Gas cabinet safety control system and control method thereof

Abstract

The present invention provides a technical scheme of a gas cabinet safety control system. The system comprises a gas cabinet analog quantity detection device, an analog quantity input and output module, a switching value input and output detection device, and a switching value input and output module. The gas cabinet analog quantity detection device is connected to the analog quantity input and output module through a guard grating. The analog quantity input and output module is connected to a PLC controller through a field bus. The switching value input and output detection device is connected to a switching value input and output module channel through a relay input and output isolation module. The switching value input and output module channel is connected to the PLC controller through a field bus. In addition the PLC controller is connected to a power supply and an Ethernet respectively. The normal throughput of a gas cabinet in a gas pipeline network is ensured, the normal operation of the gas cabinet is ensured so as to satisfy the safe and stable operation of the gas cabinet in petrochemical and metallurgical industry production.

Description

technical field [0001] The invention relates to the field of gas cabinet safety, in particular to a gas cabinet safety control system and control method. Background technique [0002] In the prior art, the well-known technology is that gas holder explosion accidents have occurred repeatedly in the metallurgical industry in recent years, which not only brings losses to the production of enterprises, but also seriously affects environmental pollution and personal safety. Therefore, it is safe and effective to control all aspects of the gas holder Operating indicators, ensuring its stable operation, and ensuring the supplementary supply of the production pipeline network are the top priorities of every enterprise in recent years. At present, the hardware part of the gas cabinet control system mostly adopts single controller, single network, single power supply, and single detection instrument for detection, and the software part can only carry out the operation requirements of ...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the well-known technology is that gas holder explosion accidents have occurred repeatedly in the metallurgical industry in recent years, which not only brings losses to the production of enterprises, but also seriously affects environmental pollution and personal safety. Therefore, it is safe and effective to control all aspects of the gas holder Operating indicators, ensuring its stable operation, and ensuring the supplementary supply of the production pipeline network are the top priorities of every enterprise in recent years.

At present, the hardware part of the gas cabinet control system mostly adopts single controller, single network, single power supply, and single detection instrument for detection, and the software part can only carry out the operation requirements of the daily control process, without redundancy, fault tolerance and complex logic judgment And emergency safety stop and other functions. When the controller, power supply, network, and field instruments have obvious failures, they do not have the ability to judge logically under abnormal conditions, which can easily cause process accidents and pose a major safety hazard.

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