiding car

Abstract

The invention discloses a PLC control system for a coking smoke guiding car. The PLC control system comprises a PLC, an operating platform button, a liquid crystal display screen, a gripper cover limiting signal and a hydraulic solenoid valve. The PLC comprises a power module, a CPU module, an MPI, an INPUT module and an OUTPUT module. The liquid crystal display screen is connected with the MPI. The operating platform button and the gripper cover limiting signal are both connected with the INPUT module through a relay. The hydraulic solenoid valve is connected with the OUTPUT module through a relay. The INPUT module of the PLC receives an on-off signal from the operating platform button and the gripper cover limiting signal from a gripper cover, the two signals are compiled in the CPU module and then output through the OUTPUT module, the signals output by the OUTPUT module are transmitted to the hydraulic solenoid valve, and therefore control over the smoke guiding car is achieved. The PLC control system can conduct interlocked operation and inching operation, and the relay control mode with complex power distribution is eliminated, so that a circuit is greatly simplified, and maintenance is easy. The PLC control system is suitable for the smoke guiding car on the top of a 4.3-m stamped coking oven, lowers the failure rate of the smoke guiding car and protects the environment.

Description

technical field [0001] The invention relates to a control system, in particular to a PLC control system for a coking smoke guiding vehicle. Background technique [0002] With the development of social economy, environmental issues have become an unavoidable important issue. Protecting the environment, reducing environmental pollution, and curbing the trend of ecological deterioration have become important tasks for the government's social management. For iron and steel enterprises, protecting the environment is an important and arduous task we face. In 2009, after our department and the top-loading coke oven were transformed into tamping coke ovens, a smoke guide car was added to the top of the furnace, but the original smoke guide car had many disadvantages in electrical control, such as the use of traditional relay control circuits for capping operations , easily disturbed by external conditions (rain and snow weather, etc.), and there are no effective emergency measures...

AI Technical Summary

Problems solved by technology

In 2009, after our department and the top-loading coke oven were transformed into tamping coke ovens, a smoke guide car was added to the top of the furnace, but the original smoke guide car had many disadvantages in electrical control, such as the use of traditional relay control circuits for capping operations , easily disturbed by external conditions (rain, snow, etc.), and there are no effective emergency measures, which seriously affect the production rhythm

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